An meridian detector with pressure control and four-electrode detection

Abstract

The present invention discloses a meridian measuring instrument with pressure control and four-electrode detection, comprising: an auxiliary unit, a detection unit connected to the auxiliary unit via a connecting cable, and a host computer connected to the detection unit signal; the auxiliary unit is provided with at least two auxiliary electrodes, and the detection unit is provided with at least two auxiliary detection electrodes; wherein the detection unit comprises a housing, a reduction gearbox fixedly arranged at one end inside the housing, a direct current fixed to the reduction gearbox, a gearbox output screw fixed to the reduction gearbox, a movable top block threadedly connected to the gearbox output screw, a pressure spring fixed to the movable top block, a connecting slider fixed to the pressure spring, a detection electrode insulating rod fixed to the connecting slider, and detection electrodes A1 and A2 fixed to the detection electrode insulating rod. According to the present invention, the interrelated technical solutions and calculation and calibration methods are the rules mined after summarizing and analyzing a large amount of clinical data, and at the same time incorporate mature electronic technology.

Description

Technical Field

[0001] The present invention relates to the technical field of meridian measuring instruments, in particular to a meridian measuring instrument with pressure control and four-electrode detection. Background Art

[0002] Meridian syndrome differentiation is based on the physiology and pathology of the meridians and their associated internal organs. It analyzes the clinical manifestations of the meridians and their associated internal organs under pathological conditions, thereby identifying the location, cause, pathogenesis, and characteristics of the disease, providing a basis for treatment. Based on the theory of meridians, meridian syndrome differentiation analyzes and synthesizes several patient symptoms and signs to determine the meridian, internal organ, and organ to which the disease belongs, thereby further determining the cause, nature of the lesion, and pathological mechanism. It is a dialectical method that is an important part of traditional Chinese medicine diagnosis.

[0003] Meridians are the pathways through which qi (vital energy) flows throughout the body and are the pathways through which diseases develop and spread. Distributed throughout the body, they connect qi and blood with the internal organs, limbs, and joints, communicating internally and externally, enabling coordination among various parts of the body to complete various physiological activities. Meridians are reflected on the body's surface, and various abnormal reactions can occur at the points along their course, particularly at key acupoints where qi accumulates, also known as origin points.

[0004] From ancient times to the present, doctors have always used their sensory methods, supplemented by patients' self-reports, to evaluate patients' abnormal conditions of their original acupoints, such as numbness, soreness, pain in the acupoints, abnormal sensitivity to cold and hot stimuli, changes in skin color, desquamation, nodules, etc. This diagnostic process is highly subjective and there is no quantifiable objective detection method. This leads to certain uncertainties in efficacy evaluation and diagnosis. The lack of objective scientific methods has also affected the teaching and inheritance of this Chinese medicine dialectical technique.

[0005] With the development of electronic biotechnology, Japanese scholar Yoshio Nakako created the Liangdaoluo theory. Subsequently, China and many countries have carried out extensive research on meridian and acupoint impedance technology, namely Liangdaoluo technology. Studies have shown that the impedance value of acupoint impedance, especially the impedance of the original acupoint, is closely related to the state of the meridians. This has undoubtedly found a new path of modern science and technology for the objective development of meridian diagnosis.

[0006] The meridian measuring instrument is a medical device that assists Chinese medicine doctors in conducting meridian diagnosis. Meridian diagnosis and four-diagnosis diagnosis are both important dialectical methods in traditional Chinese medicine.

[0007] While the impedance values of the Yuan acupoints on the meridians can reflect the condition of the meridians, the results of this measurement are subject to numerous interference factors. This is because acupoints on the human body have very specific electrical properties, and to date, a mathematical model for their electrical characteristics has not yet been established. From the perspective of impedance measurement, human acupoints are not ideal impedance detectors. Differences in electrode pressure, alternating current (AC) versus direct current (DC), AC frequency, voltage, and current, as well as variations in skin moisture levels within the same patient and at the same measurement site, can all affect the test results. Furthermore, the calculation of the impedance values of the Yuan acupoints on each meridian to derive a meridian syndrome diagnosis consistent with Traditional Chinese Medicine (TCM) theory poses significant challenges to the development of meridian measuring instruments as medical devices. Summary of the Invention

