CN100398358C - Automobile rearview mirror capable of automatically adjusting angle according to automobile posture - Google Patents

Abstract

The invention relates to an automobile rearview mirror capable of automatically adjusting an angle along with a vehicle posture, which mainly detects the change of the height of a vehicle body and adjusts the angle of a vehicle side rearview mirror according to the height difference, and because the view field range of the vehicle side rearview mirror is reduced due to the problems of load, tire leakage and the like (vehicle body reduction), the invention controls the vehicle side rearview mirror to compensate the reduced view field range caused by the change of the height of the vehicle body by detecting the change of the height of the vehicle body, thereby ensuring the range of the back view field of a driver, avoiding the change of the vehicle posture or the change of the vehicle speed and effectively ensuring the driving safety.

Description

Car rearview mirror that automatically adjusts the angle according to the car posture

technical field

The invention relates to an electric automobile rearview mirror, in particular to an automobile rearview mirror whose angle is automatically adjusted according to the posture of the automobile.

Background technique

As the related devices inside the vehicle are all oriented toward electronic and electric design, the vehicle provides more and more convenient operation functions for the driver. At present, in addition to the automatic design of the equipment in the vehicle, the lights and direction lights have been improved and have electric adjustment. function. Among them, the main purpose of improving the rearview mirror to be electric is that the drivers of the same vehicle have different shapes. When driving the same vehicle, the driver needs to adjust the vehicle seat and then adjust the angle of the rearview mirror. Manual adjustment is not accurate enough. And troublesome, therefore, at present car side rear view mirror all has electric function.

Most car manufacturers still retain manual electric adjustment, and some car manufacturers will further provide a memory function, so that when a specific driver is driving, he can directly select the memory function key to adjust the rearview mirror to a preset angle. Regardless of the manual or memory adjustment of the angle design of the rearview mirror, it is an action to be carried out before driving, so the angle of the rearview mirror will not be changed when the vehicle is driving. However, many of the current car accidents are caused by the driver's inability to detect the vehicle conditions in the blind spot. With the current design of the electric rearview mirror, there is a patent to control the rearview mirror according to different vehicle conditions or road conditions. viewing angle.

Just as the Taiwan Announcement No. 448874 "Automatic Adjustment Device for Automobile Rearview Mirror" new patent, its previous technology refers to the design of automatically adjusting the rearview mirror, which is based on whether the turn signal is activated or not, and the rearview mirror is controlled. The left and right deflection increases the driver's field of vision when turning, but this kind of automatic direction control rearview mirror can only show the advantages of increasing the field of vision when driving on flat ground, and it is not obvious at all when driving on uphill or downhill roads. benefit. Therefore, this new patent provides a side rearview mirror that can be adjusted according to the driving road conditions, especially for uphill and downhill road conditions. The fixed angle of view of the mirror reduces the scope of the rear view, but this new patent detects the uphill and downhill road sections using a physical detection structure. As shown in the patent Figure 1B, the physical detector includes a heavy Hammer, a grating sheet and an infrared interrupter; wherein the weight is fixed on the grating sheet, and a grating hole is provided on the periphery of the grating sheet, so that the transmitting end of the infrared interrupter can pass through the grating hole, so that the receiving end Continuously receive the signal transmitted by the transmitting end, and then integrate the control circuit to receive the receiving signal of the infrared interrupter, and then control the relay in the electric rearview mirror according to the received signal, and determine the direction of rotation of the motor in the rearview mirror, so as to achieve Control the swing of the rearview mirror at an upward or downward angle.

It can be seen from the above description that this new patent mainly uses the physical characteristics of the weight to be always perpendicular to the horizontal line as the basis for controlling the up and down angle swing of the rearview mirror. However, the design of this detector is not ideal, because the weight is in addition to It will respond to the uphill and downhill sections. When the vehicle brakes or activates, the hanging weight will also swing under the force, and then adjust the angle of the rearview mirror. Therefore, installing this new patented automatic rearview mirror There may be malfunctions, and since the detector uses light interruption counting detection, its installation environment and location need to be carefully considered, which is quite inconvenient.

