EP2384294A1

EP2384294A1 - Device for actuating a moving part of a vehicle without contact

Info

Publication number: EP2384294A1
Application number: EP09798947A
Authority: EP
Inventors: Peter Van Gastel
Original assignee: Huf Huelsbeck and Fuerst GmbH and Co KG
Current assignee: Huf Huelsbeck and Fuerst GmbH and Co KG
Priority date: 2008-12-30
Filing date: 2009-12-30
Publication date: 2011-11-09
Anticipated expiration: 2029-12-30
Also published as: CN102271975B; DE102008063366A1; US9587417B2; US20110276234A1; WO2010076332A1; EP2384294B1; DE102008063366B4; CN102271975A

Abstract

The present invention relates to a device for actuating a moving part (10) of a vehicle (1), particularly a trunk lid (10.1), a side door (10.2), or the like, without contact, comprising a first detection means (11) for detecting an object in a first detection area (11a) and a second detection means (12) for detecting an object in a second detection area (12a) so that the actuation of the moving part (10) can be activated through the detection means (11, 12). According to the invention, the first detection means (11) is designed as a first capacitance sensor (11), and the second detection means (12) is designed as a second capacitance sensor (12), wherein means (13, 14) are provided, with which the detection areas (11a, 12a) can be specified in areas separated from each other.

Description

Device for contactless operation of a mobile

Part of a vehicle

Description

The present invention relates to a device for the contactless actuation of a movable part of a vehicle, in particular a tailgate, a side door or the like, with a first detection means for detecting an object in a first detection area and a second detection means for detecting an object in a second detection area the actuation of the movable part can be activated via the detection means.

For example, the non-contact operation of a tailgate can be used meaningfully when a person carries objects with both hands and a manual operation of the tailgate not or only difficult is possible. The object detected by the detection means may be a person approaching the vehicle with the intention of operating the tailgate or a side door or the like. The operation of the tailgate, the side door or the like describes both an opening operation, for example, when the person wants to insert an object ambidextrous in the trunk or interior or the operation concerns a closing operation when the person has taken an object from both the trunk or the interior with both hands ,

From EP 1 902 912 A1 a generic device for contactless actuation of a tailgate of a vehicle is known. Herein a detection means in the form of a sensor arrangement is proposed, with which parts of the exterior of the vehicle is monitored for the presence of a body part of a person or an object. The sensor device is mounted and aligned so that a part of a leg or a foot of the person standing next to the vehicle can be detected.

The detection further comprises a body movement which, for example, relates to the lifting or pivoting of the leg or foot of the person in the part of the outer area of the vehicle monitored by the sensor arrangement. Disadvantageously, a signal for actuating the tailgate can also be triggered when it is not necessarily about the leg or the foot of the person. For example, animals may pass through the portion of the exterior of the vehicle being monitored by the sensor assembly, or an object, such as a ball, may be running or rolling through the monitored exterior. It is therefore desirable to avoid a malfunction of the operation of the tailgate of the vehicle.

From DE 10 2004 041 709 B3 a further device for contactless actuation of a tailgate of a vehicle via detection means is known. Here, it is proposed to arrange a first detection means for detecting an object in a first detection area and a second detection means for detecting an object in a second detection area, so that actuation of the tailgate can be activated via the detection means. As detection means reference is made to already known devices in a vehicle, which are known as distance detection systems, also PDC systems (Park Distance Control Systems). These systems work with ultrasonic sensors or with radar sensors, and monitor an outdoor area of the vehicle.

Ultrasonic sensors or radar sensors, which are used as detection means for detecting objects in the exterior of the vehicle, have a large current consumption. Permanent monitoring of the exterior of the vehicle by such sensors can therefore not be satisfactorily implemented. As an energy source for the supply of such sensors used in the vehicle battery, so that the device for non-contact operation of a tailgate can not remain permanently switched on.

It is therefore the object of the present invention to provide a device for non-contact operation of a movable part of a vehicle, which overcomes the disadvantages of the above-mentioned prior art and allows permanent monitoring of the exterior of a vehicle. In particular, a reliable and low-energy monitoring of the exterior of a vehicle to be made possible.

