CN205514554U - Three -dimensional adjustable traditional chinese medical science pulse manifestation collection system - Google Patents

Abstract

The utility model discloses a three -dimensional adjustable traditional chinese medical science pulse manifestation collection system, including frame, base, get and press probe, X to mobile module and Y to mobile module, the base goes up and down adjustablely in vertical orientation, and X sets up on the frame top inboardly to mobile module to mobile module and Y, get press probe connection X to mobile module and Y to mobile module, X to with Y to the position level adjustable. The utility model provides a getting and pressing the probe, the simple structure of elastic element system, easy to carry out obtain through the analysis method, through the excitation of temperature and pressure differential, isolate the response result of temperature and pressure.

Description

A kind of three-dimensional adjustable traditional Chinese medical pulse manifestation collecting device

Technical field

This utility model belongs to technical field of medical equipment, relates to a kind of traditional Chinese medical science pulse detecting device, and being specifically related to a kind of three-dimensional can The traditional Chinese medical pulse manifestation collecting device adjusted.

Background technology

Pulse-taking is that doctor utilizes sensory organ to obtain the important means of key diagnostic information, the diagnosis and treatment experience of the traditional Chinese medical science and diagnosis theory master Set up on the basis of the observation and analysis, conclusion of doctor's individuality.The difference of sensory organ sensitivity and the difference of subjective factors, Have a strong impact on the objectivity of diagnostic message.Researcher of feeling the pulse modern age utilizes modern electronic technology, sensor technology and computer skill Art has carried out the work of various pulse diagnosis study, depicts pulse wave, analyzes the basic feature of common Chinese medicine pulse, achieves certain Progress so that the acquisition mode of data is more objective, but there is also certain problem.

Pulse wave spectrum device sensor mostly is rigid probe, and when pulse is pressed by rigid probe, probe itself can be to skin subcutaneous tissue Blood vessel causes a kind of pessimal stimulation, causes vascular degeneration etc., can not reflect the real conditions of vessel movement completely, and the firmest Sense of touch cause the bad experience of patient, the too small skin of can not fitting completely again of pressure；By using in some patents or paper Flexible material or realize pulse pressure by the way of liquid conductive and measure, flexible material by gravity factor own, impact The accuracy measured, the inertia of fluent material also can affect certainty of measurement and it is necessary to ensures when liquid container does not the most tilt The impact of gravity when could eliminate lateral pressure, but, due to the movement of probe, inertia needs one to the impact of pressure transducer Just can weaken after the section time, there is certain time stickiness, affect the work efficiency of certainty of measurement and the person of feeling the pulse.

Summary of the invention

According to above the deficiencies in the prior art, technical problem to be solved in the utility model is to propose a kind of three-dimensional adjustable traditional Chinese medical science Pulse condition collecting device, by using by the way of aerial conduction, solves flexible material and the bigger problem of liquid conductive power error, There is the advantage that sampling precision is high.

