Radar assembly for motor-driven flap arrangement of motor vehicle

Abstract

The invention relates to a radar assembly for a motor-driven flap arrangement (2) of a motor vehicle (3), the radar assembly (1) having a plurality of radar antennas (5) and a control assembly (6) which operates the radar antennas (5) for transmitting radar beams, and wherein the control assembly (6) is designed to control the radar antennas (5) in order to transmit the radar beams. Radar values for an operator action carried out by an operator (7) are determined on the basis of a radar beam received via a radar antenna (5) in order to trigger the motor-driven flap arrangement (2). According to the invention, the radar assembly (1) has a switching device (8) which is actuated by means of the control assembly (6), said switching device switching on the control assembly (6) for selectively operating and evaluating at least one of the plurality of radar antennas (5).

Description

Field of the Invention

[0001] The present invention relates to a radar assembly for a motor-driven flap arrangement for a motor vehicle according to the preamble of claim 1, a flap arrangement for a motor vehicle according to claim 9, and a method for operating a flap arrangement for a motor vehicle according to claim 14. Background Art

[0002] The motor-driven flap arrangement under discussion is configured to adjust a closure element of a motor vehicle by means of an electric drive. The term "closure element" should currently be understood in a broad sense and includes, for example, the rear flap, rear lid, engine hood, side door, trunk flap, window glass, retractable roof, etc. of a motor vehicle. The closure element can be arranged pivotably and / or longitudinally displaceably on the motor vehicle body. The application areas of adjusting the rear flap and the side door are exemplarily highlighted below.

[0003] The known prior art (DE 102016125371 A1) on which the present invention is based relates to a radar assembly for a motor-driven flap arrangement, wherein the triggering of the motor-driven adjustment is effected via a defined operator action. For example, the operator gesture is a predefined foot movement of the operator. For this purpose, the movement performed by the operator is detected and evaluated by a radar module with a control component.

[0004] In order to improve the resolution of the operator action detected via radar values, in principle, a plurality of radar modules can be used on the motor vehicle, which radar modules have corresponding radar antennas and corresponding control components. In addition to improving the detection (especially the angular resolution using radar values), the detection range of the entire radar assembly can also be optimized via a plurality of radar modules.

[0005] One challenge here is that the manufacturing effort and the cost of the radar assembly are increased when using a plurality of radar modules. In addition, complex tuning of the radar modules of the radar assembly with respect to one another may be necessary. Summary of the Invention

[0006] The problem on which the present invention is based is to design and improve the known radar assembly in such a way that an improved detection of the operator action performed is achieved in a simple manner and with low cost expenditure.

[0007] The above problem is solved by the features described in claim 1.

[0008] The following important basic consideration: A plurality of, in particular differently designed and arranged, radar antennas are selectively operated via a common control component. The common control component is responsible for determining radar values for an operator action performed by the operator on the basis of the radar beams received via the plurality of radar antennas for triggering the motor-driven flap arrangement.

[0009] Specifically, it is proposed that the radar assembly has a switching device that is controlled by a control assembly, and this switching device switches on (or is referred to as switching in, i.e., zuschalten) the control assembly for selectively operating and evaluating at least one of a plurality of radar antennas.

[0010] Therefore, the control assembly can be used for a plurality of radar antennas via this switching device, and they are preferably operated successively in chronological order. Thus, different from the prior art, it is not necessary to have a plurality of control assemblies in the corresponding radar modules. Instead, by using the switching device, additional radar antennas can be operated with the same control assembly.

[0011] Particularly preferably, according to claim 3, a common control assembly is used for radar antennas with different antenna characteristics, especially antenna pairs, by means of a switching device. For example, in the case of selectively switching on by means of the switching device, a combination of a patch antenna and an end-fire antenna can be operated via the control assembly for detection in a wide angular range. If the radar antennas are arranged on a common circuit board, a particularly compact radar assembly can be created with the proposed solution.

