油库检测管理自动化的时分光纤传感网络

The TDM Fiber Sensors Network for Automatic Measuring and Managing of Oil Depots

本文介绍一个油库油罐液位、温度光时分光纤传感网。网中传感器共享光源、光检测器、光纤及二次仪表。时分光分配网由１×Ｎ、Ｎ×１光纤耦合器及光纤延时线构成并联星结构，并对其进行了设计计算。设计的实验网运行及测试结果说明，这个计算机控制的时分光纤传感网能正确可靠地进行数据采集，可以经济地实现油库检测管理自动化．

An optical fiber sensors network based on the TDM technique will be described in this paper. The temperature and liquid level of oil tanks can be measured by this network. The light source,detector,fiber cable and handling instrument will be shared by all sensor cells in the network. The star-style fiber TDM distributing network includes 1 × N,N × 1 couplers and fiber delayings. The principle and structure of the network will be analyzed and designed in detail. The sensitivity of 1mm and 0.1℃ have been gotten in the range of error of ± 2. 3mm and ± 0. 2℃ in the network,respectively. This network controlled by the computer can collect the data correctly and stable,and can achieve the automatic management of oil tanks at low cost.