Share Email Print
cover

Proceedings Paper

Design and implementation of smart sensor nodes for wireless disaster monitoring systems
Author(s): Yih-Fan Chen; Wen-Jong Wu; Chun-Kuang Chen; Chih-Min Wen; Ming-Hui Jin; Chung-Yun Gau; Chih-Chie Chang; Chih-Kung Lee
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

A newly developed smart sensor node that can monitor the safety of temporary structures such as scaffolds at construction sites is detailed in this paper. The design methodology and its trade-offs, as well as its influence on the optimization of sensor networks, is examined. The potential impact on civil engineering construction sites, environmental and natural disaster pre-warning issues, etc., all of which are foundations of smart sensor nodes and corresponding smart sensor networks, is also presented. To minimize the power requirements in order to achieve a true wireless system both in terms of signal and power, a sensor node was designed by adopting an 8051-based micro-controller, an ISM band RF transceiver, and an auto-balanced strain gage signal conditioner. With the built-in RF transceiver, all measurement data can be transmitted to a local control center for data integrity, security, central monitoring, and full-scale analysis. As a battery is the only well-established power source and there is a strong desire to eliminate the need to install bulky power lines, this system designed includes a battery-powered core with optimal power efficiency. To further extend the service life of the built-in power source, a power control algorithm has been embedded in the microcontroller of each sensor node. The entire system has been verified by experimental tests on full-scale scaffold monitoring. The results show that this system provides a practical method to monitor the structure safety in real time and possesses the potential of reducing maintenance costs significantly. The design of the sensor node, central control station, and the integration of several kinds of wireless communication protocol, all of which are successfully integrated to demonstrate the capabilities of this newly developed system, are detailed. Potential impact to the network topology is briefly examined as well.

Paper Details

Date Published: 29 July 2004
PDF: 8 pages
Proc. SPIE 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (29 July 2004); doi: 10.1117/12.539101
Show Author Affiliations
Yih-Fan Chen, National Taiwan Univ. (Taiwan)
Wen-Jong Wu, National Taiwan Univ. (Taiwan)
Chun-Kuang Chen, National Taiwan Univ. (Taiwan)
Chih-Min Wen, National Taiwan Univ. (Taiwan)
Ming-Hui Jin, National Taiwan Univ. (Taiwan)
Chung-Yun Gau, Institute of Occupational Safety and Health, Council of Labor Affairs (Taiwan)
Chih-Chie Chang, Institute of Occupational Safety and Health, Council of Labor Affairs (Taiwan)
Chih-Kung Lee, National Taiwan Univ. (Taiwan)


Published in SPIE Proceedings Vol. 5391:
Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
Shih-Chi Liu, Editor(s)

© SPIE. Terms of Use
Back to Top