Electric gas tank with adjustable pressure and gas tank pressure adjusting method

Abstract

The invention discloses a pressure-adjustable electric gas tank and a gas tank pressure adjusting method. The electric gas tank comprises a face shell, a base, a gas pump, an image acquisition module, a pressure sensor and a pressure adjusting module. The surface shell is arranged above the base, an air pump is arranged at the top of the surface shell, and an image acquisition module and a pressure sensor are arranged on the inner wall of the surface shell; the pressure sensor is used for measuring an air pressure value of a closed space in a surface shell of the electric gas tank; the air pump is used for exhausting or inflating the closed space in the surface shell of the electric air tank according to the air pressure adjusting instruction value; the image acquisition module is used for acquiring a user skin image in the face shell in the cupping process; the pressure adjusting module is used for processing the air pressure value and the user skin image and generating an air pressure adjusting instruction value.

Description

Technical Field

[0001] The invention relates to the field of medical cupping devices and feedback control technology, and in particular to an electric gas cylinder with adjustable pressure and a gas cylinder pressure regulating method. Background Art

[0002] Cupping therapy was called horn therapy in ancient times, also known as fire cupping gas and suction cup therapy. It uses cups as tools, uses combustion to remove air in the cups, creates negative pressure, and makes it adsorbed on the acupoints or the surface of the body where the cupping is to be done, produces stimulation, and makes the skin of the cupped part congested and congested, so as to achieve the purpose of preventing and treating diseases. Cupping device is one of the devices used by people for cupping therapy. The current electric scraping cupping device is one of them. The use of this device can not only perform cupping, but also has the functions of scraping and massage. When using the current cupping device for cupping, the user should pay attention to the adsorption strength. The control of the adsorption strength mainly depends on subjective experience. Too much or too little strength will affect the health care effect. At present, there is no cupping device that can quantitatively detect the pressure in the cup and realize self-adjustment of pressure or manual adjustment of pressure according to the patient's skin condition. In view of these shortcomings, a kind of electric gas tank that can adjust the pressure by itself or manually according to the user's use effect is studied and designed, which is worthy of clinical application and promotion. Summary of the invention

[0003] The present invention mainly solves the problem that when cupping with the current cupping device, the user's suction force is mainly controlled based on subjective experience and lacks accurate adjustment according to the user's use effect. The present invention discloses an electric gas tank with adjustable pressure and a gas tank pressure adjustment method.

[0004] In a first aspect of an embodiment of the present invention, a pressure-adjustable electric gas tank is disclosed, characterized in that it comprises: a surface shell, a base, an air pump, an image acquisition module, a pressure sensor, and a pressure regulating module;

[0005] The surface shell is arranged above the base, an air pump is arranged on the top of the surface shell, and an image acquisition module and a pressure sensor are arranged on the inner wall of the surface shell;

[0006] The pressure sensor is used to measure the air pressure value of the closed space inside the face shell of the electric gas tank;

[0007] The air pump is used to evacuate or inflate the enclosed space inside the face shell of the electric gas tank according to the air pressure adjustment instruction value;

[0008] The image acquisition module is connected to the pressure adjustment module and is used to acquire the user's skin image inside the face shell during the cupping process;

[0009] The pressure regulating module is connected to the image acquisition module, the pressure sensor and the air pump respectively, and is used to process the air pressure value and the user's skin image to generate an air pressure regulating instruction value.

[0010] The pressure-adjustable electric gas tank also includes a physiological parameter information acquisition module;

[0011] The physiological parameter information acquisition module is connected to the pressure regulation module and is used to acquire a set of physiological parameter information of the user; the set of physiological parameter information includes: a heart rate information sequence, a blood pressure information sequence, a blood oxygen saturation information sequence and a pulse information sequence.

[0012] The pressure regulating module is used to process the air pressure value and the user's skin image to generate an air pressure regulating instruction value, including:

[0013] The pressure regulating module obtains a set of physiological parameter information;

[0014] Performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value;

[0015] Performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value;

[0016] The chromaticity evaluation value, physiological evaluation value and air pressure value are jointly evaluated and processed to obtain an air pressure adjustment command value; the air pressure adjustment command value is used to represent the adjustment value of the air pressure in the closed space inside the face shell of the electric gas tank.

