Multifunctional manual/automatic complementary type headlamp dimmer

Abstract

The invention discloses a manual and automatic complementary vehicle headlamp dimmer which performs integrated control according to environment visual range, close light distance, parking visual range, braking, overtaking and a plurality of other information. The invention mainly consists of a microprocessor and peripheral elements, as well as the circuits such as driving control and power load, control and power source, former vehicle information derivation, broken wire failure diagnosis, controlling component and condition indication, etc. The invention has two light changing modes of a manual-automatic mode and a full-manual mode, wherein the full-manual mode has the same function as the prior manual dimmer; the manual-automatic mode not only accords with the light changing rules during deceleration in actual automobile meeting, turning and bad road conditions, etc., and during acceleration in actual overtaking, straight traveling or good road conditions, etc.; but also automatically protects the automobile meeting safety under manual far light in low speed traveling and the overtaking safety under manual close light in high-speed car-following traveling. The manual and automatic complementary vehicle headlamp dimmer also has additional functions such as optical control light turning on/off, flameout delay light turning off, emergency braking far light, steering auxiliary lighting, failure diagnosis processing, self reset combined switch, and so on.

Description

Technical field [0001] The invention relates to a multifunctional control device for the exterior light of a motor vehicle, especially a manual and automatic complementary headlight for comprehensive control based on various information such as environmental sight distance, low light distance, parking sight distance, braking and overtaking. dimmer. Background technique [0002] According to the "Regulations on the Implementation of the Road Traffic Safety Law of the People's Republic of China" on the use of motor vehicle headlights: 1) When a motor vehicle overtakes another vehicle, it should turn on the left turn signal in advance, change the use of far and low beam lights or honk the horn; 2) at night Passing vehicles should switch to low beam lights when they are 150 meters away from vehicles coming from the opposite direction, and low beam lights should be used when meeting non-motor vehicles on narrow roads or bridges; 3) Motor vehicles have no street lights at night, p...

AI Technical Summary

Problems solved by technology

1) The photosensitive control type dimmer detects the incoming vehicle light and road illumination through the photosensitive element, and automatically dims the light when it reaches a certain level of illumination, so as to realize the automatic switching of the high beam to the low beam when two motor vehicles meet at night or when the road is bright. , its disadvantages are: automatic dimming cannot be achieved when meeting with non-motor vehicles (or pedestrians) with weaker lights (or no lights), the sensitivity of the photosensitive lens is reduced after the surface of the photosensitive lens is polluted, and it is vulnerable to other external light 2) The infrared transceiver type dimmer can automatically switch the high beam to the low beam when meeting cars at night by receiving the infrared meeting signal emitted by the car ahead. The light dimmer needs to be assembled, and it is also not suitable for automatic light dimming when motor vehicles and non-motor vehicles meet; 3) The liquid crystal switch type anti-glare device controls the switching frequency and phase difference of liquid crystal glasses (or light barriers), so that External direct light and pulse glare light reduction, without affecting the pulse xenon lamp lighting of the same frequency and phase of the car, its disadvantages are: it will cause glare to oncoming cars and pedestrians who are not equipped with this device, and must also rely on photosensitive elements for photometry; 4 ) The steering control type dimmer is linked with the turn signal lamp to realize the automatic switching of the high beam to the low beam when turning at night. Auto-dimming function for meeting vehicles; 5) The vehicle speed control type dimmer compares the vehicle speed signal measured by the vehicle speed sensor with its threshold value, and automatically realizes high beam at high speed and low beam at low speed. The disadvantages are: The vehicle speed threshold changes with the driving speed and road conditions, and it is difficult to manually select it accurately at any time, and there is no automatic protection function for the safety of meeting vehicles under the manual high beam state when driving at low speeds and the overtaking safety under the manual low beam state when driving at high speeds ; 6) Although the functions of automatic dimmers in other combined forms have increased, there are more or less the above-mentioned defects, and they are poor in practicability, low in reliability, and inconvenient for refitting and popularization

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