CN1120925A - Composite acupoint-parameter sensor - Google Patents

Abstract

The said sensor has detecting head, temp. sensor, spring and support, and the detecting head has front film sheath and back light-chopping board and optoelectrical detection pair. The support pushed by outer force compresses the spring so that the displaced light-chopping board inserts into the optoelectrical detection pair and the instrument begins sampling, and this ensures the accuracy of all measured parameters. The present invention applies pulse voltage via film sheath on acupoint and obtains the dielectric constant. The present invention is used in the measurement of acupoint parameters of various organism.

Description

Composite acupoint-parameter sensor

The invention belongs to Chinese medicine indication body surface point, meridians carry out the medical science checkout gear that multiple physical parameter is sampled.

Along with development of modern science and technology, the motherland tradition traditional Chinese medical science aspects such as the research of the science of acupuncture and moxibustion and clinical dialectical Shi Zhi progressively move towardss to standardize, standardization.The physiological phenomenon related to theory of Chinese medical science, particularly through the cave, to realize scientific in the research of venation, objectify, must adopt advanced technological means in the organism body surface be studied the block that biological vital movement has Special Significance, point position and physics, some variations of chemistry, and detect for some relevant information of people's vital movement, could satisfy the deeper requirement of modern Chinese medicine, by these appreciable the physical-chemical parameters are are further analyzed and researched, therefrom find or find the thing that some is regular, the research of Chinese medicine is pushed to higher level, and disclosed some unknown phenomenons in the traditional medicine with this.Current carry out this research work the detecting instrument that generally adopts or equipment uses is to measure a certain single parameter mostly, and with the direct electrodes in contact formula of skin structure, kind electrode and used necessary instrument when detecting tissue or skin surface as conductor, quasiconductor or general electrolyte are considered.Though can detect some information, owing to adopt high voltage (more than the 10V) to detect its conductive capability by human body at the specific place of required body surface.In fact oneself exceeds the tolerant voltage of organism through having destroyed the normal physiological status of human body cell to the method for this direct chafe tissue, and cell membrane is breakdown.The excretory body fluid of body surface in addition, moisture content has formed polarization naturally between body surface and electrode, disturb and affect the detection to biological information, makes resulting data lose due value.

The purpose of this invention is to provide a kind of is not conducting channel with the human body, only acts on the human acupoint block with pulse voltage by Membrane cover, and is with reference to zero potential with this natural loop of the direct-to-ground capacitance of human body own, just can record the pick off of acupuncture point multiparameter.The result who detects is one and connects the function curve that changes in time, and is analysable.

Ultimate principle of the present invention is: as the epistasis dielectric substance that is changing, i.e. class ferroelectric thinks that each organ of human body is made up of molecular cell whole organism, and cell, endochylema system are made up of the polymer of macromolecular structure.Because of the chemical change spontaneous polarization constantly takes place in body, the dielectric property that is changing with biological activity is arranged, yet there is not the self power generation polarization in the medium of general non-life body, dielectric constant is also corresponding stable and smaller, and as the ferroelectric property of life entity, have in external electric field, under the effect in magnetic field, produce the spontaneous polarization phenomenon of direction unanimity.This amount of polarization affects the variation of this physical parameter of dielectric constant along with the variation of vital movement.Take technological means at this,, be converted into the continuous signal that correspondent voltage changes the variation of the dielectric constant of the specific position of body surface.The regional area that human body skin is formed by the electrode that is in contact with it is described as the structure shown in Fig. 1 left side; Among the figure; A is an epiderm skin; B is corium and hypodermic layer, DJ, is ordinary electrode (be directly foregoing in the electric pole type structure of contact skin), and C is conductive paste or epidermis secretions.Figure the right DJ2 is a sensor head of the present invention, and D is a deielectric-coating.Because we have adopted the electrode that has deielectric-coating, Ex in the model, Ri, Rc can neglect in principle, and what obtain is by Cj, Esc, Rs, Rb and by sweat gland, antiperspirant pipe in the skin, the environmental model that the secretions of skin surface is formed, the numerical value of Cp, Rp is approximately constant for certain same area of people's individuality.If the skin surface of fully carrying out again before detecting gives processing.Detecting resulting data at the place, acupuncture point like this is exactly an information magnitude relevant with people's vital movement.

