CN209059253U - A kind of portable intelligent stethoscope - Google Patents
A kind of portable intelligent stethoscope Download PDFInfo
- Publication number
- CN209059253U CN209059253U CN201821059250.2U CN201821059250U CN209059253U CN 209059253 U CN209059253 U CN 209059253U CN 201821059250 U CN201821059250 U CN 201821059250U CN 209059253 U CN209059253 U CN 209059253U
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- China
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- resistance
- capacitor
- operational amplifier
- microphone
- communication chip
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Abstract
The utility model discloses a kind of portable intelligent stethoscopes, using microphone MK1~MK4, resistance R1~R10, capacitor C1~C7, operational amplifier U1A, U2A, Voltage stabilizing module and acquisition communication chip ESP8266 combine mode, cardiechema signals are acquired by microphone MK1~MK4, then signal is by filtering processing removal noise, it will treated after cardiechema signals are boosted and amplified, it is ultimately transferred to acquisition communication chip ESP8266, acquisition communication chip ESP8266, which is converted analog signals into after digital signal, is wirelessly sent to heart sound digital signal required display control terminal by connecting with WiFi module；It is the compact of the utility model, cheap, easy to carry, and the noise in acquisition cardiechema signals can be removed, to guarantee the accuracy of heart sound acquisition.
Description
Technical field
The utility model relates to a kind of stethoscope, specifically a kind of portable intelligent stethoscope.
Background technique
Auscultation be it is clinically very widely used see the mode of examining, such as: cardiac arrhythmia and heart valve can be diagnosed by hearing the rhythm of the heart
The heart diseases such as film lesion, these be all be clinically critically important reference, cause stethoscope become doctor representative as
Sign.But it is well known, when using a stethoscope, most abstain from indoor noise and noise.In addition, if patient is in stethoscope branch
Sound is talked, and may interfere with the correctness of auscultation.Therefore, with the progress of modern electrical technology, there are some Intelligent stethoscopes
Sound can be converted to digital signal to be stored and used, but these equipment are mostly based on the end PC, it is inconvenient to carry, and valence
Lattice are expensive, can not largely popularize.
Summary of the invention
In view of the above-mentioned problems of the prior art, the utility model provides a kind of portable intelligent stethoscope, volume
It is small and exquisite, cheap, and the noise in acquisition cardiechema signals can be removed, to guarantee the accuracy of heart sound acquisition.
To achieve the goals above, the technical solution adopted in the utility model is: a kind of portable intelligent stethoscope, including
The Acquisition Circuit of shell and setting inside housings, the Acquisition Circuit includes microphone MK1~MK4, resistance R1~R10, capacitor
One end of C1~C7, operational amplifier U1A, U2A, Voltage stabilizing module and acquisition communication chip ESP8266, microphone MK4 are grounded, are another
One end of microphone MK2 is terminated, the other end of microphone MK2 is connect with one end of one end of resistance R1 and capacitor C1, and capacitor C1's is another
One end is connect with the non-inverting input terminal of one end of resistance R2 and operational amplifier U1A, and microphone MK1 is connected in parallel on the both ends of microphone MK2,
Microphone MK3 is connected in parallel on the both ends of microphone MK4, one end of the inverting input terminal of operational amplifier U1A and resistance R3, capacitor C2 one
End is connected with one end of resistance R4, and one end of resistance R4 is connect with one end of capacitor C3, and the other end of resistance R3 is with capacitor C2's
The other end, resistance R5 one end connected with the output end of operational amplifier U1A, one end of the other end of resistance R5 and resistance R6,
One end of resistance R7 is connected with the non-inverting input terminal of operational amplifier U2A, the inverting input terminal and resistance R9 of operational amplifier U2A
One end connected with one end of resistance R8, the other end of resistance R8 and the output end of operational amplifier U2A and acquire communication chip
2 feet of ESP8266 connect, and the end Vin of Voltage stabilizing module is connect with one end of one end of capacitor C6 and capacitor C7, and capacitor C6's is another
End is connect with one end of the other end of capacitor C7, one end of capacitor C4 and capacitor C5, and the other end of capacitor C5 is another with capacitor C4's
One end, Voltage stabilizing module the end Vout with acquisition communication chip ESP8266 8 feet connect, acquisition communication chip ESP8266 16 feet
It is connect with one end of resistance R10, the other end of resistance R2, the ground terminal of operational amplifier U1A, the other end of resistance R7, operation
The ground terminal of amplifier U2A, the other end of resistance R9, the other end of capacitor C3, the other end of resistance R10, acquisition communication chip
16 feet of ESP8266 and the end GND of Voltage stabilizing module are grounded, the other end of resistance R1, the power end of operational amplifier U1A, electricity
The other end, the power end of operational amplifier U2A and the end Vin of Voltage stabilizing module of resistance R6 connects 6V DC power supply.