[0017] In a second aspect of the embodiments of the present invention, a method for regulating the pressure of a gas tank is disclosed, which is implemented by using the pressure-adjustable electric gas tank, and comprises:

[0018] Using a pressure sensor, measure the air pressure value of the enclosed space inside the face shell of the electric gas tank;

[0019] Using the image acquisition module, an image of the user's skin inside the face shell during the cupping process is acquired;

[0020] Using the pressure adjustment module, the air pressure value and the user's skin image are processed to generate an air pressure adjustment instruction value;

[0021] According to the air pressure adjustment instruction value, the air pump is used to evacuate or inflate the enclosed space inside the face shell of the electric gas tank.

[0022] The processing of the air pressure value and the user's skin image to generate an air pressure adjustment instruction value includes:

[0023] Acquire a set of physiological parameter information;

[0024] Performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value;

[0025] Performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value;

[0026] The chromaticity evaluation value, physiological evaluation value and air pressure value are jointly evaluated and processed to obtain an air pressure adjustment command value; the air pressure adjustment command value is used to represent the adjustment value of the air pressure in the closed space inside the face shell of the electric gas tank.

[0027] The performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value includes:

[0028] Obtain a standard skin image;

[0029] Represent the user skin image and the skin standard image as four-dimensional matrices X and Y respectively;

[0030] Performing difference feature calculation processing on the four-dimensional matrices X and Y to obtain difference feature quantities;

[0031] Using a preset chromaticity interval value set, the difference feature quantity is compared and processed to obtain chromaticity interval information to which the difference feature quantity belongs;

[0032] Determine the chromaticity evaluation value corresponding to the chromaticity interval information to which the difference feature quantity belongs, as the obtained chromaticity evaluation value.

[0033] The expression for the difference feature calculation process is:

[0034]

[0035] Wherein, |X·Y|4 represents the cross-correlation calculation of the row vectors of the 4th dimension of the four-dimensional matrices X and Y, ∑|X·Y|4 represents the accumulation of the cross-correlation calculation results of all the row vectors of the 4th dimension, Σ|XY| represents the accumulation of the absolute values ​​of the differences of the elements with the same subscript in the four-dimensional matrices X and Y, α1 and α2 are the preset first weighting factor and the second weighting factor respectively, I a is the difference feature quantity.

[0036] The performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value includes:

[0037] Obtaining a standard physiological parameter information set; the standard physiological parameter information set includes a standard value of heart rate, a standard value of blood pressure, a standard value of blood oxygen saturation, and a standard value of pulse;

[0038] Subtract the standard value of the corresponding category from each information sequence in the physiological parameter information set to obtain a difference sequence of the corresponding category;

[0039] Using the difference sequences of all categories, a matrix A to be evaluated is constructed; the row vector of the matrix to be evaluated is a difference sequence of one category;

[0040] Performing feature fitting processing on the matrix to be evaluated to obtain the best consistent approximation polynomial;

[0041] Performing cross-covariance matrix calculation processing on the matrix to be evaluated to obtain a cross-covariance matrix;

[0042] The row number corresponding to the maximum value of all diagonal elements of the cross-covariance matrix is ​​input into the best consistent approximation polynomial to obtain the physiological evaluation value.

[0043] The step of jointly evaluating the chromaticity evaluation value, the physiological evaluation value and the air pressure value to obtain the air pressure adjustment instruction value includes:

[0044] Obtain the standard air pressure value;

[0045] Calculate the difference ΔP between the air pressure value P and the standard air pressure value P0;

[0046] The chromaticity evaluation value, the physiological evaluation value and the difference ΔP are evaluated and calculated to obtain the air pressure adjustment instruction value.

[0047] The expression of the evaluation calculation is:

[0048]

[0049] Among them, ε is the air pressure adjustment command value, μ is the chromaticity evaluation value, and v is the physiological evaluation value.

[0050] The beneficial effects of the present invention are:

[0051] The invention discloses an electric gas cylinder with adjustable pressure and a method for adjusting the pressure of the gas cylinder, which mainly solves the problem that when cupping with a current cupping device, the suction force of the user is mainly controlled based on subjective experience and lacks accurate adjustment based on the use effect of the user.

[0052] When calculating the air pressure adjustment command value, the present invention performs color evaluation processing on the user's skin image to obtain a chromaticity evaluation value; performs physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value; and performs joint evaluation processing on the chromaticity evaluation value, the physiological evaluation value and the air pressure value to obtain the air pressure adjustment command value. By comprehensively considering multi-source information, the air pressure adjustment command value is fully and accurately calculated, ensuring the adjustment effect.

