CN104783834B - A kind of electronic auscultation device - Google Patents
A kind of electronic auscultation device Download PDFInfo
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- CN104783834B CN104783834B CN201510217885.5A CN201510217885A CN104783834B CN 104783834 B CN104783834 B CN 104783834B CN 201510217885 A CN201510217885 A CN 201510217885A CN 104783834 B CN104783834 B CN 104783834B
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- 238000002555 auscultation Methods 0.000 title claims abstract description 53
- 230000003321 amplification Effects 0.000 claims abstract description 7
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 7
- 230000005236 sound signal Effects 0.000 claims description 5
- 210000001699 lower leg Anatomy 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 210000003128 head Anatomy 0.000 abstract description 21
- 210000003454 tympanic membrane Anatomy 0.000 abstract description 4
- 230000006870 function Effects 0.000 description 10
- 210000004072 lung Anatomy 0.000 description 3
- 210000001835 viscera Anatomy 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 208000009205 Tinnitus Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 231100000886 tinnitus Toxicity 0.000 description 1
Abstract
The invention discloses a kind of electronic auscultation device, it includes the auscultation head being sequentially connected with, listening tube and earplug, the side for being used to attach body of the auscultation head is provided with sound pick-up, the sound pick-up is connected with function circuit board, the power module for power supply is provided with the auscultation head, the physiological sound that the sound pick-up is detected is transferred to the earplug by the function circuit board after amplifier amplifies, the sound pick-up is connected by elastic component with the function circuit board, one end of the remote sound pick-up of the elastic component is connected on pressure sensor, induced voltage signal is passed to the amplifier and amplified by the pressure sensor, the induced voltage signal after amplification enters comparator and DSP, the DSP is monitored when the induced voltage signal reaches preset value and is opened power amplifier, and auscultated sound is output in earplug.The electronic auscultation device of the present invention can effectively protect doctor's ear-drum, and can improve diagnostic accuracy.
Description
Technical field
The present invention relates to technical field of medical instruments, more particularly to a kind of electronic auscultation device.
Background technology
Stethoscope is the diagnostic tool that doctor commonly uses, and traditional acoustic stethoscope is simple in construction, antijamming capability is poor, examines
It is disconnected not accurate enough.With the progress of electronic technology, electronic auscultation device with its diagnosis is accurate, noise resistance interference performance is relatively strong and progressively
It is widely used.But in the circuit of existing electronic auscultation device, typically it is both needed to set amplifier, the amplifier can detect auscultation head
Survey sound amplification after be sent in earplug, and then ensure doctor can hear volume appropriateness and clearly physiological sound (heart sound,
Lungs sound, internal organ sound etc.).But in real process, occur that auscultation head is dropped or collided on other objects unavoidably, auscultation head
Impact sound will go out send the larger sound after amplifier amplifies in earplug, if now earplug is still filled in the auricle of doctor,
The sense of hearing that can be to doctor causes larger injury, or even doctor can be made temporary tinnitus or damage ear-drum occur, and permanent
Doctor's Hearing can be caused after use, influence to diagnose.
The content of the invention
Therefore, the technical problem to be solved in the present invention is to overcome existing electronic auscultation device above shortcomings, Jin Erti
For one kind earplug sound in collision can be avoided excessive, and then effectively protect the novel electronic stethoscope of doctor's hearing.
To achieve the above object, the present invention uses following technical scheme：
A kind of electronic auscultation device, it includes the auscultation head, listening tube and earplug being sequentially connected with, and the auscultation head is used to attach
The side of body is provided with sound pick-up, and the sound pick-up is connected with function circuit board, is provided with the auscultation head for powering
Power module, the physiological sound that the sound pick-up is detected is transferred to the ear by the function circuit board after amplifier amplifies
Plug, the sound pick-up are connected by elastic component with the function circuit board, one end of the remote sound pick-up of the elastic component
It is connected on pressure sensor, induced voltage signal is passed to the amplifier and amplified by the pressure sensor, after amplification
The induced voltage signal enters comparator and DSP, and the DSP is monitored when the induced voltage signal reaches preset value and opened work(
Put, and auscultated sound is output in earplug.
