Theory, technology and assembly of a highly symmetrical capacitive triaxial accelerometer

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    Abstract

    A highly symmetrical cubic easy-to-assemble capacitive triaxial accelerometer for biomedical applications has been designed, realized and tested. The outer dimensions of the sensor are 5×5×5 mm 3 and the device is mounted on a standard IC package. New aspects of the sensor are an easy assembly procedure, the use of the polymers polydimethylsiloxane (PDMS) as spring material between the capacitor plates and the mass and polyimide (PI) as flexible interconnection layer between the capacitor plates, and the highly symmetrical cubic structure. The mathematical model, technology and assembly procedure of the sensor are described. The measurement results show a good linearity in the output voltage for accelerations up to at least 5 g and a bandwidth of DC >50 Hz. In the x-axis the sensitivity was found to be 175 mV/g which is in good correspondence with the theory. The sensitivity can be increased when the PDMS layer is patterned, which was shown in previous versions of the highly symmetrical triaxial accelerometer
    Original languageUndefined
    Title of host publicationMEMS '97
    Place of PublicationNagoya, Japan
    PublisherIEEE
    Pages31-36
    ISBN (Print)0780337441
    DOIs
    Publication statusPublished - 26 Jan 1997
    Event10th Annual International Workshop on Micro Electro Mechanical Systems, MEMS 1997 - Nagoya, Japan
    Duration: 26 Jan 199730 Jan 1997
    Conference number: 10

    Publication series

    Name
    PublisherIEEE

    Workshop

    Workshop10th Annual International Workshop on Micro Electro Mechanical Systems, MEMS 1997
    Abbreviated titleMEMS
    CountryJapan
    CityNagoya
    Period26/01/9730/01/97

    Keywords

    • METIS-113767
    • IR-16882

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