阅读说明：本技术 一种电动车、摩托车的后视镜智能调节方法和装置 (Intelligent adjusting method and device for rearview mirrors of electric vehicles and motorcycles ) 是由 林明辉 徐彬 张慧敏 陈应易 吴劭锴 章文睿 于 2021-03-09 设计创作，主要内容包括：本发明公开了一种电动车、摩托车的后视镜智能调节方法和装置,方法包括：S1：接收角度传感器实时采集的电动车/摩托车龙头转动方向和角度数据；同时,接收红外传感器实时采集的骑行人员头部以及躯干到龙头旋转中心的距离数据；S2：将转动方向、角度数据以及距离数据输入到预先训练的身高-角度智能算法模型中,并输出后视镜所需的调节角度数据；S3：根据输出的后视镜所需调节角度数据,控制后视镜所在驱动机构运动,带动后视镜偏转/旋转至所需调节角度。本申请技术方案辅助骑行人员在骑行转向时,控制后视镜回转,保证骑行人员转动龙头过程中不影响其观察后视镜。(The invention discloses an intelligent adjusting method and device for rearview mirrors of electric vehicles and motorcycles, wherein the method comprises the following steps: s1: receiving the rotation direction and angle data of the electric vehicle/motorcycle steering head collected by the angle sensor in real time; meanwhile, receiving distance data from the head and the trunk of the riding person to the faucet rotation center, which are acquired by the infrared sensor in real time; s2: inputting the rotating direction, the angle data and the distance data into a pre-trained height-angle intelligent algorithm model, and outputting angle adjusting data required by the rearview mirror; s3: and controlling the driving mechanism where the rearview mirror is located to move according to the output data of the required adjusting angle of the rearview mirror, and driving the rearview mirror to deflect/rotate to the required adjusting angle. This application technical scheme assists the personnel of riding when riding and turn to, and the gyration of control rear-view mirror guarantees that the personnel of riding rotates leading in-process and does not influence its observation rear-view mirror.)

1. An intelligent adjusting method for rearview mirrors of electric vehicles and motorcycles is characterized by comprising the following steps:

s1: receiving the rotation direction and angle data of the electric vehicle/motorcycle steering head collected by the angle sensor in real time; meanwhile, receiving distance data from the head and the trunk of the riding person to the faucet rotation center, which are acquired by the infrared sensor in real time;

s2: inputting the rotating direction, the angle data and the distance data into a pre-trained height-angle intelligent algorithm model, and outputting angle adjusting data required by the rearview mirror;

s3: and controlling a driving mechanism where the rearview mirror is located to move according to the output data of the required adjusting angle of the rearview mirror, and driving the rearview mirror to deflect/rotate to the required adjusting angle.

2. The intelligent adjusting method for rearview mirrors of electric vehicles and motorcycles as claimed in claim 1, wherein said height-angle intelligent algorithm model in step S2 adopts a deep learning neural network training model, comprising:

an input layer for inputting a head-to-center-of-rotation distance value X1, a torso-to-center-of-rotation distance value X2, and a fixed parameter C;

the output layer is used for outputting a rearview mirror deflection angle Y1 and a rearview mirror rotation angle Y2;

and the hidden layer is used for calculating the weight value and the correlation of each neuron according to a back propagation algorithm.

3. The intelligent adjusting method for rearview mirrors of electric vehicles and motorcycles as claimed in claim 2, wherein in said height-angle intelligent algorithm model, the relationship between the faucet rotation angle data and the deflection or rotation of the rearview mirror is as follows:

wherein beta is the rotation angle of the faucet, alpha is the included angle between the rearview mirror and the faucet, a is the distance from the head to the rotation center, and b is the distance from the rearview mirror to the rotation center of the faucet.

4. The intelligent adjusting method for rearview mirrors of electric vehicles and motorcycles as claimed in claim 1, wherein said angle sensor is a hall sensor; the electric vehicle/motorcycle faucet rotating shaft is characterized in that a plurality of magnets matched with the Hall sensors are fixedly arranged on the same side of the electric vehicle/motorcycle faucet rotating shaft, the magnets are located on the same circumference, and the magnet interval angles are the same.

