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Vibration Powered Generator System for Stand-Alone Health Monitoring Sensor Unit

건전도 감시용 자립형 계측유닛을 위한 진동발전시스템

  • 최남섭 (여수대학교 전자통신ㆍ전기공학부) ;
  • 김재민 (여수대학교 건설환경공학부)
  • Published : 2003.04.01

Abstract

This paper presents an electric power generating system for stand-alone health monitoring sensor unit of bridge structure based on ambient vibration of bridge. In this paper, a novel electric power generator which has minimum effect of armature reaction is proposed. The related mechanical and electrical design equations are obtained, and a pilot generator has been implemented. In addition, the charging system for extremely low generator current is discussed, and some improvements are identified for the system. This investigation reveals that diode characteristics of rectifier is dominant factor in the charging process. Finally, both the simulation, which uses real measurement data of the Namhae bridge as input of the pilot generator, and indoor test are carried out. The results showed the applicability and effectiveness of the stand-alone vibration powered generator.

Keywords

electric power generator;charging system;structural health monitoring;stand-alone sensor unit;bridge

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