(基于固定电话线的远程控制与防盗报警器的设计与制作.doc

基于固定电话线的远程控制与防盗报警器的设计与制作 刘方威 （陕西理工学院 物理与电信工程学院 通信工程专业，2009级1班，陕西 汉中 723003） 指导教师：龙光利 [摘 要] 为了利用现有的电话线路对家庭中设备和电器进行远程控制，采用单片机和DTMF解码芯片，设计并制作了一种基于固定电话线的远程控制器。控制器包含硬件和软件两部分，硬件电路由MT8880电话电路、摘机挂机电路、响铃检测电路、红外检测电路、触发开关电路、液晶显示电路、I2C存储电路、继电器输出控制电路、键盘控制电等电路组成；软件由主程序、振铃检测计数程序、DTMF解码处理程序、键盘扫描程序、语音控制程序、EEPROM读写程序、LCD显示等子程序组成。软件用C语言编程，利用Keil软件编译，通过后将生成的HEX文件下载到单片机STC89C52上，Proteus硬件仿真通过后，用Altium Designer设计PCB板，手工制作PCB板，将单片机和其它相关元器件焊接在PCB板上，和固话连接，上电，当家中发生警情时, 此时家中设定的无线模块或者其他传感器模块会发出异常信号给单片机, 单片机接受到信号后立即发出现场声光报警信号来威慑侵入者, 同时将单片机自动拨打预先存储在存储芯片中的电话号码给主人或者小区物业报警, 以便及时采取防盗措施避免财产损失。通过拨打连接的固定电话的号码，可控制家用电器开启和关闭，液晶显示有关号码，通过蜂鸣器报警。 [关键词] 电话线；控制器；防盗报警；单片机；双音多频；红外感应 Design and production of remote controller based on the fixed telephone line Liu Fangwei (Grade09,Class1,Major of Communication Engineering，School of Physics and telecommunication Engineering , Shaanxi University of Technology, Hanzhong 723003, Shaanxi) Tutor: Long Guangli Abstract:In order to control devices and appliances which based the line of fixed telephone,a remote controller based on the fixed telephone line was designed and production by using MCU and DTMF decoder.The implementation of the controller includes hardware design and software design,hardware was composed of MCU minimum system,ringing circuit,simulation of off-hook and on-hook,drive circuit of appliances,decoder of DTMF, LCD,keyboard and EEPROM Cell;software was composed of main program,program which could count the number of ringing,DTMF decode program,keyboard-scan program,voice program,EEPROM reading and writing program,display program.The software was based on programmed with C language,using Keil C51 for developing program,compiled HEX file and downloaded to the MCU AT89S52,circuit simulation by Proteus.The board of PCB was designed by the sofware which named Altium Designer and was welded manually with other electronic components,which will be used.After connecting with the line of fixed telephone