EP3091156A2 - Method for detecting an actuation - Google Patents

Abstract

The invention relates to a method (100) for detecting an actuating action that can be performed by a user (50) on a door handle unit (10) of a vehicle (1), in particular for opening a movable part (2) of the vehicle (1), wherein the door handle unit (10) has at least one safety sensor unit (30) for detecting the actuating action.

It is provided that the safety sensor unit (30) delivers a detection signal (S) as a function of the detection, wherein the detection signal (S) is evaluated directly by a vehicle-side control device (4) for detecting the actuating action.

Description

The present invention relates to a method for detecting an operation to be performed by a user on a door handle unit of a vehicle according to claim 1. Further, the invention relates to a safety system for a vehicle according to claim 11 and a door handle unit for a vehicle according to claim 15.

It is known from the prior art that door handle units for vehicles have at least one sensor for detecting an actuating action of a user. The detection takes place in particular in an accessible area for a user of the door handle. For this purpose, for example, capacitive sensors are used, which approximate z. B. a hand to operate the door handle detect. For the evaluation of the sensor or the sensors required here, the door handle unit and / or the sensor itself also has an electronic evaluation device. The signals of the sensor are first detected and (pre-) processed by the usually arranged in the door handle evaluation device. For further evaluation, the evaluation device is electrically connected to a vehicle-side control device. On the basis of the output signals of the evaluation device can thus be carried out a detection of the actuating action. If the control device thereby signals the actuation of the door handle unit, functions of the vehicle can be actuated.

A disadvantage of the known solutions is that the reliability and security of the detection and / or detection of the actuating action is often insufficient. The sensors used are prone to incorrect measurements and misdetections, z. B. due to environmental influences, defects of the sensors or the like. In particular, the detection of the actuating action is thereby possibly delayed. To compensate for the incorrect measurements, therefore, a complex evaluation of the sensor is necessary, which z. B. is done by the evaluation device. Also, for example, is often detected by the control device, for example, only a signal from the evaluation device when an actuation action takes place and / or was detected correctly by the sensor. A fault diagnosis by the control device, z. B. a reliable monitoring of the functionality (of the sensors) of the door handle unit is not or only to a limited extent possible and also requires a higher cost. An adaptation of known door handle units to increased safety requirements, for example, according to the ASIL (Automotive Safety Integrity Level) standard, is further also associated with a very high design effort. Thus, the conventional detection of actuating actions in door handle units is not suitable for controlling safety-related functions of the vehicle.

It is therefore an object of the present invention to at least partially overcome the disadvantages described above. In particular, it is an object of the present invention to enable a safe and reliable detection of an actuating action on a door handle unit. Preferably, the cost and the design effort for the realization of such a door handle unit or such a security system should be reduced despite increased security. Furthermore, in particular the comfort for a user is to be increased, since a quick detection enables a speedy unlocking of the vehicle.

The above object is achieved by a method having the features of claim 1, a security system with the features of claim 11 and by a door handle unit with the features of claim 15. Further features and details of the invention will become apparent from the respective dependent claims, the description and the drawings. In this case, features and details that are described in connection with the method according to the invention, of course, also in connection with the security system according to the invention and the door handle unit according to the invention, and in each case vice versa, so that with respect to the disclosure of the individual aspects of the invention always refer to each other or are can.

The object is achieved in particular by a method for detecting an action that can be performed by a user on a door handle unit of a vehicle, in particular for opening a movable part of the vehicle. Here, it is provided that the door handle unit has at least one safety sensor unit for detecting the actuating action, wherein the safety sensor unit delivers a detection signal in response to the detection, wherein the detection signal is evaluated directly and / or directly by a vehicle-mounted control device for detecting the actuating action. The direct and / or immediate evaluation of the detection signal by the vehicle-side control device has the advantage that the detection of the actuating action can be made more reliable and secure. The control device is in particular a central control unit of the vehicle (ECU, English: Electronic Control Unit) or has such. The control device is preferably arranged centrally in the vehicle and is z. B. used for monitoring and / or evaluation of various sensor units and / or other electronics on the vehicle. Such controllers may have increased security functionality to perform the monitoring and / or evaluation and / or control of safety-related functions of the vehicle. For this purpose, it may be necessary, in particular, for the control of safety-relevant functions of the vehicle to be subject to an increased safety requirement for the control (ie, for example, the control device). These safety requirements are, for example, SIL (Safety Integrity Level) or ASIL requirements in accordance with IEC 61508 / IEC61511 standardization. Gone is the Security requirement z. At least the middle and / or highest level of the corresponding standard (eg at least level 1 or 2 or at least level 3 or at least ASIL A or at least ASIL B or at least ASIL C or ASIL D) ). It is conceivable that the security requirement for one or more sensor units (in particular safety sensor units) of the vehicle or the door handle units of the vehicle is necessary. The security requirement needs in this case only centrally for z. B. only a single connected to the sensor units control device of the vehicle to be implemented. Thus, the security functions can be inexpensively implemented centrally for various tasks in the control device. A decentralized training of the safety functionalities, z. B. by a modified evaluation device in the door handle unit to achieve an error-free detection, however, is correspondingly associated with higher costs and structurally complex.

The detection of the actuating action preferably comprises initially the detection of the actuating action, in particular by at least one sensor unit of the door handle unit, in particular by the safety sensor unit and / or a primary sensor unit. As part of the detection takes place, for example, a measurement of physical variables, such as a change in capacity and / or a magnetic field in the door handle unit. Subsequently, in particular, an evaluation of the detection signal, whereby an interpretation of the detection is possible. Thus, conclusions can be drawn by the evaluation conclusions on the presence of an actuating action. In this case, the detection signal comprises information, for example measured values and / or data and / or a voltage or current profile, which were determined as a function of the monitoring or detection of the actuating action by the safety sensor unit. These measured values and / or data and / or further information of the detection signal make it possible by an interpretation and / or by an evaluation (or by an interpretation, which is performed by the evaluation), the detection of the actuating action. For evaluation purposes, the information can, for example, be related to given data, values and / or courses and / or compared. It may be provided that a predetermined course, in particular a temporal and / or geometric course, of the information is detected for the detection of the actuating action. The geometric course is, for example, a trajectory of the by the act of action caused movement, z. B. the movable part. For this purpose, for example, arithmetic operations and / or interpolation can also be used by the control device. In the case of the safety sensor unit, it may be provided that the detected physical variable and / or the measured course of the physical variable, for. B. the course of a change in the magnetic field and / or a course of the magnetic field strength, directly detectable by the vehicle-mounted control device and / or can be controlled and / or evaluated. In particular, in common door handles, however, the detected physical quantity and / or the corresponding course of the detected physical variable of the primary sensor unit, for. B. the course of a capacitive change, only indirectly by the control device and / or directly on the door handle side evaluated by an evaluation and / or controllable.

