Operating system for a motor vehicle, as well as operating device and portable feedback device, and method for operating such an operating system

Abstract

Operating system (10) for a motor vehicle comprising: - at least one control device (12) which is permanently installed in the motor vehicle and which is designed to control at least one of several functions of the motor vehicle upon detection of at least one specific operating action by a user; and - at least one portable feedback device (14) designed to be worn on at least one part of the user's body and further designed to generate haptic feedback; wherein the operating device (12) is designed to assign a specific haptic feedback to at least one specific operating operation upon detection and to generate a feedback signal containing information about the assigned haptic feedback, wherein the operating device (12) further comprises a radio interface to the at least one portable feedback device (14) and is designed to transmit the feedback signal via the radio interface, wherein the at least one portable feedback device (14) is designed to generate the specific haptic feedback, for which information is contained in the feedback signal, upon receiving the feedback signal; characterized in that the at least one portable feedback device (14) is designed to emit at least one description signal, wherein the description signal includes at least one piece of information about a list of available haptic feedback of the at least one portable feedback device (14) and the operating device (12) is designed to receive the at least one description signal from the at least one portable feedback device (14) and to determine, based on predetermined suitability criteria, whether the feedback signal is sent to the at least one portable feedback device (14).

Description

[0001] The present invention relates to an operating system for a motor vehicle comprising at least one operating device which is fixedly arranged in the motor vehicle and at least one portable feedback device which is designed to generate haptic feedback. Furthermore, the invention relates to an operating device for a motor vehicle, a feedback device for an operating system for a motor vehicle, and a method for operating such an operating system.

[0002] A motor vehicle typically has a control device for operating essential and, where applicable, optional functions. These functions include controlling at least one of the vehicle's lights, a heating and / or ventilation system, a windshield wiper system, and / or an infotainment system. Modern vehicles are sometimes equipped with an on-board computer designed to execute these functions in response to user input. A disadvantage of this is that the user often has to focus their attention on the on-board computer and / or the specific vehicle component controlling a particular function. This diverts the user's attention from the road and causes distraction while driving.

[0003] This distraction lasts longer if the user is waiting for confirmation of their action, for example, waiting for a confirmation screen on the on-board computer. A screen can provide haptic feedback to confirm an action. This is usually achieved by integrating one or more actuators into the screen. A disadvantage is that the haptic feedback is limited to the immediate vicinity of the screen. Furthermore, with larger screens, such as those used in a vehicle's on-board computer, haptic feedback is difficult or requires significant energy input, as these screens are heavy and therefore require a considerable amount of movement. This makes the production of large screens with haptic feedback energy-intensive and costly.

[0004] In this context, the generic US patent 2015 / 0 293 592 A1 describes how an electronic device with a built-in haptic module analyzes received information and, depending on the result of the analysis, assigns a specific haptic command, which the haptic module then executes. The electronic device can be designed as a car radio or as an infotainment system for a motor vehicle. The received information can be generated by a specific event, such as a particular movement and / or touching a screen. However, this electronic device has the disadvantages described above.

[0005] The use of a non-permanently positioned feedback device that provides haptic feedback in a predetermined situation is known for certain scenarios in motor vehicles. US 2015 / 0 246 639 A1 describes a haptic alarm system for a motor vehicle, wherein a sensor system detects a condition of the motor vehicle and / or the driver, and a haptic device communicates with the sensor system. The sensor system determines, for example, whether the driver is drowsy and / or another hazardous condition exists, and as a result, the haptic device can issue a warning by means of a haptic alarm. US 2015 / 0 314 681 A1 describes a similar alarm system for a driver of a motor vehicle, wherein sensors measure, for example, eye blinks, head nods, head movements, and / or fixed gazes, and a haptic device can issue a warning.

[0006] Another way to use a feedback device with haptic feedback for use in a motor vehicle is described in US 2015 / 0347075 A1. A notification manager detects a notification event, determines the context of that message, and decides which device should issue a notification. This allows a user's attention to be directed to a specific device, such as a particular screen on a specific device in a motor vehicle, which may be permanently installed in the vehicle and / or portable. A notification can be issued by the same device and / or by an actuator mounted on a component of the motor vehicle, in the form of haptic feedback. A notification is issued, for example, upon receipt of an email, a text message, or a change in a navigation device's route.

[0007] The object of the present invention is to create an operating system for a motor vehicle which enables safe use of the operating system with the least possible incoming distraction.