[0012] Furthermore, it is interesting that, according to claim 4, the control assembly is used to control for UWB operation, so that in addition to measuring radar values, UWB communication with the operator's mobile device can also be achieved. At this time, the radar antenna can be tuned for the corresponding operating mode, and due to the use of the switching device, additional functionality is achieved with low cost. With UWB operation, the time interval between UWB pulses can be advantageously used for selective switching on, so that in particular there is no delay caused by selective switching on (claim 5).

[0013] In a preferred design according to claim 6, the radar assembly is furthermore set to determine UWB positioning information, which can be determined, for example, via the travel time of signals in UWB communication. As a supplement to the radar values, the UWB positioning information can be used to identify the operator's actions and especially for plausibility checks, which is the content of claim 7.

[0014] According to another teaching with independent significance according to claim 9, a flap arrangement for a motor vehicle is claimed. The flap arrangement has: a closing element for the motor vehicle; a drive assembly associated with the closing element, the drive assembly having at least one drive for motor-driven adjustment of the closing element; and the proposed radar assembly.

[0015] The flip-up arrangement is configured to check, based on predefined operator action criteria, whether there is an operator action performed by the operator, by means of radar values measured by means of a radar assembly and / or UWB positioning information measured by means of the radar assembly, and to trigger a motor-driven adjustment of the closing element when the operator action criteria are met. All embodiments regarding the proposed radar assembly can be referred to.

[0016] In a preferred design of the flip-up arrangement according to claim 10, a radar antenna with predefined radiation characteristics is used in order to achieve an improved detection of operator actions at the motor vehicle, such as foot movements.

[0017] Furthermore, it is advantageous to combine the radar assembly of the flip-up arrangement according to claim 11 with a Bluetooth module, wherein Bluetooth communication is used in particular for authentication, and the detection of operator actions can be carried out via the radar values.

[0018] According to claim 13, energy savings during operation of the flip-up arrangement can be achieved by activating the radar assembly upon successful authentication.

[0019] According to another teaching, which is also independent and according to claim 14, a method for operating a flip-up arrangement of a motor vehicle when using the proposed radar assembly is claimed. Based on predefined operator action criteria, it is checked whether there is an operator action performed by the operator, by means of radar values measured by means of the radar assembly and / or UWB positioning information measured by means of the radar assembly, wherein a motor-driven adjustment of the closing element is triggered when the operator action criteria are met. All embodiments regarding the proposed radar assembly and the proposed flip-up arrangement can be referred to. Description of the Drawings

[0020] The invention is explained in more detail below on the basis of the drawings, which only show embodiments. In the drawings,

[0021] Figure 1 a rear region of a motor vehicle with a proposed flip-up arrangement and with a proposed radar assembly is shown, and

[0022] Figure 2 is shown in a top view Figure 1 of the motor vehicle in a) the case of UWB communication and b) the case of detecting the operator's posture. Detailed Description

[0023] The proposed radar assembly 1 is provided for a motor-driven flip-up arrangement 2 of a motor vehicle 3. In the shown and in this regard preferred embodiment, the flip-up arrangement 2 is configured to transfer the flip-up arrangement 2 from the closed position to Figure 1The open position shown in [Fig.]. Similarly, it can be set to transfer from the open position to the closed position.

[0024] In principle, other motor-driven adjustment functions of the flap arrangement 2 can also be set, such as unlocking and / or opening of a motor vehicle lock associated with the flap arrangement 2. Possible design solutions of the flap arrangement 2 refer to the embodiments at the beginning, where, in Figure 1 and 2 the flap arrangement 2 is exemplarily associated with a rear flap 4.

[0025] The radar assembly 1 has a plurality of radar antennas 5 and a control assembly 6. Here, the radar antennas 5 are configured by electrically conductive elements, which are set for transmitting and receiving radar beams. The control assembly 6 is set to operate the radar antennas 5 for transmitting radar beams. For this purpose, the control assembly 6 can have a signal generator, which acts on the radar antennas 5 to generate radar beams.

