DE102014205925A1 - Tire monitoring system and method for monitoring a tire - Google Patents

Abstract

A tire monitoring system (100) for monitoring a tire according to an embodiment comprises a first module (110-1) configured to detect at least one physical quantity related to the tire and to provide a measurement signal based on the at least one detected physical quantity, and a second module (110-2) coupled to the first module (110-1) via a flexible cable (130) and configured to detect the measurement signal and to wirelessly communicate an information signal (140) based on the acquired measurement signal to transfer. This may make it possible to improve a compromise in terms of integration, manufacturability, robustness and accuracy of a tire monitoring system (100).

Description

Embodiments relate to a tire monitoring system for monitoring a tire and a method for monitoring a tire.

In many fields of technology, tires are used to translate rotational motion into linear motion or linear motion into rotational motion. The vehicle range here represents an example in which a linear movement, for example, generated by an engine, can be caused forwards or backwards in relation to the vehicle in question. Tires which can be used here are both tires made of a solid material and tires which are filled with a gas or a gas mixture.

A failure of such a tire can sometimes lead to very dramatic consequences. For example, in the case of a vehicle traveling at higher speeds, a failure of a tire may lead to a loss of control by the driver, causing the vehicle to fail. In this case, not only the vehicle itself, but also the passengers or occupants of the vehicle itself or its load and other road users and passers-by can be affected.

By using a tire monitoring system, it may be possible to detect a failure of a tire at an early stage and so take appropriate countermeasures or send the driver a corresponding signal, whereupon he can take the appropriate countermeasures. The countermeasures may include, for example, a reduction in the speed of the vehicle, a stop, or any other emergency, precaution or repair measure.

But not only in the vehicle sector, so for example in passenger cars, trucks, rail vehicles and other corresponding vehicles, but also in more complex systems are used in part tires for transmitting or guiding a rotational movement in or through a linear movement or vice versa. Conveyor systems are only an example in which, if appropriate, a safer and more efficient transport can be made possible by using appropriate tires. Even with these systems, the failure of a tire can possibly cause considerable damage.

Tire monitoring systems are often in a field of tension, which should allow, for example, an easy implementation, an easy and thus possibly cheaper production and at the same time a more reliable monitoring of the tire in question. There is therefore a need to improve a compromise in terms of integration, manufacturability, robustness and accuracy of a tire monitoring system.

This need is taken into account by a tire monitoring system according to claim 1 and a method for monitoring a tire according to claim 10.

A tire monitoring system for monitoring a tire according to an embodiment includes a first module configured to detect at least one physical quantity related to the tire and to provide a measurement signal based on the at least one detected physical quantity. It further comprises a second module, which is coupled to the first module via a flexible cable and designed to detect the measurement signal and to transmit an information signal wirelessly based on the acquired measurement signal.

A method of monitoring a tire according to an embodiment comprises detecting at least one tire-related physical quantity in a first module, providing a measurement signal based on the at least one sensed physical quantity in the first module, detecting the measurement signal in one first module coupled via a flexible cable second module and a wireless transmission of an information signal based on the detected measurement signal.

Embodiments is thus based on the recognition that the fact that the first module is designed to detect the physical quantity related to the tire and to provide a measurement signal based on the detected physical quantity and to provide the second module via the flexible cable, so that it then based on an information signal can transmit wireless, reliability can be improved even under difficult operating conditions with relatively simple technical possibilities. As a result, it may be possible to improve a compromise on ease of integration, ease of manufacture, robustness and accuracy of the tire monitoring system, since the first module is used to detect the physical quantity, while the second module connected to the first module via the flexible cable is coupled, transmitted a physical size based information signal wirelessly. An elaborate cable management may thereby possibly be saved. Likewise, owing to the communication between the first module and the second module, the robustness and / or the accuracy can be improved by taking into account the integration or manufacturability via the measurement signal based only on the physical quantity.

Hereinafter, embodiments will be described and explained in more detail with reference to the accompanying drawings.

1 shows a schematic block diagram of a tire monitoring system according to an embodiment;

2 shows a flowchart of a method according to an embodiment for monitoring a tire;

3 shows a schematically simplified cross-sectional view of a module for detecting a physical quantity of a gaseous medium according to an embodiment;

4 shows a schematic cross-sectional view through a module for detecting a vibration behavior of a mechanical component according to an embodiment;

5 shows a schematic cross-sectional view through a module according to an embodiment;

6 shows a schematically simplified cross section through a module according to an embodiment;

7 shows a cross-sectional view through the first module of a tire monitoring system according to an embodiment;

8th shows a perspective view of the lead component;

9 shows a perspective view of the tire monitoring system in an early manufacturing process;

10 shows a perspective view of the tire monitoring system according to an embodiment of a later production process;

11 shows a plan view of the sealing structure of the first part of the housing of the first module of the in the 7 to 10 shown tire monitoring system according to an embodiment;

12 shows a perspective view of the tire monitoring system after another production process;

13 shows a schematic perspective view of a printed circuit board with a discrete component;

14 shows a perspective view of the first module before inserting the circuit board;

15 shows a perspective view of the supply line component with the seal;

16 shows a perspective view of the tire monitoring system after another manufacturing process;

17 shows a schematic cross-sectional view through the mounted first module;

18 shows a perspective view of the tire monitoring system after a further process step;

19 shows a perspective view of the tire monitoring system after another manufacturing process step;

20 shows the tire monitoring system after the in 19 shown manufacturing process from a back side; and

21a . 21b and 21c show perspective views of different tire monitoring systems.

In the following description of the accompanying drawings, like reference characters designate like or similar components. Further, summary reference numbers are used for components and objects that occur multiple times in one embodiment or in one representation, but are described together in terms of one or more features. Components or objects which are described by the same or by the same reference numerals may be the same, but possibly also different, in terms of individual, several or all features, for example their dimensions, unless otherwise explicitly or implicitly stated in the description.

The following are examples of systems, modules, and other components that can be used in a variety of machine, plant, and vehicle applications. You can used for example in connection with tires of a vehicle. More specifically, in the further course of the description, a tire monitoring system and its components will be described in greater detail, which may be used, for example, for monitoring a tire pressure, a tire temperature but also a vibration behavior of a wheel of a truck. However, it may be possible to detect other and / or other physical quantities that may relate to the tire, its filling, or other components, such as a bearing or a wheel of a vehicle.

Examples are also not limited to use in trucks. Rather, they can also be used in other motor vehicles, for example in passenger cars, motorcycles, light motorcycles and buses. They can also be used on other land vehicles, such as trailers, bicycles, mountain bikes, rail vehicles, work machines, agricultural machinery and other vehicles. However, they are just as limited to use in the vehicle sector. Rather, corresponding examples can also be used in machines and systems. Thus, although a tire monitoring system will be described in great detail hereinafter, examples are by no means limited to tire monitoring systems for trucks or other motor vehicles.

An important parameter that is monitored in tires of trucks and other motor vehicles, the tire pressure, which thus prevails in an interior of the tire when it is filled with a gaseous medium, so a gas or gas mixture. A tire monitoring system used to monitor tire pressure is also referred to as a tire pressure monitor system (TPMS). In this case, the corresponding tire monitoring system can also measure other parameters, for example a temperature of the tire or its gaseous filling. A tire monitoring system can thus be used, for example, mainly for monitoring the temperature and the air pressure for each individual tire of a truck and its trailers, which can for example be attached to an outer side of the rim, ie outside the actual interior of the tire. However, if such a sensor or a corresponding module is located outside the actual tire, there is always a risk of air leakage.

For example, in the case of trucks, the tire pressure can be significantly higher, for example in the range of about 8 bar, as in passenger cars. In addition, the field of application of these vehicles may be rougher than for corresponding passenger cars. Particularly with off-road trucks, ie trucks suitable for off-road use, mud, dirt, snow and similar environmental conditions can additionally burden corresponding tire monitoring systems and, if necessary, influence the tire's tightness. For example, such vehicles may be at significantly higher risk of falling through pebbles and other solid foreign bodies.

In this case, the data from the tire monitoring system can be transmitted wirelessly, for example by radio. If in this case the same module is used both for data acquisition and for wireless transmission, it may be advisable for weight and stability reasons to use several components and modules, especially when used outside the actual tire. As a result, however, it can happen that permanently pressurized hoses outside of the actual tire exist, which in turn have corresponding interfaces to the relevant components. As a result, a risk of pressure leakage due to the variety of prevailing interfaces, so for example, the interfaces between the valve and a valve extension, the valve extension and the hose and the hose and the corresponding sensor module and other internal interfaces in the region of the example designed as an SMD pressure sensor (SMD Surface Mounted Device) will increase the risk of pressure leakage.

1 shows a schematic block diagram of a tire monitoring system 100 to monitor a tire. The tire monitoring system 100 This includes a first module 110-1 , which is adapted to at least one on the in 1 not shown tire related physical size and to provide a based on the at least one detected physical quantity measurement signal. To illustrate this in more detail, shows 1 an optional connection 120 about which the first module 110-1 may be coupled to a valve of the tire such that the first module is fluidly in contact with the interior of the tire so as to directly grasp the at least one physical quantity. By a fluidic connection so there is the possibility for the fluid in the interior of the tire in the first module 110-1 to get.

In the tire monitoring system 100 so can the first module 110-1 be configured to mechanically connect with a valve of the tire to be. In such a case, the first module 110 be further formed to fill the interior of the tire with the fluid.

The tire monitoring system 100 further comprises a second module 110-2 that has a flexible cable 130 with the first module 110-1 coupled and adapted to the measurement signal of the first module 110-1 to detect and based on the detected measurement signal an information signal 140 to transmit wirelessly. Here, the information signal 140 be transmitted wirelessly, for example by radio.

