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Heart rate meter (bicycle)

Discussion in 'Electronic Basics' started by Bob Masta, Dec 13, 2004.

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  1. Bob Masta

    Bob Masta Guest

    I can't find the original thread, but someone recently
    asked about data acquisition for an excecise bicycle.
    The OP wanted to measure heart rate and RPM.
    If he's still reading this NG, he may want to take a
    look at the December 2004 issue of Circuit Cellar
    magazine, which has an article by Jeff Bachiochi
    called "Light-to-Frequency Conversion (Part 1)".
    In it, he describes a nifty approach to measuring
    not only heart rate, but also blood oxygenation using
    a device with both red and IR LEDs, and comparing the
    ratio of the transmission to get oxgenation.

    Hope this helps!

    Bob Masta

    D A Q A R T A
    Data AcQuisition And Real-Time Analysis
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