This object is achieved on the basis of a device for non-contact operation of the movable part of a vehicle according to the preamble of claim 1, according to claim 16 and according to claim 17 with the respective characterizing features. Advantageous developments of the invention are specified in the dependent claims. The invention includes the technical teaching that the first detection means is designed as a first capacitance sensor and the second detection means as a second capacitance sensor and wherein means are provided with which the detection areas can be predetermined in separate areas. In addition, other detection means may be present, which also have their own detection areas.

For the purposes of this invention, the term "moving part", any door, side or sliding door, flap or the like understood a vehicle having at least one closed state and an open state, wherein the closed state is achieved by an electric and / or mechanical lock In order to prevent unintentional or unauthorized opening, in particular, the lock of this movable part can interact with the central locking system, preferably as an "active or passive keyless-go system", of the vehicle. The vehicle itself may be a motor vehicle.

By implementing the detection means as capacitance sensors results in a very low power consumption for the device for non-contact operation of the moving part of a vehicle. This results in the advantage that the capacitance sensors can be kept permanently in operation in order to monitor an outside area of the vehicle, preferably in the area of the tailgate or the side doors. The capacitance sensors can be designed and dimensioned such that they have a power consumption of less than 100 μA, at least when at rest. Such a low power consumption allows a permanent monitoring of the exterior of the vehicle, so that the device for non-contact operation of the movable part of the vehicle can always remain in operational readiness. A further improvement of the function of the device for non-contact operation of the movable part is achieved in that means are provided with which the detection areas can be predetermined in separate areas. Thus, the advantage is achieved that the first detection area does not overlap with the second detection area. Due to the separate detection areas different body parts of a person can be detected independently. By using the means according to the invention for the spatial separation of the detection areas, the current consumption of the capacitance sensors can be further reduced. The capacitance sensors may each have one or more sensor electrodes, which have a capacitive coupling with the surrounding area. The higher the charge density on the sensor electrodes, the higher the capacitive coupling.

However, in the presence of the means according to the invention for specifying the respective detection regions, the electrical charge stored on the sensor electrodes can be lower in order nevertheless to achieve a high sensitivity of the capacitance sensors. The result is a further reduction of the current consumption, whereby a further improvement of the device for non-contact operation of the movable part is achieved.

An advantageous embodiment of the device has both means for the first and means for the second detection area. Also, more than two detection means may be provided, so that a third or further detection areas may be present. These recognition means can be of identical construction or similar to the first and / or second recognition means and can thus also have corresponding capacity sensors which have clearly defined detection areas. The means for the detection areas are designed so that the first detection area has a substantially horizontal extent, whereas the second detection area has a substantially vertical extent. A third detection area of a third detection means may be arranged, for example, in addition to the first or second detection area. It is also conceivable that a third detection area is arranged between the first or second detection area. Thus, an accurate detection of the object and / or a corresponding movement pattern of the object can be easily detected by measurement, whereby false actuations of the movable part can be reliably prevented. The capacity sensors may be arranged for actuation of a tailgate preferably in the rear region of the vehicle and in particular in and / or on the rear bumper of the vehicle. The arrangement of the capacitance sensors takes place in such a way that, for example, a leg can be detected by the first capacitance sensor with the horizontal detection region as an object of an upright person to be detected. So runs a person to the rear of the vehicle, this movement is detected by the first capacitance sensor with the horizontal detection area. If the person stops behind the vehicle and the person moves a foot into the area below the rear bumper, this movement can be detected by the second capacitance sensor with the vertical detection area. The capacitance sensors can be arranged for actuating a side door in the door sill area of the vehicle, in particular in and / or at the lower end of the side door of the vehicle. It is also conceivable that the capacitance sensors are arranged directly on or in the door sill and not in the side door itself. In this case, preferably at least one horizontal and one vertical detection area, as in the tailgate, is provided.

Through the use of at least two detection areas, a movement pattern of the object can be recognized by the device, the intention to operate the movable part of the vehicle. If, for example, the person raises his foot, a further change in the charge can take place on the sensor electrode of the second capacitance sensor. Consequently, there is the possibility of the operation of the tailgate to a predetermined movement pattern to bind the person and in particular a movement pattern of the person's foot. This movement pattern may, for example, follow the approach of the person to the vehicle and comprise a simple and preferably a double or multiple foot movement.