[0008] To address the shortcomings of the prior art, the present invention provides a meridian measuring instrument with pressure control and four-electrode detection. The interrelated technical solutions and calculation and calibration methods are based on the analysis of a large amount of clinical data and incorporate mature electronic technology. To achieve the above-mentioned objectives and other advantages of the present invention, a meridian measuring instrument with pressure control and four-electrode detection is provided, comprising:

[0009] An auxiliary unit, a detection unit connected to the auxiliary unit via a connection cable, and a host computer connected to the detection unit by signal;

[0010] The auxiliary unit is provided with at least two auxiliary electrodes, and the detection unit is provided with at least two auxiliary detection electrodes;

[0011] The detection unit includes a housing, a reduction gearbox fixedly arranged at one end of the interior of the housing, a DC power supply fixed to the reduction gearbox, a gearbox output screw fixed to the reduction gearbox, a movable top block threadedly connected to the gearbox output screw, a pressure spring fixed to the movable top block, a connecting slider fixed to the pressure spring, a detection electrode insulating rod fixed to the connecting slider, and detection electrodes A1 and A2 fixed to the detection electrode insulating rod;

[0012] A pad-type force sensor is located below the connecting slider and fixed to the housing, and an outer ring of detection electrodes is in contact with the pad-type force sensor. In this application, the auxiliary unit has two auxiliary electrodes, the detection unit has two detection electrodes, and there is an outer ring of detection electrodes outside the two detection electrodes. This outer ring is connected to a force sensor that can sense the absolute detection force applied by the operator.

[0013] During use, the person being tested (patient) holds the auxiliary unit, and the tester (doctor) holds the detection unit. According to the acupoint position indicated on the small LCD screen on the detection unit, the detection electrodes A1 and A2 are pressed on the acupoint to be tested. The pressing force sensed by the outer ring of the detection electrode must be within the allowable range indicated on the small LCD screen. Then, the button switch is pressed. The impedance detection of the acupoint is completed after 15-20 seconds. After completion, the small LCD screen will display the measured impedance value aXL(R) of the acupoint, which is the value before correction. Among them, X is a number 1-12, which is one of the 12 acupoints, and L / R is left or right.

[0014] After the impedance test of one acupoint is completed, the small LCD screen will indicate the location of the next acupoint until all 24 (12X 2) acupoints are tested. After completion, the core processor (MCU) of the host will perform calculations and display the twelve meridian bar graph on the main LCD screen of the host, providing auxiliary reference for meridian differentiation for Chinese medicine practitioners.

[0015] An insulating isolation gap is formed between the detection electrode A1 and the detection electrode A2. There is no non-metallic insulating medium in this gap, and it is only insulated by air. This is to facilitate cleaning and prevent dirt, and to avoid leakage or short circuit between the two independent electrodes due to dirt.

[0016] Specifications of the pressure spring are: outer diameter 6mm, steel wire diameter 0.5mm, natural length 20mm, and elastic coefficient 0.25N / mm. When the device is in use, the two detection electrodes of the detection unit have two working states of relative pressing force on the acupoint skin: 2N and 3.5N.

[0017] 2N state: There is a 3mm pre-compression in the initial position. When the detection electrodes 14 and 15 contact the skin and are pressed to be level with the outer ring, the displacement stroke A of the detection electrode is 5mm, so the total compression of the spring is 8mm (5+3), and the relative force of the detection electrode on the original acupoint skin is 2N.

[0018] 3.5N state: Based on the 2N mode, the gearbox output screw 3 drives the movable top block 22 with internal threads to move. At this time, the spring 20 is compressed by another 6mm, which increases the relative force by 1.5N.

