WO2020124658A1

WO2020124658A1 - Non-invasive anti-interference blood glucose measuring instrument and blood glucose measuring method therefor

Info

Publication number: WO2020124658A1
Application number: PCT/CN2018/124207
Authority: WO
Inventors: 江昱莹; 廖睿禾
Original assignee: 林少玉
Priority date: 2018-12-18
Filing date: 2018-12-27
Publication date: 2020-06-25
Also published as: CN111329490A

Abstract

Disclosed is a non-invasive anti-interference blood glucose measuring instrument, comprising a first electrode (4), a second electrode (5), a third electrode (6) and a fourth electrode (7) exposed from a housing (1) and composed of conductors, and an operating circuit, wherein the first electrode (4), the third electrode (6) and the fourth electrode (7) are arranged on one end of the housing (1) to constitute a first probe (2), the second electrode (5) is individually arranged on the other end of the housing (1) to constitute a second probe (3), the first electrode (4) is connected to the second electrode (5), and the third electrode (6) is connected to the fourth electrode (7); and the working circuit comprises: a signal processing module (9), a storage unit (10), a microprocessor (11) and a power supply module (12). The first electrode (4), the second electrode (5), the third electrode (6) and the fourth electrode (7) are connected to the signal processing module (9), the microprocessor (11) is connected to the signal processing module (9), the storage unit (10) is connected to the microprocessor (11), and the power supply module (12) powers various elements by means of a circuit. The non-invasive anti-interference blood glucose measuring instrument can reduce external interference, capture more accurate data and measure a more accurate and real blood glucose value.

Description

Non-invasive anti-interference blood glucose detector and method for detecting blood glucose

Technical field

The invention relates to the field of medical equipment, in particular to a non-invasive anti-interference blood glucose detector and a method for detecting blood glucose.

Background technique

At present, countries around the world have begun to pay attention to the research and development of non-invasive (no-blood blood) blood glucose detector technology. Generally, electronic technology is used to obtain physiological data of the human body through the human skin. Although these known single electronic technologies can see the changes in the skin's electronic signals, it has been found through experiments that these changes are very subtle and extremely susceptible to interference from the external environment. Therefore, the accuracy of the detected data cannot be guaranteed and lacks practical significance.

Moreover, this non-invasive blood glucose tester only detects electronic data. Before there is no actual data calibration method, these electronic data are lack of authenticity, and the real blood glucose value of the human body cannot be directly calculated. At present, various home blood glucose meters, whether they are non-invasive or blood-binding, claim to be able to detect blood glucose values, but can only actually measure electronic data. Their accuracy is very different from the real blood glucose value, and their accuracy is greater than ±20 % Error. Taking the user's actual blood glucose value as 6.5, for example, an error of ±20% has caused the measured value to fluctuate between 5.2-7.8. Such a large floating range has caused some risk groups that are only high blood sugar to be misdiagnosed as diabetic patients, or some diabetic patients are misdiagnosed as dangerous people and delay treatment.

technical problem

Therefore, there is no effective non-invasive blood glucose detector that can make a real product.

It is not difficult to see that the existing technology still has certain defects.

Technical solution

The technical problem to be solved by the present invention is to provide a non-invasive anti-interference blood glucose detector and a method for detecting blood glucose, which can reduce external interference and capture more accurate data through rational design of electrodes and circuits. At the same time, through a scientific calibration method, a more real blood glucose value is measured.

To achieve the above objectives, the present invention adopts the following technical solutions:

A non-invasive anti-interference blood glucose detector includes a first electrode, a second electrode, a third electrode, and a fourth electrode made of a conductor exposed outside the housing; and a working circuit;

Among them, the first electrode, the third electrode and the fourth electrode are provided at one end of the casing to form a first probe, and the second electrode is separately provided at the other end of the casing to form a second probe; the first electrode is connected to the second electrode , Used to form a loop at two different locations that contact the human body to measure data; the third electrode is connected to the fourth electrode to form a loop at the first probe to contact the human body to measure the contact between the first probe and the human body Interfere with data;

Among them, the working circuit includes:

The signal processing module is used to filter and adjust the data intercepted by each electrode;

The storage unit is used to store the data of the user's blood test for the first correction;

Microprocessor, used to calculate the data obtained by the signal processing module;

Power module for power supply of all components;

The first electrode, the second electrode, the third electrode, and the fourth electrode are connected to the signal processing module, the microprocessor is connected to the signal processing module, the storage unit is connected to the microprocessor, and the power module supplies power to each component through the circuit.

