阅读说明：本技术 汽车后视镜调节方法、系统及汽车 (Automobile rearview mirror adjusting method and system and automobile ) 是由 罗石 于 2020-04-24 设计创作，主要内容包括：本申请涉及汽车后视镜调节技术领域,提供了一种汽车后视镜调节方法、系统及汽车,该方法包括：获取方向盘的转动角度信号和转向轮的转动角度信号；根据转向轮的转动角度信号,确定转向轮的转动方向；根据转向轮的转动方向和方向盘的转动角度信号,确定与转向轮的转动方向同侧的目标后视镜的角度调节信息；控制后视镜调节器根据目标后视镜的角度调节信息对目标后视镜进行调节。本申请提供的汽车后视镜调节方法,利用方向盘的转动角度信号和转向轮的转动角度信号实现目标后视镜的自适应调节,以将目标后视镜实时地调节至预设位置,预设位置的后视镜能够将汽车转弯或者变道时的当前盲区范围的环境景物反射至驾驶位,从而提高了驾驶安全性。(The application relates to the technical field of automobile rearview mirror adjustment, and provides an automobile rearview mirror adjusting method, an automobile rearview mirror adjusting system and an automobile, wherein the method comprises the following steps: acquiring a rotation angle signal of a steering wheel and a rotation angle signal of a steering wheel; determining the rotation direction of the steering wheel according to the rotation angle signal of the steering wheel; determining angle adjusting information of the target rearview mirror on the same side as the rotating direction of the steering wheel according to the rotating direction of the steering wheel and the rotating angle signal of the steering wheel; and controlling the rearview mirror adjuster to adjust the target rearview mirror according to the angle adjusting information of the target rearview mirror. According to the automobile rearview mirror adjusting method, the self-adaptive adjustment of the target rearview mirror is achieved by utilizing the rotation angle signal of the steering wheel and the rotation angle signal of the steering wheel, so that the target rearview mirror is adjusted to the preset position in real time, the rearview mirror at the preset position can reflect the environmental scenery in the current blind area range to the driving position when the automobile turns or changes lanes, and therefore the driving safety is improved.)

1. An automobile rearview mirror adjusting method is characterized by comprising the following steps:

acquiring a rotation angle signal of a steering wheel and a rotation angle signal of a steering wheel;

determining the rotating direction of the steering wheel according to the rotating angle signal of the steering wheel;

determining angle adjusting information of a target rearview mirror on the same side as the rotating direction of the steering wheel according to the rotating direction of the steering wheel and the rotating angle signal of the steering wheel;

and controlling a rearview mirror adjuster to adjust the target rearview mirror according to the angle adjusting information of the target rearview mirror.

2. The method for adjusting the mirror of claim 1, wherein the determining the angle adjustment information of the target mirror on the same side as the rotation direction of the steering wheel according to the rotation direction of the steering wheel and the rotation angle signal of the steering wheel comprises:

if the absolute value of the steering wheel rotation angle corresponding to the rotation angle signal of the steering wheel is smaller than a preset rotation angle threshold, determining that the angle adjustment information of the target rearview mirror is zero;

and if the absolute value of the steering wheel rotation angle corresponding to the rotation angle signal of the steering wheel is greater than or equal to a preset rotation angle threshold value and less than or equal to a rotation angle limit value, determining the angle adjustment information of the target rearview mirror according to the corresponding relation between the rotation angle signal of the steering wheel and the angle adjustment information of the target rearview mirror.

3. The method for adjusting the mirror of claim 1, wherein the determining the angle adjustment information of the target mirror on the same side as the rotation direction of the steering wheel according to the rotation direction of the steering wheel and the rotation angle signal of the steering wheel comprises:

if the rotating direction of the steering wheel is leftward, determining the angle adjusting information of the target rearview mirror on the left side according to the corresponding relation between the rotating angle signal of the steering wheel and the angle adjusting information of the target rearview mirror on the left side;

and if the rotating direction of the steering wheel is rightward, determining the angle adjusting information of the right target rearview mirror according to the corresponding relation between the rotating angle signal of the steering wheel and the angle adjusting information of the right target rearview mirror.