5. The intelligent adjusting method for rearview mirrors of electric vehicles and motorcycles as claimed in claim 4, wherein said angle sensor comprises 2 said Hall sensors, said faucet shaft comprises 6 said magnets, and said magnets are spaced at an angle of 20 °; each Hall sensor respectively senses 3 adjacent magnets so as to acquire clockwise/anticlockwise rotation directions and angles of electric vehicle and motorcycle faucets according to sensing signals sent by any Hall sensor.

6. An intelligent adjusting device for rearview mirrors of electric vehicles and motorcycles, which adopts the adjusting method for rearview mirrors of electric vehicles and motorcycles as claimed in any one of claims 1 to 5, and is characterized by comprising the following steps: the device comprises a control device, an infrared sensor, an angle sensor and a driving mechanism, wherein the angle sensor, the driving mechanism and the infrared sensor are respectively and electrically connected with the control device; the infrared sensor is arranged on an instrument panel of the electric vehicle/motorcycle, and the driving mechanism is arranged on a faucet of the electric vehicle/motorcycle and is used for movably mounting a rearview mirror;

the control device takes an STM32F4 single chip microcomputer as an inner core, receives distance data from the head and the trunk of a riding person to a faucet rotation center collected by the infrared sensor, receives the rotation direction and angle data collected by the angle sensor, inputs the rotation direction, angle data and distance data into a pre-trained height-angle intelligent algorithm model, outputs a required adjusting angle of the rearview mirror, controls the driving mechanism where the rearview mirror is located to move, and drives the rearview mirror to deflect/rotate to the required adjusting angle.

7. The intelligent adjusting device for rearview mirrors of electric vehicles and motorcycles as claimed in claim 6, further comprising a button, wherein the button is arranged near a handle of the faucet, the button is electrically connected with the control device, and the button is used for manually controlling the rearview mirrors to deflect.

8. An intelligent adjusting device for rearview mirrors of electric vehicles and motorcycles as claimed in claim 6, further comprising a timer, wherein said timer is electrically connected with said control device, and the duration of the key function is preset by said timer, so as to control the rearview mirrors to deflect or reset according to different key durations.

9. The intelligent rearview mirror adjusting device for electric vehicles and motorcycles as claimed in claim 5, wherein said driving mechanism comprises a worm gear device and a lead screw nut device,

the worm gear and worm device controls the rearview mirror to rotate and revolve;

the rearview mirror deflection is controlled through the lead screw nut device.

Technical Field

The invention relates to the technical field of rearview mirrors, in particular to an intelligent adjusting method and device for rearview mirrors of electric vehicles and motorcycles.

Background

Due to the convenience of the electric vehicle/motorcycle, the electric vehicle/motorcycle becomes one of the best choices for people to travel in short distance in daily life. The rearview mirror of the electric vehicle/motorcycle is an important accessory for ensuring riding safety.

The inventor of this application discovers, the regulation of current rear-view mirror when changing the personnel of riding, for the personnel of riding can normally observe the rear, need manual regulation rear-view mirror angle, unable automatic realization. The existing rearview mirror is usually fixed on a faucet of an electric vehicle/motorcycle, when a rider rides the electric vehicle/motorcycle, the visual angle range of the rearview mirror is changed along with the rotation of the faucet, so that the rider cannot observe the rear situation through the rearview mirror, and traffic accidents are easily caused.

The existing rearview mirror is manually adjusted, however, when strong light irradiates at the rear, light can be reflected to the eyes of a riding person through the rearview mirror, the sight of the riding person is seriously interfered, and traffic hidden troubles are caused.

Disclosure of Invention

The embodiment of the application provides an intelligent adjusting method and device for rearview mirrors of electric vehicles and motorcycles, and solves the technical problems that in the prior art, due to the fact that the rearview mirrors of the electric vehicles and the motorcycles are fixedly connected with a faucet, when riding and steering are caused, the visual angle range of the rearview mirrors is limited, and the rearview mirrors reflect light and are dizzy.

In a first aspect, an embodiment of the present application provides an intelligent adjusting method for rearview mirrors of electric vehicles and motorcycles, where the method includes:

s1: receiving the rotation direction and angle data of the electric vehicle/motorcycle steering head collected by the angle sensor in real time; meanwhile, receiving distance data from the head and the trunk of the riding person to the faucet rotation center, which are acquired by the infrared sensor in real time;

s2: inputting the rotating direction, the angle data and the distance data into a pre-trained height-angle intelligent algorithm model, and outputting angle adjusting data required by the rearview mirror;

s3: and controlling a driving mechanism where the rearview mirror is located to move according to the output data of the required adjusting angle of the rearview mirror, and driving the rearview mirror to deflect/rotate to the required adjusting angle.

