Bridge Structure Vibration Monitoring Technology based on Wireless Sensor Network

Abstract

This paper studies the network topology featuring multiple convergence points to optimize transmission efficiency of multi-hop network, realizes topology control of multi-data convergence points and improves data transmission rate and network throughput. This paper proposes a low-power loss multi-hop time synchronization method which selects reference node pair in multi-hop synchronization method based on greedy heuristic algorithm and extends single-hop synchronization method to multi-hop synchronization. Finally this paper constructs a test platform based on the existing vibration measurement sensor and Micaz wireless sensor node to measure transmission performance of the network based on the multi-data convergence point and validity of time synchronization method.