The measuring signal can be transmitted via the flexible cable 130 from the first module 110-1 to the second module 110-2 be transmitted. The transmission can be done for example by means of electrical signals. Of course, in other examples, other transmission techniques via the flexible cable for the measurement signal can be used. For example, the measurement signal can also be optically from the first module 110-1 to the second module 110-2 be transmitted. Depending on the concrete implementation, in this case also a communication in the opposite direction, ie of the second module 110-2 to the first module 110-1 take place, for example, an execution of the measurement or a detection of the physical quantity by the first module 110-1 to initiate. Also, if necessary, other control commands from the second module 110-2 to the first module 110-1 for example, a reset or other system-related function.

The modules 110 For example, they may be designed to be directly connectable to a wheel or a component of the wheel. As will be explained in more detail below, a module can be designed, for example, to be mechanically connectable to a rim of the wheel, a wheel carrier for the wheel or even a valve of the tire of the wheel. A module 110 For example, it may comprise a housing which, in a state intended for operation, does not have an opening to an electrically conductive component or supply line, ie, for example, the module 110 or its electrical leads are sealed from environmental influences by the housing.

2 shows a flowchart of a method for monitoring a tire. The method includes, in a process P100, detecting at least one tire-related physical quantity in a first module 110-1 (not shown in 2 ). In a process P110, a measurement signal based on the at least one detected physical variable is provided in the first module 110-1 , In a process P120, the measurement signal is detected in one with the first module 110-1 over the flexible cable 130 coupled second module 110-2 (not shown in 2 ). In a process P130 follows a wireless transmission of an information signal based on the detected measurement signal 140 (not shown in 2 ).

In one embodiment of a method, the abovementioned processes can be carried out in the specified but also optionally in a different order. Thus, if appropriate, individual processes can take place simultaneously, or at least overlap in terms of time, unless otherwise stated in their description or the technical context.

A mechanical coupling of two components comprises both direct and indirect coupling. Electrical or other components are indirectly coupled to one another via another component or directly to one another in such a way that they permit an information-bearing signal exchange between the relevant components. Thus, the corresponding coupling sections or completely, for example, implemented electrically and optically, magnetically or by radio technology and implemented. With regard to their range of values and their time course, the signals may comprise both types continuously, discretely or, for example, in sections. It may be, for example, analog or digital signals. In addition, signal exchange can also take place via writing or reading data into registers or other memory locations.

The first module 110 as it is in 1 4 shows a module for detecting a physical quantity of the gaseous medium which, in the application scenario described therein, originates from the interior of the tire. Such a module 110-1 is in a highly simplified schematic cross section in 3 shown.

The module 110-1 as it is in 3 is shown comprises a discrete component 150 on a surface 160 a detection area 170 having. The discrete component is in this case designed to detect the physical size of the gaseous medium which is on the detection area 170 acts. The detection area 170 For example, here is an area of the surface 160 a housing of the discrete component 150 form. For example, has this in its housing an opening, recess or hole, through which the gaseous medium with the discrete component 150 can come into contact in such a way that it can measure and determine the relevant physical quantities or quantities the detection area 170 For example, be formed by the surface of the opening or include this. For example, are the sensor element (s) in question in the housing of the discrete component 150 arranged so can the gaseous medium over the detection area 170 penetrate to the one or more sensor elements.

The detection area 170 however, it may also be on a surface inside the housing of the discrete component 170 over which the direct or indirect contact of the gaseous medium with the or on the surface or buried arranged sensor elements can take place.

The physical quantity may in principle be any physical quantity that can be determined by means of a corresponding discrete component. The physical variable may thus be, for example, a pressure, a temperature, an intensity of an electromagnetic radiation or the like. A discrete component may for example be one that can be integrated as such in an electrical circuit. For example, this can be applied directly or indirectly to a printed circuit board so as to be connected to it in terms of information technology and mechanics. The information technology connection can be made, for example, electrically, optically, magnetically or based on other signals that can be used for transmitting information. If such a discrete component comprises, for example, a sensor for a physical variable, such a component may require calibration or calibration, the data of which may then be stored in the component in a memory provided or usable for this purpose. For example, a discrete component may have undergone a calibration or calibration and thus include corresponding calibration or calibration data.

The module 110-1 further comprises a supply line component 180 , which is adapted to the gaseous medium to the detection area 170 introduce. The supply line component 180 as it is in 3 is shown has a channel for this purpose 190 which is fluidly coupled to the interior of the tire or other source or reservoir for the gaseous medium. In addition, the supply line component 180 an opening 200 on, which allows access of the gaseous medium from the channel 190 to the detection area 170 allows. The opening 200 is so fluidly with the channel 190 of the supply line component 180 coupled or connected.

The module 110-1 also has a seal 210 on that with the supply line component 180 and the surface 160 the discrete component is in contact and the detection area 170 on the surface 160 of the discrete component 150 fluidly seals. Here, the seal, as in the example in 3 shown is a sealing lip 220 which is formed around the detection area 170 To enclose, so that the seal a sealing space 230 forms the detection area 170 includes and by the seal of an exterior space 240 the seal 210 is disconnected. By using such a seal 210 For example, a greater tolerance compensation can be made possible. For example, this may result in a reduction in the discrete component of the seal 210 exerted forces, thus resulting in, for example, a reduction in the bias or the mechanical stress of the discrete component 150 can be enabled. The flexible sealing lip 220 For example, it can be used to compensate for manufacturing tolerances. Due to the V-shaped structure of the seal 210 and her sealing lip 220 Optionally, at different distances between chamber bottom and sensor surface, the seal can be realized without much increase or decrease in the preload in the system. Thus, for example, the pins of the pressure sensor (discrete component 150 ) As little as possible mechanically loaded and yet a large dimensional tolerance range in the biasing direction are possible.

Moreover, if a flow of the gaseous medium is not necessary, also a relatively small opening 200 and thus one in their dimensions, for example in terms of their diameter, small seal 210 be used. This can also be a limitation of the discrete component 150 and thus, for example, forces acting on a printed circuit board are achieved on which the component 150 mechanically and electrically attached.

The second module 110-2 of the tire monitoring system 100 as it is in 1 For example, it may also be shown as a module 110 be designed to detect a vibration behavior of a mechanical component. The mechanical component may be, for example, the wheel of the truck or a corresponding wheel bearing.

4 shows a schematic cross-sectional view through the module 110-2 , which is also capable of a vibration behavior of a in 4 To capture not shown mechanical component. For this purpose, the module includes 110-2 a fastening component 250 that is configured to be mechanically rigidly connected to the component to absorb mechanical vibration of the component. The module 110-2 also has a printed circuit board 260 on the in turn a circuit 270 Which is designed to detect the mechanical vibration of the mechanical component and to transmit based on the detected vibration wireless signal comprising a vibration behavior. The module 110-2 moreover has at least one spacer 280 on top of the circuit board 260 with the fastening component 250 mechanically connects such that the mechanical vibration of the fastening component 250 on the circuit board 260 is transmitted.

Again, optionally, the transmission of the vibration behavior comprehensive signal by radio can be done. This may make it possible to implement a comparatively simple implementation of such a module 110-2 to allow in an existing system. Also, in a replanning of such a system, if necessary, a consideration of a wire harness for transmitting the relevant signals can be saved.

The at least one spacer 280 can be optionally formed to the circuit board 260 rigid with the fastening component 250 to connect and fix. As a result, so can the spacer 280 or the at least one spacer 280 not only for transmitting the mechanical vibration of the fastening component 250 on the circuit board 260 serve, he can also for mechanical fixation and thus for mechanical suspension of the circuit board 260 and the included circuit 270 serve. Depending on the specific configuration, in this case the at least one spacer 280 be made for example of a metallic material. A metallic material may in this case be, for example, a metal or a metallic alloy. Such a metallic alloy may, for example, in addition to a metallic material include other metallic materials or elements, but also non-metallic elements or materials. An example of such an alloy is, for example, steel or brass. For example, metallic materials may be electrically conductive, although they may also be surrounded by a non-conductive or electrically insulating layer, for example.

Depending on the specific requirement profile can in an example of a fastening component 250 this also be made of a metallic material. Additionally or alternatively, this may also be an electrically conductive material. To ensure the best possible coupling of the fastening component to the in 4 To enable not shown mechanical component, the fastening component 250 optionally be designed so that this at least two spatially separate locations 290-1 . 290-2 can be connected to the mechanical component. At the in 4 example shown so the fastening component 250 for example, in the places 290 one opening or bore each 300-1 . 300-2 have, with the aid of which the fastening component can be screwed, for example, to a rim of a truck. So the module can 110-2 For example, for mounting on a wheel or a rim of a truck or other vehicle to two screwed along the circumferential direction of the rim or the wheel arranged threaded bolt, with the help of which also the rim is attached, for example, to a wheel.

Adjacent are two objects, between which no further object of the same type is arranged. Immediately adjacent are corresponding objects when they are adjacent, that is, for example, in contact with each other.

The fastening component 250 can be manufactured, for example, as a sheet metal part. If it is made at the same time from a metallic material or another electrically conductive material, this may optionally be a suitable for detecting the vibration behavior coupling of the module 110-2 be achieved with simple design means.

The fastening component 250 however, independently of this, may also be along a predetermined direction 310 have an extension that is greater than an extension of the circuit board 260 along the predetermined direction. The circuit board 260 can in this case along a projection direction 320 perpendicular to the predetermined direction 310 below or above the fastening component 250 be arranged.

In addition or as an alternative to such an embodiment of the fastening component 250 can the module 110-2 also a component 330 include that between the circuit board 260 and the fastening component 250 is arranged. In a projection of the component 330 along the projection direction 320 perpendicular to the circuit board 260 can be at least 30% of a total area of the projection of the component 330 be caused by electrically conductive material at least partially. The total area of the projection of the component 330 this can be at least 30% of a total area of a projection of the circuit board 260 along the projection direction 320 correspond. Independently of one another, the two abovementioned percentage values can also correspond to at least 50%, at least 70%, at least 80%, at least 90%, at least 95% or 100% in other examples, which corresponds to a complete projection in the latter case.

