抗干扰激光入侵探测设备研究  

Research on Anti-jamming Laser Intrusion Detecting Equipment

作　　者：成跃[1] 李祥州[2] 张志利[2] 杨必武[1] 

机构地区：[1]第二炮兵装备研究院,北京100085 [2]第二炮兵工程学院,陕西西安710025

出　　处：《激光与红外》2008年第12期1204-1206,共3页Laser & Infrared

摘　　要：激光入侵探测设备具有探测距离远等独特优势,但也存在易受杂光照射或小物体干扰而产生误报的不足。本文采用芯片NE555和ADP3334组合使用对808nm半导体激光器进行调制脉冲稳压供电,在激光器发射端产生特定频率稳定脉冲激光,接收端予以相应滤波处理,探测器具有抗太阳光、灯光等杂光干扰的能力。接收端采用放大器OP295进行信号限幅放大,探测器在米级到百米级探测距离内无需调节均可正常工作。触发报警的时间下限由单片机进行控制,能降低小物体干扰产生的误报。The intrusion detecting equipment using laser has special advantages such as far detecting distance, but also exist shortages that easy to disturb by interfere light or small objects to cause false alarm. This article adopt chip NE555 and ADP3334 working together to offer modulate steady pulse of current to 808nm semiconductor laser diode, produce special frequency high stabilization laser in transmit port, the take-over port filter the waves of corresponding frequencies, detector have anti-jamming ability to interferential light such as sun ray or lamplight. Take-over port adopt amplifier OP295 to implement limit extent amplify, detectors can accurately working without adjustment in detect distance change from several meter to hundreds meter. SCM is used to control lower limit timer which relate to touch off alarm,and effectively decrease incorrect alarms from small objects＇ disturb.

关 键 词：激光入侵探测 抗干扰 稳频 滤波接收 

分 类 号：TH744[机械工程—光学工程]