In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is: a kind of three-dimensional adjustable Chinese medicine pulse collection Device, including frame, base, pressure probe, X to mobile module and Y-direction mobile module, described base in the vertical direction Lifting adjustable, X is arranged on frame top inner side to mobile module and Y-direction mobile module, and pressure probe connects X to mobile module With Y-direction mobile module, at X to adjustable with Y-direction position level.Described X to mobile module include X to mobile slide block, X to Motion driving link, X are to motion guide support member, and Y-direction mobile module includes that Y-direction moves slide block, Y-direction motion driving link and Y-direction Motion guide support member, X is to moving slide block at X under the driving of motion driving link, along X to motion guide support member in X side To movement；Y-direction motion guide support member end is arranged on X on mobile slide block, and X drives X to mobile slide block to motion driving link Time, it is arranged on X Y-direction motion guide support member on mobile slide block together along X to moving horizontally；Base bottom surface connects There are liter valency support and a hydraulic means.Described pressure probe includes quasiconductor detector unit, two times transfer unit and signal processing unit, Quasiconductor detector unit includes two semiconductor gauge R_ε1And R_ε2, semiconductor gauge R_ε1And R_ε2Being located at radius is r₀Circle On diaphragm, circular film is located at the inside of pressure probe, and pressure probe is divided into two cavitys closed, and is be dried in cavity Gas, two semiconductor gauges are by the pressure differential inside and outside diaphragm, output resistance under pressure differential and Temperature Excitation effect Response, electrical response signal is converted to pulse width signal by two times transfer unit, and signal processing unit isolates temperature by data decoupler Degree and external and internal pressure difference and relative humidity.Described semiconductor gauge R_ε1It is arranged on home position, R_ε2It is arranged on diaphragm 0.89r₀ Circle on, the variable quantity of two resistance strain gages is identical, positive and negative on the contrary.Described two times transfer unit includes two identical pulses Signaling conversion circuit, a semiconductor gauge correspondence connects a pulse signal change-over circuit, and pulse signal change-over circuit includes 555 intervalometers, resistance R and electric capacity C, resistance R is connected between No. 2 pins of 555 intervalometers and No. 3 pins, electric capacity C It is connected on No. 2 pins of 555 intervalometers, No. 2 pins and No. 6 pin short circuits, No. 3 pins and No. 7 pin short circuits, 555 No. 7 pin output pulse width signals of intervalometer are to signal processing unit.The pulse width conversion formula of described pulse signal change-over circuit is τ=ln2 C R, in formula, τ is output pulse width, and R is the electrical response value of the semiconductor gauge that circuit receives, and C is Muscovitum mark Pseudo-capacitance, pulsewidth output τ is directly proportional to respective institute connecting resistance R.Described circular film is according to two and half in quasiconductor detector unit The strain variation of conductor foil gauge is divided into normal strain section and negative strain section, with radius 0.63r₀Concentric circular be boundary.

This utility model provides the benefit that: 1. the pressure probe that this utility model provides, and flexible member system structure is simple, be prone to Implement.

2. obtain through analytic method: by temperature and the excitation of pressure reduction, isolate the response results of temperature and pressure.

Accompanying drawing explanation

Below the content expressed by this specification accompanying drawing and the labelling in figure are briefly described:

Fig. 1 be detailed description of the invention of the present utility model sensor in the scheme of installation of foil gauge.

Fig. 2 is the structural representation of the sensor of detailed description of the invention of the present utility model.

Fig. 3 is the diagram of strains of the foil gauge of detailed description of the invention of the present utility model.

Fig. 4 is the sensor operating principles structured flowchart of detailed description of the invention of the present utility model.

Fig. 5 is the signal flow block diagram of the sensor of detailed description of the invention of the present utility model.

Fig. 6 is the pulse width signal change-over circuit figure of detailed description of the invention of the present utility model.

Fig. 7 is the pulse condition collecting device structure chart of detailed description of the invention of the present utility model.

Fig. 8 is the understructure figure of detailed description of the invention of the present utility model.

Fig. 9 is the pressure probe guide rail figure of detailed description of the invention of the present utility model.

Figure 10 is the pressure sonde configuration figure of detailed description of the invention of the present utility model.

Wherein, 1, U-shaped bearing, 2, cavity, 3, diaphragm, 4, semiconductor gauge R_ε1, 5, semiconductor gauge R_ε2, 6, Frame, 7, pressure probe, 8, hydraulic means, 9, X to motion guide support member, 10, Y-direction motion guide support member.

Detailed description of the invention

Below against accompanying drawing, by the description to embodiment, each component that detailed description of the invention of the present utility model is the most involved Mutual alignment between shape, structure, each several part and annexation, the effect of each several part and operation principle, manufacturing process and behaviour Make using method etc., be described in further detail, to help those skilled in the art to inventive concept of the present utility model, skill Art scheme has more complete, accurate and deep understanding.

