CN206252513U - A kind of different auscultation apparatus of Human Lung beat - Google Patents
A kind of different auscultation apparatus of Human Lung beat Download PDFInfo
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- CN206252513U CN206252513U CN201621003938.XU CN201621003938U CN206252513U CN 206252513 U CN206252513 U CN 206252513U CN 201621003938 U CN201621003938 U CN 201621003938U CN 206252513 U CN206252513 U CN 206252513U
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- sound source
- source sensor
- amplification circuit
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Abstract
The utility model discloses a kind of different auscultation apparatus of Human Lung beat, a kind of different auscultation apparatus of Human Lung beat, including controller, also include the first sound source sensor and the second sound source sensor, first sound source sensor is connected with the first pre-amplification circuit, second sound source sensor is connected with the second pre-amplification circuit, first pre-amplification circuit and the second pre-amplification circuit are connected with difference signal amplifying circuit, difference signal amplifying circuit is connected by amplitude limiter circuit with controller, second pre-amplification circuit is also connected with low-pass filter circuit, low-pass filter circuit is connected by main amplifying circuit with controller.The utility model uses two-way sound source sensor, is capable of achieving the differentiation auscultation to human chest lungs sound.Outside differentiation auscultation is realized, the normal auscultation of single channel lungs sound can be also realized.
Description
Technical field
The utility model is related to medical instruments field, more particularly to a kind of different auscultation apparatus of Human Lung beat, it is adaptable to lung
Sound is monitored.
Background technology
Lungs sound is the general name of the sound that respiratory system is produced in scavenging period, contains pathology, the life of respiratory system
Information of science.In recent years, the development with electronic technology and the understanding to lungs sound are further improved, and the auscultation of lungs sound is used as facing
An a kind of indispensable ring in bed detection.Traditional Man stethoscope is limited by auscultator's subjectivityization and non-quantitation, is caused
Make clinical auscultation rougher, it is impossible to enough useful informations fully, accurately utilized in Lung Sounds.Simultaneously as being deposited in lungs sound
When substantial amounts of interference information, and diverse location are measured, lungs sound is also not quite similar, and doctor generally requires to listen in normal auscultation
The many places lungs sound situation on the wall of the chest is taken, comprehensive descision is carried out, so if there is a kind of differentiation being capable of achieving on the same wall of the chest
Auscultation apparatus, can help doctor quickly to catch patient's lungs sound abnormal conditions.
Utility model content
The purpose of this utility model is, there is provided a kind of different auscultation apparatus of Human Lung beat, can catch two positions on the wall of the chest
Small differences of the lungs sound put on time and amplitude, to be supplied to doctor's differentiation auscultation information.
The utility model is by the technical scheme that solution its technical problem is used：
A kind of different auscultation apparatus of Human Lung beat, including controller, also pass including the first sound source sensor and the second sound source
Sensor, the first sound source sensor is connected with the first pre-amplification circuit, and the second sound source sensor and the second pre-amplification circuit connect
Connect, the first pre-amplification circuit and the second pre-amplification circuit are connected with difference signal amplifying circuit, difference signal amplifies electricity
Road is connected by amplitude limiter circuit with controller, and the second pre-amplification circuit is also connected with low-pass filter circuit, low-pass filter circuit
It is connected with controller by main amplifying circuit.
Controller as described above is also connected with SD card and display module respectively.
The beneficial effects of the utility model are：
（1）Using two-way sound source sensor, the differentiation auscultation to human chest lungs sound is capable of achieving.
（2）Outside differentiation auscultation is realized, the normal auscultation of single channel lungs sound can be also realized.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model.
In figure, 1- controllers；The pre-amplification circuits of 2- first；3- difference signal amplifying circuits；4- amplitude limiter circuits；5- second
Sound source sensor；The pre-amplification circuits of 6- second；7- low-pass filter circuits；8- main amplifying circuits；9-SD cards；10- display modules；
11- the first sound source sensors.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines diagram and specific embodiment, and the utility model is expanded on further.
