DE102018206571A1 - sensor module - Google Patents

Abstract

The invention relates to a sensor module (18) of an adjustment part (8) of a motor vehicle (2), in particular an electromotive door adjustment (6), comprising a sensor (20) and a control unit (22), and a first operating mode (37) and a second operating mode (32), in the first operating mode (37) is monitoring for a collision of the adjusting part (8) with an obstacle (4) and in the second operating mode (32) monitoring a gesture (36) of a user (30) active. The invention further relates to an electromotive adjusting drive (6) of a motor vehicle (2), a motor vehicle (2) and a use of a sensor module (18).

Description

The invention relates to a sensor module of an adjustment of a motor vehicle and an electric motor adjustment of a motor vehicle and a motor vehicle with an electric motor adjustment. The electromotive adjusting drive is preferably an electromotive door adjustment. The invention further relates to the use of a sensor module of a motor vehicle.

Motor vehicles have to increase comfort electromotive adjusting drives. In this case, an adjustment part, such as a tailgate or a side door, is opened or closed by means of an electric motor to a command of the user. The transmission of the command, for example, by means of a button which is arranged in a passenger compartment of the motor vehicle. Also so-called remote key are equipped by means of such a button. In response to an actuation of the button, an electric motor of the door adjustment is activated and thus pivoted the door. This always requires manual operation of the button.

If the user wears an item, pressing the button is not possible. In order nevertheless to activate the electromotive door adjustment, it is known to detect a specific movement of the user by means of a sensor of the motor vehicle. Thus, in particular in a rear region of the motor vehicle, a capacitive sensor is arranged. By means of this, a gesture of the user, such as a swing of a foot in a predetermined pattern, is detected.

When pivoting the tailgate, it is possible that an obstacle is in the adjustment. If the user does not completely oversee the adjustment range and activates the adjustment drive, or if an obstacle is moved into the adjustment range, the adjustment moves against the obstacle. In this case, it is possible that the adjustment part and / or the obstacle are damaged. To avoid this, distance sensors are usually used. These operate, for example, according to the capacitive principle, and the distance sensor thus has electrodes, by means of which an electromagnetic field is created. If an object is in the vicinity of the electrodes, the electromagnetic field is disturbed, and thus the capacitance of the capacitor formed by means of the electrodes of the distance sensor is changed. By evaluating this, it is possible to detect the obstacle.

An alternative to this is the use of optical sensors as distance sensors. These have an image sensor, by means of which the environment of the adjustment is detected. The image sensor is, for example, a component of a camera, by means of which an image is created to capture the environment. The image sensor has a number of detector elements arranged in a certain pattern relative to each other, and each detector element has a detection angle range. Based on the light detected in the respective detection angle ranges, the image is assembled so that a rasterized image is created by means of the image sensor.

The invention has for its object to provide a particularly suitable sensor module of an adjustment of a motor vehicle and a particularly suitable electric motor adjustment of a motor vehicle from a particularly suitable motor vehicle with an electric motor adjustment and a particularly suitable use of a sensor module for collision avoidance in an adjustment of an adjustment of a motor vehicle , wherein advantageously manufacturing costs and / or assembly time are reduced.

With regard to the sensor module, this object is achieved by the features of claim 1, in terms of the electric motor adjustment by the features of claim 8, in terms of the motor vehicle by the features of claim 9 and in terms of use by the features of claim 10 according to the invention. Advantageous developments and refinements are the subject of the respective subclaims.

The sensor module is a component of a motor vehicle and is preferably connected in the assembled state to an adjustment part. The adjusting part is adjustable and preferably suitably guided, for example by means of a bearing, hinge or guide rails. Conveniently, the adjusting part is a component of an electromotive adjusting drive and suitably driven by means of an electric motor, for example by means of a worm gear and / or a spindle. The electric motor is in particular a brushed commutator motor or, alternatively, designed brushless. Conveniently, the electric motor is a brushless DC motor (BLDC). For example, the electric motor is an asynchronous motor or a synchronous motor.

