Operator control device for vehicles

Abstract

Operator control device (2) for vehicles (1), wherein the operator control device has a handle portion (2a, 21), on which at least one sensor device (5, 6; 25a, 25b, 25c, 25d) is arranged, said sensor device being in the form of a capacitive or resistive or inductive sensor device for approach detection. The sensor device is coupled to a control / evaluation device (10). The control / evaluation device has a signal output (5) for outputting operator control signals to a downstream, vehicle-based central control unit (3) and processes the signals from the sensor device (5, 6; 25a, 25b, 25c, 25d) and produces at least both an operator control signal (m1.1, m1.2; m2.1, m22) and a confidence signal (k1.1, k1.2; k2.1, k2.2) associated with the operator control signal. The confidence signal indicates a measure of the reliability of the detection of the operator control signal by the operator control device. The operator control signal and the associated confidence signal are output via the signal output (5).

Description

[0001] Control device for vehicles

[0002] The present invention relates to an operating device for use as a door handle or flap handle on a vehicle. Furthermore, the invention relates to a method for detecting an actuation of an operating device.

[0003] Numerous operating devices are known from the prior art in which a sensor device on a vehicle door handle detects the approach of a user.

[0004] Such operating devices for vehicles usually have a grip section (also referred to as a handle) in which at least one sensor device for detecting operator access is arranged. The at least one sensor device is designed as a capacitive sensor device for proximity detection, which is coupled to a control evaluation device, which in turn is also designed as part of the operating device. The control evaluation device has a signal output for outputting operating signals to a central control unit on the vehicle. This central control unit controls the locking devices of the vehicle depending on the signals from the operating device, for example unlocking the vehicle door on which the operating device is installed.

[0005] In capacitive sensor devices, field changes in electric fields in the environment of the sensor element are detected via at least one sensor electrode for evaluation purposes, using a capacitance measurement. The capacitance of a sensor electrode is measured relative to a reference electrode. The reference electrode can be part of the operating device or also a component of the environment. A corresponding system is known, for example, from EP3620802 A1.

[0006] Various methods have been established in the state of the art to determine the variable capacitance in such a control device through measurements. In simple circuits, the variable capacitances can be used in an oscillator circuit whose frequency is measured. Alternatively, a charging or discharging curve can be measured using a known impedance. Other methods involve a charge transfer between the variable capacitance and a known capacitance. Based on the charge state after a number of transfers, the unknown capacitance can be determined by the control and evaluation device. Bridge circuits can also be used to determine the charge, as can methods using integrators and comparators.

[0007] Capacitance sensors have proven themselves in these applications; they are inexpensive to manufacture and also durable. However, their accuracy is inherently dependent on environmental influences. Interference from electromagnetic (interference) fields or climatic influences (rain, fog, heat, etc.) can affect the detection accuracy of a capacitive sensor device in an operating device, particularly in outdoor vehicles.

[0008] The object of the invention is to provide an operating device with improved signal transmission to vehicle-side control devices.

[0009] This object is achieved by an operating device and a method according to the patent claims.

[0010] The operating device according to the invention is designed such that the control evaluation device processes the signals of the sensor device and generates both an operating signal and a confidence signal associated with the operating signal.

[0011] When the term confidence signal is used here, it means any type of information transfer, i.e. the transmission of an analog signal (e.g. voltage level) as well as the coded transmission of a value (confidence value).

[0012] Where the terms door handle, handle, or vehicle door handle are used in this application, all types of door handles on vehicles are encompassed. In particular, these terms include movable door handles with protruding, graspable handles, fixed door handles, extendable and retractable door handles, and generally flaps and handles that allow a user access to the mechanical movement of a component of the vehicle. Particularly with electrically opening doors, vehicles often have permanently mounted handles or handle constructions, often in shapes that differ from traditional door handles (for example, so-called wing door handles, whose design is borrowed from an aircraft wing). The invention is applicable to all of these types of handles.

[0013] Both the operating signal and the associated confidence signal are provided via the signal output of the control and evaluation device. A vehicle-side control device (not part of the invention) coupled to the operating device can receive and evaluate the signals. Based on the operating signal and taking the associated confidence signal into account, the higher-level control device then makes a decision as to whether a vehicle function should be activated or whether other further process steps should be performed.