The expression "vehicle-side" in the context of the invention refers in particular to the fact that the control device, in particular a control device, is arranged spatially outside the door handle unit and / or outside the movable part and / or outside any door handle unit of the vehicle. The door handle unit includes, for example, the door handle and / or the door handle housing and / or the door handle electronics and / or the handle body and / or all door handle components, which z. B. are also located in the region of the movable part (eg., Within and on the door / the door handle recess). Preferably, the control device is in this sense on the vehicle side, that is arranged in particular centrally in the vehicle. In this case, the control device z. B. connected via a bus system of the vehicle with other electronic components and / or the like. Furthermore, a connection of the control device to an engine management system may also be provided, in order, for. B. in the detection of an actuating action to transmit information and / or control commands to the engine management system. In this case, the control device is in particular connected to a CAN bus system (Controller Area Network) and / or to a LIN bus system (Local Interconnect Network). The control device is, for example, connected via this bus system and / or via further electronic or electrical connections and / or via electrical plug connections to the safety sensor unit in the door handle unit and / or to a plurality of safety sensor units respectively in different door handle units of the vehicle. The control device can be z. B. also have a plurality of electronic modules, which are preferably combined as a structural unit. Next, the Control device may be connected to other sensor units and / or components of the vehicle, in particular devices and / or sensors for monitoring the speed, the speed, the pressure and / or the temperature of the vehicle. Further, it is conceivable that the control device (free or limited) is configured programmable. Thus, the control device z. B. a microcontroller and / or a digital signal processor and / or the like. Furthermore, if appropriate, an electronic comparison unit (in particular the control device) may be provided in order to determine the detected measured values of the sensors and / or the detection signal with predetermined values z. B. to compare the detection of the actuating action.

The connection of the control device with the safety sensor unit and / or with all safety sensor units of the vehicle is preferably carried out directly. The term "direct" preferably refers to the fact that a direct evaluation and / or monitoring of the sensor unit, in particular of the sensor, is possible by the particular electrical and / or physical and / or optical and / or electronic connection. For connection, for example, electrically conductive cables and / or lines and / or optical light guides or the like are used. For this purpose, it is provided, for example, that (in normal operation) a signal of the safety sensor unit can always be detected by the control device. In contrast, the signal from other sensor units z. B. possibly be discontinuously output via an evaluation device, so that no permanent monitoring is possible. Furthermore, the (measured) signal detected by the sensor unit, in particular the safety sensor unit, may preferably be z. B. can be evaluated immediately. The evaluation of the signal, in particular of the detection signal, can take place, for example, without prior change of the signal and / or the measured values. Such a previous change takes place, for example, in a primary sensor unit by an evaluation device, before the (changed) signal is forwarded by the evaluation device to the control device. In particular, the information content of the signal is significantly changed by the evaluation device, ie by an intermediate evaluation. It is conceivable, however, that an insignificant change in the detection signal due to the transmission between the safety sensor unit and the control device takes place. However, this does not significantly alter the information content. By contrast, an interpretation of the signal can already be carried out, for example, by the intermediate evaluation. In this case, for example, from a Indirect and / or indirect evaluation of the signal by the vehicle-mounted control device are spoken. For indirect or indirect evaluation, the control device is then, for example, electrically connected to the evaluation device and thus does not directly or directly receive the signal. Such an evaluation is, for example, provided for a primary sensor unit, wherein the signal is then a primary detection and / or detection signal of the primary sensor unit. For indirect or indirect evaluation, the evaluation device initially detects the signal (direct and immediate), evaluates it, or changes the information content and transmits an evaluated signal, eg. B. an evaluated primary detection signal to the control device. This allows only a limited error monitoring by the control device. In contrast, in the direct or immediate evaluation by the control device, a fault of the safety sensor unit can be detected directly. Thus, the detection of the actuating action can meet higher security requirements.

Further, the door handle unit is, for example, as an outside door handle of the vehicle and / or in the side area of the vehicle, for. B. on the doors and / or in the rear of the vehicle, z. B. on the tailgate, arranged. The movable part is thus at least one door of the vehicle and / or the tailgate. In addition, as a movable part, for example, a movable and / or pivotable door handle of the door handle unit can be understood. It is also conceivable that the door handle unit comprises only the sensor for the door handle and / or z. B. is arranged in the region of the door handle. The vehicle is, for example, a motor vehicle, in particular a passenger car and / or a truck. Thus, the inventive method includes a variety of applications.

It is further conceivable that the door handle unit also has further sensor units, in particular a primary sensor unit and / or further safety sensor units. It may be provided that only the safety sensor units are connected directly and / or directly to the control device of the vehicle. In this way, for. B. the increased safety requirements, in particular according to ASIL and / or according to IEC61508 and / or according to ISO26262, for the safety sensor unit or for the detection of the actuating action are realized inexpensively. Accordingly, the other sensor units of the door handle unit, in particular the primary sensor unit, unlike the safety sensor unit, preferably only have an indirect and / or indirect connection to the control device for indirect and / or indirect evaluation by the control device. The evaluation takes place in these cases, for example, directly and / or directly by an evaluation device of the door handle unit. The evaluation device is, for example, designed as a logic element and / or microprocessor and / or microcontroller and / or digital signal processor or the like.

Furthermore, provision may be made for the safety sensor unit to be insensitive to humidity and / or insensitive to weathering. In other words, the safety sensor unit performs a humidity-insensitive and / or weather-insensitive (and thus a substantially error-free) detection of the actuating action regardless of external disturbing influences, such as high humidity and / or rain and / or the like. In contrast, the primary sensor unit is particularly susceptible to interference for such external interference. Thus, the primary sensor unit z. B. configured as a capacitive sensor, which detects a change in capacitance and therefore even with small capacity changes (as through rain) provides erroneous signals. Therefore, preferably an evaluation device of the door handle unit must be provided which detects such errors and a corrected signal z. B. supplies to the control device. The safety sensor unit is, for example, designed as a Hall sensor, and therefore reacts z. B. exclusively on the magnetic field strength of an external magnetic field. The external disturbances do not normally affect the magnetic field in the region of the door handle unit, so that no error analysis and correction by the evaluation device must be made. In this way, a reliable detection of the actuating action can be carried out at low cost.