It is also conceivable that initially the capacitance sensor detects the movement of a leg, whereby z. B. the second capacitance sensor is turned on. When the second capacitance sensor is switched on, it tries to detect the corresponding foot of the leg by measurement. It can be z. B. the entrance of the foot are measured in the second detection area. This movement pattern can be used to trigger the operation of the moving part. It is also possible that the foot may need to be removed again immediately from the second detection area in order to trigger the actuation of the movable part. In addition, if necessary, the leg must also be removed from the first detection area in order then to trigger the actuation of the movable part. In addition, it is conceivable that a third detection means, which may also be configured as a capacitance sensor, first detects the approach of a person to the vehicle, whereby the monitoring of the movement pattern starts or is turned on. Also, this measured approach can serve only for the first and second detection means.

The first and / or the second capacitance sensor can be formed like a wire or foil, wherein the wire or the foil forms the sensor electrode of the capacitance sensor. Preferably, the wire-like or sheet-like sensor electrode may extend over part or, preferably, the entire width of the bumper or width of the side door of the vehicle. Consequently, the device for actuating a tailgate or a side of a vehicle from different areas in the vicinity of the rear or the corresponding side door of the vehicle is possible. The sensor electrodes can Be part of the rear bumper, the side door or the door sill or inside glued in this or fastened with fastening means. Furthermore, the sensor electrodes can already be processed in the spheroidal casting process for producing the bumper. The capacitance sensors within the bumper, the side door or the door sill have a spatial separation, so that the first capacitance sensor is located in the vertical extension region, whereas the second capacitance sensor preferably in the lower, transient region of the rear bumper, the side door or the door sill is introduced.

For improved specification of the geometrically separate detection areas, the means provided for this purpose are designed in the form of metallic shields. These metallic shields extend on the side of the capacitance sensors facing away from the first and the second detection region, so that the shields surround the capacitance sensors in a half-shell-like manner, wherein at least one insulation layer is provided between the capacitance sensors and the shields. Furthermore, the metallic shields have the same electrical potential as the respective sensor electrodes. For this purpose, the metallic shields can be electrically connected electrically to the respective sensor electrodes. As a result, an "active shield" is formed, which influences or determines the detection range of the sensor electrodes, whereby the detection area in the direction of the interior area of the bumper, the side door or the door sill is substantially prevented It is proposed that the shields at least partially surround the capacitance sensors in a U-shape, wherein the capacitance sensors are arranged in the U-shaped opening and the respective detection area of the capacitance sensors lies in front of the U-shaped opening of the shield Case (U-shaped shield) not only on the far back of the detection area through covered the shield, but largely on the respective edge sides. In addition, a metallic ground shield can be used, which can be arranged behind the respective capacitance sensors with their active shields. These are thus arranged on the rear side of the detection area of the respective sensor in the direction of the vehicle. Due to the additional ground shield, the detection area is directed safely and reliably away from the vehicle to the desired monitoring area.

It is also conceivable that in addition to the capacitance sensors so-called compensation or compensating electrodes are used, each electrically isolated z. B. are arranged on the left and right side next to the actual capacitance electrode. These compensating electrodes can optionally also be covered by the shielding. If a U-shaped shield is present, the balancing electrodes, such as the capacitance electrode, are to be arranged in the U-shaped opening. The compensating electrodes serve metrological disturbances, z. As by pollution, rain or the like, to detect and compensate in the detection range of the capacitance electrodes to avoid incorrect measurement of the capacitance sensors.

The metallic shields of the respective capacitance sensors, optionally with the aforementioned compensation or compensation electrodes, may be implemented with the sensor electrodes as a single component having a sandwiched structure. In this case, an insulation between the metallic shields and the sensor electrode and possibly the compensation or compensation electrodes and possibly the ground shield is provided so that the metallic shield maintains a geometric distance to the sensor electrode in the form of conductors or in the form of a film. In particular, the metallic shield surrounds the sensor electrodes at the edge (eg U-shaped, as already described above), whereby a further improvement of the geometric separation of the respective detection areas from each other is made possible.

