CN204698543U - A kind of pulse wave propagate rate-measuring device - Google Patents
A kind of pulse wave propagate rate-measuring device Download PDFInfo
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- CN204698543U CN204698543U CN201520239751.9U CN201520239751U CN204698543U CN 204698543 U CN204698543 U CN 204698543U CN 201520239751 U CN201520239751 U CN 201520239751U CN 204698543 U CN204698543 U CN 204698543U
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Abstract
This utility model relates to a kind of pulse wave propagate rate-measuring device, comprise ECG electrode, fluctuation sensor, electrocardiosignal modulate circuit, pulse wave signal modulate circuit, data collecting card and the host computer containing virtual instrument, the outfan of described ECG electrode connects the input of electrocardiosignal modulate circuit, the outfan of described fluctuation sensor connects the input of pulse wave signal modulate circuit, the input of the outfan of described electrocardiosignal modulate circuit and the outfan of pulse wave signal modulate circuit connection data capture card respectively, the outfan of described data collecting card connects the input of host computer.Compared with prior art, this utility model has that cost is low, detection speed is fast, precision is high, stability advantages of higher.
Description
Technical field
This utility model relates to Human Physiology detection field, especially relates to a kind of pulse wave propagate rate-measuring device.
Background technology
Pulse wave transmission speed (Pulse Wave Velocity is called for short PWV) refers to that pulse wave is propagated at arterial wall, by an ad-hoc location (at time t
0) be transmitted to another ad-hoc location (at time t
1) Mean Speed.PWV is an index being used for measuring arterial elasticity and expansivity, and arterial stiffness increases can make PWV numerical value rise, and arterial elasticity weakens PWV numerical value can be made to decline, so pass through measurement PWV numerical value, we can estimate elasticity and the expansivity of tremulous pulse.PWV numerical value or an extremely useful Noninvasive index, make the early discovery of the multiple blood vessel kind diseases such as arteriosclerosis, hypertension, hyperlipemia, diabetes and nephropathy and diagnosis become possibility.
Arteriosclerotic detection is more and more subject to the attention of medical circle, and its testing result can remind the arteriosclerotic situation of patient oneself, and treatment in time or the corresponding exercise of increase, change dietary structure.
How the corresponding signal of human body, with very large noise, extracts the problem that actual signal is medical detecting Instrument facing in the signal of critical noisy.
Utility model content
The purpose of this utility model is exactly there is the accurate not defect of testing result and the pulse wave propagate rate-measuring device that provides a kind of easy to use, good stability to overcome above-mentioned prior art.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of pulse wave propagate rate-measuring device, comprise ECG electrode, fluctuation sensor, electrocardiosignal modulate circuit, pulse wave signal modulate circuit, data collecting card and the host computer containing virtual instrument, the outfan of described ECG electrode connects the input of electrocardiosignal modulate circuit, the outfan of described fluctuation sensor connects the input of pulse wave signal modulate circuit, the input of the outfan of described electrocardiosignal modulate circuit and the outfan of pulse wave signal modulate circuit connection data capture card respectively, the outfan of described data collecting card connects the input of host computer.
Described fluctuation sensor comprises PVDF piezoelectric membrane.
Described electrocardiosignal modulate circuit comprises the one-level differential amplifier circuit, low-pass filter circuit, high-pass filtering circuit and the second amplifying circuit that connect successively, the input of described one-level differential amplifier circuit connects the outfan of ECG electrode, the input of the outfan connection data capture card of described second amplifying circuit.
Described pulse wave signal modulate circuit comprises the one-level differential amplifier circuit, low-pass filter circuit, high-pass filtering circuit and the second amplifying circuit that connect successively, the input of described one-level differential amplifier circuit connects the outfan of fluctuation sensor, the input of the outfan connection data capture card of described second amplifying circuit.
Described one-level differential amplifier circuit comprises AD620 difference amplifier.
Described low-pass filter circuit, high-pass filtering circuit and second amplifying circuit comprise OPA2277 chip respectively.
Described data collecting card is USB-6008 data collecting card.
The outfan of described data collecting card connects the USB interface of host computer by USB data line.
Described host computer is connected with display screen and printer.
Compared with prior art, this utility model has the following advantages:
1) by nursing one's health electrocardiosignal and pulse wave signal, gather, then carried out the measurement of pulse wave transfer rate by the host computer containing virtual instrument, cost is low, and detection speed is fast, and stability is high.
2) select PVDF piezoelectric membrane as the sensing element of pulse transducer, the pulse wave signal extracted is truer, the human pulse ripple signal surveyed is millivolt level signal, electrocardiosignal and pulse wave signal need through one-level differential amplifier circuits simultaneously, low-pass filter circuit, AD conversion is carried out by data collecting card again after the conditioning of high-pass filtering circuit and second amplifying circuit, and USB-6008 data collecting card is the multifunctional data acquisition card based on USB2.0 serial port, 8 analog input terminals are had to can be used for receiving electrocardiosignal and pulse wave signal, thus can the impact of effectively overcoming noise, improve PWV accuracy of detection, testing result is accurately reliable.
