Electronic Stethoscope with Active Noise Cancellation and Assisted Diagnostics

Abstract

The invention discloses an electronic stethoscope with active noise reduction and auxiliary diagnosis functions, and relates to electronic stethoscopes. The electronic stethoscope comprises an auscultation head, an audio processing circuit, a liquid crystal display screen, a button, a microprocessor control circuit, earphones, a switch and an SD card. The auscultation head is provided with a built-in sound collection channel and a built-out sound collection channel. The input end of the audio processing circuit is connected with the built-in sound collection channel and the built-out sound collection channel of the auscultation head. The liquid crystal display screen is used for displaying the working state of the electronic stethoscope. The button is used for driving the electronic stethoscope to enter a recording mode. The output end of the microprocessor control circuit is connected with the input end of the audio processing circuit and the input end of the liquid crystal display screen. The input end of the microprocessor control circuit is connected with the button, the output end of the audio processing circuit and the output end of the liquid crystal display screen. The earphones are connected with the output end of the audio processing circuit. The switch is connected with a power source. The SD card is connected with the audio processing circuit and the microprocessor control circuit.

Description

technical field [0001] The present invention relates to electronic stethoscopes. In particular, it involves the use of binaural ANC algorithms to improve the quality of auscultation, the use of statistical and machine learning algorithms to identify the health status of lung sounds, and an electronic stethoscope with active noise reduction and auxiliary diagnostic functions for auxiliary diagnosis. Background technique [0002] In order to diagnose the health status of the lungs, auscultation with a stethoscope is currently the main method that is simple, effective and inexpensive. On the one hand, the traditional stethoscope uses a physical conduction mechanism, the sound is weak, susceptible to interference, and can be heard but not seen when used. The auscultation data of the tested person cannot be saved, and cannot be used for comparison, reference and analysis of re-diagnosis; On the one hand, due to the obvious external interference, the noise of the auscultation env...

AI Technical Summary

Problems solved by technology

The shortcoming of this device is that although it can eliminate the interference noise introduced by the auscultation head due to friction, movement or impact, it does not process the external environment such as the sound of people speaking, the sound of medical equipment working or other unpredictable interference noise from the outside world; and use It requires users to have standardized auscultation actions and operations, which will inevitably cause discomfort to older doctors who have formed the habit of auscultation.

In addition, it is worth mentioning that the current domestic patents are more limited to the treatment of the noise introduced by the friction or collision of the stethoscope head, and there are very few electronic stethoscope patents that can reduce or suppress the large external noise interference.

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