CAJ | 학술논문

马赫-泽德干涉仪结构的光纤传感器应用于周界报警器系统,能够对发生在传感器区域内的振动信号进行报警,并具有极高的灵敏度.为了减少周界报警系统的误报警率,针对周界报警系统输出信号的处理问题,采用小波变换的方法对周界报警系统输出的电压信号进行辨识,不但能滤除信号中的噪声,而且能很好的保留信号的突变部分,可以很好的区分蓄意入侵与风雨产生的振动,从而减少系统误报警率并能实现对蓄意入侵定位,这对于周界报警器系统真正实现工程应用具有突破性进展.大量实验结果表明,采用小波变换方法辨识周界报警系统输出信号,能很好的体现测量信号中的奇异值并显著减少周界报警系统的误报警率.
마혁-택덕간섭의결구적광섬전감기응용우주계보경기계통,능구대발생재전감기구역내적진동신호진행보경,병구유겁고적령민도.위료감소주계보경계통적오보경솔,침대주계보경계통수출신호적처리문제,채용소파변환적방법대주계보경계통수출적전압신호진행변식,불단능려제신호중적조성,이차능흔호적보류신호적돌변부분,가이흔호적구분축의입침여풍우산생적진동,종이감소계통오보경솔병능실현대축의입침정위,저대우주계보경기계통진정실현공정응용구유돌파성진전.대량실험결과표명,채용소파변환방법변식주계보경계통수출신호,능흔호적체현측량신호중적기이치병현저감소주계보경계통적오보경솔.
The fiber-optic sensor based on Mach-Zehnder interferometer is used in the perimeter alarm system. It can be used for alarming the vibration signal which occurs in the sensing area and has a very high sensitivity. In order to reduce the false alarm rate of perimeter alarm system,for signal processing of perimeter alarm system,by applying the wavelet transform method, the voltage signal outputted by the perimeter alarm system is identified, which could not only filter the noise signal but also retain mutant signal and distinguish very well the vibrations produced by deliberate invasion and rain to reduce false alarm rates of the perimeter alarm system and realize the deliberate invasion positioning. It is a breakthrough for the perimeter alarm system to realize engineering application. A large number of experimental results showed that it could reflect the singular value of measurement signals and remarkably reduce the false alarm rate of perimeter alarm system based on wavelet transform method to analyze signal of perimeter alarm system.