In other words, the component may comprise a significant portion of an electrically conductive material, similar to a corresponding configuration of the fastening component 250 can lead to the following effects. The electrically conductive material here comprises, for example, a metallic material, as has already been mentioned above.

At the component 330 For example, it can be an energy source 340 act between the circuit board 260 and the fastening component 250 is arranged. This can be done with the circuit 270 the circuit board 260 be coupled to provide them with electrical energy. The energy source 340 In this case, for example, an electrochemical energy source, for example a battery or an accumulator, may be included. In the 4 shown energy source 340 For example, it may be or include a button cell.

Especially in a wireless transmission of the vibration behavior comprehensive signal can by the integration of a correspondingly large metallic mass, such as such an energy source 340 or the fastening component 250 In itself, it may be disturbing to the wireless transmission of the signal, so for example in the wireless transmission of the signal by radio. For example, the circuit 270 also comprise an antenna, which is designed to transmit the signal containing the vibration behavior.

The circuit 270 This can be printed on or integrated into the circuit board 260 However, discrete components and components but also include integrated circuits as corresponding discrete components. So can the circuit 270 For example, comprise a discrete component, which is designed to detect the mechanical vibration.

By using the spacer 280 will just procure space, which, for example, for the component 330 So for example the energy source 340 can be used, so the module 110-2 smaller and more compact can be built without the radiation characteristics of the antenna, for example, in the circuit 270 can be implemented by the component 330 is disturbed or that the module 110-2 must be significantly increased in terms of its area. Also, it may be possible by implementing the at least one spacer 280 regardless of the implementation of a corresponding component 330 with the energy source 340 to improve a radiation behavior for the signal containing the vibration behavior.

Of course, the module 110-2 also include a housing which the circuit board 260 includes and so for example the circuit board 260 and their circuit 270 protects against damage and other harmful influences.

A housing for such a module 110 as, for example, as a housing for the module 110-1 and / or for the module 110-2 of the tire monitoring system 100 out 1 can be used is in 5 shown schematically. The module 110 out 5 has a first part housing 350-1 and a second sub-housing 350-2 on that together a recess 360 form. In the recess 360 is a circuit board 260 arranged. A potting compound 370 closes the recess 360 , The material from which the first part housing 350-1 is made, and the material from which the second part housing 350-2 is made, in this case have a difference in terms of their thermal expansion coefficient, which is at most 10% of the magnitude of the two expansion coefficients. In other examples, the aforesaid value may also be at most 5%, at most 2% or at most 1%. The coefficients of thermal expansion can also be identical, for example, if, for example, for the materials of the two sub-housings 350-1 . 350-2 the same or at least a very similar material is used. The first part housing 350-1 here has a sealing structure 380 and the second sub-housing has a counter-sealing structure 390 on, which are just designed so that they interlock. This may make it possible for the two sub-housings 350-1 . 350-2 together with the potting compound 370 a housing 400 form, which is the circuit board 260 and at least partially protects an optionally on this or in this implemented circuit from the influence of moisture, dust and other external influences. This makes it possible to use such a module with comparatively simple technical means 110 even under harsh environmental conditions, without the production of the module 110 This significantly worsens. For example, the first part housing 350-1 as a preform or premold for equipping the resulting housing 400 be used with components in 5 only in the form of the flexible cable 130 are indicated as an optional component. This may make it possible to implement the finished module 110 even under more difficult environmental conditions, making it easier overall.

The second part housing 350-2 can then in the context of an injection molding or Umspritzvorgangs to the first part housing 350-1 be formed. The first sub-housing and the second sub-housing can, for example, injection-molded parts represent. Although in the foregoing description, the first sub-housing 350-1 As a preform (premold) has been considered, of course, this also for the second part of the housing 350-2 be valid. In other words, out of a lot of sub housings 350 , which is the first part housing 350-1 and the second sub-housing 350-2 includes, one of the two sub-housings be a preform for another sub-housing the amount of sub-housing.

As in 5 is also suggested here can the sealing structure 380 or the counter-sealing structure 390 have at least one elevation and / or at least one depression. This can for example be designed asymmetrically, so as to advance along the interface of the two sub-housing 350 to aggravate moisture, dirt and other contaminants. This can be done both along one direction 410 from an outdoor space 420 of the housing 400 into the recess 360 leads, the asymmetry of the elevations or depressions are both designed so that a steeper edge on one of the recess facing or remote side is present. By providing the sealing structure and the corresponding counter-sealing structure 380 . 390 Thus, a way can be prolonged, the pollution from the outside space 420 take to get into the recess and thus in the area of the circuit board 260 to be able to penetrate. Of course, in this case, the sealing structure 380 have a plurality of successively arranged elevations and / or depressions. Accordingly, the counter-seal structure 390 a plurality of successively arranged depressions and / or elevations, which may optionally have a shape that those of the elevations or depressions of the sealing structure 380 correspond. Again, the term "consecutively" in the direction 410 from the outside space 420 into the recess 360 into or in the opposite direction.

The first part housing 350-1 and the second sub-housing 350-2 In this case, a cable feed section 430 which are formed to the flexible cable 130 at least to the recess 360 introduce. The sealing structure and the counter-sealing structure may here at the cable feed sections 430 of the first part housing 350-1 and the second sub-housing 350-2 be arranged. So can the sealing structure 380 and the counter-sealing structure 390 just be implemented in such an area, in which due to a movement of the flexible cable 130 for example, with an increased degree of deformation of the two sub-housings 350 by the movement of the flexible cable 130 could be expected. So just in this area, if appropriate, an easier entry of impurities in the recess 360 respectively.

In addition, if necessary, a more mechanically stable implementation of a module 110 against mechanical loads along the flexible cable 130 to implement, in such a module 110 Optionally, a strain relief can also be implemented, as related to below 6 will be described in more detail.

So shows 6 a schematic cross-sectional view of a module 110 that is a case 400 one completely in the housing 400 arranged circuit board 260 and a flexible cable 130 having. The flexible cable in this case has at least one provided for guiding a signal sub-cable 440 on which with a contact point 450 the circuit board 260 is indirectly or directly electrically connected. The subcable 440 points in the case 400 between a first reference point 460-1 and a second reference point 460-2 a curved course 470 on how a comparison with one between the two reference points 460 drawn straight lines 480 in 6 illustrated. The curved course 470 may extend at least over an angle of at least 90 °.

This can be at a mechanical load, such as a tensile or compressive load of the flexible cable 130 or the at least one sub-cable 440 this optionally inside the housing 400 yield without the direct or indirect electrical connection to the contact point 450 mechanically too strong to load. As a result, if necessary, a reliability or robustness to mechanical loads can be increased, as they can occur during operation, for example.

Optionally, the module 110 a support component 490 which is, for example, the supply line component 180 can act, and in which the curved course 470 at least partially around the support member 490 round lead. Depending on the concrete implementation, in this case, the support member, for example, also have a recess to the sub-cable in question 440 around the support component 490 around carry.

This can be both in contact with the adapter cable 440 with the support component 490 to be wanted. This may allow a mechanical force acting on the flexible cable 130 or the partial cable 440 acts to transmit by frictional forces or other forces on the support member. Thus, if necessary, a force directly on the housing 400 via a mechanical coupling of the support member 490 be transferred to this. On the other hand, even when not in contact with the sub-cable 440 with the support component 490 the strain relief functionality are implemented, as this may cause the sub-cable 440 can be easily moved.

Optionally, the at least one sub-cable 440 also from a potting compound 370 and / or the housing 400 , For example in the form of the first and / or the second part of the housing 350-1 . 350-2 , between the first reference point 460-1 and the second reference point 460-2 at least partially, ie partially or completely, in the area of the curved course 470 be surrounded. This makes it possible to have a contact surface between the potting compound 370 and the subcable 440 towards a straight course between the two reference points 460 to increase, so that a force, substance and / or positive connection between the potting compound 370 and the subcable in question 440 can be increased. The same applies, for example, to implementations in which the flexible cable is in the area of the curved path 470 between the two reference points 460 is completely or partially surrounded. In this case, the force, substance and / or positive connection between the potting compound 370 and the flexible cable form the appropriate strain relief or at least favor. The same applies equally to the encapsulation of the flexible cable or the sub-cable 440 in the molding of the same during molding of one or more of the sub-housing 350 ,

Such a force, substance and / or positive connection between the potting compound 370 and the subcable 440 or the flexible cable, for example, by exploiting the shrinkage behavior during the cooling phase of the potting compound 370 be achieved. Due to this shrinkage effect, "friction forces" can be achieved by overmolding the cable or its partial cables 440 due to the shrinkage on cooling to be implemented and exploited. A length of the overmolded cable may, for example, be at least 10 mm, at least 20 mm or at least 30 mm.

Likewise, it can optionally during the encapsulation to a melting of the cable 130 or the part cable or cables 440 come, which, for example, an at least partially cohesive connection is achieved. This can be done, for example, by using a material for a jacket of the cable 130 or the partial cable 440 be reached, which partially or completely softens, or melts at a temperature used during encapsulation. In this way, a cohesive connection between the first part housing 350-1 , the second part housing 350-2 and / or the potting compound 370 and the sheath of the flexible cable 130 or the jacket of the part or the cable 440 arise by the jacket melts on at least one of said components and thus enters into the cohesive connection.

With regard to the injection molding of the housing part 350 used spraying temperatures, these can be selected by selecting the appropriate material so that this to a slight melting of the part or the cable 440 but without melting it completely to create a better connection between them. This can be independent of each other for the first part housing 350-1 , the second part housing 350-2 , both sub-housings 350 and / or for further sub-housings 350 be valid.