[0053] The present invention establishes a corresponding model specifically for each type of image feature for the physiological parameter information set and the user skin image, thereby eliminating irrelevant quantities and noise quantities and ensuring the accuracy of the evaluation effect.

[0054] When the present invention evaluates the color of the user's skin image, it mainly evaluates the purple degree. If the purple degree of the user's skin image is darker, an adjustment amount is generated to reduce the pressure, thereby ensuring the health care effect of the gas cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 1 is a flow chart for implementing the method of the present invention;

[0056] Figure 2 It is a composition diagram of the device of the present invention. DETAILED DESCRIPTION

[0057] In order to better understand the content of the present invention, an embodiment is given here.

[0058] Figure 1 1 is a flow chart for implementing the method of the present invention; Figure 2 It is a composition diagram of the device of the present invention.

[0059] In a first aspect of an embodiment of the present invention, a pressure-adjustable electric gas tank is disclosed, comprising: a housing, a base, an air pump, an image acquisition module, a pressure sensor, and a pressure regulating module;

[0060] The surface shell is arranged above the base, an air pump is arranged on the top of the surface shell, and an image acquisition module and a pressure sensor are arranged on the inner wall of the surface shell;

[0061] The pressure sensor is used to measure the air pressure value of the closed space inside the face shell of the electric gas tank;

[0062] The air pump is used to evacuate or inflate the enclosed space inside the face shell of the electric gas tank according to the air pressure adjustment instruction value;

[0063] The image acquisition module is connected to the pressure adjustment module and is used to acquire the user's skin image inside the face shell during the cupping process;

[0064] The pressure regulating module is connected to the image acquisition module, the pressure sensor and the air pump respectively, and is used to process the air pressure value and the user's skin image to generate an air pressure regulating instruction value.

[0065] The pressure-adjustable electric gas cylinder further includes a physiological parameter information acquisition module; the physiological parameter information acquisition module is connected to the pressure adjustment module and is used to acquire a set of physiological parameter information of the user; the set of physiological parameter information includes: a heart rate information sequence, a blood pressure information sequence, a blood oxygen saturation information sequence and a pulse information sequence;

[0066] The pressure regulating module is used to process the air pressure value and the user's skin image to generate an air pressure regulating instruction value, including:

[0067] Acquire a set of physiological parameter information;

[0068] Performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value;

[0069] Performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value;

[0070] The chromaticity evaluation value, the physiological evaluation value and the air pressure value are jointly evaluated and processed to obtain an air pressure adjustment command value; the air pressure adjustment command value is used to represent the adjustment value of the air pressure of the closed space inside the face shell of the electric gas tank;

[0071] The performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value includes:

[0072] Obtain a standard skin image;

[0073] Represent the user skin image and the skin standard image as four-dimensional matrices X and Y respectively;

[0074] Performing difference feature calculation processing on the four-dimensional matrices X and Y to obtain difference feature quantities;

[0075] The expression for the difference feature calculation process is:

[0076]

[0077] Wherein, |X·Y|4 represents the cross-correlation calculation of the row vectors of the 4th dimension of the four-dimensional matrices X and Y, ∑|X·Y|4 represents the accumulation of the cross-correlation calculation results of all the row vectors of the 4th dimension, ∑|XY| represents the accumulation of the absolute values ​​of the differences of the elements with the same subscript in the four-dimensional matrices X and Y, α1 and α2 are the preset first weighting factor and the second weighting factor, respectively, and their values ​​can be 0.04 and 0.05, I a is the difference feature quantity,

[0078] Using a preset chromaticity interval value set, the difference feature quantity is compared and processed to obtain chromaticity interval information to which the difference feature quantity belongs;

[0079] Determine the chromaticity evaluation value corresponding to the chromaticity interval information to which the difference feature quantity belongs, as the obtained chromaticity evaluation value;

[0080] The performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value includes:

[0081] Obtaining a standard physiological parameter information set; the standard physiological parameter information set includes a standard value of heart rate, a standard value of blood pressure, a standard value of blood oxygen saturation, and a standard value of pulse;

[0082] Subtract the standard value of the corresponding category from each information sequence in the physiological parameter information set to obtain a difference sequence of the corresponding category;

[0083] Using the difference sequences of all categories, a matrix A to be evaluated is constructed; the row vector of the matrix to be evaluated is a difference sequence of one category;

[0084] Performing feature fitting processing on the matrix to be evaluated to obtain the best consistent approximation polynomial;

[0085] Performing cross-covariance matrix calculation processing on the matrix to be evaluated to obtain a cross-covariance matrix;

[0086] The row number corresponding to the maximum value of all diagonal elements of the cross-covariance matrix is ​​input into the best consistent approximation polynomial to obtain the physiological evaluation value.

