基于时间窗同步算法的无线应变采集系统设计

The Design of Wireless Strain Acquisition System Based on Time Window Synchronization Algorithm

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。

For the distributed wireless sensor networks of structural health monitoring,the time synchronization technology plays an important role,and it is the key to achieve the datacoordination between nodes in the network. In this paper a wireless strain acquisition system based on time window synchronization algorithm was proposed. The system included upper computer,coordinator and nodes. This algorithm can be divided into pre-synchronization stage and synchronization stage and it has many advantages,such as low complexity,easy implementation and high stability. According to the experimental results,the system has a high synchronization precision and sampling precision,which can be appliedin normal engineering application.