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Blood pulse wave detecting apparatus and motion intensity measuring apparatus

  • US 6,217,523 B1
  • Filed: 11/23/1999
  • Issued: 04/17/2001
  • Est. Priority Date: 09/28/1993
  • Status: Expired due to Term
First Claim
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1. A motion intensity measuring apparatus, comprising:

  • light detecting means for detecting the amount of light transmitted through or reflected from a living body illuminated with light having different wavelengths;

    discrimination means for making comparison of amplitudes of frequency components associated with each said wavelength wherein said frequency components are included in a detected signal provided by said light detecting means, thereby discriminating a blood pulse wave of said living body from its body motion wave according to the relationships between the ratios of said amplitudes of frequency components; and

    measuring means for making comparison of amplitudes of body motion associated with said different wavelengths wherein said amplitudes have been discriminated by said discrimination means, thereby measuring the motion intensity of said living body according to the change in the ratio of said amplitudes of body motion.

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