Preferably, the connection circuit between the pressure sensor and the DSP is：The output end of the pressure sensor
Be connected by the 3rd pin after resistance R7 with operational amplifier U1, the 3rd pin of the operational amplifier U1 by after resistance R5 with
Its first pin connects, and electric capacity C1 is in parallel with the resistance R5；The 3rd pin of the operational amplifier U1 after electric capacity C3 by being grounded；
For the 4th pin of the operational amplifier U1 by being grounded after resistance R6, electric capacity C2 is in parallel with the resistance R6；The operation amplifier
Device U1 the first pin is connected by the 3rd pin after resistance R4 with operational amplifier U2, the 4th pin point of the operational amplifier U2
It is not connected with resistance R1, R2, the first pin of the operational amplifier U2 outputs voltage signal to DSP input.
Preferably, the connection circuit between the DSP and the earplug is：The first output interface and audio of the DSP
Power amplifier U3 the first pin connection, the second output interface of the DSP pass sequentially through after electric capacity C23, resistance R20 with it is described
Audio-frequency power amplifier U3 the 4th pin connection, the 4th pin of the audio-frequency power amplifier U3 by after resistance R22 with it is described
Audio-frequency power amplifier U3 the 5th pin connection, the 5th pin and octal of the audio-frequency power amplifier U3 respectively with loudspeaker
Both positive and negative polarity connects, the external exports audio signal of loudspeaker.
Preferably, the crus secunda of the audio-frequency power amplifier U3 and/or the 3rd pin after electric capacity C22 by being grounded, electric capacity
It is arranged on after C18, C19 parallel connection between the 6th pin and the 7th pin of the audio-frequency power amplifier U3.
Preferably, the second output interface of the DSP after resistance R21 by being grounded.
Preferably, the second output interface exports audio signal of the DSP, the first output interface output work of the DSP
Decontrol OFF signal.
Preferably, the audio-frequency power amplifier U3 is LM4871 audio-frequency power amplifiers.
Preferably, the sound pick-up is microphone, and the elastic component is coil spring, one end of the coil spring
It is connected with the microphone, the other end of the helical spring is connected with the pressure sensor.
Preferably, the bluetooth module being wirelessly transferred for data is integrated with the function circuit board.
Preferably, the power module is dry cell, and the dry cell is arranged in the housing of the auscultation head.
The electronic auscultation device of the present invention at least has the advantages that compared with prior art：
The electronic auscultation device of the present invention is by the way that sound pick-up is resiliently arranged on auscultation head, and in sound pick-up and functional circuit
Pressure sensor, DSP (Digital Signal Processing) are set between plate, are only pressed against with patient auscultation head is appropriate, and hold
During continuous certain time, voicefrequency circuit can be connected, and then doctor is listened to the heart sound, lungs sound, internal organ sound of patient by earplug
Deng physiological sound, and when pressure sensor be not under pressure compressing or pressing time fall short of (of short duration shock) when, audio
Circuit is off all the time, even if now auscultation head is surprisingly dropped or collided with, its sound collided will not be also exaggerated simultaneously
It is transferred in doctor's ear, and then can be good at protecting the ear-drum health of doctor.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, below in conjunction with the accompanying drawings, the present invention is made further detailed
Thin explanation, wherein：
Fig. 1 is the structural representation of the auscultation head of the electronic auscultation device of the present invention；
Fig. 2 is the structural representation of the electronic auscultation device of the present invention；
Fig. 3 is the connection circuit between pressure sensor and DSP；
Fig. 4 is the connection circuit between DSP and earplug.
Reference is expressed as in figure：
1- auscultation heads；2- listening tubes；3- earplugs；4- sound pick-ups；5- function circuit boards；6- power modules；7- elastic components；8- is pressed
Force snesor；9- bluetooth modules；10- loudspeaker.