Structural principle of the present invention is as follows: (Fig. 2 is the structure chart of pick off; Fig. 3 is corresponding circuit diagram) composite acupoint-parameter sensor, has detection head (1), temperature sensor (2), spring (3), support (4), Photoelectric Detection is to (6) etc., leading section at detection head (1) is with Membrane cover (7), dark slide (5) is housed and is fixed on Photoelectric Detection on the pedestal (8) to (6) in rearward end, whole detection head is inserted in the spring (3), is contained in axial sliding on the support (4), this support is tried hard to recommend down moving outside, spring (3) is compressed, and when Photoelectric Detection was just inserted in the displacement that dark slide (5) produces to (6), instrument began sampling (this moment, the D8 end of circuit diagram was high level).So just guaranteed that the suffered external force in each detected position all is constant voltage, has guaranteed the precision of each parameter thus.Pulse voltage (tripod by IC2 provides) acts on the acupuncture point block by Membrane cover (7), is with reference to zero potential with this natural loop of the direct-to-ground capacitance of human body own, and the detection by to resistance R 2 two ends pulse current responses obtains its dielectric constant values.Temperature sensor (2) is a negative temperature coefficient temperature of transistor sense diode, and pick off directly is welded in the preceding top in the detection head (1).Detection head is partly drawn with two lead-in wires (9), (10), and encapsulates with encapsulant (11) in the exit, and it is the 3-4 millimeter that detection head (1) can adopt diameter, and thickness is that 0.2 millimeter high purity oxygen free copper material is processed into through calendering.Membrane cover (7) can adopt the processing of high molecular material of low-k to make.The force value that detected position and detection head are axial can be adjusted between 70～120 grammes per square metres.

The circuit working principle of Fig. 2 is as follows: fet V1; V2 and transistor V3; V4 forms the differential amplifier stage of low noise high input impedance; be used for detecting the transient state information on the sample resistance R2; second level amplifier is made of the integrated amplifier of both-end input single-stage output 1/4IC1 LM324 A1; the potentiometer WP1 of its in-phase end uses for the modulus adjustment; R15 is to source follower V5 for the signal process; V6 makes final stage through final stage operational amplifier A 2 again and amplifies, output 0-5V analog level; wherein resistance R 22; 23; 24; 25 is the resistance of outer computer I/O mouth programme-control amplifier A2 gain; by computer digit amount delivery outlet D1, D2, D3; the control of D4 position; 16 stage gain amounts are arranged, crystal diode VD2,3; 4,5 as the final stage overload protection.By IC2NE555 and transistor gate V7, V8, V9, and digital interface D5, D6, D7 forms the programme-control pulse signal generator, by computer system digital quantity interface data control impuls repetition rate and width, carry out machine recognition when being used as, when analyzing, adjust usefulness automatically by system, the output pulse is fed to detection head from the IC2-3 end.Resistance R 49, R31, WP4 and transistor temperature sensor VDt form uneven bridge for measuring temperature, are amplified to 0-5V output as computer simulation amount input quantity with the proportional d. c. voltage signal of temperature by A3.IC1A4 and potentiometer WP5 are connected into the gain adjustment of voltage follower as A3.To (6), promptly VDg can hold the digital quantity input signal to the displacement signal converting digital amount of probe as the computer DO that feeds by Photoelectric Detection, with when the suitable pressure (70～120 grammes per square metre) data are adopted into computer.

Direct current integrated stable voltage circuit LM7805 general+12V voltage step-down also is stabilized to+5V, uses for temperature detection bridge circuit and amplifying circuit.

