Abstract
In recent years, the mortality rate of cardiovascular diseases and the younger generation have attracted people's attention. At the same time, there is an increasing demand for devices that can monitor the physiological parameters of the heart. In this research, a wearable devices was designed and developed for heart sound collection. Microphones wrapped in urethane resin holders were directly fixed on the vest for heart sound collection. The device has received many positive reviews in terms of comfort. The cumulative contribution rate of the two common factors (material factor and clothing design factor) obtained through factor analysis was 75.371%, which was the main factor affecting the experience of using the device. Finally, the heart sounds of 11 healthy young people were collected and input into the completed convolutional neural network for detection, and an accuracy rate of 71.3% was obtained. Therefore, it can be concluded that the device improves the user experience and has a good effect on heart sound collection and detection.
Highlights
The number of people dying from cardiovascular disease (CVD) is steadily rising, including one-third of all deaths globally in 2019, according to a paper in the Journal of the American College of Cardiology that reviewed the total magnitude of CVD burden and trends over 30 years around the world [1]
There are many noises generated during heart sound collection, for example: ambient noise; vibration of the microphone caused by chest vibration and the zipper of the vest is located in the middle of the chest causing the microphone in the pulmonary valve area and aortic valve area to not fit well to the skin, generating a lot of noise, etc
The microphone wrapped with holder was fixed on the corresponding position of the vest with reference to the heart sound auscultation position
Summary
The number of people dying from cardiovascular disease (CVD) is steadily rising, including one-third of all deaths globally in 2019, according to a paper in the Journal of the American College of Cardiology that reviewed the total magnitude of CVD burden and trends over 30 years around the world [1]. It means that the demand for medical equipment is constantly expanding, for medical equipment in hospitals, and for equipment that can monitor human physiological parameters in daily life. This kind of equipment does not require the patient to stay in the hospital all the time, but it can monitor various physiological parameters of the human body in real time, reflect the health of the human body, and provide accurate basis for clinical diagnosis [4,5,6,7] for doctors to make timely diagnosis and treatment, to improve the efficiency of the hospital's diagnosis of the patient's condition. The remote monitoring of physiological parameters has become a research hotspot in the field of biomedical engineering [8,9]
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