CN105455842A - Intelligent auscultation system - Google Patents

Abstract

The invention relates to an intelligent auscultation system, which comprises an intelligent stethoscope listening head, a signal amplification circuit, a signal filtering processing circuit, an A/D (analog/digital) conversion circuit, a control circuit, a storage circuit, a playing circuit and a Bluetooth circuit, wherein the intelligent stethoscope listening head is connected with the control circuit; the head of the intelligent stethoscope comprises a piezoelectric film sensor or a pickup sheet; the intelligent stethoscope head, the signal amplifying circuit, the signal filtering processing circuit, the A/D conversion circuit and the control circuit are sequentially connected; the control circuit is respectively connected with the storage circuit, the playing circuit and the Bluetooth circuit. The invention has the beneficial effects that: the invention particularly relates to a system for integrally collecting, storing, transmitting and intelligently analyzing auscultation sounds, which can meet the requirements of clinical physical diagnosis, medical teaching, remote medical treatment and the like. The special analysis software is equipped, so that the functions of automatically comparing with a medical auscultation database and automatically obtaining reference clinical diagnosis can be realized; the invention can intelligently analyze the collected auscultation digital audio to obtain reference diagnosis.

Description

An intelligent auscultation system

technical field

The invention belongs to an auscultation system, in particular to an intelligent auscultation system.

Background technique

Cardiac auscultation is an important and economical method for the diagnosis of cardiovascular diseases, which cannot be replaced by any other examination. At the same time, heart auscultation is relatively difficult to learn. Usually, it is necessary to master the correct auscultation methods and skills, and have rich practical experience to make a correct diagnosis for patients with or suspected of having heart disease. Obviously, heart auscultation is a difficult point for both medical students and new doctors, and it is even more difficult for ordinary people to perform auscultation by themselves. The convenience, reliability, low price and practicality of medical equipment are an important development direction of medical equipment suitable for the characteristics of the Chinese population. Therefore, the research and development of intelligent heart-sound diagnostic equipment, so that family members can conduct basic initial diagnosis is a feasible method to effectively alleviate the difficulty and cost of medical treatment for the masses, and to achieve timely diagnosis and timely treatment. The traditional stethoscope has a single function and only completes the acquisition of auscultation sounds. It only uses a thin film pickup + earpiece to perform auscultation with the help of physical transmission. The sound effect is poor, and it does not have the functions of repeated listening, playback, storage, and transmission.

An electronic stethoscope is disclosed in the prior art, and the application number is CN201520277012.9, which includes a stethoscope head, a listening tube and earplugs connected in sequence, and a pickup is provided on the side of the stethoscope head for attaching to the body , the pickup is connected to the functional circuit board, the auscultation head is provided with a power supply circuit for power supply, the functional circuit board transmits the physiological sound detected by the pickup to the earplug after being amplified by the amplifier, the pickup is connected to the functional circuit board through an elastic piece, and the elastic piece The end away from the pickup is connected to the pressure sensor. The pressure sensor transmits the induced voltage signal to the amplifier for amplification. The amplified induced voltage signal enters the comparator and DSP. When the DSP monitors that the induced voltage signal reaches a preset value, it turns on the power amplifier and turns The sound of auscultation is output into the earplugs, and the electronic stethoscope can effectively protect the doctor's eardrum and improve the accuracy of diagnosis. However, only a simple recording or pickup function is realized, because the technology is relatively backward, the integration level is low, it does not have functions such as storage and wireless transmission, and it does not have the function of intelligent analysis and diagnosis, which cannot meet the growing technology and intelligence of the current society. need.

Contents of the invention

In order to solve the above-mentioned problems existing in the prior art, the present invention provides an intelligent auscultation system, which collects a specific cavity heart sound signal on the body surface of the subject through a microphone, and after a series of amplification and filtering processes, the heart sound The signal is transmitted to the control circuit, and the heart sound signal is collected through the microphone, and after amplification, filtering, and AD conversion, the analog signal is converted into a digital signal.

And the acquired digital signal is played and stored locally in the intelligent auscultation system. The acquired digital signal can also be transmitted to other devices via Bluetooth for analysis. The intelligent analysis circuit can compare the collected digital signal with the standard audio in the database to obtain a reference diagnosis.

