CN202458439U - Portable lung sound detection device - Google Patents
Portable lung sound detection device Download PDFInfo
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- CN202458439U CN202458439U CN2012200799167U CN201220079916U CN202458439U CN 202458439 U CN202458439 U CN 202458439U CN 2012200799167 U CN2012200799167 U CN 2012200799167U CN 201220079916 U CN201220079916 U CN 201220079916U CN 202458439 U CN202458439 U CN 202458439U
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- lungs sound
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Abstract
The utility model discloses a portable lung sound detection device which comprises a microphone, a filtering-amplifying circuit, an analog to digital converter, a singlechip, a keyboard and a display screen, wherein the microphone is used for converting acquired sound signals into electric signals; the filtering-amplifying circuit is used for amplifying and filtering signals coming from the microphone; the analog to digital converter is used for converting signals provided by the filtering-amplifying circuit into digital signals; the singlechip is used for treating signals coming from the analog to digital converter and storing obtained data; the lung sound detection device is controlled through the keyboard operated by a user; and the display screen is used for displaying running results of the lung sound detection device, and is connected with a communication interface arranged between a serial interface of the singlechip and a universal serial bus (USB) interface of a computer so as to be used for being communicated with the computer and transmitting lung sound data. The portable lung sound detection device can be used for detecting and recording lung sound, and transmitting the lung sound data into the computer through the communication interface, and has the advantages of being convenient to use, small in volume, low in cost and rich in functions.
Description
Technical field
This utility model relates to a kind of equipment of health inspection, is specifically related to a kind of portable lungs sound checkout gear.
Background technology
Lungs sound is that change has taken place the motion mode of air-flow in the respiratory, forms eddy current or turbulent flow, the sound wave of generation.Since Laenner in 1816 invented stethoscope, lungs sound had become an important indicator of reflection pulmonary's physiology and pathology, and has promoted the respiratory system subject development.Clinical practice is found; The lungs sound that people's ear is heard by stethoscope; Diagnostic result examinate's subjective factors influence is bigger; Reason is people's ear to the essence of experiencing of sound is the comprehensive impression to intensity of sound and frequency content, and it is bigger to cause diagnostic result influenced by anthropic factor, thereby causes the accuracy of diagnostic result on the low side.
Summary of the invention
To above-mentioned technical problem, this utility model technical problem to be solved is, to the uncertainty of traditional lungs sound auscultation; And the high-leveled and difficult deficiency to promote of some special digital auscultation equipment prices, a kind of portable lungs sound checkout gear is provided, this device can detect and write down lungs sound; Have easy to use; Volume is little, and cost is low, the advantage that function is strong.
Realize that this utility model purpose technical scheme is following:
Portable lungs sound checkout gear comprises: microphone converts the acoustical signal that collects into the signal of telecommunication; And the amplification filtering circuit, the signal that will come from microphone amplifies and filtering; And
Analog-digital converter, the conversion of signals that the amplification filtering circuit is provided is a digital signal; And
Single-chip microcomputer is handled and the data that obtain is stored the signal that comes from analog-digital converter; And
Keyboard supplies the user manipulation keyboard to control said lungs sound checkout gear; And
Display screen is used to show that the operation result of said lungs sound checkout gear and menu show; And
Be connected in the serial communication interface between microcontroller serial port and the computer, be used for and the computer communication, transmission lungs sound data.
Adopted such scheme, this utility model has overcome the uncertainty of traditional lungs sound auscultation so that the lungs sound conversion of signals that detects is become digital form, has improved the accuracy that detects.The doctor can store lungs sound, and the concrete condition of lungs sound is shown when detecting lungs sound, and therefore, this device not only can detect and write down lungs sound, has easy to usely, and volume is little, and cost is low, the advantage that function is strong.And can send the lungs sound data of storage to computer through communication interface, be convenient to the preservation and the further lungs sound date processing of lungs sound data, for the detection of respiratory system disease, diagnosis provide supplementary means preferably.
Single-chip microcomputer adopts as 51 series monolithics have very strong Data Control function, can be used for signals collecting, data storage and transfer of data, and volume is little, and low in energy consumption, low price is applicable to the portable digital medical instrument of exploitation.In addition, what microphone adopted is electret capacitor microphone, and the advantage that this microphone has has: Hz-KHz is wide, and frequency response is straight, dynamic range is big, the distortion factor is little, highly sensitive, characteristic such as noise is little, electromagnetic interference is little, temperature coefficient is little.This utility model adopts electret capacitor microphone (hereinafter to be referred as ECM), has advantages such as volume is little, simple in structure, electroacoustic performance is good, cheap, satisfies the needs that lungs sound detects.
Description of drawings
Fig. 1 is the theory diagram of this utility model.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment this utility model is done further to specify.
With reference to Fig. 1; The portable lungs sound checkout gear of this utility model; It is made up of microphone 10, amplification filtering circuit 20, monitoring module 30, analog-digital converter 40, single-chip microcomputer 50, keyboard 60, display screen 70, memorizer 80, serial communication interface 90 and power module 100, is elaborated in the face of every part down:
Microphone 10 converts the acoustical signal that collects into the signal of telecommunication.Microphone 10 is moving coil microphone or condenser microphone.What adopt in this embodiment is condenser microphone, and this condenser microphone is an electret capacitor microphone.During detection, microphone 10 is placed the subjects chest, can convert the acoustical signal of gathering into the signal of telecommunication.