Further, the signal processing module includes a signal filtering circuit, a signal amplifying circuit and a conversion circuit; the signal filtering circuit and the signal amplifying circuit are connected to two of the first electrode and the second electrode, the third electrode and the fourth electrode On the loop; the conversion circuit is connected to the signal amplification circuit, and the microprocessor is connected to the conversion circuit.

Further, a first capacitor and a second capacitor are connected between the signal filtering circuit and the signal amplifying circuit, and are used to store the signal current formed by the loop after being filtered and rectified by the signal filtering circuit.

Further, two middle conductors are respectively provided on the first probe, and a ring conductor is provided on the periphery of the two middle conductors, which serve as the first electrode, the third electrode, and the fourth electrode, respectively.

Further, it also includes a display unit for outputting data processing results; the display unit is connected to the microprocessor and exposed to the casing.

Further, it also includes an input unit for inputting the data of the blood drawn by the user to the storage unit, and the input unit is connected to the microprocessor.

A non-invasive anti-interference method for detecting blood glucose, including the following steps:

S01. Make the first probe with electrodes and the second probe with electrodes respectively contact different positions of the human body to form a loop, draw current to the electrodes on the first probe, detect electronic data, calculate and store in the storage unit;

S02. Subsequently, the blood glucose value of the user is detected by means of a hospital blood test, and the corrected blood glucose value is stored, and the data obtained in step S01 is used as the corrected data to match the corrected blood glucose value;

S03. When it is necessary to detect the blood glucose value, repeat step S01, compare the measured data at that time with the corrected data and corrected blood glucose value obtained at step S02, and obtain the user's instant blood glucose value at that time.

Further, the step S01 specifically includes:

S011. Make the first probe with the first electrode, the third electrode and the fourth electrode and the second probe with the second electrode contact different positions of the human body; make the first electrode, the second electrode and the human body form a measurement circuit ; Make the third electrode and the fourth electrode and the human body form a deduction loop at the contact point of the first probe;

S012. Energize the first electrode to draw a current I ₁ , and detect the electronic data of the measurement loop through the current I ₁ ;

S013. While the first electrode is energized to draw a current I ₁ , the third electrode is energized to draw a current I ₂ , and the electronic data of the deduction circuit is detected by the total current I ₁ +I ₂ ;

S014. The microprocessor processes and calculates the electronic data of the measurement circuit and the electronic data of the deduction circuit to obtain high-precision data after deducting contact interference, and stores the data;

Further, in the steps S012 to S013, the current I ₁ drawn by the first electrode and the current I ₁ +I ₂ drawn by the first electrode and the third electrode are stored in the first capacitor and the second capacitor respectively , And then discharge the electricity of the first capacitor and the second capacitor separately to obtain the electronic data of the measurement circuit and the deduction circuit respectively.

Further, whenever steps S011 to S014 are executed, the step S012 is repeatedly executed at a certain time interval before step S013, and the data with the most repetitions is taken as the electronic data of the measurement loop.

Further, whenever steps S011 to S014 are executed, after stimulating the user for 0.8-1.1 seconds in step S01, steps S012 to S014 are repeated multiple times to obtain stable and high-precision electronic data.

Further, before all the steps, there is a pre-processing step S00, which has the following steps,

S001. Classify the blood glucose levels of different levels according to the severity of the blood glucose level;

S002. Based on the standard blood glucose values of different categories, calculate the interval values of each category according to the positive and negative tolerances, and establish a database of numerical intervals of different categories;

The instant blood glucose value obtained in step S03 is compared with the database established in step S002 to obtain the user's status.

