科目：综合控制系统题目：温度控制系统课程设计姓名：LC学号：系别：班级：完成时间：华南理工大学广州学院电子信息工程学院1目录前言............................................................................................................1第一章系统总体方案...............................................................................2第二章系统硬件设计...............................................................................32.1PLC选择............................................................................................................32.1.1FX2N-48MR-001PLC..................................................................................32.1.2FX2N-2AD特殊功能模块...........................................................................42.1.3FX2N-2DA特殊功能模块42.2硬件电路设计....................................................................................................52.2.1温度值给定电路..........................................................................................62.2.2温度检测电路..............................................................................................92.2.3过零检测电路............................................................................................102.2.4晶闸管电功率控制电路............................................................................112.2.5脉冲输出通道............................................................................................132.2.6报警指示电路............................................................................................132.2.7复位电路....................................................................................................14第三章系统软件设计.............................................................................143.1编程与通信软件的使用..................................................................................143.2程序设计..........................................................................................................163.3系统程序流程图..............................................................................................163.4控制系统控制程序的开发..............................................................................173.4.1温度设计....................................................................................................173.4.2A/D转换功能模块....................................................................................183.4.3标度变换程序............................................................................................193.4.4恒温控制程序（PID)设计........................................................................193.4.5数字触发器程序设计................................................................................223.4.6显示程序....................................................................................................253.4.7恒温指示程序............................................................................................253.4.8报警程序....................................................................................................25第四章总结与展望.................................................................................264.1总结.................................................................................................................264.2展望................