[0019] This invention proposes a set of interrelated technical solutions and calculation and calibration methods that address the numerous issues previously discussed with meridian impedance detection. This approach has been industrialized into a fully functional medical device for meridian-assisted diagnosis: a meridian measuring instrument with detection force control and four-electrode detection. This interrelated technical solution and calculation and calibration method are based on patterns discovered through the analysis of extensive clinical data and incorporate sophisticated electronic technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1A schematic diagram of the three-dimensional structure of the meridian measuring instrument with pressure control and four-electrode detection according to the present invention;

[0021] Figure 2 Schematic diagram of the auxiliary unit structure of the meridian measuring instrument with pressure control and four-electrode detection according to the present invention;

[0022] Figure 3 This is a schematic structural diagram of the meridian measuring instrument with pressure control and four-electrode detection according to the present invention when the detection unit is not in contact with the skin;

[0023] Figure 4 Schematic diagram of the structure of the meridian measuring instrument with pressure control and four-electrode detection according to the present invention when the detection unit contacts the skin detection electrode with a contact force of 2N;

[0024] Figure 5 Schematic diagram of the structure of the meridian measuring instrument with pressure control and four-electrode detection according to the present invention when the detection unit contacts the skin detection electrode with a contact force of 3.5N;

[0025] Figure 6 A top view of the detection electrodes A1-14 and A2-15 of the meridian measuring instrument with pressure control and four-electrode detection according to the present invention;

[0026] Figure 7 Schematic diagram of the structure of a gasket-type force sensor of a meridian measuring instrument with pressure control and four-electrode detection according to the present invention;

[0027] Figure 8 Schematic diagram of the four-electrode detection structure of the meridian measuring instrument with pressure control and four-electrode detection according to the present invention;

[0028] Figure 9 The figure is a bar graph of the impedance values of the twelve meridians of the meridian measuring instrument with pressure control and four-electrode detection according to the present invention. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] Introduction to Traditional Chinese Medicine's Yuan Acupoints and Meridians (also known as Channels):

[0031] Yuan points are the sites where vital energy from the internal organs passes and resides. Each of the twelve meridians has a Yuan point near the wrist and ankle joints, making up a total of 24 Yuan points. In clinical practice, Yuan points can be used to treat pathologies of the corresponding internal organs. The responses of these points can also be used to infer the health and function of the internal organs.

[0032] The twelve meridians are the main body of the meridian dialectical system, with the main characteristics of being consistent with the exterior and interior meridians and corresponding organs. They include the three Yin meridians of the hand (the hand Taiyin lung meridian, the hand Jueyin pericardium meridian, and the hand Shaoyin heart meridian), the three Yang meridians of the hand (the hand Yangming large intestine meridian, the hand Shaoyang triple burner meridian, and the hand Taiyang small intestine meridian), the three Yang meridians of the foot (the foot Yangming stomach meridian, the foot Shaoyang gallbladder meridian, and the foot Taiyang bladder meridian), and the three Yin meridians of the foot (the foot Taiyin spleen meridian, the foot Jueyin liver meridian, and the foot Shaoyin kidney meridian). In addition, there are the Ren and Du meridians, which are not covered by this patent.

[0033] The meridian acupoints specified by the measuring instrument of this application are shown in the following table:

[0034]

[0035]

[0036] Note: Yuan points correspond to the 12 meridians but are divided into left and right. Therefore, there are two Yuan points on the left and right sides of each meridian, for a total of 24 Yuan points (12 x 2) tested.

[0037] Reference Figure 1 , a meridian measuring instrument with pressure control and four-electrode detection, comprising:

[0038] An auxiliary unit, a detection unit connected to the auxiliary unit via a connection cable, and a host computer connected to the detection unit by signal;

[0039] At least two auxiliary electrodes are provided on the auxiliary unit, and at least two auxiliary detection electrodes are provided on the detection unit; the most characteristic feature of this measuring instrument is that the auxiliary unit has two auxiliary electrodes, the detection unit has two detection electrodes, and there is also an outer ring of detection electrodes outside the two detection electrodes, and the outer ring is connected to a force sensor that can sense the absolute detection force applied by the operator.

[0040] During use, the person being tested (patient) holds the auxiliary unit, and the tester (doctor) holds the detection unit. According to the acupoint position indicated on the small LCD screen on the detection unit, the detection electrodes A1 and A2 are pressed on the acupoint to be tested. The pressing force sensed by the outer ring of the detection electrode must be within the allowable range indicated on the small LCD screen. Then, the button switch is pressed. The impedance detection of the acupoint is completed after 15-20 seconds. After completion, the small LCD screen will display the measured impedance value aXL(R) of the acupoint, which is the value before correction. Among them, X is a number 1-12, which is one of the 12 acupoints, and L / R is left or right.

