阅读说明：本技术 车辆以及车辆内部用于信号转换的微机电系统装置 (Vehicle and micro-electromechanical system device for signal conversion in vehicle ) 是由 克里斯托夫·阿恩特德尔哈比尔 弗雷德里克·斯蒂芬 乌维·盖森 弗兰克·佩特里 于 2020-02-29 设计创作，主要内容包括：提供一种在车辆内部用于信号转换的微机电系统的装置(202),该装置具有多个微机电系统(100),每个微机电系统具有至少一个信号转换单元(101)和至少一个通信单元(102)。进一步地,装置(202)包括控制装置(205),并且多个微机电系统(100)配置用于向控制装置(202)通信信号。将多个微机电系统(100)设置在车辆内部(201)中,以及信号与车辆内部(201)的至少一个状态参数相关。此外,还提供了具有车辆内部(201)的车辆(200),该车辆具有这样的装置(202)。(An arrangement (202) of microelectromechanical systems for signal conversion in a vehicle interior is provided, having a plurality of microelectromechanical systems (100), each having at least one signal conversion unit (101) and at least one communication unit (102). Further, the device (202) comprises a control device (205), and the plurality of micro-electromechanical systems (100) are configured to communicate signals to the control device (202). A plurality of micro-electromechanical systems (100) are arranged in the vehicle interior (201), and the signal is related to at least one state parameter of the vehicle interior (201). Furthermore, a vehicle (200) having a vehicle interior (201) is provided, which vehicle has such a device (202).)

1. An arrangement (202) of a micro-electromechanical system for signal conversion in a vehicle interior, comprising:

-a plurality of micro-electromechanical systems (100), the micro-electromechanical systems (100) each having at least one signal conversion unit (101) and a communication unit (102); and

-control means (205); wherein the plurality of micro-electromechanical systems are configured to communicate signals with the control device (205), characterized in that the plurality of micro-electromechanical systems are disposed in a vehicle interior (201) and the signals are related to at least one state parameter of the vehicle interior (201).

2. The device according to claim 1, wherein the length of the microelectromechanical system (100) in each case in any dimension does not exceed 3 mm.

3. The apparatus of claim 1 or claim 2, wherein the microelectromechanical systems (100) are each configured to communicate with at least the microelectromechanical system adjacent to one or more of the plurality of microelectromechanical systems.

4. The arrangement according to any of the preceding claims, wherein at least one adhesive part (203) of the plurality of micro electro mechanical systems is provided on a common carrier element, which can be adjusted in a flexible manner to the inner surface area of the vehicle interior (201).

5. The device according to claim 4, wherein the carrier element is provided with a bond coat for bonding with the inner surface area of the vehicle interior (201).

6. The apparatus of claim 4 or claim 5, wherein a common power supply of the microelectromechanical systems of the bonded portions of the plurality of microelectromechanical systems is disposed on the carrier element.

7. The apparatus according to any of the preceding claims, wherein the signal conversion unit (101) of the first part of the plurality of micro-electromechanical systems is configured for receiving a received signal from the vehicle interior (201) and converting the received signal into an electrical signal.

8. The apparatus of claim 7, wherein the signal conversion unit (101) of the first part (203) of the plurality of micro-electromechanical systems comprises a correlation filter designed for filtering the electrical signal.

9. The apparatus of any of the preceding claims, wherein the signal conversion unit (101) of the second part (204) of the plurality of micro-electromechanical systems is configured to convert an electrical signal into an output signal and to output the output signal into the vehicle interior (201).

10. The apparatus of any of the preceding claims, wherein the signal conversion units of a third portion of the plurality of micro-electromechanical systems are configured to receive a received signal from the vehicle interior (201) and convert the received signal to an electrical signal in a first mode of operation, and to convert the electrical signal to an output signal and output the output signal to the vehicle interior (201) in a second mode of operation.

11. The apparatus of any of the preceding claims, wherein the signal conversion unit (101) of at least one of the plurality of microelectromechanical systems comprises an ultrasonic sensor.

12. The apparatus of claim 9, wherein the signal conversion unit (101) of the second part (204) of the plurality of micro-electromechanical systems comprises a speaker unit designed for outputting an audio signal into the vehicle interior.

