CN204468044U - A kind of heart sound signal acquisition system - Google Patents
A kind of heart sound signal acquisition system Download PDFInfo
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- CN204468044U CN204468044U CN201520052986.7U CN201520052986U CN204468044U CN 204468044 U CN204468044 U CN 204468044U CN 201520052986 U CN201520052986 U CN 201520052986U CN 204468044 U CN204468044 U CN 204468044U
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- heart sound
- cardiechema signals
- sound sensor
- signal
- acquisition system
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Abstract
The utility model discloses a kind of heart sound signal acquisition system, four sensors are utilized to obtain aortic valve, valve of pulmonary trunk, Tricuspid valve and mitral cardiechema signals respectively, utilize analog circuit to carry out signal condition and effectively simulated cardiechema signals, by analog-digital converter ADC module, analogue signal is converted to digital signal again, finally digital signal is exported by wireless WiFi, the cardiechema signals of four target sites can be gathered simultaneously, and by wireless output, facilitate wireless terminal to obtain hear sounds collection result, target cardiechema signals can be gathered efficiently and accurately.
Description
Technical field
This utility model relates to cardiechema signals process field, particularly relates to a kind of heart sound signal acquisition system.
Background technology
China cardiovascular diseases number of patients, still in quick growing trend, gathers cardiechema signals in time, exactly, has very important significance to the prevention of cardiovascular disease and timely diagnosis and treatment.
Hear sounds is a kind of compound tone produced due to the diastole contraction of valvular switch, tendon and muscle, the impact of blood flow and cardiovascular wall vibrations.It comprises about a large amount of pathological informations of heart various piece as atrium, ventricle, trunk, cardiovascular and each valvular function state, is the most basic parameter of clinical assessment heart function state.Be enough to produce clinical pathology change (as ECG Change) in the past when cardiovascular disease does not develop into, the noise occurred in hear sounds and distortion are exactly important diagnostic message.Therefore, hear sounds has the irreplaceable clinical diagnosis advantage of electrocardio.Meanwhile, cardiechema signals is easy to detect, noinvasive, cost are minimum, can be used as that cardiovascular diseases detects, the conventional means of prevention.
But in cardiac auscultation, there are problems at present, conventional stethoscope is difficult to catch and differentiate faint physiological signal and be easily disturbed, diagnostic result is subject to personal experience's impact of auscultation doctor, and conventional stethoscope only has single auscultation head, auscultation can only be carried out to single position, carry out repeatedly auscultation to diverse location just can distinguish, complicated operation, diagnosis are not high.
Utility model content
In view of this, this utility model provides a kind of heart sound signal acquisition system, can gather target cardiechema signals efficiently and accurately.
For achieving the above object, this utility model provides a kind of heart sound signal acquisition system, comprising:
Response hear sounds acquisition instructions obtains the fourth heart sound sensor of the first heart sound sensor of aortic valve cardiechema signals, the second heart sound sensor obtaining valve of pulmonary trunk cardiechema signals, the third heart sound sensor obtaining Tricuspid valve cardiechema signals and acquisition Bicuspid valve cardiechema signals;
Be connected with fourth heart sound sensor with described first heart sound sensor, second heart sound sensor, third heart sound sensor, the cardiechema signals that described heart sound transducer collection exports is carried out nursing one's health the Signal-regulated kinase obtaining target simulation cardiechema signals;
Be connected with described Signal-regulated kinase, described target simulation cardiechema signals be converted to the modular converter of digital signal;
Be connected with described modular converter, by the wireless output module of described digital signal by wireless output.
Preferably, described Signal-regulated kinase comprises:
The described simulation cardiechema signals that described heart sound transducer collection exports is carried out the pre-amplification circuit amplified;
Be connected with described pre-amplification circuit, the described simulation cardiechema signals after amplification carried out to the bandwidth-limited circuit of filtering;
Be connected with described bandwidth-limited circuit, eliminate the notch filter circuit of Hz noise;
Be connected with described notch filter circuit, the level lifting circuit that lifting obtains target simulation cardiechema signals is carried out to the level of the described simulation cardiechema signals after elimination Hz noise;
For described Signal-regulated kinase circuit provides the power circuit of power supply.
