Claims
- 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.
- 2. A motion intensity measuring apparatus according to claim 1, wherein light having such a wavelength at which the absorbance of oxygen hemoglobin is equal to that of reduced hemoglobin is used as one of said light having different wavelengths, and wherein said measuring means employs the amplitude of a blood pulse wave included in a detected signal associated with this light as a reference value, and compares the amplitude of a blood pulse wave included in a detected signal associated with another light to said reference value, thereby measuring said motion intensity of a living body.
- 3. A motion intensity measuring apparatus according to claim 1, wherein at least one of means including said light detecting means, said discrimination means and said measuring means is adapted to be supplied with electric power only when measurement is carried out.
- 4. A motion intensity measuring apparatus according to claim 3, wherein said electric power is supplied in a pulse current form.
- 5. A motion intensity measuring apparatus according to claim 1, wherein at least one of means including said light detecting means, said discrimination means and said measuring means is adapted to be supplied with electric power only when measurement is carried out at measurement timing which has been set in an intermittent fashion.
- 6. A motion intensity measuring apparatus according to claim 1, further including:motion intensity storing means for storing a measurement result provided by said measuring means; and display means for displaying the measurement result stored in said motion intensity storing means.
- 7. A motion intensity measuring apparatus according to claim 1, wherein said light detecting means includes a plurality of light emitting means for emitting light rays having different wavelengths, and further includes a plurality of light receiving means for receiving reflected light associated with the light rays emitted by respective said plurality of light emitting means, said plurality of light emitting means and said plurality of light receiving means being arranged in the lateral direction of a finger.
- 8. 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 the amplitude of the body motion to the amplitude of the blood pulse wave wherein the amplitudes of the body motion and blood pulse wave have been discriminated by said discrimination means, thereby measuring the motion intensity of said living body according to the change in the ratio between the amplitudes.
Priority Claims (1)
Number |
Date |
Country |
Kind |
5-241731 |
Sep 1993 |
JP |
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CROSS REFERENCE TO RELATED APPLICATIONS
This application is a divisional of application Ser. No. 08/808,523 filed Feb. 28, 1997, now U.S. Pat. No. 6,022,321, which is a continuation of application Ser. No. 08/309,386 filed Sep. 20, 1994, now abandoned. Application Ser. No. 08/808,523 is incorporated by reference herein in its entirety.
US Referenced Citations (7)
Foreign Referenced Citations (6)
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Continuations (1)
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Number |
Date |
Country |
Parent |
08/309386 |
Sep 1994 |
US |
Child |
08/808523 |
|
US |