阅读说明：本技术 一种肺部结节患者用共享听诊器诊断系统 (Pulmonary nodule patient uses sharing stethoscope diagnostic system ) 是由 王林洋 戴林枫 王璐 于 2021-07-08 设计创作，主要内容包括：本发明涉及听诊器技术领域,尤其涉及一种肺部结节患者用共享听诊器诊断系统,解决了现有技术中听诊器只能检测一项人体器官的声音参数,应用范围受限的问题。一种肺部结节患者用共享听诊器诊断系统,包括声音传感器,用于采集人体的声音数据；模式转换开关,用于切换心音、肺音、肠鸣音等不同的工作模式,其中,听诊器系统具有至少两个工作模式,在不同工作模式中,听诊器系统的滤波频率范围不同；前置放大电路,用于将采集的声音数据进行放大；将模拟输入信号通过模数转换为数字信号。本发明解决了听诊器只能检测一项人体器官的声音参数导致应用范围受限的问题,达到了通过听诊器检测多项人体器官的声音参数的效果。(The invention relates to the technical field of stethoscopes, in particular to a shared stethoscope diagnosis system for pulmonary nodule patients, and solves the problems that the stethoscope in the prior art can only detect the sound parameters of one human organ and the application range is limited. A shared stethoscope diagnostic system for pulmonary nodule patients includes a sound sensor for collecting sound data of a human body; the stethoscope system comprises a mode conversion switch, a stethoscope storage device and a stethoscope storage device, wherein the mode conversion switch is used for switching different working modes such as heart sounds, lung sounds and bowel sounds, the stethoscope system has at least two working modes, and the filtering frequency ranges of the stethoscope system are different in the different working modes; the prepositive amplifying circuit is used for amplifying the collected sound data; analog input signals are analog-to-digital converted to digital signals. The invention solves the problem that the stethoscope can only detect the sound parameters of one human organ, thereby causing the limited application range, and achieves the effect of detecting the sound parameters of a plurality of human organs by the stethoscope.)

1. A shared stethoscope diagnostic system for pulmonary nodule patients comprises a sound sensor, a stethoscope storage device and a stethoscope storage device, wherein the sound sensor is used for collecting sound data of a human body; a mode switch for switching to a measurement mode corresponding to a frequency of the sound data, wherein the stethoscope system has at least two measurement modes in which filtering frequency ranges of the stethoscope system are different; the prepositive amplifying circuit is used for amplifying the collected sound data;

the stethoscope head is characterized by also comprising a power supply generating circuit, a stethoscope head, a primary amplifying circuit, a band-pass filter circuit, a power frequency trap circuit, a main amplifying and voltage biasing circuit and a signal processing module;

the power supply generating circuit is used for supplying power to the primary amplifying circuit and the signal processing module;

the auscultation head is used for contacting with a human body and sending a heart sound signal or a fetal sound signal of the human body to the primary amplifying circuit;

the primary amplifying circuit is used for amplifying the acquired signal and sending the signal to the band-pass filter circuit;

the band-pass filter circuit is used for carrying out noise reduction on the acquired signal and sending the signal to the power frequency trap circuit;

the power frequency trap circuit is used for carrying out interference suppression on the collected signals and sending the signals to the main amplifying circuit;

and the main amplification and voltage bias circuit is used for amplifying the acquired signal, biasing the amplified voltage value to a set voltage value and sending the set voltage value to the signal processing module.

2. The system of claim 1, further comprising: and the analog-to-digital conversion circuit is used for performing analog-to-digital conversion on the amplified data to obtain a digital signal.

3. The system of claim 1, further comprising: and the noise reduction circuit is used for denoising the digital signal to obtain denoised data.

4. The system of claim 1, further comprising: and the post-stage amplifying circuit is used for amplifying the de-noising data to obtain post-stage amplifying data.

5. The system of claim 1, wherein the sound sensor collects human body sound data comprising: heart sound, lung sound, heart-lung sound expansion sound, bowel sound.