A subcable may, for example, comprise a wire, an insulated wire, a stranded wire, a plurality of strands or even one or more glass fibers or another cable which allows a signal routing or another line which allows signal routing. This can be electrical, optical or otherwise compared to other sub-cables 440 be protected against a corresponding transmission of the signals between the individual sub-cables. Thus, such a sub-cable can be electrically insulated for example by an electrical insulation, for example, a paint insulation or other coating. Of course, in the flexible cable 130 also several, so for example two, three or more sub-cable 440 be guided parallel to each other. Depending on the specific implementation, these can be within the flexible cable 130 always parallel, but also twisted or twisted out.

The signal transmission in the flexible cable 130 and thus his or her sub cables 440 Therefore, for example, electrically or visually or by other means, if, for example, a fluidic separation between the first module 110-1 and the second module 110-2 with regard to the gaseous medium of the tire in the case of a tire monitoring system 100 is implemented.

In addition, it may also be possible by the use of the potting compound 370 (not shown in 6 ) in contact with one or more sub-cables 440 and / or the contact point (s) 450 stands to reduce or even completely prevent ingress of water and other contaminants, along the sub-cables 440 to the circuit board 260 could arrive. Due to the additional material contact between the potting compound 370 and the sub cables 440 or the contact points 450 , which may include, for example, an electrical contact or plug connection, so may optionally be an intrusion of impurities to the electric conductive areas are difficult or even prevented.

Even if related to the 1 to 6 Different aspects have been highlighted, they can be implemented in different combinations in embodiments. So below is a tire monitoring system 100 , which is more specifically a Tire Pressure Monitoring System (TPMS), which further implements the foregoing aspects. However, as previously explained, these are far from a tire monitoring system 100 , as previously described, is limited. Rather, even with conventional tire pressure monitoring systems or tire monitoring systems 100 Aspects are implemented, whereas in a tire monitoring system 100 According to one embodiment, not all of the aforementioned aspects have to be implemented.

Hereinafter, in the form of a pressure sensor of a tire pressure monitoring system for trucks, which can be mounted on an outer side of a tire, a more concrete implementation will be described in more detail. The relevant tire monitoring system 100 here has two modules 110 on. In a module, the first module 110-1 Also referred to as a valve module, substantially the pressure is detected while in a second module 110-2 , which is also referred to as the main module, the necessary infrastructure for the wireless communication, possibly some other arithmetic operations and the power supply are arranged. The valve module (first module 110-1 ) is mounted directly on the rim valve of a wheel, while the main module (second module 110-2 ) is arranged on an edge diameter of the rim and fixed by two adjacent wheel nuts. The two modules 110-1 . 110-2 are electrically via a two-part cable 440-1 . 440-2 Cable flexible cable 140 connected with each other. The flexible cable 130 has exactly two sub-cables 440 on.

Based on the harsh environmental conditions that such a system may encounter, this design, described below, may provide strain relief and environmental sealing, as well as ease of hardware assembly or manufacture during production. For example, the strain relief and the sealing concept will be discussed in more detail below.

Thus, a tire pressure monitoring system with a connection cable concept with a strain relief and an environmental concept is described in more detail below. With regard to the sealing concept in which the pressure sensor in question - as mentioned - is mounted on an outer side of the tire, in one embodiment, for example, only a valve extension can be connected directly to the rim valve. In terms of the internal design of the valve extension, which is also the first module 110-1 If necessary, a conventional valve extension system can be used. An outer shape may be, for example, square or rectangular or have another polygonal shape and form a sealing chamber or a sealing space having an opening 200 to the pressurized internal design. In this case, if necessary, the mechanical stabilization of the relevant module can be improved if the area of the valve extension (supply component 180 ), which is surrounded by the housing, is as large as possible. On the other hand, however, a smaller implementation considering other effects and parameters, such as the available space, may be useful.

A circuit board 260 , which may be implemented as a printed circuit board (PCB), for example, may be implemented by a plastic housing 400 packed and electrically via a flexible cable 130 with a second housing of the second module 110-2 are connected, which can be mechanically connected via a fastening component, which is also referred to as a base plate, via the wheel nuts with the rim. As a result, it may possibly be possible to reduce, possibly even minimize, a likelihood of compressed air leakage by placing the pressure sensor itself very close to the valve extension and by a specially configured seal 210 is sealed. It can, for example, only another relatively small seal - seal 210 to the pressure sensor - used to fluidly connect the system. Often standard valve extensions can also remain permanently in use, for example, to facilitate refillability of the tire, for example the so-called outboard tire in a twin tire, which faces the vehicle interior. In this case as well, only one additional interface to the environment may possibly be implemented, even if the module 110 remains on the tire.

In addition to the previously mentioned printed circuit board, the circuit board 260 be designed as another plate-shaped structure, on the or in a circuit 270 at least partially feasible. The printed circuit board can be used for mechanical recording and / or electrical or other information technology connection of a discrete component. The connection can be through, for example Soldering, welding or other electrically conductive connection technology done.

The tire monitoring system described below 100 has two modules 110-1 . 110-2 to reduce the risk of leakage and a more flexible implementation to different rim types in terms of length and curvature radius of the modules 110 connecting cable. In the first module 110-1 (Valve module), which can be mounted directly on the rim valve, essentially the pressure and possibly further physical size is measured, while in the second module 110-2 (Main module) the wireless transmission, possibly some arithmetic operations are performed and the necessary power supply is arranged. The two modules 110-1 . 110-2 are about exactly two subcables 440 comprehensive flexible cable 130 connected with each other. Especially for harsh environmental conditions, the design described below on a strain relief and the already indicated environmental sealing concept, while this may possibly also allow easy hardware assembly during manufacture. Especially in the field of off-road trucks, where dirt, mud, snow and similar environmental conditions can put additional strain on the system and affect cable robustness, an appropriate implementation may be advisable.

The two modules described below 110-1 . 110-2 So are electrically via a precisely two sub-cable 440 comprehensive flexible cable 130 electrically connected to each other. Therefore, for example, special suitable for automotive use cables, such as those of ABS / ASR sensors (ABS = Anti Blocking System = ASR = traction control system) can be used.

As the following description will show, a number of pressurized interfaces can optionally be reduced, optionally even minimized, which in turn can lead to compressed air leaks. Thus, in addition, a pressure loss due to a damaged pressure hose may also be avoided. Also, if necessary, the risk of a porous or leaking hose and the risk of a missing spare part of the hose concerned may possibly be avoided.

It may also be possible, if necessary, a mechanical stress on the circuit board 260 , their interfaces and the soldering areas, for example between the sub-cables 440 and the press-fit contacts described below by pulling or pushing on the cable 130 if necessary reduced or even avoided. In addition, minor modifications may make adjustments to a large number of types of rims available on the market. So can by the use of a flexible cable 130 a tire monitoring system because of its typically greater flexibility with respect to bends 100 optionally used in a larger number of rims. For example, the greater flexibility of a cable may result in a smaller bend radius. As the following description will also show, if necessary, a quick assembly of the required hardware components in both modules 110 be feasible. Also, a reduction or even a minimization of the number of pressurized interfaces can take place, which can lead to a compressed air leak.

The 7 shows an overview of a pressurized area 500 and the essential sealing components of the first module 110-1 a tire monitoring system 100 according to an embodiment, however, as a whole in 7 not shown. Also called the valve module first module 110-1 based on its sealing structure on a fitted valve extension, with a plastic housing 400 sprayed over and then possibly shed. This is how the module points 110-1 a supply line component 180 on, which represents the actual valve extension. So has the supply line component 180 a connection structure 510 on which is trained to the module 110-1 to be connectable to a valve of a tire, the valve allowing early technical access to a fluid-filled or filled interior of the tire. The fluid may in this case be, for example, a gaseous medium, for example a gas or a gas mixture. The connection structure 510 thus has a tire valve interface 520 with a usual standard for this seal. For mechanical attachment of the connection structure 510 or the module 110-1 at the valve of the tire has the connection structure 510 a valve extension nut 530 with a corresponding guide surface in its interior. At the in 7 shown supply line member has the channel 190 a curved course and leads to a valve core 540 attached to one of the connection structure 510 opposite end of the supply line component 180 is arranged. In one area 550 , which will be described in more detail below, is a gasket 210 between the supply line component 180 and a discrete component embodied, for example, as an SMD sensor 150 arranged, with the seal 210 as previously described, with a surface 160 (not shown in 7 ) of the discrete component 150 as well as with the supply line component 180 in contact. The discrete component 150 If appropriate, this represents, inter alia, the pressure sensor which is connected to a printed circuit board 260 electrically and mechanically connected. At the circuit board 260 it may be, for example, a printed circuit board (PCB) on which the discrete component 150 is soldered.

Compared to a more conventional valve extension, the supply line component differs 180 and the first module 110-1 for example, by having an opening 200 an access to the discrete component 150 allows, with the help of the tire pressure can be determined, for example. Of course, however, instead of the tire pressure, other physical quantities, such as a temperature, a chemical composition of a gas mixture, so for example, a humidity, or other physical size by the discrete component 150 be recorded. In addition, the supply line component 180 a seal seat formed around the seal 210 take and secure against slipping. Additionally or alternatively, such slippage can also be caused by aging effects, in which there is a flow of the sealing material of the seal 210 can come. The use of the seal seat can thus additionally or alternatively a loss of the sealing effect of the seal 210 due to aging of the seal 210 counteract. The supply line component 180 thus shows the seal seat 600 which can be trained to seal 210 absorb and prevent the seal from slipping 210 and / or against aging effects, for example in the form of a flow or a loss of dimensional stability of the seal 210 to secure. The seal seat, which in 7 however, is not shown in detail, thus enabling the seal 210 between the discrete component 150 and the lead component 180 to position and fix.

