Heart beat of the said living body heart beat in order Out to monitor state

摘要

PROBLEM TO BE SOLVED: To provide a monitoring device which is easy to use and is independent of the operation type. SOLUTION: A heartbeat calculation means 76 calculates a prediction signal S'n based on linear prediction coefficients a1 , a2 ...aP calculated by a linear prediction coefficient calculation means 70, and a value Ico indicating a heartbeat condition of an organism is calculated based on a residual signal en which is a difference between the prediction signal S'n and a pressure pulse wave signal Sn . Amplitude of the residual signal en or a signal strength of frequency analytic value of the residual signal en indirectly represents shrinkage force of a heart muscle or heartbeat amount corresponding to a periodically changed pitch impulse. As only one pressure pulse wave sensor 46 is attached to wrist or toe of an organism to detect pressure pulse wave generated from arterys of peripherals such as radius artery, the dorsal artery of foot, etc., this device is easy to use and is independent of the operation type.