CN104856656A - Fiber bragg grating pulse testing head, novel three-path optical pulse testing system and method - Google Patents

Fiber bragg grating pulse testing head, novel three-path optical pulse testing system and method Download PDF

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CN104856656A
CN104856656A CN201510284422.0A CN201510284422A CN104856656A CN 104856656 A CN104856656 A CN 104856656A CN 201510284422 A CN201510284422 A CN 201510284422A CN 104856656 A CN104856656 A CN 104856656A
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optical fiber
fiber grating
pulse
measuring
spring leaf
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CN104856656B (en
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贾大功
陈静
张红霞
明东
刘铁根
张以谟
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Tianjin University
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/68Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6813Specially adapted to be attached to a specific body part
    • A61B5/6825Hand
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B2562/00Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
    • A61B2562/02Details of sensors specially adapted for in-vivo measurements
    • A61B2562/0233Special features of optical sensors or probes classified in A61B5/00
    • A61B2562/0238Optical sensor arrangements for performing transmission measurements on body tissue

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Cardiology (AREA)
  • Physiology (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

The invention discloses a fiber bragg grating pulse testing head, a novel three-path optical pulse testing system and a method. The system comprises a fiber bragg grating pulse testing head part used for measuring the Cunkou portion, a fiber bragg grating pulse testing head part used for measuring the Guanshang portion and a fiber bragg grating pulse testing head part used for measuring the Chizhong portion. The three parts are arranged in a space formed by a supporting plate (11) and a base (2); besides, a linear relation between the central wavelength of reflected waves of a fiber bragg grating and pulse waves is established through a leaf spring structure, and the reflection wavelength of the measuring fiber bragg grating (6) is taken as a measuring object. Compared with the prior art, an optical method is adopted for extracting pulse signals of the Cun, Guan and Chi portions at the same time, the measuring device has the advantages of being simple in structure, high in measuring accuracy, good in stability and the like, and the optical measuring method is put forward for overcoming the inherent defects of an electrical measuring method and is high in reliability and accuracy.

Description

Fiber grating pulse test head, novel three road optics pulse test system and methods
Technical field
The present invention relates to physiology pulses measure technology, particularly relate to a kind of novel optics pulse test system and method for testing.
Background technology
Pulse-taking is the important component part of the traditional Chinese medical science, and it is the basis of tcm clinical practice application.Along with the quickening of theory of Chinese medical science process in recent years, high-tech is introduced the traditional Chinese medical science, replace with precision instrument the mode that Traditional Chinese Medicine feels the pulse imperative.In recent years, in succession developed multiple different types of pulse test system both at home and abroad, as the electronics electropulsograph etc. that Pekinese TP-CPS type analysis instrument, ZM-I, ZM-III type electropulsograph of Shanghai Univ. of Traditional Chinese Medicine, German Paik and Yoo develop.Pulse test module is as the important component part of pulse testing device, and the quality of its performance has the pulse wave quality exported the most directly to be affected.
At present, the development that the research of being at home and abroad correlated with for pulses measure have passed through decades, wherein, the kind of sensor applied in pulse test module is various, different properties, wherein applies most often: electric measurement method and measuring method.Early, technology is relative maturity also in electric measurement method starting.Electric measurement method most is representational is piezoelectric type and pressure resistance type.But electrical way measure often have measuring device volume large, be subject to the shortcomings such as electromagnetic interference, precision are low.
The measuring principle of piezoelectric type measuring method realizes piezoelectricity conversion based on piezoelectric effect, and pulse signal is converted into the signal of telecommunication.What patent No. CN203447277U " a kind of wrist carried pulse transducer " adopted is exactly piezoelectric type measuring method.This invention proposes a kind of wrist carried pulse transducer, this pulse transducer is made of metal housing and is connected to wrist strap again, be provided with by pcb board, the pulse sensing mechanism that covers the piezoelectric membrane on pcb board and form with the pulse contact of piezoelectric membrane close contact in housing, the aperture that pulse contact is provided with through housing and human contact; This pulse transducer by mechanical signal is converted to the signal of telecommunication, then obtains pulse after being processed by the signal of telecommunication.This measuring device structural volume is little, and reduce the external interference such as electromagnetism by metal shell, but the shortcoming that the certainty of measurement itself also existed due to piezoelectric type metering system is low, although adopt corresponding measure to weaken the interference of electromagnetism to measurement device, but electromagnetic interference still exists, so this equipment cannot use under the environment that electromagnetic interference is strong.