The electromotive adjustment is also a part of the motor vehicle and, for example, an electromotive seat adjustment, an electric motor operated side window or an electric motor operated sunroof. In this case, the adjustment is a seat, a part of a seat, a window or a sunroof. For example, the electric motor adjustment is part of a vehicle seat and serves in particular the adjustment of the seat or a part of the seat, such as a backrest or a headrest. In particular, the adjustment part is a convertible top of a convertible or a sliding roof. Alternatively, the electric motor adjustment is an electric motor operated hood. The electromotive adjustment is, for example, a locking system of the motor vehicle, which is suitable for locking and unlocking a (vehicle) door. Preferably, the electromotive adjustment is associated with a locking system for locking and unlocking a (vehicle) door. The adjustment is here, for example, a lock cylinder or a pawl. If the electromotive adjusting drive is a locking system, the electric motor is in particular a linear motor or another linear drive, for example an electromagnet, by means of which a linear movement of the possible locking cylinder or the pawl is caused.

Particularly preferably, the electromotive adjustment is an electric motorized door adjustment, wherein the door is for example a side door, which is in particular pivoted or moved. Alternatively, the door is a tailgate. In particular, the door closes an opening of the motor vehicle. In this case, the door is preferably moved from an open to a closed position or vice versa during operation by means of the electric motor. Thus, the adjustment is a door and a part of an electric motorized door adjustment.

The sensor module has a sensor and a control unit. In particular, the control unit is signal-wise coupled to the sensor and serves in operation of the evaluation of signals provided by the sensor, in particular electrical signals. In particular, the sensor itself does not include its own electronics or electronic components. For example, the control unit is used for the operation of the sensor and preferably the control and / or regulation of the sensor. In this case, the sensor is charged during operation, for example by means of the control unit with signals and signals received by the sensor are evaluated by means of the control unit. The control unit is thus in particular signal-technically and / or electrically coupled to the sensor.

The sensor module also has a first operating mode and a second operating mode. For this purpose, in particular, the control unit is switched between the two operating modes. In other words, the two operating modes are realized by means of the control unit. In the first operating mode, monitoring is carried out for a collision of the adjusting part with an obstacle. For this purpose, the sensor is operated properly. In other words, a distance sensor is provided by means of the sensor module, by means of which it is monitored whether a collision of the adjustment part with the obstacle takes place or can take place. For this purpose, in particular an adjustment, along which the adjustment is spent during operation, monitored, in particular a leading the adjustment part level, which is expediently perpendicular to the adjustment. In the second mode of operation, monitoring is active on a gesture of a user. In other words, a gesture is detected by means of the sensor module, and preferably a user input is detected by means of the sensor module. Here, the sensor module serves as an input device, by means of which a user input is detected. Thus, the sensor module takes two functions. As a result, only a single sensor module is required, so that an assembly time on the motor vehicle is shortened. Also, only a single sensor module for performing the two functions is required, so that manufacturing costs of the motor vehicle are lowered. Furthermore, a weight is reduced, and it is relatively little space to provide the two functions required.

The sensor module has, for example, a plurality of sensors. However, particularly preferably, the sensor module comprises only a single sensor, which further reduces manufacturing costs. In particular, the sensor module is provided as a single structural unit and expediently has a housing within which all further components of the sensor module, in particular the sensor and the control unit, are arranged. In an alternative to this, the sensor module comprises no housing but merely a printed circuit board to which the individual components, in particular the sensor and the control unit, are connected. In this way, costs and space are further reduced. Expediently, the sensor module is signal-technically connected in the assembled state to a bus system of the motor vehicle, in particular a CAN bus system or a Lin bus system. For this purpose, the sensor module expediently a suitable connection, in particular a plug, and works expediently at least partially according to the bus standard. Suitably, the sensor module is connected in the assembled state to an electrical system of the motor vehicle, which carries an electrical voltage of 12 V, 24 V or 48 V. For this purpose, the sensor module in particular has a suitable interface and is expediently operated with this electrical voltage.

