CN105286908A - Electronic cardiopulmonary stethoscope based on bluetooth communication - Google Patents
Electronic cardiopulmonary stethoscope based on bluetooth communication Download PDFInfo
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- CN105286908A CN105286908A CN201510708010.5A CN201510708010A CN105286908A CN 105286908 A CN105286908 A CN 105286908A CN 201510708010 A CN201510708010 A CN 201510708010A CN 105286908 A CN105286908 A CN 105286908A
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Abstract
The invention relates to the technical field of medical electronics, and specifically relates to an electronic cardiopulmonary stethoscope based on bluetooth communication. The electronic cardiopulmonary stethoscope comprises earphones, a cardiopulmonary sound sensor used for detecting cardiopulmonary audio signals, a low-noise amplification circuit used for amplifying signals; a first band-pass filtering circuit used for band-pass filtering, a second band-pass filtering circuit used for band-pass filtering, an audio power amplifier circuit used for signal power amplification, an A/D converting circuit used for A/D conversion, a microcontroller used for signal processing, and a bluetooth module used for signal transmission. According to the invention, the cardiopulmonary audio signals of human bodies are detected through the cardiopulmonary sound sensor; the signals are processed through the low-noise amplification circuit, the first band-pass filtering circuit and the second band-pass filtering circuit, so that the signals are high in precision; and bluetooth transmission for the data signals is realized through the bluetooth module. The electronic cardiopulmonary stethoscope is simple in structure, is convenient to operate, and is high in practicality.
Description
Technical field
The present invention relates to medical electronics technical field, especially a kind of electronics heart and lung auscultation device based on Bluetooth communication.
Background technology
As everyone knows, heart and lung sounds auscultation is diagnosis heart and lung diseases and understanding a kind of the most ancient of cardio-pulmonary function is also the most frequently used method.Although the method for conventional stethoscope auscultation heart and lung sounds is simple, is often difficult to capture some faint but very important biological sound that inside of human body internal organs send, causes doctor cannot make diagnosis in time.Special under rugged environment, as on the in disorder scene of the accident, busy emergency room and noisy ambulance, it is almost impossible that traditional stethoscope be used effectively to diagnose.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of electronics heart and lung auscultation device based on Bluetooth communication.
To achieve these goals, the present invention adopts following technical scheme:
Based on an electronics heart and lung auscultation device for Bluetooth communication, it comprises heart and lung sounds sensor, low-noise amplification circuit, the first bandwidth-limited circuit, the second bandwidth-limited circuit, audio power amplifier circuit, earphone, A/D change-over circuit, microcontroller and the bluetooth module for Signal transmissions;
Signal is also inputed to low-noise amplification circuit by described heart and lung sounds sensor for human detection cardiopulmonary audio signal, and signal carries out amplifying and the signal after amplifying is inputed to the first bandwidth-limited circuit and the second bandwidth-limited circuit by described low-noise amplification circuit;
Signal is carried out Filtering Processing and signal is inputed to audio power amplifier circuit by described first bandwidth-limited circuit, and signal is carried out power amplifier process and signal is inputed to earphone by described audio power amplifier circuit;
Signal is carried out Filtering Processing and signal is inputed to A/D change-over circuit by described second bandwidth-limited circuit, signal is carried out A/D conversion and signal is inputed to microcontroller by described A/D change-over circuit, and signal carries out arranging and by signal feedback to bluetooth module by described microcontroller.
Preferably, described microcontroller is also electrically connected with keyboard, liquid crystal display screen and memorizer.
Preferably, described low-noise amplification circuit comprises the first amplifier and the second amplifier, the in-phase end of described first amplifier is by first electric capacity of connecting successively and the first resistance eutral grounding, be connected with heart and lung sounds sensor between described first electric capacity and the first resistance, the end of oppisite phase of described first amplifier is by the 3rd resistance eutral grounding and by second electric capacity of connecting successively and the second resistance eutral grounding, four resistance of end of oppisite phase by connecting successively of described first amplifier, 3rd electric capacity is connected with the outfan of self with the 4th electric capacity, be connected with the outfan of the first amplifier by the 5th resistance between described 4th resistance and the 3rd electric capacity, be connected with the outfan of the first amplifier by the 6th resistance between described 3rd electric capacity and the 4th electric capacity, the outfan of described first amplifier is connected with the in-phase end of the second amplifier by the 5th electric capacity, eight resistance of the end of oppisite phase of described second amplifier by the 7th resistance eutral grounding and by connecting successively, 6th electric capacity is connected with the outfan of self with the 7th electric capacity, the outfan of described second amplifier is connected with the first bandwidth-limited circuit and the second bandwidth-limited circuit.
