EP3112089A1 - Control device for a handheld machine tool - Google Patents

Abstract

The invention is based on an operating device for a handheld power tool (12a; 12b; 12c) with an operator interface (14a; 14b; 14c) which is provided to control at least one user input of at least one user for controlling the handheld power tool (12a; 12b; 12c ) capture. It is proposed that the operator interface (14a, 14b, 14c) is provided for detecting the at least one operator input without contact.

Description

State of the art

There are control devices for a hand tool machines are known, each having an operator interface, which is intended to detect at least one operating input of at least one user to control the power tool.

Disclosure of the invention

The invention is based on an operating device for a handheld power tool, with an operator interface, which is provided to detect at least one operating input of at least one user for controlling the handheld power tool.

It is proposed that the operator interface is provided to detect the at least one operator input without contact. By "provided" is intended to be understood in particular specially programmed, designed and / or equipped. The fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state. In this context, an "operator interface" is to be understood as meaning, in particular, an interface which enables an operator to interact with a handheld power tool. In particular, the operator interface has at least one input means for inputting control commands by means of operator inputs. Furthermore, the operator interface can have at least one output device, which is provided to at least one Information, for example, at least one information about an operating state of a power tool to output to an operator. The operating device has in particular a communication interface, which is intended to communicate, in particular wirelessly and / or by wire, with a control and / or regulating unit of a handheld power tool. A "control and / or regulating unit" should in particular be understood to mean a unit having at least one control electronics. By "control electronics" is meant in particular a unit with a processor unit and with a memory unit and with an operating program stored in the memory unit. By the fact that the user interface is provided to at least one operator input "contact-free to capture" should be understood in particular that a detection of an operator input without actuation, in particular without touching, a physical control element takes place. In particular, the operating device has an evaluation unit which is provided to evaluate operating inputs made via the user interface and / or to convert them into control commands for at least one hand-held power tool.

By such a configuration, a generic operating device can be provided with improved properties in terms of detection of operator inputs. In particular, an advantageously comfortable and / or secure handling of a handheld power tool can be achieved by the non-contact detection of operator inputs.

It is also proposed that the operator interface has at least one voice sensor, which is provided to detect at least one voice command of the operator. In this context, a "voice sensor" should be understood as meaning, in particular, a sensor which is provided to detect and / or evaluate at least one voice information. In particular, the speech sensor is designed as a throat microphone and / or an electromyography sensor and / or preferably as a microphone. A "microphone" is to be understood in particular a sound transducer, which is intended to convert an airborne sound as sound pressure oscillations in an electrical signal. A "throat microphone" should be understood in particular a sound transducer, which provided for this purpose is to convert a structure-borne noise as sound pressure oscillations into an electrical signal. An "electromyography sensor" is to be understood in particular as meaning a sensor which is intended to detect a contraction of articulation muscle, in particular by detecting electrical action potentials of the muscle cells. In this way, an advantageously simple and / or reliable detection of voice commands for controlling a handheld power tool can be achieved.

In particular, the at least one voice sensor can be arranged in and / or on a handheld power tool. Preferably, the at least one speech sensor can be arranged on the body of the operator. In particular, the at least one voice sensor can be arranged on a work clothing and / or protective clothing, for example on protective goggles, a protective helmet, a collar and / or a headset, an operator, in particular in the vicinity of the mouth. Alternatively or additionally, the at least one speech sensor can be arranged directly on the body, in particular in the face and / or in the region of the larynx of the operator. As a result, an advantageous detection quality can be achieved. In particular, a disturbing influence of ambient noise can be advantageously minimized.

In a preferred embodiment of the invention it is proposed that the operating device has at least one acoustic sensor which is provided to detect at least one ambient noise. An "acoustic sensor" should in particular be understood to mean a sound transducer which is intended to convert an airborne sound as sound pressure oscillations into an electrical signal. An "ambient noise" is to be understood in particular as meaning a noise generated by a handheld power tool itself and / or in a vicinity of the handheld power tool, in particular a working sound and / or speech noise. In particular, the at least one acoustic sensor is arranged directly on the handheld power tool and / or within the handheld power tool and / or in close proximity to the handheld power tool. As a result, advantageously a distinction between an input of voice commands and ambient noise can be made possible.