13. The device according to claim 12, wherein the control device (205) is configured to drive the speaker unit at least based on an occupant occupancy information item to improve the sound emitted by the speaker unit for an occupant in the vehicle interior (201).

14. The device according to claim 12 or claim 13, wherein the control device (205) is configured to drive the speaker unit to reduce the level of disturbance in the vehicle interior (201) by adaptive noise compensation.

15. The apparatus of any of the preceding claims, wherein the control apparatus (205) is configured to drive the signal conversion units (101) of the plurality of microelectromechanical systems in a manner that causes at least one selected portion of the signal conversion units (101) to interact as a beam shaper.

16. The apparatus of claim 15, wherein the control means (205) is configured to dynamically change the beam shaping direction of the beam shaper.

17. A vehicle (200) having a vehicle interior (201), the vehicle (200) comprising an apparatus (202) according to any one of the preceding claims.

Technical Field

The invention relates to a microelectromechanical system device for signal conversion in a vehicle interior. The invention further relates to a vehicle having a vehicle interior, which vehicle has such a device.

Background

Vehicles, in particular motor vehicles, such as passenger motor vehicles, heavy goods vehicles and buses, usually have a vehicle interior or cabin, the state of which can be monitored by various sensors and influenced by various means. For example, the internal temperature may be measured and changed, music may be output from a radio speaker, a driver assistance system may monitor the driver's view, a safety system may detect a broken glass condition in the event of a forced entry, etc. Depending on the available sensors, various state variables of the vehicle interior can be detected for this purpose, for example state variables which are relevant to comfort, for example seat occupancy, acoustic models of the vehicle interior, temperature profiles of the vehicle interior or operating states of the air conditioning system, and also state variables which are relevant to safety, for example glass breakage by detecting acoustic reflections or recording movements of the vehicle interior. Furthermore, vehicle interior state parameters which are relevant to the vehicle dynamics, such as the weight and load capacity of persons and the weight distribution in the vehicle interior, can also be detected. Vehicle interior state parameters related to driving safety, such as occupant size, may also be detected to optimize the positioning of the seat belt and headrest.

In general, all these state parameters or many of them are detected by very different sensor systems, which are suitable for the respective task and not for other tasks. For example, the occupant size may be detected by an interior camera. However, it cannot be used to identify, for example, an acoustic model of the vehicle interior. Furthermore, depending on the type of sensor used, the feasibility of providing the same sensor system inside the vehicle is mainly limited by structural limitations and the like, as a result of which the sensitivity of the sensor system is not equally good for each monitored location inside the vehicle. Furthermore, other devices that influence the vehicle interior state parameters than those used for detection are often required.

Disclosure of Invention

It is an object of the invention to provide an improved option by means of which at least different state parameters of the vehicle interior can be detected.

The object according to the invention is achieved by a microelectromechanical systems device for signal conversion in a vehicle interior according to claim 1 and a vehicle according to claim 17. The dependent claims list advantageous developments of the invention.

According to an aspect of the invention, a microelectromechanical systems device for signal conversion in a vehicle interior comprises a plurality of microelectromechanical systems (MEMS), each having at least one signal conversion unit and at least one communication unit. In addition, the apparatus includes a control device, and the plurality of micro-electromechanical systems are configured to communicate signals to the control device. The method includes positioning a plurality of micro-electromechanical systems within a vehicle interior and setting a signal to be related to at least one state parameter within the vehicle interior.

Microelectromechanical Systems (MEMS) are miniaturized devices or components in the low millimeter range (even in the micrometer range) and offer advantages such as that they are hardly restricted in any place due to their small size and can be arranged almost on a surface as required. Sensors may also be used in MEMS structures, such as the ultrasonic sensors described in "chirped microsystems introduction to high precision contactless ultrasound sensing wearable device in mobile world congress 2017" published on markwired.com, 2/28.2017 as runtime sensors, or MEMS described as "Smart dust" in "Smart dust base, assembly, application, advantage, disadvantage" (http:// www.rfwireless-world.com/telecommunications/Smart-dumt-components-applications-adaptive-additives. Capacitive ultrasonic transducers (CMUT-capacitive micro-electromechanical ultrasonic transducers) in MEMS structures are also generally described in "overview and advantages of CMUT" (https:// web. archive. org/web/20110720050202/http:// www-kyg. stanford. edu/k horiyakub/opencms/en/research/cmst/general/index. html), stanford university, originating from 2011 20 days (http:// www-kyg. stanford. edu/khuriyakub/opencms/en/research/cms/general/index. html).

