WO2021134269A1

WO2021134269A1 - On-board device

Info

Publication number: WO2021134269A1
Application number: PCT/CN2019/130049
Authority: WO
Inventors: 秦英明; 谢兵; 高雪丽
Original assignee: 瑞声声学科技(深圳)有限公司; 瑞声科技(新加坡)有限公司
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2021-07-08

Abstract

An on-board device comprises a processing unit (2) electrically connected to a central control platform (1), an on-board sensor (3) electrically connected to the central control platform (1) and the processing unit (2), a motor drive unit (4) electrically connected to the processing unit (2), and a tactile feedback unit (5) electrically connected to the processing unit (2) and the motor drive unit (4). The on-board sensor (3) is used to send detected sensor data to the central control platform (1) and/or the processing unit (2). The central control platform (1) and/or the processing unit (2) is used to acquire, on the basis of the sensor data, a tactile feedback signal matching the sensor data and send the tactile feedback signal to the motor drive unit (4). The motor drive unit (4) is used to amplify the tactile feedback signal and send same to the tactile feedback unit (5). The tactile feedback unit (5) is used to execute the received tactile feedback signal so as to provide tactile feedback. Compared to the prior art, the invention provides an on-board device capable of implementing tactile feedback that is practically applicable to vehicles.

Description

On-board device

Technical field

The present invention relates to the field of automobiles, and in particular to a vehicle-mounted device.

Background technique

Haptics (haptics feedback) are usually used in mobile phones, but there is a demand for haptics feedback applications in the automotive industry. At present, solenoid valves are mainly used in mobile phones to achieve single effect and complex structure. Because the components used in the tactile feedback solution on mobile phones are very different from the car-level components that can be used on automobiles, it is impossible to integrate The tactile feedback solution on the mobile phone is applied to the car.

Therefore, it is necessary to provide a solution for implementing tactile feedback in automobiles.

technical problem

The purpose of the present invention is to provide a vehicle-mounted device, which is used to solve the problem that tactile feedback cannot be realized on automobiles in the prior art.

Technical solutions

The technical solution of the present invention is as follows: a vehicle-mounted device, the vehicle-mounted device includes a central control platform, the vehicle-mounted device further includes: a processing unit electrically connected to the central control platform, and the central control platform and the processing unit An on-board sensor electrically connected to the unit, a motor drive unit electrically connected to the processing unit, and a tactile feedback unit electrically connected to the processing unit and the motor drive unit;

The vehicle-mounted sensor is used to detect sensing data and send the detected sensing data to the central control platform and/or the processing unit;

The central control platform and/or the processing unit are configured to obtain a tactile feedback signal matching the sensing data based on the sensing data, and send the tactile feedback signal to the motor driving unit;

The motor drive unit is used to amplify the tactile feedback signal and send it to the tactile feedback unit;

The tactile feedback unit is used to execute the received tactile feedback signal to realize tactile feedback.

Further, the number of the motor drive units is at least two, the processing unit and the motor drive unit have a one-to-many correspondence relationship, and the motor drive unit and the tactile feedback unit have a one-to-one correspondence relationship, And close to the tactile feedback unit.

Further, the number of the motor drive unit is one, the processing unit and the motor drive unit have a one-to-one correspondence, and the motor drive unit and the tactile feedback unit have a one-to-many correspondence. , And the motor drive unit is close to the processing unit.

Further, the processing unit includes: an excitation control module electrically connected to the on-board sensor, the central control platform, and the motor drive unit, and an excitation control module electrically connected to the excitation control module and storing a variety of different tactile sensations. The effect library module of the tactile feedback signal of the effect;

The excitation control module is used to obtain corresponding tactile feedback signals from the effect library module based on the sensing data.

Further, the processing unit further includes a digital-to-analog conversion module electrically connected to the excitation control module, and the vehicle-mounted device further includes a DC-blocking processing module located between the digital-to-analog conversion module and the motor drive unit.

Further, the processing unit further includes a pulse width modulation module electrically connected to the excitation control module, and the vehicle-mounted device further includes a low frequency filter module located between the pulse width modulation module and the motor drive unit.

Further, the processing unit further includes a bidirectional two-wire synchronous serial bus I2C interface provided on the excitation control module, and the motor drive unit is electrically connected to the I2C interface.

Further, the processing unit further includes an integrated circuit built-in audio bus I2S interface provided on the excitation control module, and the motor drive unit is electrically connected to the I2S interface.

Further, the tactile feedback unit includes: a display screen, a touch pad, buttons, a car seat, and a steering wheel. The display screen, touch pad, and buttons are triggered by a hardware excitation method. The steering wheel is used to respond.