From this new patented technology and its previous technology, it can be seen that the current side rearview mirror has the function of adjusting different angles of up, down, left, and right. Depending on the detection method of the control terminal, it is possible to design a side mirror with different functions. .

In addition to adapting to changes in road conditions and adjusting the angle of view of the rearview mirror when turning to increase the field of vision, the vehicle will also cause the vehicle's posture (referred to as the vehicle posture) to be different from the state when it is stationary due to problems such as load, tire leakage, and vehicle speed. Relatively affect the angle of the rearview mirror fixed on the vehicle, and change the driver's rear sight range. And the various situations of changing the posture of the car in the front row are not the same effect that any electric rearview mirror can compensate with the change of the posture of the vehicle or dynamically adjust the angle of the rearview mirror to the preset angle.

Since the side rearview mirror determines the driver's control of the vehicle's side or side lanes, its rear view angle should be in various vehicle postures, so that the driver has the largest field of vision, so as to ensure driving safety.

Contents of the invention

The main purpose of the present invention is to provide a car rearview mirror that automatically adjusts the angle according to the vehicle posture. angle.

The main technical means used to achieve the above-mentioned purpose is to make the car rearview mirror include:

A microprocessor, including an automatic adjustment program;

At least one automatic horizontal aiming sensor, the output end of which is connected to the input end of the microprocessor through a signal conversion interface, and the signal of detecting the change of vehicle posture is converted into a signal readable by the microprocessor; wherein the automatic horizontal aiming sensor It is used to sense the gap between the front and rear of the vehicle body and the ground, so as to judge the posture of the vehicle body due to the load, tire leakage and other factors that cause the height of the vehicle body to drop; and

A motor driver, connected to the output terminal of the microprocessor and the control terminal of the internal motor of the rearview mirror, the microprocessor controls the interior of the side rearview mirror through the motor driver according to the change of the detection signal of the automatic horizontal aiming sensor. The rotation and speed of the motor.

The present invention mainly adopts the automatic horizontal aiming sensor capable of detecting the change of the vehicle body height, cooperates with the programming design of the automatic adjustment device of the microprocessor, when the vehicle is in a low-height posture due to other factors (such as tire leakage), micro The processor can adjust the angle of the side rearview mirror according to the detection signal (height difference), compensate for the reduced range of the rear view caused by the change of the height of the vehicle body, and ensure that the range of the driver's rear view does not change due to changes in the vehicle's posture or speed, effectively ensuring Driving safety.

The second purpose of the present invention is to provide a kind of car side rearview mirror that can compensate for the vehicle speed and cause the rear view distance to reduce. / hour), when the vehicle speed exceeds this default value, it is also necessary to control the rearview mirror to fine-tune the angle to compensate for the reduced rear view distance caused by the vehicle speed.

Description of drawings

Fig. 1 is a circuit block diagram of a preferred embodiment of the vehicle side rearview mirror of the present invention.

2A and B are schematic diagrams of the present invention installed on the front and back of a truck.

FIG. 3 is a flow chart of the built-in automatic adjustment program of the micro-processing of the present invention.

Explanation of main component symbols

10 Microprocessor 11 Automatic level aiming sensor

12 auto level aiming sensors

13 signal conversion interface 14 switch

15 warning circuit 16 motor driver

17 Vehicle speed sensor 20 Rearview mirror

21 motor 30 vehicle

Detailed ways

At first please refer to shown in Fig. 1, be the circuit block diagram of a preferred embodiment of the present invention, it comprises:

A microprocessor 10 includes an automatic adjustment program, and its output terminal can be connected to a warning circuit 15, which can be a siren or a light indicator;

At least one automatic horizontal aiming sensor 11, 12, its output terminal is connected to the input terminal of the microprocessor 10 through a signal conversion interface 13, and the signal of detecting the vehicle attitude change is converted into a signal readable by the microprocessor 10; Among them, the automatic horizontal aiming sensors 11, 12 are used to sense the gaps H1, H2 between the front and rear of the vehicle body and the ground, as shown in Figure 2A, to determine the height of the vehicle body due to factors such as load and tire leakage. posture changes; and

A motor driver 16 is connected to the output terminal of the microprocessor 10 and the control terminal of the internal motor 21 of the rearview mirror 20. The driver 16 controls the steering and rotation speed of the motor 21 in the side rearview mirror 20 .