The signal that amplification filtering circuit 20 will come from microphone 10 amplifies and filtering.Present embodiment adopts the integrated transporting discharging chip to carry out amplification filtering, and passband is 20-3000Hz, and amplification is 60.
Monitor the outfan that module 30 is connected in amplification filtering circuit 20, detected lungs sound is monitored.Said monitoring module 30 comprises audio amplifier circuit, and the signal that the amplification filtering circuit is exported further amplifies; And earphone, be used for the auscultation lungs sound.The doctor monitors through monitoring 30 pairs of lungs sound signals of module, can tentatively tentatively judge detected person's pulmonary condition.
The conversion of signals that analog-digital converter 40 (A/D) provides the amplification filtering circuit is a digital signal.This embodiment adopts the built-in A/D of single-chip microcomputer sheet to realize.In order to guarantee data precision, the precision of A/D conversion is 12 or 16.Also adoptable is external analog-digital converter 40, and promptly this analog-digital converter 40 is positioned at the outside of single-chip microcomputer 50, and is non-built-in.
50 pairs of single-chip microcomputers come from the signal of analog-digital converter and handle and the data that obtain are stored.50 pairs of data of single-chip microcomputer are calculated, and draw testing result through the program that pre-sets, and various results are outputed on the display screen show.The single-chip microcomputer of present embodiment adopts the high C8051F060 model chip of cost performance, and chip internal contains 16 analog-digital converter.Lungs sound signals sampling frequency is 8000-10000Hz, and in the present embodiment, sample frequency is 10000Hz.
Keyboard 60 supplies the user manipulation keyboard to control said lungs sound checkout gear.The lungs sound checkout gear of present embodiment can be selected control data storage and transfer of data through keyboard.
The lungs sound digital signal that 80 pairs of single-chip microcomputers of memorizer are handled is stored.Memorizer 80 is used to store the lungs sound signal that the lungs sound checkout gear is gathered; The present embodiment memorizer is selected the extended menory of flash memorizer as C8051F060 for use; Capacity is 32M*8bit; When the lungs sound sample frequency is 10KHz, be about 25 minutes lungs sound signal in the time of can storing altogether, can satisfy the needs of clinical lungs sound inspection.
Claims (6)
1. a portable lungs sound checkout gear is characterized in that, comprising: microphone converts the acoustical signal that collects into the signal of telecommunication; And
The amplification filtering circuit, the signal that will come from microphone amplifies and filtering; And
Analog-digital converter, the conversion of signals that the amplification filtering circuit is provided is a digital signal; And
Single-chip microcomputer is handled and the data that obtain is stored the signal that comes from analog-digital converter; And
Keyboard supplies the user manipulation keyboard to control said lungs sound checkout gear; And
Display screen is used to show that the operation result of said lungs sound checkout gear and menu show; And
Be connected in the serial communication interface between microcontroller serial port and the computer USB interface, be used for and the computer communication, transmission lungs sound data.
2. portable lungs sound checkout gear according to claim 1 is characterized in that, this portable lungs sound checkout gear also comprises the monitoring module that is connected in the amplification filtering circuit output end, and detected lungs sound is monitored.
3. portable lungs sound checkout gear according to claim 2 is characterized in that said monitoring module comprises audio amplifier circuit, and the signal that the amplification filtering circuit is exported further amplifies; And earphone, be used for the auscultation lungs sound.
4. portable lungs sound checkout gear according to claim 1 is characterized in that, this portable lungs sound checkout gear also comprises memorizer, and the lungs sound digital signal that single-chip microcomputer is handled is stored.
5. portable lungs sound checkout gear according to claim 1 is characterized in that said microphone is moving coil microphone or condenser microphone.
6. portable lungs sound checkout gear according to claim 5 is characterized in that said condenser microphone is an electret capacitor microphone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200799167U CN202458439U (en) | 2012-03-06 | 2012-03-06 | Portable lung sound detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200799167U CN202458439U (en) | 2012-03-06 | 2012-03-06 | Portable lung sound detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202458439U true CN202458439U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200799167U Expired - Fee Related CN202458439U (en) | 2012-03-06 | 2012-03-06 | Portable lung sound detection device |
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| CN (1) | CN202458439U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103932733A (en) * | 2014-04-11 | 2014-07-23 | 中国人民解放军第三军医大学第三附属医院 | Digitalized detecting analysis method for pulmonary interstitial fibrosis based on lung sound |
| CN107198540A (en) * | 2017-07-10 | 2017-09-26 | 山东朗朗智能科技发展有限公司 | Human Physiology sound harvester and system |
| CN107260207A (en) * | 2017-07-10 | 2017-10-20 | 山东朗朗智能科技发展有限公司 | Lungs sound figure machine and lungs sound figure machine system |
-
2012
- 2012-03-06 CN CN2012200799167U patent/CN202458439U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103932733A (en) * | 2014-04-11 | 2014-07-23 | 中国人民解放军第三军医大学第三附属医院 | Digitalized detecting analysis method for pulmonary interstitial fibrosis based on lung sound |
| CN107198540A (en) * | 2017-07-10 | 2017-09-26 | 山东朗朗智能科技发展有限公司 | Human Physiology sound harvester and system |
| CN107260207A (en) * | 2017-07-10 | 2017-10-20 | 山东朗朗智能科技发展有限公司 | Lungs sound figure machine and lungs sound figure machine system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20150306 |
|
| EXPY | Termination of patent right or utility model |