CN105852903A - Double-microphone Bluetooth heart sound enhancing system of stethoscope - Google Patents
Double-microphone Bluetooth heart sound enhancing system of stethoscope Download PDFInfo
- Publication number
- CN105852903A CN105852903A CN201610345760.5A CN201610345760A CN105852903A CN 105852903 A CN105852903 A CN 105852903A CN 201610345760 A CN201610345760 A CN 201610345760A CN 105852903 A CN105852903 A CN 105852903A
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- module
- microphone
- bluetooth
- heart sound
- decoding
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B7/00—Instruments for auscultation
- A61B7/02—Stethoscopes
- A61B7/04—Electric stethoscopes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Life Sciences & Earth Sciences (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Multimedia (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
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
The present invention relates to signal processing technology field, the heart sound being specifically related to diamylose gram bluetooth stethoscope strengthens system
System.
Background technology
Heart sound is myocardial contraction diastole, valve opens and closes and blood flowing is clashed into ventricle wall and arterial wall etc. and caused
Vibration, can directly reflect the information relevant with heart disease, therefore clinician is examined by heart sound detection
Disconnected heart disease has the biggest assosting effect.
But, many extraneous factors can affect the collection of cardiechema signals.Heart sound is that weak electric signal is down to the most weak
External noise lead to the false judgment of the pathology in signal and physiologic information, thus cause the mistake of disease
Examine.Therefore the denoising to cardiechema signals is extremely important.
Summary of the invention
Instant invention overcomes many extraneous factors in prior art and can affect the deficiency of heart sound signal acquisition, it is provided that
A kind of filter the noise mixed in heart sound gatherer process, by pure cardiechema signals output, thus enable the clinician to
The heart sound of the diamylose gram bluetooth stethoscope assessing heart disease more accurately strengthens system.
For achieving the above object, the present invention is by the following technical solutions:
The heart sound of a kind of gram of bluetooth stethoscope strengthens system, and it includes the first microphone module, second microphone
Module, audio encoding and decoding module, digital signal processing module and bluetooth module；
Described first microphone module is arranged towards chest, is used for gathering cardiechema signals, described second microphone
Module is arranged towards extraneous air, is used for gathering noise signal；
Described audio encoding and decoding module electrically connects with the first microphone module and second microphone module respectively,
Analog digital conversion and processing and amplifying is carried out for the cardiechema signals that will collect and noise signal；
Described digital signal processing module electrically connects with audio encoding and decoding module, for by audio encoding and decoding
Cardiechema signals after resume module carries out enhancement process, and by speech characteristic parameter to audio encoding and decoding mould
After block process, the cardiechema signals in signal selects；
Described bluetooth module electrically connects with digital signal processing module, for being carried out by the cardiechema signals filtered out
Send.
Further technical scheme is, described bluetooth module uses bluetooth 4.1 agreement to be transmitted.
The technical program uses dual microphone to gather echo signal and noise respectively, then passes through blind source separation algorithm
Echo signal is carried out denoising, picks out echo signal therein by speech characteristic parameter the most again,
Eventually through bluetooth, echo signal is exported.
Meanwhile, by bluetooth 4.1 protocol transmission data in the technical program, the transmission of 64kpbs can be realized with volume
Speed, lossless reduction cardiechema signals.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention has miniaturization, intelligent and portable feature, and doctor can be allowed to hear relatively sharp letter
Number, thus preferably Diagnosing Cardiac situation.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the heart sound enhancing system of the diamylose gram bluetooth stethoscope of an embodiment of the present invention.
As it is shown in figure 1, wherein corresponding reference is entitled:
1 first microphone module, 2 audio encoding and decoding modules, 3 digital signal processing modules, 4 bluetooth modules, 5
Second microphone module.
Detailed description of the invention
The present invention is further elaborated below in conjunction with the accompanying drawings.
The heart sound of a kind of diamylose gram bluetooth stethoscope as shown in Figure 1 strengthens system, and it includes the first mike mould
Block 1, second microphone module 5, audio encoding and decoding module 2, digital signal processing module 3 and bluetooth mould
Block 4；First microphone module 1 is arranged towards chest, is used for gathering cardiechema signals, second microphone module 5 court
Arrange to extraneous air, be used for gathering noise signal；Audio encoding and decoding module 2 respectively with the first mike mould
Block 1 and second microphone module 5 electrically connect, for the cardiechema signals collected and noise signal are carried out modulus
Conversion and processing and amplifying；Digital signal processing module 3 electrically connects with audio encoding and decoding module 2, and being used for will
Cardiechema signals after audio encoding and decoding module 2 processes carries out enhancement process, and by speech characteristic parameter to sound
Frequently after coding and decoding module 2 processes, the cardiechema signals in signal selects；At bluetooth module 4 and digital signal
Reason module 3 electrically connects, and for being transmitted by the cardiechema signals filtered out, bluetooth module 4 uses bluetooth 4.1 to assist
View is transmitted.
The blind source separation method included in digital signal processing module 3 is a kind of Independent component analysis, i.e.