[0041] After the impedance test of one acupoint is completed, the small LCD screen will indicate the location of the next acupoint until all 24 (12X 2) acupoints are tested. After completion, the core processor (MCU) of the host will perform calculations and display the twelve meridian bar graph on the main LCD screen of the host, providing auxiliary meridian diagnosis reference for Chinese medicine practitioners.

[0042] like Figure 3-5 As shown, the detection unit includes a housing 8, a reduction gearbox 1 fixedly mounted at one end of the housing 8, a DC power supply 2 fixed to the reduction gearbox 1, a gearbox output screw 3 fixed to the reduction gearbox 1, a movable top block 22 threadedly connected to the gearbox output screw 3, a pressure spring 20 fixed to the movable top block 22, a connecting slider 19 fixed to the pressure spring 20, a detection electrode insulating rod 11 fixed to the connecting slider 19, and detection electrodes A1-14 and A2-15 fixed to the detection electrode insulating rod 11; a gasket-type touch force sensor 18 located below the connecting slider 19 and fixed to the housing 8, and a detection electrode outer ring 13 abutting against the gasket-type touch force sensor 18. Position sensors a4 and b5, a magnet 6 fixed to the housing 8, and a position sensor PCB 7 fixed to the movable top block 22 are fixed to the side of the movable top block 22. The DC motor 2 drives the gearbox output screw 3 to rotate after being decelerated and torque-increased by the reduction gearbox 1; the rotation of the gearbox output screw 3 drives the movable top block 22 with an internal thread to move; the movement of the movable top block 22 compresses the pressure spring 20; when the movable top block 22 moves, the position sensor PCB 7 connected to it moves together; Position sensors a-4 and b-5 on 7 will also move accordingly; the two position sensors are surface-mount Hall effect sensors, with a distance h of 6 mm between them; the position sensors work together with a magnet 6 mounted on the inner side of the housing to sense travel, and the magnet material is a 4×4 mm square neodymium iron boron; a gasket-type touch force sensor fixing device 9 fixes the sensor fixing plate to the housing 8; 10 is the connection surface, that is, the outer ring of the non-metallic detection electrode is connected to the sensor touch plate in an interference fit and glue-coated manner; 11 is the detection electrode insulating rod, one end of which is embedded with two detection electrodes, detection electrode A1-14 and detection electrode A2-15, with leads welded to them using a plastic injection molding process, and the other end is connected to the pressure spring 20 via a connecting slider 19 to deform it; 17 is the wiring hole in the detection electrode insulating rod, through which two detection electrode wires, welded to the lead welding hole 12 of detection electrode A1 and the lead welding hole 16 of detection electrode A2, are led out.

[0043] The specifications of the pressure spring 20 are: outer diameter 6mm, steel wire diameter 0.5mm, natural length 20mm, and elastic coefficient is 0.25N / mm. When the equipment is in use, the detection electrode A1-14 and the detection electrode A2-15 of the detection unit have two working states of relative pressing force on the acupoint skin: 2N and 3.5N.

[0044] 2N state: There is a 3mm pre-compression in the initial position. When the detection electrodes A1-14 and A2-15 contact the skin and are pressed to be level with the outer ring, the displacement stroke A of the detection electrodes is 5mm, so the total compression of the spring is 8mm (5+3), and the relative force of the detection electrodes on the skin of the original acupoint is 2N.

[0045] 3.5N state: Based on the 2N mode, the gearbox output screw 3 drives the movable top block 22 with internal threads to move. At this time, the pressure spring 20 is compressed by another 6mm, which increases the relative force by 1.5N.

[0046] like Figure 6 As shown, the diameter C of both the detection electrodes A1-14 and A2-15 is 3 mm. An insulating gap is formed between the detection electrodes A1-14 and A2-15. The width B of this gap is 1 mm. This gap is insulated solely by air, without any non-metallic insulating medium. This facilitates cleaning and prevents contamination, preventing leakage or short circuits between the two independent electrodes. The diameter D of the connection surface 10 between the detection electrode insulating rod 11 and the detection electrode is 6.7 mm, and the outer diameter E of the detection electrode outer ring 13 is 10 mm.