Embodiment 1：
As shown in figure 1, a kind of different auscultation apparatus of Human Lung beat, including controller 1, also including the first sound source sensor 11
With the second sound source sensor 5, the first sound source sensor 11 is connected with the first pre-amplification circuit 2, the second sound source sensor 5 and
Two pre-amplification circuits 6 are connected, the first pre-amplification circuit 2 and the second pre-amplification circuit 6 with difference signal amplifying circuit 3
Connection, difference signal amplifying circuit 3 is connected by amplitude limiter circuit 4 with controller 1, and the second pre-amplification circuit 6 is gone back and low pass filtered
Wave circuit 7 is connected, and low-pass filter circuit 7 is connected by main amplifying circuit 8 with controller 1.Controller 1 also respectively with SD card 9 and
Display module 10 is connected.In the present embodiment, controller 1 uses 32 high-performance low price single-chip microcomputer STM32F103ZET6.
Wherein, the first sound source sensor 11 and the second sound source sensor 5, the first sound source sensor 11 are used to gather Human Lung
Message number and ambient noise, the second sound source sensor 5 are used to gather ambient noise.First sound source sensor 11 is faint by what is gathered
Human body Lung Sounds and ambient noise deliver to the first pre-amplification circuit 2, and the second sound source sensor 5 send the ambient noise of collection
To the second pre-amplification circuit 6.In the present embodiment, the first sound source sensor 11 and the second sound source sensor 5 are using highly sensitive
Spend 9745 types（Size 9.7x4.5mm）Electret capacitor microphone, operating voltage 2V, working frequency 100-20KHz, sensitivity-
42 ± 3dB, for gathering human body lungs sound and ambient noise.
First pre-amplification circuit 2 is used to carry out the faint Lung Sounds and ambient noise that collect preposition amplification and incite somebody to action
Faint Lung Sounds and ambient noise after preposition amplification are input to difference signal amplifying circuit 3.Second pre-amplification circuit 6 is used
In the ambient noise for collecting is carried out it is preposition amplification and by the ambient noise after preposition amplification be input to difference signal amplify electricity
Road 3.In the present embodiment, the first pre-amplification circuit 2 and the second pre-amplification circuit 6 are with low noise operational amplifier
AD620 is the multiplication factor of the in-phase amplification circuit of core component, the first pre-amplification circuit 2 and the second pre-amplification circuit 6
It is identical.
Difference signal amplifying circuit 3 is used for the faint Lung Sounds and ambient noise for being input into the first pre-amplification circuit 2
The ambient noise being input into the second pre-amplification circuit 6 make the difference and obtains difference signal, and is input into after difference signal is amplified
To amplitude limiter circuit 4, to realize difference auscultation.In the present embodiment, difference signal amplifying circuit 3 is instrument differential amplifier
AD620 is the one-level in-phase amplification circuit that core is constituted, and gain amplifier is adjustable, difference signal amplifying circuit 3 in the present embodiment
Gain amplifier is 50.
Difference signal after amplitude limiter circuit 4 is amplified to difference signal amplifying circuit 3 carries out obtaining Lung Sounds after amplitude limit defeated
Enter to controller 1, signal acquisition value saturation is caused to avoid the significantly difference signal under unknown situation from producing.By controlling
Lung Sounds are delivered to display module 10 and shown by device 1.In the present embodiment, the limiting voltage of amplitude limiter circuit 4 is 5V.
The ambient noise that low-pass filter circuit 7 is used for after amplifying to the second pre-amplification circuit 6 is filtered, so that filter can
The high-frequency interferencing signal that can exist.In the present embodiment, the cut-off frequency of low pass filter is 20KHz.
Main amplifying circuit 8 can use multistage amplifier circuit, enter with to the filtered ambient noise of low-pass filtered circuit 7
The big multiple of row amplifies.In the present embodiment, main amplifying circuit 8 uses the gain amplifier of second amplifying circuit, main amplifying circuit 8 to be
50。
SD card 9 is also associated with controller 1.The Lung Sounds and background that the module of SD card 9 is used for the collection of store controller 1 are made an uproar
Sound, analyzes so that the later stage reads.
