Device and method for detecting chest motion signal under action of ship heave motion

Abstract

The invention relates to a device and a method for detecting chest motion signals under action of ship heave motion. The method comprises steps: arranging a detection device including a bed body, an elastic mattress body, and a pressure sensor; the elastic mattress body being arranged on the bed body, the elastic mattress body being provided with the pressure sensor; through system identificationunder an experiment environment or system identification under sailing environment, obtaining a discrete transfer function representing relations between bed body acceleration signals and pressure changing signals caused by ship heaving kinetic effect; identifying and confirming the discrete transfer function which is obtained by identification; according to the discrete transfer function and thebed body acceleration signals, calculating a signal estimated value of pressure variation caused by the ship heaving kinetic effect; subtracting the signal estimated value of pressure variation from the pressure changing signal obtained from the pressure sensor, to obtain a credible estimated value of the pressure changing signal, the credible estimated value being a chest motion signal of a person lying in bed. The device and the method make measurement of chest motion signals by a pressure sensitive mattress satisfy requirement of sleep monitoring of vessel personnel.

Description

technical field [0001] The invention relates to the technical field of measuring human physiological signals for ships, in particular to a device and method for detecting chest motion signals under the action of ship heave motion. Background technique [0002] When sleeping in bed, the contraction, relaxation and breathing of the human heart will cause the dynamic effect of the human chest. This dynamic effect will cause the contact pressure between the human body and the mattress on the bed to change. This pressure change can be passed through the pressure sensor device set on the mattress. The measured pressure change is the chest movement signal (or chest impact signal). The heart rate and respiration rate data of the bedridden person can be analyzed by using the measured chest motion signal. At the same time, it can also monitor the limb movement of the bedridden human body through the pressure change of the mattress, and obtain limb movement data. Combining the obtain...

AI Technical Summary

Problems solved by technology

[0007] It can be seen from the above that the existing pressure-sensitive mattresses cannot be applied to ships. In order to use pressure-sensitive mattresses for sleep monitoring of personnel on ships, new technical solutions must be proposed to solve the problem of ship heave motion monitoring. the impact of

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