CN206612785U - A kind of pulse and blood erythrocyte concentration monitor - Google Patents
A kind of pulse and blood erythrocyte concentration monitor Download PDFInfo
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- CN206612785U CN206612785U CN201621361977.7U CN201621361977U CN206612785U CN 206612785 U CN206612785 U CN 206612785U CN 201621361977 U CN201621361977 U CN 201621361977U CN 206612785 U CN206612785 U CN 206612785U
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- signal
- photodetector
- pulse
- finger
- erythrocyte concentration
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Abstract
The utility model discloses a kind of pulse and blood erythrocyte concentration monitor, including gripping finger device, gripping finger device one end open and it is interior be provided with cavity, the upper and lower surface of cavity is relative respectively to be provided with infrared light supply and photodetector, and gripping finger device is connected with storage arithmetic unit and display device successively；The finger finger belly that gripping finger device clamps testee transmits original light intensity signal after infrared light supply irradiation finger, the original light intensity signal of photodetector reception is converted into electric signal and is stored and handled to gather the data in pixel coverage and electric signal is passed into storage arithmetic unit, and obtained pulse data and blood erythrocyte concentration data is shown by display device.The utility model is using the photodetector collection signal based on CMOS cameras, detectivity and precision are high, and light intensity signal is handled based on the method for signal intensity frequency domain modulation, dicrotic wave can be decreased or even eliminated to improve measurement result, and computing is simple, greatly reduction computation complexity, saves storage area.
Description
Technical field
The utility model is related to medical electronics detection and pulse wave signal detection and process field, more particularly to a kind of pulse
And blood erythrocyte concentration monitor.
Background technology
With the rhythm of life increase and the increase of operating pressure of people, the cardiovascular disease incidence rate such as heart disease constantly increases
Plus, cardiovascular coherent detection is also increasingly paid close attention to by people.Pulse contains the important letter of human body cardiovascular events
Breath, has substantial connection, it is possible to cardiovascular situation is judged by measuring pulse with a variety of diseases.
At present, measurement pulse mainly has the method for pressure type, diagnosis by feeling the pulse formula, electrocardio formula and photo-electric, and pressure type is generally used
The pressure sensor that pressure cell is made is realized, with complex process, and manufacturing cost is high, and equipment is heavy, not light and easy wrong report,
The shortcomings of failing to report.Diagnosis by feeling the pulse formula, Chinese medicine pulse diagnostic techniques is exactly pulses measure application fruitful in the traditional Chinese medical science, but by people
For influence factor it is larger, measurement accuracy is not high；Electrocardio formula is in measured by the tape wrapping by EGC sensor is provided with
The chest of person, determines the heartbeat of person to be measured to determine the Pulse Rate of person to be measured, this method operation is numerous in electrocardio mode
Trivial, equipment cost is high, and measured does not feel well when detecting, and photo-electric then detects quilt using photoelectric sensor with photovoltaic
The pulsation of measure person's blood vessel, to determine the Pulse Rate of person to be measured, the latter mainly uses the method for photoelectricity volume, photoplethymograph
There is dicrotic wave in measurement process, measurement result is interfered, cause heart rate measurements inaccurate, and blood erythrocyte concentration
It can be Diseases diagnosis medically, clinically, blood erythrocyte concentration can be used as diagnosis hyperadrenalism
Important evidence, blood erythrocyte concentration is important one of angiocardiopathy detection, while the diagnoses and treatment of lung disease can be aided in,
It uses also relatively wider in terms of not only clinically having utilization, and the physical efficiency of test sportsman, and rarely has monitor at present
The need for pulsation and blood erythrocyte concentration can be measured simultaneously to meet patient, thus there is provided a kind of pulsation measurement result it is accurate and
The monitor that blood erythrocyte concentration can be measured simultaneously is highly desirable to.
Utility model content
The purpose of this utility model is to provide a kind of use based on the method for signal intensity frequency domain modulation and believed to handle intensity
Number and decrease or even eliminate dicrotic wave and improve the pulse and blood erythrocyte concentration monitor of measurement result to solve prior art
It is not enough.