The measuring principle of pressure resistance type measuring method is piezoresistive effect, is realized the conversion of the electrical quantities of mechanical quantity, pulse signal is converted into the signal of telecommunication by piezoresistive transducer.What patent No. CN103622680A " traditional Chinese pulse-diagnosis instrument " adopted is exactly pressure resistance type measuring method.This invention proposes the pulse-taking instrument system comprising arteries and veins pillow, sensor cluster, breath gate controlling system and computer, wherein sensor have employed the piezoresistive transducer vector being no less than 5 × 1, this sensor vector is arranged in the array of 5mm × 1.5mm, each sensor individual packages.This invention have also been devised and moves up and down by slide plate the structure regulating pulse pressure.This device takes full advantage of the feature of piezoresistive transducer, and cost is low, but this measuring device exists zero temperature point drift, and needing increases temperature-compensation circuit.
Compared to the electric measurement method of starting to walk comparatively early, the developing history of measuring method is shorter, but presents development trend with rapid changepl. never-ending changes and improvements.Current measuring method is mainly divided into based on Photoelectric Detection and Fibre Optical Sensor two kinds of modes.The patent No. is CN1119517 " biological information detecting device and wrist carried pulse measurement device " is based on Photoelectric Detection measuring method, and according to photoplethymograph, by the monitoring of the reflected light to finger tail vein, indirect detection goes out pulse wave signal.This measuring method structure is simple, favorable repeatability, and proposes application shade and reduce due to outside illumination variation and cause the mistake of pulse wave to be surveyed.But still the impact that secondary reflection light disturbs cannot be avoided.This measurement device precision is low, and poor stability.
The patent No. measuring principle that to be CN102772200A " pulse-taking signal transducer probe and optical fiber pulse diagnostic information acquisition system " be based on Fibre Optical Sensor.Propose method fiber grating being applied to pulses measure, and have devised pulse-taking signal testing module.But the impact of variations in temperature on measurement result is not considered in this invention, because grating pair temperature is very sensitive, very large interference can be produced to the measurement of strain.
Pulse wave spectrum is particular about cun, guan and chi, three places at the wrist where the pulse is usually taken, taking pulse lightly, moderately and heavily, namely applies different power to diagnose to multiple position simultaneously, to improve the accuracy of pulse signal, comprehensive and reliability.So the pulse test module of a new generation also needs to possess simultaneously to the function that multiple position is detected and transmitted.Therefore, how test module being fixed on measuring point is accurately, fast and easily one of evaluation test whether excellent important indicator.
The patent No. be CN101732039A " a kind of C Pneumoniae pulse wave detection sensor fixture " based on pressure sensing by installing two or more piezoelectric transducer to realize the detection to multiposition pulse wave signal.This measuring device comprises the upper clamp and lower clamp for clamping wrist, and both are connected by rotating shaft, arranges spring leaf and comes to apply pressure to measuring point, realize the measurement to multiple location between upper clamp and lower clamp.This measuring device entirety is fixed on one and is similar on the device of clip, so this measuring device is except aforesaid electric measurement method is easily by except the shortcomings such as electromagnetic signal interference, also there is the shortcoming cannot carrying out quantified controlling to measuring point place force size, be easy in this case occur that producing blood vessel distortion because clip force is excessive causes metrical information to be forbidden.
