CN204181640U - Multi-purpose electronic stethoscope - Google Patents
Multi-purpose electronic stethoscope Download PDFInfo
- Publication number
- CN204181640U CN204181640U CN201420657234.9U CN201420657234U CN204181640U CN 204181640 U CN204181640 U CN 204181640U CN 201420657234 U CN201420657234 U CN 201420657234U CN 204181640 U CN204181640 U CN 204181640U
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- CN
- China
- Prior art keywords
- sound
- processor unit
- electronic stethoscope
- purpose electronic
- earphone
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- 239000003990 capacitor Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000003745 diagnosis Methods 0.000 abstract description 4
- 238000002555 auscultation Methods 0.000 description 10
- 230000003321 amplification Effects 0.000 description 7
- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 210000004072 lung Anatomy 0.000 description 4
- 238000005070 sampling Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 208000009205 Tinnitus Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000056 organ Anatomy 0.000 description 2
- 231100000886 tinnitus Toxicity 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
This utility model relates to medical instruments field, particularly relate to a kind of sound collection accurately, the multi-purpose electronic stethoscope of real-time listening, comprise receiver, Sound Processor Unit and earphone, described Sound Processor Unit comprises sound-voltage sensor, amplifying circuit, bandwidth-limited circuit and power amplifier, described Sound Processor Unit is provided with complete machine on and off switch, and described Sound Processor Unit is provided with charger mouth.The design of this utility model multi-purpose electronic stethoscope, sound-voltage sensor adopts electret capacitor type sensor to achieve the conversion of sound to voltage signal, conduit is placed on sound-voltage sensor, which improves the directionality of sound, and the interference of external sound can be suppressed, ensure the accuracy of diagnosis, thus ensure that the safety of patient.
Description
Technical field
This utility model relates to medical instruments field, particularly relates to a kind of multi-purpose electronic stethoscope.
Background technology
In prior art, traditional stethoscope is all the combination of easy receiver, amplifier and earphone, faint in use due to audio signal, the inaccurate of signal sampling will be caused, there is phenomenon off and on sometimes, this just brings puzzlement to the diagnosis state of an illness, thus brings very serious potential safety hazard to the personal safety of patient.
Summary of the invention
In order to solve the problems of the technologies described above, this utility model provide a kind of sound collection accurately, the multi-purpose electronic stethoscope of real-time listening.
The multi-purpose electronic stethoscope of utility model, comprise receiver, Sound Processor Unit and earphone, described Sound Processor Unit comprises sound-voltage sensor, amplifying circuit, bandwidth-limited circuit and power amplifier, described receiver is provided with conduit, described conduit is placed on sound-voltage sensor, the described outfan of sound-voltage sensor is connected with the input of amplifying circuit, the outfan of described amplifying circuit is connected with the input of bandwidth-limited circuit, the outfan of described bandwidth-limited circuit is connected with the input of power amplifier, the outfan of described power amplifier is connected with the input of earphone, described Sound Processor Unit is provided with complete machine on and off switch, described Sound Processor Unit is provided with charger mouth.
Further, the outfan of described bandwidth-limited circuit is provided with audio sample, storage system, described audio sample, storage system comprise ADC, MCU, SD card and button, the input of described ADC is connected with the outfan of bandwidth-limited circuit, the input of described MCU is connected with the outfan of ADC, described button is arranged on Sound Processor Unit, described by key control audio sample, storage system, described Sound Processor Unit is provided with SD draw-in groove, described SD card inserts in SD draw-in groove, and described MCU is to SD cartoon letters.
Further, the input end of described earphone is provided with earphone enable switch.
Further, described sound-voltage sensor adopts electret capacitor type sensor.
Further, described amplifying circuit and bandwidth-limited circuit adopt the operational amplifier of OPA2365.
Further, described power amplifier adopts LM386 power amplifier.
Further, the precision of described ADC is not less than 12bit, and described MCU adopts STM32F103ZET6 single-chip microcomputer.
