WO2015064807A1

WO2015064807A1 - Leak detection device and remote monitoring system using same

Info

Publication number: WO2015064807A1
Application number: PCT/KR2013/009975
Authority: WO
Inventors: 유홍근
Original assignee: (주)유민에쓰티; 유홍근
Priority date: 2013-10-29
Filing date: 2013-11-06
Publication date: 2015-05-07

Abstract

The present invention relates to a leak detection device and a remote monitoring system using the same, and the purpose of the present invention is to enable accurate determination of multiple leak occurrence locations by connecting a plurality of leak sensing films in series by a plurality of slave controllers having a connector, detecting a leak occurring between slave controllers and transmitting the detection result to a remote master controller. In addition, another purpose of the present invention is to provide a remote monitoring system capable of confirming whether there is a leak at a remote place by using a device for controlling the leak sensing films.

Description

Leak Detection Device and Remote Monitoring System Using the Same

The present invention relates to a sensor and a system capable of remotely monitoring the leak detection, in particular, when a plurality of leaks are detected in the leak detection device having a tape shape, it is possible to determine the exact position, and also to monitor this remotely The present invention relates to a leak detection device that can be used and a remote monitoring system using the same.

Various leak sensors are used to detect leaks and leaks in case of leaks and leaks.

Representative examples include cable type leak sensors, band type leak sensors, and modular leak sensors.

The cable type leak sensor is a leak and leakage sensor that detects the exposure of various liquids (water, oil, etc.) and quickly and accurately informs the point where the liquid leaks.

Leakage and leakage are the currents flowing along the wire to detect the change of the voltage (potential difference) by the resistance of the leaked liquid with a detection line, it is possible to confirm the leak and leakage and to confirm the exact point.

However, such a cable type leak sensor is expensive to install and the sensor cable length is fixed, so the customer has a small choice (7M, 15M, 30M). In addition, there is a problem that it is difficult to install and additional cost because the separate bracket must be used when installing the sensor, it takes a lot of time to remove the leak after detecting the leak, it is difficult to connect to an external device.

BAND TYPE LEAK DETECTION SENSOR changes resistance value when water touches wire while current flows through wire. Therefore, it is possible to detect whether there is a leak in accordance with the change in the resistance value.

The resistance that can be operated by the leak sensor is 0Ω to 50MΩ, the output is 100mA at 30V DC (maximum), the wiring length is 50m maximum, and the band sensor length is 10m maximum.

Such a band type leak sensor can detect a large area of leakage at low cost and is easy to install, but has a high error occurrence rate due to high humidity or external shock, and easily checks the exact location of leakage. There is a problem that can not be installed, there is a product installation roughness because there is no connection of the installation, there was a problem that you need to use a lot of investment in the network (PC) or PC (PC) use. In addition, the length of the leak detection sensor cable is fixed, so the customer choice is small (1M, 2M, 5M, 10M, 20M).

In addition, there is a problem that the price is expensive compared to the performance, there is a problem that is difficult to install and additional cost because the bracket to be fixed to the floor separately installed, there is no connection device other than the simple relay contact method when connecting external equipment There is this.

The modular leak sensor locates a photo sensor (a light receiving part, a light emitting part) in a plastic case, and receives a beam of the light emitting part from the light receiving part without detecting liquid, but allows the light beam of the light beam to detect liquid. When the refractive index changes, the beam BEAM does not go to the light receiving unit.

At this time, the module sensor (MODULE SENSOR) detects the leak. The input voltage of this device is 12V DC ~ 24V DC, the response time is 50ms, the operating temperature is -10 ℃ ~ 60 ℃ and the sensor case is polypropylene.

The modular leak sensor can detect leaky parts at low cost, is easy to install, can generate its own alarm and alarm light regardless of peripheral devices, and there are no errors due to humidity. Unlike cable type, there is a problem that can check only leakage of a specific location, and it is difficult to connect with a peripheral device, and it requires a lot of time when installing the product because it needs to plan a separate sensor fixing method. There is a problem, and since only a specific part of the leaky danger area can be detected, there is a problem that it is difficult to detect when the leaking position is changed.