3) structure is simple, easy and simple to handle, practical: the electrocardiosignal, the pulse wave signal that are received data collecting card transmission by host computer, carry out pulse wave analysis process and storage, and by sharpness screen and printer, the PWV result measured is shown in time and printed.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation;
Fig. 2 is pulse wave signal modulate circuit schematic diagram in this utility model.
In figure: 1, ECG electrode, 2, fluctuation sensor, 3, electrocardiosignal modulate circuit, 4, pulse wave signal modulate circuit, 5, data collecting card, 6, host computer, 7, display screen, 8, printer, 9, one-level differential amplifier circuit, 10, low-pass filter circuit, 11, high-pass filtering circuit, 12, second amplifying circuit.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail.The present embodiment is implemented premised on technical solutions of the utility model, give detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 1, a kind of pulse wave propagate rate-measuring device comprises ECG electrode 1, fluctuation sensor 2, electrocardiosignal modulate circuit 3, pulse wave signal modulate circuit 4, data collecting card 5 and the host computer 6 containing virtual instrument, the outfan of ECG electrode 1 connects the input of electrocardiosignal modulate circuit 3, the outfan of fluctuation sensor 2 connects the input of pulse wave signal modulate circuit 4, the input of the outfan of electrocardiosignal modulate circuit 3 and the outfan of pulse wave signal modulate circuit 4 connection data capture card 5 respectively, the outfan of data collecting card 5 connects the input of host computer 6.Host computer 6 is connected with for showing and the display screen 7 of print pulse wave measurements and printer 8.
Wherein, fluctuation sensor 2 comprises PVDF piezoelectric membrane, measuring range 0 ~ 50g, trueness error≤5%F.S, sensitivity >=20mV/F.S, and the pulse wave signal of extraction is truer, and the human pulse ripple signal surveyed is millivolt level signal.
Electrocardiosignal modulate circuit 3 and pulse wave signal modulate circuit 4 comprise the one-level differential amplifier circuit 9, low-pass filter circuit 10, high-pass filtering circuit 11 and the second amplifying circuit 12 that are connected successively respectively, the input correspondence of one-level differential amplifier circuit 9 connects the outfan of ECG electrode 1 and fluctuation sensor 2, the input of the outfan connection data capture card 5 of second amplifying circuit 12.Fig. 2 is the schematic diagram of pulse wave signal modulate circuit 4, and one-level differential amplifier circuit 9 comprises AD620 difference amplifier and peripheral circuits (comprising resistance R1 and electric capacity C1, C2) thereof.Low-pass filter circuit 10 comprises OPA2277 chip and peripheral circuits (comprising resistance R2, R3, R4, R5 and electric capacity C3) thereof, high-pass filtering circuit 11 comprises OPA2277 chip and peripheral circuits (comprising resistance R6, R7, R8 and electric capacity C4, C5) thereof, and second amplifying circuit 12 comprises OPA2277 chip and peripheral circuits (comprising resistance R9, R10, R11, R12 and electric capacity C6, C7) thereof.Wherein, OPA2277 chip is double operational circuit, U2A and U2B is the different piece in same chip.The acquired signal of ECG electrode 1, fluctuation sensor 2 is passed through differential amplifier pre-amp output signal by two signal conditioning circuits, improve signal to noise ratio, the high-frequency noise in signal is removed again by low-pass filter circuit 10, removed the DC component in signal again by high-pass filtering circuit 11, then be met the analogue signal of AD sampling condition by second amplifying circuit 12.
The USB-6008 data collecting card that data collecting card 5 is produced for NI company.This card is the multifunctional data acquisition card based on USB2.0 serial port, and have 8 analog input terminals to can be used for receiving electrocardiosignal and pulse wave signal, every road input range is ± 10V, 10Ks/s, 12 bit resolutions.It is converted analogue signal to digital signal and is sent into the USB interface of host computer 6 by USB data line, processes further.
Host computer 6 is the computers of the LabVIEW software platform be integrated with based on virtual instrument Programming in Digital Image Processing, realize functions such as signal processing, analysis, display, storage, wave shape playback, signal smoothing filtering, Periodic identification, baseline adjustment, Feature point recognition, make full use of the powerful advantages of host computer 6 on signal testing and analysis containing virtual instrument, make the checkout gear construction cycle short, flexible and efficient.Interval (i.e. pulse wave transmission time PTT) and the distance L of individual features point is obtained from the oscillogram of monocyclic electrocardiosignal and pulse wave signal, then by the computing formula of PWV:
obtain PWV.