The utility model is achieved through the following technical solutions utility model purpose：
A kind of pulse and blood erythrocyte concentration monitor, including gripping finger device, gripping finger device one end open and it is interior be provided with chamber
Body, the upper and lower surface of cavity is relative respectively to be provided with infrared light supply and photodetector, and gripping finger device is successively with storing arithmetic unit
With display device connection；
Gripping finger device, the finger finger belly part for clamping testee；
Infrared light supply, for irradiating the finger of measured and transmiting original light intensity signal；
Photodetector, for receive the original light intensity signal that infrared light supply is sent convert optical signals to electric signal with
Gather the data in pixel coverage and electric signal is passed into storage arithmetic unit, photodetector is to be based on CMOS cameras, detection
Sensitivity and precision are high；
Arithmetic unit is stored, for storing and handling original light intensity signal；
Display device, for showing pulse data and blood erythrocyte concentration data after storing arithmetic unit processing.By
This, by setting infrared light source device opposing upper and lower and photoelectric detector in the cavity of gripping finger device, collection finger is through red
The light intensity signal transmitted after outer light source irradiation, after photodetector is pre-processed to signal, storage arithmetic unit is adopted
Average modulation depth is obtained with the method based on signal intensity frequency domain modulation to obtain blood erythrocyte concentration and pulse frequency, and
Blood erythrocyte concentration and pulse frequency are shown by display device, detectivity and precision are high, beneficial to quickly calculating red blood cell
Concentration and pulsation frequency, improve operating efficiency, are of great significance for the pulse tool that emergency measures measured.
Further, the cavity of the gripping finger device is U-shaped, and the lower surface of cavity is visited provided with a row or multi-row photoelectricity
Device is surveyed, the horizontal arranged width of photodetector is less than human finger width, thus, and overall photodetector width is set
It is set to less than adult's gripping finger width, the photodetector installed in the middle part of gripping finger device is measured with regard to arch-rival's finger belly, easily
Measure the relevant parameters such as pulse, it is to avoid because photodetector is more than finger area, it is inaccurate that photodetector can receive part
Signal, it is average after the accuracy that finally measures is influenceed after evaluation.
Further, the infrared light supply is corresponded and concordant with photodetector, and thus, photodetector can
To be easier to measure the relevant parameters such as pulse, it is to avoid because infrared light supply and photodetector differ a pair the portion received at once
Sub-signal has loss, causes measurement result to influence the accuracy of final measurement data without generality.
Further, the storage arithmetic unit is using the method processing luminous intensity letter based on light signal strength frequency domain modulation
Number.
Pulse and blood erythrocyte concentration monitor that the utility model is provided, compared with prior art with following beneficial effect
Really：
1st, monitor is used and decreased or even eliminated based on the method for signal intensity frequency domain modulation to handle light intensity signal
Dicrotic wave improves the accuracy of measurement result, and need not only need the simply fortune such as FFT using the complicated arithmetic operation such as convolution
Calculate, greatly reduce computation complexity, save storage area, be easy to chip microcontroller.
2nd, in the pulse blood oxygen instrument that can be both integrated in multi-parameter detection, independent pulse and blood flow of the tip can be used as again
Monitor is measured, middleware processes program is also used as, is easy to unlimited monitoring and networked instruments, and brief and practical is without artificial
Repeat to pre-process, required resource is few during implementation, and software and hardware expense is low.
3rd, whole monitor overall volume is small, the monitoring of pulse beneficial to placing and to being monitored person, saves space, improves
The utilization rate in space, and monitoring method is easy, it is applied widely, it may be used in hospital or family.
4th, signal is gathered using the photodetector based on CMOS cameras, detectivity and precision are high, beneficial to quick meter
Red blood cell concentration and pulsation frequency are calculated, operating efficiency is improved, has important meaning for the pulse that emergency measures measured
Justice.
Brief description of the drawings
Fig. 1 is the utility model pulse and a kind of structural representation of embodiment of blood erythrocyte concentration monitor；
Fig. 2 is the structural representation of gripping finger device in Fig. 1；
Fig. 3 is the utility model pulse and the flow chart of blood erythrocyte concentration monitoring method；
Fig. 4 is the part light intensity signal figure that photoelectric detector is collected；
Fig. 5 is the secondary signal value figure obtained after Fourier transformation；
Fig. 6 is average modulation depth time-domain diagram；
Wherein：1-gripping finger device, 2-infrared light supply, 3-photoelectric detector, 4-storage arithmetic unit, 5-display dress
Put, 6-cavity.
Embodiment
Embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.Wherein, accompanying drawing is only used for
Exemplary illustration, expression is only schematic diagram, rather than pictorial diagram, it is impossible to be interpreted as the limitation to this patent；In order to preferably say
Bright embodiment of the present utility model, some parts of accompanying drawing have omission, zoomed in or out, and do not represent the size of actual product；
It will be understood by those skilled in the art that some known features and its explanation may be omitted and will be understood by accompanying drawing.