According to an advantageous development of the device according to the invention, a control unit is provided which is connected to the capacitance sensors and which is operatively connected to an actuating unit of the movable part of the vehicle. The control unit may comprise means for supplying and operating the capacitance sensors. Further, the control unit may comprise a logic gate between the capacitance sensors and an actuator unit for actuating the movable part of the vehicle. Consequently, the capacitance sensors can provide the information to the control unit as to whether an object is in the respective detection area of the capacitance sensors. The detection of a predetermined movement pattern can take place in the control unit, so that the operating unit for opening or closing the movable part is triggered only in the presence of the required movement pattern.

It is also conceivable that after a first signal or only after a defined movement pattern lighting and / or display means are turned on, illuminate the detection areas in particular. By illuminating the person can be displayed, which detection area is next waiting for a measurement signal or an object in the detection area. Also, by the lighting and / or display means of the concrete state of an access authorization system or the sensor system can be displayed. Thus, it is possible that on the sidewalk or the road next to or behind the vehicle, the words "OPEN" or "CLOSE", in particular by a laser diode is displayed. This display can be coupled to the detection of an ID transmitter for the vehicle, ie only when the correct ID transmitter is detected in the vicinity of the vehicle of the other sensors, the lighting and / or display means is turned on. To operate the device according to the invention can be further provided that an ID transmitter is present, which is operatively connected to the control unit preferably by means of a wireless communication link. Such ID transmitters are also known as conditional access systems for a user of a vehicle and are often referred to as "keyless go systems." If the user of a vehicle has such an ID transmitter, then this is detected by a transceiver unit within the vehicle As a result, the user of the vehicle is authenticated so that he or she can open the vehicle or put the vehicle into operation, for example.

According to the invention, the control unit can be developed such that an actuation of the movable part takes place only when the presence of an ID transmitter is detected by the control unit. For example, if the person with the ID transmitter is not in the area of the vehicle, then the capacity sensors can detect the movement pattern of a person in the detection area of the vehicle, but the control unit does not trigger the opening or closing of the tailgate. Only in the presence of the ID transmitter and an authentication thus carried out at the same time executed and detected by the capacitance sensors movement pattern, the operation of the movable part.

The triggering of the opening or the closing of the movable part can also be made dependent on whether the vehicle is traveling or standing, wherein the actuation of the movable part is preferably triggered only when the vehicle is stationary and the speed "zero" is detected.

By activating the movable part, an electromechanical lock for the movable part can possibly be controlled simultaneously, whereby the movable part can be opened or closed. In addition, the movable part may be provided with an erection mechanism, whereby the movable part of its closed position is automatically transferred to the open position and possibly vice versa. Thus, the opening and / or closing process can be carried out fully automatically. The mentioned erection mechanism can be completely or partially integrated in the electromechanical lock.

According to a development of the control unit, this is designed such that actuation of the movable part takes place only when the first capacitance sensor detects the presence of a leg within the first detection area and the second capacitance sensor detects the presence of a foot within the second detection area. Of course, the actuation of the movable part is triggered only after this detection pattern when before, during or after the ID transmitter is detected by the control unit of the device.

According to yet another embodiment, the control unit is configured such that actuation of the movable part takes place only when the first capacitance sensor detects the leg before the detection of the foot by the second capacitance sensor. This avoids that in the presence of an object in the lower region of the rear bumper or a side door, the approach of a person is not sufficient to trigger the closing movement or opening movement of the tailgate or the side door. Here, too, the control unit monitors the speed of the vehicle, which preferably has to be "zero" for triggering the opening or closing movement of the tailgate, so that the vehicle is stationary.

The invention is also directed to a method for actuating a movable part of a vehicle, in particular a motor vehicle, with the previously described directed device according to the invention. Features and details which are described in connection with the method according to the invention, of course, also apply in connection with the device according to the invention and vice versa.