Preferably, described heart sound signal acquisition system also comprises:
All be connected with fourth heart sound sensor with described first heart sound sensor, second heart sound sensor, third heart sound sensor, monitor the monitoring module of hear sounds acquisition instructions.
Preferably, described wireless output module is wireless network card.
Preferably, described wireless network card is connected with described modular converter by USB interface.
Preferably, described modular converter is S3C6410X chip.
The heart sound signal acquisition system that application this utility model provides, four sensors are utilized to obtain aortic valve, valve of pulmonary trunk, Tricuspid valve and mitral cardiechema signals respectively, utilize analog circuit to carry out signal condition and effectively simulated cardiechema signals, by analog digital conversion ADC module, analogue signal is converted to digital signal again, finally by digital signal by wireless output, the cardiechema signals of four target sites can be gathered simultaneously, and by wireless output, facilitate wireless terminal to obtain hear sounds collection result, target cardiechema signals can be gathered efficiently and accurately.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the structural representation of a kind of heart sound signal acquisition system of this utility model;
Fig. 2 is the example structure schematic diagram of a kind of heart sound signal acquisition system of this utility model;
Fig. 3 is the embodiment circuit theory diagrams of a kind of heart sound signal acquisition system of this utility model;
Fig. 4 is the hardware elementary diagram of a kind of heart sound signal acquisition system of this utility model;
Fig. 5 is the another structural representation of a kind of heart sound signal acquisition of this utility model system;
Fig. 6 is the embodiment flow chart of a kind of heart sound signal acquisition system of this utility model;
Fig. 7 is the embodiment flow chart of a kind of heart sound signal acquisition system of this utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, be clearly and completely described the technical scheme in this utility model embodiment, obviously, described embodiment is only this utility model part embodiment, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of this utility model protection.
This utility model provides a kind of heart sound signal acquisition system, as shown in Figure 1, is the structural representation of this utility model heart sound signal acquisition system embodiment, comprises:
Response hear sounds acquisition instructions obtains the fourth heart sound sensor 104 of the first heart sound sensor 101 of aortic valve cardiechema signals, the second heart sound sensor 102 obtaining valve of pulmonary trunk cardiechema signals, the third heart sound sensor 103 obtaining Tricuspid valve cardiechema signals and acquisition Bicuspid valve cardiechema signals;
Be connected with fourth heart sound sensor 104 with described first heart sound sensor 101, second heart sound sensor 102, third heart sound sensor 103, the cardiechema signals that described heart sound transducer collection exports is carried out nursing one's health the Signal-regulated kinase 105 obtaining target simulation cardiechema signals;
Be connected with described Signal-regulated kinase 105, described target simulation cardiechema signals be converted to the modular converter 106 of digital signal;
Be connected with described modular converter 106, by the wireless output module 107 of described digital signal by wireless output.
The heart sound signal acquisition system that application the present embodiment provides, four sensors are utilized to obtain aortic valve respectively, valve of pulmonary trunk, Tricuspid valve and mitral cardiechema signals, utilize Signal-regulated kinase to carry out signal condition to the cardiechema signals obtained and effectively simulated cardiechema signals, by modular converter, analogue signal is converted to digital signal again, finally by digital signal by wireless output, the cardiechema signals of four target sites can be gathered simultaneously, and by wireless output, wireless terminal is facilitated to obtain hear sounds collection result, target cardiechema signals can be gathered efficiently and accurately.
As shown in Figure 2, be another specific embodiment theory diagram of the present utility model, the vibrations chamber that heart sound transducer can adopt Minnesota Mining and Manufacturing Company to produce and a mike that Japanese iron triangle company produces formed.Four heart sound transducers are placed on heart four auscultation positions aortic valve (A), valve of pulmonary trunk (P), Tricuspid valve (T), Bicuspid valve (M), pass through Signal-regulated kinase, realize simulation heart sound signal acquisition, by the ADC analog digital conversion program of design S3C6410X chip, realize the conversion of analogue signal to digital signal, realized to wireless terminal as the data of Android phone are transmitted by Wi-Fi wireless transmission.