Although foregoing invention all achieves pulse signal and measures, but measuring device all has certain defect, such as, although electric measurement method cost is low, commercial industries develops relative maturity, but measure clever density low, be easily disturbed, error is large, the defects such as spot measurement make it can not obtain enough pulse informations, and existing Multi point measuring apparatus is complicated, adjustment process is loaded down with trivial details, also limit the promotion and application of this system.And in existing measuring method, although photoplethymograph makes simple in measurement system structure, be easily subject to the impact of exterior light photograph and secondary reflection light, cause certainty of measurement and stability to decline; And although grating measuring method certainty of measurement is high, be easily subject to the impact of temperature, need to be improved in measuring system.Meanwhile, from the angle of specialty, when designing pulse test system, need the pulse wave signal simultaneously recording cun, guan and chi, three places at the wrist where the pulse is usually taken three positions.
Therefore the present invention draws the experience and lessons of foregoing invention, proposes a kind ofly to utilize fiber grating sensing technology, combines and possess stability and comfort level and the novel multimetering pulse-taking instrument eliminating the measuring device of temperature impact.
Summary of the invention
In order to overcome the problem of above-mentioned prior art, the present invention proposes a kind of fiber grating pulse test head, novel three road optics pulse test system and methods, utilizing fiber grating sensing technology to realize the detection of human pulse signal.
The present invention proposes a kind of fiber grating pulse test head, comprise the chip architecture of the spring that measuring optical fiber grating 6, spring leaf 3 and support bar 4 are formed, support bar 4, through the aperture at spring leaf 3 two ends, is fixed on protective cradle 1 and division board 9; The power effect of the pulse wave vertical direction vibrations that spring leaf 3 is subject to is undertaken spacing by support bar 4, and spring leaf 3 drives the measuring optical fiber grating 6 be fixed on spring leaf 1 to be stretched in the horizontal direction, produces axial deformation; The echo centre wavelength produced in the measuring optical fiber grating 6 of deformation can produce skew; Measuring optical fiber grating 6 is fixed on protective cradle 1, and optical fiber front end 7 connects incident light source, and optical fiber rear end 8 connects optical fibre interrogation instrument; Optical fiber front end 7, these two ends, optical fiber rear end 5 of measuring optical fiber grating 6 are fixed on spring leaf 3.
The present invention also puts forward a kind of novel three road optics pulse test systems, and this system comprises for the fiber grating pulse test head part of the area on the wrist over the radial artery where the pulse is felt for diagnosis position measurement, for the fiber grating pulse test head part of closed position measurement and the fiber grating pulse test head part for position measurement in chi; This three part is arranged in the space of gripper shoe 11 and base 2 formation; Described fiber grating pulse test head, comprise the chip architecture of the spring that measuring optical fiber grating 6, spring leaf 3 and support bar 4 are formed, the power effect of the pulse wave vertical direction vibrations that spring leaf 3 is subject to is undertaken spacing by support bar 4, spring leaf 3 drives the measuring optical fiber grating 6 be fixed on spring leaf 1 to be stretched in the horizontal direction, produces axial deformation; The echo centre wavelength produced in the measuring optical fiber grating 6 of deformation can produce skew; Measuring optical fiber grating 6 is fixed on protective cradle 1, and optical fiber front end 7 connects incident light source, and optical fiber rear end 8 connects optical fibre interrogation instrument; Optical fiber front end 7, these two ends, optical fiber rear end 5 of measuring optical fiber grating 6 are fixed on spring leaf 3.
The present invention has reintroduced a kind of novel three road optics pulse test methods, the method comprises the following steps: utilize chip architecture of the spring to set up linear relationship by between the centre wavelength of fiber grating echo and pulse wave, by using the reflection wavelength of measuring optical fiber grating 6 as measuring object;
The power that beat pulse produces, by after chip architecture of the spring, causes measuring optical fiber grating 6 to produce deformation; The deformation of measuring optical fiber grating 6 causes the centre wavelength of its reflected light signal to offset; The reflected light of measuring optical fiber grating 6 incides Wavelength demodulation part through bonder, obtains the numerical value of echo centre wavelength through Digital Signal Processing; The numerical value of echo centre wavelength embodies the change of human pulse ripple; This signal is amplified, filtering, the process such as separation, obtain the oscillogram of pulse wave.