[0008] This problem is solved by the subject matter of the independent patent claims. Advantageous embodiments of the invention are disclosed by the dependent claims, the following description, and the figures.

[0009] The present invention is based on the understanding that haptic feedback, as a response to a user's operation in a motor vehicle, reduces user distraction. Furthermore, the invention is based on the understanding that more energy-efficient haptic feedback should be provided by the smallest possible device. Therefore, instead of a large control unit in the vehicle, such as an on-board computer, a small, portable feedback device should provide the haptic feedback. This portable feedback device can be worn on at least one part of the user's body, such as an arm and / or wrist. This allows for a variety of haptic feedback options, which are more pronounced when the device is close to the body.The different feedback options can be better distinguished from one another by the possibility of targeted haptic feedback to a specific area of ​​the body, such as a specific side of a wrist, and can thus provide different feedback for different operating procedures.

[0010] The operating system according to the invention for a motor vehicle comprises an operating device which is permanently arranged in the motor vehicle and which is designed to control at least one of several functions of the motor vehicle upon detecting at least one specific operating action by a user. Furthermore, the operating system comprises at least one wearable feedback device which is designed to be worn on at least one part of the user's body and to generate haptic feedback. Such wearable feedback devices are also known as so-called wearables, which can be worn, for example, on an arm and / or a wrist and / or an ankle and / or a leg and / or a finger and / or a neck of the user.

[0011] The operating device is designed to assign specific haptic feedback to at least one specific operating action upon detection and to generate a feedback signal containing information about the assigned haptic feedback. A radio interface exists between the operating device and the at least one portable feedback device, and the operating device is designed to transmit the feedback signal to the at least one portable feedback device via this interface. Upon receiving this feedback signal, the at least one portable feedback device is designed to execute the specific haptic feedback. An advantage is that the portable feedback device allows the haptic feedback to be placed in different locations.A user can feel this more quickly and must keep their finger and / or hand, with which they performed the operation, on the control device and / or in a specific position. This reduces distraction and allows them to concentrate on using both hands to steer the vehicle.

[0012] Furthermore, the at least one feedback device is designed to transmit at least one description signal, wherein the description signal contains at least one piece of information about a list of available haptic feedback from the at least one portable feedback device. The operating device is designed to receive the at least one description signal from the at least one portable feedback device and, based on predetermined suitability criteria, to determine whether the feedback signal is sent to the at least one portable feedback device from which the description signal was received. Furthermore, a suitability criterion can check whether a feedback device is capable of generating a specific haptic feedback and only then send the feedback signal to it. The operating device thus recognizes all available feedback devices for a specific feedback signal.

[0013] The invention also includes optional further developments of the operating system according to the invention, which result in additional advantages.

[0014] In an advantageous embodiment of the invention, the operating device comprises at least one touch-sensitive display unit, such as a touchscreen or touch display. An operating process is then characterized by the touch-sensitive display unit detecting a touch on its surface. The operating device is designed to generate a feedback signal with information about specific haptic feedback after a detected touch on the surface, depending on the type and / or precise position of the touch.

[0015] Alternatively or additionally, the operating device includes at least one image sensor. This can be, for example, a camera and / or an infrared camera. The image sensor is designed to detect a specific user action when it recognizes a particular gesture performed freely in space. The type and / or shape of the gesture informs the operating device which function of the vehicle should be controlled and how. Additionally, the generated feedback signal provides haptic feedback via at least one portable feedback device. This offers the advantage that even vehicle operating systems without displays or screens are designed to provide haptic feedback to the user to confirm an operating action.In addition, this embodiment has the advantage that a user of the operating system no longer needs to look away at all in order to perform an operating operation and receive confirmation of his operating operation.

[0016] In a further advantageous embodiment of the invention, the operating device is designed to control at least one of several functions of a motor vehicle's infotainment system (information and entertainment system) upon detecting at least one specific operating action. The infotainment system is, for example, configured to control a music system and / or a navigation device and / or a communication system of the motor vehicle.

