中文摘要：

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。

英文摘要：

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.