基于泄漏电缆的周界入侵探测系统设计

针对传统周界入侵探测系统存在的定位精度不高及误报漏报率高等问题,设计了一种基于泄漏电缆的新型周界入侵探测系统.根据入侵探测系统的功能需求,将两根经特殊设计的泄漏电缆埋地安装,然后利用现场可编程门阵列实现泄漏电缆中信号的发送和处理,其泄漏的电磁场形成一堵无形的防护区,最后通过自行开发的测试软件实现泄漏电缆远程自动探测流程.实验结果表明,该基于泄漏电缆的入侵探测系统对入侵的定位精度实测达到了5m,具有全隐藏安装、准确定位入侵位置及误报漏报率低等优点.

Design of a Perimeter Intrusion Detection System Based on Leaky Cable

For the problem of low positioning accuracy,high false and missed alarm rate of traditional perimeter intrusion detection systems,a new type of perimeter intrusion detection system was designed based on leaky coaxial cables.According to the functional requirements of the intrusion detection system,two specially designed leaky cables were buried underground,forming an invisible protective zone by its electromagnetic field,while the signals propagating in the leaky cables were sent and processed by a field-programmable gate array.Finally,a self-developed test software was applied to achieve the remote automatic detection process.The experimental results show that the intrusion detection system based on leaky cables has achieved the positioning accuracy of 5 m.In addition,it has the advantages of fully hidden installation,accurate intrusion locating capability and low false and missed alarm rate.