An energy management circuit for self-powered ubiquitous sensor modules using vibration-based energy

Pan Jun, Inoue Yasuaki, Liang Zheng

    Research output: Contribution to journalArticle

    3 Citations (Scopus)


    An energy management circuit is proposed for selfpowered ubiquitous sensor modules using vibration-based energy. With the proposed circuit, the sensor modules work with low duty cycle operation. Moreover, a two-tank circuit as a part of the energy management circuit is utilized to solve the problem that the average power density of ambient energy always varies with time while the power consumption of the sensor modules is constant and larger than it. In addition, the long start-up time problem is also avoided with the timing control of the proposed energy management circuit. The CMOS implementation and silicon verification results of the proposed circuit are also presented. Its validity is further confirmed with a vibration-based energy generation. The sensor module is used to supervise the vibration of machines and transfer the vibration signal discontinuously. A piezoelectric element acts as the vibration-to-electricity converter to realize battery-free operation.

    Original languageEnglish
    Pages (from-to)2116-2123
    Number of pages8
    JournalIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
    Issue number10
    Publication statusPublished - 2007 Oct



    • Battery-free
    • Energy management
    • Sensor module
    • Two-tank
    • Ubiquitous
    • Vibration

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Computer Graphics and Computer-Aided Design
    • Applied Mathematics
    • Signal Processing

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