数字网络型光纤振动传感系统  

Fiber vibration sensor system of digital network

作　　者：李晓磊[1,2] 孙琪真[1,2] 孙志峰[1,2] 张海洲[1,2] 沃江海[1,2] 张满亮[1,2] 王梓[1,2] 刘德明[1,2] 

机构地区：[1]华中科技大学光电子科学与工程学院,湖北武汉430074 [2]武汉光电国家实验室,湖北武汉430074

出　　处：《红外与激光工程》2011年第6期1160-1163,共4页Infrared and Laser Engineering

基　　金：国家自然科学基金(60937002;60907037)

摘　　要：设计了一种新型光纤振动传感系统,该系统借鉴光通信中的无源光网络(PON)技术、光纤时分和波分混合复用传感侦测技术组建了数字网络型无源传感网络,系统传感单元的最大容量为32×8,有效地扩大了传感范围,实现了多传感单元系统化的集中管理,在处理算法中采用动态阈值自适应管理,可以根据环境变化实时改变阈值。在报警处理中,采用声、光、无线等多种报警技术,避免漏处理。实验结果表明:该系统工作稳定,集成化程度高,能够有效实现多传感单元、多类型入侵事件的有效报警。A novel type of fiber vibration sensor system was designed,which drew on the passive optical network（PON） technology,optical time-division multiplexing（TDM） and wavelength division multiplexing（WDM） technology in optical communication to form a digital network-based passive sensor network.The maximum capacity of system sensing unit is 32 × 8,which effectively expands the scope of the sensing and realizes the central management of multi-sensor units systematization.For data processing,the adaptive management algorithm of dynamic threshold was used to make the threshold change with the change of the environment,which could effectively prevent false alarms caused by environmental changes.Multiple methods,such as sound,light,wireless and other alerting technologies,were employed for vibration alarming,which can effectively avoid alarm leakage caused by man-made treatment.The experimental results demonstrate that the system is able to work stably with high degree of integration,and effectively alarm even when multiple intrusions occur at the same time.

关 键 词：数字网络 振动传感 萨格奈克 混合波分时分复用传感无源光网络 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]