Main thought of the present utility model is: by the frame 6 regulation force size of three-dimensional adjustable pressure probe 7, simulation passes The touching, pressing and searching with fingers for pulse feeling maneuver of system pulse-taking, adjusts and takes arteries and veins position, can obtain the pulsation information of cun,guan,chi respectively, of the present utility model Pulse condition collecting device includes that base, frame 6, X, can be three to mobile module, Y-direction mobile module and pressure probe 7 composition On individual direction, (radial artery longitudinally, laterally with in vertical direction) carries out coarse adjustment, fine tuning location flexibly and easily.Owing to human body is " very little Mouthful " position of radial artery exists individual variation, and the same individual position of radial artery, pulsating force scope also can be because of function of human body states Change and change, thus the repeatability causing sphygmogram to be traced is the highest.Normalization sensor positioner three-dimensional is adjustable, and operation Convenient, flexibly, can fully adapt to the difference of individuality, meet and be accurately positioned at take needs and the pulse wave spectrum of arteries and veins position by adopting arteries and veins probe Fingering requirement.

As it is shown in fig. 7, be the structure chart of pulse condition collecting device of the present utility model, frame 6 is edge-on U-shape structure, frame 6 bottoms arrange base moving up and down, and the top inner side of frame 6 is provided with X to mobile module and Y-direction mobile module, takes Pressure probe 7 connects to mobile module and Y-direction mobile module respectively at X, and upper and lower adjustable base, X move to mobile module, Y-direction Dynamic model block achieve radial artery longitudinally, laterally with the three-dimensional regulation in vertical direction.

X to mobile module include X to mobile slide block, X to motion driving link, X to motion guide support member 9, Y-direction moves mould The Y-direction that includes block moves slide block, Y-direction motion driving link and Y-direction motion guide support member 10, and X is to moving slide block at X to motion Under the driving of driving link, move in X-direction along X to motion guide support member 9.Y-direction motion guide support member 10 end is installed At X on mobile slide block, X, when motion driving link drives X to mobile slide block, is arranged on X Y-direction fortune on mobile slide block Action-oriented support member 10 together along X to moving horizontally.

X to mobile module include X to mobile slide block, X to motion driving link, X to motion guide support member 9, drive link, lead Wheel, feed screw nut, when power is driven to X to motion driving link leading screw by drive link, feed screw nut at X to motion driving link silk Being X on thick stick to translation, due to action of gravity, the X being pressed on feed screw nut is to mobile slide block upper and lower translation therewith, and X is to movement Slide block both sides are provided with can be at the X guide wheel that move in edge in motion guide support member 9, and X is grooved liter to motion guide support member 9 Fall guide support.

The Y-direction that includes Y-direction mobile module moves slide block, Y-direction motion guide support member 10, Y-direction leading screw, drive bevel gear, actively Bevel gear axle head, notch cover plate.When power is transferred to drive bevel gear axle head by drive link, drive bevel gear drives from mantle tooth Wheel rotates, and driven wheel of differential couples with horizontal lead screw unthreaded portion spline, and horizontal lead screw rotates so that Y-direction moves slide block Y To moving horizontally.

As shown in Figure 8, for pulse condition collecting device understructure schematic diagram of the present utility model, base uses hydraulic means 8 to carry out Altitude mixture control, as it is shown in figure 9, for the guide rail figure of pressure probe 7, pressure probe 7 can move in X-direction and Y-direction. Concrete, use nine tunnel pressure probes 7 to measure the information of beating of cun,guan,chi three position blood vessel, each pressure probe 7 is just Being a pressure transducer, every one position of three sensor measurements, three sensors are along blood vessel arranged radially, central sensor Record the power of simple vertical direction, and two side sensers record the resultant force of pulse pulsating force, skin tangential tension etc..Two-way is believed Number carry out computing, the blood vessel radially mechanical index such as pulsating force, axial tensile force blood vessel equivalent hardness can be distinguished.In three pressure transducers, The pressure of central sensor is maximum, therefore, it can the numerical response by three sensors, realizes pulse precise positioning.? During actual use, first substantially positioned the position of pulse by medical personnel, the pulse location of patient is substantially placed on pressure The underface of probe 7, then controls pressure probe 7 and moves downwardly to the position of skin surface 0.5-1.5cm, and medical personnel are again Being finely adjusted the position of probe, due to the difference of age, sex and individuality, the pressure sensor location at cun,guan,chi three position has Little difference, realizes coarse adjustment by medical personnel to the judgement of pulse location.Pressure probe 7 adds when being pressed on skin, by passing The value of feedback of sensor, in three sensors, the force value of central sensor should be maximum, then realizes the fine tuning of pressure probe 7.