In order to make the rearview mirror 20 of the present invention still retain the function of manual adjustment, a switch 14 connected to the input end of the microprocessor 10 is added to make the microprocessor 10 detect the switch before performing the automatic adjustment program. If the state of 14 is open (short circuit), it means that the automatic adjustment program is activated; otherwise, when the switch 14 is in the closed state (open circuit), it means that the automatic adjustment program is not used.

Please refer to Fig. 2A and B shown, for the present invention uses two automatic horizontal aiming sensors 11, 12 at the front and rear positions of the vehicle 30, which is an electronic component, so it can directly output electronic signals to the microprocessor 10, when When the vehicle 30 changes from unloaded to loaded, the height of the vehicle body will drop. At this time, the two automatic horizontal aiming sensors will respectively output corresponding electronic signals H1' and H2' based on the difference between their setting position detection and the horizontal plane. At this time, the micro The processor 10 can accurately judge the height of the vehicle body after the current load by the difference between the detection signals of the two automatic horizontal aiming sensors, so that the motor driver 16 can be controlled accordingly to drive the motor in the side rearview mirror 20 21 deflects a backsight angle that compensates for this height difference.

Since the automatic level aiming sensors 11 and 12 detect the gap between the body of the vehicle 30 and the ground, and output the corresponding electronic signal of the gap, when the vehicle 30 is caused by other factors (such as tire leakage), the vehicle 30 presents a vehicle with a low height. posture, then the present invention can adjust the angle of the side rearview mirror to compensate for the reduced range of the rear view caused by the height change of the vehicle body, so as to ensure the range of the driver's rear view.

Again, the speed of the vehicle will also affect the driver's rear vision range, so the input end of the microprocessor 10 of the present invention is connected to a speed signal, which can be captured from the computer in the car, or a speed detector 17 is set In this way, when the microprocessor judges the inclination angle of the vehicle, the factors affecting the vehicle speed can also be considered, so that the adjustment of the side rearview mirror is more accurate.

Please refer to Fig. 3, it is the flow chart of microprocessor automatic adjustment program (adding the judgment of vehicle speed) of the present invention:

When it is judged that the switching switch is turned on 50, it enters the automatic adjustment program. First, the initial detection step 51 is performed, that is, the motors in the side rearview mirrors of the two vehicles are controlled to deflect up and down a certain angle range, and then return to the preset angle position. To judge whether the rearview mirror is abnormal 52, when this initial detection step is completed and it is found that the side rearview mirrors of both vehicles can return to the preset angle position, then it is judged that the side rearview mirrors of the two vehicles can currently operate normally, otherwise, activate the The warning circuit 53 prompts the motorized function of the driver's side rearview mirror to be abnormal, and then ends this program 54. If there is no abnormality in the initial detection step, the vehicle speed signal 55 is received to determine whether the vehicle speed exceeds a preset vehicle speed value (can be set as a low speed, about 20Km/H) 56, if not, it means that the vehicle is currently in a slow or stationary state, Then receive the detection signal 57 of the automatic horizontal aiming sensor to judge whether the current vehicle body has a height change 58, and if so, output a compensation control signal 59 according to the height difference to adjust the side mirror or deflect 60 up or down to compensate The reduced field of view caused by this tilt angle. If the vehicle speed is higher than the predetermined vehicle speed (affecting the vehicle attitude), then output a vehicle speed compensation control signal 61 according to the current vehicle speed to fine-tune the rearview mirror angle 60 to maintain the driver's rear view range. After adjusting the rearview mirror angle once, Then judge whether the switch 62 is still on, if so, repeat the aforementioned judgment, calculation and control actions, if not, it means that the driver closes this automatic adjustment function, so this adjustment procedure 54 is ended.

The above-mentioned automatic adjustment program adds the judgment of the speed of the vehicle, but when the present invention does not add the judgment of the speed of the vehicle, when the result is normal after the initial detection step is executed, the detection signal of the automatic horizontal aiming sensor is directly received to judge whether there is a height change in the current vehicle body , if there is, then adjust the side rearview mirror or deflect up or down according to the height difference to compensate for the reduced field of vision caused by this tilt angle.

