ANALYZER FOR RESPIRATORY SIGNAL

摘要

PROBLEM TO BE SOLVED: To provide analyzer for a respiratory signal which analyzes the respiratory signal with a waveform to be generated from the measurement value of a load change to be added to the lower side of a subject, and improving precision in determining a respiratory condition. SOLUTION: The analyzer for a respiratory signal includes: load measuring means arranged on the lower side of the body of the subject so as to measure the load change accompanied with biological action of the subject; signal generating means for generating an original respiratory signal (S) with a waveform, on the basis of the measured load change; signal processing means for successively calculating the moving average (M) of amplitude of the original respiratory signal (S), comparing n-th amplitude (A) with the product of the moving average (M) of the amplitude and a preset upper limit threshold (Kmax), defining the amplitude (A) as the n-th amplitude (A) in the case of Amax, and forming a deemed respiratory signal (S') by replacing the n-th amplitude (A) with M×Kmaxin the case of A≥M×Kmax; and detecting means for detecting a respiratory standstill condition or a low respiratory condition in the deemed respiratory signal (S'), on the basis of the variation condition of the amplitude. COPYRIGHT: (C)2011,JPO&INPIT