CN202669608U - Intelligent auxiliary illuminating device for car - Google Patents

Abstract

This utility model discloses an intelligent auxiliary lighting device for automobiles. Four stepper motors, symmetrically mounted on the left and right sides of the headlights and auxiliary lights, are controlled by a microcontroller and drive the headlights and auxiliary lights to rotate in pitch via transmission gears. A first gear is mounted at the end of the stepper motor shaft, and a second gear meshes with the first gear on the rotating shaft of the headlights and auxiliary lights. The stepper motors drive the headlights and auxiliary lighting device to adjust their pitch through the reduction speed of the second gear. This utility model can automatically adjust the illumination angle of the headlights according to the tilt angle of the vehicle body, ensuring the driver has sufficient visibility and avoiding glare for oncoming or preceding vehicles. Furthermore, it can provide automatically adjustable projection angle auxiliary lighting to the driver when the vehicle is traveling at high speed, improving safety during nighttime high-speed driving.

Description

An intelligent auxiliary lighting device for automobiles

technical field

The utility model belongs to the field of automobile intelligent control, and more specifically relates to an automobile intelligent auxiliary lighting device.

Background technique

With the development of society, cars began to enter thousands of households, followed by a rapid increase in traffic accidents, and people began to pay more and more attention to car safety. Nighttime is a time when traffic accidents frequently occur, and traffic accidents caused by lighting problems account for more than half of nighttime traffic accidents, and the death rate is also significantly higher than that during the day, basically reaching twice the daytime. At present, the lighting devices installed on the car are basically fixed on the car body, so when the load behind the car is heavy, such as placing heavy objects in the trunk, etc., and when the car accelerates or brakes, the front light The illumination angle of the light will change, which will affect the driver's normal field of vision and road information, and will not have enough reaction time in case of an emergency, thus affecting driving safety. At the same time, it will also dazzle the oncoming car or the driver of the front car, endangering the driving safety of others.

In addition, when the car is driving on the expressway, the speed is high and the braking distance is long. At this time, the irradiation light intensity and irradiation distance provided by the headlights are difficult to meet the driver's high-speed driving requirements, because the irradiation distance is smaller than that of the car. Braking distance, when it is found that there is an obstacle or an emergency within the front irradiation distance, traffic accidents are very likely to occur, and because of the high speed, the car is often destroyed and the consequences are very serious.

Therefore, it is extremely urgent and practical to develop a kind of intelligent auxiliary lighting device that can improve driving safety at night.

Utility model content

Aiming at the problems raised in the above-mentioned background technology, the purpose of this utility model is to provide an intelligent auxiliary lighting device for automobiles, which can automatically adjust the headlights when the car body is pitched and tilted due to changes in front and rear loads, acceleration and braking. Make sure that the projection angle is within the appropriate range, which can ensure good illumination effect without dazzling oncoming vehicles and drivers in front. At the same time, the device can automatically turn on the auxiliary headlights when the car is running at high speed, and automatically adjust the irradiation angle of the auxiliary headlights according to the current real-time speed, thereby providing the driver with sufficient and excellent lighting light, which greatly improves nighttime lighting. Driving safety.

In order to achieve the above object, the utility model takes the following technical solutions:

An automotive intelligent auxiliary lighting device, comprising:

Two vehicle body height sensors are respectively installed in the middle of the front axle and the rear axle of the car, which are used to monitor the height changes of the front axle and rear axle of the vehicle in real time and input them into the single-chip microcomputer;

The vehicle speed sensor installed in the transmission case is used to monitor the real-time vehicle speed of the vehicle;

The two auxiliary lighting lamps installed symmetrically on the inside of the left and right headlights of the car, when the vehicle speed is greater than the preset value, are turned on by the single-chip microcomputer to provide auxiliary lighting for the driver;

The left and right symmetrical four stepping motors installed on the headlights and auxiliary lighting lamps are controlled by a single-chip microcomputer, and drive the pitching rotation of the headlights and auxiliary lighting lamps through transmission gears; a first gear is installed at the end of the stepping motor shaft , the rotation shafts of the headlight and the auxiliary lighting are provided with a second gear that meshes with the first gear, and the stepping motor drives the headlight and the auxiliary lighting through the second gear to reduce the pitch adjustment;

The indicator light is turned on under the control of the single-chip microcomputer when the auxiliary lighting is turned on, giving the driver a reminder;

The single-chip microcomputer is used to control the work of the indicator light and the stepping motor according to the information provided by the vehicle height sensor and the vehicle speed sensor, and automatically adjust the irradiation angle of the headlight and the auxiliary light;

The vehicle body height sensor and the vehicle speed sensor are respectively connected to the input end of the single-chip microcomputer, and the stepping motor and the indicator light are connected to the output end of the single-chip microcomputer.