The same or analogous part of same or analogous label correspondence in the accompanying drawing of the utility model embodiment；In this practicality
In new description, it is to be understood that if the orientation or position relationship that have the instructions such as term " on ", " under ", "left", "right" are
Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicate
Or imply that signified device or element must have specific orientation, to be retouched in specific azimuth configuration and operation, therefore accompanying drawing
Term the being given for example only property explanation of position relationship is stated, it is impossible to be interpreted as the limitation to this patent, for the common skill of this area
For art personnel, the concrete meaning of above-mentioned term can be understood as the case may be.
As depicted in figs. 1 and 2, a kind of pulse and blood erythrocyte concentration monitor, including gripping finger device 1, gripping finger device one
End opening and it is interior be provided with cavity 6, the upper and lower surface of cavity 6 is relative respectively to be provided with infrared light supply 2 and photodetector 3, gripping finger dress
1 is put to be connected with storage arithmetic unit 4 and display device 5 successively；The cavity 6 of gripping finger device 1 is taken the shape of the letter U, and the lower surface of cavity 6 is provided with
Two row's photodetectors 3；In order to improve the accuracy of measurement, the horizontal arranged width of photodetector 3 is less than human finger
Width, photodetector 3 is just mainly measured finger finger belly, thus easily measures the relevant parameters such as pulse, it is to avoid because photoelectricity is visited
Survey device 3 and be more than finger area, photodetector 3, which can be received, influences final survey after evaluation after the inaccurate signal in part makes averagely
The accuracy of amount；
In addition, infrared light supply 2 is corresponded and concordant with photodetector 3, it can avoid because of infrared light supply 2 and photodetection
The part signal received at once that differs a pair of device 3 has loss, causes measurement result to influence the standard of data without generality
True property.
Wherein, gripping finger device 1, the finger finger belly part for clamping testee, photoelectric detector 3 protrudes gripping finger device
The surface of 1 cavity 6；Infrared light supply 2, for irradiating the finger of measured and transmiting original light intensity signal；Photodetector
3, electric signal is converted optical signals to gather in pixel coverage for receiving the original light intensity signal that infrared light supply 2 is sent
Electric signal is simultaneously passed to storage arithmetic unit 4 by data；Arithmetic unit 4 is stored, for storing and handling original light intensity signal；It is aobvious
Showing device 5, for showing through storing pulse data and blood erythrocyte concentration data after arithmetic unit 4 is handled.
When carrying out pulse and blood erythrocyte concentration monitoring using the device, measured stretches into finger the U-shaped of gripping finger device 1
In cavity 6, finger finger belly is close to the side of photoelectric detector 3 in cavity 6, as shown in figure 4, irradiating measured through infrared light supply 2
Dorsal surfaces of fingers after the original light intensity signal that transmits by photodetector 3 gather after through noise processed and Fourier transform pair
Signal is pre-processed, then obtains blood erythrocyte concentration through storing the method based on signal intensity frequency domain modulation in arithmetic unit 4,
Pulsation data are obtained through Fourier transform, obtained blood erythrocyte concentration finally will be calculated by display device 5 and pulsation data show
Show to come.
As shown in figure 3, when use is monitored based on above-mentioned pulse and blood erythrocyte concentration monitor, specifically including following
Step：
S1. the acquisition rate of the photodetector 3 is set to F>350fps, the acquisition rate of photodetector 3
Setting is to be based on following principle：The maximum pulse of normal person is per minute at 210 times, if gathering the data of 100 frames in one minute, and
The picking rate f of photodetector 3 is greater than the speed of pulse so as to collect complete, accurate, continuous intensity
Signal, i.e. 100/F<60/210, obtain F>350fps；
S2. strength signal and the storage that light is transmitted after tested position is irradiated through infrared light supply 2, the strength signal are gathered
The collection for being light intensity signal in original light intensity signal untreated, comprising heartbeat message, S2 is measured by a finger
It is put into gripping finger device 1, the tested finger of the irradiation of infrared light supply 2 of upper surface in the cavity 6 of gripping finger device 1, by the cavity of gripping finger device 1
The photodetector 3 of 6 lower surface receives original light intensity signal；
S3. the light intensity signal of gained in S2 is pre-processed, including noise is removed, using Fourier transformation method
Obtain and obtain frequency-region signal frequency in the signal on frequency domain, S3 to original light intensity signal progress Fast Fourier Transform (FFT) (abbreviation FFT)
Spectral intensity Ij(u)：M data are taken to carry out FFT every time, 10, the interval data per two neighboring signal value, i.e., to (1+10
(j-1)) open after data carry out FFT to (m+10 (j-1)) data and obtain j-th of signal value, such as by the 1st data to m