Owing to have employed such scheme, the present invention realizes the detection of human body cardiopulmonary audio signal by heart and lung sounds sensor; Meanwhile, utilize low-noise amplification circuit, the first bandwidth-limited circuit and the second bandwidth-limited circuit to realize the process of signal, realize the high accuracy of signal; Further, utilize bluetooth module to realize the Bluetooth transmission of data signal, its structure is simple, easy to operate, has very strong practicality.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the embodiment of the present invention;
Fig. 2 is the electrical block diagram of the low-noise amplification circuit of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figure 1, a kind of electronics heart and lung auscultation device based on Bluetooth communication of the present embodiment, it comprises heart and lung sounds sensor 1, low-noise amplification circuit 2, first bandwidth-limited circuit 3, second bandwidth-limited circuit 6, audio power amplifier circuit 4, earphone 5, A/D change-over circuit 7, microcontroller 8 and the bluetooth module 9 for Signal transmissions;
Signal is also inputed to low-noise amplification circuit 2 by heart and lung sounds sensor 1 human body cardiopulmonary audio signal, and signal carries out amplifying and the signal after amplifying is inputed to the first bandwidth-limited circuit 3 and the second bandwidth-limited circuit 6 by low-noise amplification circuit 2;
Signal is carried out Filtering Processing and signal is inputed to audio power amplifier circuit 4 by the first bandwidth-limited circuit 3, and signal is carried out power amplifier process and signal is inputed to earphone 5 by audio power amplifier circuit 4;
Signal is carried out Filtering Processing and signal is inputed to A/D change-over circuit 7 by the second bandwidth-limited circuit 6, signal is carried out A/D conversion and signal is inputed to microcontroller 8 by A/D change-over circuit 7, and signal carries out arranging and by signal feedback to bluetooth module 9 by microcontroller 8.
Further, microcontroller 8 is also electrically connected with keyboard 11, liquid crystal display screen 12 and memorizer 10.
During the present embodiment work, the detection of human body cardiopulmonary audio signal is carried out by heart and lung sounds sensor 1, the signal detected, because too small and existence is disturbed, therefore utilize low-noise amplification circuit 2 to amplify, signal after amplification is divided into two-way: a road utilizes the first bandwidth-limited circuit 3 to carry out filtering, inputs to earphone 5, listen to for doctor after filtering after utilizing audio power amplifier circuit 4 power amplifier; Another road then utilizes the second bandwidth-limited circuit 6 to carry out Filtering Processing, and filtered signal carries out A/D conversion by A/D change-over circuit 7, inputs to microcontroller 8 after conversion.Signal arranges by microcontroller 8, is sent out by signal after arrangement by bluetooth module 9, utilizes memorizer 10 to store simultaneously, facilitates the follow-up extraction to data message, for display and the control of work, is then realized by liquid crystal display screen 12 and keyboard 11.
The low-noise amplification circuit 2 of the present embodiment can adopt circuit structure as shown in Figure 2, namely the first amplifier A1 and the second amplifier A2 is comprised, the in-phase end of the first amplifier A1 is by the first electric capacity C1 of connecting successively and the first resistance R1 ground connection, be connected with heart and lung sounds sensor 1 between first electric capacity C1 and the first resistance R1, the end of oppisite phase of the first amplifier A1 is by the 3rd resistance R3 ground connection and by the second electric capacity C2 of connecting successively and the second resistance R2 ground connection, the four resistance R4 of end of oppisite phase by connecting successively of the first amplifier A1, 3rd electric capacity C3 is connected with the outfan of self with the 4th electric capacity C4, be connected with the outfan of the first amplifier A1 by the 5th resistance R5 between 4th resistance R4 and the 3rd electric capacity C3, be connected with the outfan of the first amplifier A1 by the 6th resistance R6 between 3rd electric capacity C3 and the 4th electric capacity C4, the outfan of the first amplifier A1 is connected with the in-phase end of the second amplifier A2 by the 5th electric capacity C5, the eight resistance R8 of the end of oppisite phase of the second amplifier A2 by the 7th resistance R7 ground connection and by connecting successively, 6th electric capacity C6 is connected with the outfan of self with the 7th electric capacity C7, the outfan of the second amplifier A2 is connected with the first bandwidth-limited circuit 3 and the second bandwidth-limited circuit 6.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. based on an electronics heart and lung auscultation device for Bluetooth communication, it is characterized in that: it comprises heart and lung sounds sensor, low-noise amplification circuit, the first bandwidth-limited circuit, the second bandwidth-limited circuit, audio power amplifier circuit, earphone, A/D change-over circuit, microcontroller and the bluetooth module for Signal transmissions;
Signal is also inputed to low-noise amplification circuit by described heart and lung sounds sensor for human detection cardiopulmonary audio signal, and signal carries out amplifying and the signal after amplifying is inputed to the first bandwidth-limited circuit and the second bandwidth-limited circuit by described low-noise amplification circuit;
Signal is carried out Filtering Processing and signal is inputed to audio power amplifier circuit by described first bandwidth-limited circuit, and signal is carried out power amplifier process and signal is inputed to earphone by described audio power amplifier circuit;
Signal is carried out Filtering Processing and signal is inputed to A/D change-over circuit by described second bandwidth-limited circuit, signal is carried out A/D conversion and signal is inputed to microcontroller by described A/D change-over circuit, and signal carries out arranging and by signal feedback to bluetooth module by described microcontroller.