Beneficial effect

The non-intrusive anti-interference blood glucose detector provided by the present invention, by designing multiple electrodes to form multiple loops, can reduce the interference of the external environment during the measurement process by means of data deduction and make the detected data more accurate. And the design of the loop has the function of signal amplification and filtering, which further improves the sensitivity and accuracy of data detection.

The invention also provides a non-invasive anti-interference method for detecting blood glucose, which adopts a more advanced multi-electrode measurement method to avoid interference and obtain more accurate data. And has a scientific data calibration method, so as to match the true and accurate blood glucose values.

BRIEF DESCRIPTION

In order to more clearly explain the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, without paying any creative labor, other drawings can be obtained based on these drawings.

FIG. 1 is a schematic diagram of the external structure of a non-invasive anti-interference blood glucose detector provided by the present invention.

Figure 2 is a schematic diagram of the internal circuit structure.

Figure 3 is a schematic diagram of the circuit formed by the electrode and the human body.

Description of reference signs:

1. Housing: 2. The first probe

3. The second probe: 4. The first electrode

5. The Second Electrode 6. The third electrode

7. The Fourth Electrode 8. Display unit

9. Signal processing module 10. Storage unit

11. Microprocessor 12. Power module

13. Signal filter circuit 14. Signal amplification circuit

15. Conversion circuit 16. The first capacitor

17. The second capacitor

Best Mode of the Invention

To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the embodiments of the present invention and the accompanying drawings. It should be noted that the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example one

Please refer to FIG. 1 to FIG. 2, an embodiment of the present invention provides a non-invasive anti-interference blood glucose detector, which includes a first electrode 4, a second electrode 5 and a third electrode made of a conductor exposed outside the housing 1 Electrode 6 and fourth electrode 7; and working circuit;

Among them, the first electrode 4, the third electrode 6 and the fourth electrode 7 are provided at one end of the casing 1 to form a first probe 2, and the second electrode 5 is separately provided at the other end of the casing 1 to form a second probe 3; The first electrode 4 is connected to the second electrode 5 for contacting two different positions of the human body to form a loop to measure data; the third electrode 6 is connected to the fourth electrode 7 for contacting the human body at the first probe 2 to form a loop To measure the interference data at the contact between the first probe 2 and the human body;

Among them, the working circuit includes:

The signal processing module 9 is used to filter and adjust the data intercepted by each electrode;

The storage unit 10 is used to store the data of the user's blood test for the first correction;

The microprocessor 11 is used to calculate the data obtained by the signal processing module 9;

Power module 12, used for power supply of all components;

The first electrode 4, the second electrode 5, the third electrode 6, and the fourth electrode 7 are connected to the signal processing module 9, the microprocessor 11 is connected to the signal processing module 9, the storage unit 10 is connected to the microprocessor 11, and the power module 12 Provide power to each component through the circuit.

Unlike the prior art, the present invention does not simply use two electrodes to form a loop with the human body to detect blood glucose data, but uses four electrodes distributed on two probes to form multiple circuits with the human body to achieve interference data deduction The subtraction operation function makes the detection data more accurate.

The working principle of each electrode is shown in Figure 3. The four electrodes are respectively arranged on two probes and contact different positions of the human body. Preferably, the first probe 2 contacts the palm of a person and the second probe 3 contacts the thumb of the other hand. Among them, the first electrode 4 provided on the first probe 2 and the second electrode 5 provided on the second probe 3 form a loop, which can be energized to detect electronic data without intrusion. However, when the probe is in contact with human skin, it is easily affected by external factors such as contact effectiveness, humidity, and foreign objects, causing interference near the contact and affecting the stability and accuracy of the data. Therefore, in the present invention, the third electrode 6 and the fourth electrode 7 are provided at the first probe 2 to form a loop, and a deduction loop is formed at the contact point of the palm, which is specially used to detect and reduce external interference near the contact point.

In addition to the design of the electrode, the present invention also provides a storage unit 10 in the circuit, which is used to store the real blood glucose value measured by the user by blood drawing and the electronic data measured by the electrode, so as to achieve data calibration. Therefore, the present invention does not simply measure electronic signals. The specific calibration method will be described in detail in the blood glucose detection method below.