[0014] The confidence signal can be controlled by the

[0015] Evaluation device solely from the signals of the

[0016] Sensor device. However, additional information to which the control evaluation device has access can also be incorporated into the confidence signal. This can include, in particular, time series of data from the sensor device as well as signals from other sensors.

[0017] Whilst the operating signal indicates when it is output that an operation has been detected by the operating device, the confidence signal provides a measure of the certainty or reliability of the detection. By considering both the operating signal and the confidence signal together, a downstream control device in the vehicle can initiate appropriate control of the other vehicle functions. If, for example, an operation by the operating device is detected with a high degree of reliability under good ambient conditions, this can be identified by the corresponding confidence signal and is communicated to the vehicle-side control device. This can then, knowing the high reliability of the operating signal, initiate a quick door opening, for example.If, on the other hand, the confidence signal indicates that the operating signal is only moderately or even poorly reliable, a different behavior can be initiated or further information (other sensors, analysis of vehicle states, communication with operator access devices such as vehicle keys or mobile phones, etc.) can be included in the analysis in the central control device. This enables the vehicle to react quickly if the operating signal is highly reliable, but prevents vehicle functions from being triggered incorrectly if the reliability is medium or low. The information is handled by the more central control device, which is usually integrated by the manufacturer. This receives valuable information over and above the operating signal and, due to its more central, more powerful arrangement, can, if necessary,access significantly more information than the control and evaluation unit in the control unit. This allows a vehicle manufacturer to respond more precisely to the signals from the control unit.

[0018] Numerous different methods can be implemented in the control and evaluation device to generate the confidence signal. Even the inclusion of simple measured values ​​which provide information about the ambient conditions in the area of ​​the operating device can form the basis for or influence the generation of the confidence signal. For example, if the control and evaluation device detects, based on a temperature measurement in the operating device, that unfavorable ambient conditions exist, this can be taken into account when generating the confidence signal. Ambient signals and electromagnetic interference can be detected and included in the generation of the confidence signal by detecting the time-varying capacitances at the sensor electrode or by detecting other devices coupled to the control and evaluation device (e.g. antennas or coils).A confidence signal can also be generated from the controlled variables of the capacitive sensor device, for example a setting of the sensitivity or from the evaluation of historical signal curves from a sliding period preceding a current recording.

[0019] Finally, the confidence signal can also be generated solely from the sensor signals, as explained in the examples below. There are evaluation methods for

[0020] Capacitance sensors in which the same physical sensor device is used multiple times for a measurement with different measurement parameters, and the operating signal is generated as a function of the totality of these multiple measurements, for example as a mean or a median. Reliability and thus confidence can be derived from a comparison of the measured values ​​under different measurement parameters. False detections triggered by environmental conditions (for example, water hammer on the operating device) are evident in the fact that different results are achieved when the capacitive sensor devices are controlled differently according to different measurement parameters in quick succession.In particular, the measurement with different recharging frequencies or also different pulse durations in a burst of control pulses, which the control evaluation device applies to the capacitive sensor device, regularly makes it possible to provide information about the reliability of the operating signal.

[0021] The confidence signal can be coded for output in a variety of ways. For example, a numerical value can be transmitted as a confidence signal, which is digitally or analogously coded and provides a quantitative measure for the uncertainty or the certainty of the transmitted operating signal. With digital coding, any numerical scale can be used, for example, a value between zero and one or a value between zero and 10. In addition, category values ​​can be transmitted, for example, a characteristic value for a category, corresponding to "high reliability of detection", a value for the category "medium reliability of detection" and a value for the category "low reliability of

[0022] Recording". Information on the generation of the

[0023] Confidence signals can be transmitted together with the confidence signal and several confidence signals can also be transmitted for one operating signal, which, for example, were each derived in a different way from the available signals and data of the control evaluation device.

[0024] The transmission of the operating signal and the confidence signal can be provided in a uniform signal package at the signal output, but the signals can also be provided separately and even via separate outputs at the signal output.

[0025] The transmission of the confidence signal, in addition to the operating signal, also makes it possible to provide a vehicle-adjustable tolerance for operating procedures. This is because it is possible to set a threshold for the desired reliability of an operating signal in the central control unit, e.g., by service personnel or by user settings.