Radial and axial closures can be introduced in addition to, for example, an interface between the housing made of plastic 400 and the lead component 180 to strengthen even in the case of mechanical stress. An extension of the supply line component 180 In comparison with a standard valve extension with a corresponding guide structure, this can be a placement or assembly of the TPMS valve module 110-1 facilitate if necessary.

8th shows a perspective view of the lead component 180 , So shows too 8th again the connection structure 510 together with the valve extension nut 530 , which may for example have a knurl for ease of handling. At the connection structure 510 opposite side, so at the valve insert 540 is arranged, however, in 8th is not visible, this is about a graduation cap 560 covered. About the valve insert 540 can also be used with mounted module 110-1 Pressure to be given in the tires. In other words, the module has 110 also a valve 570 formed to the gaseous medium via the connection structure 510 in the well in 8th not shown interior of the tire to make refillable.

To forces acting on the case 400 act, better on the supply line component 180 derivable, this radial rotary latch 580 as well as axial turning bolts 590 on. By the encapsulation and possibly by the subsequent encapsulation of the housing 400 can thus additionally a positive connection between the housing 400 and the lead component 180 arise. The radial rotary bolt, for example, by planar surfaces of the supply line component 180 at least partially formed. flanks 595 such surfaces, for example, perpendicular to the axis of the supply line component 180 stand, can serve as axial rotary latch.

A frictional or frictional connection comes about through static friction, a cohesive connection by molecular or atomic interactions and forces and a positive connection by a geometric connection of the respective connection partners. The static friction thus generally requires a normal force component between the two connection partners. This can be achieved, for example, by utilizing the shrinking material during the cooling phase after encapsulation of the supply component 180 happen, which can also serve as a valve extension.

In addition, shows 8th the opening 200 and the previously mentioned seal seat 600 which is adapted to the seal 210 take. While it is at the opening 200 in the present embodiment is a bore which directly into the channel 190 of the supply line component 180 leads, it is the seal seat 600 around a recess or a blind bore with a larger diameter than a diameter of the opening 200 in which the essentially rotationally symmetrical seal 210 (not shown in 8th ) can be used. This is about a surface 610 of the supply line component 180 in this area.

The supply line component 180 has such a feeder section 620 which is part of the supply line component and is designed to direct the gaseous medium directly to the detection region of the also in 8th not shown discrete component 150 introduce. The feeder section 620 in this case has the previously mentioned bore or the opening 200 and the seal seat 600 on. The feed section will later from the housing 400 completely enclosed.

The supply line component 180 Moreover, in terms of the already mentioned strain relief also provides the support member 490 dar. Thus, the supply line component 180 in the feeder section 520 two substantially circumferential groove-shaped recesses 630-1 . 630-2 on which around two sub-cables 440 in the 7 and 8th not shown flexible cable 130 be guided. The groove-shaped recesses 630 can simultaneously as axial rotary latch 590 , so serve for axial securing.

The following is the wiring concept and other details regarding the tire monitoring system 100 described in more detail. So shows 9 a perspective view of the tire monitoring system 100 in an early manufacturing process. The first module 110-1 includes at this time essentially the supply line component 180 as well as a spacer component 640 which part of a prestressing structure 650 is. The bias can be effected here by the distance. The prestressing structure 650 For example, by a socket or other appropriate structure and a screw 770 be formed or these include the circuit board 260 with the discrete component 150 against the seal 210 with her sealing lip 220 can press, however, in 9 are not shown. By just the distance of the component 150 to the supply line component 180 so dimensioned is that the seal 210 in the desired manner against the component 150 presses, so can the bias of the seal 210 be achieved. By the above-described embodiment of the seal 210 and her sealing lip 220 It may possibly be possible here, a load on the component 150 and to limit its supply lines, and yet insensitive to greater tolerances in terms of distance. About the preload structure 650 Thus, for example, a minimum distance between the relevant components, for example the brass bushing, and the sealing chamber can be set. This can be determined for example by means of bending beam calculation. The second module 110-2 also includes two spacer components 640-1 . 640-2 ,

The later housing 400 the two modules 110-1 . 110-2 become the prestressing structures 650 include. The prestressing structures 650 are then capable or trained to exert a force on the circuit boards, so that the seal 210 about the mechanical attachment of the discrete component 150 on the circuit board 260 against the supply line component 180 can be prestressed. The prestressing structures 650 For this purpose, for example, in addition to the already mentioned distance components 640 also each comprise one or more screw elements. The respective spacer components 640 are designed here for the circuit board 260 to make a stop. The screw elements and the spacer components 640 are trained together to the circuit board 260 so against the distance components 640 to push that seal 210 is biased. The screw elements may comprise, for example screws or more complex shaped elements. Such a screw can therefore for example comprise an external thread, which is in engagement with a corresponding internal thread. Of course, such a screw but also have an internal thread, so be formed for example as a mother.

The two modules 110-1 . 110-2 are beyond the flexible cable 130 connected, which exactly two sub-cables 440-1 . 440-2 includes. The subcables 440 are here with contact structures 660 welded, it being the contact structures 660 are press-fit contacts, which are designed substantially L-shaped and are designed to be resilient on a side facing away from the welding points, so as to be introduced, for example, in electrically conductive holes through which the circuit board 260 with the relevant sub-cables 440 is electrically coupled.

In addition illustrated 9 the presence of the curved course 470 also in the later housings 400 are arranged and so realize the strain relief. Here are the sub-cables 440 in the area of the first module 110-1 in the recesses 630 of the supply line component 180 ,

In the first module 110-1 has the lead component 180 the previously mentioned recesses 630 on. Here are two groove-shaped recesses 630 in the outer shape of the also referred to as valve extension supply line component 180 been introduced, in which the sub-cables 440 be guided. This may make it possible to have sharp edges in the area of the sub-cables 440 to avoid and so short circuits between these and the supply line component 180 to avoid as well.

9 shows the arrangement of the relevant components in the context of a first production process, before the preform, which is the first part of the housing 350-1 forms, is shaped. Here are the flexible tools in the appropriate tools 130 , the supply line component 180 or the valve extension and also called threaded inserts spacer components 640 in the appropriate tool is inserted. After the first manufacturing process, in which the preform or the first part housing 350-1 the two modules 110 is formed in each case, lies in 10 presented situation. So shows 10 a perspective view of the tire monitoring system 100 with the two modules 110 , In the potted areas in this case, the cable 130 or its partial cables 440 the previously described curved courses, each extending by at least 90 °. Using these bent areas can be a strain relief of the welding points and the contact structures 660 be achieved so that even with a pull on the cable 130 be charged directly and immediately in the context of the application.

As already related to 5 has been explained, here have the first part housing 350 each in a cable feed section 430 the sealing structure 380 on. This is also referred to as a labyrinth design in the preform. So illustrated 10 not just the leadership and position of the cable 130 or its partial cable 440 , but also the strain relief concept of the preform or the first part of the housing 350-1 ,

11 shows an enlarged view of the sealing structure 380 in the area of the cable feed section 430 through which the cable 130 in the first part housing 350-1 is introduced. The sealing structure 380 in this case has a plurality of elevations or depressions, which are arranged one behind the other and asymmetrically shaped in the present embodiment. Here they point to an outdoor space 420 facing side steeper flanks than at an outdoor space 420 or the later recess 360 facing side up. Along the in 11 marked direction 410 , which in the module 100-1 the cable 130 leads, the sealing structure 380 so several consecutively arranged gently sloping depressions and accordingly rising to this much steeper elevation. In addition illustrated 11 also the presence of an opening 670 which, for example, for easier guidance or stabilization of the cable 130 in the tool during the molding of the first part housing 350-1 is present.

In a further production process, as in the perspective representation of 12 you can also see the tire monitoring system 100 with its two modules 110-1 . 110-2 and the flexible cable 130 at least partially re-molded around so the second part of the housing 350-2 to form the corresponding counter-sealing structure 390 Includes, with the waterproofing structure 380 engaged. As a result, at least partially becomes an outer shape of the respective modules 110 and so achieved the sensor. In addition, so can the individual components of the preforms (first sub-housing 350-1 ) are packed.

This shows 12 the situation where the contact structures 660 So the press-fit contacts with the ends of the sub-cables 440 are welded and a few millimeters into the recess 360 protrude into the two sub-housings 350-1 . 350-2 form together, and over which the electrical contact to the circuit boards 260 the two modules 110-1 . 110-2 is created. In a next process is on the back of the now partially finished housing 400 So in the recesses 360 the circuit board 260 Pressed until these are in mechanical contact with the spacer components 640 occurs, which are referred to as threaded inserts, spacers, sockets or sleeves due to their embodiment shown here. These form a corresponding stop. During this Einpressprozesses the contact structures 660 also electrically with the printed circuit boards 260 connected in the context of a cold welding process. Subsequently, as will be shown below, the circuit boards 260 additionally fastened and prestressed by appropriate screw elements in the spacers 640 be screwed and the housing 400 with their potting compounds 370 , more precisely the recesses 360 through the potting compounds 370 to be shed. Here, in principle, any potting compound 370 be used.

With regard to the materials of the first and second sub-housings 350-1 . 350-2 it may be advisable to use those which have a comparable coefficient of thermal expansion. Thus, these materials may have differences in their coefficients of thermal expansion, which are not more than 10% of the largest value of the respective coefficients of expansion. Ideally, the differences may be smaller, for example at most 5%, at most 2% or at most 1%. So can the sub-housing 350-1 . 350-2 For example, essentially of the same material and thus have substantially identical coefficients of thermal expansion. As the material for encapsulation, for example, polybutylene terephthalate (PBT), another corresponding thermoplastic or another polymer can be used.