Further, the motor drive unit has a transient power of at least 8W/10ms.

Beneficial effect

The beneficial effects of the present invention are: the vehicle-mounted device includes a processing unit electrically connected to the central control platform, an on-vehicle sensor electrically connected to the central control platform and the processing unit, a motor drive unit electrically connected to the processing unit, and the processing unit and the motor drive unit An electrically connected tactile feedback unit, the vehicle-mounted sensor is used to send the detected sensing data to the central control platform and/or processing unit, and the central control platform and/or processing unit is used to obtain tactile feedback matching the sensing data based on the sensing data Signal, send the tactile feedback signal to the motor drive unit, which is used to amplify the tactile feedback signal and send it to the tactile feedback unit. The tactile feedback unit is used to execute the received tactile feedback signal to achieve tactile feedback. In the prior art, an in-vehicle device for realizing tactile feedback that can be effectively applied to automobiles is provided.

Description of the drawings

FIG. 1 is a schematic diagram of the framework of a vehicle-mounted device in an embodiment of the present invention;

2 is another schematic diagram of the frame of the vehicle-mounted device in the embodiment of the present invention;

Figure 3 is a schematic diagram of the connection between the processing unit and the motor drive unit in the embodiment of the present invention;

4 is another schematic diagram of the connection mode of the processing unit and the motor drive unit in the embodiment of the present invention;

5 is another schematic diagram of the connection mode of the processing unit and the motor drive unit in the embodiment of the present invention;

Fig. 6 is another schematic diagram of the connection between the processing unit and the motor drive unit in the embodiment of the present invention.

Embodiments of the present invention

The present invention will be further described below in conjunction with the drawings and embodiments.

Please refer to FIG. 1, which is a schematic diagram of a framework of an in-vehicle device in an embodiment of the present invention. The in-vehicle device is applied to a car and is used to implement tactile feedback on the car. The vehicle-mounted device includes a central control platform 1, a processing unit 2 electrically connected to the central control platform 1, an on-board sensor 3 electrically connected to the central control platform 1 and the processing unit 2, and a motor drive unit 4 electrically connected to the processing unit 2 , The tactile feedback unit 5 electrically connected to the processing unit 2 and the motor drive unit 4.

Among them, the vehicle-mounted sensor 3 is specifically used to obtain sensing data and send the sensing data to the central control platform 1 and/or the processing unit 2.

The central control platform 1 and/or the processing unit 2 are configured to obtain a tactile feedback signal matching the sensing data based on the sensing data, and send the tactile feedback signal to the motor driving unit 4.

The motor driving unit 4 is used to amplify the tactile feedback signal and send it to the tactile feedback unit 5.

The tactile feedback unit 5 receives the tactile feedback signal, and executes the received tactile feedback signal to realize the tactile feedback.

In the embodiment of the present invention, by using the vehicle-mounted sensor 3, the processing unit 2, the motor drive unit 4, the haptic feedback unit 5 and the central control platform 1 to form a vehicle-mounted device, the haptic feedback can be effectively implemented on the car.

Based on the embodiment shown in FIG. 1, it should be noted that there are at least two situations for the arrangement of the above-mentioned motor drive unit 4, which will be described separately below.

In a feasible implementation, as shown in FIG. 1, the number of motor drive units 4 is at least two, wherein the processing unit 2 and the motor drive unit 4 have a one-to-many correspondence relationship, and the motor drive unit 4 and the motor drive unit 4 have a one-to-many correspondence relationship. The tactile feedback unit 5 has a one-to-one correspondence, and in order to realize the one-to-one correspondence, the motor driving unit 4 is arranged close to the tactile feedback unit 5 when it is installed. For example, it may be located anywhere on the periphery of the tactile feedback unit 5 or integrated with the tactile feedback unit 5. It should be noted that in FIG. 1, the vehicle-mounted device includes four motor drive units 4 as an example for description. In practical applications, the number of motor drive units 4 can be set according to specific needs, which is not limited here.