Appropriately, in the first operating mode, when the obstacle is detected, a signal is generated and, for example, output, in particular fed into the bus system, if this is present. Based on the signal expediently the adjustment is stopped or reversed. Preferably, a distance to the Obstacle by means of the adjustment in response to the signal increases or at least excluded a touch of the adjustment with the obstacle substantially. Conveniently, the electric motor is suitably activated. If the user's gesture is detected, another signal is preferably output and preferably fed to the bus system. The further signal corresponds, for example, to a request to perform a specific function, for example to activate the electric motor. Thus, when detected gesture, the adjustment is pivoted. For example, the gesture is hand movement of the user, in particular a wiping movement, or a foot movement.

For example, the second operating mode is continuously active, in particular as long as the sensor module is energized. Conveniently, however, the second operating mode is only active when the adjustment is stopped. Thus, only if no adjustment of the adjustment takes place, monitored on the gesture of the user. As a result, it is possible to operate the sensor substantially completely for monitoring the collision of the adjustment member with the obstacle, so that safety is increased. Conveniently, the first operating mode is at least active when the adjustment is moved.

Alternatively or particularly preferably in combination with this, the second operating mode is only active when an external signal is provided. The external signal is preferably provided by means of the possible bus system or is transmitted via this. Conveniently, the external signal is a positive key recognition. In other words, when a key of the motor vehicle is detected, the second operating mode is activated. The key recognition is preferably contactless. In other words, the key of the motor vehicle is first detected without contact during operation of the motor vehicle and this signal is passed to the sensor module. Following this, the second operating mode is activated. Thus, it is first identified whether the user is authorized to execute the gesture, which in particular leads to an execution of a function of the motor vehicle. Since the second operating mode is inactive as long as no positive key recognition has occurred, a required energy for the operation of the sensor module is reduced.

For example, the first operating mode and the second operating mode are at least temporarily active in parallel. Particularly preferably, however, the first operating mode and the second operating mode are alternately active, wherein expediently also a further period of time is present, within which neither the first nor the second operating mode is active. During the further time period, preferably no external signal is present or provided. Due to the variety of operating modes, a comparatively secure monitoring of the gesture or the obstacle is possible by means of the sensor, which increases safety and comfort. Conveniently, the first operating mode is only active when the adjustment is moved, so in particular when the electric motor, if it is present, is energized.

The sensor is in particular a non-contact sensor. For example, the sensor is a capacitive sensor and thus has an electrode. The electrode is preferably energized by means of the control unit and / or monitors its electrical potential difference. In an alternative to this, the sensor is a radar sensor or ultrasonic sensor. For this purpose, the sensor expediently has a suitable receiving and / or transmitting structure. Suitably, the sensor is an optical time-of-flight sensor. Particularly preferably, the sensor is a LIDAR sensor, which is operated, for example, based on the evaluation of an optical runtime. The sensor thus has in particular a laser and a photodiode. In this case, laser light, in particular pulsed, is emitted. By means of the photodiode a reflected and / or scattered portion of the light is detected. In this case, the light is reflected and / or scattered in particular at the user, in particular a user's hand, or the obstacle. On the basis of the transit time difference in particular the distance of the obstacle or the user and expediently the changing distance, including the gestures detected. In other words, the sensor is a TOF sensor. Expediently, the determination of the distance thus takes place on the basis of the Doppler effect. Alternatively or in combination, the distance is determined by means of a wavelength shift. Expediently, light is emitted in the infrared range by means of the sensor, that is to say in particular with a wavelength greater than 800 nm, 900 nm or 1000 nm. Thus, the light can not be perceived by means of the human eye, which improves an optical impression. As an alternative to photodiodes, for example, a photosensor is used, which operates in particular according to the CMOS or CCD principle.

In a further alternative, light is emitted into the environment by means of the sensor, which is, for example, in the infrared range. The scattered and / or reflected light is detected by means of a photosensor of the sensor, in particular a chip. In a further alternative, only the photosensor is present, with a comparatively poor illumination, in particular additionally an illumination of the surroundings of the motor vehicle he follows. In this case, an image is in particular created by means of the photo sensor, and on the basis of which the obstacle or the gesture is detected. In other words, the sensor is a camera or a component of a camera.