The pressure probe 7 use analytic method that this utility model provides isolates corresponding transition response from multiple motivator, as Shown in Figure 10, pressure probe 7 is cylindrical-shaped structure, and the inside of pressure probe 7 is provided with a piece of flexible sheet 3, flexible sheet 3 Pressure probe 7 being divided into two parts, forms two cavitys 2 sealed, for the air being dried in cavity 2, there is pressure in both sides Difference.The side of pressure probe 7 is similar U-shaped bearing 1 structure, forms one and be dried between flexible sheet 3 and U-shaped bearing 1 Aeroseal chamber.The cylinder enclosed construction that one end is an end band semiglobe that pressure probe 7 contacts with pulse, with For the aeroseal chamber being dried between diaphragm 3.The center of circle of diaphragm 3 outer surface and the appropriate location by periphery configure two and half lead Body strain sheet, receives the multiple excitation information from wrist with this device, then after quadratic transformation and signal processing, isolates , there is draught head Δ P in the pressure information of beat pulse, above-mentioned circular film 3 selects pyrite diaphragm 3 between two annular seal spaces.

Pressure transducer also includes quasiconductor detector unit, two times transfer unit and signal processing unit, in quasiconductor detector unit It is provided with two semiconductor gauge R_ε1And R_ε2Being arranged on radius is r₀Circular film 3 on, semiconductor gauge is sent out by piezoresistance Changing output resistance responds, and electrical response signal is converted to pulse width signal, signal processing unit decoupling point by two times transfer unit Separate out the pressure information of two times transfer unit output.

In quasiconductor detector unit, the resistance delta that two semiconductor gauges are produced by air pressure excitation is equal, positive and negative on the contrary, its In a semiconductor gauge be arranged on home position, another semiconductor gauge is arranged on radius 0.89r₀Concentrically ringed position Put.Two times transfer unit includes that two identical pulse signal change-over circuits, a semiconductor gauge correspondence connect an arteries and veins Rushing signaling conversion circuit, pulse signal change-over circuit includes 555 intervalometers, resistance R and electric capacity C, and resistance R is connected to 555 Between No. 2 pins and No. 3 pins of intervalometer, electric capacity C is connected on No. 2 pins of 555 intervalometers, No. 2 pins and 6 Number pin short circuit, No. 3 pins and No. 7 pin short circuits, No. 7 pin output pulse widths of 555 intervalometers are signally attached to signal processing Unit.The pulse width conversion formula of pulse signal change-over circuit is τ=ln2 C R, and in formula, τ is output pulse width, and R is in circuit Resistance, C is mica standard electric capacity, and pulsewidth output τ is directly proportional to respective institute connecting resistance R.Circular film 3 detects according to quasiconductor The strain variation of two semiconductor gauges in unit is divided into normal strain section and negative strain section, with radius 0.63r₀Concentric Circle is boundary.

Signal processing unit, by the pressure differential of diaphragm 3 both sides, is converted into the output resistance response of semiconductor gauge, becomes through secondary Pulsewidth after changing and be directly proportional the difference of the counting of frequency all the time, calculates differential pressure value suffered by foil gauge.Then according to differential pressure value Calculate the pressure between pressure probe 7 and skin.In the case of between holding skin and pressure probe 7, pressure is constant, arteries and veins Fight and often beat once, all the air pressure in pressure probe 7 can be applied certain pressure, by pressure skin is visited with pressure Pressure between 7 carries out sustainable analysis, it is possible to the data message such as related pressure isolating beat pulse.

