参赛编号：E甲1121简易数控充电电源（E题）参赛学生：李海洋刘婧瑀马力参赛学校：中国海洋大学指导教师：程凯2008-9-15目录摘要...............................................................................1一、系统设计........................................................................11设计思路.......................................................................12方案论证与比较.................................................................22.1电路组成.................................................................22.2模数转换.................................................................32.3充电电源的恒流、恒压电路.................................................4二、硬件设计........................................................................51控制器单元.....................................................................52充电电源单元...................................................................53差分运算放大电压单元...........................................................54模数转换单元...................................................................65温度采集单元...................................................................76显示单元.......................................................................7三、软件设计........................................................................71设计思路.......................................................................71.1主程序...................................................................71.2温度采集.................................................................81.3充电电源程序.............................................................91.4A/D转换程序.............................................................91.5显示程序................................................................101.6中断服务程序............................................................11四、系统测试.......................................................................111测试仪器......................................................................112测试方法......................................................................113测试结果......................................................................113.1输出恒压................................................................113.2恒流输出................................................................12五、结束语.........................................................................14参考文献............................................................................14附录................................................................................15附录1元器件明细表...........................................................................................................................15附录2程序清单...................................................................................................................................15附录3印制板图...................................................................................................................................20附录4系统使用说明...........................................................................................................................21简易数控充电电源（E题）摘要本充电电源将LM317集成的恒流源与TL431集成的恒压源相串联，实现稳压和恒流充电。本电路设计简单，易于实现，采用AD626进...
