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20 April 2016 Impacts of structural vibration on the performance of ultrasound sensor networks powered by vibration-harvested energy
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This paper develops an energy-aware ultrasonic sensor network architecture using a Pulse Switching approach for lightweight, through-substrate operation in Structural Health Monitoring applications. Pulse Switching protocols employ single pulses instead of multi-bit packets for information delivery with maximal lightness in event monitoring with binary sensing requirements i.e. where event information transmitted is only a single bit (YES / NO) based on evaluation of structural characteristics. The paper presents a simulation study of the Energy-Aware Through-Substrate Pulse Switching protocol performance for structural monitoring when operated using energy harvested from intermittent vibrations in the structure itself. The paper incorporates an energy harvesting model for simulating memory-less vibration patterns using exponentially distributed random processes at different networked nodes. These nodes are placed inside a rectangular plate structure and the corresponding harvested energy profiles are simulated. The vibration profiles are a function of the position of the node on the plate as well as time. Such spatio-temporal variation leads to interesting dynamics in the energy-aware protocol operation which have been explored in the current paper setting. Through the simulations, it is shown that the proposed Energy-Aware Pulse Switching protocol mechanisms can offer a robust through-substrate network that can be reliably used for Structural Health Monitoring using vibration-harvested energy.
Conference Presentation
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Saptarshi Das, Yan Shi, Bo Dong, and Subir Biswas "Impacts of structural vibration on the performance of ultrasound sensor networks powered by vibration-harvested energy", Proc. SPIE 9803, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2016, 98032G (20 April 2016);

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