[0026] The conditions under which an operating signal with an associated confidence signal is output by the operating device can be determined by the programming or configuration of the control evaluation device. Depending on the configuration, a signal is output, for example, whenever the control evaluation device has detected a possible operation, even if the reliability of the detection is low, as indicated by the associated confidence signal. Alternatively, a configuration can be provided which only outputs operations with a medium to high level of reliability as a signal. Even in such configurations, the additional information provided by the confidence signal is helpful in classifying the operating signal by the vehicle-side control device.

[0027] In a preferred embodiment of the invention, the

[0028] Operating device designed in such a way that the

[0029] Confidence signal is generated at least partially from a sensitivity specification set by the control evaluation device for the sensor device.

[0030] The sensitivity of capacitive sensor arrangements can be adjusted in different ways, depending on their control type. This setting is periodically adjusted by the control and evaluation device, for example, depending on the temporal development of the signals and the noise or the signal-to-noise ratio. From the currently set sensitivity, the control and evaluation device can generate a confidence signal for the respective measurement and make it available at the signal output. Since the sensitivity setting is already known in the control and evaluation device, a current confidence value for the transmission of a confidence signal can be kept available at any time.

[0031] In a preferred embodiment of the invention, the operating device is designed to generate the confidence signal at least partially from a trigger threshold value set by the control and evaluation device for the sensor device. In a similar way to the sensitivity, a trigger threshold value is often adjusted by the control and evaluation device for a sensor device, depending on how the signal behavior of the sensor device develops. The trigger threshold value can therefore likewise be a measure of the reliability of a determined operating signal. The control and evaluation device determines this information anyway and can therefore easily use it to generate the confidence signal.

[0032] It is further preferred if the confidence signal is generated at least partially from a time profile of the signals of the sensor device within a sliding time window before the triggering of the operating signal.

[0033] The time course of a sensor signal often provides insight into the sensor's detection conditions. The occurrence of significant signal fluctuations or disturbances, and the detection of fluctuations in the sensor values, can indicate unfavorable detection conditions and correspondingly unreliable detection. If a sliding time period prior to the detection and output of the control signal is evaluated, a confidence signal can be generated from the signal course, which takes the detection conditions during this time period into account.

[0034] It is particularly advantageous if at least two voltage pulse sequences (bursts) are applied to the sensor device by the control-evaluation device of an operating device according to the invention for a measurement, wherein the voltage pulse sequences differ in their frequency and / or pulse duration and the confidence signal is generated at least partially from a comparison which is in each case generated by the control-evaluation device from the sensor values ​​resulting from the voltage pulse sequences.

[0035] The control of a sensor device by the control-evaluation device with a voltage pulse sequence, a so-called "burst", is known in the art as an evaluation method for determining a capacitance at the sensor electrode. The voltage pulses each lead to a charge reversal process at the capacitance formed at the sensor electrode and the capacitance can be determined depending on the resulting charges and known voltages. It is not important within the scope of this invention which concrete evaluation method is used to determine the capacitance. However, it has been shown that the use of different voltage pulse sequences with regard to their frequency and / or their pulse duration can allow a differentiation of the type of event detected.As described below, for example, the change in capacitance caused by a splash of water on a vehicle door handle used as an operating device can be distinguished from the approach of a user's hand if several voltage pulse sequences which differ in their frequency and / or pulse duration are evaluated for one measurement. The actual operating signal is then generated by the control evaluation device when these several voltage pulse sequences have been evaluated as a whole and, for example, the median of the respective detection signals an operation. However, the more the signals of the individual voltage pulse sequences differ from one another, the greater the uncertainty regarding the actual presence of an operating process, which is included in the generation of the confidence signal.

[0036] It is further provided in a preferred embodiment of the operating device that at least one filter device is formed which filters the signals of the sensor device, wherein the control evaluation device generates the confidence signal at least partially from the signal components filtered out by the filter device.

[0037] The use of filters in the evaluation of capacitive sensors is well known. Low-pass filters, for example, are often used, but other filtering devices can also be used, including both hardware and software-implemented filters.

[0038] Signal difference of the filtered signal and the unfiltered input signal can be used to create the

[0039] Confidence signals can be used. Depending on the filtered-out signal components, the reliability of the detection of an operating process can be determined.

[0040] In a preferred embodiment of the invention, in addition to the first sensor device, at least one further sensor device is provided in the operating device, which has a detection range that is at least partially different from that of the first sensor device. The sensor devices are coupled to the control and evaluation device, and the control and evaluation device generates the confidence signal at least partially from a comparison of the sensor signals of the various sensor devices.