The supply line component 180 So in a two-stage process has been injected one behind the other and so in the future housing 400 of the first module 110-1 been integrated. This housing represents the correct position of the discrete component 150 , which may be, for example, a pressure sensor based on the SMD Technique (SMD = Surface Mounted Device) relative to the opening 200 in the supply line component 180 , For this reason, for example, a circuit board 260 which may at least partially implement the design features explained below.

13 shows a simplified perspective view of a circuit board 260 for the first module 110-1 , This is a discrete component in SMD technology 150 applied, which is adapted to detect the physical size relative to the tire. For this purpose, the discrete component 150 on a surface 160 the detection area 170 on, for example, through an opening in a housing of the discrete component 150 can be formed. So can the discrete component 150 For example, be designed as an integrated circuit in the aforementioned housing.

In other words, on the circuit board 260 of the valve module 110-1 For example, a pressure sensor manufactured in SMD technology as a discrete component 150 with a central hole or central opening as a detection area 170 assembled. A design of such a circuit board 260 , in coordination with the housing features of the housing 400 of the module concerned 110-1 is trained in is 13 shown.

In addition to the already mentioned SMD technology, the discrete component 150 on the circuit board 260 be mechanically attached directly or indirectly and electrically contacted. In addition to the SMD technique, other fastening and contacting techniques, for example, based on the so-called in-line technology manufactured discrete components can be contacted, in which the electrical and mechanical contact via holes in the circuit board 260 is realized. Likewise, correspondingly capped solutions can be used. The later housing 400 this can be both the circuit board 260 as well as the seal 210 , also in the context of inserting the circuit board 260 in the module 110-1 can be introduced.

In addition, the in 13 illustrated circuit board 260 two holes 680-1 . 680-2 which are just arranged and configured to make electrical contact across the contact structures 660 So allow the press-fit contacts. For this purpose, a lateral surface 690 drilling 680 metallized so as to make the electrical contact of the contact structures 660 to the other components of in 13 not shown circuit 270 the circuit board 260 to enable. The discrete component 170 is part of the circuit in question 270 , In addition, the circuit board points 260 several guide recesses 700 on, for example, are produced by drilling and to guide the circuit board 260 inside the recess 360 of the housing 400 before sealing with the potting compound 370 serve. In addition, the circuit board includes 260 a hole 710 for the screw elements of the later prestressing structure 650 ,

With regard to increasing the reliability and robustness of the modules 110 in addition to a moisture or dust ingress can also the circuit board 260 also be designed so that this around the contact points 720 that the holes 680 or the electrically conductive coated surfaces 690 form the same, in a corresponding environment at least on the surface of the circuit board 260 has no electrically conductive structures with the contact points 720 are connected directly electrically conductive. So, even along the cable 130 and along the subcables 440 Moisture or other contaminants inside the case 400 of the module concerned 110 reach, so an electrical short circuit can be prevented if necessary, or at least made more unlikely.

Such a module 110 , which is both the first module 110-1 as well as the second module 110-2 can thus further comprise a cable which comprises at least one provided for guiding a signal sub-cable, which is connected to the circuit board 260 at a contact point 720 the circuit board 260 electrically connected to a surface of the same with this directly or indirectly. The circuit board 260 points in such a case in an environment 730 the contact point 720 on the surface of the circuit board 260 none not directly with the contact point 720 electrically connected, electrically conductive structure. A structure which is directly connected to the contact point may, for example, be one which, even in the case of a current flow within the specified parameters of the relevant module, does not essentially lead to a voltage drop along the structure. In other words, such a structure has a small electrical resistance of, for example, at most 20%, at most 10%, at most 5%, or at most 2% of the total resistance of the device relative to a current flow to a reference potential, eg, ground, compared to other components. This may be, for example, a supply structure for a current or a voltage, for example a via or another supply line, such as a conductor track.

Depending on the specific implementation, the environment may 730 around the contact point 720 on a main surface 740 the circuit board 260 for example, at least 1 mm in all directions over the contact point 720 extend beyond. In other embodiments, this may also be at least 2 mm, at least 3 mm, at least 4 mm, at least 5 mm or at least 6 mm.

In order to further reduce a risk of short circuits, the circuit board may not only on the surface of the same in the environment 730 the contact point of the circuit board 260 none not directly with the contact point 720 having electrically connected, electrically conductive structure, but the entire circuit board can not correspond to the contact point 720 having electrically connected, electrically conductive structure.

At the circuit board 260 this is essentially a plate-like structure having along a first direction and along a second direction, which is perpendicular to the first direction, extensions that are significantly larger than an extension along a third direction, both on the first as well as on the second direction is vertical. This third direction is also called the thickness of the circuit board 260 and may, for example, correspond to at least a fivefold, at least a tenfold or at least a twentyfold of a largest extension along the first or second direction. The main surface 740 Here is the area that extends parallel to the first and second directions.

The circuit board 260 Thus, in the embodiment shown, three guide recesses 700 for vertical positioning of the printed circuit board 260 in the recesses 360 of the housing 400 on. By the already described spacer components 640 or threaded inserts can the circuit board 260 and the discrete component 150 be positioned horizontally. Through the contact structures 660 , So for example, the press-fit contacts, electrical connections of the sub-cable 440 and optionally also a mechanical stabilization can be achieved.

14 shows a perspective view of the first module 110-1 before inserting the circuit board 260 , Here, to simplify the illustration, the cable 130 not shown. So shows 14 a look into the recess 360 passing through the first and second sub-housings 350-1 . 350-2 of the housing 400 is formed. The second part housing 350-2 forms leadership structures 750 , which with the in 13 shown guide recesses 700 cooperate such that the previously described vertical guidance of the circuit board 260 this is made possible or guaranteed.

Likewise shows 14 the spacer component 640 the bias structure 650 and the seal seat 600 around the hole 200 which belong to the in 14 not shown channel of the supply line component 180 leads. In addition, in 14 again the designed as a press-fit contacts contact structures 660 to see. 14 shows the valve module (first module 110-1 ) or his housing 400 without the previously related 13 described hardware as well as the seal 210 ,

Before now the circuit board 260 is used, first the seal 210 in the seal seat 600 inserted. This is in the perspective view of 15 illustrated.

15 shows a perspective view of the supply line component 180 with the seal seat 600 in which the seal 210 is used. The seal 210 here has a sealing lip 220 formed to the detection area 170 (not shown in 15 ), so that the seal has a sealing space 230 forms the detection area 170 includes and through the seal 210 from an outdoor space 240 is disconnected.

The sealing lip 220 here has a sealing edge 760 on, which is designed to work with the surface 160 of the discrete component 150 to be in contact. The sealing lip points in this case starting from the sealing edge 760 an outer edge of a cross-section, starting from an unloaded state of the seal 210 becomes larger when the gasket is formed for a pressure of the gaseous medium, which is greater than a pressure in the outer space. Is, however, the seal 210 formed for a pressure of the gaseous medium, which is smaller than the pressure in the outer space, the sealing lip, starting from the sealing edge 760 have an outer edge of the cross-section, starting from an unloaded state of the seal 210 gets smaller. As a result, depending on which pressure conditions are present, an additional sealing effect can be achieved by the prevailing pressure conditions by additionally compressing the seal due to the pressure acting on it.

The seal 210 differs in a very significant way from conventional seals, such as an O-ring seal. A seal 210 As used here, for example, allow greater tolerance compensation and thus possibly to a reduction of the bias or the mechanical stress (English stress) on the leads of the pressure sensor (discrete component 150 ) enable. In other words, so by the of the sealing lip 220 on the electrical leads of the discrete component 150 applied forces can be reduced. In contrast, for example, to an O-ring seal can so through an undercut or a Undercut of the sealing lip 220 an improvement of a compromise with respect to a reduction of the forces occurring and an increase in the tolerance range can be achieved. For example, by a arranged at a different angle of 90 ° angle sealing lip 220 a larger compensation range or tolerance range can be achieved. Depending on the specific implementation, it may be advisable to provide a bias, for example, on a geometry of the sealing lip 220 in a substantially unloaded condition and / or deformation of the sealing lip 220 is due. As a result, the sealing lip 220 for example, with the discrete component 150 stay in contact. This can be done by the sealing lip 220 with increasing or falling (air) pressure further outward or inward moves and thus upwards, perpendicular to the surface of the discrete component 150 hires. Thus, for example, without a large bias by the geometric design, a larger sealing gap, which may result from tolerances are compensated. The use of an example V-shaped sealing lip 220 Thus, if necessary, the mechanical stress (load) on the actual sensor can be reduced.

However, it may also be possible that the sealing lip 220 in a pressureless or unloaded state relative to the discrete component 150 having with this a sealing gap, so for example can be installed without bias in this state.

16 shows a perspective view of the tire monitoring system 100 with the first module 110-1 and the second module 110-2 after another manufacturing process. Within this is the seal 210 in the seal seat 600 of the supply line component 180 been used and the circuit boards 260 the two modules 110-1 . 110-2 in the corresponding recesses 360 been used.

16 shows here that the prestressing structure 650 the previously mentioned screw 770 includes, with the help of which the printed circuit board 260 and the thread in the spacer component 640 (not shown in 16 ) against the spacer component 640 is pressed and so the seal 210 (also in 16 not shown) is pressed. This can be a preload on the seal 210 which are in direct contact with the surface 160 of the discrete component 150 stands.

