摘要 这个红外声控报警系统是由中央控制器、红外传感器、声控传感器、报警器及键盘部分组成。控制器采用单片机 AT89C52,红外传感部分采用红外发射接收一体化的光电传感器 TCRT5000，声控传感部分采用驻极体话筒，扬声器和发光二极管作为报警设备。单片机通过红外传感部分和声控传感部分的传来的信号的变化来判断是否有外来者，如有则通过扬声器或者发给二极管来报警；红外传感器是通过发射管发射红外线到接收管，两个元件之间通过红外线进行连接当有物体挡在中间时，便把电平的变化传给单片机；同理，声控传感器是把声音信号转换为电信号然后传送给单片机；键盘是用来设置报警触发的条件。关键词：单片机 ； 汇编语言 ；红外传感器 ；声控传感器 ；AT89C52AbstractThe infrared voice alarm system is composed of a central controller, infrared sensors, voice-activated sensors, alarm devices and keyboard parts. Controller using microcontroller AT89C52, infrared sensing part of the integration of infrared transmitting and receiving electro-optical sensors TCRT5000, voice-activated sensor part of the use of electret microphone, speakers and light-emitting diodes as the alarm equipment. Microcontroller through the infrared sensor part and the voice-activated sensor part of the coming changes in the signal to determine whether there are outsiders, if sent through the speakers or the diode to the police; infrared sensors, infrared emission through the launch tube to the receiving tube, two between elements of a connecting via infrared, when there are objects stand in the middle, they then pass on the changes in level microcontroller; Similarly, voice-activated sensor is converted into electrical signals into acoustic signals and then transmitted to the microcontroller; keyboard is used to set the alarm trigger conditions. Keywords:microcontroller; assembly language;infrared sensor;voice-activated sensor; AT89C52 目录摘 要............................................