[0041] The control and evaluation device can control the sensor devices simultaneously, but sequential control of the sensor devices can also be provided. If, for example, different sensor electrodes are used in an operating device, the capacitive evaluation can be achieved using different electrode combinations by changing the couplings of the sensor electrodes. If these different electrode combinations result in a consistent signal for an operating process, the confidence signal will indicate a corresponding value with a high degree of certainty. In the case of inconsistencies between the different capacitive detections in different combinations of sensor devices, however, the confidence signal will indicate a lower degree of certainty for the operating signal.

[0042] In a further development of the invention, at least one sensor device is provided in the operating device, via which the control and evaluation device can record a measured value for ambient conditions of the operating device. The confidence signal can be generated or modified depending on these ambient conditions. It is known that capacitive sensor devices produce values ​​with varying levels of reliability under different ambient conditions. These different influences on an operating condition can be incorporated into the confidence signal, for example by the control and evaluation device looking up a value in values ​​stored in a table and incorporating the reliability of a sensor under these operating conditions into the confidence signal.It is advantageous that the ambient conditions are recorded directly at the control device, since, given the location of a control device on a vehicle, depending on the orientation and positioning of the vehicle, as well as its position, very different conditions can exist at different control devices on the vehicle. Depending, for example, on the position of the sun, wind direction, or even the direction of precipitation, the ambient conditions can differ significantly from the ambient conditions at other control devices and the conditions at the location of a central recording device on the vehicle.

[0043] In a preferred embodiment of the aforementioned advantageous exemplary embodiments, a temperature, a pressure, a deformation, or a vibration in the operating device is recorded as a measured value for ambient conditions. This data can also be recorded as a time series with a sliding time window, for example, in order to record a change in the operating device from areas with different ambient conditions. For example, these ambient conditions can be used to detect a change in the ambient conditions (vibration, temperature, etc.) when the vehicle enters a car wash, so that the confidence signals for recorded operations can be adapted.It is a further preferred embodiment of the invention if the operating device is designed to provide the control and evaluation device for a frequency analysis of at least one temporal signal curve of a structural unit of the operating device. The control device can then generate the confidence signal at least partially from the result of the frequency analysis. In an operating device according to the invention, additional components can be installed in addition to the actual sensor device. The control and evaluation device can use both the sensor device and further components, for example transmitting coils or receiving coils, to carry out a frequency analysis of the signals and to use these signals to determine electromagnetic interference in the area of ​​the operating device.Characteristic frequencies can be detected by the control evaluation device, which can, for example, indicate the proximity of interference sources in the area of ​​the control device.

[0044] The invention will now be explained in more detail with reference to the accompanying figures, which show exemplary embodiments of the invention.

[0045] Figure 1 shows schematically the arrangement of an operating device according to the invention on a vehicle;

[0046] Figure 2 shows schematically the structure of an operating device according to the invention and its coupling to a vehicle-side control device;

[0047] Figure 3a shows signal curves which are detected by the control and evaluation device in a first embodiment using the sensor device;

[0048] Figure 3b shows a process sequence according to the first embodiment;

[0049] Figures 4a to 4d show the detection according to a second

[0050] From an embodiment of the invention; Figure 4e shows a process sequence according to the second

[0051] From example;

[0052] Figure 1 shows a vehicle 1 which has a central control device 3 on the vehicle (not part of the invention). This central control device 3 is integrated into the on-board system and can initiate vehicle functions, in particular the unlocking of doors and hatches on the vehicle. The central control device 3 is coupled to an operating device 2 according to the invention, which in this example is arranged on a driver's door or passenger door. The operating device 2 has a non-graspable door handle 2a (corresponding arrangements can also be arranged on tailgates or other hatches of the vehicle).

[0053] Figure 2 shows a schematic view of the structure of the operating device 2 according to the invention and its coupling to the vehicle-side central control device 3. The operating device according to this exemplary embodiment has a control and evaluation device 10. In addition, sensor devices 5, 6 are arranged in the operating device 2 and are coupled to the control and evaluation device 10. At least one of the sensor devices 5, 6 is designed as a capacitive sensor device which can be evaluated with regard to its changing capacitance values ​​by being controlled by the control and evaluation device 10. If an operator approaches the vehicle 1 and moves his hand in the direction of the door handle 2a of the operating device 2, the approach of the operator's hand can be detected by means of the changed capacitance values. On the other hand, other events which do not constitute an operation should be distinguished from a targeted operating process.Figure 3a shows how, according to a first embodiment, the reliability of a targeted operator detection can be determined by different control of the capacitive sensor device.

