Wearable heart sound and lung sound monitoring device based on piezoelectric sensor

Abstract

The invention discloses a wearable heart sound and lung sound monitoring device based on a piezoelectric sensor. The monitoring device comprises a flexible substrate layer, the piezoelectric sensor and a processing module; the piezoelectric sensor is connected with the processing module, the piezoelectric sensor and the processing module are both fixed on the flexible substrate layer, and the piezoelectric sensor comprises a piezoelectric heart sound sensor and a piezoelectric lung sound sensor; the piezoelectric sensor is used for collecting heart sound signals and lung sound signals and transmitting the heart sound signals and the lung sound signals to the processing module for processing, and the heart sound and lung sound monitoring device is worn on the chest and lungs of a user through the flexible substrate layer for heart sound and lung sound monitoring; the flexible substrate layer is made from an elastic fabric. The wearable heart sound and lung sound monitoring device basedon the piezoelectric sensor has the advantages that the comfort of a monitoring chest belt is good, long-term dynamic monitoring is achieved, clinicopathologic analysis is achieved, and real-time monitoring of the heart sound signals and lung sound signals is achieved.

Description

technical field [0001] The invention relates to the field of biomedical signal detection, in particular to a wearable heart sound and lung sound monitoring device based on a piezoelectric sensor. Background technique [0002] At present, the incidence of cardiovascular disease is increasing year by year, and has become a frequently-occurring and common disease that endangers human health, and is the main killer that threatens human life. [0003] Valvular heart disease (VHD) is a classic cardiovascular disease that causes severe discomfort and negative impact on patients' function and long-term life. Long-term and dynamic observation of early and sudden heart disease to capture short-term non-sustained abnormal ECG (heart sound) changes is crucial for diagnosing heart disease and reducing heart disease (especially VHD) mortality role. [0004] At present, there is still a lack of heart sound pickup devices that can be worn comfortably for a long time, and traditional steth...

AI Technical Summary

Problems solved by technology

The traditional stethoscope has the advantages of low cost and simple operation, but it is also limited by three factors

First, since heart sounds are composed of a mixture of low-amplitude high-frequency (HF) and low-frequency (LF) sound signals, a stethoscope or a transducer used in a stethoscope needs to have high selective sensitivity; The sound data are often disturbed by noise, which cannot accurately and effectively diagnose heart disease; third, the interpretation of heart and lung sounds depends largely on the experience, skills and hearing of doctors, and there are large differences in the diagnostic level of different doctors

Images