基于AVR型单片机智能双电源开关的研制

为了提高重要负荷的供电连续性，一般采用两路电源热备用方式供电。两路电源的投切通过一套专用的控制器进行，其功能是实时监测两路电源的状态，保证负荷电源的可靠性。本文就控制器的原理与实现方法做出了分析，对双电源供电系统切换装置进行研究并加以改进，采用高性能单片机ATmega16对电源状况进行实时的判断，并在常用电源出现故障时自动将电路切换到备用电源，或使用发电机组发电保证对用户的供电。

Development of Automatic Switching Device Based on AVR Singlechip for Duplicate Power

Duplicate power supply is necessary to enhance the continuity of the load. It is important to apply a special controller to switch between the duplicated power supply. The function of the controller is to supervise the electrical power supply in real time and assure the reliability of the electrical power supply. This paper thus analyses the principle and the scheme of the controller, then study and improve the automatic switching device for the intelligent duplicate power. The paper suggests that a high-performance single-chip ATmega16 be used to detect and judge the state of electrical power supply in real time, and to switch to the standby power source automatically or to control the generator to supply the power when any fault occurs in the normal power source.