Infrared Alarm Monitor System for Communication Wells Based on PC
基于PC的通信井红外报警监控系统

An infrared alarm monitor system for communication wells is designed. The system is consisted of diffuse infrared sensors, integrated circuits with digital coding and decoding functions, a special power supply and a LED digital display etc.. When one or some well covers are opened or removed, the infrared receiving module of the monitor system can not receive any diffuse infrared signals. At this moment, the monitor module outputs alarm signal pulses. Then, each corresponding indicator flickers and displays the number of the wells. Because the digital coding technique is incorporated, multiple places can be monitored via one master PC monitor. The whole system adopts a modular structure and has the features of easy light alignment, stable operation and free debug etc.. It has been used in an airport communication network.