For example, the detection of the gesture takes place without contact. However, particularly preferably, the sensor module has an operating element for touching with the user's hand. For this purpose, the operating element is suitable, in particular provided and furnished. By means of the sensor, the operating element is monitored for the gesture. The gesture here is a touch of the operating element or at least part of the operating element by hand. Because of the control, the user can see how and where the gesture should be performed so that it is safely recognized. For example, the operating element has a corresponding mark.

Particularly preferably, the operating element has a transparent pane. The disk is preferably transparent in certain areas, for example completely transparent or partially transparent. In particular, the disc is transparent in only one direction. Conveniently, the sensor is connected to the transparent pane or at least arranged behind it.

Thus, the gesture is detected through the transparent pane. The disc protects the sensor from damage.

The transparent pane is transparent, for example, in the visible or particularly preferably in the infrared region. In this way, a comparatively secure detection of the hand and thus the gesture is possible. In particular, the transparent pane here has markings, for example an arrow or a plurality of markings, which is designed, for example, in the manner of a number pad (number pads). In this case, each mark is assigned a specific function, and by means of the sensor is monitored whether the respective mark is touched.

Particularly preferably, the sensor module also comprises a projector which is coupled to the transparent pane. The projector is preferably arranged next to the sensor. By means of the projector, in particular the transparent pane is irradiated, for example if the external signal is provided. Preferably, the marker, if present, is illuminated or generated by means of the projector. The projector itself has, for example, a light source, in particular an LED. Preferably, the projector comprises a template and / or mask, by means of which preferably the respective marking is provided. In particular, in operation by means of the projector, the marking is projected onto the transparent pane, and by means of the sensor it is monitored whether the projection, that is to say the marking, is touched. If this happens, the gesture is recognized. Preferably, the sensor module is operated accordingly. However, at least the control unit is suitable for this purpose, in particular provided and set up. The projector and / or the sensor are expediently arranged on a common side of the transparent pane, the opposite side of the transparent pane being intended for contact with the hand.

The invention further relates to an electromotive adjusting drive. The electromotive adjusting drive is a component of a motor vehicle and comprises an adjusting part driven by means of an electric motor. The adjustment is, for example, a side window, a sunroof, a hood, a seat or a part of a seat. The adjustment part is preferably a door, and the electromotive adjustment drive is an (electromotive) door adjustment. The door is for example a side door, which is in particular a hinged door or a sliding door. Alternatively, the door is a tailgate. The electric motor is, for example, a brushed commutator motor. Conveniently, the electric motor is a brushless electric motor, in particular a DC motor. Preferably, the electric motor is a brushless DC motor (BLDC) and / or a synchronous motor. The adjustment is mechanically coupled to the electric motor, for example by means of a transmission, such as a worm gear. Alternatively or in combination with this, a spindle or a cable is mechanically arranged between the electric motor and the adjusting part.

Furthermore, the electromotive adjustment drive comprises a sensor module comprising a sensor and a control unit, and having a first operating mode and a second operating mode. In the first operating mode, monitoring for a collision of the adjusting part with an obstacle and, in the second operating mode, monitoring for a gesture of a user is active. Thus, the sensor module serves both to monitor for a collision and to monitor for a gesture and consequently takes two different functions. In this case, the sensor module preferably has only the one single sensor.

The motor vehicle has an electromotive adjusting drive with an adjusting part driven by means of an electric motor. The adjustment is in this case a tailgate and hinged to a body of the motor vehicle, in particular by means of a hinge, which expediently a swing hinge is. Furthermore, the electromotive adjusting drive comprises a sensor module comprising a sensor and a control unit. The sensor module has a first operating mode and a second operating mode, wherein in the first operating mode, monitoring for a collision of the adjusting part with an obstacle, in particular during a movement of the adjusting part, and in the second operating mode monitoring on a gesture of the user is active.