The present invention changes structure in the past: owing to added the thin film of one deck high stability low-k at the sampling end with contact skin, so avoided electrode directly to contact with body surface, effectively overcome ionization, power supply effect between electrode and skin surface 1.; 2. will measure the human-body conduction ability and change the detection spontaneous polarization strength into; 3. measure low pressure burst pulse with driving voltage, employing adjustable repetitive frequency, and with human body as the reference zero potential, so only use single electrode to detect, make exciting current not influence human body, kept the naturalness of human body therefore to improve the verity and the objectivity of data greatly; 4. end of probe can detect by optoelectronic components the pressure of skin, and makes it remain on optimum pressure.Can also obtain the relative resistance value in this cave district in addition by mathematical analysis to its impulse response, the part of going forward side by side is separated out capacitive reactance, induction reactance and the loss value in the impedance, set up the mathematical model based on electrical domain in this cave district with this parameter that obtains, remove this and also can record temperature value.

This invention obtains fabulous effect in the quantitative measurement of acupuncture point and specific part, aspect object acupuncture point characteristic research and Clinical detection work, also showing stable performance, substantially do not influence the detected object life state, thereby the character of object of study also there is new discovery, frame for movement of the present invention in addition is simple, the circuit structure compactness, be designed to the smart machine interface shape is the trend of detecting instrument development, when only take limited hardware when online with the main flow microcomputer, with other as single-chip microcomputer, digital instrument connects also very simple, therefore, the parameter measurement for the organism body surface point is with a wide range of applications.

Component specification table: R1:10K R2:6.8K R3, R4:0.3K R5, R7:3.3K R6:2.2KR8.R9:0.47K R11, R12:10K R13:470 Ω R14:24K R15:2.2K16:4.7K R17, R18:3.3K R19:15K R20, R21:1MR22, R23, R24, R25 200K R26:10K R27:50K R28:10KR29:1.2K R30, R31:4.7K R32:10K R33:0.47KR34, R39, R41:5.1 K R28, R40, R42:330KR35, R36, R37:5.1 K R43:1K* R44, R45:100K R46:250KR47:500K R48:1.2K R49:0.47K R50:4.7KC1:100P C2:100 microfarad C3:0.01 microfarad DVt: transistor temperature sensor WP1:1KDVg: optoelectronic position detection components WP2:22KDV1:1N4001DV2, DV3, DV4, DV5:1N4148 WP3:4.7KV1, V2, V5V6:3DJ6 WP4:7KV3, V4, V7, V8, V9:3DG100IC1:LM324IC2:NE555IC3:LM7805

Claims (3)

1. composite acupoint-parameter sensor, has detection head (1), temperature sensor (2), spring (3), support (4), Photoelectric Detection is to (6) etc., it is characterized in that leading section in detection head (1), be with Membrane cover (7), dark slide (5) be housed and be fixed on Photoelectric Detection on the pedestal (8) to (6) in rearward end, whole detection head is inserted in spring (3), be contained in axial sliding on the support (4), this support is tried hard to recommend down moving outside, and spring (3) is compressed, when Photoelectric Detection is just inserted in the displacement that dark slide (5) produces to (6), (this moment, the D8 end of circuit diagram was high level) instrument begins sampling, pulse voltage (tripod of IC2 provides) acts on the acupuncture point block by Membrane cover (7), to the inspection of resistance R 2 two ends pulse currents response then, obtains its dielectric constant values.

2. according to the described composite acupoint-parameter sensor of claim 1, it is characterized in that described temperature sensor (2) is a negative temperature coefficient temperature of transistor sense diode, pick off directly is welded in the preceding top in the detection head (1), detection head is partly drawn with 2 lead-in wires (9) (10), and in exit usefulness encapsulant (11) encapsulation, described Membrane cover (7) adopts the processing of high molecular material of low-k to make.

3. according to claim 1 or 2 described composite acupoint-parameter sensors, it is characterized in that it is the 3-4 millimeter that described detection head (1) can adopt diameter, thickness is that 0.20 millimeter high purity oxygen free copper material is processed into through calendering, the force value that detected position and detection head are axial can be adjusted between 70～120 grammes per square metres.

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