Open data progress FFT and obtain the first signal value of correspondence, the 11st data to m+10 data carry out FFT and obtain secondary signal value,
As shown in Figure 5.Frequency-region signal spectrum intensity Ij(u) following relational expression can use to represent：
Wherein, j is signal value sequence, and t is the time, and u is frequency,J-th of Domain Dynamic signal is represented,Table
Show j-th of frequency domain stationary singnal；
S4. it is deep using modulation is calculated based on signal intensity frequency-domain modulation approach to the signal of preprocessed gained in S3
Degree, the modulation depth calculated is modulated in real time depth, and the frequency-domain modulation approach based on strength signal is in S4：Take what is obtained in S3
Each signal value spectrum intensity Ij(u), comprising static frequency and dynamic frequency, the frequency of static frequency in certain limit is extracted respectively
Rate and the frequency of dynamic frequency domain simultaneously seek intensity, then the dynamic frequency strength ratio static frequency intensity extracted is obtained modulation deeply
Degree, and modulation depth and blood erythrocyte concentration direct proportionality, draw blood erythrocyte concentration, but do not influenceed by VPV；
S5. setting photodetector 3 has n, and the n modulation depth obtained in S4 is averaging, as shown in fig. 6, will simultaneously
Time and average modulation depth coordinate representation, in the case of n photodetector, all signal value sequences exist with the time
One-to-one relationship, the modulation depth obtained in S4 is averaged, so as to draw real-time blood erythrocyte concentration, what is calculated is averaged
Modulation depth is real-time, average modulation depth MDjFormula be represented by：
Obtained average modulation depth value is the average modulation depth value in time domain, to MDjCarry out FFT,
FFT(MDj)=A (δ (f+f0)+δ(f-f0))
The pulse frequency f that measured is obtained at peak is read, wherein A is spectrum signal amplitude, f0For the frequency corresponding to peak value；
S6. Fast Fourier Transform (FFT) is carried out to the average modulation depth obtained in S5 and obtains frequency domain figure, then read peak, to obtain arteries and veins
Fight data, and by display device display pulse data and blood erythrocyte concentration.
Above-described is only some embodiments of the present utility model.For the person of ordinary skill of the art,
On the premise of the utility model creation design is not departed from, various modifications and improvements can be made, these belong to this practicality
New protection domain.
Claims (4)
1. a kind of pulse and blood erythrocyte concentration monitor, it is characterised in that including gripping finger device, gripping finger device one end open and
Interior to be provided with cavity, the upper and lower surface of cavity is relative respectively to be provided with infrared light supply and photodetector, gripping finger device successively with storage
Arithmetic unit and display device connection；
Gripping finger device, the finger finger belly part for clamping testee；
Infrared light supply, for irradiating the finger of measured and transmiting original light intensity signal；
Photodetector, electric signal is converted optical signals to gather for receiving the original light intensity signal that infrared light supply is sent
Electric signal is simultaneously passed to storage arithmetic unit by data in pixel coverage；
Arithmetic unit is stored, for storing and handling light intensity signal；
Display device, for showing pulse data and blood erythrocyte concentration data after storing arithmetic unit processing.
2. pulse according to claim 1 and blood erythrocyte concentration monitor, it is characterised in that the chamber of the gripping finger device
Body is U-shaped, and the lower surface of cavity is provided with a row or multi-row photodetector, and the horizontal arranged width of photodetector is small
In human finger width.
3. pulse according to claim 1 and blood erythrocyte concentration monitor, it is characterised in that the infrared light supply and light
Electric explorer is corresponded and concordant.
4. pulse according to claim 1 and blood erythrocyte concentration monitor, it is characterised in that the storage arithmetic unit
Light intensity signal is handled using the method based on light signal strength frequency domain modulation.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621361977.7U CN206612785U (en) | 2016-12-13 | 2016-12-13 | A kind of pulse and blood erythrocyte concentration monitor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621361977.7U CN206612785U (en) | 2016-12-13 | 2016-12-13 | A kind of pulse and blood erythrocyte concentration monitor |
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| Publication Number | Publication Date |
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| CN206612785U true CN206612785U (en) | 2017-11-07 |
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| CN201621361977.7U Expired - Fee Related CN206612785U (en) | 2016-12-13 | 2016-12-13 | A kind of pulse and blood erythrocyte concentration monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691410A (en) * | 2016-12-13 | 2017-05-24 | 佛山科学技术学院 | Pulse and red blood cell concentration monitoring instrument and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106691410A (en) * | 2016-12-13 | 2017-05-24 | 佛山科学技术学院 | Pulse and red blood cell concentration monitoring instrument and method |
| CN106691410B (en) * | 2016-12-13 | 2024-01-16 | 佛山科学技术学院 | Pulse and red blood cell concentration monitor and method |
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