Further measures improving the invention will be described in more detail below together with the description of preferred embodiments of the invention with reference to the figures. It shows:

1a shows an embodiment of the device for contactless operation of a tailgate with a first capacitance sensor and a second capacitance sensor and respective means for specifying the detection areas,

FIG. 1b shows an exemplary embodiment of the device for the contactless actuation of a side door with a first capacitance sensor and a second capacitance sensor,

Figure 2 shows an embodiment of the inventive device for

Activation of the operation of a tailgate by a leg and a foot of a person,

FIG. 3 shows a schematic plan view of the arrangement of the capacitance sensors within a rear bumper of a vehicle,

Figure 4 is a schematic side view of the arrangement of the second

Capacity sensor inside the rear bumper of a vehicle with a metallic shield and

Figure 5 is a schematic view of the control unit in operative connection with the

Capacitance sensors, the ID transmitter and the tailgate. Figure 1 a shows an embodiment of the device according to the invention for the contactless operation of a tailgate 10.1 as a movable part 10 of a vehicle 1, which is a motor vehicle. The movable member 10 is held and secured by an electromechanical lock 25 in the closed position. The device comprises a first detection means 11 for detecting an object 17, 18 in a first detection area 11a and a second detection means 12 for detecting an object in a second detection area 12a. The detection means 11 and 12 are designed as capacitance sensors 11 and 12 and indicated only schematically in the view. The detection area 11 a covers the horizontal area behind the rear bumper 16 of the vehicle 1. On the other hand, the detection area 12a covers the lower area below the rear bumper 16. This creates a first detection area 11 a and a second detection area 12 a, which are geometrically separated from one another and do not include a common area on the outside of the rear bumper 16. The detection areas 11 a and 12 a are indicated by rays, but only indicate areas in which describe a change in the dielectric constant between the capacitance sensors 11 and 12 and the surroundings of the rear bumper 16. This change in the dielectric constant causes a change in the charge storable on the electrodes of the capacitance sensors 11 and 12, which can be detected by the device. Thus, by the capacitance sensors 11 and 12, the presence of an object, in particular the presence of body parts of a person can be provided with minimal power consumption.

Behind the capacitance sensors 11 and 12 extend means 13 and 14, which are in the form of metallic shields 13 and 14 and which enclose the capacitance sensors 11 and 12 arc-like or half-shell-like. By the shields 13 and 14, both the respective detection area 11 a and 12 a predetermined, with an improved separation of the detection areas 11 a and 12a is made possible from each other. The metallic shields 13 and 14 have the same electrical potential as the corresponding capacitance sensors 11 and 12. Thus, these are so-called "Active Shields" 13, 14. Behind these "Active Shields" 13, 14 can additionally ground electrodes 24 and Ground shields 24 may be provided, whereby the detection areas 11 a, 12 a of the capacitance sensors 11 and 12 are directed in the reverse direction to the ground shields 24, ie away from the ground shields 24.

FIG. 1 b shows a similar exemplary embodiment of the device according to the invention for the contactless actuation of a side door or sliding door 10. 1 as a movable part 10 of a vehicle 1. Here, the two capacitance sensors 11 and 12 are arranged in the door sill area 23 and aligned comparable to the aforementioned bumper 16 in the rear area 15. Optionally, the two capacitance sensors 11 and 12 may also be arranged in the lower region 27 of the side door 10.2, preferably under a rockfall protection. An approach of the object to the side door 10.2 can be determined by the first capacitance sensors 11 or the proximity sensor proximity sensor, which is usually arranged in the door handle 28. In the further recognition of a movement pattern for the actuation of the movable part 10 by the detection means 11, 12, the embodiments of Figures 1 to 5 do not differ. The detection means 11, 12 with the associated means 13, 14 may optionally be provided with a ground shield 24.

