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Proceedings Paper

Energy efficiency analysis of a self-powered pressure sensor using bond graph
Author(s): Yong Cui; Robert X. Gao; David O. Kazmer
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Paper Abstract

This paper presents a Bond graph approach to analyzing the energy efficiency of a self-powered wireless pressure sensor for pressure measurement in an injection mold. The sensor is located within the mold cavity and consists of an energy converter, an energy modulator, and a signal transmitter. Pressure variation in the mold cavity is extracted by the energy converter and transmitted through the mold steel in the form of ultrasound pulses to a signal receiver located outside of the mold. Through Bond graph models, the energy efficiency of the sensing system is characterized as a function of the configuration of the piezoceramic stack within the energy converter, and the pulsing cycle of the energy modulator. The obtained energy model is then used to identify the minimum level of signal intensity required to ensure successful detection of the ultrasound signals by the signal receiver. The Bond graph models established can be further used to optimize the design of the sensing system and its constituent components.

Paper Details

Date Published: 17 May 2005
PDF: 9 pages
Proc. SPIE 5765, Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (17 May 2005); doi: 10.1117/12.599551
Show Author Affiliations
Yong Cui, Univ. of Massachusetts/Amherst (United States)
Robert X. Gao, Univ. of Massachusetts/Amherst (United States)
David O. Kazmer, Univ. of Massachusetts/Lowell (United States)


Published in SPIE Proceedings Vol. 5765:
Smart Structures and Materials 2005: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems
Masayoshi Tomizuka, Editor(s)

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