In order to solve this problem, the applicant has applied for a plurality of patents regarding the tape type leak detection sensor, and typically, Korean Patent No. 10-0827385.

1 to 4 illustrate the structure of Patent No. 10-0827385, wherein the tape-like leak sensing film 10 includes an adhesive layer 20, a base film layer 30, a conductive line layer 40, The protective film layer 50 is laminated | stacked sequentially from the bottom face upward.

The adhesive layer 20 is to be attached to the place where the leak occurs, it is configured in the form of an adhesive tape, the base film layer 30 is a layer for forming the conductive line layer 40 on the top, the insulating and conductive line layer The pattern of 40 is formed of PET, PE, PTFE, PVC or other Teflon-based materials to form the printing method.

The conductive line layer 40 is a layer in which a plurality of

resistance lines

41 and 42 and

signal lines

43 and 44 are formed on the upper surface of the base film layer 30 in the form of a strip. A pair of

resistance lines

41 and 42 are formed to be spaced apart from each other in parallel to each other in the longitudinal direction of the cross-section, and the

signal lines

43 and 44 are respectively outside the

resistance lines

41 and 42 to the leak sensing film 10. Are spaced apart from each other in the longitudinal direction of the parallel.

In addition, the resistance line 41 and the signal line 43 are connected to each other by a separate connector at the end of the leak sensing film 10, and the resistance line 42 and the signal line 44 are connected to each other.

The protective film layer 50 is stacked on top of the conductive line layer 40 to protect the pattern of the conductive line layer 40 from external magnetic poles.

FIG. 2 is a view showing the formation of the conductive line layer 40, and is composed of

resistance lines

41 and 42 printed with a conductive ink and

signal lines

43 and 44 printed with a silver compound.

The

resistance lines

41 and 42 and the

signal lines

43 and 44 constitute a leak detection circuit.

In addition, as illustrated in FIG. 3, the sensing holes 51 are formed in the protective film layer 50 at predetermined intervals so that only the

resistance lines

41 and 42 of the conductive line layer 40 are formed through the sensing holes 51. Ensure exposure to the outside.

FIG. 4 is a view illustrating a state in which the plurality of leak sensing films 10 are extended and connected to the controller 2. When the distance for leak detection is relatively long, the plurality of leak sensing films 10 may be connected to the connector 7. Can be connected to extend in series.

In addition, the connector 6 connects the

resistance lines

41 and 42 to the

signal lines

43 and 44 so as to be connected to the controller 2 through the cable 1.

Therefore, when the leak L1 occurs in the leak sensing film 10, the leak L1 is introduced through the sensing hole 51 of the protective film layer 50, and the resistance line (L1) is introduced by the leak L1. 41, 42 are energized with each other.

Accordingly, the resistance values of the

resistance lines

41 and 42 are fluctuated, and the changed resistance values are transmitted to the controller 2 via the

signal lines

43 and 44, and the controller 2 is in the fluctuation state of these resistance values. In addition, it is determined whether or not the leak according to the position of the leakage (L1) according to the magnitude of the resistance value.

In other words, if the resistance value is large, the position of occurrence of the leak is far from the controller 2 by the magnitude of the resistance value alone. If the resistance value is small, the leakage position is closer to the controller 2, so that the controller 2 is previously known. The exact position can be determined from the table of stored resistance values and distances.

However, in this case, when the leak detection range is long distance, for example, 1 kilometer or more, a plurality of leak sensing films 10 connected in series are installed. When one or more leaks L1 and L2 occur, the controller In (2), it is possible to determine whether or not a leak has occurred, but the position of the leaks L1 and L2 cannot be confirmed.

That is, when only one leak occurs, the position can be determined by the variation and magnitude of the resistance value. However, when a large number of leaks (L1, L2) occur, the resistance values of the leak (l1, L2) generation positions are all Since the sum is input to the controller 2, resistance values for completely different leak positions are confirmed.