It is further proposed that the operating device has a filter unit which is provided to separate voice commands from ambient noise. A "filter unit" should in particular be understood to mean an electronic unit which is intended to change electrical and / or acoustic signals as a function of a frequency in amplitude and / or in phase position in order to attenuate and / or suppress unwanted signal components. By the fact that the filter unit is intended to "separate voice commands from ambient noise" should be understood in particular that the filter unit filters out a generated by ambient noise signal component from a voice commands and ambient noise comprehensive total signal. In particular, ambient noise can be detected by means of an acoustic sensor. Alternatively or additionally, in particular machine-specific ambient noise may be stored in a memory unit. This advantageously makes it possible to at least largely eliminate a disturbing influence of ambient noise on recognition of voice commands.

In a further preferred embodiment of the invention, it is proposed that the operator interface has a projector unit which is provided to project at least one virtual operating element and / or at least one virtual display element, for example for displaying operating parameters of a handheld power tool, on at least one projection surface. In this context, a "projector unit" should be understood as meaning, in particular, an optical unit which is provided to image a particularly two-dimensional image generated by means of at least one light source onto at least one projection surface. In particular, the at least one projector unit can be designed as an LCD projector, LED projector and / or preferably as a laser projector. The projector unit is in particular directly on and / or in a hand tool and / or on a work clothing and / or protective clothing, such as goggles or a protective helmet, an operator can be arranged. In particular, the at least one projection surface may be formed at least partially by a body surface of an operator, for example a palm and / or a forearm inner surface, a workpiece surface, a surface of a housing of a hand tool and / or another suitable surface in the immediate vicinity of a hand tool. Under a "virtual In this context, a non-physical element produced by means of projection onto a projection surface is to be understood in an advantageous manner, whereby an almost arbitrary number of, in particular, different operating elements and / or display elements can be provided, in particular a user interface and / or a display surface is merely advantageous limited by a size of an available projection screen.

Furthermore, it is proposed that the operator interface has at least one optical sensor which is provided to detect the operator input of the at least one virtual operating element. In this context, an "optical sensor" should be understood as meaning, in particular, a sensor which is provided to optically detect at least one object, in particular a position and / or a movement of at least one object. In particular, the at least one optical sensor is provided to detect a position and / or a movement of an object, for example a finger and / or a hand of an operator, relative to a virtual operating element. The optical sensor can in particular be designed as a monoscopic or stereoscopic camera and / or as an infrared camera. Preferably, the at least one optical sensor can be arranged on a working and / or protective clothing, for example on protective glasses and / or on a protective helmet, of the operator. This allows an advantageous detection of operator inputs via virtual controls.

In a further preferred embodiment of the invention, it is proposed that the operator interface has at least one camera which is provided to capture a facial expression and / or gesture of the operator. The at least one camera is provided in particular for detecting at least one body movement, in particular an eye and / or mouth movement, of an operator. The at least one camera can in particular be designed as a monoscopic or stereoscopic camera and / or as an infrared camera. Preferably, the at least one camera can be arranged on a working and / or protective clothing, for example on protective goggles and / or on a protective helmet, of the operator. This can be an advantageous Detection of executed by facial expressions and / or gestures operator inputs done.

In addition, a hand tool with at least one operating device according to the invention is proposed. A "hand tool" is to be understood in this context, in particular a machine tool, which can be transported by an operator transport machine. In particular, the handheld power tool has a mass which is smaller than 40 kg, preferably smaller than 10 kg and particularly preferably smaller than 5 kg. Particularly preferably, the hand tool has a mass which corresponds to a value from a value range of 2 kg to 13 kg. In particular, the portable power tool can be designed as a drill and / or chisel hammer, as a percussion drill, as a screwdriver, as a drill, as a gardening machine, as a planing machine, as a circular saw or the like. The operating device may in particular be at least partially or completely integrated into the handheld power tool. Alternatively, it is also conceivable that the operating device is designed as an attachable to the hand tool machine additional device. By means of the operating device according to the invention, contact-free detection of operator inputs for controlling the power tool can advantageously be made possible.