[0017] In a preferred embodiment of the method according to the invention, the operating device comprises at least one sensor element with a spatial longitudinal dimension. The sensor element can be fixedly arranged at any location within the motor vehicle, for example, on the operating device itself, and / or the sensor element can be movably arranged at different locations within the motor vehicle. The sensor element is designed to detect the approach of the at least one portable feedback device to the sensor element within a predetermined limited space adjacent to the sensor element and to interpret this as a specific operating action. For example, the limited space forms a cuboid, with two parallel sides of the cuboid each forming a rectangle, which, for example, has the same spatial longitudinal dimension as the sensor element, one parallel side being directly adjacent to the sensor element.The distance between the two parallel sides is, for example, 10 cm.

[0018] The control device is designed to check whether a predetermined object and / or a predefined portable feedback device is located within this limited space, for example, inside the cuboid. If so, the control device is designed to generate a feedback signal. The portable feedback device is then designed to generate haptic feedback, which is included in the feedback signal. Through this haptic feedback, a user of the control system receives information that, for example, their finger and / or hand and / or the portable feedback device they are wearing has moved sufficiently close to the control device to initiate a specific operating action. An additional advantage is that the user of the control device does not have to take their eyes off the device and can drive more safely.

[0019] Additionally, the sensor is designed to detect the relative position of the portable feedback device with respect to its longitudinal extent. For example, the confined space is further subdivided into several zones, such as a cuboid into several smaller cuboids. Depending on the zone in which the portable feedback device is detected, the sensor is designed to select a specific operating action from a list of possible actions. Furthermore, depending on the selected operating action, the operating device can generate a specific feedback signal with information about a particular haptic feedback. This allows the user of the operating system to better distinguish where they have approached the sensor and whether their approach has initiated the desired operating action.

[0020] Preferably, the operating device has at least one screen designed to display a specific information depending on the operating action detected by the sensor. For example, it could be an operating system with a combination of a touchscreen and a sensor. The display, and thus also the options associated with touching the touchscreen, can change depending on the detected proximity of the portable feedback device.

[0021] In a further advantageous embodiment of the operating system according to the invention, the at least one portable feedback device is designed as a piece of jewelry, preferably as a wristwatch and / or a bracelet and / or a ring and / or a necklace and / or a choker and / or an earring, and / or as a piece of clothing, preferably as a glove, and / or as an implant and / or as glasses.

[0022] In a further advantageous embodiment of the invention, the operating system comprises two or more portable feedback devices. The operating device is designed to send the feedback signal to one or more predetermined portable feedback devices, depending on at least one specific operating action detected. Depending on the specific operating action, a predetermined selection of portable feedback devices to which the feedback signal is sent can be provided. This selection can also be configured and / or supplemented by at least one additional portable feedback device. This results in further combinations that generate specific haptic feedback for the user of the operating system and thereby clarify the haptic feedback's association with a specific operating action.

[0023] In a further preferred embodiment of the method according to the invention, the radio interface between the control device and the at least one portable feedback device is designed in two parts. A first part of the radio interface is formed between the control device and an intermediary device, and a second part of the radio interface is formed between the intermediary device and the at least one portable feedback device. The control device is configured to send the feedback signal to the intermediary device via the first part of the radio interface. An intermediary device can, for example, be a smartphone and / or a tablet computer and / or an electronic data processing device. The intermediary device can be permanently installed in the motor vehicle and / or be portable.The intermediary device is designed to evaluate the haptic feedback information contained in the feedback signal and determine which wearable feedback device the signal should be sent to. The intermediary device can also modify the haptic feedback information to, for example, ensure compatibility between a feedback signal format and a known format that the wearable feedback device can recognize. For instance, the intermediary device specifies a set of parameters with a list of associated parameter values, depending on which a particular feedback signal is sent to a specific wearable feedback device. A user can select the parameter values, and / or the parameter values ​​can be configured by the intermediary device. This allows for the flexible design of a large number of haptic feedback options.This allows the operating system to use a large number of interchangeable portable feedback devices. For example, the intermediary device detects the portable feedback device and adds it to a list of available feedback devices in order to decide, upon receiving a feedback signal, whether to send it to the added feedback device.

[0024] Preferably, the at least one feedback device is designed to transmit at least one description signal, wherein the description signal further includes information about the location and / or identification of the portable feedback device. For example, the description signal contains information about the distance between the portable feedback device and the operating device and / or between the portable feedback device and the intermediary device. The description signal can be transmitted at predetermined time intervals. The suitability criterion here is, for example, a limited distance between the portable feedback device and the operating device and / or a specific part of the operating device, such as an image sensor and / or a sensor component and / or a display unit.For example, the operating device is designed to send a feedback signal to the portable feedback device only when the latter is less than 50 cm away from the operating device. The operating device thus recognizes all available feedback devices for a given feedback signal.

