Infrared anti-theft wireless alarm system

The invention discloses an infrared anti-theft wireless alarm system. The system is composed of a single-chip microcomputer minimum system, a key control circuit, an LED indicator lamp and alarm circuit and an infrared sensor. The system is set to be in a defense state, when a person approaches, the pyroelectric infrared sensor converts an induced infrared signal into an electric signal, and the electric signal is processed by the single-chip microcomputer to drive an alarm. The system is reliable in performance, easy to manufacture, high in sensitivity, low in false alarm rate and concealed in installation. 本发明公开了一种红外防盗无线报警系统，其系统是由单片机最小系统、按键控制电路、LED指示灯与报警电路、红外感应组成。该系统被设置为布防状态，当有人员靠近时，热释电红外传感器将感应到的红外信号变换成电信号，经过单片机处理，驱动报警。该系统性能可靠、制作简单、灵敏度高、误报率低，安装隐蔽。