Lung sound real-time monitoring method based on intelligent wearable system

Abstract

The invention discloses a lung sound real-time monitoring method based on an intelligent wearable system, and the method comprises the steps: collecting lung sound data through a lung sound sensor, carrying out the amplification processing, obtaining a lung sound signal, carrying out the EMD decomposition and Hilbert transformation of the lung sound signal, obtaining a Hilbert spectrum, and obtaining a frequency domain feature; reducing a lung sound signal acquired by a sensor into a lung sound signal of a respiratory cycle by changing the sampling frequency of the signal, and eliminating a trend error caused by trend term removal equipment by using a least square method so as to complete denoising preprocessing; decomposing the denoised and pre-processed lung sound signal into five detail layers by adopting wavelet transform taking db6 as a wavelet basis, filtering a wavelet coefficient by using a median threshold function and a nonlinear median threshold function by applying an adaptive threshold method, then filtering a noise signal through high-pass filtering and low-pass filtering, and finally recombining the filtered lung sound signal; performing feature extraction on normal lung sound, wheeze sound and rale sound to obtain a feature vector F of the lung sound signal; lung sound of a user is monitored in real time, and human health is protected.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method for real-time monitoring of lung sounds based on an intelligent wearable system. Background technique [0002] People's lives are getting richer, but due to certain environmental factors or bad living habits, people's bodies will be infected with respiratory diseases. According to statistics, the prevalence of chronic respiratory diseases in the world is 7.1%. The death caused by diseases accounted for 7.0% of the total number of deaths, and it was the third leading cause of death in the world, second only to cardiovascular diseases (31.8%) and tumors (17.1%). However, this data is growing rapidly, and the follow-up treatment of respiratory diseases will not only cause physical and mental burdens, but also cost a lot of money. Contents of the invention [0003] The purpose of the present invention is to provide a real-time monitoring method for lung sounds based on an int...

AI Technical Summary

Problems solved by technology

However, this number is growing rapidly. The follow-up treatment of respiratory diseases will not only cause physical and mental burdens, but also cost a lot of money.

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