In the present embodiment, display module 10 uses 256x64 dot matrix black-and-white crystal screens, for showing Lung Sounds and background
Noise.
Operation principle of the present utility model is as follows：First,
The faint human body Lung Sounds for gathering and ambient noise are delivered to the first preposition amplification electricity by the first sound source sensor 11
The ambient noise of collection is delivered to the second pre-amplification circuit 6 by road 2, the second sound source sensor 5.First pre-amplification circuit 2 is used
In the faint Lung Sounds and ambient noise that collect are carried out it is preposition amplification and by preposition amplification after faint Lung Sounds and
Ambient noise is input to difference signal amplifying circuit 3.Before second pre-amplification circuit 6 is used to carry out the ambient noise for collecting
Put big and the ambient noise after preposition amplification is input to difference signal amplifying circuit 3.Difference signal amplifying circuit 3 is by first
The ambient noise that the faint Lung Sounds and ambient noise of the input of pre-amplification circuit 2 are input into the second pre-amplification circuit 6 enters
Row makes the difference and obtains difference signal, and is input to amplitude limiter circuit 4 after difference signal is amplified, to realize difference auscultation.Amplitude limiter circuit 4
Difference signal after amplifying to difference signal amplifying circuit 3 carries out obtaining Lung Sounds after amplitude limit being input to controller 1.By controlling
Lung Sounds are delivered to display module 10 and shown by device 1, and Lung Sounds are transferred into SD card 9 are stored.LPF electricity
Ambient noise after 7 pairs, road the second pre-amplification circuit 6 amplifies is filtered, to filter high-frequency interferencing signal that may be present.
Main amplifying circuit 8 carries out big multiple and amplifies and be input to controller 1 to the filtered ambient noise of low-pass filtered circuit 7.Control
Ambient noise is exported in display module 10 and shown by device processed 1.While ambient noise is input to SD card 9 and entered by controller 1
Row storage.
In actual application, also can be used alone the first sound source sensor 11 or the second directly inspection of sound source sensor 5
Lung Sounds and ambient noise are surveyed, the normal auscultation of single channel lungs sound is realized.
General principle of the present utility model, principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, the utility model can also on the premise of the utility model spirit and scope are not departed from
There are various changes and modifications, these changes and improvements are both fallen within the range of claimed the utility model.
Claims (2)
1. a kind of different auscultation apparatus of Human Lung beat, including controller（1）, it is characterised in that also including the first sound source sensor
（11）With the second sound source sensor（5）, the first sound source sensor（11）With the first pre-amplification circuit（2）Connection, the second sound source
Sensor（5）With the second pre-amplification circuit（6）Connection, the first pre-amplification circuit（2）With the second pre-amplification circuit（6）
With difference signal amplifying circuit（3）Connection, difference signal amplifying circuit（3）By amplitude limiter circuit（4）With controller（1）Connection,
Second pre-amplification circuit（6）Also with low-pass filter circuit（7）Connection, low-pass filter circuit（7）By main amplifying circuit（8）With
Controller（1）Connection.
2. a kind of different auscultation apparatus of Human Lung beat according to claim 1, it is characterised in that described controller（1）
Also respectively with SD card（9）And display module（10）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621003938.XU CN206252513U (en) | 2016-08-30 | 2016-08-30 | A kind of different auscultation apparatus of Human Lung beat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621003938.XU CN206252513U (en) | 2016-08-30 | 2016-08-30 | A kind of different auscultation apparatus of Human Lung beat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206252513U true CN206252513U (en) | 2017-06-16 |
Family
ID=59022345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621003938.XU Expired - Fee Related CN206252513U (en) | 2016-08-30 | 2016-08-30 | A kind of different auscultation apparatus of Human Lung beat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206252513U (en) |
-
2016
- 2016-08-30 CN CN201621003938.XU patent/CN206252513U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170616 Termination date: 20180830 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |