Journal of Sensor Science and Technology (센서학회지)

The Korean Sensors Society (한국센서학회)
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Self-Powered Integrated Sensor Module for Monitoring the Real-Time Operation of Rotating Devices

회전기기 실시간 동작상태 모니터링을 위한 자가발전 기반 센서모듈

  • Kim, Chang Il (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Yeo, Seo-Yeong (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Park, Buem-Keun (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Jeong, Young-Hun (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology) ;
  • Paik, Jong Hoo (Electronic Convergence Division, Korea Institute of Ceramic Engineering & Technology)
  • 김창일 (한국세라믹기술원전자융합본부) ;
  • 여서영 (한국세라믹기술원전자융합본부) ;
  • 박범근 (한국세라믹기술원전자융합본부) ;
  • 정영훈 (한국세라믹기술원전자융합본부) ;
  • 백종후 (한국세라믹기술원전자융합본부)
  • Received : 2019.09.16
  • Accepted : 2019.09.27
  • Published : 2019.09.30
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Abstract

Rotating devices are commonly installed in power plants and factories. This study proposes a self-powered sensor node that is powered by converting the vibration energy of a rotating device into electrical energy. The self-powered sensor consists of a piezoelectric harvester for self-power generation, a rectifier circuit to rectify the AC signal, a sensor unit for measuring the vibration frequency, and a circuit to control the light emitting diode (LED) lighting. The frequency of the vibration source was measured using a piezoelectric-cantilever-type vibration frequency sensor. A green LED was illuminated when the measured frequency was within the normal range. The power generated by the piezoelectric harvester was determined, and the LED operation was assessed in terms of the vibration frequency. The piezoelectric harvester was found to generate a power of 3.061 mW or greater at a vibration acceleration of 1.2 g ($1g=9.8m/s^2$) and vibration frequencies between 117 and 123 Hz. Notably, the power generated was 4.099 mW at 122 Hz. As such, our self-powered sensor node can be used as a module for monitoring rotating devices, because it can convert vibration energy into electrical energy when installed on rotating devices such as air compressors.

Keywords

References

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