Compared with prior art, the beneficial effects of the utility model are: equipment is electronic stethoscope, sound-voltage sensor adopts electret capacitor type sensor to achieve the conversion of sound to voltage signal, conduit is placed on sound-voltage sensor, which improves the directionality of sound, and the interference of external sound can be suppressed, ensure the accuracy of diagnosis, thus ensure that the safety of patient; The frequency range of the acoustical signal of the organ such as the heart, lung is all generally tens to 5KHz, and signal is more weak, noise is large, here the OPA2365 operational amplifier of TI is adopted to realize the function of amplification and filtering, due to the low noise of OPA2365 operational amplifier, the characteristic of high cmrr, make the auscultation of doctor more accurate; Amplification, filtered acoustical signal are carried out power amplification by power amplification circuit and then are promoted earphone, but can noise be produced when mobile earphone, owing to there being the existence of amplifying circuit and power amplifier, noise also can be exaggerated, the ear of doctor is hindered in easy shake, make doctor's tinnitus, this equipment adds earphone enable switch, earphone enable switch is first turned off when mobile earphone, then mobile earphone, open earphone enable switch again when fixing on earphone, noise so just can be avoided the impact of doctor's ear; Audio sample, storage system is added in equipment, enable real-time being sampled, recording and storing of the audio frequency of auscultation, and be integrated in SD card, ensure that the data of auscultation can not be lost, equipment is provided with button to control sampling and the storage of audio frequency, achieves human-computer interactive control.
Accompanying drawing explanation
Fig. 1 is the anatomical connectivity schematic diagram of this utility model multi-purpose electronic stethoscope;
Fig. 2 is the structural representation of the multi-purpose electronic stethoscope shown in Fig. 1;
Fig. 3 is the sound-voltage sensor of the multi-purpose electronic stethoscope shown in Fig. 1, and amplify, the circuit theory diagrams of filtering part;
Fig. 4 is the power amplifier schematic diagram of the multi-purpose electronic stethoscope shown in Fig. 1;
Fig. 5 is MCU, ADC interface and the key circuit schematic diagram of the multi-purpose electronic stethoscope shown in Fig. 1;
Fig. 6 is the SD card interface circuit schematic diagram of the multi-purpose electronic stethoscope shown in Fig. 1.
1, patient; 2, sound-voltage sensor; 3, amplifying circuit; 4, bandwidth-limited circuit; 5, power amplifier; 6, earphone; 7, earphone enable switch; 8, ADC; 9, MCU; 10, SD card; 11, button; 12, receiver; 13, Sound Processor Unit; 14, complete machine on and off switch; 15, charger mouth; 16, SD draw-in groove.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.
Shown in Fig. 1-6, multi-purpose electronic stethoscope, comprise receiver 12, Sound Processor Unit 13 and earphone 6, Sound Processor Unit 13 comprises sound-voltage sensor 2, amplifying circuit 3, bandwidth-limited circuit 4 and power amplifier 5, receiver 12 is provided with conduit, conduit is placed on sound-voltage sensor 2, the outfan of sound-voltage sensor 2 is connected with the input of amplifying circuit 3, the outfan of amplifying circuit 3 is connected with the input of bandwidth-limited circuit 4, the outfan of bandwidth-limited circuit 4 is connected with the input of power amplifier 5, the outfan of power amplifier 5 is connected with the input of earphone 6, Sound Processor Unit 13 is provided with complete machine on and off switch 14, Sound Processor Unit 13 is provided with charger mouth 15, the outfan of bandwidth-limited circuit 4 is provided with audio sample, storage system, audio sample, storage system comprise ADC8, MCU9, SD card 10 and button 11, the input of ADC8 is connected with the outfan of bandwidth-limited circuit 4, the input of MCU9 is connected with the outfan of ADC8, button 11 is arranged on Sound Processor Unit 13, and button 11 controls audio sample, storage system, and Sound Processor Unit 13 is provided with SD draw-in groove 16, SD card 10 inserts in SD draw-in groove 16, and MCU9 communicates to SD card 10, the input end of earphone 6 is provided with earphone enable switch 7, sound-voltage sensor 2 adopts electret capacitor type sensor, amplifying circuit 3 and bandwidth-limited circuit 4 adopt the operational amplifier of OPA2365, power amplifier 5 adopts LM386 power amplifier, the precision of ADC8 is not less than 12bit, and MCU9 adopts STM32F103ZET6 single-chip microcomputer.
