BIOLOGICAL INFORMATION DETECTING APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a biological information detecting apparatus for detecting heartbeat information on a living body regardless of presence of vibration noise from an outer part.

SOLUTION: A difference between the respective power spectra of output signals from first and second vibration detecting means 8, 10 is calculated at each frequency, so that the frequency with the maximum difference of the power spectra in a preset basic heartbeat frequency area is acquired as the heartbeat information. The heartbeat information is acquired not by noting a frequency band (about 4-7Hz) in the number of resonance vibrations of the living body as in the conventional manner but by noting the basic heartbeat frequency area normally appearing in around 1-2Hz. Consequently, it is prevented that a heartbeat signal is buried in the large vibration signal of a human body by a traveling vibration to unable detection of the heartbeat information as in the conventional manner.

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