For this reason, when a leak occurs, the manager has to check the long distance section with the naked eye, so there is a problem in that rapid measures for the leak cannot be made.

The present invention has been proposed to solve the above problems, and connects a plurality of leak sensing films in series by a plurality of slave controllers having a connector, and detects a leak occurring between the slave controllers to remotely master. Its purpose is to allow multiple leaks to accurately determine where they occur by transmitting to a controller.

In addition, another object of the present invention is to provide a remote monitoring system that can check whether there is a leak at a remote location using a control device of the leak sensing film.

Leak detection apparatus of the present invention for achieving the above object,

A leak sensing film having a pair of resistance lines for sensing a leak on an upper surface of the base film in the form of a tape in parallel in the longitudinal direction;

And a plurality of slave controllers for extending and connecting the plurality of leak sensing films in series.

When the leak is detected on the leak sensing film, slave controllers connected to both ends of the leak sensing film are configured to add their ID to the leak sensing signal and transmit the leak to the master controller.

In addition, the remote monitoring system using the leak detection device,

A wireless communication module is provided in the master controller to wirelessly transmit the leak sensing signal transmitted from the slave controller to an integrated alarm module at a remote location. The integrated alarm module wirelessly receives the leak sensing signal and transmits the leak sensing signal to a local PC. The PC is configured to receive, store, and manage the leak sensing signal, and to generate an alarm according to whether or not the leak occurs.

As described above, according to the present invention, even if a leak occurs in a plurality of locations, it is possible to accurately determine whether the leak occurs as well as the location, so that a quick action is possible, and also leak sensing to a remote local PC through a master controller. By sending a signal, alarms can be generated and stored and managed by remote managers, enabling immediate and efficient actions in the event of a leak.

1 is a cross-sectional view of a conventional leak detection apparatus.

2 is a view showing the structure of the conductive line layer of FIG.

3 shows the structure of a protective film layer.

4 is a view showing a state in which the leak sensing film and the master controller is connected.

5 is a view showing a structure of a leak sensing film according to the present invention.

Figure 6 shows the structure of a slave controller applied to the present invention.

7 illustrates a circuit configuration of a slave controller.

8 is a view for explaining a sensing state when an object is placed on the leak sensing film.

9 is a view showing the configuration of a remote monitoring system using the leak detection apparatus of the present invention.

Hereinafter, the present invention will be described in detail with reference to FIGS. 5 to 9.

5 is a view illustrating a structure of a leak sensing film 100 applied to the present invention, and includes an adhesion layer 110, a lower film layer 120, an upper film layer 130, and a protective film layer 140.

The adhesive layer 110 is to be attached to the floor or the wall, is located on the lower surface of the lower film layer 120, double-sided tape or the like can be used.

The lower film layer 120 is formed of PET, PE, PTFE, PVC or other Teflon-based materials, and the upper surface has a pair of

power supply lines

121 and 122 and a pair of

communication lines

123 and 124 on the lower film layer ( 120 is spaced apart from each other in the longitudinal direction and arranged in parallel strip form.

The

power supply lines

121 and 122 and the

communication lines

123 and 124 are formed by a printing method using a conductive ink or silver compound.

The upper film layer 130 is stacked on top of the lower film layer 120, and a pair of

resistance lines

131 and 132 are formed on the upper surface of the upper film layer 130 in the lengthwise direction of the upper film layer 130. Spaced apart and arranged in parallel strip form, which is also formed by printing with a conductive ink or a silver compound.

The protective film layer 140 is stacked on the upper film layer 130. The protective film layer 140 has

resistance lines

131 and 132 to expose the

resistance lines

131 and 132 of the upper film layer 130 to the outside. A plurality of sensing holes (141, 142) are formed in the longitudinal direction at the position corresponding to the.

Meanwhile, a slave controller 200 having a connector is provided to extend the leak sensing film 10 over a long distance. As shown in FIG. 6, a PCB 220 is embedded in the housing 201 of the slave controller 200. In addition,

connectors

210 and 211 are provided at both sides of the PCB 220.