[0054] Two signal curves of the same capacitive sensor arrangement are shown over time. The signal curve Ipl was generated by using pulses of a first length, which is longer than the signal curve at lp2, to evaluate the capacitive sensor arrangement. Accordingly, the pulses used for the signal curve lp2 are shorter than the evaluation pulses used in the signal curve Ipl.

[0055] During the time period t1, in both measuring runs, an intensive water hammer (or water surge) hit the operating device 2 . This type of water impact on the operating device can occur, for example, during a heavy downpour or in a car wash. During the time period t2, however, the operating device was activated by the approach of an operator's hand. In practice, each of the processes is recorded one after the other, once with the longer pulses (Ipl) and once with the shorter pulses (Ip2). In the time period t1, it can be seen that when a water hammer occurs, the signals vary considerably depending on the pulse length. In the time period t2, i.e. when a user's hand approaches, the capacitance values ​​determined are extremely similar. Accordingly, after recording in the time period t2, the control and evaluation device first generates an operating signal ml.l , which signals a possible actuation. However, the associated confidence value kl . 1 is low given the strong variation in the signals for long and short pulses, indicating a high degree of uncertainty in detecting the actuation. The actuation signal ml . l is output at the signal output together with the associated confidence value kl . l , converted into a confidence signal.

[0056] During the measurement in the time period t2, an operating signal ml . 2 is output, which signals an operation that the confidence signal kl . 2 is, however, significantly higher (or greater) than kl . l, since the signals with different pulse lengths show small differences during the evaluation and the certainty of the detection is therefore greater.

[0057] A vehicle-side control device, which receives the respective operating signals and the associated confidence signals, can decide, depending on the respective confidence signal, whether a door should be opened or not. In the case of lower reliability (class 1), for example, the vehicle-side control device can use further checks with regard to the ambient conditions or the vehicle condition to make its decision, or wait for further measured values, which may result in a longer evaluation time. However, if the certainty of the detection (class 2) is high, the door can be opened solely on the basis of the measured signal, which allows the vehicle to react more quickly to operator access.

[0058] Figure 3b shows the basic method sequence that is also used in the embodiment just described. In step 100, the capacitance values ​​on a sensor device are first recorded using first measurement parameters by the control and evaluation device. In step 110, second capacitance values ​​on the same sensor device are determined using the control and evaluation device. In step 120, the various capacitance values ​​that were determined using different measurement parameters on the same sensor device are evaluated, and a resulting capacitance value is determined. On the basis of this capacitance value, step 125 is used to determine whether an operating signal should generally be output.If an operating signal is output, the control evaluation device will generate a confidence value corresponding to the resulting capacitance value in step 130, which confidence value is determined by comparing the capacitance values ​​determined under different measurement parameters. Subsequently, in step 140, an operating signal resulting from the capacitance value is output at the signal output together with the corresponding confidence value and transmitted to a central control unit in the vehicle.

[0059] Figures 4a to 4d show an alternative embodiment.

[0060] In this exemplary embodiment, the operating device has a vehicle handle 21 with a plurality of sensor electrodes 25a to 25d, which are placed at different locations in the vehicle handle 21. Depending on the control by the control-evaluation device 5, different electrodes 25a to 25d can be measured against one another in order to determine a capacitance. In Figures 4a and 4c, the electrodes 25a and 25b or 25c and 25d are coupled together to measure capacitances. In Figures 4b and 4d, however, the electrodes 25a and 25c or 25b and 25d are coupled together to determine capacitances. Determining the capacitance values ​​accordingly comprises both a first measurement in the configuration of Figures 4a and 4c and an immediately subsequent measurement of the configurations of the electrodes in Figures 4b and 4d.The determination of an operating signal therefore involves several different combinations of capacitive couplings. This evaluation takes advantage of the fact that when a

[0061] hand 20 of a user, the capacitance values ​​vary differently depending on the electrode coupling. In Figures 4a and 4b a user actually accesses the vehicle door handle 21 with his hand 20, whereas in Figures 4c and 4d a gush of water 30 acts on the vehicle door handle 21 instead. If in Figures 4a and 4b the various measurements with different sensor arrangements deliver consistent results, a high confidence value k2 . 1 with the corresponding measured value m2 . 1 can be output together at the signal output. In the case of Figures 4c and 4d, on the other hand, at least slightly inconsistent detection values ​​will be present, so that the confidence value k2 . 2 with the associated measured value m2 . 2 indicates that the certainty of the detection is lower than in Figures 4a and 4b.