Wherein, preferably, the preset value is 80Km/h; when the inclination angle θ of the vehicle body is greater than the preset threshold value, the single-chip microcomputer controls the rotation of the first stepper motor, and drives the headlight to pitch and rotate through gear transmission, The angle of rotation is θ, and the direction of rotation is opposite to the pitch direction of the vehicle body; the angle of inclination θ

θ＝tan ^-1 ((dHr-dHf)/L)

Wherein, L represents the distance between front and rear axles, dHr refers to the amount of change in height of the rear wheels, and dHf represents the amount of change in height of the front wheels; after the real-time speed V of the vehicle collected by the vehicle speed sensor 2 is greater than the preset value, the auxiliary lighting is turned on, and its rotation angle

其中，V是实时车速；车身的倾斜角度θ小于或等于预先设定的阈值，单片机控制第一步进电机回转到初始位置，驱动前照灯回复到正常位置；所述步进电机是永磁感应式步进电机；所述汽车智能辅助照明装置设有手动开关。

Among them, V is the real-time vehicle speed; the inclination angle θ of the vehicle body is less than or equal to the preset threshold value, the single-chip microcomputer controls the first stepping motor to rotate to the initial position, and drives the headlight to return to the normal position; the stepping motor is a permanent magnet induction type stepping motor; the automobile intelligent auxiliary lighting device is provided with a manual switch.

Other features of the utility model are:

The vehicle height sensor is a photoelectric vehicle height sensor.

Described single-chip microcomputer selects AT89C51 type single-chip microcomputer for use.

The stepper motor is a 42BYG series permanent magnet induction sub-type stepper motor.

Described indicator light selects green LED light for use.

With a manual switch, the system can be manually turned on and off according to road conditions.

The utility model provides an intelligent auxiliary lighting device for automobiles, which can automatically adjust the irradiation angle of the headlights according to the pitch and tilt angle of the vehicle body, so as to ensure that the driver can obtain a sufficient field of vision and avoid dazzling oncoming vehicles or vehicles in front. When the car is running at high speed, it provides the driver with auxiliary lighting that can automatically adjust the projection angle according to the speed of the car to improve the safety of high-speed driving at night. Another advantage of the utility model is that it has wide adaptability, high degree of automation, timely response, sensitive response and precise control due to the adoption of electronic control.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the schematic diagram of mechanical structure of the utility model

Figure 3 is a schematic diagram of calculating the tilt angle of the vehicle body.

The labels in the figure represent respectively, 1, vehicle body height sensor; 2, vehicle speed sensor; 3, single-chip microcomputer; 4, the first stepping motor; , Auxiliary lighting lamp; 9, the first gear; 10, the second gear; 11, the rotating shaft.

Below in conjunction with accompanying drawing and embodiment the utility model is further explained.

Detailed ways

With reference to Fig. 1, 2, present embodiment provides the structure of a kind of automobile intelligent auxiliary lighting device, comprises vehicle body height sensor 1, vehicle speed sensor 2, single-chip microcomputer 3, first stepper motor 4, second stepper motor 5, indicator light 6. Headlight 7, auxiliary lighting 8, first gear 9, second gear 10 and rotating shaft 11.

Two vehicle body height sensors 1 are respectively installed in the middle of the front axle and the rear axle of the car, and are used to collect the height variation of the front axle and the rear axle of the car;

The vehicle speed sensor 2 is installed in the square transmission housing and is used to collect the real-time speed of the vehicle;

The first stepper motor 4 is installed near the headlight 7 of the automobile. After the pitching and tilting of the vehicle body exceeds a preset threshold, it is turned on by the control of the single-chip microcomputer 3, and the headlight 7 is driven by a gear transmission mechanism for automatic pitch adjustment;

The second stepper motor 5 is installed near the auxiliary lighting lamp 8, and after the vehicle speed exceeds a preset value, it is controlled by the single-chip microcomputer 3 to open, and the auxiliary lighting lamp 8 is driven to pitch and rotate through a transmission mechanism;

The indicator light 6 is installed on the top of the instrument panel, and turns on after the auxiliary light 8 is turned on, prompting the driver that the auxiliary light 8 is currently on;

Two auxiliary lighting lamps 8 are symmetrically installed on the inside of the left and right headlights, and are turned on when the speed of the vehicle exceeds a predetermined value to provide additional auxiliary lighting for the driver and ensure that the driver can obtain a sufficient field of vision.

The initial installation angle of the auxiliary lighting lamp 8 is the same as that of the headlight 7, and the single-chip microcomputer 3 controls the opening and closing of the auxiliary lighting lamp 8 by controlling the conduction and cut-off of the power transistor in the auxiliary lighting lamp circuit.

Vehicle body height sensor 1, vehicle speed sensor 2 are connected with the input end of single-chip microcomputer 3 respectively, and the first stepper motor 4, the second stepper motor 5 and indicator light 6 are connected with single-chip microcomputer 3 output ends respectively; Stepper motor shaft end device has The first gear 9 is provided with a second gear 10 meshing with the first gear 9 on the rotation shaft 11 of the headlamp.