Embodiment
Referring to Fig. 1-2, a kind of electronic auscultation device, it includes the auscultation head 1, listening tube 2 and earplug 3 being sequentially connected with, described to listen
The side for being used to attach body for examining first 1 is provided with sound pick-up 4, and the sound pick-up 4 is connected with function circuit board 5, the auscultation
The power module 6 for power supply is provided with first 1, the power module 6 is dry cell, and the dry cell is arranged on the auscultation
In first 1 housing, in order to change power supply in time, and it is easy to carry, naturally it is also possible to it is other types of power supply, such as battery
Deng.The physiological sound that the function circuit board 5 detects the sound pick-up 4 is transferred to after amplifier amplifies in the earplug 3,
The sound pick-up 4 is connected by elastic component 7 with the function circuit board 5, and the one of the remote sound pick-up 4 of the elastic component 7
End is connected on pressure sensor 8, and induced voltage signal is passed to the amplifier and amplified by the pressure sensor 8, amplification
The induced voltage signal afterwards enters comparator and DSP, and the DSP is monitored when the induced voltage signal reaches preset value and beaten
Power amplifier is opened, and auscultated sound is output in earplug.When doctor actually uses, the auscultation head with pressure sensor gently
It is pressed on patient body, elastic component is compressed, and then oppresses the pressure sensor of the elastic component other end, and pressure sensor will
Induced voltage signal is produced, after induced voltage signal is by amplifier filter and amplification, signal is compared rear defeated into comparator
Go out and whether press signal, if this signal showed compressing time more than 2 seconds, DSP is just gone to open power amplifier, and sound is passed through loudspeaker
10 be output to earphone.Likewise, after auscultation head 1 is taken 2 seconds from human body, signal just goes and closes power amplifier.
The electronic auscultation device of the present embodiment by the way that sound pick-up is resiliently arranged on auscultation head, and sound pick-up and function electricity
Comparator and pressure sensor be set between the plate of road, only when auscultation head it is appropriate when being pressed against with patient, sound pick-up passes through
Elastic component compressive pressure sensor, default compressed value is received when comparator detects pressure sensor, and compressing time reaches
During to preset value, voicefrequency circuit can be connected, and then doctor is listened to heart sound, lungs sound, internal organ sound of patient etc. by earplug
Physiological sound, and when pressure sensor is not under pressure compressing or pressing time falls short of, voicefrequency circuit is all the time in disconnected
Open state, even if now auscultation head is surprisingly dropped or collided with, its sound collided will not also be exaggerated and be transferred in doctor's ear,
And then it can be good at protecting the ear-drum health of doctor.
Referring to Fig. 3, the connection circuit between the pressure sensor 8 and the DSP is：The pressure sensor 8 it is defeated
Go out after end passes through resistance R7 and be connected with operational amplifier U1 (being used for filter and amplification) the 3rd pin, the of the operational amplifier U1
For three pin by being connected after resistance R5 with its first pin, electric capacity C1 is in parallel with the resistance R5；The 3rd of the operational amplifier U1
Pin after electric capacity C3 by being grounded；The 4th pin of the operational amplifier U1 after resistance R6 by being grounded, electric capacity C2 and the resistance
R6 is in parallel；The first pin of the operational amplifier U1 after resistance R4 with operational amplifier U2 by (compared with being used for, namely comparing
Device) the connection of the 3rd pin, the 4th pin of the operational amplifier U2 is connected with resistance R1, R2 respectively, the operational amplifier U2
The first pin output voltage signal to DSP input.