It is also conceivable that the safety sensor unit for detecting the actuating action monitors in particular a mechanical movement and / or an opening operation of the door handle unit. For this purpose, the door handle unit, for example. Have a door handle, which is designed to be movable and / or pivotable. Optionally, the safety sensor unit may also be arranged on the movable part, for. B. outside the door handle unit, and / or movement of the movable part, for. B. a door and / or the door handle monitor. The opening movement affects physical variables, eg. For example, a magnetic field is changed. For this purpose, at and / or in the region of the door handle unit and / or the movable part z. B. a detection means may be provided.

The detection means comprises, for example, a permanent magnet, parts of a light barrier, an electronic or optoelectronic sensor or receiver or the like. The actuating action and / or the movement then activates the detection means, ie, for example, moves or influences them (eg also a force action and / or the interruption of the light barrier and / or the increase of the distance between the detection means and the safety sensor unit). This activation is detected by the safety sensor unit. Accordingly, the safety sensor unit can, for example, as a transmitter and / or receiver and / or magnetic field sensor and / or Hall sensor and / or electronic switch and / or electronic contact and / or reed contact and / or optocoupler and / or light barrier and / or acceleration sensor and / or as ASIL-mandatory sensor or control device and / or be designed as a capacitive sensor and / or as a mechanical switch and / or as a continuous signal generator. The continuous signal transmitter has no (ASIL relevant) logic element and can be evaluated directly by the control device, in particular without intermediate evaluation by the logic element. Further, in particular, the steady signal generator continuously outputs a signal in normal operation independently of the detection. The safety sensor unit preferably detects a change in a physical quantity, e.g. B. the magnetic field, by an actuation and / or through an opening of the door handle unit. Due to the direct evaluation of the safety sensor unit or of the detection signal of the safety sensor unit by the control device, a fault and / or a failure of the safety sensor unit can be detected immediately and immediately. Furthermore, it can also be provided that a fault and / or a failure of the further sensor units of the door handle unit, in particular the primary sensor unit not immediately and / or directly, but z. B. time delay or never (by the control device) are detectable. To increase the security, it is therefore provided that the control device detects the detection signal, for example, also independent of the evaluation device of the door handle unit. It is also conceivable that a direction information of the actuating action can be detected by the safety sensor unit (possibly in contrast to the primary sensor unit) and evaluated by the control device. For detecting the direction information, it may further be provided that at least two safety sensor units (eg, two-substrate Hall sensors) are provided, which are arranged, for example, spatially spaced apart from one another.

It is further conceivable that by evaluating the detection signal, in particular by the control device of the vehicle, always a state of the safety sensor unit can be evaluated. So it is conceivable that z. B. both in a performance and detection of the actuating action (positive detection signal) and in the absence of the actuating action (negative detection signal), a detection signal and / or information of the detection signal can be evaluated by the control device. In particular, this positive and / or negative detection signal differs from a (detection) signal and / or from an information of the detection signal in the event of a fault and / or failure of the safety sensor unit. It is thus possible by the control device by the evaluation of the detection signal, a detection of the actuating action and in particular a monitoring of the safety sensor unit. The monitoring makes it possible to detect a fault and / or a failure and / or other deviating from normal operation state of the safety sensor unit.

Furthermore, the safety sensor unit may, for example, be integrated in the door handle unit in such a way that an electric current flows through it during normal operation. The arrangement of the safety sensor unit is effected in particular in the region of a magnetic field and / or in the region of a detection means whose distance-dependent effect can be detected by the safety sensor unit. Furthermore, the safety sensor unit can deliver a detection signal dependent on this detection and / or the distance to the detection means and / or from the magnetic field and / or from the temperature. The safety sensor unit may preferably be integrated in an electronic circuit, and possibly with other electronic components z. B. be connected to the signal amplification and / or analog-to-digital conversion and / or signal processing. Thus, a previous signal processing may possibly be provided for the output of the detection signal, so that the direct and immediate evaluation by the control device refers to the fact that monitoring of the safety sensor unit is possible by the control device. For this purpose, it is provided, for example, that a signal can always be detected by the safety sensor unit by the control device.

The safety sensor unit is preferably designed as a magnetic field sensor, in particular a Hall sensor, whereas the other sensor units of the door handle unit, in particular a primary sensor unit, preferably designed as a capacitive sensor. The further sensor units or the capacitive sensor unit supplies via an evaluation device, for example, only a signal when an actuation action is performed. For example, the safety sensor unit provides a signal even if no operation is performed. In particular, the magnetic field sensor always provides a signal even with a constant magnetic field. This reduces costs while providing redundancy to increase security.

It may be advantageous if, in the context of the invention, the safety sensor unit supplies the detection signal at least as a continuous or multistage digital or analog signal or as a measurement signal, the measurement signal being in particular proportional to and / or dependent on a physical quantity measured by the safety sensor unit , As a result, the advantage is achieved that increased security for detecting the actuating action can be ensured. A multi-stage, ie at least three-stage, and thus in particular not two-stage or binary, press signal has the advantage that in addition to the detection of the actuating action can also be done monitoring the safety sensor unit. In this case, the measuring signal is preferably an electrical and / or electronic signal, which comprises measured values determined during the detection of the actuating action. For example. the voltage of the measuring signal is proportional to and / or dependent on the measured values of the measured physical variable detected by the safety sensor unit. In this case, the safety sensor unit is in particular designed such that a physical quantity such as a capacitance and / or a magnetic field strength and / or an electromagnetic field and / or a mechanical action or force can be measured. The physical size is thereby preferably measured in the region of the door handle unit by the safety sensor unit. Particularly preferably, the measurement and / or the output of the detection signal can take place continuously as a function of the measurement. In other words, especially during the operation of the safety sensor unit, no detection signal is never output. In this case, the signal transmitted by the safety sensor unit to the control device is neglected as a "delivered signal" or "delivered detection signal", neglecting the influence of the transmission. This is thus in particular the signal underlying the transmitted signal (eg the measuring signal). It may be further provided that a value-continuous and / or a continuous-time and / or a changing signal is always output as a detection signal in normal operation. In particular, a detection signal is output even if the physical quantity underlying the measurement does not change. As a result, monitoring of the safety sensor unit by the control device is always possible.

