Four-channel electronic control system for controlling automobile lamp lighting

Abstract

The invention provides a four-channel electronic control system for controlling automobile lamp lighting. The four-channel electronic control system comprises a power conversion module, a microcontroller module, a switching module and a 5V voltage conversion module, wherein the power conversion module comprises DC-to-DC boost and buck modules; the boost module boosts battery voltage to stable voltage higher than the voltage of all lamp strings as input voltage of the buck module; the buck module converts output voltage of the boost module into the voltage of LED lamp strings and has a constant-current output function; different voltage of the lamp strings correspond to the same output current through adjusting the internal working frequency; and the microcontroller module has the functionsof setting working parameters of a main power control chip, responding to a lighting instruction given by an automobile body control module at a finished automobile end to control on and off of various lamp strings and monitoring components of the electronic control system and the temperature of an LED on a lamp panel. According to the four-channel electronic control system, four paths of lamp strings can be driven through two paths of output of the buck module, thereby reducing the cost and improving the integration level.

Description

technical field [0001] The invention relates to the field of automobile lamp lighting, in particular to a four-channel electronic control system for controlling the lamp lighting. Background technique [0002] Lighting or lamp units of motor vehicles are usually capable of one or more lighting functions, e.g. for headlamps they have full or partial high beam, low beam, daytime running Lamp (DRL), position lamp (POS) or turn signal indicator (TI), using a multi-output ECU (electronic control system) as a drive circuit, responds to user input through software or hardware, and turns on or off the corresponding channel. LED (Light Emitting Diode) light source. [0003] The known method in the prior art is to use a separate drive circuit output for each of the multiple LED light sources of the lighting device. This method requires a complex design of the drive circuit, takes up space, and is costly, and corresponds to the needs of each output. There is a separate control signal...

AI Technical Summary

Problems solved by technology

This structure makes it possible to independently turn on or off one or more of the multiple functions by acting on the switch. However, since this method requires the output voltage of the driving circuit and the The current responds quickly, so this method is also not easy to implement

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