Referring to Fig. 4, the connection circuit between the DSP and earplug 3 is：The first output interface of the DSP and audio work(
Rate amplifier U3 the first pin connection, the second output interface of the DSP pass sequentially through after electric capacity C23, resistance R20 with the sound
Frequency power amplifier U3 the 4th pin connection, the 4th pin of the audio-frequency power amplifier U3 by after resistance R22 with the sound
Frequency power amplifier U3 the 5th pin connection, the 5th pin and octal of the audio-frequency power amplifier U3 respectively with the loudspeaker
Both positive and negative polarity connection, the 10 external exports audio signal of loudspeaker, and being passed to by earplug 3 in doctor's ear.
In the present embodiment, amplifier U3 crus secunda and/or the 3rd pin after electric capacity C22 by being grounded, and electric capacity C18, C19 are simultaneously
It is arranged on after connection between the 6th pin and the 7th pin of the audio-frequency power amplifier U3, the second output interface of the DSP passes through
It is grounded after resistance R21, the second output interface exports audio signal of the DSP, the first output interface output power amplifier of the DSP
Switching signal.
In the present embodiment, the audio-frequency power amplifier U3 is LM4871 audio-frequency power amplifiers.
In the present embodiment, the sound pick-up 4 is microphone, and the elastic component 7 is coil spring, the coil spring
One end be connected with the microphone, the other end of the helical spring is connected with the pressure sensor.
In the present embodiment, the bluetooth module being wirelessly transferred for data is integrated with the function circuit board 5.Pass through setting
Bluetooth module, can be by auscultation information transmission into computer, in order to carry out the subsequent analysis of data and measurement；And bluetooth module body
Product is small, is easy to save space, energy consumption is small, and data transfer is relatively stable.
Simply technical scheme is explained in detail for above-mentioned embodiment, the present invention not only only office
Be limited to above-described embodiment, it will be understood by those skilled in the art that it is every according to above-mentioned principle and spirit on the basis of the present invention
Improve, substitute, all should be within protection scope of the present invention.
Claims (10)
1. a kind of electronic auscultation device, it includes the auscultation head, listening tube and earplug being sequentially connected with, and being used for of the auscultation head attaches body
The side of body is provided with sound pick-up, and the sound pick-up is connected with function circuit board, is provided with the auscultation head for power supply
The physiological sound that the sound pick-up is detected is transferred to the ear by power module, the function circuit board after amplifier amplifies
Plug, it is characterised in that：The sound pick-up is connected by elastic component with the function circuit board, and the remote of the elastic component described is picked up
One end of sound device is connected on pressure sensor, and induced voltage signal is passed to the amplifier and put by the pressure sensor
Greatly, the induced voltage signal after amplification enters comparator and DSP, and the DSP monitors the induced voltage signal and reaches pre-
If value, and voicefrequency circuit is just connected to open power amplifier when compressing time reaches preset value, and auscultated sound is output in earplug.
2. electronic auscultation device according to claim 1, it is characterised in that：Between the pressure sensor and the DSP
Connecting circuit is：The output end of the pressure sensor is connected by the 3rd pin after resistance R7 with operational amplifier U1, described
For operational amplifier U1 the 3rd pin by being connected after resistance R5 with its first pin, electric capacity C1 is in parallel with the resistance R5；The fortune
Amplifier U1 the 3rd pin is calculated by being grounded after electric capacity C3；The 4th pin of the operational amplifier U1 by being grounded after resistance R6,
Electric capacity C2 is in parallel with the resistance R6；
The first pin of the operational amplifier U1 is connected by the 3rd pin after resistance R4 with operational amplifier U2, and the computing is put
Big device U2 the 4th pin is connected with resistance R1, R2 respectively, and the first pin of the operational amplifier U2 outputs voltage signal to DSP's
Input.
3. electronic auscultation device according to claim 1 or 2, it is characterised in that：Connection between the DSP and the earplug
Circuit is：The first output interface of the DSP is connected with audio-frequency power amplifier U3 the first pin, the second output of the DSP
Interface is connected after passing sequentially through electric capacity C23, resistance R20 with the 4th pin of the audio-frequency power amplifier U3, the audio power
Amplifier U3 the 4th pin is connected by the 5th pin after resistance R22 with the audio-frequency power amplifier U3, the audio power
Amplifier U3 the 5th pin and octal is connected with the both positive and negative polarity of loudspeaker respectively, the external exports audio signal of loudspeaker.