[0062] The method shown in this exemplary embodiment is shown in an overview in Figure 4e. In step 200, the control evaluation device detects a first capacitance value under control of a first sensor configuration. In step 210, the control evaluation device detects a second capacitance value with a second sensor configuration. In step 220, the control evaluation device generates a resulting capacitance value by looking at the first and second capacitance values ​​together and decides in step 225 whether an operation is possible. If this is the case, a confidence value is generated in step 230 depending on the consistency of the values ​​and in step 240 the resulting confidence value is made available together with the operating signal at the signal output for a control unit on the vehicle side.

Claims

Patent claims 1. Operating device (2) for vehicles (1), wherein the operating device has a handle section (2a, 21) on which at least one sensor device (5, 6; 25a, 25b, 25c, 25d) is arranged, wherein the sensor device (5, 6; 25a, 25b, 25c, 25d) is designed as a capacitive or resistive or inductive sensor device for proximity detection, which is coupled to a control evaluation device (10), wherein the control evaluation device (10) is also designed as part of the operating device (2), wherein the control evaluation device has a signal output (5) for the output of operating signals to a downstream, vehicle-side central control unit (3), characterized in that the control evaluation device (10) receives the signals from the sensor device (5, 6; 25a, 25b, 25c, 25d ) and at least one operating signal (ml.l, ml .2 ; m2.1, m22) as well as a confidence signal (kl.l, kl.2; k2.1, k2) associated with the operating signal.2 ), wherein the confidence signal indicates a measure of the detection reliability of the operating signal by the operating device, wherein the control evaluation device (10) outputs the operating signal and the associated confidence signal via the signal output (5).

2. Operating device according to claim 1, wherein the confidence signal is generated at least partially from a sensitivity specification set by the control evaluation device for the sensor device.

3. Operating device according to claim 1 or 2, wherein the confidence signal is generated at least partially from a trigger threshold value set by the control evaluation device for the sensor device.

4. Operating device according to one of the preceding claims, wherein the confidence signal is generated at least partially from a time profile of the signals of the sensor device within a sliding time period before the triggering of the operating signal.

5. Operating device according to one of the preceding claims, wherein the control evaluation device is designed to apply at least two voltage pulse sequences to a sensor electrode of the sensor device for a measurement, wherein the voltage pulse sequences differ in their frequency and / or pulse duration and wherein the confidence signal (kl. 1, kl. 2) is generated at least partially from a comparison of the sensor values (Ipl, lp2) resulting from the voltage pulse sequences.

6. Operating device according to one of the preceding claims, wherein at least one filter device is provided in the operating device, which filter the signals of the sensor device, wherein the control evaluation device generates the confidence signal at least partially from the signal components filtered out by the filter device. 7 . Operating device according to one of the preceding claims, wherein at least two sensor devices (25a, 25b, 25c, 25d) are provided, which at least partially have different detection ranges and are each coupled to the control evaluation device, wherein the control evaluation device generates the confidence signal (k2 . 1 , k2 . 2 ) at least partially from a comparison of the sensor signals of the various sensor devices (25a, 25b, 25c, 25d). 8 . Operating device according to one of the preceding claims, wherein the control evaluation device detects at least one measured value for ambient conditions of the operating device and wherein the control evaluation device Confidence signal generated at least partially from this measured value.

9. Operating device according to claim 8, wherein the measured value for ambient conditions represents a temperature or a pressure or a vibration.

10. Operating device according to one of the preceding claims, wherein the control evaluation device is designed to carry out a frequency analysis of at least one signal of a structural unit of the operating device, wherein the control evaluation device generates the confidence signal at least partially from the result of this frequency analysis.

11. A method for operating an operating device according to one of claims 1 to 10, wherein the signals of the sensor device are processed and at least one operating signal and a confidence signal associated with the operating signal are generated, wherein the operating signal and the associated confidence signal are output via the signal output.

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