时间同步在管道泄漏检测中的应用研究

Application Study on Time Synchronization in Pipeline Leakage Detection

针对无线传感器网络中检测节点间时钟不同步的问题,提出基于点对点时间同步算法的子网同步方案。将节点时钟同步到基站,采用线性回归法拟合时钟偏移曲线以确定节点的时钟偏移率,补偿累积时间同步误差,实现节点间长时间同步。实验结果证明,补偿周期每6 min校正一次,得到节点间的同步误差控制在每秒10μs以内,累积误差不超过1 ms,能够满足管道泄漏检测的要求。

Aiming at the clock is asynchronous between the detection nodes in Wireless Sensor Network（WSN）, Time Synchronization Algorithm（PTPTSA） is proposed, which is subnet synchronous solution. The PTPTSA puts synchronize to the base station, and uses the linear regression to fit the clock offset curve, in order to d xennine the of the nodes, so compensating the accumulative time synchronization error, realizing the long time nodes. Experimental results show that while the clock compensation is carried out every 6 minuterror between nodes is within 10 microseconds per second, and the cumulative error is less than isec lneets the reqtiirement of＇water supply pipelines leak detection. ：c-to-Peer des clock ,ffset rate ween the onization Igorithm