Further, the height-angle intelligent algorithm model in step S2 adopts a deep learning neural network training model, including:

an input layer for inputting a head-to-center-of-rotation distance value X1, a torso-to-center-of-rotation distance value X2, and a fixed parameter C;

the output layer is used for outputting a rearview mirror deflection angle Y1 and a rearview mirror rotation angle Y2;

and a hidden layer for calculating weight values and correlations of each neuron by using a back propagation algorithm.

Further, in the height-angle intelligent algorithm model, the relationship between the faucet rotation angle data and the deflection or rotation of the rearview mirror is as follows:

wherein beta is the rotation angle of the faucet, alpha is the included angle between the rearview mirror and the faucet, a is the distance from the head to the rotation center, and b is the distance from the rearview mirror to the rotation center of the faucet.

Further, the angle sensor adopts a Hall sensor; the electric vehicle/motorcycle faucet rotating shaft is characterized in that a plurality of magnets matched with the Hall sensors are fixedly arranged on the same side of the electric vehicle/motorcycle faucet rotating shaft, the magnets are located on the same circumference, and the magnet interval angles are the same.

Further, the angle sensor comprises 2 Hall sensors, the faucet rotating shaft comprises 6 magnets, and the interval angle of the magnets is 20 degrees; each Hall sensor respectively senses 3 adjacent magnets so as to acquire clockwise/anticlockwise rotation directions and angles of electric vehicle and motorcycle faucets according to sensing signals sent by any Hall sensor.

In a second aspect, an embodiment of the present application provides an intelligent adjusting device for rearview mirrors of electric vehicles and motorcycles, which adopts the intelligent adjusting method for rearview mirrors of electric vehicles and motorcycles of the first aspect, and includes: the device comprises a control device, an infrared sensor, an angle sensor and a driving mechanism, wherein the angle sensor, the driving mechanism and the infrared sensor are respectively and electrically connected with the control device; the infrared sensor is arranged on an instrument panel of the electric vehicle/motorcycle, and the driving mechanism is fixed on a faucet of the electric vehicle/motorcycle and is used for movably mounting a rearview mirror;

the control device takes an STM32F4 single chip microcomputer as an inner core, obtains distance data from the head and the trunk of a rider to a faucet rotation center through the infrared sensor, collects the rotation direction and angle data of the electric vehicle/motorcycle faucet through the angle sensor, outputs the adjusting angle required by the rearview mirror according to a pre-trained height-angle intelligent algorithm model, and drives the rearview mirror to rotate to the required adjusting angle data by driving the driving mechanism;

and inputting the rotating direction, the angle data and the distance data into a pre-trained body height-angle intelligent algorithm model, outputting a required adjusting angle of the rearview mirror, controlling a driving mechanism where the rearview mirror is located to move, and driving the rearview mirror to deflect/rotate to the required adjusting angle.

The rearview mirror is characterized by further comprising a key, wherein the key is arranged near a handle of the faucet and electrically connected with the control device, and the rearview mirror is manually controlled to deflect through the key.

The rearview mirror further comprises a timer, wherein the timer is electrically connected with the control device, and the time length of the key function is preset through the timer so as to control the rearview mirror to deflect or reset according to different key time lengths.

Further, the driving mechanism comprises a worm gear device and a lead screw nut device,

the worm gear and worm device controls the rearview mirror to rotate and revolve;

the rearview mirror deflection is controlled through the lead screw nut device.

The method and the device for adjusting the rearview mirrors of the electric vehicles and the motorcycles, which are provided by the embodiment of the application, at least have the following technical effects:

1, owing to adopt the intelligent regulation rear-view mirror, the current personnel of riding are matchd to the rear-view mirror to ensure that the rear-view mirror adjustment is the angle that is most suitable current personnel of riding.

2, the supplementary personnel of riding of this embodiment are when riding to turn to, and the control rear-view mirror gyration guarantees that the personnel of riding ride the gesture change and rotate leading in-process and do not influence its observation rear-view mirror.

3, owing to adopted the button, can manually adjust the rear-view mirror and deflect, for electric motor car, motorcycle personnel of riding provide the anti-dazzle mesh adjustment mode of rear-view mirror, the personnel of riding of being convenient for adjust the rear-view mirror in going, avoid the rear-view mirror highlight to disturb the personnel of riding and go.