[0025] Alternatively or additionally, the intermediary device is designed to receive the description signal from the portable feedback device and to check it against the suitability criteria.

[0026] The invention also includes a control device for a motor vehicle, wherein the control device is permanently arranged in the motor vehicle and is designed to control at least one of several functions of the motor vehicle upon detecting at least one specific operating action by a user. The control device is further designed to assign specific haptic feedback to the at least one specific operating action upon detection and to generate a feedback signal containing information about the assigned haptic feedback. For this purpose, the control device has a radio interface and is designed to transmit the feedback signal via this radio interface.Furthermore, the operating device is designed to receive at least one description signal from at least one feedback device according to the above description and to determine, based on predetermined suitability criteria, whether the feedback signal is sent to the at least one portable feedback device.

[0027] The advantages and further developments previously described in connection with the operating system according to the invention apply analogously to the operating device according to the invention.

[0028] The invention also includes a feedback device for a motor vehicle control system, wherein the feedback device is designed to be worn on at least part of the user's body and is further designed to generate haptic feedback. The feedback device also has a radio interface and is designed to generate haptic feedback upon receiving at least one feedback signal containing information about a specific haptic feedback. Furthermore, the feedback device is designed to transmit at least one description signal, wherein the description signal contains at least one piece of information about a list of available haptic feedback options.

[0029] The advantages and further developments previously described in connection with the operating system according to the invention apply analogously to the feedback device according to the invention.

[0030] The invention also includes a method for operating a control system for a motor vehicle, wherein the control system comprises at least one control device permanently arranged in a motor vehicle, which, upon detecting at least one specific operating action, controls at least one of several functions of the motor vehicle. The control system includes at least one portable feedback device, which is worn on at least one part of the body and which is designed to generate haptic feedback. In a first method step, the control device assigns specific haptic feedback to the at least one detected, specific operating action and generates a feedback signal that contains information about the specific haptic feedback.In a second process step, the operating device sends the feedback signal to the at least one portable feedback device via a radio interface. In a third process step, the at least one portable feedback device receives the feedback signal and then generates the haptic feedback, for which information is contained in the feedback signal.The method further comprises the steps of sending at least one description signal by the at least one portable feedback device, wherein the description signal contains at least one piece of information about a list of available haptic feedback of the at least one portable feedback device; receiving the at least one description signal from the at least one portable feedback device by the operating device; and determining, based on predetermined suitability criteria, by the operating device whether the feedback signal is sent to the at least one portable feedback device.

[0031] The advantages and further developments previously described in connection with the operating system according to the invention apply analogously to the method according to the invention for operating an operating system for a motor vehicle.

[0032] The present invention will now be explained in more detail with reference to the accompanying drawings, using two exemplary embodiments. These show: Fig. 1. A schematic representation of an operating system for a motor vehicle comprising an image sensor; and Fig. 2 a schematic representation of an operating system for a motor vehicle comprising a touch-sensitive screen.

[0033] The following exemplary embodiments described in more detail represent preferred embodiments of the present invention.

[0034] In the exemplary embodiments, the described components of the embodiment each represent individual features of the invention that can be considered independently of one another. Each of these features further develops the invention independently and can therefore be regarded as part of the invention, either individually or in combinations other than those shown. Furthermore, the described embodiments can also be supplemented by other features of the invention already described.

[0035] In the figures, functionally identical elements are each provided with the same reference symbols.

[0036] The Fig. Figure 1 shows a schematic representation of an operating system 10 for a motor vehicle. The operating system 10 comprises an operating device 12, which is permanently installed in a motor vehicle (not shown), and a portable feedback device 14, which is shown here as being worn on the wrist of a user of the operating system 10. Furthermore, the operating system 10 comprises a display unit 16, an image sensor 18, here configured as a camera, and a sensor element 20. The sensor element 20, for example a sensor strip, is permanently attached to the display unit 16, which is also located in the motor vehicle (not shown). The display unit 16 is designed to send data and / or signals to the operating device 12 and / or to receive data and / or signals from the operating device 12 via a bus connection.For example, the operating device 12 is designed as an on-board computer of the motor vehicle, which controls an infotainment system of the motor vehicle.