As shown in Figure 3, be the analog circuit of the Signal-regulated kinase in the present embodiment, comprise: pre-amplification circuit, band-pass circuit, notch filter circuit, level lifting circuit and power circuit.
The signal that heart sound transducer exports is very faint, draws, when powering to auscultation head with 10K current-limiting resistance, 5V voltage, recording hear sounds amplitude be about-70mV ~+70mV through oscillograph through test.According to analysis, select OPA37 as amplifier chip, design pre-amplification circuit amplifies cardiechema signals;
Bandwidth-limited circuit Selecting operation chip TLC2252, its bandwidth of operation comprises the frequency range of hear sounds completely, the features such as its high input impedance, low input offset voltage, high cmrr are well suited for the filtering of cardiechema signals, realize the filtering to cardiechema signals like this;
The frequency band range of cardiechema signals is 20-800Hz, because system adopts power supply adaptor to power, therefore the Hz noise of 50Hz is introduced, and just in time drop in the frequency band range of cardiechema signals, its interference strength likely can flood useful signal, therefore designs notch filter circuit for eliminating 50Hz Hz noise.
Analogue signal amplitude after front end hardware process is about between-1.4V ~+1.4V, but the ADC of S3C6410X requires that input analogue signal is between 0V ~ 3.3V, if do not carry out lifting to signal, so can only process the analogue signal of half, this is not obviously the result wanted, so be incorporated herein level lifting circuit.The amplifier OPA37 in preamplifying circuit has been used in level lifting circuit.
Use in analog circuit ± 5V, in embedded hardware, used+3.3V voltage.System adopts power supply adaptor to power, and amplitude is+5V, by the voltage using MAX739 to produce-5V.+ 3.3V power supply is produced by AMS1117-3.3.
As shown in Figure 4, be the hardware block diagram of the modular converter of the present embodiment, be mainly used to the analogue signal of front end to be converted into digital signal, then send to Android phone by USB network card.Employ the analog-digital converter ADC of S3C6410X in the present system, be used for the simulation cardiechema signals of digitized four passages.The EP-N8508GS utilizing the USB Host interface of S3C6410X connection wireless network card to produce as EDUP company connects for wireless terminal such as Android phone as focus.By the serial ports three of S3C6410X with MAX3232 chip to connecing, the debugging of application program in the transplanting and terminal of terminal applies development system.
As shown in Figure 5, be the another specific embodiment of this utility model, corresponding to Fig. 1, also comprise:
All be connected with fourth heart sound sensor 104 with described first heart sound sensor 101, second heart sound sensor 102, third heart sound sensor 103, monitor the monitoring module 108 of hear sounds acquisition instructions.
The hear sounds acquisition instructions that Heart Sound Sampling System monitor terminal sends, the collection carrying out hear sounds after listening to stores, and send data to terminal again after collection, adopt two threads to carry out practical function, one for receiving the order that client is sent; One, for sending heart sound data to client, is illustrated in figure 6 data router flow chart.
The present embodiment, after collection cardiechema signals, need be carried out Treatment Analysis as successful data reception in Android phone to heart sound data at wireless terminal, be designed, realize synchronous transfer and the display of four road hear sounds by the client-side program of Android phone; Realize the storage of four road heart sound datas, data upload, the convergent-divergent of waveform; Realize display heart rate.By this system acquisition cardiechema signals, obtain four-way heart sound data.As shown in Figure 7, be client-side program flow chart.
What the present embodiment provided four leads Heart Sound Sampling System, have the advantages that energy synchronous acquisition four leads heart sound data, achieve the collection of multichannel cardiechema signals, avoid the trouble of single guiding systems operation, cost is lower, hardware components is few, and part of functions has been concentrated on wireless terminal as in Android phone, has met the requirement of information age, compare other instruments bulky, carry inconvenience, have more portable function, facilitate user, adopt wireless mode as Wi-Fi and terminal interaction.Comparatively speaking, although USB speed uses inconvenience soon, and regular plug may make USB port break down; Match often consuming time when bluetooth uses, Wi-Fi is easy to use, and speed is fast, long transmission distance, can gather target cardiechema signals efficiently and accurately according to user's request.
