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论文编号____________

鹤 壁 职 业 技 术 学 院

毕业论文

温度报警器控制电路的设计

学号： 1203321021 姓名： 魏 志 文 学院： 机电工程学院 专业： 机 电 一 体 化 导师: 蔡 辉 剑 时间： 2017 年 4 月 15 日

目 录

摘要 ······························· 1 前言 ······························· 2 课程设计任务书 ·························· 3 一、设计方案及思路 ························ 5

（一）设计框图 ························ 5 （二）所需仪器设备 ······················ 5 （三）设计任务 ························ 5 （四）设计方案 ························ 5 （五）单元电路设计 ······················ 5 二、电路的组成 ·························· 7 （一）多输出电源电路 ····················· 9

（二）放大电路 ························ 10 （三）窗口比较器电路 ····················· 11 （四）单频蜂鸣器电路 ····················· 12 （五）双频蜂鸣器电路 ····················· 13 三、各个模块 ··························· 14

（一）电源电路 ························ 14 （二）放大电路和窗口比较器电路 ················ 14 （三）单频蜂鸣器报警电路 ··················· 14 （四）双频蜂鸣器报警电路 ··················· 14 四、综合电路 ··························· 15

（一）实验数据 ························ 15 （二）元器件清单 ······················· 16 五、实验装调 ··························· 17

（一）装调步骤与方法 ····················· 17 （二）出现故障及处理 ····················· 17

六、心得与体会 ·························· 19

参考文献 ····························· 21 附录 ······························· 22 致谢 ······························· 25