The concrete detection method of pressure of the present utility model probe 7 measurement pressure is as follows: step one, connection install pressure probe 7 Circuit；Step 2, the installation site of two semiconductor gauges of adjustment, make two semiconductor gauges be produced by air pressure excitation Resistance delta is equal, positive and negative on the contrary；Step 3, the resistance change of semiconductor gauge are input to two times transfer unit and carry out arteries and veins Wide conversion, output pulse width signal；Step 4, signal processing unit receive the pulse width signal of two times transfer unit output, utilize That law, foil gauge principle and analytic method analyze the variable quantity of semiconductor gauge, the pressure differential of diaphragm 3 both sides.

Described signal processing unit utilizes the pressure differential between pressure probe 7 and U-shaped bearing 1, pulsewidth after quadratic transformation and The difference of the counting of frequency all the time is directly proportional by it, and the logarithm of the counting sum of ambient temperature and sensitive resistance inversely, calculates Go out differential pressure value Δ P suffered by foil gauge, 7 pressure P are popped one's head in pressure_MWith temperature value t.Hereafter by the derivation of equation in detail this utility model is described in detail Pressure probe 7 measurement pressure P_MDetailed process.

One, foil gauge and transfer characteristic thereof

Pressure probe 7 in foil gauge scheme of installation as it is shown in figure 1, pressure probe 7 structural representation as in figure 2 it is shown, The transfer characteristic of foil gauge and stress distribution are as shown in Figure 3.Pressure probe 6 is cylindrical-shaped structure, and the inside of pressure probe 6 sets Having a piece of flexible sheet, pressure probe 6 is divided into two parts by flexible sheet, forms two cavitys sealed, is dry in cavity Air, there is pressure differential in both sides, calculates the pressure differential of diaphragm 3 both sides by the resistance variations measuring semiconductor gauge.

The pressure P of pressure probe 7_MStepless action is in the outer surface of flexible sheet 3, and then the differential pressure of diaphragm 3 both sides is:

Δ P=P_M–P_re(Pa) (1)

P in formula_re=4 10⁴(Pa) it is the reference pressure set in annular seal space, under differential pressure Δ P effect, diaphragm 3 surface upper stress Distribution with strain is shown below:

Radial stress:

Radial strain:

In formula (2) and (3), this utility model selects elastic preferably pyrite diaphragm 3, and E (Pa) is diaphragm 3 elastic modelling quantity, It is about 7*10¹⁰Pa, μ are Poisson's ratio, about 0.33, r₀For the outer radius 40 (mm) of circular film 3, h is circular film 3 Diaphragm 3 thickness 0.1 (mm), b is the thickness 5 (mm) of U-shaped bearing 1, and the height of U-shaped bearing 1 is 10 (mm), Δ P is the differential pressure (Pa) acting on diaphragm 3 both sides, and r (mm) is the radius of foil gauge position.

If known constant is substituted into (2) formula, circumferential stress σ can be obtained_R=0=8*10⁴*ΔP(Pa) (4)。

The sensitivity coefficient K of foil gauge_εWith transfer characteristic such as formula (5) Suo Shi:

$\frac{{\mathrm{\ΔR}}_{\mathrm{\ϵ}}}{R_0}=K_{\mathrm{\ϵ}}*\mathrm{\ϵ}---\left(5\right)$

R in formula₀For t=0 DEG C and ε_rFoil gauge resistance (Ω), K when=0_εIt is about 125, Δ R_εIt is then that foil gauge is at ε_rThe lower electricity of excitation The variable quantity (Ω) of resistance, can obtain (4) formula substitution (5):

$\frac{{\mathrm{\ΔR}}_{\mathrm{\ϵ}}}{R_0}={10}^7*\frac{\mathrm{\Δ}P}{E}---\left(6\right)$

If by E=7*10¹⁰Pa substitutes into formula (6) and understands, and the relative resistance change that foil gauge can be output by, under maximum range Also only have 10^-2Magnitude, therefore quadratic transformation and signal processing circuit need to be added in a device, the sensitivity needed for obtaining and resolution Power.

