摘要
详细介绍了布设于黄浦江上游航道的光纤水听器阵列及其工作原理。通过光纤水听器阵列采集过往船只的声信号,结合能量阈值与特征强线谱,实现了对过往船只数量的统计。实验结果表明,船只流量监测功能已基本实现。此外,通过集成其他参量的传感器,扩展了水听器阵列的功能,实现对航道多参量(水温、水位以及淤泥厚度)实时监测。
An array of fiber optic hydrophone laid in the upper reach of the Huangpu River and its working principle are introduced and demonstrated in detail.The sound signal of ships passing-by is collected by the array of fiber optic hydrophone,and the collected signal is combined with power threshold judgment and characteristic strong line spectrum,the count of ships passing-by is achieved.The experimental results show that the traffic monitoring function is basically implemented.In addition,several other kinds of sensor are integrated into the hydrophone array to extend the functions of the array,achieving the real-time monitoring of multiple parameters(including water temperature,water level,and mud thickness).
出处
《光纤与电缆及其应用技术》
2015年第2期27-30,共4页
Optical Fiber & Electric Cable and Their Applications
基金
上海市科学技术委员会基金资助项目(11511501400)
关键词
光纤水听器
船只流量监测
能量阈值
强线谱
fiber optic hydrophone
traffic monitoring
power threshold
strong line spectrum
