Liquid non-contact detection method, device, electronic equipment and storage medium

Abstract

The present application belongs to the technical field of liquid detection, and discloses a non-contact liquid detection method, device, electronic device and storage medium. The method comprises: obtaining three-dimensional data of a storage container of a liquid to be detected, establishing a height-volume relationship matching model of the storage container based on the three-dimensional data, using the Antoine equation, Darcy's law and Raoult's law, and calculating the density of the liquid to be detected according to the liquid level height of the liquid to be detected after a preset time and the physical parameters of the liquid to be detected, inputting the liquid level height of the liquid to be detected after the preset time into the height-volume relationship matching model to obtain the volume of the liquid to be detected, and then calculating the mass of the liquid to be detected according to the volume and density; through the height-volume relationship matching model, using the Antoine equation, Darcy's law and Raoult's law, and calculating the volume, density and mass according to the liquid level height of the liquid after the preset time, so as to perform non-contact detection on the liquid, thereby improving the detection efficiency of the liquid.

Description

Technical Field

[0001] The present application relates to the technical field of liquid detection, and in particular to a liquid non-contact detection method, device, electronic device and storage medium. Background Art

[0002] In recent years, new sensing devices such as depth cameras, 3D scanners, and height sensors have been widely used in liquid detection, especially in non-contact detection. However, single-modality detection methods and data have limited detection accuracy and cannot fully evaluate liquid properties (such as volume, density, and quality), and it is often difficult to simultaneously meet the needs of high-precision, comprehensive, and non-contact detection.

[0003] Therefore, in order to solve the technical problem that the existing non-contact liquid detection method cannot comprehensively evaluate the volume, density and quality of the liquid, a non-contact liquid detection method, device, electronic device and storage medium are urgently needed. Summary of the invention

[0004] The purpose of the present application is to provide a non-contact liquid detection method, device, electronic device and storage medium. Through a height-volume relationship matching model, the Antoine equation, Darcy's law and Raoult's law are used to calculate the volume, density and mass of the liquid to be tested according to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, thereby solving the problem that the existing non-contact liquid detection method cannot comprehensively evaluate the volume, density and mass of the liquid. The method is suitable for liquid storage containers of various shapes and materials, and can detect the liquid through the height change of the liquid within a certain period of time without contacting the liquid, thereby improving the detection efficiency of the liquid.

[0005] In a first aspect, the present application provides a liquid non-contact detection method for performing non-contact detection on a liquid, comprising:

[0006] Acquire three-dimensional data of a storage container of the liquid to be tested;

[0007] Based on the three-dimensional data, establishing a height-volume relationship matching model of the storage container;

[0008] Using the Antoine equation, Darcy's law and Raoult's law, the density of the liquid to be tested is calculated according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested;

[0009] After the liquid level height of the liquid to be tested after a preset time is input into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, the mass of the liquid to be tested after the preset time is calculated based on the volume and the density.

[0010] The non-contact liquid detection method provided in the present application can realize non-contact detection of liquids. Through the height-volume relationship matching model, the Antoine equation, Darcy's law and Raoult's law are used to calculate the volume, density and mass of the liquid to be tested according to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, thereby solving the problem that the existing non-contact liquid detection method cannot comprehensively evaluate the volume, density and mass of the liquid. The method is suitable for liquid storage containers of various shapes and materials, and can detect the liquid through the height change of the liquid within a certain period of time without contacting the liquid, thereby improving the detection efficiency of the liquid.

[0011] Optionally, the density of the liquid to be tested is calculated by using the Antoine equation, Darcy's law and Raoult's law according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, including:

[0012] According to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, a mole fraction equation is constructed in combination with the Antoine equation, Darcy's law and Raoult's law;

[0013] Inputting the preset time into the mole fraction equation to obtain the mole fraction of the liquid to be tested;

[0014] The mole fraction is input into a preset liquid density calculation formula to calculate the density of the liquid to be tested.

[0015] The liquid non-contact detection method provided in the present application can realize non-contact detection of liquids. The mole fraction of the liquid to be tested is calculated by inputting a preset time into a mole fraction equation constructed according to the liquid level of the liquid to be tested after the preset time, the physical parameters of the liquid to be tested, the Antoine equation, Darcy's law and Raoult's law. The mole fraction is then input into a preset liquid density calculation formula to calculate the density of the liquid to be tested, thereby improving the efficiency of non-contact detection of liquids.