[0026] The control assembly 6 is set to determine radar values for an operator action performed by the operator 7 via the radar beams received by the radar antennas 5 for triggering the motor-driven flap arrangement 2. If the operator 7 of the motor vehicle 3 performs an operator gesture at the flap device 2 as an operator action, the radar value can indicate, for example, the distance and / or speed of a body part of the operator 7 here. Specifically, a radar target within the detection range of the radar antennas 5 can be identified based on the received radar beams, where the radar target is associated with (in particular, angle-resolved) distance values and / or speed values. Based on the radar values, it can be checked whether an operator action criterion is met, where meeting it can lead to the control of the motor-driven flap arrangement 2, which will be further described below.

[0027] Now importantly, the radar assembly 1 has a switching device 8 controlled by the control assembly 6, which switches on the control assembly 6 for selectively operating and evaluating at least one of the plurality of radar antennas 5.

[0028] Preferably, the switching device 8 has a switching element, in particular a high-frequency adapter, which is set for selectively activating and deactivating the transmission of signals between the radar antennas 5 and the control assembly 6, which signals occur with the operation of the radar antennas 5 and the reception of radar beams. Preferably, the switching element is set for transmitting signals within the frequency range set in the case of radar operation.

[0029] "Selective activation" shall be understood here as meaning that, at a given moment, only a preset selected radar antenna (e.g., only one or two radar antennas) out of a plurality of radar antennas 5 is connected to the control component 6 for operation to transmit a radar beam and for transmitting signals related to the received radar beam. The remaining radar antennas 5 can be separated from the control component 6 or at least decoupled in such a way that radar operation is not achieved using the remaining radar antennas 5. For example, by means of a switching device 8, the signal transmitter mentioned is only connected to the selected radar antennas 5, while the remaining radar antennas 5 are separated from the signal generator. Thus, with the proposed radar assembly 1, the same components of the control component 6 can be used in a selectable manner for different radar antennas 5.

[0030] The control component 6 controls the switching device 8, where the control component 6 in particular outputs control signals to the switching device 8 as to which of the plurality of radar antennas 5 are to be activated or deactivated. Accordingly, the control component 6 can selectively activate the radar antennas 5 in chronological order. For example, one or more of the radar antennas 5 are run in succession, in particular alternately, for transmission and used for reception.

[0031] As Figure 1 schematically shown, the switching device 8 can be an electronic component additional to the control component 6, whereby the switching device 8 can be retrofitted, for example together with further radar antennas 5, to an existing control component 6. Likewise, the switching device 8 can be implemented as integrated with the control component 6, for example on a common circuit board or as a system on a chip.

[0032] Preferably, at least one antenna pair, preferably a plurality of antenna pairs, consisting of spatially adjacent radar antennas 5 is provided as the radar antennas 5.

[0033] The respective antenna pairs can be selectively activated via the switching device 8 of the control component 6. For example, by means of the control component 6, one antenna pair is run for transmission and one antenna pair is used for reception at a given moment in chronological order.

[0034] Particularly preferably, at least two of the radar antennas 5, in particular at least two pairs of the antenna pairs, have antenna characteristics that are different from one another. "Different from one another" antenna characteristics means that the radiation characteristics (e.g., main lobe) of the radar antennas 5 are oriented and / or shaped significantly differently.

[0035] Preferably, at least one of the radar antennas 5 is designed as a patch antenna, and at least one of the radar antennas 5 is designed as an end-fire antenna, in particular a Vivaldi antenna. Preferably, the patch antenna can have a main radiation direction approximately perpendicular to the extension plane of the patch antenna, while the main radiation direction of the end-fire antenna can be arranged substantially in the extension plane of the end-fire antenna. Thus, a large angular range can be covered with the flat structural form of the radar antenna 5 without necessarily requiring additional control electronics. In a particularly preferred design, at least two radar antennas with different antenna characteristics in the radar antenna 5 are arranged on a common circuit board of the radar assembly 1.

[0036] In principle, the radar operation carried out by means of the control component 6 and the radar antenna 5 can be carried out as a continuous radar operation, for example, FMCW radar operation. At this time, the frequency range of an exemplary radar beam is a frequency band around 24 GHz and 77 GHz.