The tailgate preferably has a license plate illumination. By means of the license plate illumination takes place during operation lighting a license plate, which is connected to the tailgate or at least attachable. The sensor is arranged in an alternative in the license plate illumination, in particular on or in a drip edge or a receiving area for a light source. In this case, the sensor is, for example, spaced from the control unit. In this way, comparatively little space is additionally required, and the tailgate can be configured comparatively continuous, so that penetration of water can be relatively effectively avoided. Also, due to such positioning a comparatively safe monitoring of an obstacle in the adjustment of the tailgate and the gesture of the user allows.

In one alternative, the tailgate has a stop lamp. The sensor is expediently arranged inside the brake light, for example in a region covered and / or transparent by means of a plastic. For example, the brake light is arranged in a hinge region and is preferably also pivoted upon pivoting of the tailgate. Alternatively, the brake light is fixed on the body side. In a further alternative, the brake light is connected, for example, to a spoiler of the tailgate. In a further alternative, the sensor, preferably the complete sensor module, is connected to the spoiler independently of the brake light.

In a further alternative, the tailgate on a rear window, which is assigned for example a windshield wiper. The sensor, particularly preferably the complete sensor module, is arranged in a drying space below the rear window in a further alternative. Suitably, the rear window is provided by means of a plastic compartment for providing the drying space, wherein the plastic compartment is connected to the inside of the rear window, in particular fastened. Preferably, the rear window is provided in this area with a coating that is not transparent, for example, in the visible range. The coating is expediently transparent in the infrared range. Due to the arrangement in the drying room, a comparatively efficient monitoring of the surroundings of the motor vehicle by means of the sensor module is made possible. Also, due to the rear window a comparatively smooth and clean surface is present, so that monitoring is simplified. Due to the coating, in particular an optical impression for a user is improved.

A sensor module for collision avoidance during an adjustment of an adjustment part of a motor vehicle is used in addition to detecting user inputs. Thus, the sensor module is a distance sensor or at least forms the function of a distance sensor. The distance sensor is used during operation of the monitoring of an adjustment, in particular a pivoting range of a door, such as a side door or tailgate. In this case, for example, monitored by means of the sensor module during operation, whether a side door is pivoted against a curb or the like. In addition, the sensor module is used for detecting user inputs, for which purpose, in particular, monitoring of a gesture of the user takes place. Due to the two functions, only a single sensor module is required, which reduces manufacturing costs of the motor vehicle and a required assembly time. In addition, a weight and cost are reduced.

The refinements and advantages embodied in connection with the sensor module are analogously also to be applied to the electromotive adjusting drive / the motor vehicle / the use and vice versa.

• 1 - 3 schematisch den Betrieb eines Sensormoduls einer Heckklappe eines Kraftfahrzeugs,
• 4 die Heckklappe in einer Draufsicht,
• 5 die Heckklappe in einer Seitenansicht,
• 6 schematisch das Sensormodul in einer Seitenansicht,
• 7, 8 zwei unterschiedliche Ausgestaltungsformen des Bedienelements, und
• 9, 10 gemäß 5 abweichende Anordnungspositionen des Sensormoduls.

Embodiments of the invention will be explained in more detail with reference to a drawing. Show:

• 1 - 3 1 schematically shows the operation of a sensor module of a tailgate of a motor vehicle,
• 4 the tailgate in a plan view,
• 5 the tailgate in a side view,
• 6 schematically the sensor module in a side view,
• 7 . 8th two different embodiments of the control element, and
• 9 . 10 according to 5 deviating arrangement positions of the sensor module.

Corresponding parts are provided in all figures with the same reference numerals.

In 1 schematically simplified is a motor vehicle 2 shown under a comparatively low ceiling 4 is turned off. The car 2 has in the rear area an electric motor adjustment 6 in the form of an electromotive door adjustment, with an adjustment 8th on, by means of an electric motor 10 is driven. The electric motor 10 is a brushless DC motor and on a body 12 of the motor vehicle 2 attached. The electric motor 10 is by means of a variable-length component 14 , which includes a spindle, with the adjustment 8th operatively connected. The adjustment part 8th is a tailgate, which by means of a hinge 16 at the body 12 is articulated. By means of the extension of the variable-length component 14 becomes the position of the adjustment part 8th concerning the body 12 predetermined, wherein the variable-length component 14 by means of the electric motor 10 driven and thus its length is set. In other words, the adjustment is 8th by means of the electric motor 10 around the hinge 16 pivoted so that the trunk of the motor vehicle 2 is open or closed.