Accordingly, each end of the leak sensing film 100 is connected to the

connectors

210 and 211 so that the

power supply lines

121 and 122 and the

communication lines

123 and 124 of the lower film layer 120 and the resistance lines of the upper film layer 130 are formed. 131 and 132 are electrically connected to the inside of the slave controller 200.

At this time, each of the

connectors

210 and 211 is provided in two upper and lower stages, and the lower film layer 120 is connected to the lower connector, the upper film layer 130 is connected to the upper connector, and the upper film layer 120 is a slave. On the upper surface of the PCB 220 provided in the controller 200, the lower film layer 130 is connected to the lower surface of the PCB 220, respectively, are independently separated and connected.

Therefore, through the slave controller 200, it is possible to continuously extend the leak sensing film 100 in series, and the slave controller located at the first stage is connected to the master controller 300 as shown in FIG.

The slave controller 200 is supplied with operating power through the

power supply lines

121 and 122, and the

power supply lines

121 and 122 and the

signal lines

123 and 124 connected to the connector 210 of one side to the connector 211 of the other side. By connecting the power and the signal supplied from the master controller 300 to the neighboring slave controller.

7 is a view showing the structure of the circuit unit 221 mounted on the PCB 220 of the slave controller 200, receiving the operating power through the power supply line (121, 122), RS485 communication line from the master controller 300 The leak sensing data is transmitted while receiving the control command through the 123 and 124.

As shown in FIG. 8, when the leak L1 is generated and flows through the sensing holes 141 and 142, the

resistance lines

131 and 132 are energized with each other, and the controller 221 recognizes the energized state and leaks when the energization occurs. The ID stored in the ID storage unit 222 is added to the sensing signal and output to the amplifier 223.

In this case, the ID may be a digital signal or an analog signal level of the slave controller itself.

To this end, the controller 221 must have an A / D converter on its own to convert an analog type leak sensing signal into a digital signal, and in the case of an analog signal, convert the signal level.

The amplifier 223 is amplified to a size suitable to be transmitted to transmit to the master controller 300 through the communication line (123,124).

Meanwhile, as shown in FIG. 8, a plurality of leaks L3 and L4 may occur across the leak sensing films 100 and 100-1, and in the case of the leak L3, the controller 200-1 adjacent to the controller 200. Since the two controllers 200 and 200-1 transmit the leak sensing signal to which the respective IDs are added to the master controller 300 through the communication line.

Accordingly, the master controller 300 recognizes that a leak has occurred between the controllers 200 and 200-1.

Similarly, since the leak L4 generated at the same time as the leak L3 is also generated in the leak sensing film 100-1 between the controller 200-1 and the neighboring controller 200-2, the ID of the leak L4 is determined by the leak sensing signal. In addition to this it can be transmitted to the master controller 300 through the communication line.

Therefore, even if multiple leaks occur, whether or not the leak occurs is accurately determined by the controllers located at both sides of the leaked position.

On the other hand, if the object (M) is placed on the upper surface of the leak sensing film (100,100-1, ...) as shown in Figure 8, even if a leak occurs, it is interrupted by the object (M) is not detected leak May occur.

In order to detect the case in which the object (M) is placed, the slave controllers 200, 200-1, 200-2, ... are simultaneously provided with ultrasonic transmitters 224 and ultrasonic receivers 225 on both sides in directions facing each other. The controller 221 outputs its ID to the ultrasound transmitter 224, and the ultrasound transmitter 224 adds the ID to the ultrasound signal and transmits the ID to the neighboring slave controller.

The ultrasonic receiver 225 receives the ultrasonic signal transmitted from the neighboring slave controller and provides the received signal to the controller 221. At this time, the controller 221 extracts the ID from the ultrasonic signal and the neighboring slave controller. In case of ID, it is determined that the ultrasonic signal is normally received by the object M without being disturbed.

