Multifunctional hand / automatic complementary type front shining lamp dimmer

Abstract

The invention relates to a manual and automatic complementary vehicle headlight dimmer which performs comprehensive control according to various information such as foreground sight distance, dipped beam illumination distance, stopping sight distance, braking and overtaking, has two dimming modes of a semi-automatic mode and a fully manual mode, can automatically correct manually dimming operation according to the braking and overtaking information and make the automatically and manually dimming modes achieve functional complementation. The dimmer also has additional functions such as manual / automatic complementary switch light, emergency deceleration automatic high beam plus back foglight, downfall automatic small plus front foglight, leaving time delay lighting, changing direction curve lighting, open circuit fault prompt, light emergency backup and self-resetting switchgroup. The dimmer mainly comprises a microprocessor and external element circuit, a drive control and power load circuit, a control and power source circuit, a prior automobile information derived circuit, an open circuit fault diagnosis circuit, an operating component and state indicating circuit and so on, and can be suitable for intelligent control for various external automobile lights, which is favorable for improving traffic safety and vehicle controllability.

Description

Technical field [0001] The invention relates to a multifunctional intelligent control device for the exterior light of a motor vehicle, in particular to a manual and automatic complementary front light that is comprehensively controlled according to various information such as foreground sight distance, low light distance, parking sight distance, braking and overtaking. Light dimmer. Background technique [0002] According to the regulations on the use of motor vehicle headlights in the "National Road Traffic Safety Law": 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; Use low-beam headlights instead of 150m away from oncoming vehicles in the opposite direction, and use low-beam headlights when passing non-motorized vehicles on narrow roads or bridges; When driving in low-visibility conditions such as snow, dust, and hail, headlights, position marker lights and...

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 realized when meeting with non-motor vehicles (or pedestrians) with weaker lights (or no lights), and it is easily interfered by other external lights to cause misoperation; 2) Infrared The transceiver type light 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 in front. It is not suitable for automatic dimming when motor vehicles and non-motor vehicles (or pedestrians) meet; 3) The liquid crystal switch type anti-glare device controls the switching frequency and phase difference of liquid crystal glasses (or baffles), so that the 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: the visibility of the road environment light is reduced, and it will cause glare to the cars and pedestrians who are not equipped with this device, and it may also cause glare after the installation Affects the driving vision; 4) The steering control dimmer is linked with the turn signal lamp to automatically switch the high beam to the low beam when turning at night. 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 , its disadvantages are: the vehicle speed threshold changes with the foreground sight distance and road conditions, it is difficult to manually select accurately in advance, and it is very important for the safety of meeting cars under the manual high beam state when driving at low speed and the manual low beam state when driving at high speed. There is no automatic protection function for overtaking safety; 6) Although the functions of other combined automatic dimmers have been increased, they also have the above-mentioned defects more or less, and have poor practicability, low reliability, and are inconvenient to refit and promote

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