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13 November 1996 Structural monitoring using a remote smart telemetry data-acquisition network (INVONET)
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The US Department of Transportation sought out the development of technologies to enhance infrastructure health monitoring. Specifically, the agency requested methods to improve data collection of sensor measurements over distributed points on highway bridges. The current methods of data collection used hard wire connections for data transmission, which resulted in increased labor and installation cots. Furthermore, the hardwire connections hinder the mobility of the data collection units and the ability to quickly measure a number of distributed points. In response to this problem, Invocon, Inc. designed a static, wireless, data acquisition and communications network as an experimentation tool to evaluate the performance of bridge structures under transient loads. The network incorporates two-way, RF, spread spectrum communications between distributed noes or units and a central collection unit. Spread spectrum technology reduces potential interference from other RF source while operating at low transmit power levels that preserve battery life and will not interfere with other communications.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Karl F. Kiefer "Structural monitoring using a remote smart telemetry data-acquisition network (INVONET)", Proc. SPIE 2946, Nondestructive Evaluation of Bridges and Highways, (13 November 1996);


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