Solar-powered multi-scale sensor node on Imote2 platform for hybrid SHM in cable-stayed bridge

In this paper, solar-powered, multi-scale, vibration-impedance sensor node on Imote2 platform is presented for hybrid structural health monitoring (SHM) in cable-stayed bridge. In order to achieve the objective, the following approaches are proposed. Firstly, vibration- and impedance-based hybrid SHM methods are briefly described. Secondly, the multi-scale vibration and impedance sensor node on Imote2-platform is presented on the design of hardware components and embedded software for vibration- and impedance-based SHM. In this approach, a solar-powered energy harvesting is implemented for autonomous operation of the smart sensor nodes. Finally, the feasibility and practicality of the smart sensor-based SHM system is evaluated on a full-scale cable-stayed bridge, Hwamyung Bridge in Korea. Successful level of wireless communication and solar-power supply for smart sensor nodes are verified. Also, vibration and impedance responses measured from the target bridge which experiences various weather conditions are examined for the robust long-term monitoring capability of the smart sensor system.

[1]  Gyuhae Park,et al.  Development of an impedance-based wireless sensor node for structural health monitoring , 2007 .

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

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

[4]  Billie F. Spencer,et al.  Smart sensing technology: opportunities and challenges , 2004 .

[5]  Rune Brincker,et al.  Modal identification of output-only systems using frequency domain decomposition , 2001 .

[6]  Daniel J. Inman,et al.  Impedance-Based Structural Health Monitoring for Temperature Varying Applications , 1999 .

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

[8]  Norris Stubbs,et al.  Damage Localization in Structures Without Baseline Modal Parameters , 1996 .

[9]  Jerome P. Lynch,et al.  Autonomous smart sensor nodes for global and local damage detection of prestressed concrete bridges based on accelerations and impedance measurements , 2010 .

[10]  C. Liang,et al.  Electro-mechanical impedance modeling of active material systems , 1996 .

[11]  Hoon Sohn,et al.  Overview of Piezoelectric Impedance-Based Health Monitoring and Path Forward , 2003 .

[12]  Hiroshi Zui,et al.  Practical Formulas for Estimation of Cable Tension by Vibration Method , 1996 .

[13]  Hyun-Man Cho,et al.  Vibration-Based Damage Monitoring in Model Plate-Girder Bridges under Uncertain Temperature Conditions , 2007 .

[14]  Dong-Soo Hong,et al.  Hybrid health monitoring of prestressed concrete girder bridges by sequential vibration-impedance approaches , 2010 .

[15]  Charles R. Farrar,et al.  A summary review of vibration-based damage identification methods , 1998 .

[16]  Yang Wang,et al.  Performance monitoring of the Geumdang Bridge using a dense network of high-resolution wireless sensors , 2006, Smart Materials and Structures.

[17]  Robert D. Adams,et al.  A Vibration Technique for Non-Destructively Assessing the Integrity of Structures: , 1978 .

[18]  Jeong-Tae Kim,et al.  Hybrid acceleration-impedance sensor nodes on Imote2-platform for damage monitoring in steel girder connections , 2011 .

[19]  Carlos E. S. Cesnik,et al.  Review of guided-wave structural health monitoring , 2007 .