It should be noted that, each embodiment in this description all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Finally, also it should be noted that, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above system provided by the utility model is described in detail, apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (6)
1. a heart sound signal acquisition system, is characterized in that, comprising:
Response hear sounds acquisition instructions obtains the fourth heart sound sensor of the first heart sound sensor of aortic valve cardiechema signals, the second heart sound sensor obtaining valve of pulmonary trunk cardiechema signals, the third heart sound sensor obtaining Tricuspid valve cardiechema signals and acquisition Bicuspid valve cardiechema signals;
Be connected with fourth heart sound sensor with described first heart sound sensor, second heart sound sensor, third heart sound sensor, the cardiechema signals that described heart sound transducer collection exports is carried out nursing one's health the Signal-regulated kinase obtaining target simulation cardiechema signals;
Be connected with described Signal-regulated kinase, described target simulation cardiechema signals be converted to the modular converter of digital signal;
Be connected with described modular converter, by the wireless output module of described digital signal by wireless output.
2. heart sound signal acquisition system according to claim 1, is characterized in that, described Signal-regulated kinase comprises:
The described simulation cardiechema signals that described heart sound transducer collection exports is carried out the pre-amplification circuit amplified;
Be connected with described pre-amplification circuit, the described simulation cardiechema signals after amplification carried out to the bandwidth-limited circuit of filtering;
Be connected with described bandwidth-limited circuit, eliminate the notch filter circuit of Hz noise;
Be connected with described notch filter circuit, the level lifting circuit that lifting obtains target simulation cardiechema signals is carried out to the level of the described simulation cardiechema signals after elimination Hz noise;
For described Signal-regulated kinase circuit provides the power circuit of power supply.
3. heart sound signal acquisition system according to claim 2, is characterized in that, also comprise:
All be connected with fourth heart sound sensor with described first heart sound sensor, second heart sound sensor, third heart sound sensor, monitor the monitoring module of hear sounds acquisition instructions.
4. heart sound signal acquisition system according to claim 3, is characterized in that, described wireless output module is wireless network card.
5. heart sound signal acquisition system according to claim 4, is characterized in that, described wireless network card is connected with described modular converter by USB interface.
6. heart sound signal acquisition system according to claim 5, is characterized in that, described modular converter is S3C6410X chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052986.7U CN204468044U (en) | 2015-01-26 | 2015-01-26 | A kind of heart sound signal acquisition system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520052986.7U CN204468044U (en) | 2015-01-26 | 2015-01-26 | A kind of heart sound signal acquisition system |
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| Publication Number | Publication Date |
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| CN204468044U true CN204468044U (en) | 2015-07-15 |
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| CN201520052986.7U Expired - Fee Related CN204468044U (en) | 2015-01-26 | 2015-01-26 | A kind of heart sound signal acquisition system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106446521A (en) * | 2016-08-31 | 2017-02-22 | 周辉 | Standardized heart disease remote diagnosis platform |
| CN106510751A (en) * | 2016-09-28 | 2017-03-22 | 华南师范大学 | Multifunctional electronic stethoscope and auscultation system |
| CN111883180A (en) * | 2020-07-13 | 2020-11-03 | 中国人民解放军联勤保障部队第九二〇医院 | Wireless heart sound auscultation equipment and data comparison method thereof |
-
2015
- 2015-01-26 CN CN201520052986.7U patent/CN204468044U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106446521A (en) * | 2016-08-31 | 2017-02-22 | 周辉 | Standardized heart disease remote diagnosis platform |
| CN106510751A (en) * | 2016-09-28 | 2017-03-22 | 华南师范大学 | Multifunctional electronic stethoscope and auscultation system |
| CN111883180A (en) * | 2020-07-13 | 2020-11-03 | 中国人民解放军联勤保障部队第九二〇医院 | Wireless heart sound auscultation equipment and data comparison method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20180126 |