Automatic luminosity-changing device for headlights of automotive vehicle

Abstract

The invention relates to an automatic luminosity-changing device for headlights of an automotive vehicle, which consists of a voltage-stabilizing circuit 1, a singlechip circuit 2 (which comprises a built-in memory and an analog-digital (AD) converter), a signal transmitting and receiving circuit 3, a detection circuit 4, a safety prompting circuit 5, a luminosity-changing executive circuit 6 and a progressive luminosity-changing control circuit 7. When in use, the automatic luminosity-changing device is arranged in an engine hood and a driving cab of the automotive vehicle, and is connected with an ignition switch 11, a luminosity-changing switch 12, a dipped headlight 8 and a far-reaching headlight 9 which are arranged originally. When the two automotive vehicles with the device meet at night, as long as the dipped headlight of one automotive vehicle is opened, the other automotive vehicle which opens the far-reaching headlight against rules is forced to be changed into the dipped headlight automatically; after the dipped headlight is changed, and if the automotive vehicle needs to give an overtaking signal or an emergent prompting signal, the far-reaching headlight still can be used intermittently; and after meeting is finished, the far-reaching headlight is restored automatically. Therefore, dazzle glare caused by the far-reaching headlight during the meeting can be prevented, accidents can be prevented, and the safety driving can be ensured. The automatic luminosity-changing device is convenient to install and reliable in operation, and does not influence other functions of the automotive 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 illumination functions of 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...

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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