4. The method for adjusting a mirror for a vehicle according to claim 2, wherein the process for determining the correspondence between the rotation angle signal of the steering wheel and the angle adjustment information of the target mirror includes:

setting a rotation angle range of the steering wheel;

selecting a plurality of preset rotation angle signals at intervals within the rotation angle range;

determining preset adjusting angle information of the target rearview mirror corresponding to the preset rotation angle signals;

fitting each preset adjusting angle information to obtain a change coefficient between a rotation angle signal of the steering wheel and the angle adjusting information of the target rearview mirror;

and obtaining the corresponding relation between the rotation angle signal of the steering wheel and the angle adjusting information of the target rearview mirror according to the change coefficient.

5. The vehicle mirror adjusting method according to claim 4, wherein the correspondence relationship between the rotation angle signal of the steering wheel and the angle adjustment information of the target mirror is:

and if the absolute value of the steering wheel rotation angle corresponding to the steering wheel rotation angle signal is greater than or equal to a preset rotation angle threshold value and less than or equal to a preset rotation angle threshold value, determining the adjustment angle of the target rearview mirror according to the steering wheel rotation angle, the change coefficient between the steering wheel rotation angle and the angle adjustment information of the target rearview mirror and the preset rotation angle threshold value.

6. The method for adjusting the mirror assembly according to claim 1, wherein the controlling mirror adjuster adjusts the target mirror according to the angle adjustment information of the target mirror, comprising:

and controlling the rearview mirror adjuster to adjust the target rearview mirror on the same side as the rotation direction of the steering wheel to a preset position, wherein the preset position corresponds to the angle adjusting information of the target rearview mirror.

7. An automobile rearview mirror adjustment system, comprising:

the steering wheel corner sensor is in communication connection with the rearview mirror adjusting controller and is used for detecting and sending a rotation angle signal of the steering wheel;

the steering wheel steering angle sensor is in communication connection with the rearview mirror adjusting controller and is used for detecting and sending a steering angle signal of a steering wheel;

the rearview mirror adjusting controller is used for receiving a rotation angle signal of a steering wheel and a rotation angle signal of a steering wheel; determining the rotating direction of the steering wheel according to the rotating angle signal of the steering wheel; determining angle adjusting information of a target rearview mirror on the same side as the rotating direction of the steering wheel according to the rotating direction of the steering wheel and the rotating angle signal of the steering wheel;

and the rearview mirror adjuster is in communication connection with the rearview mirror adjustment controller and is used for adjusting the target rearview mirror according to the angle adjustment information of the target rearview mirror.

8. The vehicle rearview mirror adjustment system of claim 7, further comprising: a signal transmitter;

the steering wheel angle sensor and the steering wheel angle sensor are in communication connection with the signal transmitter, and the signal transmitter is in wireless communication connection with the rearview mirror adjusting controller;

the signal transmitter is used for receiving a rotation angle signal of the steering wheel and a rotation angle signal of the steering wheel; and processing the rotation angle signal of the steering wheel and sending the signals in a time-sharing manner.

9. The vehicle rearview mirror adjustment system of claim 8, wherein said rearview mirror adjuster comprises: the rearview mirror comprises a motor driving module and a rearview mirror adjusting mechanism;

the motor driving module is in communication connection with the rearview mirror adjusting and processing module, and the rearview mirror adjusting mechanism is in communication connection with the motor driving module;

the motor driving module is used for sending an adjusting instruction according to the angle adjusting information of the target rearview mirror;

and the rearview mirror adjusting mechanism is used for adjusting the target rearview mirror to a preset position according to the adjusting instruction.

10. An automobile, characterized in that it comprises an automobile rearview mirror adjustment system as claimed in any one of claims 7 to 9.

Technical Field

The application relates to the technical field of automobile rearview mirror adjustment, in particular to an automobile rearview mirror adjusting method and system and an automobile.

Background

Because the automobile has more vision blind areas, in order to enable a driver to operate more conveniently in the driving process, prevent safety accidents caused by insufficient vision during driving and ensure personal safety, a rearview mirror must be installed on the automobile to develop the vision. And all rearview mirrors also have to be adjustable in direction so that a driver can directly obtain the vision conditions of the rear, the side and the lower part of the automobile from a driver seat. At present, the reduction of the blind area of the vision of the rearview mirror is an important measure for improving the driving safety of a driver.

