Automotive rear indoor lamp control module and control method
A control module and control method technology, which is applied in the direction of lamp circuit layout, lighting devices, light sources, etc., can solve problems such as high cost, hardware logic confusion, and long software approval cycle, and achieve the effect of shortening the approval cycle
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[0025] Such as figure 1 As shown, a vehicle rear interior light control module based on the Volkswagen MQB platform of the present invention includes a power supply voltage stabilization filter module, a rear dome light left and right switch debounce circuit, a switch level signal conversion into a trigger signal module, and a two-way trigger MC14013 , A dual-channel drive bulb chip for dome light drive and a rear dome light status indicator.
[0026] The PWM (Pulse Width Modulation) input signal is a 200HZ square wave with a duty cycle of 0-100% output by the body controller when the door switch is opened. Since no processor solution is used, there are two solutions. One drives the load directly, and the other uses the set and reset states of a flip-flop to fade in and out. Due to the logic state switching, there will be a common problem of the MQB platform when directly driving the load. The dome lamp control module of the present invention adopts a trigger to realize the ...
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