处理器采用STC89C52单片机，通过IO口连接一个热释电红外传感器，探测进入区域的人体，以及三路LED灯用于发出灯光警报，同时通过一路IO连接蜂鸣器，响铃报警。接三路按钮，分别实现设防、取消报警、手动报警的功能。(The processor uses STC89C52 microcontroller, pyroelectric infrared sensor through the IO port to connect a heat detection into the area of the human body, and the three LED lights for the light alarm, and a IO connection through the buzzer alarm bell. Three button, respectively, to achieve security, cancel the alarm, manual alarm function.)