[0087] The step of jointly evaluating the chromaticity evaluation value, the physiological evaluation value and the air pressure value to obtain the air pressure adjustment instruction value includes:

[0088] Obtain the standard air pressure value;

[0089] Calculate the difference ΔP between the air pressure value P and the standard air pressure value P0;

[0090] Evaluate and calculate the chromaticity evaluation value, the physiological evaluation value and the difference ΔP to obtain an air pressure adjustment instruction value;

[0091] The expression of the evaluation calculation is:

[0092]

[0093] Among them, ε is the air pressure adjustment command value, μ is the chromaticity evaluation value, and ν is the physiological evaluation value.

[0094] The pressure regulating module may obtain the physiological parameter information set through the physiological parameter information acquisition module, or the physiological parameter information set of the user acquired by other devices may be sent to the pressure regulating module through wireless communication means.

[0095] In a second aspect of the embodiments of the present invention, a method for regulating the pressure of a gas tank is disclosed, which is implemented by using the pressure-adjustable electric gas tank, and comprises:

[0096] Using a pressure sensor, measure the air pressure value of the enclosed space inside the face shell of the electric gas tank;

[0097] Using the image acquisition module, an image of the user's skin inside the face shell during the cupping process is acquired;

[0098] Using the pressure adjustment module, the air pressure value and the user's skin image are processed to generate an air pressure adjustment instruction value;

[0099] According to the air pressure adjustment instruction value, the air pump is used to evacuate or inflate the enclosed space inside the face shell of the electric gas tank.

[0100] The processing of the air pressure value and the user's skin image to generate an air pressure adjustment instruction value includes:

[0101] Acquire a set of physiological parameter information;

[0102] Performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value;

[0103] Performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value;

[0104] The chromaticity evaluation value, physiological evaluation value and air pressure value are jointly evaluated and processed to obtain an air pressure adjustment command value; the air pressure adjustment command value is used to represent the adjustment value of the air pressure in the closed space inside the face shell of the electric gas tank.

[0105] The performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value includes:

[0106] Obtain a standard skin image;

[0107] Represent the user skin image and the skin standard image as four-dimensional matrices X and Y respectively;

[0108] Performing difference feature calculation processing on the four-dimensional matrices X and Y to obtain difference feature quantities;

[0109] Using a preset chromaticity interval value set, the difference feature quantity is compared and processed to obtain chromaticity interval information to which the difference feature quantity belongs;

[0110] Determine the chromaticity evaluation value corresponding to the chromaticity interval information to which the difference feature quantity belongs, as the obtained chromaticity evaluation value.

[0111] The expression for the difference feature calculation process is:

[0112]

[0113] Wherein, |X·Y|4 represents the cross-correlation calculation of the row vectors of the 4th dimension of the four-dimensional matrices X and Y, ∑|X·Y|4 represents the accumulation of the cross-correlation calculation results of all the row vectors of the 4th dimension, ∑|XY| represents the accumulation of the absolute values ​​of the differences of the elements with the same subscript in the four-dimensional matrices X and Y, α1 and α2 are the preset first weighting factor and the second weighting factor respectively, I a is the difference feature quantity.

[0114] The performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value includes:

[0115] Obtaining a standard physiological parameter information set; the standard physiological parameter information set includes a standard value of heart rate, a standard value of blood pressure, a standard value of blood oxygen saturation, and a standard value of pulse;

[0116] Subtract the standard value of the corresponding category from each information sequence in the physiological parameter information set to obtain a difference sequence of the corresponding category;

[0117] Using the difference sequences of all categories, a matrix A to be evaluated is constructed; the row vector of the matrix to be evaluated is a difference sequence of one category;

[0118] Performing feature fitting processing on the matrix to be evaluated to obtain the best consistent approximation polynomial;

[0119] Performing cross-covariance matrix calculation processing on the matrix to be evaluated to obtain a cross-covariance matrix;

[0120] The row number corresponding to the maximum value of all diagonal elements of the cross-covariance matrix is ​​input into the best consistent approximation polynomial to obtain the physiological evaluation value.