The operating device according to the invention and / or the hand tool according to the invention should / should not be limited to the application and embodiment described above. In particular, the diagnostic device according to the invention and / or the handheld power tool according to the invention can have a number deviating from a number of individual elements, components and units specified herein for fulfilling a mode of operation described herein. In addition, in the value ranges indicated in this disclosure, values lying within the stated limits are also to be disclosed as disclosed and used as desired.

drawing

Further advantages emerge from the following description of the drawing. In the drawing, three embodiments of the invention are shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Fig. 1

eine Handwerkzeugmaschine mit einer Bedienvorrichtung, welche eine Bedienschnittstelle mit einem Sprachsensor aufweist,

Fig. 2

eine Handwerkzeugmaschine mit einer alternativen Bedienvorrichtung, welche eine Bedienschnittstelle, welche eine Projektoreinheit und einen optischen Sensor aufweist,

Fig. 3

eine Handwerkzeugmaschine mit einer alternativen Bedienvorrichtung, welche eine Bedienschnittstelle, welche eine an der Handwerkzeugmaschine angeordnete Projektoreinheit aufweist und

Fig. 4

eine Bedienvorrichtung mit einer Kamera, welche dazu vorgesehen ist, eine Mimik und/oder Gestik eines Bedieners zu erfassen.

It shows:

Fig. 1

a hand tool with an operating device, which has a user interface with a voice sensor,

Fig. 2

a hand tool with an alternative operating device, which has a user interface, which has a projector unit and an optical sensor,

Fig. 3

a hand tool with an alternative operating device, which has a user interface, which has a arranged on the power tool projector unit and

Fig. 4

an operating device with a camera, which is intended to capture a facial expression and / or gesture of an operator.

Description of the embodiments

FIG. 1 shows a hand tool 12a with an operating device 10a. The hand tool 12a is exemplified as an angle grinder. Alternatively, however, a portable power tool may in particular also be designed as a drill and / or chisel hammer, as a percussion drill, as a screwdriver, as a drill, as a gardening machine, as a planing machine, as a circular saw or the like. The operating device 10a has an operator interface 14a. The user interface 14a is intended to provide user input for controlling the user To grasp hand tool 12a. The operator interface 14a is provided to detect the operator inputs contactless.

The operator interface 14a has a voice sensor 16a. The voice sensor 16a is provided to detect voice commands of the operator. The voice sensor 16a can be arranged on the body of the operator. In particular, the voice sensor 16a can be arranged on a working and / or protective clothing of an operator and / or directly on the body of the operator. The voice sensor 16a is formed as a microphone. Alternatively, a voice sensor may be designed in particular as a larynx microphone, a skullcap microphone and / or as an electromyography sensor. The voice sensor 16a is arranged, for example, in a headset 40a of an operator.

The operating device 10a further comprises an acoustic sensor 20a. The acoustic sensor 20a is provided to detect ambient noise. Furthermore, the operating device 10a comprises a filter unit 22a. The filter unit 22a is provided to separate voice commands from ambient noise. The filter unit 22a is supplied with both the signals of the voice sensor 16a and the signals of the acoustic sensor 20a. After the separation of voice commands from environmental sounds, the voice commands are supplied to a control unit 38a of the portable power tool 12a. The operating device 10a can be set user-specifically in particular by voice recognition. If the operating device 10a is set in a user-specific manner, operation of the handheld power tool 12a can only be carried out by the respective preset user.

In the FIGS. 2 to 4 two further embodiments of the invention are shown. The following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, with reference in principle to the same reference components, in particular with respect to components with the same reference numerals, to the drawings and / or the description of the other embodiments, in particular FIG. 1 , can be referenced. To distinguish the embodiments of the letter a is the reference numerals of the embodiment in the FIG. 1 readjusted. In the embodiments of the FIGS. 2 to 4 the letter a is replaced by the letters b and c.

FIG. 2 shows a hand tool 12b with an alternative embodiment of an operating device 10b. The operating device 10b has an operator interface 14b. The operator interface 14b is provided to detect operator inputs of a user for controlling the portable power tool 12b. The operator interface 14b is provided to detect the operator inputs contactless.