6. The system of claim 1, wherein the sound sensor is located in a stethoscope head of the stethoscope system.

7. The system of claim 1, further comprising: the LED indicator light is used for indicating the current measuring mode of the stethoscope system, the stethoscope system further comprises a wired data receiving device or a wireless data receiving device, and the wired data receiving device or the wireless data receiving device is used for receiving the sound data of the human body in a wired or wireless mode, wherein the wired data receiving device comprises any one of the following components: cell-phone, computer, recording pen, 3.5mm earphone, wireless data receiving arrangement includes following arbitrary one: cell-phone, computer, bluetooth headset.

Technical Field

The invention relates to the technical field of stethoscopes, in particular to a shared stethoscope diagnosis system for pulmonary nodule patients.

Background

The traditional stethoscope is difficult to capture weak but very important sound signals emitted by internal organs and tissues of a human body, cannot objectively store transient characteristic sounds, has high requirement on the on-site subjective identification capability of a user, and is not beneficial to communication with patients, family members of the patients and other medical personnel.

WillemEinthoven develops a phonocardiograph, and Forgacs proposes a method for displaying human breath sounds in an image mode by using a breath sound picture. By means of signal processing technology, the change of the strength and frequency of heart sound and breath sound along with time can be obtained. However, since the standardization of phonocardiograms and respiratory sound icons is relatively slow, human voice objectivization, standardized detection and analysis techniques have attracted attention.

The electronic stethoscope can be used for standardizing, objectively and digitally detecting and analyzing human body sound data, allows repeated listening, can be automatically measured by a user, and has important application value in the aspects of clinical diagnosis, remote consultation, medical teaching, health management and the like.

Generally speaking, the frequency range of heart sounds is 20-400Hz, the frequency range of lung sounds is 30-3000Hz, and the frequency range of bowel sounds is 60-1200Hz, because the frequency of each viscera and tissue in the human body is different. Common electronic stethoscopes are special devices, and corresponding circuit parameters need to be designed according to different detection frequency ranges, so that only heart sounds, lung sounds and the like can be detected respectively. The stethoscope in the prior art can only detect the sound parameters of one human organ, and the application range is limited.

Disclosure of Invention

The invention aims to provide a shared stethoscope diagnosis system for pulmonary nodule patients, which solves the problems that the stethoscope in the prior art can only detect the sound parameters of one human organ and the application range is limited.

In order to achieve the purpose, the invention adopts the following technical scheme:

a shared stethoscope diagnostic system for pulmonary nodule patients includes a sound sensor for collecting sound data of a human body; the stethoscope system comprises a mode conversion switch, a stethoscope storage device and a stethoscope storage device, wherein the mode conversion switch is used for switching different working modes such as heart sounds, lung sounds and bowel sounds, the stethoscope system has at least two working modes, and the filtering frequency ranges of the stethoscope system are different in the different working modes; the prepositive amplifying circuit is used for amplifying the collected sound data; converting the analog input signal into a digital signal through analog-to-digital conversion, and performing noise reduction processing; after the post-amplification treatment, the data can be transmitted to a computer PC, a panel PAD, a mobile phone, a recording pen, a 3.5mm earphone and the like in a wired mode, or can be transmitted to the computer PC, the panel PAD, the mobile phone, a Bluetooth earphone and the like in a wireless mode;

the stethoscope head is characterized by also comprising a power supply generating circuit, a stethoscope head, a primary amplifying circuit, a band-pass filter circuit, a power frequency trap circuit, a main amplifying and voltage biasing circuit and a signal processing module;

the power supply generating circuit is used for supplying power to the primary amplifying circuit and the signal processing module;

the auscultation head is used for contacting with a human body and sending a heart sound signal or a fetal sound signal of the human body to the primary amplifying circuit;

the primary amplifying circuit is used for amplifying the acquired signal and sending the signal to the band-pass filter circuit;

the band-pass filter circuit is used for carrying out noise reduction on the acquired signal and sending the signal to the power frequency trap circuit;

the power frequency trap circuit is used for carrying out interference suppression on the collected signals and sending the signals to the main amplifying circuit;

and the main amplification and voltage bias circuit is used for amplifying the acquired signal, biasing the amplified voltage value to a set voltage value and sending the set voltage value to the signal processing module.

Preferably, the stethoscope system further includes: and the analog-to-digital conversion circuit is used for performing analog-to-digital conversion on the amplified data to obtain a digital signal.