[0037] However, it is preferably provided here that the control component 6 controls at least one of the radar antennas 5 in UWB operation. Preferably, the control component 6 is set to carry out UWB communication with a mobile device 9 associated with the operator 7 of the motor vehicle 3 by means of at least one radar antenna 5.

[0038] The control component 6 and at least one of the radar antennas 5 are set here to operate using UWB technology and in particular to carry out positioning and / or communication in the frequency range from 3.1 GHz to 10.6 GHz. At this time, the requirements for the switching device 8 can be lower compared to high-frequency pulsed or continuous radar operation. However, a combination of UWB operation and FMCW radar operation is also conceivable, where corresponding radar antennas 5 specifically set for the respective radar operation can be provided for these operation types.

[0039] The pulsed radar operation opens up the advantageous possibility of selectively switching on between radar pulses. It is preferably provided here that, respectively after generating a preset number of UWB pulses, in particular after generating a preset number of UWB pulse packets, the control component 6 selectively switches on at least one additional radar antenna among the plurality of radar antennas 5 by means of the switching device 8.

[0040] Preferably, the selected radar antenna of the plurality of radar antennas 5 operates with a preset number of UWB pulses and is then selectively followed in time by another selected radar antenna among the plurality of radar antennas 5 of the control component 6. Before switching on the other selected radar antenna, the reception of the radar beam can first be carried out by the selected radar antenna of the plurality of radar antennas 5.

[0041] The UWB pulse packet is understood as a plurality of UWB pulses that are continuous in time and, in particular, as a UWB data packet according to a communication standard. For example, within the UWB pulse packet, a preset number of UWB pulses are sent in short time intervals between the UWB pulses, and a longer time interval is set between each UWB pulse packet. Correspondingly, in order to selectively turn on by means of the switching device 8, a longer time interval is provided between the UWB pulse packets.

[0042] Furthermore, it is preferably arranged here that the control component 6 operates at least one of the radar antennas 5 in a positioning routine for UWB communication to determine UWB positioning information about the mobile device 9 relative to the radar component 1, and the control component 6 operates at least one additional radar antenna 5 in the positioning routine to measure radar values about the operator 7 when selectively turning on at least one additional radar antenna 5 by means of the switching device 8.

[0043] Here, the radar values, which can in particular include distance values and / or speed values as already mentioned, are based on the following radar operation of the radar antenna 5, in which the return beam of the transmitted radar beam is utilized. In contrast, the UWB positioning information is based on UWB communication and, for example, on travel time information, which is exchanged by comparing the transmission time and reception time of UWB signals used for communication between communication partners (here the radar component 1 on the vehicle side and the mobile device 9 of the operator 7). As the mobile device 9, for example, an electronic key, a smartphone, a wearable device, etc. can be applied.

[0044] Furthermore, it is preferably arranged here that the control component 6 performs a plausibility check on the radar values based on the UWB positioning information in the positioning routine. At this time, it can be checked whether the operator actions detected in the radar values can be associated with high reliability with the person who also carries the mobile device 9. For example, a maximum distance is preset between the position of the mobile device 9 included in the UWB positioning information and the position of the operator actions included in the radar values. Thus, false triggering caused by other movements detected in the radar values can be avoided.

[0045] Similarly, the control component 6 can perform a plausibility check on the UWB positioning information based on the radar values. For example, the UWB positioning information is used for the entry function of the motor vehicle 3, and in this case, it is checked based on the radar values whether the UWB positioning information is consistent with the radar target position in the radar values.

[0046] Furthermore, it is preferably arranged here that the control component 6 checks whether there are operator actions performed by the operator 7 based on preset operator action criteria for the radar values and / or the UWB positioning information, and the control component 6 prompts the triggering of the motor-driven flap arrangement 2 when the operator action criteria are met.