The adjustment part 8th has a sensor module 18 on, in one of the hinge 16 spaced area is arranged. The sensor module 18 includes a sensor 20 and a control unit 22 by means of which the sensor 20 controlled and by means of the sensor 20 created electrical signals are evaluated. The sensor 20 is a LIDAR sensor and thus has a laser or an LED. Also, the sensor points 20 a not shown photo sensor. During operation, light is emitted in the infrared range by means of the laser and the reflected and / or scattered component is detected by means of the photosensor. By means of the control unit 22 In this case the laser is controlled and the photosensor is read out. Based on the time difference between the emission and the reception of the light, the distance of the light scattering / reflecting object is determined.

The car 2 also includes a key recognition 24 by means of a bus system 26 , which is a Can-Bus system, with the electric motorized door adjustment 6 is technically connected. If by means of key recognition 24 contactless a key 28 is recognized, a user 30 carries with it, becomes an external signal 31 provided in the bus system 26 fed and for electromotive door adjustment 6 is directed.

As a result, becomes a second mode of operation 32 of the sensor module 18 started in 2 is shown. This is done by means of the sensor module 18 monitors whether a hand 34 the user 30 into a surveillance area 33 enters and on the tailgate 8th in the area of the sensor module 18 is hung up. The surveillance area 33 is based on the structural conditions of the sensor module 18 specified. A touch or at least the comparatively close approach of the hand 34 to the sensor module 18 in particular, a distance of only less than 1 cm is present as a gesture 36 used by the user. After the gesture 36 has been detected as a user input, the corresponding information is further processed, in particular by means of a control device of the electromotive door adjustment 6 , which is not shown in detail, and by means of which the electric motor 10 is controlled. This is the electric motor 10 driven so that the tailgate 8th around the hinge 16 is pivoted.

The sensor module 18 then goes into a first mode of operation 37 offset in 3 is shown. It is monitored whether the adjustment 8th against an obstacle, namely the ceiling present in this example 4 , is spent. When pivoting, this is the surveillance area 33 with the sensor module 18 towards the ceiling 4 pivoted. At an approximation of the adjustment 8th to the ceiling 4 , which is less than 10 cm, is a corresponding signal to the controller or at least the electric motor 10 given so that it is shut down.

During the first operating mode 37 is active, is the second operating mode 32 not active, so the two operating modes 32 . 37 alternately active. In addition, the second operating mode 32 only active when the adjustment 8th is set still, so the electric motor 10 not operated. As soon as the adjustment part 8th is moved, is the second operating mode 32 not active, and the first operating mode 37 is active. In addition, the second operating mode is only active when the external signal 31 is provided so that comparatively little electrical energy to operate the sensor module 18 is needed. Thus, the sensor module 18 both for collision avoidance during an adjustment of the adjustment 8th as well as for recognizing user input, namely the gesture 36 , used.

In 4 is the tailgate 8th in a plan view and in 5 shown in a page presentation. The tailgate 8th has a body part in the lower portion in the vertical direction 38 with a license plate holder 40 on, by means of which a license plate 42 is included. In addition, the license plate holder includes 40 a license plate illumination 44 with a bulb 46 at a drip edge 48 tied down in the vertical direction. By means of the light source 46 If activated, the number plate lights up 42 ,

In addition, the tailgate 8th a rear window 50 on, which is made of a transparent material, such as glass. In the rear window 50 is a window wiper 52 integrated, by means of which when operating the rear window 50 from rain or dirt can be freed. At the upper end of the rear window in the vertical direction 50 is at this a brake light 54 attached on the outside, which includes a non-illustrated illuminant and a transparent cover.