[0047] Further, such as Figure 2 As shown, the auxiliary unit includes an auxiliary electrode B2-300, an auxiliary electrode B1-400, an insulating isolation wall 200 disposed between the auxiliary electrodes B2-300 and B1-400, and an upper fixing cover 100 and a lower fixing cover 500 respectively fixed to the ends of the insulating isolation wall 200. The lower fixing cover 500 is provided with a connector hole 600 for the B1 electrode and a connector hole 800 for the B2 electrode. Both the upper fixing cover 100 and the lower fixing cover 500 are secured to the insulating isolation wall 200 via fixing screws 700. The upper fixing cover 100 and the insulating isolation wall 200 are both non-metallic brackets. The width of the insulating isolation wall 200 is 3 mm, and the surface of the insulating isolation wall 200 is higher than the surface of the auxiliary electrode B2-300 and the auxiliary electrode B1-400, preventing the sweat or dirt on the hands of the test person from invading, causing the insulation performance of the two independent auxiliary electrodes B2-300 and auxiliary electrodes B1-400 to be reduced; the connector hole 600 of the B1 electrode and the connector hole 800 of the B2 electrode are the two connector holes, that is, the connector socket parts, which correspond to the connector plugs of the two connecting cables respectively.

[0048] like Figure 7 As shown, the gasket-type touch force sensor 18 is a dedicated sensor for detecting the force of the outer ring 13 of the detection electrode. The gasket-type touch force sensor 18 is a gasket-type force sensor with a through hole in the middle. The gasket-type touch force sensor 18 has four strain resistors inside. The strain resistors are bonded to the four cross-shaped strain beams of the sensor using a glass micro-melting process. Figure 6 As shown in the figure, 60 is the touch disk, that is, the surface with touch sensitivity. The relative force between the touch disk 60 and the fixed disk 40 will cause the strain gauge in the sensor to deform, thereby outputting an electrical signal; the function of the middle through hole 70 is to allow the insulating rod of the detection electrode to pass through the gasket-type touch force sensor 18; 80 is a connecting groove for interference fit and glue-coated connection with the outer ring of the non-metallic detection electrode.

[0049] Example 1

[0050] Test instructions

[0051] Requirements for the detection signal: The open-circuit voltage effective value of the detection power supply is specified to be 12V, the detection current is a constant current source, and the effective current value is 200uA.

[0052] When detecting in the DC mode, one electrode in the hand-held auxiliary unit is the positive pole of the detection power supply, and one electrode in the detection unit is the negative pole of the detection power supply.

[0053] The mathematical average of the impedance values of the two measured Yuan acupoints needs to be calculated to make them one. The mathematical formula is aX=(aXL+aXR) / 2, where X is a number 1-12, which is one of the 12 Yuan acupoints, and L / R is left and right.

[0054] The detection process of a single Yuan acupoint on one side goes through three states (taking the left Hegu acupoint as an example):

[0055] In the first state, under the conditions of the relative force of the detection electrode being 2N, the absolute force being 1.5-2.5N, and the measuring signal being 100Hz AC, the detection is performed at the left Heguyuan point for 5 seconds, and the average impedance value within 5 seconds is recorded as R1.

[0056] In the second state, under the conditions that the relative force of the detection electrode is 3.5N, the absolute force is 1.5-2.5N, and the measurement signal is DC, the detection is performed at the Heguyuan point on the left side for 5 seconds, and the average impedance value within 5 seconds is recorded as R2.

[0057] In the third state, under the conditions of the relative force of the detection electrode being 2N, the absolute force being 1.5-2.5N, and the measuring signal being 10Hz AC, the detection is conducted at the Heguyuan point on the left side for 5 seconds, and the average impedance value within 5 seconds is recorded as R3.

[0058] The impedance value a4L of the left Hegu point is calculated as follows: a4L = 0.25R1 + 0.5R2 + 0.25R3. The coefficient 0.25 before R1, the coefficient 0.5 before R2, and the coefficient 0.25 before R3 are all weight coefficient values obtained through experiments. The general mathematical formula is: aXL(R) = 0.25R1 + 0.5R2 + 0.25R3

[0059] Note 1: The left side value cannot be directly used as an auxiliary basis for the diagnosis of the large intestine meridian condition. The right side impedance value must be averaged and corrected. The correction method is described below.

[0060] Note 2: The voltage conditions for the above three states during detection are: the open circuit voltage effective value is specified to be 12V, the detection current is a constant current source, and the current effective value is 200uA.

