Low power consumption design of micro-machined thermal sensor for portable spirometer

Nan Fu Chiu, Tzu Chien Hsiao, Chii Wann Lin

    研究成果: 雜誌貢獻期刊論文同行評審

    12 引文 斯高帕斯(Scopus)

    摘要

    There are great needs for a low cost and low power consumption portable spirometer for the home care of respiratory diseases. Thermal anemometer has the advantage of possible miniaturization by modem microfabrication processes. However, its optimal design remains to be a technical challenge for the trade off between required sensitivity and power consumption. The designed features of such a sensor include low thermal conduction via substrate, wide dynamic range (0∼180 L/Min) to cover high peak flow rate and possible low cost mass production. To meet these requirements, we used both surface and bulk micromachining techniques to fabricate the sensor for optimal performance. Testing of constructed prototype showed that it can be used under low operating voltage of 3 volts. According to the American Thoracic Society (ATS) guidance for the measurement of pulmonary functions, including dynamic volume of forced expiratory vital capacity (FVC) and flow during forced expiration: peak expiratory flow rate (PEFR), it has necessary accuracy (≤ 3% variation) for diagnosis requirements.

    原文英語
    頁(從 - 到)225-230
    頁數6
    期刊Tamkang Journal of Science and Engineering
    8
    發行號3
    出版狀態已發佈 - 2005 九月 1

    ASJC Scopus subject areas

    • Engineering(all)

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