本文构建一种基于微处理器的中、小功率光伏控制系统。从硬件、软件方面完善系统对蓄电池充放电及其负载的管理和保护。系统采用了LCD、键盘和异步串行通信，加强了系统的实时监控性和远程管理，方便了对单个系统或多个互联系统的维护和监管。本系统已运用于多个太阳能光伏产品系列，并取得满意的效果。关键词： MCU 太阳能 光伏系统 异步串行通讯Abstract The article provides a medium and small power photovoltaic control system based on MCU. The system perfects the management and protection for the charge and discharge of storage battery also for the load and solar power supply. The system adopts the LCD, keyboard and asynchronous serial communication to enhance the system supervision and remote management and convenience to maintain and scrutinize one unit or several systems. This system has already been made use of in several photovoltaic product series and obtains the satisfied result.Keywords：MCU, solar energy, Photovoltaic System, asynchronous serial communication
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