Two, quadratic transformation and signal transmit flow process

As shown in Figure 4, pressure probe includes at quasiconductor detector unit, two times transfer unit, signal operation principle structured flowchart Reason unit, is provided with two semiconductor gauges in quasiconductor detector unit, semiconductor gauge is changed by piezoresistance and exports electricity Resistance response, the outfan connecting secondary converting unit of quasiconductor detector unit, two times transfer unit receives quasiconductor detector unit Output signal, electrical response signal is converted to pulse width signal by two times transfer unit, and the outfan of two times transfer unit connects signal Processing unit, the output signal of signal processing unit Decoupling Analysis two times transfer unit, isolate pressure information.

Signal flow block diagram is as it is shown in figure 5, two times transfer unit includes two identical pulse signal change-over circuits, pulse signal Change-over circuit is made up of 555 intervalometer C1 and C2, and two times transfer unit and signal processing unit are additionally provided with gating switch, selects C3 switchs, and signal processing unit mainly comprises as C4 single-chip microcomputer.R in Fig. 5_ε1And R_ε2At P_WUnder encouraging with t, each produce Different R₁And R₂Response, they are after C1, C2 chip 555 of two identical pulse signal change-over circuits converts, respectively From producing τ₁And τ₂(S) pulsewidth output, this pulse width signal is delivered to C4 single-chip microcomputer after C3 switching gate again and is carried out signal processing. As shown in Figure 6, resistance R is connected between No. 2 pins of C intervalometer 555 and No. 3 pins pulse signal change-over circuit, electricity Hold C to be connected on No. 2 pins of 555 intervalometers, No. 2 pins and No. 6 pin short circuits, No. 3 pins and No. 7 pin short circuits, No. 7 pin output pulse widths of 555 intervalometers are signally attached to signal processing unit.Due to the difference of foil gauge, two pulse electricity Resistance and output pulse width in road can use R₁And R₂、τ₁And τ₂Represent.

Pulse width conversion formula: τ=ln2 C R (S) corresponds to two pulse signal change-over circuits and is:

τ₁=ln2 C₀·R₁(S) (7)

τ₂=ln2 C₀·R₂(S) (8)

τ in formula₁And τ₂It is the two-way pulsewidth output signal that two semiconductor gauges are corresponding, R₁And R₂Electricity for semiconductor gauge Resistance changing value measurement unit is Ω, C₀(F) it is mica standard electric capacity, about 0.72 × 10^-6F, above formula show pulsewidth output with Each institute connecting resistance R₁And R₂It is directly proportional.

Three, when multifactor input, the decoupling of synthesis response processes

At τ₁And τ₂In be implied with pressure probe 7 and skin between two kinds of information of pressure and temperature t, how to allow it follow-up Data processing separates, and need to realize information by data decoupler technology and separates and restore.

R₁And R₂Resistance variations formula is:

$R_1=R_0\·EXP\[B(\frac{1}{T}-\frac{1}{T_0})\]+{\mathrm{\ΔR}}_{\mathrm{\ϵ}1}\left(\mathrm{\Ω}\right)---\left(9\right)$

$R_2=R_0\·EXP\[B(\frac{1}{T}-\frac{1}{T_0})\]+{\mathrm{\ΔR}}_{\mathrm{\ϵ}2}\left(\mathrm{\Ω}\right)---\left(10\right)$

R in formula₀Resistance on the basis of=1000 Ω；B=4850 (K) is the resistance temperature coefficient of semiconductor gauge；T₀=273 (K) For reference temperature(TR)；T (K) is input temp；ΔR_ε1With Δ R_ε2It is respectively R₁And R₂Pressure between skin and pressure probe 7 The lower resistance delta each produced of excitation.From above two formulas, if allowing Δ R_ε1With Δ R_ε2Numerical value is identical, but positive and negative on the contrary, I.e. (9) and (10) formula becomes:

$R_1=R_0\·EXP\[B(\frac{1}{T}-\frac{1}{T_0})\]+{\mathrm{\ΔR}}_{\mathrm{\ϵ}}\left(\mathrm{\Ω}\right)---\left(11\right)$

$R_2=R_0\·EXP\[B(\frac{1}{T}-\frac{1}{T_0})\]-{\mathrm{\ΔR}}_{\mathrm{\ϵ}}\left(\mathrm{\Ω}\right)---\left(12\right)$

