中文摘要：

利用单片机结合PCB电路设计了一种外后视镜智能控制模块。该模块采用原车载12V电源供电，不依赖ECU而独立工作；该模块包含降压电路及电机控制电路，可调节外后视镜的翻转角度；通过软件编程可实现倒车时外后视镜同步翻转、定位及复位功能。以模块化的PCB板载芯片与器件实现了样品试制，经仿真及装车测试验证，该模块可良好地实现设计功能，且与车辆电气系统实现无干扰匹配。

英文摘要：

An intelligent control module for exterior mirror is designed using MCU and PCB circuit. This module is powered by 12V vehicle-mounted power supplies, and is independent from electronic control unit （ECU） of the vehicles. It consists of buck converter and motor controlling circuit. The adjustable turning angle of the exterior mirror can be realized by this module. After programmed, the functions of exterior mirror synchronous turning when reversing, angle location and reset can be realized. At last, the product is put to pilot production based on a modular PCB on board chip and electronic devices. This module is capable of performing the designed functions, and can match the original electrical system of the car with no interference, which are testified by experiments.