[0016] Optionally, according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, in combination with the Antoine equation, Darcy's law and Raoult's law, a mole fraction equation is constructed, including:

[0017] Establishing an ideal gas state equation according to the physical properties of the liquid to be tested;

[0018] Based on the Antoine equation, the Darcy's law and the Raoult's law, the ideal gas state equation is adjusted to obtain a preliminary mole fraction equation;

[0019] According to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, the specific value of the volume parameter in the preliminary mole fraction equation is determined to obtain the mole fraction equation.

[0020] Optionally, based on the Antoine equation, the Darcy's law and the Raoult's law, the ideal gas state equation is adjusted to obtain a preliminary mole fraction equation, including:

[0021] Based on the Antoine equation, Darcy's law and Raoult's law, a mole fraction relationship formula, a volatile volume calculation formula and a vapor pressure calculation formula are constructed;

[0022] The ideal gas state equation is adjusted using the mole fraction relationship formula, the volatile volume calculation formula and the vapor pressure calculation formula to obtain a preliminary mole fraction equation.

[0023] Optionally, according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, the specific value of the volume parameter in the preliminary mole fraction equation is determined to obtain the mole fraction equation, including:

[0024] Acquiring the physical parameters of the liquid to be tested and the liquid height of the liquid to be tested after a preset time;

[0025] Inputting the liquid height after the preset time and the physical parameter into the preliminary mole fraction equation to determine a specific value of the volume parameter in the preliminary mole fraction equation;

[0026] The specific value of the volume parameter is input into the preliminary mole fraction equation to obtain a mole fraction equation.

[0027] Optionally, the preset liquid density calculation formula includes a preset first liquid density calculation formula and a preset second liquid density calculation formula; inputting the mole fraction into the preset liquid density calculation formula to calculate the density of the liquid to be measured includes:

[0028] Inputting the mole fraction into the preset first liquid density calculation formula to calculate the solute volume fraction in the liquid to be tested;

[0029] The solute volume fraction is input into the preset second liquid density calculation formula to calculate the density of the liquid to be measured.

[0030] Optionally, after inputting the liquid level height of the liquid to be tested after a preset time into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, the mass of the liquid to be tested after the preset time is calculated according to the volume and the density, including:

[0031] Inputting the liquid level height of the liquid to be tested after a preset time into the height-volume relationship matching model to calculate the volume of the liquid to be tested after the preset time;

[0032] Based on the product of the volume and the density, the mass of the liquid to be tested after a preset time is calculated.

[0033] The liquid non-contact detection method provided in the present application can realize non-contact detection of liquid. The volume of the liquid to be tested after the preset time is calculated by inputting the liquid level height of the liquid to be tested after a preset time into a height-volume relationship matching model, and the mass of the liquid to be tested after the preset time is calculated based on the product of the volume and the density, thereby improving the non-contact detection efficiency of the liquid.

[0034] In a second aspect, the present application provides a liquid non-contact detection device for performing non-contact detection on liquid, comprising:

[0035] An acquisition module, used for acquiring three-dimensional data of a storage container of the liquid to be tested;

[0036] An establishing module, used for establishing a height-volume relationship matching model of the storage container based on the three-dimensional data;

[0037] A first calculation module is used to calculate the density of the liquid to be tested according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested by using the Antoine equation, Darcy's law and Raoult's law;

[0038] The second calculation module is used to input the liquid level height of the liquid to be tested after a preset time into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, and then calculate the mass of the liquid to be tested after the preset time based on the volume and the density.

[0039] The non-contact liquid detection device calculates the volume, density and mass of the liquid to be tested based on the liquid level after a preset time and the physical parameters of the liquid to be tested, through a height-volume relationship matching model, the Antoine equation, Darcy's law and Raoult's law, thereby solving the problem that the existing non-contact liquid detection method cannot comprehensively evaluate the volume, density and mass of the liquid. The device is suitable for liquid storage containers of various shapes and materials, and can detect the liquid through the height change of the liquid within a certain period of time without contacting the liquid, thereby improving the detection efficiency of the liquid.

