Ambient light control circuit based on microcontroller on automobile BCM

Abstract

The invention discloses an ambient light control circuit based on a microcontroller on an automobile BCM. The circuit comprises a micro controller on the BCM, a CAN transceiver on the BCM, a vehicle DVD and an ambient light driving unit, wherein the ambient light driving unit comprises an ambient light enablement circuit and an ambient light adjusting circuit, the vehicle DVD is connected with themicro controller through the CAN transceiver and is further used for transmitting a control instruction to the micro controller, and an output end of the micro controller is connected with the ambient light enablement circuit and the ambient light adjusting circuit for controlling ambient lights. The circuit is advantaged in that when the vehicle power supply gear is IG1 and valid, the microcontroller on the BCM displays commands according to an ambient light switch signal and colors issued by the DVD in a can message, secondly, the ambient lights of the external fixture are then enabled by an enable signal, color change of the ambient lights is achieved through dimming the R, G and B primary colors, a problem of no controller in the fixture is solved, additional configuration of a control module is not needed, self vehicle devices are greatly utilized, and the number of body parts is reduced.

Description

Technical field [0001] The invention belongs to the technical field of automobile lamp control, and in particular relates to an atmosphere lamp control circuit based on a microcontroller on an automobile BCM and a control method thereof. Background technique [0002] With the improvement of people's living standards, consumers have higher and higher requirements for the comfort of car driving and riding. At present, many car manufacturers have installed atmosphere lights inside the car to improve the lighting environment in the car and increase driving comfort. At present, many atmosphere lamp suppliers selected by OEMs do not integrate the atmosphere lamp controller into the lamp, so an external control module is needed to control the atmosphere lamp, which results in a large variety of body parts and inconvenient management for suppliers And other issues. Summary of the invention [0003] The present invention solves the technical problem that an additional control module is n...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problem that an additional control module is required for the control of the ambient light, thereby providing an ambient light control circuit based on a microcontroller on the BCM of an automobile and a control method thereof.

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