4. electronic auscultation device according to claim 3, it is characterised in that：The crus secunda of the audio-frequency power amplifier U3
And/or the 3rd pin by being grounded after electric capacity C22, the of the audio-frequency power amplifier U3 is arranged on after electric capacity C18, C19 parallel connection
Between six pin and the 7th pin.
5. electronic auscultation device according to claim 4, it is characterised in that：The second output interface of the DSP passes through resistance
It is grounded after R21.
6. electronic auscultation device according to claim 5, it is characterised in that:The second output interface output audio of the DSP
Signal, the first output interface output work of the DSP decontrol OFF signal.
7. electronic auscultation device according to claim 6, it is characterised in that：The audio-frequency power amplifier U3 is LM4871 sounds
Frequency power amplifier.
8. electronic auscultation device according to claim 1, it is characterised in that：The sound pick-up is microphone, the elastic component
For coil spring, one end of the coil spring is connected with the microphone, the other end of the helical spring with it is described
Pressure sensor connects.
9. electronic auscultation device according to claim 1, it is characterised in that：It is integrated with the function circuit board for data
The bluetooth module being wirelessly transferred.
10. electronic auscultation device according to claim 1, it is characterised in that：The power module is dry cell, the dry electricity
Pond is arranged in the housing of the auscultation head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217885.5A CN104783834B (en) | 2015-04-30 | 2015-04-30 | A kind of electronic auscultation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217885.5A CN104783834B (en) | 2015-04-30 | 2015-04-30 | A kind of electronic auscultation device |
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| Publication Number | Publication Date |
|---|---|
| CN104783834A CN104783834A (en) | 2015-07-22 |
| CN104783834B true CN104783834B (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510217885.5A Active CN104783834B (en) | 2015-04-30 | 2015-04-30 | A kind of electronic auscultation device |
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| CN (1) | CN104783834B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106037788A (en) * | 2016-06-27 | 2016-10-26 | 天津润言医疗科技有限公司 | Injury-preventing auscultation apparatus |
| CN112057104A (en) * | 2020-09-18 | 2020-12-11 | 岳池县人民医院 | Stethoscope for cardiology department |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6438238B1 (en) * | 2000-07-14 | 2002-08-20 | Thomas F. Callahan | Stethoscope |
| US20030002685A1 (en) * | 2001-06-27 | 2003-01-02 | Werblud Marc S. | Electronic stethoscope |
| CN100459939C (en) * | 2006-01-06 | 2009-02-11 | 财团法人工业技术研究院 | Souffle eliminated auscultation and method |
| JP5763342B2 (en) * | 2007-12-20 | 2015-08-12 | アカリクス アクティーゼルスカブ | Adhesive patch for measuring acoustic signals |
| CN202631262U (en) * | 2012-05-15 | 2012-12-26 | 浙江金刚汽车有限公司 | Automobile electronic stethoscope |
| CN204072148U (en) * | 2014-09-26 | 2015-01-07 | 湖州师范学院 | Electronic stethoscope |
| CN204581328U (en) * | 2015-04-30 | 2015-08-26 | 苏州贝莱弗医疗科技有限公司 | A kind of electronic stethoscope |
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Effective date of registration: 20240117 Address after: 518000 12th floor, building 1, Baiwang R & D building, 5158 xilishahe West Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen maiketian Biomedical Technology Co.,Ltd. Address before: Room 202, North Side, Building B, Building 2, Independent R&D Building, No. 14 Longshan Road, Science and Technology City, High tech Zone, Suzhou City, Jiangsu Province, 215163 Patentee before: SUZHOU BEILAIFU MEDICAL TECHNOLOGY CO.,LTD. |