In the context of the invention, it may preferably be provided that the control device electronically evaluates and / or interprets the detection signal in such a way that a detection signal dependent on the detection signal is produced with a lower information content than the detection signal, in particular a binary signal. As a result, the advantage is achieved that a central evaluation by the control device for detecting the actuating action can take place. This increases the safety and reliability and reduces the cost. At the same time, it is conceivable for a primary detection and / or detection signal of the primary sensor unit to be electronically evaluated and / or interpreted by an evaluation device of the door handle unit in such a way that an evaluated primary detection and / or detection signal depends on the primary detection and / or detection signal less information content than the primary detection and / or detection signal, in particular a binary signal arises. The detection signal may in particular be a multistage and / or analog signal, wherein the detection signal is electronically evaluated by the control device in such a way that a one-or multi-level detection signal dependent on the detection signal is produced. This resulting detection signal may, for example, have a smaller number of stages than the detection signal. The detection signal preferably comprises the information about the present actuating action after interpretation by the control device. Optionally, it can be provided that the detection signal can have only two values, wherein, for example, a first value signals positive detection of the actuation signal (i.e., the actuation action is performed) and a second value signals a negative detection (absence of the actuation action).

In a further possibility, it can be provided that the detection of the actuating action by the safety sensor unit and / or the measurement performed for detection by the safety sensor unit is evaluated and / or controlled directly and / or directly by the control device. Thus, on a complex Transmitter be dispensed within the door handle unit. It is z. B. also conceivable that a pulsed evaluation and / or control of the safety sensor unit is carried out by the control device. For example, the safety sensor unit can be operated in a pulsed manner and output a detection signal in temporal intervals in accordance with the pulsed activation. As a result, an energy-saving and / or reliable operation can be ensured.

In a further possibility, it may be provided that, depending on the detection signal and / or on a detection signal and / or on the detection of the safety sensor unit, a particularly safety-relevant function of the vehicle, in particular an emergency stop of the vehicle, in particular by the control device designed as an emergency stop device is carried out. It can also be provided that the control device is connected to an emergency stop device, in particular an emergency stop electronic. The actuating action may, for example, be grasping and / or pulling on the door handle of the door handle unit. It is also conceivable that the actuating action is an approximation to the door handle unit. The operation may be performed by the user with the aim of stopping the vehicle from moving. Thus, it is conceivable that in an emergency situation, a movement of the vehicle from the outside by the user must be prevented. This is necessary, for example, when the user of the vehicle has forgotten to put on the handbrake after getting out and wants to stop the rolling vehicle. Further, an intervention of the user by the actuating action in an automatic parking of the vehicle is conceivable to interrupt the parking maneuver from the outside. The safety-relevant function may be, for example, a control of the brakes of the vehicle and / or an engine stop and / or a corresponding control of the drive to stop the vehicle. In this way, the security can be significantly increased.

Furthermore, it is conceivable that the performance of the function of the vehicle, in particular as a function of the detection signal and / or of a detection signal and / or of the detection of the safety sensor unit, only takes place if a further condition exists. The further condition is z. As a statement, for. B. by a sensor of the vehicle that the driver's seat is not occupied. In this way, for example, the pulling on the door handle unit as an actuating action to prevent the rolling of the vehicle when the vehicle or the driver's seat is not occupied, and in particular an emergency stop are performed.

In a further possibility, it can be provided that a vehicle-mounted monitoring device is provided, wherein the monitoring device in particular always and / or time regularly monitors the safety sensor unit, in particular the operating state and / or the operability of the safety sensor unit performs. The vehicle-mounted monitoring device may, for example, be integrated in the safety device or be formed separately from the safety device. The monitoring, in particular as a scan, preferably temporally regularly, z. B. at intervals of a maximum of one tenth of a second or between a tenth and a second or a maximum of one second or a maximum of 10 seconds or a maximum of 100 seconds. For monitoring, the monitoring device may, for example, be connected to the safety sensor unit such that an (electrical) transmission of the detection signal and / or an evaluation of the detection signal by the monitoring device can be carried out. By monitoring the advantage is achieved that a malfunction of the safety sensor unit is detected by the monitoring device. It is conceivable that upon detection of a malfunction of the safety sensor unit, the monitoring device initiates a corresponding safety function of the vehicle. Thus, for example, the operation of the vehicle can be set and / or a warning message can be output for the user.
In addition, it may be advantageous in the context of the invention that the monitoring device carries out the monitoring in such a way that an operating point of the safety sensor unit is determined, in particular by comparing at least one output signal value of the safety sensor unit with at least one electrical voltage and / or current value of the safety sensor unit , It is also conceivable for the monitoring to correlate an output signal with the output signal value of the safety sensor unit and / or a voltage and / or current signal with the voltage and / or current value of the safety sensor unit and / or the detection signal of the safety sensor unit. or evaluated separately. This is a fault diagnosis by the Surveillance very reliable possible. It is also conceivable that by monitoring z. B. a cable break and / or a malfunction of the safety sensor unit is detected. It may further be provided that monitoring of the safety sensor unit is performed by the monitoring device in such a way that a temporary malfunction of the safety sensor unit is detected. Such a temporary malfunction has, for example, temporarily incorrect measured values and thus a faulty detection signal result. The corresponding information by the monitoring device can then, for example, be used to prevent an evaluation of the detection signal by the control device.

It is further conceivable that the electronic components, i. H. in particular the safety sensor unit and / or the evaluation device and / or the control device and / or the monitoring device, thereby z. B. microcontroller and / or integrated circuits and / or are formed as such. Furthermore, it can be provided that the electronic components have pins and / or contacts via which signals, for example the detection signal, are transmitted.

In addition, it may be advantageous in the context of the invention that a monitoring device and / or the control device make the detection signal plausible, for which purpose in particular a first detection signal from a first safety sensor unit and a second detection signal from a second safety sensor unit is evaluated. In this case, the door handle unit, ie in particular a single door handle unit, has at least two or at least three safety sensor units. This redundancy further enhances security. A plausibility check of the detection signal can preferably take place in that a redundant detection and / or evaluation of the detection signal takes place. It is conceivable that the first safety sensor unit and the second safety sensor unit are arranged such. B. apart from each other that a course of the first detection signal and the second detection signal must be made in a certain way. This is meant in particular that z. B. in the actuating action, such as an opening movement of the door handle unit, due to and depending on the movement trajectory or the position of the door handle, the safety sensor units are triggered. At a first position or at a first time of Acting action is thereby, for example, the first safety sensor unit triggered (and thus reports by a positive detection signal the actuating action). Subsequently, for example, at a second position and / or at a second time of the actuating action, an activation of the second safety sensor unit takes place.