At present, the adjustment of the automobile rearview mirror has two different operation modes of manual adjustment and automatic adjustment. For the manual adjustment mode, the angle change of the lens is mainly controlled from different angles by using a rocker arm on an A column in the vehicle through three steel wires. Although the manual adjustment mode has the advantages of simple rearview mirror design, low cost and the like, the rearview mirror of the automobile needs to be adjusted before driving, and the rearview mirror can not be adjusted in the driving process. For the electric adjusting mode, the electric mode mainly comprises that two groups of direct current motors with different rotating directions are arranged in the lens to control the lens to change the angle up and down and left and right. The control switch arranged on the main cab door of the cab realizes positive and negative rotation by changing the electrifying directions of the two groups of motors, thereby changing the positions of the lenses. Although the electric adjusting mode reduces the adjusting difficulty of the automobile rearview mirror on the basis of the manual adjusting mode, the manual adjusting step is only completed by the electric switch.

Therefore, both manual and electrical adjustment require the position of the mirror to be adjusted well in front of the vehicle and no further adjustment is possible during driving. In addition, under the conditions of automobile turning, climbing, lane changing and the like, the visual fields of relevant positions such as the rear part and the side part of the automobile cannot be accurately acquired in real time, so that the visual field blind area of an automobile driver is increased, and the safety factor in the driving process is reduced.

Disclosure of Invention

The application provides an automobile rearview mirror adjusting method, an automobile rearview mirror adjusting system and an automobile aiming at the defects of the existing mode, and aims to solve the technical problem that the automobile rearview mirror cannot be adjusted in real time in the prior art.

In a first aspect, an embodiment of the present application provides an automobile rearview mirror adjustment method, including:

acquiring a rotation angle signal of a steering wheel and a rotation angle signal of a steering wheel;

determining the rotating direction of the steering wheel according to the rotating angle signal of the steering wheel;

determining angle adjusting information of a target rearview mirror on the same side as the rotating direction of the steering wheel according to the rotating direction of the steering wheel and the rotating angle signal of the steering wheel;

and controlling a rearview mirror adjuster to adjust the target rearview mirror according to the angle adjusting information of the target rearview mirror.

Optionally, the determining, according to the rotation direction of the steering wheel and the rotation angle signal of the steering wheel, angle adjustment information of the target rearview mirror on the same side as the rotation direction of the steering wheel includes:

if the absolute value of the steering wheel rotation angle corresponding to the rotation angle signal of the steering wheel is smaller than a preset rotation angle threshold, determining that the angle adjustment information of the target rearview mirror is zero;

and if the absolute value of the steering wheel rotation angle corresponding to the rotation angle signal of the steering wheel is greater than or equal to a preset rotation angle threshold value and less than or equal to a rotation angle limit value, determining the angle adjustment information of the target rearview mirror according to the corresponding relation between the rotation angle signal of the steering wheel and the angle adjustment information of the target rearview mirror.

Optionally, the determining, according to the rotation direction of the steering wheel and the rotation angle signal of the steering wheel, angle adjustment information of the target rearview mirror on the same side as the rotation direction of the steering wheel includes:

if the rotating direction of the steering wheel is leftward, determining the angle adjusting information of the target rearview mirror on the left side according to the corresponding relation between the rotating angle signal of the steering wheel and the angle adjusting information of the target rearview mirror on the left side;

and if the rotating direction of the steering wheel is rightward, determining the angle adjusting information of the right target rearview mirror according to the corresponding relation between the rotating angle signal of the steering wheel and the angle adjusting information of the right target rearview mirror.

Optionally, the determining of the corresponding relationship between the rotation angle signal of the steering wheel and the angle adjustment information of the target rearview mirror includes:

setting a rotation angle range of the steering wheel;

selecting a plurality of preset rotation angle signals at intervals within the rotation angle range;

determining preset adjusting angle information of the target rearview mirror corresponding to the preset rotation angle signals;

fitting each preset adjusting angle information to obtain a change coefficient between a rotation angle signal of the steering wheel and the angle adjusting information of the target rearview mirror;

and obtaining the corresponding relation between the rotation angle signal of the steering wheel and the angle adjusting information of the target rearview mirror according to the change coefficient.

Optionally, a correspondence between the rotation angle signal of the steering wheel and the angle adjustment information of the target rearview mirror is:

and if the absolute value of the steering wheel rotation angle corresponding to the steering wheel rotation angle signal is greater than or equal to a preset rotation angle threshold value and less than or equal to a preset rotation angle threshold value, determining the adjustment angle of the target rearview mirror according to the steering wheel rotation angle, the change coefficient between the steering wheel rotation angle and the angle adjustment information of the target rearview mirror and the preset rotation angle threshold value.

Optionally, the controlling rearview mirror adjuster adjusts the target rearview mirror according to the angle adjustment information of the target rearview mirror, including:

and controlling the rearview mirror adjuster to adjust the target rearview mirror on the same side as the rotation direction of the steering wheel to a preset position, wherein the preset position corresponds to the angle adjusting information of the target rearview mirror.

