A preliminary study on the use of optical navigation sensor for two dimensional crack propagation monitoring

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.

[1]  Hassan Foroosh,et al.  Extension of phase correlation to subpixel registration , 2002, IEEE Trans. Image Process..

[2]  Gul Agha,et al.  Flexible smart sensor framework for autonomous structural health monitoring , 2010 .

[3]  Dongjun Hyun,et al.  Differential optical navigation sensor for mobile robots , 2009 .

[4]  Qi Tian,et al.  Algorithms for subpixel registration , 1986 .

[5]  Shinae Jang,et al.  Structural health monitoring of a cable-stayed bridge using wireless smart sensor technology: data analyses , 2010 .

[6]  Jan Flusser,et al.  Image registration methods: a survey , 2003, Image Vis. Comput..

[7]  Takeo Kanade,et al.  An Iterative Image Registration Technique with an Application to Stereo Vision , 1981, IJCAI.

[8]  Fu-Pen Chiang,et al.  Super-resolution digital speckle photography for micro/nano measurements , 2009 .

[9]  Chih-Chen Chang,et al.  Nontarget Image-Based Technique for Small Cable Vibration Measurement , 2008 .

[10]  Ming Chen,et al.  Robust technique of analyzing and locating laser speckle patterns for optical computer mice , 2009 .

[11]  Matthew P. Kotowsky.  Wireless Sensor Networks for Monitoring Cracks in Structures , 2010 .

[12]  Sung-Han Sim,et al.  Decentralized random decrement technique for efficient data aggregation and system identification in wireless smart sensor networks , 2011 .

[13]  Yongheng Shang,et al.  Lunar lander's three-dimensional translation and yaw rotation motion estimation during a descent phase using optical navigation ☆ , 2011 .

[14]  Gul Agha,et al.  Structural health monitoring of a cable-stayed bridge using smart sensor technology: deployment and evaluation , 2010 .

[15]  K. Wan,et al.  Applications of a distributed fiber optic crack sensor for concrete structures , 2007 .

[16]  Hidetoshi Miike,et al.  Determining optical flow from sequential images , 1988, Systems and Computers in Japan.