In another feasible implementation manner, the number of the motor drive unit 4 may be one. Please refer to FIG. 2, which is another schematic diagram of the frame of the vehicle-mounted device in the embodiment of the present invention. The vehicle-mounted device includes a central control platform 1, and The processing unit 2 electrically connected to the central control platform 1, the on-board sensor 3 electrically connected to the central control platform 1 and the processing unit 2, and the motor drive unit 4 electrically connected to the processing unit 2, wherein the processing unit 2 and the motor drive unit 4 have In a one-to-one correspondence, the motor drive unit 4 and the tactile feedback unit 5 have a one-to-many correspondence relationship, and the motor drive unit 4 is arranged close to the processing unit 2. In a specific implementation, the motor drive unit 4 can be arranged at any position around the processing unit 2, or the motor drive unit 4 can be integrated with the processing unit 2. It should be noted that the haptic feedback unit 5 in FIG. 2 includes multiple units, and the motor drive module is electrically connected to the multiple haptic feedback units 5, respectively. The units A to D shown in FIG. 2 indicate multiple units. The tactile feedback unit 5 is electrically connected to the motor drive unit 4, respectively.

In the above embodiment, the on-board sensor 3 includes a variety of different types of sensors, for example, it can be a pressure sensor, a capacitance sensor, a rotation angle sensor, a vision sensor, a temperature sensor, etc., by using a variety of different types of on-board sensors 3 , Can realize tactile feedback in a variety of different application scenarios, and for different vehicle sensors 3, it can send the sensed data to the central control platform 1; can send the sensed data to the processing unit 2, It is also possible to send the sensed data to the central control platform 1 and the processing unit 2 at the same time. In practical applications, the sending mode of the sensing data sensed by the on-board sensor 3 can be determined according to specific conditions. For example, for a temperature sensor set to detect the temperature of the engine cooling water of a car, the temperature value detected by the temperature sensor can be directly sent to the central control platform 1, and the central control platform 1 determines whether the detected temperature value is greater than the preset temperature Threshold, if it is greater than the preset temperature threshold, an indication signal is sent to the display screen or indicating device. The indication signal is used to indicate that the temperature of the engine cold water exceeds the preset temperature threshold. At the same time, the central control platform 1 will also send to the processing unit 2. For the tactile feedback instruction of the temperature value, the processing unit 2 obtains the matched tactile feedback signal based on the tactile feedback instruction, and sends the tactile feedback signal to the corresponding tactile feedback unit 5. The tactile feedback unit 5 executes the tactile feedback signal to achieve Haptic feedback.

For another example, for a rotation sensor set to detect the angle change of a car knob, after the rotation sensor senses the change of the knob, it obtains the changed position value, including the current position, and the increased or decreased angle value. And so on, send the position value to the processing unit 2, the processing unit 2 will make corresponding settings according to the position value, for example, increase or decrease the sound of the speaker, at the same time, the processing unit 2 will also obtain the corresponding tactile sensation based on the position value The tactile feedback signal is sent to the corresponding tactile feedback unit 5, and the tactile feedback unit 5 executes the tactile feedback signal. The tactile feedback unit 5 may be the above-mentioned knob, so that the user can change the setting parameters through the knob at the same time, You can feel the tactile feedback to confirm the parameter setting is successful.

For another example, for a pressure sensor set on the display screen, when the user performs a touch operation on the display screen, the pressure sensor can sense pressure data, which includes touch position data and pressure value, and sends the pressure data to the central control platform 1 And processing unit 2, the central control platform 1 uses the touch position data to determine whether the touch operation is valid. If it is valid, it sends a touch valid instruction to the processing unit 2. After receiving the touch valid instruction, the processing unit 2 uses the pressure data to include The corresponding tactile feedback signal is obtained by the pressure value of, and the tactile feedback signal is sent to the corresponding tactile feedback unit 5, and the tactile feedback unit 5 executes the tactile feedback signal.

It should be noted that, in the embodiment of the present invention, the central control platform 1 does not directly send a signal or instruction to the motor drive unit 4, but first sends it to the processing unit 2, and the processing unit 2 sends it. And in practical applications, whether the sensing data of the on-board sensor 3 is sent to the processing unit 2 or the central control platform 1, or sent to the processing unit 2 and the central control platform 1 at the same time, it can be set according to specific needs. limited.

Wherein, the processing unit 2 may be a microcontroller unit (MCU), or a main processor of the central control platform 1, or other processing equipment that has corresponding resources and satisfies tactile feedback.

Further, please refer to FIG. 1 or FIG. 2. In an achievable manner, the processing unit 2 includes: an excitation control module 21 electrically connected to the on-board sensor 3, the central control platform 1, and the motor drive unit 4, and an excitation control module 21 that is electrically connected to the vehicle sensor 3, the central control platform 1, and the motor drive unit 4. The control module 21 is electrically connected to and stores an effect library module 22 that generates tactile feedback signals for a variety of different haptic effects; the excitation control module 21 is configured to obtain corresponding tactile feedback signals from the effect library module 22 based on the sensing data. In addition, the vehicle-mounted sensor 3, the central control platform 1, the motor drive unit 4, and the tactile feedback unit 5 may all be electrically connected to the excitation control module 21. Wherein, the effect library module 22 is connected to the excitation control module 21. The effect library module 22 stores tactile feedback signals of a variety of different haptic effects. Each tactile feedback signal can be set with a number, and the excitation control module 21 can pass The number gets the corresponding tactile feedback signal.