In a second aspect, an embodiment of the present application further provides an automobile rearview mirror adjustment system, including:

the steering wheel corner sensor is in communication connection with the rearview mirror adjusting controller and is used for detecting and sending a rotation angle signal of the steering wheel;

the steering wheel steering angle sensor is in communication connection with the rearview mirror adjusting controller and is used for detecting and sending a steering angle signal of a steering wheel;

the rearview mirror adjusting controller is used for receiving a rotation angle signal of a steering wheel and a rotation angle signal of a steering wheel; determining the rotating direction of the steering wheel according to the rotating angle signal of the steering wheel; determining angle adjusting information of a target rearview mirror on the same side as the rotating direction of the steering wheel according to the rotating direction of the steering wheel and the rotating angle signal of the steering wheel;

and the rearview mirror adjuster is in communication connection with the rearview mirror adjustment controller and is used for adjusting the target rearview mirror according to the angle adjustment information of the target rearview mirror.

Optionally, the vehicle mirror adjustment system further comprises: a signal transmitter; the rear view mirror adjustment controller includes: the device comprises a steering angle control module and a rearview mirror adjusting and processing module;

the steering wheel angle sensor and the steering wheel angle sensor are in electrical communication connection with the signal steering angle control module collector, the signal transmitter steering angle control module is in wireless communication connection with the rearview mirror adjusting controller, and the rearview mirror adjuster is electrically connected with the rearview mirror adjusting processing module;

the signal transmitter steering angle control module is used for receiving a rotation angle signal of the steering wheel and a rotation angle signal of the steering wheel; processing the rotation angle signal of the steering wheel and sending the signals in a time-sharing manner;

the rearview mirror adjusting and processing module is used for receiving a rotation angle signal of the steering wheel and a rotation angle signal of the steering wheel; determining the rotating direction of the steering wheel according to the rotating angle signal of the steering wheel; and determining the angle adjusting information of the target rearview mirror on the same side as the rotating direction of the steering wheel according to the rotating direction of the steering wheel and the rotating angle signal of the steering wheel.

Optionally, the rearview mirror adjuster comprises: the rearview mirror comprises a motor driving module and a rearview mirror adjusting mechanism; the motor driving module is in electrical communication connection with the rearview mirror adjusting processing module, and the rearview mirror adjusting mechanism is in electrical communication connection with the motor driving module;

the motor driving module is used for sending an adjusting instruction according to the angle adjusting information of the target rearview mirror;

and the rearview mirror adjusting mechanism is used for adjusting the target rearview mirror to a preset blind area observation position according to the adjusting instruction.

In a third aspect, the embodiment of the present application further provides an automobile, including the automobile rearview mirror adjusting system in the second aspect.

The application has the beneficial technical effects that:

according to the automobile rearview mirror adjusting method or system, self-adaptive adjustment of the target rearview mirror is achieved through the rotation angle signal of the steering wheel and the rotation angle signal of the steering wheel, so that the target rearview mirror is adjusted to the preset position in real time, the rearview mirror at the preset position can reflect the environmental scenery in the current blind area range to the driving position when the automobile turns or changes lanes, and driving safety is improved.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic connection diagram of an automotive rearview mirror adjustment system according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of another embodiment of an automotive rearview mirror adjustment system according to the present disclosure;

FIG. 3 is a schematic connection diagram of another vehicle mirror adjustment system according to an embodiment of the present application;

FIG. 4 is a flowchart of a method for adjusting a rearview mirror of an automobile according to an embodiment of the present disclosure;

fig. 5 is a flowchart illustrating an example of an adjusting method for a rearview mirror of an automobile according to an embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of illustrating the invention and are not to be construed as limiting the application.

As shown in fig. 1, an embodiment of the present application provides an automobile rearview mirror adjustment system, including: a steering wheel angle sensor 100, a steering wheel angle sensor 200, a mirror adjustment controller 300, and a mirror adjuster 400.

Wherein, the steering wheel angle sensor 100 and the steering wheel angle sensor 200 are used as the transmitting terminals of the automobile rearview mirror adjusting system and are respectively connected with the rearview mirror adjusting controller 300 in a communication way. The steering wheel angle sensor 100 is installed in a steering column under a steering wheel, and is configured to detect and send a rotation angle signal of the steering wheel, that is, to convert a rotation angle change of the steering wheel into a change output of an electric quantity signal. The steering wheel angle sensor 200 is mounted on a steering mechanism of an automobile, and is configured to detect and transmit a turning angle signal of a steering wheel, that is, to convert a change in the steering angle of the steering wheel into a change output of an electric quantity signal.