In addition, it may be advantageous in the context of the invention that a primary sensor unit is provided, and by the primary sensor unit, a primary detection and / or detection of the actuating action takes place, whereas the detection of the actuating action by the safety sensor unit as a redundant detection takes place subordinate. Optionally, it can also be provided that the safety sensor unit is used to check the plausibility of the detection and / or detection of the primary sensor unit. The primary use of the primary sensor unit for detecting and / or detecting the actuating action is, for example, useful if the primary sensor unit has, for example, an extended functionality and / or a better sensitivity for the detection and / or detection.

According to a further advantage, it may be provided that a primary sensor unit is provided, and the primary sensor unit outputs a primary detection and / or detection signal in response to a primary detection and / or detection, wherein in particular the primary detection and / or detection signal only indirectly the control device is evaluated in particular via an evaluation device. In particular, the detection signal already has an interpretation of the measured values of the primary sensor unit as information content. This interpretation is, for example, caused by an electronic evaluation by the evaluation device. In contrast, the detection signal does not have such an interpretation of the measured values of the safety sensor unit. However, in contrast to the example of the evaluation of the detection signal, the evaluation of the detection signal allows a more comprehensive determination of the state or a detection of an error in the detection and / or detection.

According to a further advantage, it can be provided that a fault diagnosis by the vehicle-side control device takes place through the evaluation of the detection signal of the safety sensor unit. Further, it is also conceivable that by the evaluation of the detection signal by the monitoring device Error diagnosis is carried out. The fault diagnosis allows, for example, the detection of an operating failure and / or faulty operation of the safety sensor unit. It is also conceivable that a fault diagnosis is likewise carried out by an evaluation device, the evaluation device for this purpose evaluating a primary detection and / or detection signal. As a result of the fault diagnosis of the evaluation device, erroneous operation and / or a malfunction of the primary sensor unit can thus be detected. As a result, the reliability and safety for operation of the sensor units of the door handle unit is significantly increased.

The invention likewise relates to a safety system for detecting an actuating action which can be carried out by a user on a door handle unit of a vehicle, in particular for opening a movable part of the vehicle, comprising the door handle unit. It is provided that the door handle unit has at least one safety sensor unit for detecting the actuating action, wherein a detection signal is available by the safety sensor unit depending on the detection, wherein the detection signal directly and / or directly by a vehicle-side control device for detecting the actuating action is evaluable. Thus, the security system according to the invention brings the same advantages as have been described in detail with reference to a method according to the invention. In addition, the security system may be suitable to be operated according to a method according to the invention. The safety system according to the invention has, for example, a door handle unit according to the invention and / or a safety sensor unit and / or a primary sensor unit and / or a control device and / or an evaluation device.

It is also advantageous if, in the context of the invention, a primary sensor unit is provided for the primary detection and / or detection of the actuating action, wherein preferably the safety sensor unit is designed as a secondary sensor unit for the redundant, redundant detection of the actuating action. In this case, the primary sensor unit may, for example, be arranged such that the primary action is initially triggered by the actuating action. It may further be provided that the secondary sensor unit is arranged on the door handle unit such that the actuating action only subordinate the safety sensor unit to the door handle unit Primary sensor unit triggers. Optionally, it is also conceivable that the actuating action causes the primary sensor unit and / or the safety sensor unit to be triggered almost simultaneously. The subordinate and / or redundant detection of the actuating action can, for example, also take place in that the secondary sensor unit is subordinated and / or redundantly evaluated to the primary sensor unit. As a result, a flexible and application-dependent control and evaluation of the sensor unit is possible.

In addition, it is advantageous if, in the context of the invention, the primary sensor unit has a primary output for outputting the primary detection and / or detection signal, wherein the primary output is in particular electrically connected to an evaluation device, wherein preferably the safety sensor unit has a secondary output for outputting the redundant detection signal wherein the secondary outlet is preferably electrically connected to the control device. The primary output may, for example, be electrically connected to an electrical line, in particular a cable made of an electrically conductive material, and / or metal to a corresponding input of the evaluation device. The safety sensor unit can, for example, have a connection of the secondary output to an electrical line and / or to a bus system of the vehicle, wherein in particular information (for example the detection signal) is transmitted to the control device via the secondary output. This enables a secure and reliable exchange of information.

Another advantage can be achieved within the scope of the invention if the primary sensor unit has an evaluation device and / or is electrically connected to the evaluation device, wherein in particular the evaluation device is electrically connected to the control device. Preferably, the evaluation device may be integrated in the primary sensor unit, wherein the primary sensor unit with the evaluation device z. B. forms a compact component. The primary sensor unit and / or the evaluation device and / or the electrical connection means of the primary sensor unit and the evaluation device are, for example, within the door handle unit, z. B. in a housing arranged. The arrangement can be made such that the primary sensor unit and / or the evaluation device and / or the connecting means safely and reliably against external influences and / or protected from moisture. For example, a seal of the door handle unit with a potting compound is conceivable to reliably seal the housing.

A further advantage can be achieved in the context of the invention if a primary detection unit of a primary sensor unit can preferably be evaluated by an evaluation device, and a primary detection signal, in particular as an evaluated primary detection signal, can be determined by the evaluation of the primary detection signal and / or can be output by the evaluation device , It is also conceivable that an evaluation device is provided for each door handle unit and / or for each primary sensor unit of the vehicle and / or this is arranged centrally in the respective door handle units. As a result, for example, a further evaluation or redundant evaluation can already be integrated in the door handle unit.

Furthermore, it can be provided in the context of the invention that the evaluation device has an evaluation output for output of an evaluated primary detection signal to the control device, wherein in particular the evaluated primary detection signal is supplied as a digital signal in response to the detected actuation action. The primary sensor unit may be formed, for example, as a capacitive sensor or the like. In this case, the primary sensor unit can be designed such that the output measuring signal for detecting the actuating action must be evaluated by a further logic element, in particular by the evaluation device. The Z. B. by the evaluation device and / or by the logic element evaluated primary detection signal is, for example, a digital signal. This allows a simple evaluation of the primary sensor unit for detecting the actuating action.