Compared with prior art, the present invention adopts optical means to extract the pulse signal at cun, guan and chi, three places at the wrist where the pulse is usually taken three place simultaneously, and measuring device has the advantages such as structure is simple, certainty of measurement is high, good stability; Further, be a kind of inherent defect of existing for electric measurement method and the measuring method with higher reliability, accuracy that proposes.
Accompanying drawing explanation
Fig. 1 is the structural representation of single fiber grating pulse test head;
Reference numeral is: 1, protective cradle; 2, base; 3, spring leaf; 4, support bar; 5, with reference to grating; 6, measuring optical fiber grating; 7, optical fiber front end; 8, optical fiber rear end; 9, division board; 10, pressure control device;
Fig. 2 is the complete structure schematic diagram of novel three road optics pulse test systems of the present invention;
Reference numeral is: 11, gripper shoe; 12, the area on the wrist over the radial artery where the pulse is felt for diagnosis fiber grating pulse test head part; 13, fiber grating pulse test head part is shut; 14, fiber grating pulse test head part in chi.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, if these embodiments exist exemplary content, should not be construed to limitation of the present invention.
The present invention proposes a kind of fiber-optic grating sensor that utilizes and carry out the method for Measurement accuracy to pulse signal, is that one is optically to the intelligentized detection means of Traditional Chinese Medicine pulse-taking.
Fiber grating is the diffraction grating that a section is inscribed in a fiber, fiber core refractive index is axial cyclic change.Fiber grating has the advantages such as the little quality of volume is light, capacity of resisting disturbance strong, it is multiplexing to be convenient to, high sensitivity.The present invention adopts fiber grating as pulse signal measuring transducer part, and the reflection wavelength of fiber grating, as measuring object, utilizes the change of the indirect display pulse ripple of the change of echo wavelength.The center reflection wavelength of fiber grating is proportional with the effective refractive index of screen periods and grating region respectively, and the effective refractive index of screen periods and grating region all changes by the modulation of temperature and deformation, the reflection wavelength of fiber grating is thus caused to produce mobile.So, in the present invention, need control temperature to realize grating not by temperature interference.In the present invention, by arranging reference optical fiber, the wavelength realizing the generation eliminating external temperature moves.
The present invention adopts fiber grating as pulse signal measuring transducer part, chip architecture of the spring is utilized to set up linear relationship by between echo centre wavelength and pulse wave, by using the reflection wavelength of fiber grating as measuring object, thus realize measurement to pulse wave.As shown in Figure 1, chip architecture of the spring is made up of measuring optical fiber grating 6, spring leaf 3 and support bar 4.Support bar 4, through the aperture at spring leaf 3 two ends, is fixed on protective cradle 1 and division board 9.When spring leaf 3 is subject to the effect of the power of pulse wave vertical direction vibrations, spring leaf 3 is subject to the restriction of support bar 4, the drive measuring optical fiber grating 6 be fixed on spring leaf 1 is stretched in the horizontal direction, namely produce axial deformation, the echo centre wavelength created in the measuring optical fiber grating 6 of deformation can produce skew.Area and the pressure of this side-play amount and spring leaf 3 are directly proportional, and are inverse ratio with the tension force of spring leaf 3.Because the area of spring leaf 3 and tension force are fixed values, and the pressure that spring leaf 3 receives caused by the vibrations of human pulse.So, the change embodying human pulse of the center wavelength variation of echo in optical fiber.In this chip architecture of the spring, spring leaf 3 and contact skin, relative to the way of contact of contact type, the contact area of chip architecture of the spring is large, easily finds arteries and veins position, is convenient to measure.
Measuring optical fiber grating 6 is fixed on protective cradle 1, and optical fiber front end 7 connects incident light source, and optical fiber rear end 8 connects optical fibre interrogation instrument.Measuring optical fiber grating 6 two ends are fixed on spring leaf 3.Support bar 4, through the aperture at spring leaf two ends, is fixed on protective cradle 1 and division board 9.
