本系统采用单片机作为控制中心，配有移动通信模块、警情采集电路、看门狗电路、声光报警电路和电源模块。当警情采集电路采集到警情信号时，单片机立即接通报警驱动电路实现声光报警，与此同时单片机接通移动通信模块，通过无线调制解调器接入GSM向外界报警，从而完成自动报警。-The system uses microcontroller as a control center, equipped with a mobile communication module, alarm acquisition circuit, the watchdog circuit, sound and light alarm circuit and power supply module. Acquisition circuit of the police intelligence police intelligence collected signal, the microcontroller immediately connected to the alarm driver circuit to achieve the audible and visual alarm at the same time microcontroller connected to the mobile communication module to the outside world via wireless modem access GSM alarm, thus completing the automatic alarm.