On the other hand, when the ID is received, since the ultrasonic signal is reflected on the object M and received, it is determined that the object M is placed on the upper surface of the leak sensing film 100, and the ID is detected in the object detection signal. In addition, by transmitting to the master controller 300 through the amplifier 223 and the

communication lines

123 and 124 to generate an alarm alarm.

In addition, the ultrasonic transmitter 224 and the ultrasonic receiver 225 may have the same function and effect when the infrared transmitter and the infrared receiver are replaced, respectively.

9 is a diagram illustrating a remote monitoring system using the leak detection apparatus of the present invention, wherein the leak sensing signal and the object detection signal detected through each slave controller 200 are configured to be transmitted to the master controller 300. This structure can be installed in plurality.

The master controller 300 is provided with a wireless communication module, to wirelessly transmit the leak sensing signal and the object detection signal transmitted from the slave controller 200 to the integrated alarm module 400, the integrated alarm module 400 is The leak sensing signal transmitted from the plurality of master controllers 300 is received and transmitted to the local PC 500 through RS485 communication.

Therefore, the local PC 500 receives the leak sensing signal and the object detection signal to generate an alarm according to whether the leak occurs and whether the object is detected. For example, when connected to a mobile communication network, a text message is sent to the administrator. An alarm can be triggered through the server, and as another example, an administrator can be notified of the current status through an e-mail.

In addition, the local PC 500 stores the state data in its own database so that management can be performed.

On the other hand, if you want to apply a specific control command from the local PC 500 to the slave controller 200, that is, a command to adjust the sensing sensitivity, signal level, amplification factor, etc., the control command from the local PC 500 is RS485 communication Is applied to the integrated alarm module 400, the master controller 300 is wirelessly received a control command from the integrated alarm module 400 through the RS485 communication line (123, 124) of the leak detection film 100 slave controller ( 200).

Therefore, the controller 221 of the slave controller 200 can perform its control command.

Claims

A leak sensing film having a pair of resistance lines for sensing a leak on an upper surface of the base film in the form of a tape in parallel in the longitudinal direction;

And a plurality of slave controllers for extending and connecting the plurality of leak sensing films in series.

And detecting a leak in the leak sensing film, the slave controllers connected to both ends of the leak sensing film are configured to add their ID to the leak sensing signal and transmit the ID to the master controller.
The method of claim 1, wherein the leak sensing film is composed of two layers stacked,

In the lower layer, a pair of power supply lines and a pair of communication lines are formed to be spaced apart from each other in the longitudinal direction.

Leak detection apparatus, characterized in that the upper layer is formed with resistance lines side by side in the longitudinal direction.
The leak detection apparatus of claim 1 or 2, wherein the slave controller transmits the leak sensing signal to the master controller through a communication line formed on the lower layer of the leak sensing film.
The method of claim 1 or 2, wherein the slave controller is

In addition to being configured to receive operating power from the master controller through the power supply line, the slave controller is provided with a connector for connecting the lower and upper layers of the leak sensing film, respectively at both ends,

Inside the slave controller,

ID storage unit for storing the own ID of the slave controller;

A controller which receives the leak sensing signal detected from the signal line of the leak sensing film and adds and outputs its own ID stored in an ID storage unit;

And an amplifier configured to receive and amplify the output of the controller and transmit the amplified signal to the master controller through a communication line.
The method of claim 1, wherein the slave controllers

Leak detection comprising an ultrasonic or infrared transmitting and receiving unit at a position facing the neighboring slave controller, and configured to transmit a sensing signal including its own ID to the master controller when an ultrasonic signal or infrared signal having its own ID is received. Device.
The master controller of the leak detection apparatus according to claim 1 is provided with a wireless communication module to wirelessly transmit a leak sensing signal transmitted from the slave controller to a remote integrated alarm module, and the integrated alarm module wirelessly receives the leak sensing signal. Receiving and transmitting to the local PC, wherein the local PC is configured to receive and store the leak sensing signal and to generate an alarm according to whether or not the leak has occurred, and the remote monitoring system using the leak detection device.