Drawings

Fig. 1 is a flowchart of a rearview mirror adjusting method for an electric vehicle or a motorcycle according to an embodiment of the present application;

fig. 2 is a diagram of a deep learning neural network algorithm model structure of a rearview mirror of an electric vehicle or a motorcycle according to an embodiment of the present application.

FIG. 3 is a schematic diagram of the angle and direction position of the Hall sensor of the electric vehicle and the motorcycle according to the embodiment of the application;

fig. 4 is a block diagram of a rearview mirror adjusting device of an electric vehicle or a motorcycle according to an embodiment of the present application;

fig. 5 is a mechanical structure diagram of a rear view mirror of an electric vehicle or a motorcycle according to an embodiment of the present application;

FIG. 6 is a schematic view of the rear view mirror of the electric vehicle and motorcycle according to the embodiment of the present application;

reference numerals:

the control device comprises a control device 1, an angle sensor 2, a driving mechanism 3, a key 4, a timer 5, an infrared sensor 6, a Hall sensor 21, a left magnet 22, a right magnet 23, a faucet rotating shaft 24, a first hinge 31, a worm 32, a rearview mirror supporting rod 33, a turbine 34, a lead screw 35, a supporting plate 36, a second hinge 37 and a nut 38.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

Example 1

Referring to fig. 1, the present embodiment provides an intelligent adjusting method for rearview mirrors of electric vehicles and motorcycles, which includes the following steps.

Step S1: receiving the rotation direction and angle data of the electric vehicle/motorcycle steering head collected by the angle sensor in real time; meanwhile, the distance data from the head and the trunk of the riding person to the faucet rotation center, which are acquired by the infrared sensor 6 in real time, are received.

In step S1, the infrared sensor 6 is installed in the middle of the dashboard of the electric vehicle/motorcycle, the infrared sensor 6 further includes an infrared emitter and an infrared receiver, the infrared emitter emits infrared rays, the infrared rays contact the riding personnel and then reflect, the infrared receiver receives the reflected infrared rays, and the distance from the human body to the rotation center of the faucet can be obtained by calculating the product of the time data of the infrared emission and the received reflection and the transmission rate of the infrared rays. Infrared sensor 6 in this embodiment further still includes rotary mechanism, rotary mechanism control infrared sensor 6 rotates at the plumb face, detects the distance data of personnel's head and the trunk of riding to tap rotation center.

In one embodiment, as shown with reference to fig. 2, the angle sensor 2 employs a hall sensor 21; the same side of electric motor car/motorcycle tap pivot sets firmly a plurality of magnets that match with hall sensor, and each magnet is located same circumference, and the magnet interval angle is the same. Referring to fig. 2, the angle sensor 2 comprises 2 hall sensors 21, the faucet rotating shaft 24 comprises 6 magnets, and the magnet interval angle is 20 degrees; each Hall sensor 21 respectively senses 3 adjacent magnets so as to acquire the clockwise/anticlockwise rotation direction and angle of the electric vehicle and motorcycle faucet according to a sensing signal sent by any Hall sensor. Preferably, when the values of the faucet rotation angle in the faucet-rearview mirror angle rotation comparison table are +/-20 degrees, +/-40 degrees and +/-60 degrees, the rotation angle of the rearview mirror is controlled. Further, the magnets on the faucet rotating shaft 24 are divided into 3 magnets, namely a left magnet 22 and a right magnet 23, and the Hall sensor 21 senses the left magnet 22 or the right magnet 23, so that when any one side of the magnets is sensed, the first magnet on the corresponding side can be known to be sensed, and the steering direction and angle of the faucet are obtained. In one embodiment, 6 magnets are distributed on the right side of a faucet rotating shaft 24 of the electric vehicle/motorcycle, two Hall sensors 21 are fixed on a vehicle frame, and the faucet rotating shaft 24 drives the magnets to rotate when rotating, so that the magnet passes through the two Hall sensors 21 in different orders, the rotating direction of the faucet rotating shaft 24 is judged, and the rotating angle is shown according to the number of the magnets.

Step S2: and inputting the rotating direction, the angle data and the distance data into a pre-trained height-angle intelligent algorithm model, and outputting angle adjusting data required by the rearview mirror.

