Smart Structures and Systems

  • 제3권1호
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  • Pages.1-22
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  • 2007
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  • 1738-1584(pISSN)
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  • 1738-1991(eISSN)
테크노프레스 (Techno-Press)
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A bond graph approach to energy efficiency analysis of a self-powered wireless pressure sensor

  • Cui, Yong (Department of Mechanical and Industrial Engineering, University of Massachusetts) ;
  • Gao, Robert X. (Department of Mechanical and Industrial Engineering, University of Massachusetts) ;
  • Yang, Dengfeng (Department of Mechanical and Industrial Engineering, University of Massachusetts) ;
  • Kazmer, David O. (Department of Plastics Engineering, University of Massachusetts)
  • 투고 : 2004.07.29
  • 심사 : 2006.04.13
  • 발행 : 2007.01.25
⟨ 이전 논문 다음 논문 ⟩

초록

The energy efficiency of a self-powered wireless sensing system for pressure monitoring in injection molding is analyzed using Bond graph models. The sensing system, located within the mold cavity, consists of an energy converter, an energy modulator, and a ultrasonic signal transmitter. Pressure variation in the mold cavity is extracted by the energy converter and transmitted through the mold steel to a signal receiver located outside of the mold, in the form of ultrasound pulse trains. Through Bond graph models, the energy efficiency of the sensing system is characterized as a function of the configuration of a piezoceramic stack within the energy converter, the pulsing cycle of the energy modulator, and the thicknesses of the various layers that make up the ultrasonic signal transmitter. The obtained energy models are subsequently utilized to identify the minimum level of signal intensity required to ensure successful detection of the ultrasound pulse trains by the signal receiver. The Bond graph models established have shown to be useful in optimizing the design of the various constituent components within the sensing system to achieve high energy conversion efficiency under a compact size, which are critical to successful embedment within the mold structure.

키워드

참고문헌

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피인용 문헌

  1. Optimization of the power flow extracted from a flexible structure using a control approach vol.18, pp.4, 2011, https://doi.org/10.1002/stc.374
  2. Wireless Technologies for Energy Harvesting and Transmission for Ambient Self-Powered Systems vol.15, pp.6, 2021, https://doi.org/10.1021/acsnano.1c02819