[0061] The outer ring 13 of the detection electrode is connected to a gasket-type touch force sensor 18, wherein the absolute pressing force is an absolute external force applied by the tester to the original acupoint of the person being tested through the outer ring of the detection electrode. One end of this non-metallic outer ring of the detection electrode contacts the skin at the original acupoint of the person being tested, and the other end is connected to a gasket-type force sensor, which can display the absolute pressing force value in real time on the LCD screen.

[0062] This measuring instrument stipulates that when detecting the impedance of the original acupoint, the absolute pressing force controlled by the operator must be maintained between 1.5-2.5N. All the algorithm formulas and parameter corrections of the measuring instrument are also based on this core parameter. After the signal of the gasket-type force sensor connected to the outer ring is amplified and processed, the absolute force value can be displayed in real time on the small LCD screen of the detection unit, and there are under-force and over-force prompts. The relative pressing force is a relatively constant force applied by the detection electrode through the spring inside the detection unit. This force is not affected by the pressure of the user and is 2N and 3.5N respectively. Three different detection signals of 100Hz AC, DC and 10Hz AC are used as the voltage source for detection. The open-circuit effective value of the detection voltage is constant at 12V. The detection is carried out in a constant current mode and the constant current effective value is stipulated to be 200uA.

[0063] like Figure 8As shown, this application uses a four-electrode method for detection. In the figure, r1, r2, r3, and r4 are uncertain skin contact resistances, RX is the original acupoint impedance that needs to be detected, A is a detection unit consisting of two electrodes, A1 and A2, and B is an auxiliary unit consisting of two electrodes, B1 and B2. A1, A2, B1, and B2 form four electrodes. The power supply signal, i.e., the constant current signal, is applied to the measured part by electrodes A1 and B1, and the detection sampling is completed by electrodes A2 and B2. Electrodes A2 and B2 are connected to the A / D sampler. Because the input impedance of the A / D collector is very high, the input current is almost close to zero, so the measurement error caused by the contact resistances r1 and r2 can be ignored. The signal flowing through the contact resistances r3 and r4 is a constant current signal, and the contact resistance will not cause measurement error. The electrical principle of the four-pole method is a mature technology and will not be described here.

[0064] Note: The A / D device used in this project is 24-bit.

[0065] There are three modes of detection power supply connected to the MCU, namely AC100Hz, DC and AC10Hz. The open-circuit voltage effective value of these three modes is 12V, and the output is a constant current of 200 microamperes. The output switching is controlled by the MCU, and different relative forces of detection electrodes are used to complete the detection of the impedance of each detection point, that is, a certain acupoint.

[0066] Meridian impedance dialectical calculation method and correction table

[0067] 1) The impedance values of a certain acupoint directly measured under three different voltage conditions, R1, R2, and R3, are weighted and calculated to obtain aXL or aXR, where X is a number 1-12, representing one of the 12 acupoints, and L / R represents left and right.

[0068] aXL(R)=0.25R1+0.5R2+0.25R3

[0069] After obtaining the 24 acupoint impedance values, namely a1L-a12L and a1R-a12R, the software in the device will calculate according to the following steps and methods:

[0070] 2) Calculate the average value of the left and right sides of a specific Yuan acupoint, a=(aL+aR) / 2

[0071] After calculation, the impedance values of the 24 left and right Yuan acupoints became the impedance values of the 12 Yuan acupoints without left and right distinctions, namely a1-a12;

[0072] 3) Calculate the mathematical average ap of the 10 impedance values a1-a10, where a11 and a12 are not included in the average calculation;

[0073] 4) Find the value closest to the calculated ap value in the average value ap in the impedance correction value table, select the corresponding row, and correct the impedance values of the 10 acupoints according to the addition and subtraction requirements in the table to obtain A1-A10;

[0074] 5) The values of a11 and a12 do not need to be corrected, that is, a11 = A11, a12 = A12;

[0075] 6) Yuan acupoint impedance value correction table

[0076]

[0077]

[0078] Note: The “-” in the mark means the measured value a minus the correction factor, and the “+” means the measured value a minus the correction factor.