Preferably, the stethoscope system further includes: and the noise reduction circuit is used for denoising the digital signal to obtain denoised data.

Preferably, the stethoscope system further includes: and the post-stage amplifying circuit is used for amplifying the de-noising data to obtain post-stage amplifying data.

Preferably, the sound data of the human body collected by the sound sensor includes: heart sound, lung sound, heart-lung sound expansion sound, bowel sound.

Preferably, the sound sensor is located in a stethoscope head of the stethoscope system.

Preferably, the stethoscope system further includes: the LED indicator light is used for indicating the current measuring mode of the stethoscope system, the stethoscope system further comprises a wired data receiving device or a wireless data receiving device, and the wired data receiving device or the wireless data receiving device is used for receiving the sound data of the human body in a wired or wireless mode, wherein the wired data receiving device comprises any one of the following components: cell-phone, computer, recording pen, 3.5mm earphone, wireless data receiving arrangement includes following arbitrary one: cell-phone, computer, bluetooth headset.

The invention has at least the following beneficial effects:

the voice sensor is used for acquiring voice data of a human body; a mode switch for switching to a measurement mode corresponding to a frequency of the sound data, wherein the stethoscope system has at least two measurement modes in which filtering frequency ranges of the stethoscope system are different; the prepositive amplifying circuit is used for amplifying the collected sound data, solves the problem that the stethoscope can only detect the sound parameters of one human organ, so that the application range is limited, and achieves the effect of detecting the sound parameters of a plurality of human organs through the stethoscope.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of the structure of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

Referring to fig. 1, a shared stethoscope diagnostic system for a pulmonary nodule patient includes the following components: the sound sensor is used for acquiring sound data of a human body; a mode switch for switching to a measurement mode corresponding to a frequency of the sound data, wherein the stethoscope system has at least two measurement modes in which a filtering frequency range of the stethoscope system is different; and the prepositive amplifying circuit is used for amplifying the collected sound data. The embodiment of the invention is used for acquiring the voice data of a human body through the voice sensor; a mode switch for switching to a measurement mode corresponding to a frequency of the sound data, wherein the stethoscope system has at least two measurement modes in which filtering frequency ranges of the stethoscope system are different; the prepositive amplifying circuit is used for amplifying the collected sound data, solves the problem that the stethoscope can only detect the sound parameters of one human organ, so that the application range is limited, realizes the mode conversion function through the mode conversion switch, can detect the sounds of various human organs through one stethoscope, and achieves the effect of detecting the sound parameters of various human organs through the stethoscope.

The stethoscope head is characterized by also comprising a power supply generating circuit, a stethoscope head, a primary amplifying circuit, a band-pass filter circuit, a power frequency trap circuit, a main amplifying and voltage biasing circuit and a signal processing module;

the power supply generating circuit is used for supplying power to the primary amplifying circuit and the signal processing module;

the auscultation head is used for contacting with a human body and sending a heart sound signal or a fetal sound signal of the human body to the primary amplifying circuit;

the primary amplifying circuit is used for amplifying the acquired signal and sending the signal to the band-pass filter circuit;

the band-pass filter circuit is used for carrying out noise reduction on the acquired signal and sending the signal to the power frequency trap circuit;

the power frequency trap circuit is used for carrying out interference suppression on the collected signals and sending the signals to the main amplifying circuit;

and the main amplification and voltage bias circuit is used for amplifying the acquired signal, biasing the amplified voltage value to a set voltage value and sending the set voltage value to the signal processing module.

In the embodiment of the invention, the stethoscope can be used as a multi-mode electronic stethoscope, wherein the sound sensor can be a high-sensitivity sound sensor.

Example two

Referring to fig. 1, a shared stethoscope diagnostic system for a pulmonary nodule patient, the stethoscope system further comprising: and the analog-to-digital conversion circuit is used for performing analog-to-digital conversion on the amplified data to obtain a digital signal.

Further, the stethoscope system further includes: and the noise reduction circuit is used for denoising the digital signal to obtain denoised data.

Further, the stethoscope system further includes: and the post-stage amplifying circuit is used for amplifying the de-noising data to obtain post-stage amplifying data.

Further, the sound data of the human body collected by the sound sensor includes: heart sound, lung sound, heart-lung sound expansion sound, bowel sound.

