Double-microphone Bluetooth heart sound enhancing system of stethoscope

A stethoscope and dual microphone technology, applied in the field of signal processing, can solve problems such as misdiagnosis of diseases, affecting the collection of heart sound signals, and misjudgment, and achieve the effect of good heart condition

Inactive Publication Date: 2016-08-17
SICHUAN CHANGHONG ELECTRIC CO LTD
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AI Technical Summary

Problems solved by technology

[0003] However, many external factors can affect the acquisition of heart sound signals
Heart sound is a weak electrical signal and even very weak external noise can lead to misjudgment of pathological and physiological information in the signal, resulting in misdiagnosis of diseases

Method used

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  • Double-microphone Bluetooth heart sound enhancing system of stethoscope

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Embodiment Construction

[0019] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0020] Such as figure 1 The heart sound enhancement system of a kind of double microphone bluetooth stethoscope shown, it comprises the first microphone module 1, the second microphone module 5, audio codec module 2, digital signal processing module 3 and Bluetooth module 4; The first microphone module 1 faces The chest is set for collecting heart sound signals, and the second microphone module 5 is set toward the outside air for collecting noise signals; the audio codec module 2 is electrically connected with the first microphone module 1 and the second microphone module 5 respectively for collecting The received heart sound signal and noise signal are subjected to analog-to-digital conversion and amplified processing; the digital signal processing module 3 is electrically connected to the audio codec module 2, and is used to enhance the heart sound signal processed ...

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Abstract

The invention discloses a double-microphone Bluetooth heart sound enhancing system of a stethoscope. The double-microphone Bluetooth heart sound enhancing system of the stethoscope comprises a microphone module, an audio frequency encoding and decoding module, a digital signal processing module and a Bluetooth module, wherein the microphone module, the audio frequency encoding and decoding module, the digital signal processing module and the Bluetooth module are connected electrically; a first microphone module is arranged towards a chest, and is used for collecting a heart sound signal; a second microphone module is arranged towards the external air, and is used for collecting a noise signal; audio frequency encoding and decoding module is used for carrying out analog-to-digital conversion and aamplification processing on the collected heart sound signal and noise signal; the digital signal processing module is used for carrying out enhancement processing on the heart sound signal processed by the audio frequency encoding and decoding module, and selecting, according to a phonetic feature parameter, the heart sound signal in signals processed by the audio frequency encoding and decoding module; the Bluetooth module is used for sending the selected heart sound signal. By using the double-microphone Bluetooth heart sound enhancing system of the stethoscope, a doctor can hear a clearer signal, so as to better diagnose the state of a heart.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a heart sound enhancement system for a dual-microphone bluetooth stethoscope. Background technique [0002] Heart sound is the vibration caused by myocardial contraction and relaxation, valve opening and closing, and blood flow hitting the ventricular wall and arterial wall. It can most directly reflect the information related to heart disease. Therefore, heart sound detection has a great auxiliary role for clinicians in diagnosing heart disease. . [0003] However, many external factors can affect the acquisition of heart sound signals. Heart sound is a weak electrical signal and even very weak external noise can lead to misjudgment of pathological and physiological information in the signal, resulting in misdiagnosis of diseases. Therefore, it is very important to denoise the heart sound signal. Contents of the invention [0004] The present invention overcomes t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B7/04H04R1/46H04R3/00
CPCA61B7/04H04R1/46H04R3/00
Inventor 梁庆真黄凯刘传银
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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