A new type of intelligent wireless sensing network for health monitoring of large-size structures

Ying Lei; Ch. Liu; D. T. Wu; Y. L. Tang; J. X. Wang; L. J. Wu; X. D. Jiang

doi:10.1117/12.843557

20 October 2009 A new type of intelligent wireless sensing network for health monitoring of large-size structures

Ying Lei, Ch. Liu, D. T. Wu, Y. L. Tang, J. X. Wang, L. J. Wu, X. D. Jiang

Proceedings Volume 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering; 74930H (2009) https://doi.org/10.1117/12.843557
Event: Second International Conference on Smart Materials and Nanotechnology in Engineering, 2009, Weihai, China

Abstract

In recent years, some innovative wireless sensing systems have been proposed. However, more exploration and research on wireless sensing systems are required before wireless systems can substitute for the traditional wire-based systems. In this paper, a new type of intelligent wireless sensing network is proposed for the heath monitoring of large-size structures. Hardware design of the new wireless sensing units is first studied. The wireless sensing unit mainly consists of functional modules of: sensing interface, signal conditioning, signal digitization, computational core, wireless communication and battery management. Then, software architecture of the unit is introduced. The sensing network has a two-level cluster-tree architecture with Zigbee communication protocol. Important issues such as power saving and fault tolerance are considered in the designs of the new wireless sensing units and sensing network. Each cluster head in the network is characterized by its computational capabilities that can be used to implement the computational methodologies of structural health monitoring; making the wireless sensing units and sensing network have "intelligent" characteristics. Primary tests on the measurement data collected by the wireless system are performed. The distributed computational capacity of the intelligent sensing network is also demonstrated. It is shown that the new type of intelligent wireless sensing network provides an efficient tool for structural health monitoring of large-size structures.

Citation Download Citation

Ying Lei, Ch. Liu, D. T. Wu, Y. L. Tang, J. X. Wang, L. J. Wu, and X. D. Jiang "A new type of intelligent wireless sensing network for health monitoring of large-size structures", Proc. SPIE 7493, Second International Conference on Smart Materials and Nanotechnology in Engineering, 74930H (20 October 2009); https://doi.org/10.1117/12.843557

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