It should be noted that various buttons, switches and the like may be installed on the housing 1 to realize various control functions. However, these components are not the technical focus of the present invention and are not much related to the technical solution, and will not be repeated in the present invention. In addition, this structure is omitted in the drawings of the specification.

Preferably, the signal processing module 9 includes a signal filtering circuit 13, a signal amplifying circuit 14 and a conversion circuit 15; the signal filtering circuit 13 and the signal amplifying circuit 14 are connected to the first electrode 4 and the second electrode 5, the third The two circuits composed of the electrode 6 and the fourth electrode 7 are connected; the conversion circuit 15 is connected to the signal amplifying circuit 14, and the microprocessor 11 is connected to the conversion circuit 15.

The signal amplifying circuit 14 is used to receive and amplify the electrical signals transmitted by the electrodes, so that the weak electrical signals are more sensitive after amplification. The signal filtering circuit 13 is used for rectifying and filtering noise to obtain a clean signal. The conversion circuit 15 is used to convert an analog signal into a digital signal.

As a further preference, a first capacitor 16 and a second capacitor 17 are connected between the signal filtering circuit 13 and the signal amplifying circuit 14 for storing the signal current formed by the loop after being filtered and rectified by the signal filtering circuit 13 and stored therein .

For the distribution and structure of the electrodes on the first probe 2, the following structure is preferably adopted. The first probe 2 is respectively provided with two middle conductors, and a ring conductor is provided on the outer periphery of the two middle conductors as the first electrode 4, the third electrode 6 and the fourth electrode 7, respectively.

It should be noted that which of the three conductors corresponds to the first electrode 4, the third electrode 6 or the fourth electrode 7 is not actually the technical focus of the present invention. In general, it is preferable to use a ring conductor as the third electrode 6 and two middle conductors as the first electrode 4 and the fourth electrode 7, respectively. However, it is also possible to use a ring conductor as the first electrode 4 and two middle conductors as the third electrode 6 and the fourth electrode 7, respectively. The main purpose of setting three electrodes on the first probe 2 is to eliminate contact interference and improve data collection accuracy. Therefore, the arrangement of the first electrode 4, the third electrode 6, and the fourth electrode 7 is not excessively limited without departing from this design goal.

Preferably, it further includes a display unit 8 for outputting data processing results; the display unit 8 is connected to the microprocessor 11 and exposed to the housing 1. It also includes an input unit for inputting data of the user's blood test to the storage unit 10, and the input unit is connected to the microprocessor 11.

Of course, it does not exclude the case that the present invention does not have the display unit 8 and displays the result by means of signal transmission to an external display device. Similarly, it is also possible that the present invention does not have an input unit, and it is also a feasible solution to input data to the storage unit 10 by wireless or wired transmission by an external device.

The present invention provides a non-invasive anti-interference blood glucose detector. By designing multiple electrodes to form multiple circuits, the interference of the external environment during the detection process can be reduced by data deduction, and the detected data is more accurate. And the design of the loop has the function of signal amplification and filtering, which further improves the sensitivity and accuracy of data detection.

Embodiments of the invention

Example 2

This embodiment details a non-invasive anti-interference blood glucose detection method, and its essence is also the working process of the non-invasive anti-interference blood glucose detector described in the first embodiment.

A

This method advocates calibration and matching calculation with the real blood glucose value measured by blood drawing. Therefore, the detection of blood glucose value is not just a simple electronic data, but a value that actually matches the blood glucose value of the human body. This method is scientific and reasonable, and has high accuracy, which helps to accurately determine the blood glucose situation of the user and will not delay the diagnosis and treatment.