[0047] Preferably, in the operator action standard, an effective operator action is defined as the operator's posture. During the monitoring process, here it is checked by means of the control component 6 whether the radar value meets the operator action standard. Here, the operator action standard can be related to predetermined characteristics of the operator action (such as the position, speed, acceleration, etc. of the body part of the operator 7). For example, it can be checked whether the detected radar value is consistent with the preset characteristics, and the similarity between the radar value representing the operator action and the corresponding characteristics is determined. According to the test results, for example, the detected operator action is determined to be invalid and discarded, or is recognized as an effective operator action. In the first case, no triggering of the flap arrangement 2 occurs. In the second case shown, preferably, the flap arrangement 2 is controlled by means of the control component 6, whereby here a motor-driven adjustment of the flap arrangement 2 is caused. Here, the effective operator action in the operator action standard can represent a preset movement process of the body part of the operator 7, such as, for example, Figure 1 the back-and-forth movement of the foot or the wiping movement of the hand as shown in

[0048] Furthermore, it is preferably provided here that the control component 6 checks whether the radar value meets a preset collision standard and / or a clamping standard, and when the collision standard and / or the clamping standard are met, modifies, in particular terminates or prevents the control of the motor-driven adjustment.

[0049] Here, the collision standard represents: in particular, a collision with an object during the opening movement in the motor-driven adjustment and / or possibly being below a preset minimum distance from the object. The clamping standard represents, in particular, the possibility of clamping an object during the closing movement in the motor adjustment. The control component 6 can modify, terminate or prevent the control of the motor-driven adjustment when the collision standard and / or the clamping standard are met in order to avoid collisions or clamping.

[0050] According to another teaching, a flap arrangement 2 for a motor vehicle 3 is proposed, the flap arrangement 2 having: a closing element 10 for the motor vehicle 3; a drive assembly 11 associated with the closing element 10, the drive assembly having at least one drive 12 for motor-driven adjustment of the closing element 10; and a radar assembly 1 according to the proposal. The flap arrangement 2 is configured to check, in accordance with a preset operator action standard, whether there is an operator action performed by the operator 7 based on the radar value measured by means of the radar assembly 1 and / or the UWB positioning information measured by means of the radar assembly 1, and to trigger a motor-driven adjustment of the closing element 10 when the operator action standard is met. All embodiments regarding the proposed radar assembly 1 can be referred to.

[0051] Here and preferably, an electric drive 12 designed as a spindle drive for the drive assembly 11 is provided, which is arranged at opposite sides of the closing element 10. In a design not shown, the drive assembly 11 may have drive control means to which radar values, information about detected operator movements and / or UWB positioning information are transmitted from the control assembly 6 of the radar assembly 1. The drive control means may be integrated into the drive 12, in particular into the spindle drive. It is also conceivable that, as already mentioned for the radar assembly 1, the control of the drive 12 is partially or completely taken over by the control assembly 6 of the radar assembly 1.

[0052] Furthermore, here and preferably it is provided that at least two of the radar antennas 5 of the radar assembly 1 have radiation characteristics that are differently oriented with respect to the flap arrangement 2, whereby the detection range can be enlarged.

[0053] In Figure 1 the shown and preferred design, in the assembled state, at least one of the radar antennas 5 has radiation characteristics covering a horizontal line with respect to the motor vehicle 3. At least one further radar antenna of the radar antennas 5 has radiation characteristics that are different from the horizontal line and in particular cover a vertical line with respect to the motor vehicle 3. Here, the orientation of the horizontal line and the vertical line is relative to the position of the motor vehicle 3 in the horizontal plane.

[0054] For example, in the assembled state, the radar antenna 5 having the mentioned radiation characteristics is arranged at the bumper 13 of the motor vehicle 3. For example, if the preset operator movement is a foot movement in the rear area, the operator movement can be detected with high precision.

[0055] Furthermore, here and preferably it is provided that at least one of the radar antennas 5 has radiation characteristics covering a horizontal line with respect to the motor vehicle 3 in the assembled state, and the control assembly 6 of the radar assembly 1 is set up for UWB communication with a mobile device 9 associated with the motor vehicle 3 by means of this radar antenna 5.