During use, first complete machine on and off switch 14 is opened, then earphone 6 is fixed, open earphone enable switch 7 again, then receiver 12 is moved to the position that patient 1 needs auscultation, the heart of patient 1, the audio signals such as lung enter into sound-voltage sensor 2 through receiver 12, audio signal completes by the conversion of sound to voltage signal in sound-voltage sensor 2, the noise reduction of signal is made again through the process of amplifying circuit 3 and bandwidth-limited circuit 4, then to be sent in earphone 6 by power amplifier 5 and to enable doctor hear the heart of patient 1, the frequency signal of lung etc., while auscultation, the low-noise signal that amplifying circuit 3 and bandwidth-limited circuit 4 processed is stored in SD card 10 under the effect of ADC8 and MCU9, doctor can control sampling and storage work by button 11, terminate in auscultation, first turn off earphone enable switch 7, then earphone 6 is removed, finally turn off complete machine on and off switch 14, complete the process of whole auscultation, when equipment needs charging, only charger need to be received on the charger mouth 15 on equipment and to switch on power.
Equipment is electronic stethoscope, sound-voltage sensor 2 adopts electret capacitor type sensor to achieve the conversion of sound to voltage signal, conduit is placed on sound-voltage sensor 2, which improves the directionality of sound, and the interference of external sound can be suppressed, ensure the accuracy of diagnosis, thus ensure that the safety of patient 1; The frequency range of the acoustical signal of the organ such as the heart, lung is all generally tens to 5KHz, and signal is more weak, noise is large, here the OPA2365 operational amplifier of TI is adopted to realize the function of amplification and filtering, due to the low noise of OPA2365 operational amplifier, the characteristic of high cmrr, make the auscultation of doctor more accurate; Amplification, filtered acoustical signal are carried out power amplification by power amplifier 5 and then are promoted earphone 6, but can noise be produced when mobile earphone 6, owing to there being the existence of amplifying circuit 3 and power amplifier 5, noise also can be exaggerated, the ear of doctor is hindered in easy shake, make doctor's tinnitus, this equipment adds earphone enable switch 7, earphone enable switch 7 is first turned off when mobile earphone 6, then mobile earphone 6, open earphone enable switch 7 again when fixing on earphone 6, noise so just can be avoided the impact of doctor's ear; Audio sample, storage system is added in equipment, enable real-time being sampled, recording and storing of the audio frequency of auscultation, and be integrated in SD card 10, ensure that the data of auscultation can not be lost, equipment is provided with button 11 to control sampling and the storage of audio frequency, achieves human-computer interactive control.
Comprise the above; be only detailed description of the invention of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that this utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (7)
1. multi-purpose electronic stethoscope, comprise receiver, Sound Processor Unit and earphone, it is characterized in that, described Sound Processor Unit comprises sound-voltage sensor, amplifying circuit, bandwidth-limited circuit and power amplifier, described receiver is provided with conduit, described conduit is placed on sound-voltage sensor, the described outfan of sound-voltage sensor is connected with the input of amplifying circuit, the outfan of described amplifying circuit is connected with the input of bandwidth-limited circuit, the outfan of described bandwidth-limited circuit is connected with the input of power amplifier, the outfan of described power amplifier is connected with the input of earphone, described Sound Processor Unit is provided with complete machine on and off switch, described Sound Processor Unit is provided with charger mouth.