2. a kind of electronics heart and lung auscultation device based on Bluetooth communication as claimed in claim 1, is characterized in that: described microcontroller is also electrically connected with keyboard, liquid crystal display screen and memorizer.
3. a kind of electronics heart and lung auscultation device based on Bluetooth communication as claimed in claim 2, it is characterized in that: described low-noise amplification circuit comprises the first amplifier and the second amplifier, the in-phase end of described first amplifier is by first electric capacity of connecting successively and the first resistance eutral grounding, be connected with heart and lung sounds sensor between described first electric capacity and the first resistance, the end of oppisite phase of described first amplifier is by the 3rd resistance eutral grounding and by second electric capacity of connecting successively and the second resistance eutral grounding, four resistance of end of oppisite phase by connecting successively of described first amplifier, 3rd electric capacity is connected with the outfan of self with the 4th electric capacity, be connected with the outfan of the first amplifier by the 5th resistance between described 4th resistance and the 3rd electric capacity, be connected with the outfan of the first amplifier by the 6th resistance between described 3rd electric capacity and the 4th electric capacity, the outfan of described first amplifier is connected with the in-phase end of the second amplifier by the 5th electric capacity, eight resistance of the end of oppisite phase of described second amplifier by the 7th resistance eutral grounding and by connecting successively, 6th electric capacity is connected with the outfan of self with the 7th electric capacity, the outfan of described second amplifier is connected with the first bandwidth-limited circuit and the second bandwidth-limited circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510708010.5A CN105286908A (en) | 2015-10-27 | 2015-10-27 | Electronic cardiopulmonary stethoscope based on bluetooth communication |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510708010.5A CN105286908A (en) | 2015-10-27 | 2015-10-27 | Electronic cardiopulmonary stethoscope based on bluetooth communication |
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| CN105286908A true CN105286908A (en) | 2016-02-03 |
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| CN201510708010.5A Pending CN105286908A (en) | 2015-10-27 | 2015-10-27 | Electronic cardiopulmonary stethoscope based on bluetooth communication |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1957840A (en) * | 2006-11-06 | 2007-05-09 | 毛绍贝 | Networked synthesized detector for blood pressure/heartbeat/body temperature/heart and lung sounds |
| CN201701235U (en) * | 2010-02-09 | 2011-01-12 | 杭州电子科技大学 | Portable visual Bluetooth electronic auscultator with function of separating heart and lung sounds |
| CN202313422U (en) * | 2011-11-28 | 2012-07-11 | 杭州电子科技大学 | Portable coronary artery stenosis lossless diagnosis instrument |
| CN202654154U (en) * | 2012-03-13 | 2013-01-09 | 天津市天堰医教科技开发有限公司 | Visual wave-shaped electronic stethoscope |
-
2015
- 2015-10-27 CN CN201510708010.5A patent/CN105286908A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1957840A (en) * | 2006-11-06 | 2007-05-09 | 毛绍贝 | Networked synthesized detector for blood pressure/heartbeat/body temperature/heart and lung sounds |
| CN201701235U (en) * | 2010-02-09 | 2011-01-12 | 杭州电子科技大学 | Portable visual Bluetooth electronic auscultator with function of separating heart and lung sounds |
| CN202313422U (en) * | 2011-11-28 | 2012-07-11 | 杭州电子科技大学 | Portable coronary artery stenosis lossless diagnosis instrument |
| CN202654154U (en) * | 2012-03-13 | 2013-01-09 | 天津市天堰医教科技开发有限公司 | Visual wave-shaped electronic stethoscope |
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Application publication date: 20160203 |