Also with regard to the second module 110-2 is the circuit board 260 via corresponding screw elements 770 against the relevant distance components 640 pressed, however, in the representation of the 16 are not shown. The distance components 640 again have a surface, against the circuit board 260 over the screw elements 770 is pressed. The distance components 640 in this case have an internal thread into which a corresponding external thread of the screw 770 intervenes. The screw elements 770 For example, they may have another surface or abutment surface against which the circuit board 260 at a distance component 640 opposite side is pressed. The screw elements 770 Thus, for example, can have a thread-free, cylindrical portion which through the corresponding holes in the circuit board 260 engages and is disposed between the external thread and the abutment surface against which the circuit board by tightening the screw 770 is pressed. At the side facing away from the external thread of the contact surface is followed - optionally behind an optional transition region - an external hex, which, for example, for mounting the screw 770 can serve. Of course, the screw can 770 be executed differently, for example in the form of simple screws or other configurations.

The screw elements 770 In addition, as well as as part of the spacer 280 serve. The here in 16 shown screw elements 770 have a hole for this reason 780 with an internal thread into which a screw, for example, for mounting the module 110-2 on the fastening component 250 , is einbringbar. The spacer 280 thus has a bearing surface on which the circuit board 260 in the assembled state rests. It further comprises the screw element 770 that the circuit board 260 Fixed on a side facing away from the support surface.

With regard to the second module 110-2 can the distance components 640 (not shown in 16 ), for example, have an external thread, which passes through corresponding holes in the circuit board 260 reaches through. About this can at least one spacer 280 , for example, has a hexagonal outer contour, with the circuit board 260 be mechanically connected, so this, as related to 4 has already been explained, mechanical vibrations of a fastening component 250 on the circuit board 260 can transfer.

The spacer 280 can with the in 16 not shown fastening component mechanically connected, for example, be screwed. To also about this connection of the circuit board 260 With the environment to make it difficult for contaminants, such as water, to penetrate, the at least one spacer may be enclosed, for example, by a potting compound, which, however, can be enclosed in a potting compound 16 not shown. This can be a Material contact can be established, which can reduce the described penetration at least, if not completely eliminate. To reduce, for example, the formation of a short circuit by such impurities, such as water, may also be a corresponding mounting structure for the mounting of the spacer 280 , For example, a corresponding hole, as well as an environment are provided, as this in connection with 13 and the environment shown there 730 has been described.

In addition, the illustration shows the 16 that the second module 110-2 an energy source 340 having. This can for example comprise an electrochemical energy source, so for example a battery and / or an accumulator. At the energy source 340 It can also be a component 330 Act like this related to 4 has already been explained. More specifically, the energy source 340 as they are in 16 shown is a button cell, which has an electrically conductive holder 800 both the circuit board 260 and their circuit of the second module 110-2 as well as over the cable 130 the circuit board 260 and her circuit of this module 110-1 supplied with electrical energy. In other words, in a tire monitoring system 100 as it is in 16 is shown, the first module 110-1 over the flexible cable 130 at least partially with electrical energy of the energy source 340 of the second module 110-2 supplied with electrical energy.

As has already been mentioned several times, has in the embodiment shown here, the flexible cable 130 exactly two subcables 440 on, which are also referred to as lines. About these are the first module 110-1 and the second module 110-2 electrically connected to each other. As a result, not only a cabling effort can be reduced, but it can also possibly a smaller and thus possibly mechanically resilient flexible cable 130 be put to use.

Due to the fact that the flexible cable 130 only the two sub-cables 440 has or in other embodiments, if necessary, only partial cable 440 so can the first module 110-1 Although fluidly be connected to the fluid filled or filled interior of the tire, the first module 110-1 and the second module 110-2 However, they are typically designed fluidly separated from each other. In other words, over the flexible cable 130 in such a case, no exchange of the fluid, so for example, the gas or gas mixture from the interior of the tire, of the first module 110-1 to the second module 110-2 respectively. In other words, the second module 110-2 be fluidly separated from the interior of the tire.

16 Thus, so shows a perspective view of the tire monitoring system or tire pressure monitoring system and its housing with the mounted hardware.

17 shows a schematic cross-sectional view through the module 110-1 in a mounted state. So shows 17 the feeder section 620 of the supply line component 180 with the opening 200 which the in 17 not shown channel 190 of the supply line component 180 Fluidtechnisch with the detection area 170 of the discrete component 150 combines. As previously explained, this is the discrete component 150 on the circuit board 260 electrically and mechanically connected, wherein the electrical circuit board via the designed as a press-fit contacts contact structures 660 with the in 17 not shown sub-cables 440 electrically connected. In addition, shows 17 the spacer component 640 the bias structure 650 as well as the associated screw elements 770 , which in a corresponding thread of the spacer component 640 engage or otherwise engage or can be engaged with them.

In addition, shows 17 the seal seat 600 , which is in the area of the feeder section 620 is formed, and in which the seal 210 is included. Here, however, is the seal 210 shown in a relaxed state, wherein the sealing edge 760 just not with the surface 160 of the discrete component 150 in contact. Rather, the sealing lip 220 deformed during assembly so that this contrary to the representation of 17 with the surface 160 of the discrete component 150 is in contact, so from the bias structure 650 against the supply line component 180 is pressed. This is how the sealing space forms 230 radially inward of the sealing lip 220 relative to the symmetry axis of the seal 210 that essentially coincides with the bore axis of the opening 200 or the symmetry axis of the seal seat 600 matches.

17 shows the interface between the hardware, ie the electronic components of the module 110-1 and its mechanical components.

A specially shaped seal 210 with a flexible sealing lip 220 causes here the seal of the interface between the also referred to as valve extension supply line component 180 and the discrete component 150 (SMD-pressure sensor). The seal can compensate for tolerances in the overall system.

Due to the already described embodiment of the outer shape of the cross sections starting from the sealing edge 760 in the unloaded state of the seal 210 can increase the air pressure, for example when mounting the module 110 to a tire, the flexible sealing lip 220 move outward and, for example, a lower axial bias the contact area between the discrete component 150 and its surface 160 and the seal 210 strengthen and enlarge.

The axial preload of the seal 210 can be over the distance between the upper surface 160 of the discrete component 150 and the reason of the sealing space 230 be determined. During the assembly process, the printed circuit board is inserted into the housing 400 pressed until the circuit board 260 in contact with the spacer component 640 So the threaded insert of the housing 400 stands. As a result, so can a nominal sealing bias through the housing 400 or its geometry can be defined. More specifically, the bias voltage defines a distance between the seal chamber bottom and the contact area of the spacer component 640 , Another influence of the discrete component 150 in terms of its height and the design of the seal 210 ,

Next to the discrete component 150 is additionally using the screw 770 the circuit board 260 attached, so that thermal and mechanical influences that relate to the seal can be reduced, possibly even minimized. As will be described below, can be used by an appropriate potting compound, such as a Polyurethanvergussmasse the electrical industry (PU = polyurethane) to achieve an additional seal and shield the hardware, so the electronic components from the environment. The potting compound 370 Can be used to make the recess 360 in which the circuit board 260 is arranged to close.

18 shows a perspective view of the tire monitoring system 100 after a further process step, in the context of which the recess 360 with the potting compound 370 is closed. In 18 however, these are not on any of the modules due to the perspective shown there 110 seen. 18 shows the tire monitoring system 100 after another casting process of the cable 130 and closing the recess 360 (not shown in 18 ) through the potting compounds 370 (not shown in 18 ) of the two modules 110-1 . 110-2 ,

The housing 400 as they are in 18 are shown, although not integrally formed, but made in one piece. Under an integrally formed component is understood as one which is made exactly from a contiguous piece of material. An integrally manufactured, provided or manufactured component or structure or a component or structure produced, prepared or manufactured integrally with at least one further component or structure is understood to mean one which, without destroying or damaging one of the at least two components involved, is not affected by the at least another component can be separated. A one-piece component thus also represents at least one component manufactured integrally with another structure of the relevant component or one-piece component.

Other housings 400 Of course, if necessary, they can be made in one piece.

19 shows a perspective view of the tire monitoring system 100 , after to the second module 110-2 Furthermore, the fastening component 250 with the housing 400 of the second module 110-2 was connected. 20 shows one 19 corresponding perspective view, but in which the tire monitoring system 100 from a back compared to the appearance of the 19 will be shown. As already explained above, here is the fastening component 250 designed sheet-like and is with the housing 400 of the second module 110-2 about at least one screw, more specifically in the embodiment shown here using two screws 810 about in the 19 and 20 no longer recognizable spacer bolted. In other words, in the module described here 110-2 the at least one spacer 280 bolted to the fastening component.

To the fastening component 250 For example, with the wheel bolts, which are also used to fix the rim to mechanically connect to the rim, this has two holes 820 on which are just designed so that the corresponding wheel bolts pass through it, so that by means of appropriate nuts, the second module 110-2 with two adjacently arranged bolts, for example, the wheel carrier with the rim mechanically connected via corresponding nuts or can be mechanically coupled.

In a tire monitoring system 100 as it is in the 19 and 20 For example, the second module may be so 110-2 be fastened to a rim, wherein the rim together with the tire at least partially forms a wheel of a vehicle.