In step S2, the height-angle intelligent algorithm model trained in advance is obtained by training data of the angle relationship between a large number of riders with different heights and the rearview mirror by using a deep learning neural network training algorithm.

Further, in step S2, the height-angle intelligent algorithm model adopts a deep learning neural network training model, and the height-angle intelligent algorithm model in step S2 adopts a deep learning neural network training model, including: an input layer for inputting a head-to-center-of-rotation distance value X1, a torso-to-center-of-rotation distance value X2, and a fixed parameter C; the output layer is used for outputting a rearview mirror deflection angle Y1 and a rearview mirror rotation angle Y2; and a hidden layer for calculating weight values and correlations of each neuron by using a back propagation algorithm. As shown in fig. 3, in the deep learning neural network training model of this embodiment, the first layer is an input layer whose input values include a head-rotation center distance value X1, a torso-rotation center distance value X2, and a fixed parameter C, the fourth layer is an output layer whose output values include a mirror deflection angle Y1 and a mirror rotation angle Y2, the middle hidden layer has 8 neurons, a weight value in each neuron is equal to a value of a previous layer X a weight of each item, neurons 1 to 4 are distributed in the first layer of the hidden layer, and neurons 5 to 8 are distributed in the second layer of the hidden layer. Each neuron has a correlation with all values of the anterior and posterior layers, and thus all arrows can be considered to contain the weights. A large amount of data of the height of a rider and the angle of a rearview mirror is obtained through experimental data, the data comprise data of the distance between the head of the rider and the body of the rider to the faucet rotation center and data of the rotation and deflection angle of the rearview mirror, the data are used for training values of weights in a model, and a BP algorithm (back propagation algorithm) is adopted in a training method. And the training model after training is stored in the singlechip and is ready for program calling.

Further, in the height-angle intelligent algorithm model, the relationship between the faucet rotation angle data and the deflection or rotation of the rearview mirror is as follows:

wherein beta is the rotation angle of the faucet, alpha is the included angle between the rearview mirror and the faucet, a is the distance from the head to the rotation center, and b is the distance from the rearview mirror to the rotation center of the faucet.

The above relation (1) is obtained by simplifying the following formulas (2), (3) and (4),

c²＝a²+b²-2ab cosβ (2)

beta is a rotation angle of the faucet, alpha is an included angle between the rearview mirror and the faucet, a is a distance from the human eye to a faucet rotation center, b is a distance from the rearview mirror to the faucet rotation center, c is a distance from the human eye to the rearview mirror, angle 1 is an included angle between a sight line and the faucet, and angle 2 is an included angle between the sight line and the a.

Step S3: and controlling a driving mechanism where the rearview mirror is located to move according to the output data of the required adjusting angle of the rearview mirror, and driving the rearview mirror to deflect/rotate to the required adjusting angle.

Example 2

Referring to fig. 4-6, the present embodiment provides an intelligent adjusting device for rearview mirrors of electric vehicles and motorcycles, which adopts the adjusting method for rearview mirrors of electric vehicles and motorcycles in embodiment 1. As shown in fig. 4, the apparatus includes: the device comprises a control device 1, an infrared sensor 6, an angle sensor 2 and a driving mechanism 3, wherein the angle sensor 2, the driving mechanism 3 and the infrared sensor 6 are respectively and electrically connected with the control device 1; the infrared sensor 6 is arranged on an instrument panel of the electric vehicle/motorcycle, and the driving mechanism 3 is arranged on a faucet of the electric vehicle/motorcycle and is used for movably mounting a rearview mirror. Further, a mirror support rod 33 is fixed to the drive mechanism 3.

In this embodiment, the control device 1 uses an STM32F4 single chip microcomputer as an inner core, receives distance data from the head and the trunk of a riding person collected by the infrared sensor 6 to a faucet rotation center, receives the rotation direction and the angle data of the electric vehicle/motorcycle faucet collected by the angle sensor 2, inputs the rotation direction, the angle data and the distance data into a pre-trained body height-angle intelligent algorithm model, outputs an adjusting angle required by the rearview mirror, controls the driving mechanism where the rearview mirror is located to move, and drives the rearview mirror to deflect/rotate to the required adjusting angle.

