CN202923476U - Automatic switching device for distance light and passing light during night driving - Google Patents

Abstract

The utility model discloses an automatic switching device for far and near light when driving at night, which comprises a high beam, a low beam, a beam splitter, a single-chip microcomputer, a photosensitive sensor, an ultrasonic radar range finder and a speed sensor, wherein the photosensitive sensor, the ultrasonic radar range finder The meter and the speed sensor are respectively connected to the single-chip microcomputer, the output end of the single-chip microcomputer is connected to the beam splitter, and the exit slit of the beam splitter is connected to the high beam and the low beam respectively. The utility model utilizes sensor technology, radar ranging technology, and single-chip microcomputer technology to realize the automatic switching of far and low beams during night driving, effectively avoiding possible driving accidents caused by improper use of high beams at night, and ensuring that drivers drive at night Safety. The device has the advantages of simple structure, high reliability and strong practicability, and can be widely applied to other motor vehicles.

Description

An automatic switching device for far and near light when driving at night

technical field

The utility model belongs to the technical field of automobile safety, in particular to an automatic switching device for far and near light when driving at night.

technical background

According to relevant data statistics, traffic accidents caused by incorrect use of high beams while driving at night account for about 30% of night traffic accidents. The position of the light beam of the car's high beam is relatively high, and it is basically level with the line of sight of the vehicle in front or the vehicle on the opposite side. A person's pupils shrink in bright light to reduce the amount of light entering. Conversely, when changing from strong light to a relatively dark environment, the pupils of a person will dilate to increase the amount of light entering, so that they can see the surrounding situation clearly. The zooming of the pupils requires a process, which creates a "momentary blind spot" that is white in front of the eyes. If the driver turns on the high beam in violation of the regulations, it will cause a momentary blind spot in the eyes of the other driver or cyclist. In this process, it is very easy to cause traffic accidents.

Contents of the invention

The purpose of the utility model is to provide an automatic switching device for high and low beams when driving at night, which can realize the automatic switching between high and low beams of the car lights during the night driving, thereby ensuring the safety of the driver.

In order to achieve the above tasks, the utility model adopts the following technical solutions to solve:

An automatic switching device for high and low beams for driving at night, comprising a high beam, a low beam, a beam splitter, a single-chip microcomputer, a photosensitive sensor, an ultrasonic radar rangefinder and a speed sensor, wherein the photosensitive sensor, the ultrasonic radar rangefinder and the speed sensor are respectively The single-chip microcomputer is connected, and the output end of the single-chip microcomputer is connected to the beam splitter, and the exit slits of the beam splitter are respectively connected to the high beam and the low beam.

The utility model also has the following other technical characteristics:

Described single-chip microcomputer adopts AT89C2051 single-chip microcomputer.

The photosensitive sensor adopts MOC6002 sensor.

The ultrasonic radar range finder adopts BW17-texIII range finder.

The speed sensor adopts JK08/NS43NCT1 sensor.

The utility model utilizes the sensor technology, the radar ranging technology and the single-chip microcomputer technology, and realizes the automatic switching of far and near light during the driving process of the car at night. Low beams are the main lights at night when there are street lights or well-lit urban roads, while high beams are used when driving on roads without street lights or poor lighting at night. The utility model effectively avoids driving accidents caused by improper use of the high beam at night, and ensures the driving safety of the driver at night. The device has the advantages of simple structure, high reliability and strong practicability, and can be widely applied to various motor vehicles.

Description of drawings

Fig. 1 is a structural connection diagram of the utility model.

Below in conjunction with accompanying drawing, the utility model is further described.

Detailed ways

Fig. 1 is the structural connection diagram of the present utility model, comprises high beam, low beam, beam splitter, single-chip microcomputer, photosensitive sensor, ultrasonic radar range finder and speed sensor, wherein, photosensitive sensor, ultrasonic radar range finder and speed sensor The single-chip microcomputers are respectively connected, the output end of the single-chip microcomputer is connected with a beam splitter, and the exit slits of the beam splitter are respectively connected with a high-beam lamp and a low-beam lamp. The single-chip microcomputer adopts the AT89C2051 single-chip microcomputer, the photosensitive sensor adopts the MOC6002 sensor, the ultrasonic radar range finder adopts the BW17-texIII range finder, and the speed sensor adopts the JK08/NS43NCT1 sensor.

When driving at night, the photosensitive sensor detects the lighting conditions of the driving road and transmits the information to the microcontroller. If the single-chip microcomputer judges that the road lighting condition is good, then control the beam splitter to turn on the low beam, otherwise turn on the high beam.

When meeting cars at night, the photosensitive sensor can capture the headlight signal in the direction of the coming car, and judge whether there is a car coming in the opposite direction through the single-chip microcomputer. At this time, the ultrasonic ranging radar rangefinder can measure the distance between the car and the coming car. The speed sensor installed on the car can know the speed information of the car, and the single-chip microcomputer processes the data information from the photosensitive sensor, the ultrasonic radar rangefinder and the speed sensor, and then controls the beam splitter to turn on the high beam or the low beam. The control strategy is to switch from high beam to low beam when the speed of the vehicle is greater than 60km/h and 200m away from the vehicle in front; to switch to low beam when the speed of the vehicle is less than 60km/h and 150m away from the vehicle in front. Then switch back to high beam.

The electronic components used in the utility model are all known products, and those skilled in the art can know the specific connection mode of the electronic components according to the technical solution of the utility model.

The embodiments of the present utility model have been described above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned specific embodiments, and the above-mentioned specific embodiments are only illustrative, instructive, and not restrictive. The equivalent transformations made on the basis of the technical solution of the present application all fall within the protection scope of the present utility model.

Claims (5)

1. night travel distance-light automatic switching control equipment, it is characterized in that, comprise country beam, passing light, spectroscope, micro controller system, photosensor, ultrasonic radar range finder and speed sensor, wherein, photosensor, ultrasonic radar range finder and speed sensor connect respectively micro controller system, the mouth of micro controller system connects spectroscope, and the exit slit of spectroscope connects respectively country beam and passing light.

2. night travel distance-light automatic switching control equipment as claimed in claim 1, is characterized in that, described micro controller system adopts the AT89C2051 micro controller system.

3. night travel distance-light automatic switching control equipment as claimed in claim 1, is characterized in that, described photosensor adopts the MOC6002 sensor.

4. night travel distance-light automatic switching control equipment as claimed in claim 1, is characterized in that, described ultrasonic radar range finder adopts the BW17-texIII apomecometer.

5. night travel distance-light automatic switching control equipment as claimed in claim 1, is characterized in that, described speed sensor adopts the JK08/NS43NCT1 sensor.

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