Furthermore, it can be provided in the context of the invention that the safety sensor unit is designed as a Hall sensor and / or the like, wherein the detection signal is available as an analog continuous signal to the control device. In this case, the safety sensor unit may, for example, be embodied as a single-substrate and / or two-substrate sensor and thus have, for example, at least two or at least three Hall sensors. It is likewise conceivable for the safety sensor unit to be designed as a reed contact and / or as an acceleration sensor and / or as an optical sensor (in particular an optical sensor, optionally with a transmitter and receiver for optical signals formed separately from one another). and / or is designed as a mechanical switch or the like. The safety sensor unit may preferably comprise electronic components, in particular an analog-to-digital converter and / or microprocessors and / or amplifier units. These components can, for. B. be used to convert the detected by the security sensor unit analog signal for transmission as a detection signal in a digital form and / or amplify. As a result, a performance of the actuating action on the door handle unit can be detected reliably.

Likewise provided by the invention is a door handle unit for a vehicle for opening a movable part of the vehicle. In this case, it is provided that the door handle unit can be actuated by an actuation action that can be carried out by a user on the door handle unit. The door handle unit has a safety sensor unit for detecting the actuating action, wherein a detection signal is available by the safety sensor unit in response to the detection, wherein the detection signal is directly and / or directly evaluated by a vehicle-mounted control device for detecting the actuating action. Thus, the door handle unit according to the invention brings about the same advantages as have been described in detail with reference to a method according to the invention and / or a safety system according to the invention. In addition, the door handle unit may be suitable to be operated according to a method according to the invention. In particular, the door handle unit according to the invention is used in a security system according to the invention. It is conceivable that the vehicle has at least two and / or three and / or four door handle units, each having at least one safety sensor unit and / or in each case at least one primary sensor unit. It may be possible that the central control device of the vehicle z. B. is connected via electrical lines and / or a bus system with each safety sensor unit of the respective door handle units of the vehicle and / or with each evaluation device of the respective door handle units of the vehicle. Thus, the control device can, for example, as a central vehicle control with a first and / or second and / or third and / or fourth and / or fifth safety sensor unit, for. B. in each case at different areas of the vehicle, such as in the rear area and / or on opposite side areas of the vehicle to be connected for evaluation. Thus, an operation can be detected on different door handle units of the vehicle.

Figur 1

eine schematische Darstellung eines erfindungsgemäßen Sicherheitssystems und einer erfindungsgemäßen Türgriffeinheit,

Figur 2

eine weitere schematische Darstellung eines erfindungsgemäßen Sicherheitssystems und einer Türgriffeinheit,

Figur 3

eine schematische Schnittansicht einer erfindungsgemäßen Türgriffeinheit,

Figur 4

eine weitere schematische Schnittansicht einer erfindungsgemäßen Türgriffeinheit,

Figur 5

eine schematische Ansicht auf Teile einer erfindungsgemäßen Türgriffeinheit,

Figur 6

eine schematische Darstellung eines erfindungsgemäßen Verfahrens zur Visualisierung von Verfahrensschritten und

Figur 7

eine schematische Darstellung eines erfindungsgemäßen Sicherheitssystems.

Further advantages, features and details of the invention will become apparent from the following description in which, with reference to the drawings, embodiments of the invention are described in detail. The features mentioned in the claims and in the description may each be essential to the invention individually or in any desired combination. Show it:

FIG. 1

a schematic representation of a security system according to the invention and a door handle unit according to the invention,

FIG. 2

a further schematic representation of a security system according to the invention and a door handle unit,

FIG. 3

a schematic sectional view of a door handle unit according to the invention,

FIG. 4

a further schematic sectional view of a door handle unit according to the invention,

FIG. 5

a schematic view of parts of a door handle unit according to the invention,

FIG. 6

a schematic representation of a method according to the invention for the visualization of method steps and

FIG. 7

a schematic representation of a security system according to the invention.

In the following figures, the identical reference numerals are used for the same technical features of different embodiments.

In FIG. 1 schematically a security system 200 according to the invention is shown, wherein a vehicle 1 is shown with a door handle unit 10 according to the invention in the side region of the vehicle 1. The door handle unit 10 according to the invention can of course also be arranged on an opposite side or in the rear area of the vehicle 1. Next is also an arrangement on a driver's door and / or a passenger door of the vehicle 1 possible. In the embodiment shown, the door handle unit 10 is made by an actuating action by a user 50 to a movable part 2, z. As the door to open. For this purpose, the user 50, for example, pulls on a handle 11 of the door handle unit 10. It is conceivable that for the opening of the movable part 2, an activation of a locking device of the vehicle 1 is first necessary. This activation can take place, for example, by an activation device 51 by the user 50. The activation device 51 is, for example, designed as an identification transmitter. For this purpose, a signal is transmitted, for example, encrypted by the activation device 51 to the vehicle 1. Furthermore, this signal of the activation device 51, for example, can also be used to activate a further function of the vehicle 1. Such a function is, for example, an automatic parking function, in which an automatic movement of the vehicle 1 takes place. For this locomotion of the vehicle 1 to be stopped by the user 50 in an emergency, it is possible, for example, for the user 50 to actuate the door handle unit 10 by the actuating action, as in FIG FIG. 2 is shown. The actuating action is then detected at least by a safety sensor unit 30 of the door handle unit 10.