In the embodiment of the present invention, the tactile feedback unit 5 includes: a display screen, a touch panel, buttons, a car seat, and a steering wheel. Among them, the display screen, the touch panel and the buttons adopt a hardware excitation method, and the car seat and The steering wheel uses a responsive approach. Among them, the way of hardware excitation means that it needs to be triggered on the side of the tactile feedback unit 5 first. Specifically, the processing unit 2 pre-stores the correspondence between the tactile feedback unit 5 and each on-board sensor 3. When the tactile feedback unit 5 detects a trigger operation, it will generate an excitation signal, and at the same time, it has a correspondence with the tactile feedback unit 5. The vehicle-mounted sensor 3 of the relationship will detect the sensing data; the tactile feedback unit 5 will amplify the excitation signal through the motor drive unit 4, and send the amplified excitation signal to the processing unit 2. At the same time, the vehicle-mounted sensor 3 will at least send the sensing data For the processing unit 2, after receiving the sensing data and the excitation signal, the processing unit 2 can determine which group of the tactile feedback unit 5 and the on-board sensor 3 are based on the pre-stored correspondence between the tactile feedback unit 5 and each on-board sensor 3 , In order to distinguish effectively when there are multiple groups of triggers at the same time. It can be understood that the hardware excitation method is usually applied to devices that can interact with car users, such as touch screens, touch pads, buttons, and so on. Among them, the response mode refers to the haptic feedback without the excitation signal of the hardware excitation. For example, for a car seat, after the user sits on the car seat, the pressure sensor corresponding to the car seat can detect the change in pressure data and send it to the processing unit 2, which is processed by the processing unit 2 to realize the car seat Vibrate to achieve tactile feedback.

It should be noted that in FIG. 1 the excitation signal is sent by the motor drive unit 4 to the excitation control module 21, while in FIG. 2 the excitation signal is sent by the haptic feedback unit 5 to the excitation control module 21, because in FIG. 1 The motor drive unit 4 is located on the side of the haptic feedback unit 5. In this case, the motor drive unit 4 and the haptic feedback unit 5 need to be regarded as a whole, and the excitation signal obtained by the haptic feedback unit 5 needs to pass through the motor drive unit 4 first. In order to reach the excitation control module 21, the motor drive unit 4 in FIG. 2 is located on the side of the processing unit 2. At this time, it can be divided into two branches, one of which is the haptic feedback unit 5 sending an excitation signal to the excitation control module 21.

Further, in the embodiment of the present invention, there are multiple ways of connecting the processing unit 2 and the motor drive unit 4, and some of the ways that can be implemented are described below.

On the basis of the vehicle-mounted device shown in FIG. 1 and FIG. 2, as shown in FIG. 3, the processing unit 2 further includes a digital-to-analog conversion module 23 electrically connected to the excitation control module 21, and the vehicle-mounted device further includes a digital-to-analog conversion module 23. The DC blocking processing module 24 between the motor drive unit 4 and the motor drive unit 4.

Among them, the digital-to-analog conversion module 23 is used to convert a digital signal into an analog signal. The analog signal converted by the digital-to-analog conversion module 23 will be sent to the DC blocking processing module 24. The DC blocking processing module 24 performs DC blocking processing and then drives with the motor. The unit 4 is electrically connected to establish a transmission channel for tactile feedback signals.

In another implementation, as shown in FIG. 4, the processing unit 2 further includes a pulse width modulation module 25 electrically connected to the excitation control module 21, and the vehicle-mounted device further includes a pulse width modulation module 25 and the motor drive unit 4 Low frequency filter module 26.

Among them, by using the pulse width modulation module 25, a frequency of the same frequency as the designed waveform can be used, and the pulse width can be directly controlled by the amplitude of each point of the designed waveform to output a tactile feedback signal in the form of a pulse. In addition, the low-frequency filter module 26 is used to recover the tactile feedback signal in the form of a pulse, and a tactile feedback signal that can be effectively identified is obtained.