In this embodiment, the preset program of STM32F4 singlechip contains: the data receiving program of the infrared sensor 6, the angle sensor receiving program, the deep learning algorithm model, the faucet rotation angle and rearview mirror rotation relational expression and the motor driving program, and the pseudo code of the programs can be expressed as follows:

in the main cycle, a is the distance from the trunk of the rider to the rotation center, the infrared sensor 6 is rotated, b is the distance from the head of the rider to the rotation center, c is the angle sensor data, a and b are introduced into the deep learning algorithm model, and the angle value output by the deep learning algorithm, d1 is the rearview mirror rotation angle 1, and e is the rearview mirror deflection angle, are obtained.

And (c) introducing the a and the c into a relation between the faucet rotation angle and the rearview mirror rotation, obtaining d2 which is equal to the rearview mirror rotation angle 2, d which is equal to d1+ d2, and introducing the c and the d into a motor control program to control the rearview mirror rotation.

And when the vehicle is interrupted, judging 1, wherein the button is pressed and the rearview mirror does not deflect, judging 1-1: the key pressing time is 3-10s:1, and the deflection of the rearview mirror is controlled; 2. timing for 30 s; 3. controlling the rearview mirror to reset; 4. returning to the main circulation; judgment 1-2: the key pressing time is more than 10s:1, and the deflection of the rearview mirror is controlled; 2. and returning to the main circulation.

The device in the embodiment further comprises a key 4, the key 4 is arranged near a handle of the faucet, the key 4 is electrically connected with the control device 1, and the rearview mirror is manually controlled to deflect through the key 4. Further, the rearview mirror control device further comprises a timer 5, wherein the timer 5 is electrically connected with the control device 1, and the time length of the function of the key 4 is preset through the timer 5 so as to control the rearview mirror to deflect or reset according to different time lengths of the key 4. In one embodiment, the operation of the key 4 comprises a short press and a long press, the short press, such as a short press for 2 seconds, the key 4 sends a signal to the control device 1, the control device 1 receives the key signal, controls the driving mechanism 3 to rotate, and drives the rearview mirror to deflect through the rotation of the driving mechanism 3; and a timer 5 is used for timing for a plurality of seconds, for example, 30 seconds, a timing interrupt signal is generated and sent to the control device 1, and the control device 1 receives the timing interrupt signal and controls the driving mechanism 3 to rotate reversely to drive the rearview mirror to reset. When the long press is performed for 10s, the control device 1 receives the long press control signal and controls the driving mechanism 3 to rotate, and when the next key signal is obtained, the driving mechanism 3 is controlled to rotate to reset the rearview mirror. In this embodiment because used the button in this embodiment for when having the highlight reflection on the speculum, the personnel of riding press the case, and controlling means receives key signal, control rear-view mirror down polarization, make the highlight no longer penetrate directly in the personnel's of riding eye.

In the embodiment, the driving mechanism 3 comprises a worm gear device and a lead screw nut device, and the rotation of the rearview mirror is controlled by the worm gear device; the deflection of the rearview mirror is controlled through a lead screw nut device.

In one embodiment, the driving mechanism 3 further comprises a support plate 36, a first hinge 31 and a second hinge 37, wherein one end of the support plate 36 is hinged and fixed on the faucet of the electric vehicle or the motorcycle through the first hinge 31. Further, a worm gear device is fixedly provided at an upper end portion of the support plate 36. The screw nut device comprises a screw 35, a nut 38 and a second motor, wherein the nut 38 is arranged on the screw 35 in a rotating mode. The other end of the supporting plate 36 is screwed to the screw 35 through a second hinge 37, and the second hinge 37 is located at the upper end of the nut 38. The screw 35 is fixed on the tap of the electric vehicle and the motorcycle, so that the second hinge 37 moves up and down on the screw 35 by driving the rotating nut 38 through the second motor, and the first hinge 31 is fixed, thereby realizing the deflection of the support plate 36 to drive the rearview mirror to deflect.

Further, the worm and gear device comprises a first motor, a worm gear 34 and a worm 32, wherein the worm gear 34 is in transmission connection with the worm 32, the worm 32 is connected with the first motor, the first motor is connected with the control device 1, and the worm gear 34 is connected with the rearview mirror support rod 33, so that the control device 1 sends a rotation signal to control the first motor to rotate, the first motor drives the worm gear 32 to rotate, the worm gear 32 drives the worm gear 34 to rotate, and the worm gear 34 drives the rearview mirror to rotate. The first motor and the second motor in the embodiment have a self-locking function, and the precision of the transmission mechanism is not influenced when the riding personnel adjust the rearview mirror by themselves.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.