Below the rear windows 50 is by means of a plastic compartment 56 at the rear window 50 attached, a drying room 58 realized. Here is the drying room 58 one-sided by means of the rear window 50 limited, in this area a coating 60 for visible light only from the drying room 58 to the outside of the motor vehicle 2 is transparent. Inside the drying room 58 is the sensor module 18 arranged, depending on the arrangement, different monitoring areas 33 are provided. Alternatively, the monitoring areas 33 depending on the operating mode 32 . 37 tilted to each other.

In 6 is the sensor module 18 shown schematically simplified in a side view. The sensor module 18 has the sensor 20 on that on a control 62 connected in the form of a transparent disc. The transparent pane 62 is designed as Plexiglas disk or by means of the rear window 50 educated. Further, on the transparent pane 62 a projector 64 on the same side as the sensor 20 arranged and visually coupled with this. The projector 64 has a light source 66 in the form of an LED and a mask 68 on that between the bulb 64 and the transparent pane 62 is arranged. In addition, the sensor module has 18 the control unit 22 on, with the sensor 20 as well as the projector 64 between the control unit 22 and the disc 20 are arranged. In this way, a comparatively compact sensor module 18 provided.

By means of the mask 68 becomes during operation of the project 64 one in 7 Mark shown 70 on the transparent pane 62 projected. This is done by means of the sensor 20 monitors whether the user 30 his hand 34 on the mark 70 sets. Due to the marking 70 is for the user 30 see where this his hand 34 to carry out the gesture 36 to position. In other words, the operating element 20 to touch by hand 34 designed and by means of the sensor 20 on the gesture 36 supervised.

In 8th is an alternative embodiment of the sensor module 18 shown, wherein by means of the mask 68 a mark 70 in the form of a numeric keypad on the control element 62 is projected. This is done by means of the sensor 20 monitors which of the digits by hand 34 be touched. Thus, it is possible by means of the sensor module 18 an input of a certain code as a gesture 36 capture. In particular, the code is the access authorization for the motor vehicle 2 used.

In 9 is another alternative arrangement of the sensor 20 shown. This is in the brake light 54 arranged. For example, only the sensor 20 or the complete sensor module 18 in the brake light 54 arranged. Thus, a realization of a comparatively large surveillance area 33 allowing, however, due to the shape of the body 12 of the motor vehicle 2 a restriction can be given.

In 10 is another arrangement of the sensor 20 shown. This is at the drip edge 48 and thus in the license plate illumination 44 arranged. Depending on the positioning, there is a setting for the respective monitoring area 33 possible, for example, on a foot movement or a hand movement of the user 30 as a gesture 36 is monitored.

In summary, the sensor module 18 as a collision protection sensor and additionally as an operating device for detecting the gesture 36 used, this expediently only during the standstill of the adjustment 8th he follows.

In particular, the sensor 20 designed as an infrared LIDAR sensor and preferably in the vicinity of the window wiper 52 arranged, especially in the drying room 58 under the rear window 50 under glass. The rear window 50 is expediently blackened in the visible spectrum in this area, but transparent to infrared light. In addition, the rear window 50 in this area by means of the window wiper 52 wiped and therefore the sensor 20 protected against contamination. Alternatively, the sensor 20 reset in the interior trim in the windscreen wiper area. The sensor 20 is for example either perpendicular to the rear window 50 or obliquely arranged to this, so the detection area 33 is enlarged. Thus, given a better operability, and the projecting of the marks 70 is improved.

In particular, the gesture 36 in this case a swipe gesture or an approach gesture or an operation of the numeric keypad, preferably for code input. This is expediently carried out when the motor vehicle 2 for multiple users 30 ready, for example in a so-called CarSharing. Also, such an embodiment of the motor vehicle 2 without key recognition 24 possible. The mark 70 For example, an arrow, a line, an area, a grid, or buttons. In particular, the mark is 70 in the coating 60 incorporated, for example, transparent or illuminated, in particular by means of projector 64 , In this case, for example, the mask 68 a component of the coating 60 ,

In another alternative, the sensor 20 in the area of license plate illumination 44 arranged, the surveillance area 33 for example, is directed downward in the vertical direction, so that a foot gesture can be detected comparatively secure. In an alternative to this is the transition region 33 aligned substantially horizontally, allowing an approach of the user 30 as a gesture 36 , for example, the hand 34 or the whole user 30 as a gesture 36 is recognized. In another alternative, the sensor 20 in the hinge area 16 or the brake light 54 , For example, in the area of a spoiler, not shown arranged. Here is the surveillance area 33 especially aimed at a floor, and as a gesture 36 For example, the presence of a foot, a leg or the execution of a foot gesture of the user 30 used. Alternatively, the approach of the user 30 as a gesture 36 used.