The technical scheme adopted in the present invention is:

An intelligent auscultation system, which is improved in that: the system includes an intelligent stethoscope earpiece, a signal amplification circuit, a signal filter processing circuit, an A/D conversion circuit, a control circuit, a storage circuit, a playback circuit and a bluetooth circuit;

The intelligent stethoscope earpiece includes a piezoelectric film sensor or a pickup piece;

The earpiece of the intelligent stethoscope, the signal amplification circuit, the signal filter processing circuit, the A/D conversion circuit, and the control circuit are connected in sequence;

The control circuit is respectively connected with the storage circuit, the playback circuit and the bluetooth circuit.

Optionally, the earpiece of the intelligent stethoscope is used to collect the heart sound signal of the subject to be tested, and transmit the collected signal to the signal amplifying circuit.

Optionally, the input end of the signal amplifying circuit is connected to the output end of the earpiece of the intelligent stethoscope for preliminarily amplifying the analog electrical signal.

Optionally, the input end of the signal filtering processing circuit is connected to the output end of the signal amplification circuit.

Optionally, the input end of the A/D conversion circuit is connected to the output end of the signal filter processing circuit; the A/D conversion circuit converts the analog electrical signal processed by the signal filter processing circuit into a digital signal.

Optionally, the input end of the control circuit is connected to the output end of the A/D conversion circuit, and the control circuit filters the signal and conducts intelligent analysis for storage, playback or transmission through Bluetooth signals.

Optionally, the storage circuit receives the digital signal from the control circuit and stores it for storing the digital signal and pre-stored standard heart sound information and various heart sound pathological characteristic information.

Optionally, the playback circuit includes a digital-to-analog conversion circuit and an audio amplifier circuit, and the digital-to-analog conversion circuit is connected to the audio amplifier circuit; it is used to convert the digital signal sent by the control circuit into an analog signal and send it to the audio amplifier A circuit, the audio amplifier circuit is used for receiving and amplifying analog signals.

Optionally, the control circuit analyzes the pathological feature information of the heart sound included in the digital signal through intelligent analysis and compares it with the standard heart sound information and various pathological feature information of the heart sound stored in the storage circuit, and compares the result of the comparison A heart sound recording is generated and sent to a memory circuit.

Optionally, the power management circuit is used for power supply and charging of the power supply of the auscultation system.

The beneficial effects of the present invention are:

The present invention is specifically a system that integrates collection, storage, transmission, and intelligent analysis of auscultation sounds, and the system can satisfy clinical physical diagnosis, medical teaching, telemedicine, and the like. Equipped with special analysis software, it can automatically compare with the medical auscultation database and automatically obtain the reference clinical diagnosis function.

The product is small in size: Electronic technology has advanced by leaps and bounds in the past two years. The device can be made smaller;

Specific storage function: the acquired data can be stored for later use;

With data transmission function: data can be transmitted to other devices via bluetooth.

The collected auscultation digital audio can be intelligently analyzed to obtain a reference diagnosis.

Description of drawings

Fig. 1 is a schematic structural diagram of an intelligent auscultation system provided by the present invention.

detailed description

As shown in Figure 1, the present invention provides a kind of intelligent auscultation system, and system comprises intelligent stethoscope earpiece, signal amplifying circuit, signal filter processing circuit, A/D conversion circuit, control circuit, storage circuit, playback circuit and bluetooth circuit; The earpiece of the smart stethoscope includes a piezoelectric film sensor or a pickup piece; the earpiece of the smart stethoscope, the signal amplifier circuit, the signal filter processing circuit, the A/D conversion circuit, and the control circuit are connected in sequence; the control circuit is respectively connected to the storage circuit, the playback circuit and the Bluetooth circuit.

The earpiece of the intelligent stethoscope is used to collect the heart sound signal of the subject to be tested, and transmits the collected signal to the signal amplifying circuit.

The input end of the signal amplifying circuit is connected with the output end of the earpiece of the intelligent stethoscope, which is used to initially amplify the analog electrical signal;

The input end of the signal filter processing circuit is connected with the output end of the signal amplification circuit;

The input end of the A/D conversion circuit is connected with the output end of the signal filter processing circuit; the A/D conversion circuit converts the analog electric signal processed by the signal filter processing circuit into a digital signal.

The control circuit filters the signal and analyzes it intelligently, and then stores, plays or transmits it via bluetooth signal;

The storage circuit receives and stores the digital signal from the control circuit, and is used for storing the digital signal and pre-stored standard heart sound information and various pathological feature information of the heart sound. The storage circuit can collect the pathological characteristic information of the heart sound of the subject and update the data information in the storage circuit regularly or irregularly, so as to improve the recognition rate of the pathological characteristic information of the heart sound of the subject.