[0037] The portable feedback device 14 is designed, for example, as a wristwatch that can generate haptic feedback. The sensor element 20 of the display unit 16 detects whether a user's finger and / or the wristwatch are in the vicinity of the sensor element 20. If this is the case, the display of the display unit 16 switches to an operating display, so that the user receives a visualization of possible operating operations and / or their own executed operation. It is also possible for the camera, which can be positioned anywhere within the vehicle, to detect a free gesture performed by the user in space. For example, the user extends their thumb and pivots their wrist around a specific axis.The sensor part 20 and / or the camera detect a specific user operation and send this via the bus connection to the operating device 12, which can be designed as a data processing unit or a central computer.

[0038] The control device 12 has a radio interface to a mediator device 22, which is, for example, a smartphone. The mediator device 22 can receive a description signal from a nearby portable feedback device 14, such as a wristwatch. Based on the feedback signal from the control device 12 and the description signal from the feedback device 14, the mediator device 22 decides whether the feedback signal should be transmitted to the feedback device 14 via a radio interface. If so, the mediator device 22 can additionally decide whether the feedback signal should be modified, for example, to adapt it to the characteristics of the feedback device 14. The mediator device 22 can make these decisions using a set of suitability criteria that can be configured by a user.For example, one suitability criterion concerns the distance between the portable feedback device 14 and the display unit 16. If this distance is small enough, the feedback signal is sent to the portable feedback device 14. Upon receiving the feedback signal, the feedback device 14 is designed to generate haptic feedback, which contains information about the feedback signal. For example, the user is informed that their previously executed operation was successful.

[0039] The Fig.Figure 2 shows a schematic representation of an alternative embodiment of the operating system 10. Here, the operating device 12 is integrated into the display unit 16, which is fixedly mounted in a motor vehicle (not shown). The operating system 10 further comprises a sensor element 20 and a portable feedback device 14, shown here as a wristwatch. The display unit 16 is designed as a touch-sensitive screen, a so-called touchscreen. This detects an operating action, for example, whether and how the screen was touched, and generates a feedback signal accordingly, providing information about specific haptic feedback associated with the operating action. The feedback signal is transmitted directly via a radio interface of the operating device 12 to the portable feedback device 14, the wristwatch.Upon receiving this feedback signal, the feedback device 14 generates the haptic feedback. Here too, the portable feedback device 14 can emit a descriptive signal, which can be received by the operating device 12 and evaluated based on suitability criteria.

[0040] Overall, the exemplary embodiments describe how an operating system 10 for a motor vehicle can be created which generates haptic feedback as a response to an operating operation by a user of the operating system 10, thereby minimizing distraction of the user and reducing possible hazardous situations during an operating operation while driving the motor vehicle. Reference symbol list 10 Operating system 12 Operating device 14 portable feedback devices 16 Display unit 18 image sensor 20 Sensor part 22 Intermediary device