Further, the model of the operational amplifier U1A and U2A is NE5532P.
Further, the model AMS1117 of the Voltage stabilizing module.
Compared with prior art, the utility model uses microphone MK1~MK4, resistance R1~R10, capacitor C1~C7, operation
Amplifier U1A, U2A, Voltage stabilizing module and acquisition communication chip ESP8266 combine mode, acquire the heart by microphone MK1~MK4
Sound signal, then signal is by filtering processing removal noise, will treated after cardiechema signals are boosted and amplified, it is final to pass
Acquisition communication chip ESP8266 is passed, acquisition communication chip ESP8266 is converted analog signals into after digital signal by it
Heart sound digital signal is wirelessly sent to required display control terminal by the WiFi module in portion；Therefore the utility model is small in size
It is skilful easy to carry, cheap, and can be after microphone collects cardiechema signals through filtering processing removal noise, to guarantee
Then the accuracy of heart sound acquisition acquires communication chip ESP8266 for the Heart Sound Simulation signal of acquisition and is converted into heart sound number letter
It is wirelessly transferred again after number, also ensures the data stability of cardiechema signals in transmission process.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model；
Fig. 2 is using the collected cardiechema signals figure of the utility model.
Specific embodiment
The utility model is described in further detail below.
As shown in Figure 1, the utility model includes the Acquisition Circuit of shell and setting inside housings, the Acquisition Circuit packet
Include microphone MK1~MK4, resistance R1~R10, capacitor C1~C7, operational amplifier U1A, U2A, Voltage stabilizing module and acquisition communication core
One end ground connection of piece ESP8266, microphone MK4, another one end for terminating microphone MK2, the other end of microphone MK2 and the one of resistance R1
End is connected with one end of capacitor C1, the non-inverting input terminal of the other end of capacitor C1 and one end of resistance R2 and operational amplifier U1A
Connection, microphone MK1 are connected in parallel on the both ends of microphone MK2, and microphone MK3 is connected in parallel on the both ends of microphone MK4, and operational amplifier U1A's is anti-
Phase input terminal is connect with one end of one end of resistance R3, one end of capacitor C2 and resistance R4, and one end of resistance R4 is with capacitor C3's
One end connection, the other end of resistance R3 and the other end, one end of resistance R5 and the output end of operational amplifier U1A of capacitor C2 connect
It connecing, the other end of resistance R5 is connect with the non-inverting input terminal of one end of resistance R6, one end of resistance R7 and operational amplifier U2A,
The inverting input terminal of operational amplifier U2A is connect with one end of one end of resistance R9 and resistance R8, the other end and fortune of resistance R8
The output end for calculating amplifier U2A is connected with 2 feet of acquisition communication chip ESP8266, the end Vin of Voltage stabilizing module and the one of capacitor C6
End is connected with one end of capacitor C7, the other end of capacitor C6 and the one of the other end of capacitor C7, one end of capacitor C4 and capacitor C5
End connection, the other end and the other end of capacitor C4, the end Vout of Voltage stabilizing module and the acquisition communication chip ESP8266 of capacitor C5
16 feet of the connection of 8 feet, acquisition communication chip ESP8266 are connect with one end of resistance R10, the other end, the operation amplifier of resistance R2
The ground terminal of device U1A, the other end of resistance R7, the ground terminal of operational amplifier U2A, the other end of resistance R9, capacitor C3 it is another
One end, resistance R10 the other end, acquire 16 feet of communication chip ESP8266 and the end GND of Voltage stabilizing module is grounded, resistance R1
The other end, the power end of operational amplifier U1A, the other end of resistance R6, operational amplifier U2A power end and Voltage stabilizing module
The end Vin connect 6V DC power supply.
Further, the model of the operational amplifier U1A and U2A is NE5532P.
Further, the model AMS1117 of the Voltage stabilizing module.
When being auscultated using the utility model, wherein microphone MK1~MK4 is powered by 6V DC power supply, will be collected
Heart sound be converted into heart sound AC signal, for heart sound AC signal after capacitor C1, d-c noise signal is isolated, only remaining
Heart sound AC signal subsequently enters the non-inverting input terminal of operational amplifier U1A, by the defeated of operational amplifier U1A after amplification
Outlet outflow.Then cardiechema signals pass through 6V DC power supply, resistance R5, resistance R6, the boosting of tetra- original parts of resistance R7 composition again
Circuit, by cardiechema signals current boost 0.05V.The non-inverting input terminal for subsequently entering operational amplifier U2A is passing through operation amplifier
After 10 times of amplification of device U2A, forms heart sound AC signal of the range within 0~1V and enters in acquisition communication ESP8266,
Then acquisition communication ESP8266 is sent to after signal progress conversion process by WiFi module.