The Bluetooth circuit can transmit the acquired digital signal to other devices, including intelligent interactive devices such as smartphones, IPADs, PDAs and PCs, and realize the exchange and transmission of information and data through Bluetooth.

The playback circuit includes a digital-to-analog conversion circuit and an audio amplifier circuit. The digital-to-analog conversion circuit is connected to the audio amplifier circuit; it is used to convert the digital signal sent by the control circuit into an analog signal and send it to the audio amplifier circuit. The audio amplifier circuit is used for receiving and amplifying analog signal.

The control circuit analyzes the heart sound pathological feature information contained in the digital signal through intelligent analysis and compares it with the standard heart sound information and various heart sound pathological feature information pre-stored in the storage circuit, and generates a heart sound record from the comparison result and sends it to storage circuit. Their pathological features can be extracted, such as: amplitude, width, spacing, main and secondary waves, etc., and then different methods (such as pattern recognition methods, clustering methods or neural network methods) are used to analyze the acquired heart sound signals Classify for easy comparison.

The power management circuit is used for the power supply of the auscultation system and for charging the power supply.

This system can be used not only for the detection of daily patient auscultation, but also for the detection of fetal heart sounds in the uterus of pregnant women. It has a wide range of applications, simple operation, easy to carry, safe and efficient.

The present invention is not limited to the above-mentioned best implementation mode, anyone can draw other various forms of products under the inspiration of the present invention, but no matter make any changes in its shape or structure, all those with the same or similar features as the present application Approximate technical solutions all fall within the protection scope of the present invention.

Claims (10)

1. an intelligent auscultation system, is characterized in that: described system comprises Intelligent stethoscope can, signal amplification circuit, signal filtering treatment circuit, A/D change-over circuit, control circuit, memory circuit, playing circuit and Bluetooth circuit;

Described Intelligent stethoscope can comprises piezoelectric film sensor or pickup sheet;

Described Intelligent stethoscope can, signal amplification circuit, signal filtering treatment circuit, A/D change-over circuit, control circuit connect successively;

Described control circuit connects memory circuit, playing circuit and Bluetooth circuit respectively.

2. the intelligent auscultation system of one according to claim 1, is characterized in that: described Intelligent stethoscope can for gathering the cardiechema signals of person to be measured, by gather signal input signal amplifying circuit.

3. the intelligent auscultation system of one according to claim 1, is characterized in that: described signal amplification circuit input is connected with described Intelligent stethoscope can outfan, for the preliminary amplified analog signal of telecommunication.

4. the intelligent auscultation system of one according to claim 1, is characterized in that: described signal filtering treatment circuit input is connected with described signal amplification circuit outfan.

5. the intelligent auscultation system of one according to claim 1, is characterized in that: described A/D change-over circuit input is connected with described signal filtering treatment circuit outfan; Analog electrical signal after signal filtering processing circuit processes is converted to digital signal by described A/D change-over circuit.

6. the intelligent auscultation system of one according to claim 1, it is characterized in that: described control circuit input is connected with described A/D change-over circuit outfan, signal is carried out filtering and by intellectual analysis, carries out storing, playing or pass through Bluetooth signal transmission by described control circuit.

7. the intelligent auscultation system of one according to claim 1, is characterized in that: described memory circuit receives the digital signal of described control circuit and stores, for storing digital signal and the standard heart sound information prestored and all kinds of hear sounds pathological characters information.

8. the intelligent auscultation system of one according to claim 1, it is characterized in that: described playing circuit comprises D/A converting circuit and audio amplifier circuit, described D/A converting circuit is connected with audio amplifier circuit; Digital signal for being sent by described control circuit is converted into analogue signal and is sent to audio amplifier circuit, and described audio amplifier circuit is used for reception, amplified analog signal.

9. the intelligent auscultation system of one according to claim 1, it is characterized in that: the hear sounds pathological characters information analysis that digital signal is comprised by intellectual analysis by described control circuit by the standard heart sound information that prestores in itself and memory circuit and the comparison of all kinds of hear sounds pathological characters information, and comparison result is generated phonocardiogram and is sent to memory circuit.

10. the intelligent auscultation system of one according to claim 1, is characterized in that: described electric power management circuit is used for the Power supply of auscultation system and is power source charges.