[0121] The step of jointly evaluating the chromaticity evaluation value, the physiological evaluation value and the air pressure value to obtain the air pressure adjustment instruction value includes:

[0122] Obtain the standard air pressure value;

[0123] Calculate the difference αP between the air pressure value P and the standard air pressure value P0;

[0124] The chromaticity evaluation value, the physiological evaluation value and the difference ΔP are evaluated and calculated to obtain the air pressure adjustment instruction value.

[0125] The expression of the evaluation calculation is:

[0126]

[0127] Among them, ε is the air pressure adjustment command value, μ is the chromaticity evaluation value, and ν is the physiological evaluation value.

[0128] The performing feature fitting processing on the matrix to be evaluated to obtain the best consistent approximation polynomial includes:

[0129] Decomposing the matrix to be evaluated to obtain a left decomposition matrix, a characteristic matrix and a right decomposition matrix;

[0130] The decomposition process is calculated as follows:

[0131] Y=UAV,

[0132] Among them, U is the left decomposition matrix, Y is the matrix to be evaluated, A is the feature matrix, V is the right decomposition matrix, U and V are both orthogonal matrices, and A is a diagonal matrix;

[0133] Extracting the diagonal elements of the feature matrix to obtain a feature vector;

[0134] Performing linear fitting processing on the elements and element sequence values ​​of the eigenvector to obtain the best consistent approximation polynomial;

[0135] The cross-covariance matrix calculation process uses the row vectors of the difference matrix as samples;

[0136] The decomposition process can be implemented by using a matrix singular value decomposition algorithm.

[0137] The linear fitting process uses the characteristic vector element serial number value Ix as a known independent variable and the characteristic vector element value as a known dependent variable, and constructs the curve to be approximated using the known independent variable and the known dependent variable, and uses the function approximation method to perform curve fitting on the curve to be approximated to obtain the best consistent approximation polynomial.

[0138] The feature vector is represented as I a , I a =[λ1,λ2,…,λ N1 ], N1 is the number of elements contained in the feature vector; the curve fitting of the curve to be approximated by the function approximation method can adopt the best consistent linear approximation method. The best consistent approximation polynomial f(Ix) is expressed as:

[0139] f(Ix)=α P1 (Ix) P1 +α P1-1 (Ix) P1-1 +…+α2(Ix) 2 +α1(Ix)+α0,

[0140] Where P1 is the order of the best consistent approximation polynomial f(Ix), α0, α1, α2, …, α P1 are the coefficients of the optimal consistent approximation polynomial f(Ix);

[0141] The subscript values ​​of the four dimensions of the four-dimensional matrices X and Y are respectively the pixel position encoding value, the R channel amplitude value, the G channel amplitude value and the B channel amplitude value of the image pixel point;

[0142] The pixel position encoding value is obtained by numerically encoding the position coordinates of each pixel point in the user's skin image;

[0143] The chromaticity interval value set includes a plurality of chromaticity interval information and corresponding chromaticity evaluation values;

[0144] The chromaticity interval information is [x1, x2], where x1 and x2 are the lower and upper bounds of the chromaticity interval respectively;

[0145] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A pressure-adjustable electric gas tank, characterized in that: include: Surface shell, base, air pump, image acquisition module, pressure sensor, pressure regulation module; The surface shell is arranged above the base, an air pump is arranged on the top of the surface shell, and an image acquisition module and a pressure sensor are arranged on the inner wall of the surface shell; The pressure sensor is used to measure the air pressure value of the closed space inside the face shell of the electric gas tank; The air pump is used to evacuate or inflate the enclosed space inside the face shell of the electric gas tank according to the air pressure adjustment instruction value; The image acquisition module is connected to the pressure adjustment module and is used to acquire the user's skin image inside the face shell during the cupping process; The pressure regulating module is connected to the image acquisition module, the pressure sensor and the air pump respectively, and is used to process the air pressure value and the user's skin image to generate an air pressure regulating instruction value.

2. The pressure-adjustable electric gas tank according to claim 1, characterized in that: The pressure-adjustable electric gas tank also includes a physiological parameter information acquisition module; The physiological parameter information acquisition module is connected to the pressure regulation module and is used to acquire a set of physiological parameter information of the user; The physiological parameter information set includes: a heart rate information sequence, a blood pressure information sequence, a blood oxygen saturation information sequence and a pulse information sequence.