In FIG. 3 a further schematic view of a security system 200 according to the invention is shown. In this case, various components of the door handle unit 10 are shown schematically, which are arranged within the door handle unit 10 and partly directly and partly indirectly connected to a control device 4 of the vehicle 1. The control device 4 is, for example, a part of the automotive electronics and / or designed as a central control unit of the vehicle 1. Therefore, it is conceivable that the control device 4 in addition to the electrical connection shown with an evaluation device 40 and a safety sensor unit 30 is still connected to other components of other door handle units 10 of the vehicle 1. It can be clearly seen that the connection to the safety sensor unit 30 is direct and / or direct. The electrical connection is shown purely schematically by a dashed line. By contrast, the connection to a primary sensor unit 20 in the door handle unit 10 is made only indirectly and / or indirectly via an evaluation device 40. In other words, the control device 4 for evaluating the primary sensor unit 20 is exclusively indirectly and / or indirectly with the primary sensor unit 20, and in particular directly and / or directly with a Evaluation device 40 of the door handle unit 10 is connected. Next, the evaluation device 40 is electrically z. B. directly and / or directly connected to the primary sensor unit 20. The connection takes place, for example, via a primary output 20.1 via an electrical primary line 20.2, which, for example, is designed as an electrical cable. The direct and / or direct connection of the safety sensor unit 30 with the control device 4 via a secondary output 30.1 of the safety sensor unit 30. In this case, the electrical signals, ie in particular the detection signal S transmitted through an electrical secondary line 30.2 of the secondary output 30.1 to the control device 4. It can also be provided that the electrical lines shown, in particular the primary line 20.2 and / or the secondary line 30.2, have at least two and / or a plurality of electrical lines. The electrical cables can be z. B. also serve to power the sensor units of the door handle unit 10 and / or for the transmission of further signals. The primary sensor unit 20 and / or safety sensor unit 30 are arranged in such a way in the door handle unit 10 and / or a door handle 11 of the door handle unit 10 that a detection and / or detection of the actuating action of the user 50 can be performed. The actuating action serves to move a movable part 2, such as the door or the handle 11 itself. For detecting the actuating action, it is sufficient, for example, to approximate the hand of the user 50 and / or a force and / or an actual movement of the movable part 2 (eg in the direction of the in FIG. 3 shown arrow) to detect and / or detect. In order to ensure a safe and reliable operation of the door handle unit 10 and the sensor units, the control device 4 is also electrically connected to a monitoring device 6. The electrical connection also permits, for example, a transmission of the detection signal S from the control device 4 to the monitoring device 6. This makes it possible to monitor, in particular, the safety sensor unit 30 by the monitoring device 6.

In FIG. 4 a further embodiment of a door handle unit 10 according to the invention and a security system 200 according to the invention is shown. It may be possible for the control device 4 to perform an evaluation of at least one safety sensor unit 30 and in particular at least two safety sensor units 30 directly and / or directly. The two or more Safety sensor units 30 are arranged, for example, in the door handle unit 10 and / or on the door handle unit 10 such that an actuating action of the user 50 on the door handle unit 10 can be detected redundantly. Optionally, it is also conceivable that the safety sensor units 30 are arranged such that a first safety sensor unit 30a can detect a first course of the actuating action and a second safety sensor unit 30b can detect a second course of the actuating action. For example For example, if the actuating handle is to pull out the door handle 11 of the door handle unit 10 (eg in the direction of the arrow), the first safety sensor unit 30a can detect a first position and the second safety sensor unit 30b can detect a second position of the door handle 11 during this movement. The detection takes place, for example, by differently formed magnetic fields on the door handle unit 10, which are detected by a magnetic sensor and / or Hall sensor designed as a safety sensor unit 30. Thus, for example, the direction of movement of the door handle unit 10 can be detected in the actuating action. Next is also in FIG. 4 it can be seen that the evaluation device 40 can be integrated in the primary sensor unit 20. Accordingly, although the control device 4 is then directly electrically connected to the primary sensor unit 20, nevertheless, an evaluation of the primary sensor unit 20 by the control device 4, in contrast to the evaluation of the safety sensor unit 30 only indirectly and / or indirectly. This has the reason that the signal of the primary sensor unit evaluated by the control device 4 is influenced and / or output at least by the evaluation device 40.

In FIG. 5 a further embodiment is shown, in which case the first safety sensor unit 30a and the second safety sensor unit 30b are directly electrically connected to the monitoring device 6 and thus monitoring and / or evaluation of the first safety sensor unit 30a and the second safety sensor unit 30b directly and / or directly by the monitoring device 6 takes place in addition to the control device 4.

In FIG. 6 schematically a method 100 according to the invention is visualized. In this case, according to a first method step 100.1, a primary detection and / or detection of the actuating action is carried out by a primary sensor unit 20. In a second method step 100.2, a redundant and / or secondary detection and / or Detection of the actuating action performed by a safety sensor unit 30. According to the third method step 100.3, the detection signal S of the safety sensor unit 30 is evaluated directly and / or directly by a control device 4, which is arranged outside the door handle unit 10 on the vehicle side.

In FIG. 7 schematically the construction and the signal transmission of a security system 200 according to the invention and / or a door handle unit 10 according to the invention are shown. It is envisaged that z. B. primarily a primary sensor unit 20 transmits a primary detection and / or detection signal PS to an evaluation device 40 of the door handle unit 10. As a result, the primary detection and / or detection signal PS is evaluated directly and / or directly by the evaluation device 40. Subsequently, the evaluation device 40 outputs an evaluated primary detection signal AS to a control device 4. In this case, the evaluated primary detection signal AS in particular has a different information content to the primary detection and / or detection signal PS. In contrast, the evaluation of the safety sensor unit 30, in particular a first safety sensor unit 30a and a second safety sensor unit 30b directly and / or directly by the control device 4. For this purpose, the detection signal S, ie, a first detection signal S1 from the first safety sensor unit 30a and a second detection signal S2 of the second safety sensor unit 30b, z. B. transmitted via electrical lines to the control device 4. Of course, the control device 4 may also be connected to other safety sensor units 30 and accordingly evaluate further detection signals S. In contrast to the evaluated primary detection signal AS, an evaluation by an evaluation unit 4.1 must first take place for the detection signal S by the control device 4. It is conceivable that other electronic components of the control device 4 may be provided. This is, for example, a data memory 4.2, which z. B. has a predetermined evaluation scheme that can be read by the evaluation unit 4.1. The pre-stored data of the data memory 4.2, which is embodied in particular as a non-volatile data memory 4.2, are adapted to the specific safety sensor units 30 of the vehicle 1, for example. Furthermore, it is conceivable that the detection signal S can also be evaluated by a monitoring device 6 of the control device 4. This is in FIG. 7 represented by a dashed line. The evaluated primary detection signal AS from the evaluation device 40 and the evaluated by the control device 4 detection signal S, ie, the detection signal D, is then taken into account by a control unit 4.3, in response to a detected actuation action and / or monitoring on the safety sensor unit 30 (z. B. in case of malfunction of the safety sensor unit 30) a safety device 7 to control. The safety device 7 serves, for example, to carry out safety-relevant functions of the vehicle 1.

The above explanation of the embodiments describes the present invention solely by way of example. Of course, individual features of the embodiments, if technically feasible, can be combined freely with one another, without departing from the scope of the present invention.