2. multi-purpose electronic stethoscope as claimed in claim 1, it is characterized in that, the outfan of described bandwidth-limited circuit is provided with audio sample, storage system, described audio sample, storage system comprises ADC, MCU, SD card and button, the input of described ADC is connected with the outfan of bandwidth-limited circuit, the input of described MCU is connected with the outfan of ADC, described button is arranged on Sound Processor Unit, described by key control audio sample, storage system, described Sound Processor Unit is provided with SD draw-in groove, described SD card inserts in SD draw-in groove, described MCU is to SD cartoon letters.
3. multi-purpose electronic stethoscope as claimed in claim 1, it is characterized in that, the input end of described earphone is provided with earphone enable switch.
4. multi-purpose electronic stethoscope as claimed in claim 1, is characterized in that, described sound-voltage sensor adopts electret capacitor type sensor.
5. multi-purpose electronic stethoscope as claimed in claim 1, is characterized in that, described amplifying circuit and bandwidth-limited circuit adopt the operational amplifier of OPA2365.
6. multi-purpose electronic stethoscope as claimed in claim 1, is characterized in that, described power amplifier adopts LM386 power amplifier.
7. multi-purpose electronic stethoscope as claimed in claim 2, it is characterized in that, the precision of described ADC is not less than 12bit, and described MCU adopts STM32F103ZET6 single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657234.9U CN204181640U (en) | 2014-11-06 | 2014-11-06 | Multi-purpose electronic stethoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420657234.9U CN204181640U (en) | 2014-11-06 | 2014-11-06 | Multi-purpose electronic stethoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204181640U true CN204181640U (en) | 2015-03-04 |
Family
ID=52613677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420657234.9U Active CN204181640U (en) | 2014-11-06 | 2014-11-06 | Multi-purpose electronic stethoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204181640U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109288316A (en) * | 2018-10-31 | 2019-02-01 | 中国地质大学（武汉） | It is a kind of based on the intelligent baby bed of NB-IoT network |
| CN111724802A (en) * | 2020-06-17 | 2020-09-29 | 广东汉泓医疗科技有限公司 | Noise removing circuit of stethoscope |
| CN112472121A (en) * | 2020-11-30 | 2021-03-12 | 中山大学孙逸仙纪念医院 | In-ear objective tinnitus diagnosis device |
-
2014
- 2014-11-06 CN CN201420657234.9U patent/CN204181640U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109288316A (en) * | 2018-10-31 | 2019-02-01 | 中国地质大学（武汉） | It is a kind of based on the intelligent baby bed of NB-IoT network |
| CN111724802A (en) * | 2020-06-17 | 2020-09-29 | 广东汉泓医疗科技有限公司 | Noise removing circuit of stethoscope |
| CN112472121A (en) * | 2020-11-30 | 2021-03-12 | 中山大学孙逸仙纪念医院 | In-ear objective tinnitus diagnosis device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI LANGLANG TECHNOLOGY DEVELOPMENT CO., LTD. Free format text: FORMER OWNER: LIU GUODONG Effective date: 20150716 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Guodong Inventor after: Liu Guoliang Inventor before: Liu Guodong |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LIU GUODONG TO: LIU GUODONG LIU GUOLIANG |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150716 Address after: Fubon Building 1 No. 050011 Hebei city of Shijiazhuang province Changan District Building No. 506 North Street Patentee after: HEBEI LANGLANG SCIENCE & TECHNOLOGY DEVELOPMENT CO., LTD. Address before: 253000 No. 1, building 3, building 2, 601, Youth League Road, Decheng District, Shandong, Dezhou Patentee before: Liu Guodong |
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| TR01 | Transfer of patent right |
Effective date of registration: 20190111 Address after: 256600 No. 1 Building, Huizhong Building, No. 997 Huanghe 16th Road, Binzhou City, Shandong Province 210 Patentee after: Binzhou Bincheng Economic Development Investment Co., Ltd. Address before: 050011 Fubang Building 506, No. 1 Jianbei Street, Chang'an District, Shijiazhuang City, Hebei Province Patentee before: HEBEI LUNTECH DEVELOPMENT CO., LTD. |
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| TR01 | Transfer of patent right |