FIG. 2 shows a side view of a section of the rear bumper 16 or of the lower region of the side door 10. 2, in which the capacitance sensors 11 and 12 are inserted with the respective shields 13 and 14. As shown, a leg 17 of a person is partially shown and protrudes into the horizontally extending first detection area 11 a. The leg 17 By contrast, the adjoining foot 18 projects into the detection area 12a extending vertically below the rear bumper 16 or the door sill area 23. The person has approached the vehicle 1 in the area of the rear bumper 16 or the side door 10.2 by way of example. Consequently, the first capacitance sensor 11 can detect the approach of the person by the penetration of the leg 17 into the first detection area 11 a. If the person signals the intention of actuating the movable part 10 by moving the foot 18 into the second detection area 12a, a predetermined pattern of movement of the person results. Due to the coupled detection of both the leg 17 and the foot 18, the actuation of the tailgate 10.1 or the side door 10.2 can be triggered. Likewise, the corresponding detection areas 11a, 12a can be illuminated by a lighting and / or display means, not shown. Also, the state of the movable part 10 on the sidewalk or the road next to the vehicle can be indicated by a font. Upon actuation, the electromechanical lock 25 is adjusted so that it releases the movable part 10, whereby it can be transferred from a closed position to an open position. The opening and / or closing operation can itself be effected mechanically by the raising mechanism 26 indicated in FIG. 1, which is likewise activated by the actuation.

Also in FIG. 2, ground electrodes 24 or ground shields 24 can optionally be provided for the "active shields" 13, 14.

Figure 3 shows in a plan view the arrangement of the capacitance sensors 11 and 12 within the rear bumper 16 of the vehicle 1. The rear bumper 16 extends over the entire rear area 15 of the vehicle, the bumper 16 being shown in full width. As shown, it can be seen that the capacitance sensors 11 and 12 may extend approximately over the entire width of the bumper 16. Consequently, a person can be anywhere on the entire rear portion 15 of the vehicle. 1 approach and perform the movement described in Figure 2 of the leg 17 and the foot 18.

The illustration shows the arrangement of the first capacitance sensor 11 in the vertical region of the bumper 16, whereas the second capacitance sensor 12 is indicated with the shield 14 enclosing this in the lower region of the bumper 16. The capacitance sensors 12 may be introduced or laid in the manner of a foil or a conductor track over the width of the bumper 16. The capacitance sensors 11 and 12 with the respective shields 13 and 14 are preferably arranged on the inside in the bumper 16.

Figure 4 shows a schematic side view of the arrangement of the second capacitance sensor 12 within the bumper 16, which could just as well be arranged in or on the side door 10.2 or the associated door sills. The capacitance sensor 12 is shown in cross-section and has a planar extension. The capacitance sensor 12 is enclosed on the rear side by a metallic shield 14, which has the same potential of the sensor 12, so that the detection area 12 a is oriented only in the direction of the underside of the rear bumper 16. In addition, to improve the shielding effect, the ground shield 24 is provided, which is connected to a ground contact 19, which is exemplified as grounding, and which connects the shield 24 to the ground of the vehicle. As a result, the directional specification of the detection area 12a is further improved.

FIG. 5 shows, in a schematic view, the operative connection of the control unit 20 with the first capacitance sensor 11 and the second capacitance sensor 12. The control unit 20 has a logic element 22, which is embodied as an AND logic gate. The AND gate 22 activates the tailgate 10 when at least the first capacitance sensor 11 and the second capacitance sensor 12 detect the presence of an object. If only the presence of an object, for example a leg 17 or a foot 18, is detected by one of the capacitance sensors 11 or 12, then the control unit 20 does not trigger the tailgate 10. Only when the presence of an object is detected by both capacitance sensors 11 and 12 can the actuation of the tailgate 10 be triggered.

Furthermore, an ID transmitter 21 is indicated, which communicates via a wireless connection with the control unit 20. The ID transmitter 21 forms an access authorization for authentication of a person who is queried by the control unit 20. Only in the presence of such an ID transmitter 21 and the positive message both capacitance sensors 11 and 12, the operation of the tailgate 10 is triggered.

The invention is not limited in its execution to the above-mentioned preferred embodiment. Rather, a number of variants is conceivable, which makes use of the illustrated solution even with fundamentally different types of use. All features and / or advantages resulting from the claims, the description or the drawings, including design details, spatial arrangements and method steps, can be essential to the invention, both individually and in the most diverse combinations. So z. B. more than two capacitance sensors with additional detection areas are used. Reference list

