Abstract
This paper presents the design concepts of wireless sensor network system constructed with autonomous sensing nodes, which operates at extremely low power levels. At first, conventional, wired civil structure health-monitoring system is reviewed. Then, the monitoring methodology is discussed focusing quantitative measurement accuracy. Issues of node synchronized sampling, multi-layer cluster, node distance and integrated sensor node module are discussed. Also, radio transceiver protocol candidates are reviewed from the point of connection to the Internet gateway. Sensor node consists of microprocessor, sensing analog front end, and radio transceiver. Last two factors are critical for power consumption. Therefore, low duty cycle measurement is essential, in order to accomplish the ultra low power level, which is equivalent to energy harvesting source, such as piezoelectric and solar cells, sensor node power management device circuit design is demonstrated for the high-spec measurement.
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Hamasaki, T. Power management of autonomous wireless sensor node for structure health monitoring. Analog Integr Circ Sig Process 75, 217–224 (2013). https://doi.org/10.1007/s10470-012-9932-6
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DOI: https://doi.org/10.1007/s10470-012-9932-6