The operator interface 14b has a projector unit 24b. The projector unit 24b is provided to project virtual control elements 26b and / or virtual display elements 28b onto a projection surface 30b. The projection surface 30b is formed here by way of example by a palm of the operator. Alternatively, a projection of virtual control elements and / or virtual display elements on any surfaces, such as workpiece surfaces, take place. A projection of virtual display elements can alternatively be done in particular in and / or on a glass of protective goggles and / or a helmet visor. Furthermore, the operator interface 14b has an optical sensor 32b. The optical sensor 32b is provided to detect operator inputs of the virtual control elements 26b. In particular, the optical sensor 32b is provided to detect a position and / or a movement of a finger and / or a hand of the operator relative to the virtual operating elements 26b. Operator inputs of the virtual operating elements 26b detected by the optical sensor 32b are preferably transmitted wirelessly to a control unit 38b of the handheld power tool 12b. The optical sensor 32b can be arranged on a working and / or protective clothing of the operator. The projector unit 24b can be arranged on a work and / or protective clothing of the operator. The optical sensor 32b and the projector unit 24b are arranged, for example, on a safety goggle 42b of the operator. Alternatively or additionally, a projector unit 24b may also be arranged directly on the handheld power tool 12b (cf. Fig. 3 ). A projection by the projector unit 24b can, in particular, be arranged on a housing surface 44b, when arranged on the handheld power tool 12b, a surface of a protective cover 46b, a workpiece surface 48b and / or other suitable surface are made.

FIG. 3 shows a further alternative embodiment of an operating device 10c. The operating device 10c has an operator interface 14c. The operator interface 14c is provided to detect operator inputs of a user for controlling a handheld power tool 12c, not shown here. The operator interface 14c is provided to detect the operator inputs contactless.

The operator interface 14c has a camera 36c. The camera 36c is intended to capture a facial expression and / or gesture of the operator. The camera 36c can be arranged on a work and / or protective clothing of the operator. The camera 36c is attached by way of example to a protective helmet 50c of the operator. Alternatively, a camera can be arranged in particular in protective goggles of an operator. The camera 36c points toward the face of the operator. In particular, the camera 36c is provided to detect an eye activity of the operator. As a result, in particular a fatigue and / or a decrease in the attention of the operator during a work process can be registered and, for example, a safety shutdown of a handheld power tool 12c can be initiated.

Claims (11)

Operating device for a handheld power tool (12a, 12b, 12c), with an operator interface (14a, 14b, 14c), which is provided to detect at least one operating input of at least one user for controlling the power tool (12a, 12b, 12c), characterized in that the operator interface (14a; 14b; 14c) is provided for detecting the at least one operator input without contact. Operating device according to claim 1, characterized in that the user interface (14a) at least one voice sensor (16a), which is intended to detect at least one voice command of the operator. Operating device according to claim 2, characterized in that the at least one voice sensor (16a) can be arranged on the body of the operator. Operating device according to one of the preceding claims, characterized by at least one acoustic sensor (20a) which is provided to detect at least one ambient noise. Operating device according to one of the preceding claims, characterized by a filter unit (22a) which is provided to separate voice commands from ambient noise. Operating device according to one of the preceding claims, characterized in that the user interface (14b) has a projector unit (24b), which is provided, at least one virtual operating element (26b) and / or at least one virtual display element (28b) on at least one projection surface ( 30b). Operating device according to claim 6, characterized in that the user interface (14b) has at least one optical sensor (32b) which is provided to detect the operator input of the at least one virtual operating element (26b). Operating device according to claim 7, characterized in that the at least one optical sensor (32b) can be arranged on a working and / or protective clothing of the operator. Operating device according to one of the preceding claims, characterized in that the operator interface (14c) has at least one camera (36c) which is provided to detect a facial expression and / or gesture of the operator. Operator device according to claim 9, characterized in that the at least one camera (36c) can be arranged on a working and / or protective clothing of the operator. Powered hand tool with at least one operating device (10a, 10b, 10c) according to one of claims 1 to 10.

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