I vehicle

10 moving part

10.1 tailgate

10.2 Side door, sliding door

I 1 first detection means, first capacitance sensor

11 a first detection area

12 second detection means, second capacitance sensor 12a second detection area

13 means for specifying the first detection area

14 means for specifying the first detection area

15 rear area

16 rear bumper

17 leg

18 feet

19 ground contact

20 control unit

21 ID encoders

22 link

23 door sill area

24 ground electrode / ground shield

25 Castle

26 erection mechanism

27 lower side door area

28 door handle

Claims

Patent claims

1. A device for the contactless actuation of a movable part (10) of a vehicle (1), in particular a tailgate (10.1), a side door (10.2) or the like, with a first detection means (11) for detecting an object in a first detection area (11 a) and a second detection means (12) for detecting an object in a second detection area (12a), so that the actuation of the movable part (10) can be activated via the detection means (11, 12), characterized in that the first detection means (11 ) as a first capacitance sensor (11) and the second detection means (12) as a second capacitance sensor (12) is formed and wherein means (13, 14) are provided, with which the detection areas (11 a, 12 a) can be predetermined in separate areas are.

2. Device according to claim 1, characterized in that the means (13) is formed such that the first detection area (11 a) has a substantially horizontal extent and that the means (14) is formed such that the second detection area ( 12a) has a substantially vertical extension.

3. Device according to claim 1 or 2, characterized in that the capacitance sensors (11, 12) for the tailgate (10.1), in the rear region (15) of the vehicle (1), in particular in and / or on the rear bumper (16) of Vehicle (1), are arranged.

4. Device according to claim 1 or 2, characterized in that the capacitance sensors (11, 12) for the side door (10.2) in the door sill area (23) of the vehicle (1), in particular in and / or at the lower end of the side door (10.2) of the vehicle (1) are arranged.

5. Device according to claim 3 or 4, characterized in that the first capacitance sensor (11) in and / or on the rear bumper (16) or at the lower end of the side door (10.2) of the vehicle (1) is arranged such that at least a leg (17) of at least one upwardly moving person can be detected by the horizontally extending detection area (11 a) of the first capacitance sensor (11).

6. Device according to one of the preceding claims, characterized in that the second capacitance sensor (12) in and / or on the rear bumper (16) or at the lower end of the side door (10.2) of the vehicle (1) is arranged such that at least a foot (18) of at least one upwardly moving person is detectable by the vertically extending detection area (12a) of the second capacitance sensor (12).

7. Device according to one of the preceding claims, characterized in that the capacitance sensors (11, 12) are wire-like or foil-like and extend substantially over the entire width of the bumper (16).

8. Device according to one of the preceding claims, characterized in that the means (13, 14) in the form of a metallic shield (13, 14) are formed, which on the first and second detection area (11 a, 12 a) facing away extend the capacity sensors (11, 12) and enclose them like a shell.

9. Device according to claim 8, characterized in that the metallic shields (13, 14) each have the same potential of the capacitance sensors (11, 12).

10. Device according to one of the preceding claims, characterized in that at least one capacitance sensor (11, 12) is additionally provided with a ground electrode (24) to align the corresponding detection area (11a, 12a).

11. Device according to one of the preceding claims, characterized in that a control unit (20) is provided which is connected to the capacitance sensors (11, 12) and which is operatively connected to an actuating unit of the tailgate (10) of the vehicle (1).

12. Device according to one of the preceding claims, characterized in that an ID transmitter (21) is provided which is operatively connected to the control unit (20) preferably by means of a wireless communication link.

13. Device according to claim 12, characterized in that the control unit (20) is designed such that an actuation of the movable part (10) takes place only when the presence of the ID transmitter (21) detected by the control unit (20) becomes.

14. Device according to one of the preceding claims, characterized in that the control unit (21) is designed such that actuation of the movable part (10) takes place only when the first capacitance sensor (11) the presence of a leg (17) within the first detection area (11 a) and the second capacitance sensor (12) the Presence of a foot (18) detected within the second detection area (12a).

15. Device according to one of the preceding claims, characterized in that the control unit (21) is designed such that an actuation of the movable part (10) takes place only when the first capacitance sensor (11) the leg (17) before detection of the foot (18) detected by the second capacitance sensor (12).

16. A method for actuating a movable part (10) of a vehicle (1), in particular a tailgate (10.1), a side door (10.2) or the like, with a device according to one of claims 1 to 15.

17. vehicle (1) with a device according to one of claims 1 to 15.