LIST OF REFERENCE NUMBERS

1

vehicle

2

moving part

4

control device

4.1

evaluation

4.2

further component, data storage

4.3

control unit

6

monitoring device

7

safety device

10

The door handle unit

11

door handle

20

Primary sensor unit

20.1

primary output

20.2

primary line

30

Safety sensor unit

30a

First safety sensor unit

30b

Second safety sensor unit

30.1

secondary output

30.2

secondary line

40

evaluation

50

user

51

activation device

100

method

100.1

First process step

100.2

Second process step

100.3

Third procedural step

200

security system

PS

Primary detection and / or detection signal

S

detection signal

S1

First detection signal

S2

Second detection signal

AS

Evaluated primary detection signal

D

detection signal

Claims (15)

Method (100) for detecting an actuating action that can be performed by a user (50) on a door handle unit (10) of a vehicle (1), in particular for opening a movable part (2) of the vehicle (1), wherein the door handle unit (10) at least a safety sensor unit (30) for detecting the actuating action, wherein
the safety sensor unit (30) delivers a detection signal (S) in response to the detection, the detection signal (S) being evaluated directly by a vehicle-mounted control device (4) for detecting the operation. Method (100) according to claim 1,
characterized,
in that the safety sensor unit (30) supplies the detection signal (S) at least as a continuous or multistage digital or analog signal or as a measurement signal (S), the measurement signal (S) in particular proportional to and / or dependent on a signal generated by the safety sensor unit (30 ) measured physical quantity. Method (100) according to claim 1 or 2,
characterized,
that the control device (4) such electronically evaluating the detection signal (S) and / or interpreted that the detection signal (S) dependent detection signal (D) having a lower information content as the detection signal (S), in particular a binary signal is produced. Method (100) according to one of the preceding claims,
characterized,
in that the detection of the actuating action by the safety sensor unit (30) and / or the measurement performed for detection by the safety sensor unit (30) is evaluated and / or controlled directly and / or directly by the control device (4). Method (100) according to one of the preceding claims,
characterized,
in that , depending on the detection signal (S) and / or on a detection signal (D), an in particular safety-relevant function of the vehicle (1), in particular an emergency stop of the vehicle (1), in particular by the control device (4) as emergency stop device (4). 4) is performed. Method (100) according to one of the preceding claims,
characterized,
in that a monitoring device (6) is provided on the vehicle, wherein the monitoring device (6) regularly and regularly monitors the safety sensor unit (30), in particular the operating state and / or the functioning of the safety sensor unit (30). Method (100) according to one of the preceding claims,
characterized,
in that the monitoring device (6) carries out the monitoring in such a way that an operating point of the safety sensor unit (30) is determined, in particular by comparing at least one output signal value of the safety sensor unit (30) with at least one electrical voltage and / or current value of the safety sensor unit (30) becomes. Method (100) according to one of the preceding claims,
characterized,
in that a monitoring device (6) and / or the control device (4) make the detection signal (S) plausible, in which case a first detection signal (S1) from a first safety sensor unit (30a) and a second detection signal (S2) from a second safety sensor unit (30b ) be evaluated. Method (100) according to one of the preceding claims,
characterized,
in that a primary sensor unit (20) is provided, and by the primary sensor unit (20) a primary detection and / or detection of the actuating action takes place, whereas the detection of the actuating action by the safety sensor unit (30) as a redundant detection takes place subordinate
and / or that a primary sensor unit (20) is provided, and the primary sensor unit (20) in response to a primary detection and / or detection outputs a primary detection and / or detection signal (PS), wherein in particular the primary detection and / or Detection signal (PS) is evaluated only indirectly by the control device (4) in particular via an evaluation device (40). Method (100) according to one of the preceding claims,
characterized,
that the evaluation of the detection signal (S) of the safety sensor unit (30) causes a fault diagnosis by the vehicle-side control device (4). Safety system (200) for detecting an actuating action that can be performed by a user (50) on at least one door handle unit (10) of a vehicle (1), in particular for opening a movable part (2) of the vehicle (1), comprising the door handle unit (10). , in which
the door handle unit (10) has at least one safety sensor unit (30) for detecting the actuating action, wherein
by the safety sensor unit (30) in response to the detection, a detection signal (S) is available, wherein
the detection signal (S) can be evaluated directly by a vehicle-side control device (4) for detecting the actuating action. Safety system (200) according to one of the preceding claims,
characterized,
in that a primary sensor unit (20) is provided for the primary detection and / or detection of the actuating action, wherein preferably the safety sensor unit (30) is designed as a secondary sensor unit (30) for the subsequent, redundant detection of the actuating action
and / or that the primary sensor unit (20) has a primary output (20.1) for outputting the primary detection and / or detection signal (PS), wherein the primary output (20.1) is in particular electrically connected to an evaluation device (40), wherein preferably the safety sensor unit (30) has a secondary output (30.1) for outputting the redundant detection signal (S), wherein the secondary output (30.1) is preferably electrically connected to the control device (4)
and / or that the primary sensor unit (20) has an evaluation device (40) and / or is electrically connected to the evaluation device (40), wherein in particular the evaluation device (40) is electrically connected to the control device (4). Safety system (200) according to one of the preceding claims,
characterized,
in that a primary detection unit (PS) of a primary sensor unit (20) can be evaluated by an evaluation device (40), and by the evaluation of the primary detection signal (PS) a primary detection signal (PS), in particular as an evaluated primary detection signal (AS), can be determined and / or by the evaluation device (40) can be output
and / or that the evaluation device (40) has an evaluation output for outputting an evaluated primary detection signal (AS) to the control device (4), wherein in particular the evaluated primary detection signal (AS) is supplied as a digital signal in dependence on the detected actuation action. Safety system (200) according to one of the preceding claims,
characterized,
in that the safety sensor unit (30) is designed as a Hall sensor (30) and / or the like, wherein the detection signal (S) is deliverable as an analog continuous signal to the control device (4)
and / or that the security system (200) is operable according to a method (100) according to one of claims 1 to 10. A door handle unit (10) for a vehicle (1) for opening a movable part (2) of the vehicle (1), the door handle unit (10) being operable by an actuating action to be performed by a user (50) on the door handle unit (10) at least one safety sensor unit (30) for detecting the actuating action, wherein
by the safety sensor unit (30) in response to the detection, a detection signal (S) is available, wherein
the detection signal (S) can be evaluated directly by a vehicle-side control device (4) for detecting the actuating action
and / or that the door handle unit (10) is operable according to a method (100) according to one of claims 1 to 10 and / or in a security system (200) according to one of claims 11 to 14 is used.

Images