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Intelligent heart sound auscultation and recognition system based on Android

A heart sound auscultation and recognition system technology, applied in stethoscope and other directions, can solve the problems such as the inability to conveniently complete the heart sound signal acquisition and heart sound signal analysis and processing, the large size of the computer, and the reduction of the practicability of heart sound identification. method, easy to judge the effect

Inactive Publication Date: 2013-10-09
HANGZHOU DIANZI UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

Due to the large size of the computer, it is not conducive to carry around, so the user cannot conveniently complete the collection of heart sound signals and use the heart sound signals for subsequent analysis and processing, which further reduces the practicability of heart sound identification

Method used

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  • Intelligent heart sound auscultation and recognition system based on Android
  • Intelligent heart sound auscultation and recognition system based on Android
  • Intelligent heart sound auscultation and recognition system based on Android

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Embodiment Construction

[0033] Such as figure 1 Shown is the hardware structure diagram of the heart sound collection device. The electret microphone and the medical stethoscope head constitute a heart sound sensor for collecting heart sound signals. In the process of collecting heart sound signals, the noise caused by friction between the auscultation head and clothes, breathing and thermal noise of the circuit cannot be effectively avoided. The effective frequency range of the heart sound signal is from 30 Hz to 500 Hz, so the heart sound signal received by the heart sound sensor needs to pass through a 30 Hz high-pass filter and a 500 Hz low-pass filter. The filtered heart sound signal is converted from an analog signal to a digital signal through the A / D conversion of the main control chip. The main control chip circuit is composed of dsPIC33FJ128MC706 chip of Microchip (American Microchip Technology Company), and its main functions are operations such as sampling, A / D conversion, and power man...

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Abstract

The invention relates to an intelligent heart sound auscultation and recognition system based on Android. An existing system is large in size and inconvenient to carry. The system comprises a heart sound collecting device and an Android mobile phone application client. The heart sound collecting hardware device comprises an electret condenser microphone, a 30Hz-500HZ filter, a main control chip, a Bluetooth chip module and an amplification circuit. The system application achieving heart sound collection, storage and identity recognition in an Android system comprises a Bluetooth matching module, a user register module, a user identification module and a system management module. Collection, storage and display of heart sound signals are completed by means of an Android intelligent mobile phone, and the heart sound signal collection process of a user is simplified.

Description

technical field [0001] The invention belongs to the technical field of heart sound signal processing and transmission, and relates to an Android-based intelligent heart sound auscultation and recognition system. Background technique [0002] Heart sound signal is one of the very important physiological characteristics of the human body, reflecting the mechanical movement status of the cardiovascular system, including the physiological and pathological information of each part of the heart itself and the interaction between them. The method of auscultation using heart sounds has been widely used in medical diagnosis. High-quality acquisition of heart sound signals is of great significance for subsequent pathological analysis based on heart sounds. [0003] Heart sound signals have completely different characteristics in different people and have extremely high stability, which can be used as identification characteristics of biometric technology. Different from traditional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B7/04
Inventor 赵治栋骆懿何圣康李静佳
Owner HANGZHOU DIANZI UNIV
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