论文部分内容阅读
对用于结构健康监测的分布式无线传感网络来说,时间同步技术在其中起着至关重要的作用,是实现网络中节点间协调采集数据的关键。文中提出了一种基于时间窗时间同步算法的无线应变采集系统。系统由上位机、协调器和节点组成。所提出的时间窗时间同步算法分为预同步阶段和正常同步阶段,具有低复杂度、易实现和稳定性相对较高的优点。实验表明,该系统同步精度和应变采样精度较高,能够满足一般的工程应用。
Time synchronization technology plays an important role in distributed wireless sensor networks for structural health monitoring, which is the key to achieving coordinated data acquisition among nodes in the network. In this paper, we propose a wireless strain collection system based on time-window time synchronization algorithm. System by the host computer, coordinator and nodes. The proposed time-window time synchronization algorithm is divided into pre-synchronization phase and normal synchronization phase, with the advantages of low complexity, easy implementation and relatively high stability. Experiments show that the system has high precision of synchronization and strain sampling, which can meet the general engineering application.