Two ends with reference to grating 5 are separately fixed on protective cradle 1 and division board 9, and can not produce deformation, its echo centre wavelength only can change along with variations in temperature, in order to eliminate the impact of temperature parameters on measuring optical fiber optical grating reflection wave spectrum.Pressure control device 10 is a pair fixture on support bar 4, by changing this position to fixture, can change the stressing conditions of spring leaf, thus realizes indirectly to the effect of measuring position force, better to simulate the process of TCM pulse diagnosis.
As shown in Figure 2, pulses measure structure of the present invention is divided into three parts, namely the area on the wrist over the radial artery where the pulse is felt for diagnosis, shut with in chi, respectively cun, guan and chi, three places at the wrist where the pulse is usually taken three positions of corresponding human body wrist.This measuring head replaces the forefinger of staff, middle finger and the third finger respectively by three structures, measures pulse wave.
Detailed description of the invention citing is described below:
During measurement, first by staff right forearm as under firm banking, then pulse sensing testing head is placed in staff wrist, three measuring heads is placed in radial artery place respectively, after device is stable, from grating fibers output reflection ripple.
The present invention is based on the structure of spring leaf, support bar and fiber grating composition, the power of the pulse be subject to by spring leaf vibrations changes axial deformation on grating into.When spring leaf is subject to the effect of the power of pulse wave vertical tremor, spring leaf is subject to the restriction of support bar, is stretched in the horizontal direction by the drive fiber grating be fixed on spring leaf, namely produces axial deformation, cause transmitted wave centre wavelength in optical fiber to offset.
Packaged test optical fiber head is placed in human body right arm wrist, arteries and veins position, spring leaf adjacent wrist place.The power that beat pulse produces, by after above-mentioned structure, causes fiber grating to produce deformation.The deformation of fiber grating causes the centre wavelength of its reflected light signal to offset.The reflected light of fiber grating incides Wavelength demodulation part through bonder, obtains the numerical value of echo centre wavelength through Digital Signal Processing.The numerical value of echo centre wavelength embodies the change of human pulse ripple.This signal is amplified, filtering, the process such as separation, the oscillogram of pulse wave can be obtained.Have devised the sensor column of 1 × 3 in the present invention, by sensor column, cun,guan,chi three place arteries and veins position pulse signal is measured simultaneously.
In the process measured, by regulating the position of pressure control device, respectively to the area on the wrist over the radial artery where the pulse is felt for diagnosis, to shut and in chi, three positions apply different power, simulate pulse wave spectrum process.
Optical fiber in the present invention adopts single-mode fiber, and before optical fiber, termination centre wavelength is the wideband light source of 1550nm.Terminate to after optical fiber on (FBG) demodulator and demodulation is carried out to the centre wavelength of echo.Amplified by the signal be transferred to solution, filtering, the process such as separation, the oscillogram of pulse wave can be obtained.
The present invention is when measuring, and by wrist arteries and veins position place as under spring leaf, spring leaf can not only improve the comfort level of measurement, and due to the field of load of spring leaf wide, to acupuncture point accurately aim at less demanding, convenient operation.
The present invention adopts fiber grating as pulse signal measuring transducer part, chip architecture of the spring is utilized to set up linear relationship by between echo centre wavelength and pulse wave, by using the reflection wavelength of fiber grating as measuring object, thus realize measurement to pulse wave.The center reflection wavelength of fiber grating is subject to the impact of temperature and deformation Two Variables, so in the present invention, is provided with reference optical fiber, realizes the compensation to temperature.
Although invention has been described for composition graphs above; but the present invention is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; when not departing from present inventive concept, can also make a lot of distortion, these all belong within protection of the present invention.