[0056] At least one radar antenna 5 for UWB communication may be the at least one radar antenna 5 already mentioned for detecting operator movements. However, in Figure 1 the shown design, at least one of the radar antennas 5 is arranged for UWB communication and is, for example, arranged above the bumper 13. The other radar antennas 5 are used for detecting operator movements as described previously. Accordingly, the detection range of the radar antennas 5 can be adapted to the respective functionality, whereby simplified operation is ensured via the common control assembly 6.

[0057] In a design not shown, the flip arrangement 2 is provided with a Bluetooth module for Bluetooth communication with the mobile device 9, and the flip arrangement 2 is configured to trigger a motor-driven adjustment of the closing element 10 based on authentication carried out by means of Bluetooth communication. In this design, the respective advantages of Bluetooth communication and UWB operation can be utilized purposefully.

[0058] Furthermore, and preferably here, the flip arrangement 2 is configured to activate the radar assembly 1 upon successful authentication.

[0059] Preferably, in the stationary state, the radar antenna 5 is not operating or is only operating temporarily. If, for example, authentication is carried out via Bluetooth communication with the mobile device 9 and the mobile device 9 is classified as a mobile device 9 authorized to access the flip arrangement 2, the radar antenna 5 is operated continuously or at shorter time intervals. At this time, first, UWB communication ( Figure 2 a)) can be prioritized until the UWB positioning information indicates that the operator 7 is close enough, and then radar values related to the operator's movements are detected ( Figure 2 b)).

[0060] For selective activation, the control assembly 6 can have an activation specification that indicates under what conditions and in what manner activation should take place. For example, during authentication, the following operating mode is carried out first, in which the radar antenna 5 configured for UWB communication is mainly operated compared to the radar antenna 5 configured to detect radar values ( Figure 2 a)). Conversely, according to the activation specification, after the operator 7 is close enough, the radar antenna 5 configured to detect radar values can be mainly operated.

[0061] In addition, Figure 2 b) shows an arrangement of the plurality of radar antennas 5 of the radar assembly 1 in the width direction of the motor vehicle 3, in particular at the bumper 13, thereby preferably enabling improved detection of the operator's movements at different positions in the rear area. According to the proposal, the common control assembly 6 can be utilized again.

[0062] According to another teaching, a method for operating a flap arrangement 2 of a motor vehicle 3 is proposed, the flap arrangement 2 having: a closure element 10 for the motor vehicle 3; a drive assembly 11 associated with the closure element 10, the drive assembly having at least one actuator 12 for motor-driven adjustment of the closure element 10; and a radar assembly 1 according to the proposal. It is checked, based on a preset operator action criterion, whether there is an operator action performed by the operator 7, based on radar values measured by means of the radar assembly 1 and / or UWB positioning information measured by means of the radar assembly 1, wherein, when the operator action criterion is met, a motor-driven adjustment of the closure element 10 is triggered. All embodiments with respect to the proposed radar assembly 1 and the proposed flap arrangement 2 can be referred to.

Claims

1. A radar assembly for a motor-driven flap arrangement (2) of a motor vehicle (3), the radar assembly (1) having a plurality of radar antennas (5) and a control assembly (6), the control assembly operating the radar antennas (5) for transmitting radar beams, and wherein, The control component (6) is configured to determine radar values for an operator action performed by the operator (7) based on radar beams received via the radar antenna (5) for triggering the motor-driven flap arrangement (2). It is characterized in that the radar assembly (1) has a switching device (8) controlled by the control component (6), and the switching device turns on the control component (6) for selectively operating and evaluating at least one of the plurality of radar antennas (5).

2. The radar component according to claim 1, characterized in that, At least one antenna pair, preferably a plurality of antenna pairs, composed of spatially adjacent radar antennas (5) is provided as the radar antenna (5).

3. The radar component according to claim 1 or 2, characterized in that, At least two of the radar antennas (5) have different antenna characteristics. Preferably, at least one of the radar antennas (5) is designed as a patch antenna, and at least one of the radar antennas (5) is designed as an end-fire antenna, especially a Vivaldi antenna. Further preferably, at least two radar antennas with different antenna characteristics among the radar antennas (5) are arranged on a common circuit board of the radar assembly (1).

