设计说明书 红外声控报警系统的设计.pdfVIP

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 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。 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 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 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 ； ； AT89C52 I Abstract The 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 II 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. III 摘 要I Abstract II 引 言1 1 设计任务2 2 方案论证与比较2 2 系统硬件电路设计3 2.1 复位电路3 2.2 晶振电路3 2.3 液晶显示电路设计4 1 基本操作时