The rearview mirror adjustment controller 300 is used as a receiving end of the automobile rearview mirror adjustment system, and is configured to process the received signals of the steering wheel angle sensor 100 and the steering wheel angle sensor 200, and specifically execute the following processes: receiving a rotation angle signal of a steering wheel and a rotation angle signal of a steering wheel; determining the rotation direction of the steering wheel according to the rotation angle signal of the steering wheel; and determining the angle adjusting information of the target rearview mirror on the same side with the rotating direction of the steering wheel according to the rotating direction of the steering wheel and the rotating angle signal of the steering wheel.

The rearview mirror adjuster 400 is used as an executing component of the automobile rearview mirror adjusting system, is in communication connection with the rearview mirror adjusting controller 300, and is used for adjusting the target rearview mirror according to the angle adjusting information of the target rearview mirror, so that the target rearview mirror is adjusted to a preset position.

The automobile rearview mirror adjusting system that this application embodiment provided adjusts the target rearview mirror to predetermineeing the position according to the turned angle signal of steering wheel and the turned angle signal of directive wheel in real time, and the rear-view mirror of predetermineeing the position can reflect the environment scenery of the current blind area scope to driving position when the car turns or changes the lane to driving safety has been improved.

In some embodiments, when the driver turns the steering wheel, the steering wheel angle sensor 100 and the steering wheel angle sensor 200 output an analog voltage signal through detection of an angle measurement chip inside the sensor, the voltage signal has a linear relationship with the turning angle, the voltage signal is converted into a digital signal by an a/D (analog to digital conversion) module inside the sensor, and the digital signal is processed by an internal DSP (digital signal processor) chip to output a turning angle signal of the steering wheel and a turning angle signal of the steering wheel.

In some embodiments, a commonly used steering wheel angle sensor 100 employs a three-gear mechanical structure to measure the angle of rotation and the number of turns made. The gear wheel rotates along with the steering column of the steering wheel, the number of teeth of the two pinion gears is different by one, and the two pinion gears and the sensor shell are fixed on the vehicle body together and do not rotate along with the steering wheel. The two pinions respectively acquire the rotating angles along with the steering wheel, and because the difference is one tooth number, different turns can differ by a specific angle, and the absolute rotation angle of the steering wheel is obtained through calculation.

In some embodiments, the main purpose of the steering wheel angle sensor 200 is to determine the left and right turns of the wheels, and also to perform mutual verification and correction with the steering wheel angle sensor 100, since the turning angle of the steering wheel and the turning angle of the steering wheel have a proportional relationship (typically 8 to 1). When the data collected by the steering wheel angle sensor 100 and the steering wheel angle sensor 200 are in a fluctuation range corresponding to each other, the two sensors work normally; if the data of the two sensors have larger errors, the data of one sensor has problems, and the sensor can be overhauled or replaced.

On the basis of the above-mentioned embodiments, as shown in fig. 2, the present embodiment provides another vehicle rearview mirror adjusting system, which further includes a signal transmitter 500 in addition to the steering wheel angle sensor 100, the steering wheel angle sensor 200, the rearview mirror adjusting controller 300 and the rearview mirror adjuster 400 in the above-mentioned embodiments.

The steering wheel angle sensor 100 and the steering wheel angle sensor 200 are each connected in communication with a signal transmitter 500.

Alternatively, the steering wheel angle sensor 100 and the steered wheel angle sensor 200 are communicatively connected to the signal transmitter 500 via a CAN (Controller Area Network) bus. The signal transmitter 500 and the rearview mirror adjusting controller 300 are in wireless communication connection through a wireless data transceiver module, so that data transmission is facilitated.

The signal transmitter 500 may be disposed on the steering mechanism for receiving the turning angle signal of the steering wheel transmitted from the steering wheel angle sensor 100 and the turning angle signal of the steered wheels transmitted from the steered wheel angle sensor 200. Then, the turning angle signal of the steering wheel and the turning angle signal of the steering wheel are processed and sent in a time-sharing manner, so that the rearview mirror adjusting controller 300 can receive signals with different priorities, thereby recognizing different sensor signals and facilitating subsequent data processing.