[0079] The value a plus the correction number

[0080] Host display function

[0081] When the test is completed, the LCD screen on the main unit will display a bar graph of the impedance values of the twelve meridians. The highest and lowest meridians in the bar graph are the possible "symptoms" suggested by the instrument. The impedance values of the original points corresponding to the bar graph are the corrected values. Figure 9 . Figure 9 The middle is a bar graph of the impedance values of the twelve meridians. The meridian auxiliary diagnosis conclusion given is: the gallbladder meridian is higher than the average meridian activity, which is true, and the large intestine meridian is lower than the average meridian activity, which is false.

[0082] The corrections are shown in the following table:

[0083]

[0084] Note: 1. The value a in the example is the average value of (aL + aR) / 2, that is, the average impedance of the two Yuan acupoints on the same left and right meridians;

[0085] 2. The value closest to the actual average value ap=244.5 is 240 ohms. Select this row to obtain the correction value A1-A10.

[0086] 3. The impedance value of a single Yuan acupoint is obtained by weighted calculation under three different voltages and different relative pressure conditions. Because it has been explained in detail above, this calculation part is not given in the example.

[0087] The number of devices and processing scales described herein are intended to simplify the description of the present invention, and applications, modifications, and variations of the present invention will be apparent to those skilled in the art.

[0088] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A meridian measuring instrument with pressure control and four-electrode detection, characterized in that: include: An auxiliary unit, a detection unit connected to the auxiliary unit via a connection cable, and a host computer connected to the detection unit by signal; The auxiliary unit is provided with at least two auxiliary electrodes, and the detection unit is provided with at least two detection electrodes; The detection unit comprises a housing (8), a reduction gearbox (1) fixedly arranged at one end inside the housing (8), a DC motor (2) fixedly connected to the reduction gearbox (1), a gearbox output screw (3) fixedly connected to the reduction gearbox (1), a movable top block (22) threadedly connected to the gearbox output screw (3), a pressure spring (20) fixedly connected to the movable top block (22), a connecting slider (19) fixedly connected to the pressure spring (20), a detection electrode insulating rod (11) fixedly connected to the connecting slider (19), and a detection electrode A1 (14) and a detection electrode A2 (15) fixedly connected to the detection electrode insulating rod (11); A gasket-type touch force sensor (18) located below the connecting slider (19) and fixed to the housing (8), and a detection electrode outer ring (13) contact-connected to the gasket-type touch force sensor (18); The detection unit includes a first state, a second state and a third state during the detection process, wherein in the first state, the relative force on the detection electrode A1 (14) and the detection electrode A2 (15) is 2N, the absolute force is 1.5-2.5N, and the detection signal is a 100Hz AC condition. The detection is performed at one side of the acupuncture point for 5 seconds, and the first impedance average value R1 within 5 seconds is calculated; In the second state, the relative force on the detection electrode A1 (14) and the detection electrode A2 (15) is 3.5N, and the absolute force is 1.5-2.5N. Under the condition that the detection signal is DC, the detection is performed at the acupuncture point on one side for 5 seconds, and the second impedance average value R2 within 5 seconds is calculated; In the third state, the relative force on the detection electrode A1 (14) and the detection electrode A2 (15) is 2N, the absolute force is 1.5-2.5N, and the detection signal is 10Hz AC. The acupuncture points on one side are detected for 5 seconds, and the third impedance average value R3 within 5 seconds is calculated; The calculation formula of the impedance value of acupoints under three different voltage conditions is as follows: aXL(R) = 0.25R1+0.5R2+0.25R3, where R1, R2, and R3 are the average impedances at three different voltages.

2. A meridian measuring instrument with pressure control and four-electrode detection as claimed in claim 1, characterized in that: A position sensor a (4), a position sensor b (5), a magnet (6) fixed to the housing (8), and a position sensor PCB (7) fixed to the moving top block (22) are fixed to the side surface of the moving top block (22).

3. A meridian measuring instrument with pressure control and four-electrode detection as claimed in claim 2, characterized in that: An insulating isolation gap is formed between the detection electrode A1 (14) and the detection electrode A2 (15).

4. The meridian measuring instrument with pressure control and four-electrode detection as claimed in claim 1, characterized in that: The impedance value of an acupuncture point is obtained by calculating the first impedance average value, the second impedance average value and the third impedance average value, and the final impedance value is obtained by averaging the impedance values of the acupuncture points on the other side and correcting them.

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