Above two formulas are subtracted each other or are added, so that it may isolates P_MInformation, R1+R2=f when being i.e. added is inputted with t two kinds_t(T), and R1-R2=f when subtracting each other_ε(P_W), i.e. and with the result of difference only and single input information one_to_one corresponding, Δ R_ε1=-Δ R_ε2=Δ R_ε。

Seeing Fig. 2, whole diaphragm 3 outer surface is under differential pressure Δ P effect, with radius r=0.63r₀For boundary, divide into positive and negative two Strain regions.By part inner circle Wei Zheng ε district, the center of circle, by periphery excircle part then Wei Fu ε district, at the correct position in these two regions On, ε numerical value can be found equal but opposite polarity two points, one is at circle centre position, r₁=0, and another point is through (3) formula meter Calculate as r₂=0.89r₀Place.Two select at this and configure the semiconductor gauge that two piece performances are identical, Bing Rangqi center and diaphragm 3 are joined Overlap according to, be then achieved that formula (11) and the quantitative relationship of (11).

Formula (11) adds formula (12) obtain

Above formula eliminates ε information to (R₁+R₂) quantitative interference, but R₁And R₂It is respectively coupled to 555 chips In charge-discharge circuit, therefore cannot be by R₁And R₂Directly it is added, the most just need to process through data operation and realize.If allowing pulsewidth τ₁ And τ₂To clock frequency f in single-chip microcomputer₀Counting, then have count value N₁And N₂For:

N₁=τ₁·f₀ (14)

N₂=τ₂·f₀ (15)

τ₁+τ₂=(N₁+N₂)/f₀(S) (16)

Simultaneous above formula, and can obtain through arrangement:

$T=\frac{B}{ln\[\left(EXP\frac{B}{T_0}\right)*\left(\frac{N1+N2}{1000}\right)\]}=\frac{4850}{ln\[5.2*{10}^4*(N1+N2)\]}---\left(17\right)$

Celsius temperature: t=T-273 (DEG C) (18)

In formula, each constant coefficient is at R₀=1000 Ω, C₀=7.2*10^-6F and f₀Calculate under the conditions of=10MHZ.From R₁And R₂'s Two times transfer information is isolated strain and the pressure P of pressure probe 7_MEtc. information, (11) formula is deducted (12) formula, can obtain

R1-R2=2 Δ R_ε=2R₀K_ε·ε(Ω) (19)

Recycling τ₁-τ₂=(N₁-N₂)/f₀(3), (7), the simultaneous such as (8) formula, collated obtain,

Δ P=10 (N₁-N₂)(Pa) (20)

Formula (17) and (20) are two kinds of input-output characteristic equations of pressure probe 7, all have enough sensitivity and divide Distinguish power.The pressure between skin and pressure probe 7 can be asked for by formula (1), keep between pressure probe 7 and skin Contact dynamics is constant, and due to beating of interpulse interval, beat pulse makes the pressure increment excitation between skin and pressure probe 7 make Foil gauge on flexible sheet 3 produces corresponding response, and the pressure differential Δ P of flexible sheet 3 both sides increases, by popping one's head in pressure 7 pressure P_MPersistence observe, it is easy to draw pressure pop one's head in P_MIncrement information, the response of this namely beat pulse excitation Result.

Above in conjunction with accompanying drawing, this utility model is exemplarily described, it is clear that this utility model implements not by above-mentioned side The restriction of formula, as long as have employed the improvement of the various unsubstantialities that method of the present utility model design is carried out with technical scheme, or not Improved design of the present utility model and technical scheme are directly applied to other occasion, all at protection domain of the present utility model Within.Protection domain of the present utility model should be as the criterion with the protection domain that claims are limited.

Claims (8)

1. the adjustable traditional Chinese medical pulse manifestation collecting device of three-dimensional, it is characterized in that, including frame (6), base, pressure probe group, X to mobile module and Y-direction mobile module, the lifting of described base in the vertical direction is adjustable, X is arranged on frame (6) top inner side to mobile module and Y-direction mobile module, pressure probe group connection X is to mobile module and Y-direction mobile module, adjustable to the position level with Y-direction at X.