As mentioned above, simply intercepting the electronic data itself has no substantial effect on blood glucose detection, and no real blood glucose value is obtained. Therefore, the present invention devises a calibration process, that is, step S02 needs to be implemented, and the user's real blood glucose value is measured by way of blood sampling in the hospital and input into the blood glucose meter. Before inputting the blood glucose data, non-intrusive detection through normal electrodes is used to intercept high-precision electronic data, which can be matched with the real blood glucose value measured in step S02 to achieve calibration. This process is actually a learning process carried out by the blood glucose detector according to the actual physical condition of the user. Through calibration, a data matching system can be constructed to know the blood glucose value corresponding to different electronic data. Even, a database can be established to match the corresponding blood glucose level to inform the user of his physical condition.

It is generally recommended to calibrate every once in a while to maintain the accuracy of the data, because changes in blood glucose values will change over time and changes in body state. For diabetics, it is generally 1.5-3 months as a course of treatment, so it is scientific and reasonable to calibrate the blood test blood glucose at intervals.

The above-mentioned process of calibrating the blood drawn blood glucose value is an important technical breakthrough of the method of the present invention. The electronic data detected by electronic methods, even if the accuracy is high, is only a set of electronic data, not real blood glucose data. Even the widely used blood-gathering blood glucose meter at home is easily affected by impurities, blood concentration, and whether the blood reacts adequately in the instrument, etc., resulting in distortion of blood glucose value. The blood glucose value measured by the instrument is accurate only when the method of blood sampling in the hospital is used to detect the blood glucose value and the real blood glucose value is obtained for comparison and calibration.

For example, in the previously measured electronic data, the current value is 100 mA, and the blood glucose value corresponding to the electronic data is known. In the electronic data measured after that, the current value became 150 mA. The formula for calculating the blood glucose value is written in the microprocessor 11, and the corresponding blood glucose value at the time of occurrence can be calculated by the formula.

Specifically, the step S01 further specifically includes:

S011. Make the first probe 2 with the first electrode 4, the third electrode 6 and the fourth electrode 7 and the second probe 3 with the second electrode 5 contact different positions of the human body; The two electrodes 5 and the human body form a measurement circuit; the third electrode 6 and the fourth electrode 7 and the human body form a deduction circuit at the contact point of the first probe 2;

S012. Energize the first electrode 4 to draw a current I ₁ , and detect the electronic data of the measurement circuit through the current I ₁ ;

S013. While the first electrode 4 is energized to draw the current I ₁ , the third electrode 6 is energized to draw the current I ₂ , and the electronic data of the deduction circuit is detected by the total current I ₁ +I ₂ ;

S014. The microprocessor 11 processes and calculates the electronic data of the measurement circuit and the electronic data of the deduction circuit to obtain high-precision data after deducting contact interference, and stores the data;

Among the above steps, steps S011 to S014 are actually steps for realizing non-invasive detection of electrodes by using a blood glucose detector, which specifically describes the process of intercepting data by energizing four electrodes and a method of reducing external interference. The process of using a blood glucose tester for blood glucose testing everyday is to repeat the process of step S01.

More specifically, in the steps S012 to S013, the current I ₁ drawn by the first electrode 4 and the current I ₁ +I ₂ drawn by the first electrode 4 and the third electrode 6 are stored in the first capacitor In the 16 and the second capacitor 17, the electrical energy of the first capacitor 16 and the second capacitor 17 are then discharged to obtain the electronic data of the measurement circuit and the deduction circuit, respectively.

Each time the electrode is not invasively detected, the data can be repeatedly intercepted in certain steps, and valid data can be selected for calculation to further improve the accuracy of the detected data. Preferably, whenever steps S011 to S014 are executed, the step S012 is repeatedly executed at a certain time interval before step S013, and the data with the most repetitions is taken as the electronic data of the measurement loop.

For example, the first electrode 4 delivers a minute current I ₁ to the human body every 0.1 seconds, and the third electrode 6 delivers a tiny current I ₂ to the human body every 0.5 seconds. Then, 0.5 seconds ago, the first electrode 4 performed current energization detection multiple times (that is, the step S02 was repeatedly performed multiple times), and the data with the most repetitions could be captured as the electronic data of the measurement loop. At the 0.5th second, the first electrode 4 and the third electrode 6 draw current at the same time, and the current value used in the calculation is the sum of I ₁ +I ₂ .