3. The pressure-adjustable electric gas tank according to claim 2, characterized in that: The pressure regulating module is used to process the air pressure value and the user's skin image to generate an air pressure regulating instruction value, including: The pressure regulating module obtains a set of physiological parameter information; Performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value; Performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value; The chromaticity evaluation value, physiological evaluation value and air pressure value are jointly evaluated and processed to obtain an air pressure adjustment command value; the air pressure adjustment command value is used to represent the adjustment value of the air pressure in the closed space inside the face shell of the electric gas tank.

4. A method for regulating gas tank pressure, characterized in that: The method is realized by using the pressure-adjustable electric gas cylinder according to any one of claims 1 to 3, comprising: Using a pressure sensor, measure the air pressure value of the enclosed space inside the face shell of the electric gas tank; Using the image acquisition module, an image of the user's skin inside the face shell during the cupping process is acquired; Using the pressure adjustment module, the air pressure value and the user's skin image are processed to generate an air pressure adjustment instruction value; According to the air pressure adjustment instruction value, the air pump is used to evacuate or inflate the enclosed space inside the face shell of the electric gas tank.

5. The method for regulating the gas tank pressure according to claim 4, characterized in that: The processing of the air pressure value and the user's skin image to generate an air pressure adjustment instruction value includes: Obtaining a set of physiological parameter information; Performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value; Performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value; The chromaticity evaluation value, physiological evaluation value and air pressure value are jointly evaluated and processed to obtain an air pressure adjustment command value; the air pressure adjustment command value is used to represent the adjustment value of the air pressure in the closed space inside the face shell of the electric gas tank.

6. The method for regulating the gas tank pressure according to claim 5, characterized in that: The performing color evaluation processing on the user's skin image to obtain a chromaticity evaluation value includes: Obtain a standard skin image; Represent the user skin image and the skin standard image as four-dimensional matrices X and Y respectively; Performing difference feature calculation processing on the four-dimensional matrices X and Y to obtain difference feature quantities; Using a preset chromaticity interval value set, the difference feature quantity is compared and processed to obtain chromaticity interval information to which the difference feature quantity belongs; Determine the chromaticity evaluation value corresponding to the chromaticity interval information to which the difference feature quantity belongs, as the obtained chromaticity evaluation value.

7. The method for regulating the pressure of a gas tank according to claim 6, characterized in that: The expression for the difference feature calculation process is: Wherein, |X·Y4 represents the cross-correlation calculation of the row vectors of the 4th dimension of the four-dimensional matrices X and Y, ∑X·Y4 represents the accumulation of the cross-correlation calculation results of all the row vectors of the 4th dimension, ∑XY represents the accumulation of the absolute values ​​of the differences of the elements with the same subscript in the four-dimensional matrices X and Y, α1 and α2 are the preset first weighting factor and the second weighting factor respectively, I a is the difference feature quantity.

8. The method for regulating the pressure of a gas tank according to claim 5, characterized in that: The performing physiological evaluation processing on the physiological parameter information set to obtain a physiological evaluation value includes: Obtaining a standard physiological parameter information set; the standard physiological parameter information set includes a standard value of heart rate, a standard value of blood pressure, a standard value of blood oxygen saturation, and a standard value of pulse; Subtract the standard value of the corresponding category from each information sequence in the physiological parameter information set to obtain a difference sequence of the corresponding category; Using the difference sequences of all categories, a matrix A to be evaluated is constructed; the row vector of the matrix to be evaluated is a difference sequence of one category; Performing feature fitting processing on the matrix to be evaluated to obtain the best consistent approximation polynomial; Performing cross-covariance matrix calculation processing on the matrix to be evaluated to obtain a cross-covariance matrix; The row number corresponding to the maximum value of all diagonal elements of the cross-covariance matrix is ​​input into the best consistent approximation polynomial to obtain the physiological evaluation value.

9. The method for regulating the pressure of a gas tank according to claim 5, characterized in that: The step of jointly evaluating the chromaticity evaluation value, the physiological evaluation value and the air pressure value to obtain the air pressure adjustment instruction value includes: Obtain the standard air pressure value; Calculate the difference ΔP between the air pressure value P and the standard air pressure value P0; The chromaticity evaluation value, the physiological evaluation value and the difference ΔP are evaluated and calculated to obtain the air pressure adjustment instruction value.

10. The method for regulating the pressure of a gas tank according to claim 9, characterized in that: The expression of the evaluation calculation is: Among them, ε is the air pressure adjustment command value, μ is the chromaticity evaluation value, and ν is the physiological evaluation value.

Images