The adjustable traditional Chinese medical pulse manifestation collecting device of three-dimensional the most according to claim 1, it is characterized in that, to mobile module, described X includes that X is to moving slide block, X to motion driving link, X to motion guide support member (9), the Y-direction that includes Y-direction mobile module moves slide block, Y-direction motion driving link and Y-direction motion guide support member (10), X to mobile slide block at X under the driving of motion driving link, move in X-direction along X to motion guide support member (9)；Y-direction motion guide support member (10) end is arranged on X on mobile slide block, and X, when motion driving link drives X to mobile slide block, is arranged on X Y-direction motion guide support member (10) on mobile slide block together along X to moving horizontally；Base bottom surface connects lifting support and hydraulic means (8).

The adjustable traditional Chinese medical pulse manifestation collecting device of three-dimensional the most according to claim 2, it is characterized in that, described harvester is provided with three groups of pressures probe (7), correspondence gathers radial artery cun respectively, close, the pulse information at three positions of chi, described three groups of pressures probe (7) are separately positioned on the Y-direction mobile module of correspondence, the two ends of Y-direction mobile module are arranged on X on mobile slide block, described often group pressure probe (7) includes three pressures probe (7) respectively, three pressures probe (7) are along Y-direction motion guide support member (10) direction arranged in parallel.

The adjustable traditional Chinese medical pulse manifestation collecting device of three-dimensional the most according to claim 3, it is characterized in that, described pressure probe (7) includes quasiconductor detector unit, two times transfer unit and signal processing unit, and quasiconductor detector unit includes two semiconductor gauge R_{ε 1}And R (4)_{ε 2}(5), semiconductor gauge R_{ε 1}And R (4)_{ε 2}(5) being located at radius is r₀Circular film (3) on, circular film (3) is located at the inside of pressure probe (7), pressure probe (7) is divided into two cavitys closed, for the gas being dried in cavity, two semiconductor gauges are by the pressure differential inside and outside diaphragm (3), output resistance response under pressure differential and Temperature Excitation, electrical response signal is converted to pulse width signal by two times transfer unit, and signal processing unit isolates temperature by data decoupler and external and internal pressure is poor.

The adjustable traditional Chinese medical pulse manifestation collecting device of three-dimensional the most according to claim 4, it is characterised in that described semiconductor gauge R_{ε 1}(4) it is arranged on home position, R_{ε 2}(5) diaphragm (3) 0.89r it is arranged on₀Circle on, semiconductor gauge R_{ε 1}And R (4)_{ε 2}(5) the resistance delta numerical value each produced under air pressure encourages is equal, positive and negative on the contrary, r₀Radius for circular film (3).

The adjustable traditional Chinese medical pulse manifestation collecting device of three-dimensional the most according to claim 4, it is characterized in that, described two times transfer unit includes two identical pulse signal change-over circuits, one semiconductor gauge correspondence connects a pulse signal change-over circuit, pulse signal change-over circuit includes 555 intervalometers, resistance R and electric capacity C, resistance R is connected between No. 2 pins of 555 intervalometers and No. 3 pins, electric capacity C is connected on No. 2 pins of 555 intervalometers, No. 2 pins and No. 6 pin short circuits, No. 3 pins and No. 7 pin short circuits, No. 7 pin output pulse width signals of 555 intervalometers are to signal processing unit.

The adjustable traditional Chinese medical pulse manifestation collecting device of three-dimensional the most according to claim 6, it is characterized in that, the pulse width conversion formula of described pulse signal change-over circuit is τ=ln2 C R, in formula, τ is output pulse width, R is the electrical response value of the semiconductor gauge that circuit receives, C is mica standard electric capacity, and pulsewidth output τ is directly proportional to respective institute connecting resistance R.

The adjustable traditional Chinese medical pulse manifestation collecting device of three-dimensional the most according to claim 4, it is characterized in that, described circular film (3) is divided into normal strain section and negative strain section according to the strain variation of two semiconductor gauges in quasiconductor detector unit, with radius as 0.63r₀Concentric circular be boundary.