FastICA algorithm, time complexity and the space complexity of this algorithm are the highest, existing Digital Signal Processing
The level of module 3 is capable of, and effect is preferable.The core algorithm of speech characteristic parameter selects MFCC parameter
As feature, pattern match uses support vector machine, is the identification model more commonly used.Support vector machine mould
Type is that a large amount of normal and pathology heart sound the training by long-term acquisition obtains.
The essence of the present invention is described in detail by above detailed description of the invention, but can not be to the guarantor of the present invention
The scope of protecting limits, it should be apparent that, under the enlightenment of the present invention, the art those of ordinary skill
Many improvement and modification can also be carried out, it should be noted that these improve and modify all to fall the present invention's
Within claims.
Claims (2)
1. the heart sound of a diamylose gram bluetooth stethoscope strengthens system, it is characterised in that it includes the first mike
Module (1), second microphone module (5), audio encoding and decoding module (2), Digital Signal Processing
Module (3) and bluetooth module (4)；
Described first microphone module (1) is arranged towards chest, is used for gathering cardiechema signals, described second wheat
Gram wind module (5) is arranged towards extraneous air, is used for gathering noise signal；
Described audio encoding and decoding module (2) respectively with the first microphone module (1) and second microphone mould
Block (5) electrically connects, for the cardiechema signals collected and noise signal are carried out analog digital conversion and put
Big process；
Described digital signal processing module (3) electrically connects with audio encoding and decoding module (2), for by sound
Frequently the cardiechema signals after coding and decoding module (2) processes carries out enhancement process, and is joined by phonetic feature
Several audio encoding and decoding module (2) is processed after cardiechema signals in signal select；
Described bluetooth module (4) electrically connects with digital signal processing module (3), for the heart that will filter out
Tone signal is transmitted.
The most according to claim 1, it is characterised in that described bluetooth module (4) uses bluetooth 4.1 to assist
View is transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345760.5A CN105852903A (en) | 2016-05-23 | 2016-05-23 | Double-microphone Bluetooth heart sound enhancing system of stethoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610345760.5A CN105852903A (en) | 2016-05-23 | 2016-05-23 | Double-microphone Bluetooth heart sound enhancing system of stethoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105852903A true CN105852903A (en) | 2016-08-17 |
Family
ID=56635701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610345760.5A Pending CN105852903A (en) | 2016-05-23 | 2016-05-23 | Double-microphone Bluetooth heart sound enhancing system of stethoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105852903A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106419953A (en) * | 2016-09-26 | 2017-02-22 | 珠海爱珂索移动医疗科技有限公司 | Wireless auscultation system based on double-frequency collection and vibration reduction |
| CN107348971A (en) * | 2017-08-17 | 2017-11-17 | 上海交通大学 | A kind of heart disease screening system based on heart sound detection and machine learning algorithm |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102512138A (en) * | 2011-11-24 | 2012-06-27 | 胡建斌 | Cardiac sound monitoring and early warning method |
| CN202749088U (en) * | 2012-08-08 | 2013-02-20 | 滨州学院 | Voice reinforcing system using blind source separation algorithm |
| CN103479429A (en) * | 2013-08-29 | 2014-01-01 | 无锡慧思顿科技有限公司 | Heart comprehensive detection equipment based on heart sounds and electrocardiograms |
| WO2014163443A1 (en) * | 2013-04-05 | 2014-10-09 | Samsung Electronics Co., Ltd. | Electronic stethoscope apparatus, automatic diagnostic apparatus and method |
| CN104581516A (en) * | 2013-10-15 | 2015-04-29 | 清华大学 | Dual-microphone noise reduction method and device for medical acoustic signals |
| CN104706321A (en) * | 2015-02-06 | 2015-06-17 | 四川长虹电器股份有限公司 | MFCC heart sound type recognition method based on improvement |
-
2016
- 2016-05-23 CN CN201610345760.5A patent/CN105852903A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102512138A (en) * | 2011-11-24 | 2012-06-27 | 胡建斌 | Cardiac sound monitoring and early warning method |
| CN202749088U (en) * | 2012-08-08 | 2013-02-20 | 滨州学院 | Voice reinforcing system using blind source separation algorithm |
| WO2014163443A1 (en) * | 2013-04-05 | 2014-10-09 | Samsung Electronics Co., Ltd. | Electronic stethoscope apparatus, automatic diagnostic apparatus and method |
| CN103479429A (en) * | 2013-08-29 | 2014-01-01 | 无锡慧思顿科技有限公司 | Heart comprehensive detection equipment based on heart sounds and electrocardiograms |
| CN104581516A (en) * | 2013-10-15 | 2015-04-29 | 清华大学 | Dual-microphone noise reduction method and device for medical acoustic signals |
| CN104706321A (en) * | 2015-02-06 | 2015-06-17 | 四川长虹电器股份有限公司 | MFCC heart sound type recognition method based on improvement |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106419953A (en) * | 2016-09-26 | 2017-02-22 | 珠海爱珂索移动医疗科技有限公司 | Wireless auscultation system based on double-frequency collection and vibration reduction |
| CN107348971A (en) * | 2017-08-17 | 2017-11-17 | 上海交通大学 | A kind of heart disease screening system based on heart sound detection and machine learning algorithm |
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Application publication date: 20160817 |
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