摘要
周界安全防范技术能够对重要能源设施进行保护,避免出现盗窃和恶意破坏的行为。介绍了一种基于光纤光栅振动传感技术的周界入侵报警系统,它通过布设在防护网上的振动光缆感知外界扰动信息,根据不同激励行为下的时变波长信号的典型特征,采用时域信号包络分析技术,实现了对多种入侵行为的模式识别。通过多个周界安防工程案例表明该入侵报警系统具有入侵模式识别能力和较低的误报率,对环境中的风雨等气象因素不敏感。
Perimeter security protection technology could protect important energy facilities,avoid theft and malicious destruction behaviors.This article introduces a perimeter intrusion system based on Fiber Bragg Grating(FBG) sensor.The vibration information can be detected by sensing cable,which is fixed to the fence.The classification and feature analysis of time domain signal envelopment are carried out to realize the pattern recognition of different invasion behaviors according to the typical characteristics of time-varying wavelength signal in different incentive behaviors.Multiple project cases prove that the FBG intrusion detection system has pattern recognition abilities and very low false positive rates and it's not sensitive to meteorological factors in the environment such as wind and rain.
出处
《石油化工安全环保技术》
CAS
2012年第6期32-35,39,共5页
Petrochemical Safety and Environmental Protection Technology
关键词
光纤光栅振动传感器
包络分析光纤周界
Fiber bragg grating
Vibration sensor
Envelopment analysis
Fiber perimeter