Such small devices can be arranged in almost any desired position in the vehicle interior, even if in large numbers, without adversely affecting the normal functioning of the vehicle interior for the occupant or occupants, for example by obstructing the view or the low available space. Mems devices are virtually invisible and thus do not require adjustments to the vehicle interior design.

In this case, the vehicle interior represents, in particular, the vehicle cabin in which the occupant is located. However, in other embodiments, the vehicle interior also includes other interior or hollow spaces of the vehicle, such as the trunk, storage space, and engine compartment (i.e., the space under the hood of the motor vehicle).

The signal conversion unit of the micro electro mechanical system receives signals such as sound, ultrasonic waves, infrared radiation, radio waves, pressure changes, etc. from the interior of the vehicle and converts them into electrical signals and/or converts them into signals that are transmitted to the interior of the vehicle. The signals are communicated by means of a communication unit comprising at least one communication interface, such as a wireless communication interface for transmitting and/or receiving electromagnetic waves, laser beams, etc., i.e. transmitting received signals to and/or receiving control signals from the control device in accordance with the operation mode of the signal conversion unit.

The control device is an electrical or electronic circuit or programmable device having at least a processor and a memory, the control device being configured to directly or indirectly drive a micro-electromechanical system (MEMS) through a separate communication interface, such that the MEMS collectively implement one or more sensor or signal output functions. In a specific embodiment, the control device itself is implemented by one or more MEMS. To this end, in one embodiment, the microelectromechanical system has a separate data processing unit or programmable device, such as a separate small signal processor.

Multiple micro-electromechanical systems may be driven in a single array by a control device. However, individual portions or subsets of the plurality of MEMS may also be driven in separate arrays, e.g., with different measurements being performed by the arrays. Thus, the use of multiple MEMS opens the opportunity to use the same components in multiple ways. The plurality of microelectromechanical systems in their entirety or at least a part thereof (i.e. a subset thereof) may thus in particular form a multisensor array, wherein a state variable inside the vehicle is detected by the plurality of MEMS, but depending on the embodiment also a plurality of state parameters, for example different physical variables or the same measured variable at different measuring areas and/or from a plurality of different areas inside the vehicle, may be detected by different parts of the plurality of microelectromechanical systems (i.e. multisensor array).

Depending on the MEMS signal conversion units used and their number and positioning in the vehicle interior, it is also possible to continuously monitor the entire interior of the three-dimensional vehicle in order to identify and take into account, for example, the number of occupants, the load distribution or real-time changes in the vehicle interior equipment (e.g. further seat covers, further loudspeakers, child seats, etc.).

Due to the feasibility of free placement of the MEMS and signal converter, a quasi-continuous sensing field can be established, increasing the sensor aperture, and the sensor aperture can also be designed to be controllable in case of beam shaping. Such a device can monitor, for example, the mass distribution in the vehicle interior in a monitoring mode and detect unauthorized access to the vehicle interior in an anti-theft mode. The control device may be designed to evaluate the signals obtained with such a sensor array, for example, according to methods such as Principal Component Analysis (PCA), multiple signal classification (MUSIC), estimation of signal parameters by rotation invariance techniques (ESPRIT), or extensions of the above-mentioned methods.

In one embodiment, the length of the microelectromechanical system (MEMS) in each case does not exceed 3 millimeters in any dimension. Said micro-electromechanical system is preferably even smaller than 1.5 mm, even smaller than 1 mm, or in the micrometer range. The term "dimension" herein denotes the length, width and height of the MEMS and, where appropriate, the diameter.