In this embodiment, the transmission mechanism of the automobile headlight 7 is the same as the transmission mechanism of the auxiliary lighting lamp 8, and both transmit rotational motion through the meshing of the first gear 9 and the second gear 10, where the first and second gears The meshing also acts as a deceleration.

In this embodiment, the body height sensor 1 is a photoelectric body height sensor, the single-chip microcomputer 3 can be an 89C51 type single-chip microcomputer, and the first stepping motor 4 and the second stepping motor 5 are all selected 42BYG series permanent magnet induction sub-type stepping motors.

The working process of an automobile intelligent auxiliary lighting device is as follows:

After the system starts, the vehicle body height sensor 1 collects the real-time height variation of the front axle and the rear axle of the vehicle in real time, and transmits the collected information to the single-chip microcomputer 3, and the single-chip microcomputer 3 calculates the real-time longitudinal tilt angle θ of the vehicle body according to the preset program:

θ＝tan ^-1 ((dHr-dHf)/L)

As shown in Figure 3, L represents the distance between the front and rear axles, dHr refers to the change in height of the rear wheels, and dHf represents the change in height of the front wheels.

When the inclination angle θ of the vehicle body was greater than the preset threshold value, the single-chip microcomputer 3 controlled the first stepper motor 4 to rotate, and through the gear transmission mechanism, the headlight 7 was driven to pitch and rotate, and the angle of rotation was θ, and the direction of rotation was the same as the longitudinal direction of the vehicle body. The direction of inclination is opposite, that is, if the car leans forward, the headlight 7 turns upwards, and if the car leans backward, the headlight 7 turns downward, so as to keep a good irradiation angle and irradiation distance all the time. If the pitch angle θ of the vehicle body is less than or equal to the preset threshold, the single-chip microcomputer 3 controls the first stepper motor 4 to rotate to the initial position, and drives the headlight 7 to return to the normal position.

当车速降低到预设阈值一下，则关闭辅助照明灯8，控制第二步进电机5回转到初始位置，驱动辅助照明灯8复位。Simultaneously vehicle speed sensor 2 collects real-time speed information, and input to single-chip microcomputer 3, single-chip microcomputer 3 compares the real-time vehicle speed of automobile with the preset threshold value (here is set as 80Km/h), when the vehicle speed is greater than preset threshold value, open auxiliary lighting lamp 8, and turn on the second stepper motor 5, drive the auxiliary lighting lamp 8 to rotate upwards by a certain angle through the transmission mechanism

When the vehicle speed drops below the preset threshold, the auxiliary lighting lamp 8 is turned off, the second stepper motor 5 is controlled to rotate to the initial position, and the auxiliary lighting lamp 8 is driven to reset.

In this embodiment, a manual switch is provided, and the system can be manually turned on and off as required. Next, the rotation angle of the auxiliary lighting lamp 8 will be described.

The vehicle speed sensor 2 collects the real-time vehicle speed V of the automobile, and the auxiliary lighting lamp 8 is turned on after the vehicle speed is greater than a preset threshold (80Km/h). The adjustment angle range is 10°, so the rotation angle can be obtained by the following formula

Although the embodiments of the present utility model have been described above in conjunction with the accompanying drawings, the present utility model is not limited to the above-mentioned specific embodiments and application fields, and the above-mentioned specific embodiments are only illustrative, instructive, and not limiting sexual. Under the enlightenment of this specification and without departing from the protection scope of the claims of the present invention, those skilled in the art can make various forms, which all belong to the protection of the present invention.

Claims (1)

1. automobile intelligent auxiliary lighting apparatus comprises:

Two height sensors are installed in respectively automobile front axle and back axle middle part, are used for the high variable quantity of Real-Time Monitoring automobile front-axle and rear axle, and the input micro controller system;

Be installed in the car speed sensor in the transmission case, be used for monitoring the real-time speed of a motor vehicle of automobile;

Symmetry is installed in two assist illuminators of vehicle right and left head lamp inboard,, is opened by Single-chip Controlling, for chaufeur provides floor light during greater than preset value in the speed of a motor vehicle;

Be installed in symmetrical four stepping motors of head lamp and assist illuminator, by Single-chip Controlling, drive the pitch rotation of head lamp and assist illuminator by transmission gear; At the step motor shaft end fitting the first gear is arranged, be provided with the second gear that meshes with the first gear on the S. A. of head lamp and assist illuminator, stepping motor drives head lamp by this second gear reduction and auxiliary lighting apparatus carries out pitch regulation;

Indicator lamp is opened by Single-chip Controlling when assist illuminator is opened, and gives chaufeur with prompting;

The information that provides according to height sensor and car speed sensor is provided micro controller system, and the irradiating angle of head lamp and assist illuminator is regulated in the work of control indicator lamp and stepping motor automatically;

Height sensor is connected with car speed sensor with the input end of micro controller system and is connected, and stepping motor and indicator lamp are connected to the micro controller system mouth.

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