It has been found through experiments that after the first probe 2 comes into contact with the human body contacts, it is not immediately possible to energize to obtain stable electronic data, but to stimulate the user for a certain time before the data tends to be stable. Therefore, it is preferable that whenever steps S011 to S014 are executed, after step S011 stimulates the user for 0.8-1.1 seconds, steps S012 to S014 are executed again, which is beneficial to obtain stable electronic data.

Furthermore, in addition to waiting for the data to stabilize, it is also possible to obtain valid data by repeatedly intercepting the data after the electrode contacts the contact of the human body. Preferably, each time steps S011 to S014 are executed, steps S012 to S014 are repeatedly executed multiple times to take the high-precision data with the most repetitions.

For example, after the electrode comes into contact with the contact of the human body, stable data appears in 0.8-1.1 seconds. Then, intercept data in the interval of 0.8-1.1 seconds, and restart multiple times to intercept multiple data in this interval to capture the valid data.

For further improvement of the determination calculation method, before all the steps, there may be a pre-processing step S00, which has the following steps,

For example, according to the severity of blood sugar level, it can be roughly divided into:

状态status	血糖值Blood sugar level
正常normal	5.45.4
危险群Risk group	6.56.5
糖尿病二型Type 2 Diabetes	10.810.8
糖尿病一型Type 1 diabetes	16.216.2

The tolerance value can be selected to be ±10%, and the interval value is determined:

状态status	血糖值区间Blood glucose level
正常normal	4.9-5.94.9-5.9
危险群Risk group	5.9-7.25.9-7.2
糖尿病二型Type 2 Diabetes	9.7-11.99.7-11.9
糖尿病一型Type 1 diabetes	14.6-17.814.6-17.8

The instant blood glucose value measured in step S03 can be directly compared with the blood glucose value interval, and immediately know which state the user is in, which is convenient for the doctor to track the treatment and adjust the medication. Because the electronic signal is very weak, everyone's response to the electronic will also be different. By correcting the type of user first, and then supplementing with a certain percentage of probability errors to narrow the range to approximate accuracy.

The above numerical interval distribution is only an application example, even if the numerical interval distribution is different, or further subdivided, it belongs to the concept of the present invention.

The invention provides a non-invasive anti-interference method for detecting blood glucose, which adopts a more advanced multi-electrode measurement method to avoid interference and obtain more accurate data. And has a scientific data calibration method, so as to match the true and accurate blood glucose values.

The above examples only express several implementations of the present invention, and their descriptions are more specific and detailed, but they should not be construed as limiting the patent scope of the present invention. It should be noted that, for a person of ordinary skill in the art, without departing from the concept of the present invention, a number of modifications and improvements can also be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the invention patent shall be subject to the appended claims.

Claims

A non-invasive anti-interference blood glucose detector, which is characterized by comprising a first electrode, a second electrode, a third electrode and a fourth electrode made of a conductor exposed outside the casing; and a working circuit;

Among them, the first electrode, the third electrode and the fourth electrode are provided at one end of the casing to form a first probe, and the second electrode is separately provided at the other end of the casing to form a second probe; the first electrode is connected to the second electrode , Used to form a loop at two different locations that contact the human body to measure data; the third electrode is connected to the fourth electrode to form a loop at the first probe to contact the human body to measure the contact between the first probe and the human body Interfere with data;

Among them, the working circuit includes:

The signal processing module is used to filter and adjust the data intercepted by each electrode;

The storage unit is used to store the data of the user's blood test for the first correction;

Microprocessor, used to calculate the data obtained by the signal processing module;

Power module for power supply of all components;