When using key recognition 24 in particular, the sensor module 18 only activated when the user 30 near the motor vehicle 2 by means of the key 28 has already been identified. Thus, an energy requirement is lowered. In particular, the second operating mode is alternatively used 32 cyclically, for example every 10 seconds, every 20 seconds, every minute or every 5 seconds. The larger the surveillance area 33 is, the greater is preferably the time interval between the individual activations of the second operating mode 32 , Thus, expediently, only a single measuring point and activation of the complete measurements are realized upon detection of an approximation. Once the gesture 36 is detected, is conveniently in the first mode of operation 37 changed, or on another gesture 36 supervised. This is especially as a gesture 36 the approach of the user 30 and as another gesture 36 the touch of the control element 62 used.

The invention is not limited to the embodiments described above. Rather, other variants of the invention can be derived therefrom by the person skilled in the art without departing from the subject matter of the invention. In particular, all the individual features described in connection with the individual embodiments are also combinable with one another in other ways, without departing from the subject matter of the invention

LIST OF REFERENCE NUMBERS

2

motor vehicle

4

blanket

6

Electromotive door adjustment

8th

adjusting part

10

electric motor

12

body

14

variable-length component

16

hinge

18

sensor module

20

sensor

22

control unit

24

key recognition

26

Bus system

28

key

30

user

31

external signal

32

second operating mode

33

monitoring area

34

hand

36

gesture

37

first operating mode

38

body part

40

License plate recording

42

license plate

44

License plate light

46

Lamp

48

drip

50

rear window

52

window Washer

54

Stoplight

56

Plastics trade

58

drying room

60

coating

62

operating element

64

projector

66

Lamp

68

mask

70

mark

Claims (10)

Sensor module (18) of an adjustment part (8) of a motor vehicle (2), in particular an electromotive door adjustment (6) comprising a sensor (20) and a control unit (22), and a first operating mode (37) and a second operating mode ( 32), wherein in the first operating mode (37) monitoring for a collision of the adjusting part (8) with an obstacle (4) and in the second operating mode (32) monitoring on a gesture (36) of a user (30) active is. Sensor module (18) after Claim 1 , characterized in that the second operating mode (32) is only active when the adjusting part (8) is set still. Sensor module (18) after Claim 1 or 2 , characterized in that the second operating mode (32) is only active when an external signal (31) is provided, in particular a positive key recognition. Sensor module (18) according to one of Claims 1 to 3 , characterized in that the first operating mode (37) and the second operating mode (32) are alternately active. Sensor module (18) according to one of Claims 1 to 4 , characterized in that the sensor (20) is a LIDAR sensor. Sensor module (18) according to one of Claims 1 to 5 characterized by an operating element (62) for contacting with a hand (34) which is monitored by the sensor (20) for the gesture (36). Sensor module (18) after Claim 6 , characterized in that the operating element (62) comprises a transparent pane, with which a projector (64) is coupled, and to which the sensor (20) is connected in particular. Electromotive adjusting drive (6) of a motor vehicle (2), in particular an electromotive door adjustment, with an adjusting part driven by an electric motor (8), and with a sensor module (18) according to one of Claims 1 to 7 , Motor vehicle (2) with an electromotive adjusting drive (6) according to Claim 8 wherein the adjustment part (8) is a tailgate hinged to a body (2), and wherein the sensor (20) is provided in a license plate illumination (44), in a stop lamp (54) or in a drying space (58) below a rear window (50 ) is arranged. Use of a sensor module (18) for collision avoidance during an adjustment of an adjustment part (8) of a motor vehicle (2) and in addition to the detection of user inputs (36).

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