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Proceedings Paper

A preliminary study on the use of optical navigation sensor for two dimensional crack propagation monitoring
Author(s): Chih-Chen Chang; Sin-Hang Man; Cheng Zhong Ng; Muhammad Hassan; Amine Bermak
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Paper Abstract

In this paper, a preliminary study on the development of a wireless image-based sensor for two-dimensional (2D) crack propagation monitoring is reported. This sensor contains an optical navigation sensor board (ADNS-9500) which is incorporated into the Imote2 IPR2400 platform. To monitor crack propagation, the Imote2 sends a signal to the ADNS-9500 to switch on the built-in laser and camera collecting images reflected from the concrete surface. The captured images are processed by an optical flow method to obtain the relative displacement between images. A series of tests have been conducted to calibrate the accuracy of the proposed crack sensor. Results show that the crack sensor exhibits a strong linearity under 2D movement and can track the movement quiet well.

Paper Details

Date Published: 6 April 2012
PDF: 10 pages
Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 834532 (6 April 2012); doi: 10.1117/12.914546
Show Author Affiliations
Chih-Chen Chang, Hong Kong Univ. of Science and Technology (Hong Kong, China)
Sin-Hang Man, Hong Kong Univ. of Science and Technology (Hong Kong, China)
Cheng Zhong Ng, Hong Kong Univ. of Science and Technology (Hong Kong, China)
Muhammad Hassan, Hong Kong Univ. of Science and Technology (Hong Kong, China)
Amine Bermak, Hong Kong Univ. of Science and Technology (Hong Kong, China)


Published in SPIE Proceedings Vol. 8345:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012
Masayoshi Tomizuka; Chung-Bang Yun; Jerome P. Lynch, Editor(s)

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