As can be seen from the above description, the present invention can indeed adjust the rear view angle of the side mirrors according to changes in vehicle attitude and speed, so that the driver's rear sight range does not change due to changes in vehicle attitude or speed, ensuring driving safety.

Claims (10)

1. the automobile rearview mirror of an automatic angular adjustment accompaning is characterized in that, includes: a microprocessor includes an automatic adjustment program;

At least one automatic horizontal is sighted sensor, and its mouth sees through the input end that a signal translation interface is connected to this microprocessor, and the signal that the inspection vehicle appearance is changed is converted to the microprocessor readable signal; Wherein automatic horizontal is sighted sensor in order to the forward and backward and ground-surface gap of the vehicle body of senses vehicle; And

One motor driver is connected to the mouth of this microprocessor and the control end of back mirror internal motor, and this microprocessor is sighted the change in detection signal of sensor according to this automatic horizontal, sees through turning to and rotating speed of motor driver control vehicle side rearview mirror inner motor.

2. the automobile rearview mirror of automatic angular adjustment accompaning as claimed in claim 1 is characterized in that, this microprocessor input end connects one and switches switch.

3. the automobile rearview mirror of automatic angular adjustment accompaning as claimed in claim 1 or 2 is characterized in that, this microprocessor input end connects a speed of a motor vehicle detection signal.

4. the automobile rearview mirror of automatic angular adjustment accompaning as claimed in claim 1 or 2 is characterized in that, includes two automatic horizontals and sights sensor, is installed in the vehicle front-back direction respectively.

5. the automobile rearview mirror of automatic angular adjustment accompaning as claimed in claim 1 is characterized in that, the mouth of this microprocessor connects a warning circuit.

6. the automobile rearview mirror of automatic angular adjustment accompaning as claimed in claim 5 is characterized in that, this warning circuit is a siren horn.

7. the automobile rearview mirror of automatic angular adjustment accompaning as claimed in claim 5 is characterized in that, this warning circuit is a cresset indicating device.

8. the automobile rearview mirror of automatic angular adjustment accompaning as claimed in claim 5 is characterized in that, the automatic adjustment routine package of this microprocessor contains:

The initial detecting step for the motor of controlling in two vehicle side rearview mirrors goes to upper and lower deflection certain angle scope, returns the predetermined angle position; All can get back to the predetermined angle position when two vehicle side rearview mirrors, then judge two vehicle side rearview mirrors energy normal operation at present, otherwise, then activate this warning circuit;

Judge the bodywork height step, sight the detection signal of sensor, judge whether present bodywork height changes,, then calculate diff-H according to detection signal if having for receiving automatic horizontal; And

Adjust the back mirror step, for adjusting vehicle side rearview mirror according to diff-H or going up or visual field reduction scope that deflect causes because of the Present Attitude difference with compensation.

9. the automobile rearview mirror of automatic angular adjustment accompaning as claimed in claim 3 is characterized in that, the mouth of this microprocessor connects a warning circuit.

10. the automobile rearview mirror of automatic angular adjustment accompaning as claimed in claim 9 is characterized in that, the automatic adjustment routine package of this microprocessor contains:

The initial detecting step for the motor of controlling in two vehicle side rearview mirrors goes to upper and lower deflection certain angle scope, returns the predetermined angle position; All can get back to the predetermined angle position when two vehicle side rearview mirrors, then judge two vehicle side rearview mirrors energy normal operation at present, otherwise, then activate this warning circuit;

The speed of a motor vehicle detects step, for receiving vehicle speed signal to judge whether the speed of a motor vehicle surpasses preset vehicle speed, if then compensate speed of a motor vehicle control signal according to present speed of a motor vehicle output one, fine setting back mirror angle; If not, then continue to judge up to carrying out next step above after the preset vehicle speed;

Judge the bodywork height step, sight the detection signal of sensor, judge whether present bodywork height changes,, then calculate diff-H according to detection signal if having for receiving automatic horizontal; And

Adjust the back mirror step, for adjusting vehicle side rearview mirror according to diff-H or going up or visual field reduction scope that deflect causes because of the Present Attitude difference with compensation.

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