Claims

[1] Operating system (10) for a motor vehicle comprising: - at least one control device (12) which is permanently installed in the motor vehicle and which is designed to control at least one of several functions of the motor vehicle upon detection of at least one specific operating action by a user; and - at least one portable feedback device (14) designed to be worn on at least one part of the user's body and further designed to generate haptic feedback; wherein the operating device (12) is designed to assign a specific haptic feedback to at least one specific operating operation upon detection and to generate a feedback signal which contains information about the assigned haptic feedback, wherein the operating device (12) further comprises a radio interface to the at least one portable feedback device (14) and is designed to transmit the feedback signal via the radio interface, wherein the at least one portable feedback device (14) is designed to generate the specific haptic feedback, for which the information is contained in the feedback signal, upon receipt of the feedback signal; characterized by , that the at least one portable feedback device (14) is designed to emit at least one description signal, wherein the description signal contains at least one piece of information about a list of available haptic feedback of the at least one portable feedback device (14) and the operating device (12) is designed to receive the at least one description signal from the at least one portable feedback device (14) and to determine, on the basis of predetermined suitability criteria, whether the feedback signal is sent to the at least one portable feedback device (14). [2] Operating system (10) according to claim 1, characterized by , that the operating device (12) has at least one touch-sensitive display unit (16) which is designed to detect the user’s specific operating action by recognizing a touch on the display unit (16). [3] Operating system (10) according to claim 1 or 2, characterized by , that the operating device (12) has at least one image sensor (18) which is designed to detect the user’s specific operating action by recognizing a specific gesture of the user freely performed in space. [4] Operating system (10) according to any of the preceding claims, characterized by , that the operating device (12) is designed to control at least one of several functions of an infotainment system of the motor vehicle upon detection of at least one specific operating operation. [5] Operating system (10) according to any of the preceding claims, characterized by, that the operating device (12) has at least one sensor part (20) with a spatial longitudinal extent, wherein the sensor part (20) is designed to detect an approach of the at least one portable feedback device (14) to the sensor part (20) within a predetermined limited space adjacent to the sensor part (20) and to recognize this as the specific operating operation and thereby to select the specific operating operation from several operating operations depending on a relative position of the portable feedback device (14) with respect to the longitudinal extent of the sensor part (20). [6] Operating system (10) according to any of the preceding claims, characterized by, that the at least one portable feedback device (14) is designed as a piece of jewelry, preferably as a wristwatch and / or a bracelet and / or a ring and / or a necklace and / or a choker and / or an earring, and / or as a piece of clothing, preferably as a glove, and / or as an implant and / or as a pair of glasses. [7] Operating system (10) according to any of the preceding claims, characterized by , that the operating device (12) has two or more interfaces to two or more portable feedback devices (14), and is further designed to send the feedback signal with information about the respective associated haptic feedback to a predetermined and / or to several predetermined portable feedback devices (14), depending on the at least one detected, specific operating operation. [8] Operating system (10) according to any of the preceding claims, characterized by, that the radio interface between the operating device (12) and the at least one portable feedback device (14) is designed in two parts, wherein a first radio interface is formed between the operating device (12) and an intermediary device (22) and a second radio interface is formed between the intermediary device (22) and the at least one portable feedback device (14), wherein the operating device (12) is designed to send the feedback signal to the intermediary device (22) via the first radio interface and the intermediary device (22) is designed to send the received feedback signal to the at least one portable feedback device (14). [9] Operating system (10) according to any of the preceding claims, characterized by , that the description signal further includes at least one piece of information about a location and / or an identifier of the portable feedback device (14). [10] Feedback device (14) for an operating system (10) for a motor vehicle, wherein the feedback device (14) is designed to be worn on at least one part of a user's body and is further designed to generate haptic feedback, wherein the feedback device (14) has a radio interface and is designed to generate haptic feedback upon receiving a feedback signal via the radio interface containing information about a specific haptic feedback, characterized by , that the feedback device (14) is designed to emit at least one description signal, wherein the description signal contains at least one piece of information about a list of available haptic feedbacks of the feedback device (14). [11] Control device (12) for a motor vehicle, wherein the control device (12) is fixedly arranged in the motor vehicle and is designed to control at least one of several functions of the motor vehicle upon detection of at least one specific operating action by a user, wherein the control device (12) is designed to assign a specific haptic feedback to the at least one specific operating action upon detection and to generate a feedback signal which contains information about the assigned haptic feedback, wherein the control device (12) further comprises a radio interface and is designed to transmit the feedback signal via the radio interface; characterized by, that the operating device (12) is designed to receive the at least one description signal from at least one feedback device (14) according to claim 10 and to determine, based on predetermined suitability criteria, whether the feedback signal is sent to the at least one portable feedback device (14). [12] Method for operating an operating system (10) for a motor vehicle, wherein the operating system (10) comprises at least one operating device (12) fixedly arranged in a motor vehicle which, upon detecting at least one specific operating action, controls at least one of several functions of the motor vehicle, and wherein the operating system (10) further comprises at least one portable feedback device (14) which is worn on at least one part of a body and which is designed to generate haptic feedback, wherein the method comprises the following steps: - Assigning a specific haptic feedback to the at least one recognized, specific operating operation and generating a feedback signal containing information about the specific haptic feedback by the operating device (12); - Sending the feedback signal to the at least one portable feedback device (14) via a radio interface of the operating device (12) to the at least one portable feedback device (14); and - Receiving the feedback signal and generating the haptic feedback about which the information is contained in the feedback signal, by means of at least one portable feedback device (14); characterized by the following further steps: - Emitting at least one description signal by the at least one portable feedback device (14), wherein the description signal includes at least the information on a list of available haptic feedbacks of the at least one portable feedback device (14); - Receiving the at least one description signal from the at least one portable feedback device (14) by the operating device (12); and - Determine, based on predetermined suitability criteria, by the operating device (12) whether the feedback signal is sent to the at least one portable feedback device (14).

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