Integrated micro-displacement sensor and its application to photoplethysmographic sensor

Hirofumi Nogami, Ryo Inoute, Yuma Hayashida, Renshi Sawada

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Photoplethysmography (PPG) has been widely and commonly used, as it has a wide range of information such as stress level, heart rate interval, respiration rate, blood vessel hardness etc. It is necessary to control contact force between a PPG sensor and measurement part (skin surface), in order to obtain accurate PPG signal. We suggest new sensor module which can measure both pulse wave and contact force. A sensor module has a micro integrated displacement sensor chip with optical source, photo diodes, and op-amp circuits, and a gum flame with a mirror. One photodiode can detect reflecting light from a mirror and measure gum flame displacement, which is displaced by a contact force. On the other hand, some of the incident light penetrates into a finger, and the scattering light, which have biological signal (pulse wave) are detected by one photodiode. In this paper, we fabricate multifunctional sensor module and attempt to simultaneously measure the pulse wave and contact force.

    Original languageEnglish
    Title of host publicationMHS 2017 - 28th 2017 International Symposium on Micro-NanoMechatronics and Human Science
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages1-5
    Number of pages5
    ISBN (Electronic)9781538633144
    DOIs
    Publication statusPublished - Feb 28 2018
    Event28th International Symposium on Micro-NanoMechatronics and Human Science, MHS 2017 - Nagoya, Japan
    Duration: Dec 3 2017Dec 6 2017

    Publication series

    NameMHS 2017 - 28th 2017 International Symposium on Micro-NanoMechatronics and Human Science
    Volume2018-January

    Other

    Other28th International Symposium on Micro-NanoMechatronics and Human Science, MHS 2017
    CountryJapan
    CityNagoya
    Period12/3/1712/6/17

    All Science Journal Classification (ASJC) codes

    • Biotechnology
    • Biomedical Engineering
    • Electrical and Electronic Engineering
    • Mechanical Engineering

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