It is understandable that the aforementioned DC blocking processing module 24 and low frequency filtering module 26 can perform signal filtering or electrical processing according to the characteristics of the selected analog power amplifier to match the input requirements of the power amplifier. And optionally, the digital-to-analog conversion module 23 and the pulse width modulation module 25 have at least 8kHZ/8bit capabilities, and the motor drive unit 4 has a transient power of at least 8W/10ms.

In another implementation manner, as shown in FIG. 5, the processing unit 2 further includes a bidirectional two-wire synchronous serial bus (I2C) interface 27 provided on the excitation control module 21, and the motor drive unit 4 is electrically connected to the I2C interface 27 .

In another implementation manner, as shown in FIG. 6, the processing unit 2 further includes an integrated circuit audio bus (I2S) interface 28 provided on the excitation control module 21, and the motor drive unit 4 is electrically connected to the I2S interface 28.

In the embodiment of the present invention, constructing an in-vehicle device for implementing haptic feedback that can be applied to automobiles can effectively implement the use of automotive-grade components to solve the implementation problem of in-vehicle tactile feedback. The number of drive motor units can be set according to actual needs, which can solve the problem of synchronization of driving and effect of large therapeutic loads, and has strong versatility, covering tactile feedback such as display screens, touch panels, key car seats and steering wheels.

The above are only the embodiments of the present invention. It should be pointed out here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all belong to the present invention. The scope of protection.

Claims

A vehicle-mounted device, the vehicle-mounted device comprising a central control platform, characterized in that the vehicle-mounted device further comprises: a processing unit electrically connected to the central control platform, and electrically connected to the central control platform and the processing unit The vehicle-mounted sensor, a motor drive unit electrically connected to the processing unit, and a tactile feedback unit electrically connected to the processing unit and the motor drive unit;

The vehicle-mounted sensor is used to detect induction data and send the detected induction data to the central control platform and/or the processing unit;

The central control platform and/or the processing unit are configured to obtain a tactile feedback signal matching the sensing data based on the sensing data, and send the tactile feedback signal to the motor driving unit;

The motor drive unit is used to amplify the tactile feedback signal and send it to the tactile feedback unit;

The tactile feedback unit is used to execute the received tactile feedback signal to realize tactile feedback.
The vehicle-mounted device according to claim 1, wherein the number of the motor drive unit is at least two, the processing unit and the motor drive unit have a one-to-many correspondence relationship, and the motor drive unit and the motor drive unit have a one-to-many correspondence relationship. The tactile feedback unit has a one-to-one correspondence and is close to the tactile feedback unit.
The vehicle-mounted device according to claim 1, wherein the number of the motor drive unit is one, the processing unit and the motor drive unit have a one-to-one correspondence relationship, and the motor drive unit and the motor drive unit have a one-to-one correspondence relationship. The tactile feedback unit has a one-to-many correspondence, and the motor driving unit is close to the processing unit.
The vehicle-mounted device according to claim 1, wherein the processing unit comprises: an excitation control module electrically connected to the vehicle-mounted sensor, the central control platform, and the motor drive unit, and an excitation control module electrically connected to the excitation control The module is electrically connected to an effect library module that stores tactile feedback signals that generate a variety of different tactile effects;

The excitation control module is used to obtain corresponding tactile feedback signals from the effect library module based on the sensing data.
The vehicle-mounted device according to claim 4, wherein the processing unit further comprises a digital-to-analog conversion module electrically connected to the excitation control module, and the vehicle-mounted device further comprises a digital-to-analog conversion module located between the digital-to-analog conversion module and the DC blocking processing module between motor drive units.
The vehicle-mounted device according to claim 4, wherein the processing unit further comprises a pulse width modulation module electrically connected to the excitation control module, and the vehicle-mounted device further comprises a pulse width modulation module and a pulse width modulation module. The low-frequency filter module between the motor drive units.
The vehicle-mounted device according to claim 4, wherein the processing unit further comprises a bidirectional two-wire synchronous serial bus I2C interface provided on the excitation control module, and the motor drive unit is electrically connected to the I2C interface.
The vehicle-mounted device according to claim 4, wherein the processing unit further comprises an integrated circuit built-in audio bus I2S interface provided on the excitation control module, and the motor drive unit is electrically connected to the I2S interface.
The vehicle-mounted device according to any one of claims 1 to 8, wherein the tactile feedback unit comprises: a display screen, a touch panel, keys, a car seat, and a steering wheel, the display screen, touch panel, and The buttons are triggered by hardware excitation, and the car seat and the steering wheel are used to respond.
The vehicle-mounted device according to any one of claims 1 to 8, wherein the motor drive unit has a transient power of at least 8W/10ms.