Alternatively, the processing of the steering angle signal of the steering wheel and the steering angle signal of the steering wheel by the signal transmitter 500 mainly includes converting and transmitting data, and specifically, a timer interrupt of a Programmable Interrupt Controller (PIC) may be used to set a time slice, such as: after 10ms (milliseconds), the operation function is entered, and the operation is performed according to the priority level, so that the signals of the steering wheel angle sensor 100 and the steering wheel angle sensor 200 can be distinguished and sent to the mirror adjustment controller 300.

In this embodiment, the automobile rearview mirror adjusting system based on wireless communication realizes the acquisition and real-time wireless transmission of the corner signal of the steering wheel and the corner signal of the steering wheel, and obtains the best view when the automobile turns or changes lanes in the driving process through the self-adaptive adjustment of the automobile rearview mirror after wireless reception.

On the basis of the above embodiments, considering that the load of the motor for adjusting the rearview mirror is large, the output voltage and current of the rearview mirror adjusting controller 300 (such as a singlechip) are small and are not enough to directly drive the motor. Therefore, as shown in fig. 3, the rear view mirror adjuster 400 in the present embodiment includes: a motor drive module 410 and a mirror adjustment mechanism 420.

The motor driving module 410 is in communication connection with the rearview mirror adjusting module, and the rearview mirror adjusting mechanism 420 is in communication connection with the motor driving module 410. The motor driving module 410 is configured to send an adjustment instruction according to the angle adjustment information of the target rearview mirror. The mirror adjustment mechanism 420 (e.g., a motor) is used to adjust the target mirror to a preset position according to the adjustment command.

In some embodiments, the adjusting mechanism of each rearview mirror is provided with two small motors which are respectively used for controlling the angle of the rearview mirror, and the forward transmission, the reverse rotation and the stop of the motors are controlled by changing the high and low levels of the input motor, so that the purpose of adjusting the angle of the rearview mirror is achieved.

Based on the same inventive concept, as shown in fig. 4, an embodiment of the present application provides an automobile rearview mirror adjusting method, including the following steps S101 to S104:

s101, a rotation angle signal of a steering wheel and a rotation angle signal of a steering wheel are obtained.

And S102, determining the rotating direction of the steering wheel according to the rotating angle signal of the steering wheel.

Specifically, the turning angle signal of the steering wheel can determine whether the wheel turns left or right.

S103, determining angle adjusting information of the target rearview mirror on the same side with the rotating direction of the steering wheel according to the rotating direction of the steering wheel and the rotating angle signal of the steering wheel.

Specifically, the turning direction of the steering wheel is mainly used to determine the adjustment target, i.e., which side of the mirror is adjusted. According to the driving characteristics of the automobile, when the automobile turns to the left side, the blind area of the left side rearview mirror is large; when turning to the right side, the blind area of right side rear-view mirror is great.

And S104, controlling the rearview mirror adjuster 400 to adjust the target rearview mirror according to the angle adjusting information of the target rearview mirror.

According to the automobile rearview mirror adjusting method provided by the embodiment, the self-adaptive adjustment of the target rearview mirror is realized by utilizing the rotation angle signal of the steering wheel and the rotation angle signal of the steering wheel so as to adjust the target rearview mirror to the preset position in real time, and the rearview mirror at the preset position can reflect the environmental scenery in the current blind area range to the driving position when the automobile turns or changes lanes, so that the driving safety is improved.

On the basis of the above embodiment, in step S103, the determination of the angle adjustment information of the target rearview mirror specifically includes two cases:

in the first case: and if the absolute value of the steering wheel rotation angle corresponding to the rotation angle signal of the steering wheel is smaller than the preset rotation angle threshold, determining that the angle adjusting information of the target rearview mirror is zero.

Specifically, in the case where the rotation of the steering wheel is detected, if the rotation angle of the steering wheel is smaller than the preset rotation angle threshold, the range of change in the field of view of the cab, that is, the position state of the rearview mirror, is kept substantially unchanged.

Optionally, when the preset rotation angle threshold is 30 °, that is, the absolute value of the rotation angle of the steering wheel is less than 30 °, the rearview mirror is not adjusted.

In the second case: and if the absolute value of the steering wheel rotating angle corresponding to the rotating angle signal of the steering wheel is greater than or equal to a preset rotating angle threshold value and less than or equal to a rotating angle limit value, determining the angle adjusting information of the target rearview mirror according to the corresponding relation between the rotating angle signal of the steering wheel and the angle adjusting information of the target rearview mirror.