Claims (6)

1. a fiber grating pulse test head, it is characterized in that, comprise the chip architecture of the spring that measuring optical fiber grating (6), spring leaf (3) and support bar (4) are formed, support bar (4), through the aperture at spring leaf (3) two ends, is fixed on protective cradle (1) and division board (9); The power effect of the pulse wave vertical direction vibrations that spring leaf (3) is subject to is undertaken spacing by support bar (4), spring leaf (3) drives the measuring optical fiber grating (6) be fixed on spring leaf (1) to be stretched in the horizontal direction, produces axial deformation; The echo centre wavelength produced in the measuring optical fiber grating (6) of deformation can produce skew; Measuring optical fiber grating (6) is fixed on protective cradle (1), and optical fiber front end (7) connect incident light source, and optical fiber rear end (8) connect optical fibre interrogation instrument; Optical fiber front end (7), optical fiber rear end (8) these two ends of measuring optical fiber grating (6) are fixed on spring leaf (3).
2. fiber grating pulse test head as claimed in claim 1, it is characterized in that, this structure also comprises with reference to grating (5), and the described two ends with reference to grating (5) are separately fixed on protective cradle (1) and division board (9), do not produce deformation; Pressure control device (10) is for being arranged on a pair fixture on support bar (4).
3. novel three road optics pulse test systems, it is characterized in that, this system comprises for the fiber grating pulse test head part of the area on the wrist over the radial artery where the pulse is felt for diagnosis position measurement, for the fiber grating pulse test head part of closed position measurement and the fiber grating pulse test head part for position measurement in chi; This three part is arranged in the space that gripper shoe (11) and base (2) form; Described fiber grating pulse test head, comprise the chip architecture of the spring that measuring optical fiber grating (6), spring leaf (3) and support bar (4) are formed, support bar (4), through the aperture at spring leaf (3) two ends, is fixed on protective cradle (1) and division board (9); The power effect of the pulse wave vertical direction vibrations that spring leaf (3) is subject to is undertaken spacing by support bar (4), spring leaf (3) drives the measuring optical fiber grating (6) be fixed on spring leaf (1) to be stretched in the horizontal direction, produces axial deformation; The echo centre wavelength produced in the measuring optical fiber grating (6) of deformation can produce skew; Measuring optical fiber grating (6) is fixed on protective cradle (1), and optical fiber front end (7) connect incident light source, and optical fiber rear end (8) connect optical fibre interrogation instrument; Optical fiber front end (7), optical fiber rear end (8) these two ends of measuring optical fiber grating (6) are fixed on spring leaf (3).
4. novel three road optics pulse test systems as claimed in claim 3, it is characterized in that, this system also comprises with reference to grating (5), the described two ends with reference to grating (5) are separately fixed on protective cradle (1) and division board (9), do not produce deformation; Pressure control device (10) is for being arranged on a pair fixture on support bar (4).
5. novel three road optics pulse test methods, it is characterized in that, the method comprises the following steps:
Utilize chip architecture of the spring to set up linear relationship by between the centre wavelength of fiber grating echo and pulse wave, by using the reflection wavelength of measuring optical fiber grating (6) as measuring object;
The power that beat pulse produces, by after chip architecture of the spring, causes measuring optical fiber grating (6) to produce deformation; The deformation of measuring optical fiber grating (6) causes the centre wavelength of its reflected light signal to offset; The reflected light of measuring optical fiber grating (6) incides Wavelength demodulation part through bonder, obtains the numerical value of echo centre wavelength through Digital Signal Processing; The numerical value of echo centre wavelength embodies the change of human pulse ripple; This signal is amplified, filtering, the process such as separation, obtain the oscillogram of pulse wave.
6. novel three road optics pulse test methods as claimed in claim 5, is characterized in that, the method also comprises the step arranging reference optical fiber (5) and realize the compensation of temperature.
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CN101773382A (en) * 2009-01-14 2010-07-14 管斌 Chinese medicine pulse condition mechanical digital acquisition and digital mechanical restore instrument
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CN106955090A (en) * 2017-05-09 2017-07-18 陈志霖 Pulse diagnosing device, gas-detecting device, simulation pulse device and traditional Chinese medical science diagnosis and therapy system
CN106955090B (en) * 2017-05-09 2023-09-15 陈志霖 Pulse feeling device, gas detection device, pulse simulating device and traditional Chinese medicine diagnosis and treatment system

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