BIOLOGICAL SIGNAL MEASURING SYSTEM AND BIOLOGICAL SIGNAL MEASURING APPARATUS

摘要

A biological signal measuring system includes: a light emitter emitting a first light beam and a second light beam; a light receiver outputting first and second signals in accordance with light intensities of the first and second light beams that have been passed through or reflected from a living tissue of a subject; a first calculating section acquiring a light attenuation of the first light beam based on the first signal and a light attenuation of the second light beam based on the second signal; a second calculating section acquiring a blood-derived light attenuation based on the light attenuation of the first and second light beams; a third calculating section acquiring information relating to a blood oxygen saturation based on a change amount of the blood-derived light attenuation associated with pressurization of the living tissue; and an outputting section outputting the acquired information.

主权项

1. A biological signal measuring system comprising:
a light emitter which is configured to emit a first light beam having a first wavelength, and a second light beam having a second wavelength; a light receiver which is configured to output first and second signals respectively in accordance with received light intensities of the first and second light beams that have been passed through or reflected from a living tissue of a subject; a first calculating section which is configured to acquire a light attenuation of the first light beam based on the first signal, and a light attenuation of the second light beam based on the second signal; a second calculating section which is configured to acquire a blood-derived light attenuation based on the light attenuation of the first light beam, and the light attenuation of the second light beam; a third calculating section which is configured to acquire information relating to a blood oxygen saturation, based on an amount of change of the blood-derived light attenuation associated with pressurization of the living tissue; and an outputting section which is configured to output the acquired information.