Automatic dimming device of front headlamp for motor vehicle

Abstract

An automatic dimming device of a front headlamp for a motor vehicle is composed by connecting a voltage regulator circuit 1, a singlechip circuit 2, a signal transmitting and receiving circuit 3, a storage circuit 4, a dimming execution circuit 5, a gradual dimming control circuit 6, a transmission prompting circuit 7, a dipped headlight damage detection circuit 8 and a safety prompting circuit 9. The automatic dimming device is mounted in a motor vehicle engine lid and a cab during use, and is connected with an original ignition switch 13, a dimming switch14, a dipped headlight 11 and a high beam 12. When two motor vehicles equiped with the device meet, if only one party turns on the dipped headlight, the other party which turns on the high beam illicitly is forced to be automatically changed to turn on the dipped headlight. After the other party is changed to open the dipped headlight, if the motor vehicle needs to turn on an overtaking lamp or an instancy prompting signal, the motor vehicle can use the high beam intermittently. After the meeting, the high beam is automatically resumed. Thereby glary high beam is avoided during meeting, generation of accidents is prevented, safe driving is ensured. The device is convenient to mount, reliable to operate, has no effct on other functions of the motor vehicle.

Description

technical field [0001] The invention relates to a circuit used in an optical lighting device of a motor vehicle, in particular to an automatic light-dimming device for a headlight of a motor vehicle. Background technique [0002] Motor vehicle headlights have two lighting functions: high beam and low beam. When a motor vehicle is running normally at night, it is generally illuminated with high beams. When two vehicles meet, in order to prevent the high beams from being dazzled and avoid traffic safety accidents arising therefrom, the Ministry of Communications has stipulated on motor vehicle safety: motor vehicles at night When meeting vehicles, at a distance of 150M, both sides of the meeting vehicle should actively change the headlights to low beam lighting. Because the change of the far and low beams of the motor vehicle is manually controlled by the driver, due to the driver's negligence and low quality , Malicious opening and other reasons, at present, the safety of mo...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of traffic accidents caused by turning on the high beam lights for a long time when the existing motor vehicles meet at night, the purpose of the present invention is to provide a front of the motor vehicle that forces the motor vehicles to automatically change the high beam lights to the low beam lights. Headlight automatic dimming device, so as to ensure safe driving when meeting cars at night

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