Operation principle:
ECG electrode 1 gathers electrocardiosignal, fluctuation sensor 2 gathers pulse wave signal (pulse wave signal of such as radial artery), and the corresponding signal collected is sent to corresponding signal conditioning circuit, the amplification of signal is carried out by electrocardiosignal modulate circuit 3 and pulse wave signal modulate circuit 4, filtering, current potential adjusts, again the signal after conditioning is sent to data collecting card 5, analog voltage signal is carried out AD conversion by data collecting card 5, again the signal after AD conversion is sent to host computer 6, host computer 6 utilizes integrated virtual instrument to electrocardiosignal, pulse wave signal carries out processing and analyzing, and the result after Treatment Analysis is exported, the report display measurement result that high-resolution liquid crystal type display screen 7 and printer 8 print.
Claims (9)
1. a pulse wave propagate rate-measuring device, it is characterized in that, comprise ECG electrode, fluctuation sensor, electrocardiosignal modulate circuit, pulse wave signal modulate circuit, data collecting card and the host computer containing virtual instrument, the outfan of described ECG electrode connects the input of electrocardiosignal modulate circuit, the outfan of described fluctuation sensor connects the input of pulse wave signal modulate circuit, the input of the outfan of described electrocardiosignal modulate circuit and the outfan of pulse wave signal modulate circuit connection data capture card respectively, the outfan of described data collecting card connects the input of host computer.
2. a kind of pulse wave propagate rate-measuring device according to claim 1, it is characterized in that, described fluctuation sensor comprises PVDF piezoelectric membrane.
3. a kind of pulse wave propagate rate-measuring device according to claim 1, it is characterized in that, described electrocardiosignal modulate circuit comprises the one-level differential amplifier circuit, low-pass filter circuit, high-pass filtering circuit and the second amplifying circuit that connect successively, the input of described one-level differential amplifier circuit connects the outfan of ECG electrode, the input of the outfan connection data capture card of described second amplifying circuit.
4. a kind of pulse wave propagate rate-measuring device according to claim 1, it is characterized in that, described pulse wave signal modulate circuit comprises the one-level differential amplifier circuit, low-pass filter circuit, high-pass filtering circuit and the second amplifying circuit that connect successively, the input of described one-level differential amplifier circuit connects the outfan of fluctuation sensor, the input of the outfan connection data capture card of described second amplifying circuit.
5. a kind of pulse wave propagate rate-measuring device according to claim 3 or 4, is characterized in that, described one-level differential amplifier circuit comprises AD620 difference amplifier.
6. a kind of pulse wave propagate rate-measuring device according to claim 3 or 4, it is characterized in that, described low-pass filter circuit, high-pass filtering circuit and second amplifying circuit comprise OPA2277 chip respectively.
7. a kind of pulse wave propagate rate-measuring device according to claim 1, is characterized in that, described data collecting card is USB-6008 data collecting card.
8. a kind of pulse wave propagate rate-measuring device according to claim 1, is characterized in that, the outfan of described data collecting card connects the USB interface of host computer by USB data line.
9. a kind of pulse wave propagate rate-measuring device according to claim 1, it is characterized in that, described host computer is connected with display screen and printer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520239751.9U CN204698543U (en) | 2015-04-20 | 2015-04-20 | A kind of pulse wave propagate rate-measuring device |
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| CN201520239751.9U CN204698543U (en) | 2015-04-20 | 2015-04-20 | A kind of pulse wave propagate rate-measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108742588A (en) * | 2018-04-12 | 2018-11-06 | 中国医学科学院生物医学工程研究所 | A kind of pulse wave velocity detection method and device |
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2015
- 2015-04-20 CN CN201520239751.9U patent/CN204698543U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108742588A (en) * | 2018-04-12 | 2018-11-06 | 中国医学科学院生物医学工程研究所 | A kind of pulse wave velocity detection method and device |
| CN108742588B (en) * | 2018-04-12 | 2020-11-20 | 中国医学科学院生物医学工程研究所 | Pulse wave velocity detection method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shanghai wisdom medical instruments Co., Ltd. Assignor: Shanghai University of Engineering Science Contract record no.: 2016310000027 Denomination of utility model: Pulse wave propagation speed detection device Granted publication date: 20151014 License type: Exclusive License Record date: 20160526 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210720 Address after: 313299 Building 1, 926 Changhong East Street, Fuxi street, Deqing County, Huzhou City, Zhejiang Province Patentee after: Zhejiang Huiqin Medical Devices Co.,Ltd. Address before: 201620 No. 333, Longteng Road, Shanghai, Songjiang District Patentee before: SHANGHAI University OF ENGINEERING SCIENCE |