In an embodiment, the micro-electromechanical systems (MEMS) are each configured to communicate with at least one or more neighboring micro-electromechanical systems of the plurality of micro-electromechanical systems. This includes that the control device in some cases also does not communicate directly with all the MEMS at the same time, but only with one or a selected subset, and then passes the commands from the MEMS further to the MEMS, so that the control device communicates indirectly with most of the MEMS and prevents as much as possible direct communication with the control device, thereby reducing the energy of the required transmission intensity and reducing the need for a source of MEMS energy. Sensors of this size (especially when they can communicate with the control device or each other as a sensor network) are sometimes also referred to as "smart dusts". In one embodiment, at least some of the MEMS used have a separate data processing unit or programmable device for this purpose, for example a separate small signal processor.

In a preferred embodiment, at least one adhesive part of a plurality of micro-electromechanical systems (MEMS) is arranged on a common carrier element which can be adjusted to the inner surface area of the vehicle interior in a flexible manner. For example, the carrier element may be a film or a tape to which a portion of the plurality of microelectromechanical systems is applied (e.g., adhesively bonded). The carrier element itself can also be part of an interior trim, for example a seat, a door or a roof covering, a trim strip or a trim piece. With the MEMS arranged on the common carrier element, handling thereof during the arrangement in the vehicle interior is significantly simplified. Thus, the strip may be mounted on the roof of the vehicle interior, along the interior lighting and/or along the vehicle pillars, for example at least along the B-pillars and the C-pillars. This provides the advantage that the interior of the vehicle can be monitored completely in a simple manner.

In one exemplary embodiment, the carrier member is provided with a bond coat for bonding with an interior surface region of the vehicle interior. In this way, the MEMS can also be retroactively mounted in a very simple manner in almost any desired location or location which is particularly suitable for the intended use.

In one embodiment, the MEMS each have a separate small energy storage unit, such as a capacitor or a battery, which can be charged by, for example, a photoelectric conversion unit or a photodiode. In another embodiment, a common power supply of the microelectromechanical systems of the bonding portion of the plurality of microelectromechanical systems is disposed on the carrier element. In this way, the necessary energy supply can be efficiently achieved. For example, a slightly larger common battery may be integrated into the carrier element or connected to a battery provided for the MEMS, or the power supply of the vehicle may be provided above the carrier element or hidden below the carrier element.

In one embodiment, the signal conversion unit of the first portion of the plurality of micro-electromechanical systems is configured to receive a received signal from the vehicle interior and convert it to an electrical signal. The received signal from the vehicle interior may be an ultrasonic wave, an infrared wave, a visible light, an acoustic signal, or an electromagnetic wave, such as a radio wave or the like. In order to transmit the electrical signal or the signal generated thereby to the control device via the communication unit, the electrical signal is converted into an electromagnetic wave or a laser signal as necessary, depending on the design of the communication unit. In the described embodiment, the first part of the plurality of micro-electromechanical systems forms a multi-sensor array by which the ultrasonic waves emitted by the transmission unit can be received and, for example, the reflection position of object detection (e.g. occupant or object detection) can be identified from the strength of the received signal and the position of the receiving sensor, or other physical variables such as local temperature or humidity can be identified by the reflection type.

In a preferred exemplary embodiment, the signal conversion unit of the first part of the plurality of microelectromechanical systems comprises a correlation filter, i.e. a "matched filter" or a signal adaptation filter, designed to filter the electrical signal in order to increase the signal-to-noise ratio (SNR) and thus the feasible resolution of the sensor.

In another embodiment, the signal conversion unit of the second portion of the plurality of micro electro mechanical systems is configured to convert the electrical signal into an output signal and output the output signal to the vehicle interior. In this way, it is possible to realize, for example, an active sensor system in which the signal conversion units of the second part of the plurality of microelectromechanical systems output signals, for example ultrasonic signals, the reflected components of which are then received by the signal conversion units of the first part of the plurality of microelectromechanical systems. Furthermore, the state of the vehicle interior can be actively influenced by the signal conversion units of the second part of the plurality of micro-electromechanical systems. For example, a signal conversion unit designed for outputting an audio signal (i.e. an audible sound signal) may thus be provided.