In the thus implemented tire monitoring system 100 Thus, different design features can be implemented to protect the hardware against moisture, water, and similar environmental influences and conditions. For example, long Vergussdistanzen the cable sleeves, so the cable feed sections 430 , appropriate flexible cables 130 and potting the protruding contact structures 660 to prevent corrosion of the components of the circuit board 260 next to the contact structures 660 be implemented. Likewise, the sealing structures and counter-sealing structures 380 . 390 , For example, in the illustrated labyrinth design, in the context of the preform (first sub-housing 350-1 ) and according to the second part housing 350-2 be implemented to create a water entry between the two sub-housings 350-1 . 350-2 , So to avoid the preform and the final injection mold. In addition, using the potting compound 370 the circuit board 260 with only a few contact points on the housing 400 be attached, for example via the spacer components 640 (Threaded inserts), screws and the contact structures designed as press-fit contacts 660 ,

The 21a . 21b and 21c show perspective views of tire monitoring systems 100 in which, for example, different lengths of the flexible cable 130 are implemented. In addition, the supply line components may become 180 differ from each other in terms of their geometric configuration. Likewise, the holes 820 the fastening components 250 be different from each other with respect to their diameters and arrangements, for example, their distances, so as to be able to cover different, typical rims of trucks and other vehicles. Here corresponds to the in 21c illustrated version substantially the previously described version of a tire monitoring system 100 , The 21a and 21b show further embodiments of a tire monitoring system 100 , Of course, in addition to the obvious changes, other, deeper changes in different tire monitoring systems 100 be implemented. For example, different sealing concepts, different physical quantities or similar parameters, which are not obvious at first glance, can be implemented. So if necessary the second modules 110-2 be formed in different embodiments once to detect the mechanical vibration behavior of the rim or the associated wheel, while in other tire monitoring systems 100 the module concerned 110-2 is currently unable to do so.

However, as the foregoing discussion has shown, the sensor design presented herein and the tools used therefor make possible a modification of the subject tire monitoring systems 100 in terms of cable lengths and other more mechanically oriented parameters, without the need for major effort or additional tooling costs. The system described can be used so cost-effectively to different tire monitoring systems 100 according to an embodiment, with the aid of which different types of tires can be produced. The 21a . 21b and 21c illustrate some possible variants of a tire monitoring system 100 ,

By using a module 110 For detecting a vibration behavior of a mechanical component, it may be possible to improve a trade-off in ease of integration, ease of manufacture, robustness, reliability and accuracy of detecting the vibration behavior. By using a tire monitoring system and / or a method of monitoring a tire, it may be possible to improve a compromise on integration, manufacturability, robustness and accuracy of monitoring a tire. By employing a module for detecting a physical size of a gaseous medium, it may be possible to improve a tradeoff in ease of integration, ease of manufacture, robustness, reliability, and accuracy of a physical quantity detection module. Also, it may be possible to have a module 110 which provides an improvement in a trade-off in ease of integration, ease of manufacture, ruggedness, reliability and accuracy in the module 110 implemented circuit allows.

Although some aspects have been described in the context of a device, it will be understood that these aspects also constitute a description of the corresponding method, so that a block or a component of a device is also to be understood as a corresponding method step or as a feature of a method step. Similarly, aspects described in connection with or as a method step also represent a description of a corresponding block or detail or feature of a corresponding device.

An exemplary embodiment can thus be implemented, for example, as a program with a program code for carrying out a method according to an embodiment, when the program on a programmable hardware component. The individual method steps can be achieved by activating corresponding actuators, reading out memory locations or other data sources, numerical and other manipulations of data and other processes. As part of such a program, but also in the context of other implementations of a method according to an embodiment, so the individual processes, for example, a generating, providing and optionally receiving control signals, sensor signals and other signals include. The sending may also include writing or storing a value in a memory location or register. Accordingly, reading out or receiving can also include a corresponding readout of a register or a memory location. These signals can be transmitted, for example, as electrical, optical or radio signals and can be configured independently of one another continuously or discretely with regard to their signal values and their chronological design. The corresponding signals may thus include, for example, analog signals, but also digital signals.

Depending on particular implementation requirements, embodiments of the invention may be implemented in hardware or in software. The implementation may be performed using a digital storage medium, such as a floppy disk, a DVD, a Blu-Ray Disc, a CD, a ROM, a PROM, an EPROM, an EEPROM or FLASH memory, a hard disk, or other magnetic disk or optical memory are stored on the electronically readable control signals, which can cooperate with a programmable hardware component or cooperate such that the respective method is performed.

A programmable hardware component may be integrated by a processor, a central processing unit (CPU), a graphics processing unit (GPU), a computer, a computer system, an application-specific integrated circuit (ASIC) Circuit (IC = Integrated Circuit), a system on chip (SOC) system, a programmable logic element or a field programmable gate array with a microprocessor (FPGA = Field Programmable Gate Array) may be formed.

The digital storage medium may therefore be machine or computer readable. Thus, some embodiments include a data carrier having electronically readable control signals capable of interacting with a programmable computer system or programmable hardware component such that one of the methods described herein is performed. One embodiment is thus a data carrier (or a digital storage medium or a computer readable medium) on which the program is recorded for performing any of the methods described herein.

In general, embodiments of the present invention may be implemented as a program, firmware, computer program, or computer program product having program code or data, the program code or data operative to perform one of the methods when the program resides on a processor or a computer programmable hardware component expires. The program code or the data can also be stored, for example, on a machine-readable carrier or data carrier. The program code or the data may be present, inter alia, as source code, machine code or bytecode as well as other intermediate code.

Another embodiment is further a data stream, a signal sequence, or a sequence of signals that represents the program for performing any of the methods described herein. The data stream, the signal sequence or the sequence of signals can be configured, for example, to be transferred via a data communication connection, for example via the Internet or another network. Embodiments are also data representing signal sequences that are suitable for transmission over a network or a data communication connection, the data representing the program.

For example, a program according to one embodiment may implement one of the methods during its execution by, for example, reading or writing one or more data into memory locations, optionally switching operations or other operations in transistor structures, amplifier structures, or other electrical, optical, magnetic or caused by another operating principle working components. Accordingly, by reading a memory location, data, values, sensor values or other information can be detected, determined or measured by a program. A program can therefore acquire, determine or measure quantities, values, measured variables and other information by reading from one or more storage locations, as well as effect, initiate or execute an action by writing to one or more storage locations and control other devices, machines and components and so for example by means of actuators perform more complex process steps.

The embodiments described above are merely illustrative of the principles of the present invention. It will be understood that modifications and variations of the arrangements and details described herein will be apparent to others of ordinary skill in the art. Therefore, it is intended that the invention be limited only by the scope of the appended claims and not by the specific details presented in the description and explanation of the embodiments herein.

The features disclosed in the foregoing description, the appended claims and the appended figures may be taken to be and effect both individually and in any combination for the realization of an embodiment in its various forms.

LIST OF REFERENCE NUMBERS

100

 Tire monitoring system

110

 module

120

 connection

130

 flexible cable

140

 information signal

150

 discrete component

160

 surface

170

 detection range

180

 supply component

190

 channel

200

 opening

210

 poetry

220

 sealing lip

230

 tight space

240

 outer space

250

 attachment member

260

 circuit board

270

 circuit

280

 spacer

290

 Job

300

 drilling

310

 predetermined direction

320

 projection direction

330

 component

340

 energy

350

 Enclosures

360

 recess

370

 potting compound

380

 sealing structure

390

 Against sealing structure

400

 casing

410

 direction

420

 outer space

430

 Cable feed section

440

 Component cable

450

 contact point

460

 reference point

470

 curved course

480

 Just

490

 supporting member

500

 Area

510

 terminal structure

520

 Tire valve interface

530

 Valve Extension mother

540

 valve core

550

 Area

560

 end cap

570

 Valve

580

 radial rotary bolt

590

 axial rotary bolt

595

 flank

600

 seal seat

610

 surface

620

 lead portion

630

 recess

640

 spacer component

650

 biasing structure

660

 Contact structure

670

 opening

680

 drilling

690

 lateral surface

700

 guide recess

710

 drilling

720

 Contact structure

730

 Surroundings

740

 main surface

750

 management structure

760

 sealing edge

770

 screw

780

 drilling

800

 bracket

810

 screw

820

 drilling

Claims (10)

Tire monitoring system ( 100 ) for monitoring a tire, comprising: a first module ( 110-1 ) configured to detect at least one physical quantity related to the tire and to provide a measurement signal based on the at least one detected physical quantity; and a second module ( 110-2 ), which has a flexible cable ( 130 ) with the first module ( 110-1 ) is coupled and designed to detect the measurement signal and based on the detected measurement signal an information signal ( 140 ) to transmit wirelessly. Tire monitoring system ( 100 ) according to claim 1, in which the measuring signal is transmitted via the flexible cable ( 130 ) from the first module ( 110-1 ) to the second module ( 110-2 ) is transmitted. Tire monitoring system ( 100 ) according to claim 2, wherein the second module ( 110-2 ) an energy source ( 340 ), a battery or an accumulator, and in which the first module ( 110-1 ) via the flexible cable ( 130 ) is at least partially supplied with electrical energy. Tire monitoring system ( 100 ) according to one of claims 2 or 3, wherein the flexible cable ( 130 ) exactly two sub-lines ( 440 ) through which the first module ( 110-1 ) and the second module ( 110-2 ) are electrically connected together. Tire monitoring system ( 100 ) according to one of the preceding claims, in which the first module ( 110-1 ) is fluidly connectable with a fillable or filled with a fluid interior of the tire. Tire monitoring system ( 100 ) according to claim 5, wherein the first module ( 110-1 ) and the second module ( 110-2 ) are executed fluidly separated from each other. Tire monitoring system ( 100 ) according to one of claims 5 or 6, in which the first module ( 110-1 ) is adapted to be mechanically connectable with a valve of the tire. Tire monitoring system ( 100 ) according to claim 7, wherein the first module ( 110-1 ) is formed to fill the interior of the tire with the fluid. Tire monitoring system ( 100 ) according to one of the preceding claims, in which the second module ( 110-2 ) Is attachable to a rim, wherein the rim together with the tire at least partially forms a wheel of a vehicle. A method of monitoring a tire, comprising: detecting (P100) at least one of a tire-related physical quantity in a first module ( 110-1 ); Providing (P110) a measurement signal based on the at least one detected physical quantity in the first module ( 110-1 ); Detecting (P120) the measurement signal in one with the first module ( 110-1 ) via a flexible cable ( 130 ) coupled second module ( 110-2 ); and wireless transmission (P130) of an information signal based on the detected measurement signal ( 140 ).

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