Development of autonomous triggering instrumentation

Steve E. Watkins; Theresa M. Swift; James W. Fonda

doi:10.1117/12.776008

8 April 2008 Development of autonomous triggering instrumentation

Steve E. Watkins, Theresa M. Swift, James W. Fonda

Proceedings Volume 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008; 693235 (2008) https://doi.org/10.1117/12.776008
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2008, San Diego, California, United States

Abstract

Triggering instrumentation for autonomous monitoring of load-induced strain is described for economical, fast bridge inspection. The development addresses one aspect for the management of transportation infrastructure - bridge monitoring and inspection. The objectives are to provide quantitative performance information from a load test, to minimize the setup time at the bridge, and to minimize the closure time to traffic. Multiple or networked measurements can be made for a prescribed loading sequence. The proposed smart system consists of in-situ strain sensors, an embedded data acquisition module, and a measurement triggering system. A companion control unit is mounted on the truck serving as the load. As the truck moves to the proper position, the desired measurement is automatically relayed back to the control unit. In this work, the testing protocol is developed and the performance parameters for the triggering and data acquisition are measured. The test system uses a dedicated wireless sensor mote and an infrared positioning system. The electronic procedure offers improvements in available information and economics.

Citation Download Citation

Steve E. Watkins, Theresa M. Swift, and James W. Fonda "Development of autonomous triggering instrumentation", Proc. SPIE 6932, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2008, 693235 (8 April 2008); https://doi.org/10.1117/12.776008

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