In another embodiment, the signal conversion unit of the third portion of the plurality of micro electro mechanical systems is configured to receive a reception signal from the vehicle interior and convert it into an electrical signal in the first operation mode, and convert the electrical signal into an output signal and output it to the vehicle interior in the second operation mode. Instead of providing different MEMS for the output and reception of signals, the signal conversion unit is here designed for transmitting and receiving signals, for example ultrasound. Depending on the embodiment, the switching between the operating modes is controlled by the respective micro-electromechanical system itself or by control signals from the control means. Especially for the first mode of operation, in which signals are received from the vehicle interior, it is set in one embodiment to filter the input signal to improve reception, especially by using a correlation filter.

In a preferred embodiment, the signal conversion unit of at least one of the plurality of microelectromechanical systems comprises an ultrasonic sensor. Depending on the embodiment, the signal conversion units of the plurality of microelectromechanical systems or of all of the plurality of microelectromechanical systems may also have ultrasonic sensors. For example, the ultrasonic sensor may be a piezoelectric, in particular a capacitive microelectromechanical ultrasonic sensor (CMUT-capacitive microelectromechanical ultrasonic sensor). They have hollow spaces, membranes and electrodes, and can be produced using conventional integrated circuit production methods. Therefore, they are inexpensive and require little electrical energy for operation. MEMS with such an ultrasonic sensor enable many positions of the vehicle interior to be located in a simple manner. For example, MEMS with such an ultrasonic sensor can be used for complete ultrasonic monitoring of the vehicle interior.

In another exemplary embodiment, the signal conversion units of at least a second portion of the plurality of micro-electromechanical systems (MEMS) are not ultrasonic sensors. Conversely, the signal conversion unit of the second part of the plurality of micro-electromechanical systems includes a speaker unit designed to output an audio signal to the vehicle interior. In this way, due to the arrangement of the MEMS, the sound output for the occupant can be improved, and the perceptibility of audio signals (e.g., acoustic warning signals) can be ensured even at a lower volume.

In one exemplary embodiment, the control device is configured to drive the speaker unit based on at least the passenger occupancy information item such that the sound emitted by the speaker unit is improved for the passenger inside the vehicle. In this case, in one embodiment, the occupant occupancy information item is likewise obtained by evaluation of signals which are generated by other MEMS sensors (for example ultrasonic sensors) in the vehicle interior. In another embodiment, not only the position of the occupant is identified, but also the internal configuration or shape, or other items inside, such as luggage, etc. The loudspeaker unit in the MEMS embodiment is used in order to dynamically optimize the sound distribution inside the vehicle taking into account the current occupant occupancy information and occupancy information on other objects.

In another exemplary embodiment, the control device is configured to drive the loudspeaker unit such that the interference level inside the vehicle is reduced by means of adaptive noise compensation. In this case, it is also preferable to take into account, in particular, the local distribution of the disturbance level inside the vehicle. This is recognized by suitable acoustic MEMS signal conversion units which are distributed in the vehicle interior and are at least also designed for microphone reception. Due to the feasible high resolution and arrangement of the loudspeaker units, which preferably cover the entire vehicle interior, the interference compensation may optimize a plurality of positions of the vehicle interior, for example the head position of the occupant.

In an embodiment the control means is arranged for driving the signal conversion units of the plurality of micro-electromechanical systems in such a way that at least a selected part of the signal conversion units interact as a beam shaper. Depending on the embodiment, transmit beam shaping or receive beam shaping or both may be provided. In this way, for example, when using an ultrasonic wave conversion unit, the direction and the restriction of the object and the occupant inside the vehicle can be determined in a simple manner with high accuracy, in order to more accurately recognize, for example, an occupant occupancy information item or a size information item about the occupant, the object, or a specific form of the vehicle interior, or the direction of the head or the viewing direction of the driver. Receive beam shaping is used to detect the location of "emitting sources" (e.g., breaking a glass window) or reflections, while transmit beam shaping (in combination with one or more receivers) may be used, for example, to monitor selected areas within the vehicle (e.g., occupant seating).

In an exemplary embodiment, the control means is configured to dynamically change the beam shaping direction of the beam shaper, or to change its direction over time. In this way, it is possible, for example, to realize a spatially monitored light beam which is moved, for example, in a circular manner inside the vehicle, so that changes in the position of occupants and objects inside the vehicle can be detected accurately and quickly.

