红外遥控报警器模拟电路课程设计报告.doc.doc

课程设计说明书 课程设计名称： 模拟电路课程设计 课程设计题目： 红外遥控报警器 学 院 名 称： 南昌航空大学信息工程学院 专业： 通信工程 班级： xxxxx班 学号： xxxxxx 姓名： xxxxx 评分： 教师： 2015 年 4 月 28 日 摘要 本报告讲述了利用NE555p芯片设计制作红外遥控报警器.要求当有人遮挡红外光时发出报警信号，无人遮挡红外光时报警器不工作，即不发声。根据要求，红外报警器应有两部分组成，即红外发射电路和红外接收电路。发射电路由自激多谐振荡器、功率放大器、红外发光二极管组成。自激多谐振荡器经稳压电源产生30Khz的方波脉冲，此脉冲为红外光的调制脉冲，调制脉冲经功率放大后控制红外发光二极管发射红外脉冲。接收电路由红外光敏晶体二极管、放大、报警电路组成。把红外脉冲信号转换为电信号，即解调出调制脉冲，然后将此信号放大，控制报警电路器不工作。当红外脉冲被人遮挡时，则报警器工作发出报警声,从而达到警报功能。 关键字:警报、功率放大、多谐振荡、调制、遮挡 目录 第一章 电路设计方案与选择··············································5 第二章 系统组成 ·······················································6 2.1 红外遥控报警器发射电路··········································6 2.2 红外遥控报警器接收电路··········································6 第三章 系统原理及电路设计··············································7 3.1多谐振荡电路····················································7 3.11多谐振荡器概述···············································7 3.12用555定时器构成的多谐振荡器·································7 3.13工作原理: ··················································7 3.2红外发射电路····················································8 3.21 工作原理·····················································8 3.22 红外发射部分设计电路图·······································8 3.3 红外接收电路····················································8 3.31工作原理····················································8 3.32 红外接收部分设计电路图······································9 第四章 4.1红外发射电路···················································10 4.2 红外接收电路···················································10 4.3元器件清单·····················································10 第五章 系统调试和结果·················································11 5.1软件调试与仿真·················································11 5.2实物制作·······················································12 5.3实测波形 ····················································· 13 第六章 结论························································