Further, the sound sensor is located in the stethoscope head of the stethoscope system, and the sound sensor with high sensitivity can be integrated with the medical stethoscope head.

Further, the stethoscope system further includes: the LED indicator light is used for indicating the current measuring mode of the stethoscope system, the stethoscope system further comprises a wired data receiving device or a wireless data receiving device, and the wired data receiving device or the wireless data receiving device is used for receiving the sound data of the human body in a wired or wireless mode, wherein the wired data receiving device comprises any one of the following components: cell-phone, computer, recording pen, 3.5mm earphone, wireless data receiving arrangement includes following arbitrary one: cell-phone, computer, bluetooth headset.

The multi-mode electronic stethoscope can utilize a high-sensitivity sound sensor to collect human body sound data, the human body sound data are subjected to preamplification processing, analog input signals are converted into digital signals through analog-digital conversion, after noise reduction processing is carried out, different working modes such as heart sounds, lung sounds, heart-lung sounds and bowel sounds are achieved through mode conversion, after post-amplification processing, the data can be transmitted to a computer PC, a panel PAD, a mobile phone, a voice recording pen, a 3.5mm earphone and the like in a wired mode, and the data can be transmitted to the computer PC, the panel PAD, the mobile phone, a Bluetooth earphone and the like in a wireless mode.

The stethoscope of the embodiment of the invention supports the sound recording pen to record the detected sound signals such as heart sound, lung sound, cardiopulmonary sound, bowel sound and the like. The sound signal after audio amplification and noise reduction processing may be amplified by a post-stage power amplifier, but not limited thereto. If the signal is amplified by a rear-stage power amplifier, a 3.5mm earphone can be directly driven to carry out on-site auscultation. The filtering parameters can be adjusted through the signal processing unit, and filtering frequency ranges required by different working modes of heart sound, lung sound, heart-lung sound expansion, bowel sounds and the like are provided. The working mode of the electronic stethoscope can be switched through key selection, and different working modes are prompted. After the post-amplification treatment, the data can be transmitted to a computer PC, a panel PAD, a mobile phone, a recording pen, a 3.5mm earphone and the like in a wired mode, or can be transmitted to the computer PC, the panel PAD, the mobile phone, a Bluetooth earphone and the like in a wireless mode. And a ripple suppression circuit is utilized to provide working voltage for the DSP and the sound sensor through a low-dropout linear stabilizing circuit. The volume of the detection volume can be adjusted. Different power supply modes such as an external power supply, a dry battery, a lithium ion battery, a button battery and the like can be selected. Environmental noise (such as sudden impact noise of door closing, glass cullet and the like) can be accurately suppressed. The maximum gain of the output signal can be limited, and the output signal can be controlled within a proper auscultation range. The real-time processing capability is strong, and the signal processing delay is less than 20 mS. The signal amplification capacity is strong and can reach more than 50 dB. The internal configuration is adjustable, a GPIO interface is provided, and peripheral control such as volume adjustment, low-voltage alarm, LED lamp control and the like is realized.

Fig. 1 is a schematic diagram of a stethoscope system according to an embodiment of the present invention, and as shown in fig. 1, a signal processing procedure of the system includes: the high-sensitivity microphone collects any one of human body sounds such as heart sounds, breath sounds, bowel sounds and the like, the microphone transmits analog signals to the digital signal processing module, the analog-to-digital converter converts the analog signals into digital signals, the digital signals are subjected to active noise control, digital filtering, gain control and the like, the digital signals (PWM) can be transmitted to external equipment such as a computer, a mobile phone or a Bluetooth headset in a wired or wireless transmission mode to store or display data detection results, the digital signals can be played in the headset after being filtered or buffered by the filter/buffer, and a user can hear the collected human body sounds such as the heart sounds, the breath sounds, the bowel sounds and the like in the headset.

In the embodiment of the invention, after sounds of different body parts are detected, the corresponding measurement mode can be selected according to the wave band of the collected sound frequency, so that the detection precision of the stethoscope can meet the specific measurement part, therefore, a plurality of measurement frequency wave bands are preset, and then the measurement mode is automatically or manually determined according to the specific measurement part, so that the multi-mode integration of the stethoscope can be realized.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.