Non-contact magnetic induction heart rate and respiration rate synchronous detection method and system

Abstract

The invention discloses a non-contact magnetic induction heart rate and respiration rate synchronous detection method and system. A magnetic induction signal of the left thoracic cavity and a magnetic induction signal of the right thoracic cavity are subject to filtering processing respectively, and a phase difference signal of the left thoracic cavity and a phase difference signal of the right thoracic cavity are acquired; physiological information about heartbeat and respiration can be acquired through a phase detection method. Specific excitation frequency is acquired through screening based on the overall thoracic cavity volume specific conductance detection principle, the influence of an excitation magnetic field is weakened through a single excitation coil, two detection coils and the placing way that the excitation coil is perpendicular to the detection coils, the heartbeat and respiration information is separated from phase information through a rapid and independent component analysis method, and therefore synchronous non-contact heart rate and respiration rate monitoring is achieved.

Description

technical field [0001] The invention belongs to a method for monitoring physiological parameters in the field of biomedical engineering, and specifically refers to monitoring cardiopulmonary activity by means of non-contact magnetic induction. Background technique [0002] With the intensification of population aging and the gradual increase of medical costs, the monitoring of personal health conditions, especially the long-term monitoring in the family environment, is more and more urgent. At the same time, in clinical monitoring application centers, monitoring of lung activity is still very important important. At present, the main methods of cardiopulmonary monitoring include the use of electrodes and other contact sensors, such as conventional electrocardiogram, Holter dynamic electrocardiogram, impedance cardiography, pulse oximeter, respiratory flow meter, impedance breathing detector, etc. The common problem of these cardiopulmonary monitoring methods is that they ar...

AI Technical Summary

Problems solved by technology

The common problem of these cardiopulmonary monitoring methods is that they are all contact detection, which require the application of external contact electrodes, and cannot be effectively inspected or monitored for patients with severe trauma, burns, skin allergies and infectious diseases.

In addition, most detection instruments can only monitor one of the conditions of breathing or heart, but cannot perform simultaneous monitoring of heart and lung activity.

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