The first electrode, the second electrode, the third electrode, and the fourth electrode are connected to the signal processing module, the microprocessor is connected to the signal processing module, the storage unit is connected to the microprocessor, and the power module supplies power to each component through the circuit.
The non-invasive anti-interference blood glucose detector according to claim 1, wherein the signal processing module includes a signal filtering circuit, a signal amplifying circuit and a conversion circuit; the signal filtering circuit and the signal amplifying circuit are connected to the first The electrode and the second electrode, the two loops composed of the third electrode and the fourth electrode; the conversion circuit is connected to the signal amplification circuit, and the microprocessor is connected to the conversion circuit.
The non-invasive anti-interference blood glucose detector according to claim 2, characterized in that: a first capacitor and a second capacitor are connected between the signal filter circuit and the signal amplification circuit for signal current formed by the loop, Stored in the signal filter circuit after filtering and rectification.
The non-invasive anti-interference blood glucose detector according to claim 1, wherein the first probe is provided with two middle conductors, and the outer circumference of the two middle conductors is provided with a ring conductor, which serves as the first electrode , The third electrode and the fourth electrode.
The non-invasive anti-interference blood glucose detector according to claim 1, further comprising a display unit for outputting data processing results; the display unit is connected to the microprocessor and is exposed to the casing.
The non-invasive anti-interference blood glucose detector according to claim 1, characterized in that it further comprises an input unit for inputting data of the user's blood test to the storage unit, and the input unit is connected to the microprocessor.
A non-invasive anti-interference method for detecting blood glucose, characterized in that it includes the following steps:

S01. Make the first probe with electrodes and the second probe with electrodes respectively contact different positions of the human body to form a loop, draw current to the electrodes on the first probe, detect electronic data, calculate and store in the storage unit;

S02. Subsequently, the blood glucose value of the user is detected by means of a hospital blood test, and the corrected blood glucose value is stored, and the data obtained in step S01 is used as the corrected data to match the corrected blood glucose value;

S03. When it is necessary to detect the blood glucose value, repeat step S01, compare the measured data at that time with the corrected data and corrected blood glucose value obtained at step S02, and obtain the user's instant blood glucose value at that time.
The non-invasive anti-interference blood glucose detection method according to claim 7, wherein the step S01 specifically includes:

S011. Make the first probe with the first electrode, the third electrode and the fourth electrode and the second probe with the second electrode contact different positions of the human body; make the first electrode, the second electrode and the human body form a measurement circuit ; Make the third electrode and the fourth electrode and the human body form a deduction loop at the contact point of the first probe;

S012. Energize the first electrode to draw a current I 1 , and detect the electronic data of the measurement loop through the current I 1 ;

S013. While the first electrode is energized to draw a current I 1 , the third electrode is energized to draw a current I 2 , and the electronic data of the deduction circuit is detected by the total current I 1 +I 2 ;

S014. The microprocessor processes and calculates the electronic data of the measurement circuit and the electronic data of the deduction circuit to obtain high-precision data after deducting contact interference, and stores the data.
The non-invasive anti-interference blood glucose detection method according to claim 8, characterized in that: in steps S012 to S013, the current I 1 drawn by the first electrode is energized, and the first electrode and the third electrode are simultaneously energized to output The current I 1 +I 2 is stored in the first capacitor and the second capacitor respectively, and then the electrical energy of the first capacitor and the second capacitor is discharged to obtain the electronic data of the measurement circuit and the deduction circuit respectively.
The non-invasive anti-interference blood glucose detection method according to claim 8, characterized in that whenever step S011 to step S014 are executed, step S012 is repeatedly executed at a certain time interval before step S013, and the number of repetitions is taken The most data is the electronic data of the measuring circuit.
The non-invasive anti-interference blood glucose detection method according to claim 8 or 10, characterized in that each time steps S011 to S014 are executed, after step S01 stimulates the user for 0.8-1.1 seconds, the steps are repeated multiple times S012 to S014 to obtain stable and high-precision electronic data.
The non-invasive anti-interference blood glucose detection method according to claim 7, characterized in that:

Before all the steps, there is a pre-processing step S00, which has the following steps,

S001. Classify the blood glucose levels of different levels according to the severity of the blood glucose level;

S002. Based on the standard blood glucose values of different categories, calculate the interval values of each category according to the positive and negative tolerances, and establish a database of numerical intervals of different categories;

The instant blood glucose value obtained in step S03 is compared with the database established in step S002 to obtain the user's status.