实现太阳能的准确跟踪，实现了一种新型算法，误差范围控制在1 ， -realize accurate tracking of solar energy, a new algorithm to achieve a range of error within 1 ,

使用52单片机实现串口通信，串口工作方式 SM0 = 0 SM1 = 1 TMOD = 0x21 -52 MCU serial communication, serial work SM0 = 0 SM1 = 1 TMOD = 0x21

智能电表 2013版宣贯标准 645-2007通讯规约 7816协议，SM1加密算法，支持多种计量芯片-Publicizing smart meter version 2013 standard communication protocol 645-2007 7816 agreement, SM1 encryption algorithm supports multiple metering chip