Test proves: using the utility model by the obtained heart sound signal acquisition of auscultation to acquiring communication chip ESP8266,
Its wifi module of arranging in pairs or groups uses the server or terminal of the data needed for can transferring data to.As shown in Fig. 2, it is not do
Any collected cardiechema signals of processing；As seen from the figure, what the cardiechema signals of the acquisition were fully aware of observes a heartbeat
Heart sound twice.And the sound similarity of heartbeat twice is very high, shows that the acquisition of signal is sufficiently stable.Therefore the utility model is adopted
The signal collected can support subsequent signal to analyze, and can obtain good result.
Claims (3)
1. a kind of portable intelligent stethoscope, the Acquisition Circuit including shell and setting inside housings, which is characterized in that described
Acquisition Circuit includes microphone MK1~MK4, resistance R1~R10, capacitor C1~C7, operational amplifier U1A, U2A, Voltage stabilizing module and
Acquire communication chip ESP8266, microphone MK4 one end ground connection, it is another termination microphone MK2 one end, the other end of microphone MK2 with
One end of resistance R1 is connected with one end of capacitor C1, the other end of capacitor C1 and one end of resistance R2 and operational amplifier U1A's
Non-inverting input terminal connection, microphone MK1 are connected in parallel on the both ends of microphone MK2, and microphone MK3 is connected in parallel on the both ends of microphone MK4, operation amplifier
The inverting input terminal of device U1A is connect with one end of one end of resistance R3, one end of capacitor C2 and resistance R4, one end of resistance R4 with
One end of capacitor C3 connects, the other end and the other end of capacitor C2, one end of resistance R5 and the operational amplifier U1A of resistance R3
Output end connection, the other end of resistance R5 and one end, one end of resistance R7 and the homophase input of operational amplifier U2A of resistance R6
End connection, the inverting input terminal of operational amplifier U2A are connect with one end of one end of resistance R9 and resistance R8, and resistance R8's is another
It holds and is connect with 2 feet of the output end of operational amplifier U2A and acquisition communication chip ESP8266, the end Vin of Voltage stabilizing module and capacitor
One end of C6 is connected with one end of capacitor C7, the other end and the other end of capacitor C7, one end of capacitor C4 and the capacitor of capacitor C6
One end of C5 connects, the other end and the other end of capacitor C4, the end Vout of Voltage stabilizing module and the acquisition communication chip of capacitor C5
8 feet of ESP8266 connect, and 16 feet of acquisition communication chip ESP8266 are connect with one end of resistance R10, the other end of resistance R2,
The ground terminal of operational amplifier U1A, the other end of resistance R7, the ground terminal of operational amplifier U2A, resistance R9 the other end, electricity
The end GND for holding the other end of C3, the other end of resistance R10,16 feet for acquiring communication chip ESP8266 and Voltage stabilizing module connects
Ground, the other end of resistance R1, the power end of operational amplifier U1A, the other end of resistance R6, operational amplifier U2A power end
6V DC power supply is connect with the end Vin of Voltage stabilizing module.
2. a kind of portable intelligent stethoscope according to claim 1, which is characterized in that the operational amplifier U1A and
The model of U2A is NE5532P.
3. a kind of portable intelligent stethoscope according to claim 1, which is characterized in that the model of the Voltage stabilizing module
AMS1117。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821059250.2U CN209059253U (en) | 2018-07-04 | 2018-07-04 | A kind of portable intelligent stethoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821059250.2U CN209059253U (en) | 2018-07-04 | 2018-07-04 | A kind of portable intelligent stethoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209059253U true CN209059253U (en) | 2019-07-05 |
Family
ID=67089233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821059250.2U Expired - Fee Related CN209059253U (en) | 2018-07-04 | 2018-07-04 | A kind of portable intelligent stethoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209059253U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611906A (en) * | 2020-12-31 | 2021-04-06 | 大连民族大学 | Portable handheld oscilloscope |
-
2018
- 2018-07-04 CN CN201821059250.2U patent/CN209059253U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611906A (en) * | 2020-12-31 | 2021-04-06 | 大连民族大学 | Portable handheld oscilloscope |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190705 Termination date: 20200704 |
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| CF01 | Termination of patent right due to non-payment of annual fee |