Specifically, if the absolute value of the rotation angle of the steering wheel is greater than or equal to 30 ° and is maintained for a period of time, the rearview mirror needs to be adjusted to a preset position, and the blind area of the field of view is reduced. The larger the rotation angle of the steering wheel is, the larger the angle adjustment range of the rearview mirror is, so that the automatic adjustment of the rearview mirror can be realized, and the rearview mirror can be adjusted in the driving process.

In some embodiments, when the steering wheel is turned, the receiving end receives a continuous electrical signal output by the steering wheel angle sensor 100, and the duration of the electrical signal is the time when the steering wheel angle sensor 100 continuously outputs the signal. The specific time can be determined by the time when the driver finishes driving and turning through ergonomic research and analysis, and the time is generally more than 1s to determine that the driver is in a turning state.

In addition to the above embodiments, in step S103, determining the angle adjustment information of the target rearview mirror on the same side as the rotation direction of the steering wheel according to the rotation direction of the steering wheel and the rotation angle signal of the steering wheel includes:

and if the rotating direction of the steering wheel is leftward, determining the angle adjusting information of the target rearview mirror on the left side according to the corresponding relation between the rotating angle signal of the steering wheel and the angle adjusting information of the target rearview mirror on the left side.

And if the rotating direction of the steering wheel is rightward, determining the angle adjusting information of the right target rearview mirror according to the corresponding relation between the rotating angle signal of the steering wheel and the angle adjusting information of the right target rearview mirror.

On the basis of the above embodiments, the process of determining the correspondence between the rotation angle signal of the steering wheel and the angle adjustment information of the target mirror includes the following steps:

first, the range of the rotation angle of the steering wheel is set.

Alternatively, the rotation angle range of the steering wheel is selected according to the mechanical structural characteristics of the steering wheel, and the rotation angle range of the steering wheel in the embodiment is-450 ° to 450 ° (including-450 ° and 450 ° as end points).

And secondly, selecting a plurality of preset rotation angle signals at intervals within the rotation angle range.

Alternatively, in order to accurately determine the correspondence between the rotation angle signal of the steering wheel and the angle adjustment information of the target rearview mirror, several preset rotation angle signals may be selected at intervals within the rotation angle range.

And thirdly, determining preset adjusting angle information of the target rearview mirror corresponding to the plurality of preset rotating angle signals.

Alternatively, the adjustment angle of the rear view mirror may be adjusted by corresponding preset-degree adjustment information (i.e., the optimum adjustment angle of the rear view mirror) in the case where the rotation angle of the steering wheel is-450 °, -360 °, -180 °, -90 °, 0 °, 90 °, 180 °, 360 °, 450 °.

And fourthly, fitting the preset adjusting angle information to obtain a change coefficient between the rotation angle signal of the steering wheel and the angle adjusting information of the target rearview mirror.

Optionally, the data is fitted to obtain the rotation angle of the rearview mirror corresponding to each selected angle between-450 ° and-450 °, and the change coefficient δ between the rotation angle of the steering wheel and the adjustment angle of the rearview mirror is calculated.

And fifthly, obtaining the corresponding relation between the rotation angle signal of the steering wheel and the angle adjusting information of the target rearview mirror according to the change coefficient between the rotation angle signal of the steering wheel and the angle adjusting information of the target rearview mirror.

On the basis of the above embodiment, the corresponding relationship between the rotation angle signal of the steering wheel and the angle adjustment information of the target rearview mirror is as follows:

and if the absolute value of the steering wheel rotation angle corresponding to the steering wheel rotation angle signal is greater than or equal to a preset rotation angle threshold value and less than or equal to a preset rotation angle threshold value, determining the adjustment angle of the target rearview mirror according to the rotation angle of the steering wheel, the change coefficient between the rotation angle of the steering wheel and the angle adjustment information of the target rearview mirror and the preset rotation angle threshold value.

Specifically, when the preset turning angle threshold is 30 ° and the turning angle limit value is 450 °, the corresponding relationship formula between the turning angle of the steering wheel and the adjustment angle of the target rearview mirror is:

where a is a steering wheel rotation angle corresponding to the rotation angle signal of the steering wheel, δ is a change coefficient between the rotation angle signal of the steering wheel and the angle adjustment information of the target mirror, and Γ is an adjustment angle of the target mirror.

It should be noted that the adjustment angles corresponding to the left and right rearview mirrors of the automobile can be adjusted according to the above formula, and specifically, the adjustment of the left rearview mirror or the right rearview mirror can be determined according to the rotation direction of the steering wheel.