According to another aspect of the invention, a vehicle is provided having a vehicle interior, the vehicle comprising an arrangement of a micro-electromechanical system for signal conversion in the vehicle interior according to one of the above-described embodiments. The advantages and the specific features of the inventive device for microelectromechanical systems for signal conversion in a vehicle interior are thus also implemented in the context of a vehicle having such a device.

Drawings

Further advantages of the invention will appear from the more detailed description and the accompanying drawings. The invention is explained in more detail below in connection with the following description of exemplary embodiments with reference to the drawings, in which:

FIG. 1 shows a schematic diagram of an example of a possible structure of a micro-electromechanical system for signal conversion inside a vehicle;

FIG. 2 shows a schematic representation of a vehicle having a vehicle interior with an arrangement of a micro-electromechanical system for signal conversion in the vehicle interior according to the invention in an exemplary design; and

fig. 3 shows a schematic representation of a vehicle interior with a mems device for signal conversion according to the invention in another exemplary embodiment.

Detailed Description

It is to be understood that other embodiments may be utilized and structural or logical changes may be made without departing from the scope of the present invention. It will be apparent that features of the various exemplary embodiments described above and below may be combined with each other unless specifically noted otherwise. The description is therefore not to be taken in a limiting sense, and the scope of the present invention is defined by the appended claims.

Fig. 1 shows a schematic diagram of an example of a possible structure of a micro-electromechanical system for signal conversion in a vehicle interior. The mems 100 is no larger than 3 mm in any dimension and has a signal conversion unit 101 through which an electrical signal is converted into an output signal. In the example shown, the signal conversion unit 101 is a capacitive ultrasonic sensor which converts electrical signals into ultrasonic signals in a first operation mode and converts received ultrasonic signals into electrical signals in a second operation mode.

The mems 100 shown also has a communication unit 102 by which control signals and received sensor signals can be communicated to another adjacent mems or directly to a control device. The communication unit 102 is designed to perform wireless communication using electromagnetic waves or laser signals.

The shown micro-electromechanical system 100 also has a data processing unit 103, for example a signal processor, which, in addition to controlling the transmission and reception mode, is equipped with a signal filter by means of which the electrical signals converted from the received signals of the signal conversion unit can be filtered in a correlated manner. In another embodiment, the correlation filtering is directly implemented by a part of the signal conversion unit.

In addition, the MEMS is shown with a separate power supply. The photoelectric conversion unit 104 is configured to convert incident light into electric energy and store it in an energy storage unit 105 in the form of a battery or a capacitor. The signal conversion unit 101, the communication unit 102, and the data processing unit 103 are powered by the above-described electric power.

Fig. 2 shows a schematic illustration of a vehicle 200 with a vehicle interior 201 in an exemplary design, the vehicle 200 having a micro-electromechanical system device 202 for signal conversion in the vehicle interior. In one aspect, the MEMS device 202 for signal conversion within a vehicle interior comprises a plurality of micro-electromechanical systems (MEMS), as shown in FIG. 1. The MEMS, each having at least one signal conversion unit and communication unit, are not separately shown in fig. 2. A plurality of MEMS are introduced into the vehicle interior on a carrier element. A first portion 203 of the plurality of mems is attached to a roof of the vehicle interior 201 in the driver position area. A second portion 204 of the plurality of mems is attached to the roof of the vehicle interior 201 in the passenger area (not shown) of the rear row of seats. Another portion of the plurality of MEMS devices is disposed within the vehicle interior, but is not shown in FIG. 2. On the other hand, the mems device 202 for signal conversion in the vehicle interior comprises a control device 205. In this embodiment, the control device 205 itself is not a micro-electromechanical system. However, in other embodiments, the control device 205 may be configured as a MEMS. The control device 205 has a programmable device (not shown) having a processor and a memory. When executed by the processor, the program code stored in the memory causes the control device 205 to communicate signals to at least one of the microelectromechanical systems, such as the first part 203 of the plurality of microelectromechanical systems, via the communication interface 206, wherein the communication from the control device 205 and to the control device 205 with respect to the MEMS is not achieved by direct communication with the control device, but by forwarding communication signals between adjacent MEMS through the communication unit of the MEMS. Accordingly, the plurality of micro-electromechanical systems are configured to communicate signals to the control device 205 directly or indirectly through the other MEMS.