4. The radar component according to any one of the preceding claims, characterized in that, The control component (6) controls at least one of the radar antennas (5) to operate in UWB mode. Preferably, the control component (6) is configured to perform UWB communication with a mobile device (9) associated with the operator (7) of the motor vehicle (3) by means of the at least one radar antenna (5).

5. The radar component according to claim 4, wherein, After generating a preset number of UWB pulses, especially after generating a preset number of UWB pulse packets, the control component (6) selectively turns on at least one additional radar antenna among the plurality of radar antennas (5) by means of the switching device (8).

6. The radar component according to any one of the preceding claims, characterized in that, The control component (6) operates at least one of the radar antennas (5) in a positioning routine for UWB communication to determine UWB positioning information about the mobile device (9) relative to the radar assembly (1), and the control component (6) operates at least one additional radar antenna (5) in the positioning routine with the at least one additional radar antenna (5) selectively turned on by means of the switching device (8) for measuring radar values about the operator (7).

7. The radar component according to claim 6, wherein, The control component (6) performs a plausibility check on the radar values based on the UWB positioning information in the positioning routine, or performs a plausibility check on the UWB positioning information based on the radar values.

8. The radar component according to any one of the preceding claims, characterized in that, The control component (6) checks whether there is an operator action performed by the operator (7) based on preset operator action criteria for the radar values and / or the UWB positioning information, and the control component (6) prompts the triggering of the motor-driven flap arrangement (2) when the operator action criteria are met.

9. A flap arrangement (2) for a motor vehicle (3), the flap arrangement (2) having: a closure element (10) for the motor vehicle (3); a drive assembly (11) associated with the closure element (10), the drive assembly having at least one drive (12) for motor-driven adjustment of the closure element (10); and a radar assembly (1) according to any one of the preceding claims, wherein, The flip cover arrangement (2) is configured to check, based on a predefined operator action criterion, whether there is an operator action performed by the operator (7) on the radar values measured by means of the radar assembly (1) and / or the UWB positioning information measured by means of the radar assembly (1), and to trigger a motor-driven adjustment of the closure element (10) when the operator action criterion is met.

10. The flip arrangement according to claim 9, characterized in that, At least two of the radar antennas (5) of the radar assembly (1) have radiation characteristics that are differently oriented with respect to the flip cover arrangement (2). Preferably, in the assembled state, at least one of the radar antennas (5) has radiation characteristics covering a horizontal line with respect to the motor vehicle (3), and at least one other radar antenna of the radar antennas (5) has radiation characteristics different from the horizontal line and in particular covering a vertical line with respect to the motor vehicle (3).

11. The flip arrangement according to claim 9 or 10, characterized in that, At least one of the radar antennas (5) has radiation characteristics covering a horizontal line with respect to the motor vehicle (3) in the assembled state, and the control assembly (6) of the radar assembly (1) is configured to perform UWB communication with a mobile device (9) associated with the motor vehicle (3) by means of this radar antenna (5).

12. The flip arrangement according to any one of claims 9 to 11, characterized in that, The flip cover arrangement (2) has a Bluetooth module for Bluetooth communication with the mobile device (9), and the flip cover arrangement (2) is configured to trigger a motor-driven adjustment of the closure element (10) based on authentication performed by means of the Bluetooth communication.

13. The flip arrangement according to claim 12, characterized in that, The flip cover arrangement (2) is configured to activate the radar assembly (1) upon successful authentication.

14. A method for operating a flap arrangement (2) of a motor vehicle (3), the flap arrangement (2) having: a closing element (10) for the motor vehicle (3); a drive assembly (11) associated with the closing element (10), the drive assembly having at least one drive (12) for motor-driven adjustment of the closing element (10); and a radar assembly (1) according to any one of claims 1 to 8, wherein, Check, based on a predefined operator action criterion, whether there is an operator action performed by the operator (7) on the radar values measured by means of the radar assembly (1) and / or the UWB positioning information measured by means of the radar assembly (1), and wherein a motor-driven adjustment of the closure element (10) is triggered when the operator action criterion is met.

Images