In this embodiment, the rearview mirror is adjusted according to the corresponding relationship between the rotation angle of the steering wheel and the adjustment angle of the target rearview mirror, so that the self-adaptive adjustment precision of the rearview mirror can be improved, and the driving safety is further improved.

On the basis of the above embodiments, in step S104, controlling the rearview mirror adjuster 400 to adjust the target rearview mirror according to the angle adjustment information of the target rearview mirror includes:

and controlling a rearview mirror adjuster to adjust the target rearview mirror on the same side as the rotating direction of the steering wheel to a preset position, wherein the preset position corresponds to the angle adjusting information of the target rearview mirror.

The target rearview mirror at the preset position can reflect the environmental scenery in the range of the current blind area to the driving position.

It should be noted that the preset position of the target rearview mirror is matched with the angle adjustment information of the target rearview mirror. For example, the rearview mirror adjustment angle included in the angle adjustment information of the target rearview mirror is 20 °, and then the target rearview mirror can reach the preset position after being adjusted by 20 ° in the current position state, and the preset position can meet the current viewing field requirement of the driver.

The following describes the entire process of the adjusting method of the automobile rearview mirror in the embodiment of the present application with reference to fig. 5:

firstly, the receiving end receives the rotation angle data of the steering wheel, whether the receiving end receives the rotation angle data is judged, and if the receiving end does not receive the rotation angle data, the receiving end continues to receive the rotation angle data. If the rotation angle data of the steering wheel is received, whether the steering wheel of the automobile rotates or not is judged, and the rotation of the steering wheel is divided into a left-turning direction and a right-turning direction.

Taking the left turn example of the automobile, when the rotation of the steering wheel is detected, if the rotation angle of the steering wheel is less than 30 degrees, the visual field change range of the cab is basically kept unchanged, and the state of the rearview mirror is kept unchanged.

If the rotation angle of the steering wheel exceeds 30 degrees, the left rearview mirror needs to be adjusted according to a corresponding relation formula between the adjustment angle of the left target rearview mirror and the rotation angle of the steering wheel, and the specific corresponding relation formula is as follows:

Γ₁＝((|A|-30°)/10)*₁；

wherein, gamma is₁The left side is the adjusting angle of the target rearview mirror on the left side; delta₁The left side indicates a coefficient of change between the turning angle signal of the steering wheel and the angle adjustment information of the target rearview mirror on the left side.

The mirror adjustment controller 300 outputs corresponding angle adjustment information according to the above formula, and controls the motor in the mirror adjuster 400 to adjust the left mirror, so that the left mirror is adjusted to the optimal position, thereby reducing the blind zone of the view.

Similarly, when the automobile turns right, in the case where the turning of the steering wheel is detected, if the turning angle of the steering wheel is less than 30 °, the range of change of the visual field of the driver's cab remains substantially unchanged, and the state of the rearview mirror remains unchanged.

If the rotation angle of the steering wheel exceeds 30 degrees, the right rearview mirror needs to be adjusted according to a corresponding relation formula between the adjustment angle of the right target rearview mirror and the rotation angle of the steering wheel, and the specific corresponding relation formula is as follows:

Γ₂＝((|A|-30°)/10)*₂；

wherein, gamma is₂The right side is the adjusting angle of the target rearview mirror on the right side; delta₂Indicating the coefficient of change between the steering wheel angle signal and the angle adjustment information of the right target mirror.

The rearview mirror adjustment controller 300 outputs corresponding angle adjustment information according to the above corresponding relation formula, and controls the motor in the rearview mirror adjuster 400 to adjust the rearview mirror on the right side, so that the rearview mirror on the right side is adjusted to the optimal position, thereby reducing the blind area of the visual field.

Based on the same inventive concept, the embodiment of the application further provides an automobile, and the automobile comprises the automobile rearview mirror adjusting system in the previous embodiments.

In this embodiment, because this car has possessed and to have can be according to the turned angle signal of steering wheel and the turned angle signal self-adaptation ground with the adjustment target rear-view mirror to presetting the position, the rear-view mirror of presetting the position can reflect the environmental scenery of the current blind area scope when car turns or changes lanes to the driving position to driving safety has been improved.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

It will be understood by those within the art that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. Those skilled in the art will appreciate that the computer program instructions may be implemented by a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, implement the aspects specified in the block or blocks of the block diagrams and/or flowchart illustrations disclosed herein.

Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.