In the example shown, the MEMS signal conversion unit arranged inside the vehicle is a capacitive ultrasonic sensor (CMUT), in which ultrasonic waves are transmitted in a transmission mode by the ultrasonic sensor, reflected by its inner surface and by occupants and other objects (not shown) in the vehicle interior 201, and received by the ultrasonic sensor in a reception mode. Thus, the received signals are related to the surface and objects of the vehicle interior 201 and, thus, the state parameters of the vehicle interior 201. The received ultrasonic signals are converted into electrical signals by a signal conversion unit and evaluated or filtered by a MEMS signal processor. The evaluated single received signal is then sent in a receive mode by the signal conversion unit to the control device 205 to evaluate the signal of the entire MEMS array.

Fig. 3 shows a schematic illustration of a vehicle interior 301 of an exemplary design, which has a mems device for signal conversion in the vehicle interior according to the invention. The vehicle interior 301 of the vehicle, which is shown in a partial view from the inside, has a vehicle seat 302 and a passenger seat 303, wherein the mems device for signal conversion in the vehicle interior is specifically designed to detect (in particular position determination) and to change (in particular by interference compensation based on the position of the passenger and sound improvement for optimizing the audio output in the vehicle interior) state parameters of the vehicle interior 301, which take into account the position of the driver and the passenger by receiving ultrasonic signals and audio signals, for example, by transmission and reflection.

In the exemplary embodiment shown, the mems device for signal conversion in the vehicle interior, which is installed in the vehicle interior, comprises a control device 304 having at least one communication interface (not shown) and a plurality of mems. In the example shown, different portions of the plurality of micro-electromechanical systems are applied to different surfaces on a carrier element of the vehicle interior 301 in the form of stripes having an adhesive coating. A first strip 305 having one portion of the plurality of mems is mounted on the left a-pillar 306, a second strip 307 having another portion of the plurality of mems is mounted on the right a-pillar 308, a third strip 309 having another portion of the plurality of mems is mounted on the driver door panel 310, a fourth strip 311 having the plurality of mems is mounted on the passenger door panel 312, a fifth strip 313 having another portion of the plurality of mems is mounted on the armrest 314 between the driver seat 302 and the passenger seat 303, and a sixth strip 315 having another portion of the plurality of mems is mounted on the instrument panel 316. For a ribbon having another portion of multiple microelectromechanical systems, another location and/or alternative locations are possible.

The figures are not necessarily to scale and are drawn to scale in all details and may be shown exaggerated or reduced in scale to provide a better overview. Therefore, functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the description to provide those skilled in the art with a general purpose teaching of practicing the invention.

The term "and/or" in the context of a series of two or more elements means that each of the elements may be used alone or in any combination of two or more of the elements. For example, if a configuration is described in a manner that includes component A, B and/or C, the configuration can include a alone, B alone, a combination of C, A and B alone, a combination of a and C, a combination of B and C, or a combination of A, B and C.

Although the invention has been illustrated and described in more detail on the basis of preferred exemplary embodiments, the invention is not limited to the disclosed examples and other modifications can be made by a person skilled in the art without departing from the scope of protection of the invention. Accordingly, the present invention is not intended to be limited to the embodiments but only by the appended claims.

List of reference numerals

100 micro-electromechanical system

101 signal conversion unit

102 communication unit

103 data processing unit

104 photoelectric conversion unit

105 power storage unit

200 vehicle

201 vehicle interior

202 micro-electro-mechanical system device

203 first part of multiple micro-electromechanical systems

204 second part of the plurality of micro-electromechanical systems

205 control device

206 communication interface

301 vehicle interior

302 driver's seat

303 passenger seat

304 control device

305 a first strip having a portion of a plurality of MEMS

306 left A column

307 second strip having another portion of the plurality of MEMS

308 right A column

309 has a third strip of another part of the plurality of MEMS

310 driver door panel

311 fourth strip with another portion of multiple MEMS

312 passenger door panel

313 fifth strip with another portion of the plurality of MEMS

314 armrest

315 sixth strip having another portion of the plurality of MEMS

316 dashboard