For side airbag systems it is necessary to measure the acceleration within a time of less than 3 ms in order to inflate the side airbag in time. A new generation of side airbag sensors that uses a linear accelerometer is presented. The evaluation circuit includes amplification, temperature coefficient compensation, two wire unidirectional current interface, and a zero-offset compensation. The sensing element for the measurement of acceleration is a surface micromachined accelerometer. In order to minimize the production costs the surface micromachined sensor element and the corresponding evaluation ASIC are packaged into a standard PLCC28 housing. For the entire function only few external components are necessary. During the power-on cycle an internal selftest is carried out and the result is transmitted to the airbag control unit. Most important results of the characterization are presented.


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    Titel :

    Side airbag sensor in silicon micromachining


    Weitere Titelangaben:

    Seitenairbagsensor in Silicium-Mikrooberflächenbearbeitung


    Beteiligte:
    Ullmann, D. (Autor:in) / Bischopink, G. (Autor:in) / Schöfthaler, M. (Autor:in) / Schellin, R. (Autor:in) / Maihöfer, B. (Autor:in) / Seibold, J. (Autor:in) / Marek, J. (Autor:in)


    Erscheinungsdatum :

    2000


    Format / Umfang :

    5 Seiten, 11 Bilder, 6 Quellen



    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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    Ullmann,D. / Bischopink,G. / Schoefthaler,M. et al. | Kraftfahrwesen | 1999


    Side Airbag Sensor in Silicon Micromachining

    Ullmann, D. / Bischopink, G. / Schoefthaler, M. et al. | British Library Conference Proceedings | 1999


    Side Airbag Sensor in Silicon Micromachining

    Maihöfer, B. / Ullmann, D. / Bischopink, G. et al. | SAE Technical Papers | 1999


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