[0040] In a third aspect, the present application provides an electronic device, comprising a processor and a memory, wherein the memory stores a computer program executable by the processor, and when the processor executes the computer program, it runs the steps in the liquid non-contact detection method described above.

[0041] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps in the liquid non-contact detection method described above are performed.

[0042] Beneficial effects: The non-contact liquid detection method, device, electronic device and storage medium provided in the present application, through a height-volume relationship matching model, uses the Antoine equation, Darcy's law and Raoult's law to calculate the volume, density and mass of the liquid to be tested according to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, thereby solving the problem that the existing non-contact liquid detection method cannot comprehensively evaluate the volume, density and mass of the liquid. It is suitable for liquid storage containers of various shapes and materials, and can detect the liquid through the height change of the liquid within a certain period of time without contacting the liquid, thereby improving the detection efficiency of the liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 A flow chart of a non-contact liquid detection method provided in an embodiment of the present application.

[0044] Figure 2 A schematic diagram of the structure of a liquid non-contact detection device provided in an embodiment of the present application.

[0045] Figure 3 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0046] Explanation of reference numerals: 1. Acquisition module; 2. Establishment module; 3. First calculation module; 4. Second calculation module; 301. Processor; 302. Memory; 303. Communication bus. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0048] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0049] Please refer to Figure 1 , Figure 1 A non-contact liquid detection method in some embodiments of the present application is used for non-contact detection of liquid, comprising the steps of:

[0050] Step S101, obtaining three-dimensional data of a storage container of the liquid to be tested;

[0051] Step S102, establishing a height-volume relationship matching model of the storage container based on the three-dimensional data;

[0052] Step S103, using the Antoine equation, Darcy's law and Raoult's law, the density of the liquid to be tested is calculated according to the liquid level after a preset time and the physical parameters of the liquid to be tested;

[0053] Step S104, after inputting the liquid level height of the liquid to be tested after the preset time into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, the mass of the liquid to be tested after the preset time is calculated based on the volume and density.

[0054] The non-contact liquid detection method uses a height-volume relationship matching model, the Antoine equation, Darcy's law and Raoult's law to calculate the volume, density and mass of the liquid to be tested according to the liquid level after a preset time and the physical parameters of the liquid to be tested, thereby solving the problem that the existing non-contact liquid detection method cannot comprehensively evaluate the volume, density and mass of the liquid. The method is suitable for liquid storage containers of various shapes and materials, and can detect the liquid through the height change of the liquid within a certain period of time without contacting the liquid, thereby improving the detection efficiency of the liquid.

[0055] Specifically, in step S101, three-dimensional data of a storage container for the liquid to be tested is obtained by using equipment such as a three-dimensional scanner and a depth camera, wherein the three-dimensional data includes data such as the structure and size of the storage container, such as the structure such as the inner surface shape of the storage container, and the height and the length and width corresponding to different heights. When the storage container is a container with a regular inner surface shape (a regular container is a container with an inner surface shape such as a cylinder or a rectangle), the corresponding size of the storage container can be obtained according to the volume calculation formula of the corresponding regular container, so as to better determine the relationship between the first height and the volume of the storage container. When the storage container is a container with an irregular inner surface shape (an irregular container is a container composed of multiple inner surface shapes such as a cylinder or a rectangle, or a container with other irregular inner surface shapes), the irregular storage container can be divided into multiple parts (such as dividing a relatively regular position into one part) according to actual needs, and the shape and size of each part are obtained when obtaining the three-dimensional data to form the three-dimensional data of the storage container.

[0056] Specifically, in step S102, a height-volume relationship matching model of the storage container is established based on the three-dimensional data. The height-volume relationship matching model is used to represent the relationship between the height and volume of the storage container. The height-volume relationship matching model is provided with an intelligent algorithm, and the volume of the liquid in the storage container can be calculated by inputting the height of the liquid in the storage container.

[0057] For example, when the inner surface shape of the storage container is a regular shape, the corresponding size of the storage container can be obtained according to the volume calculation formula of the corresponding regular shape container, so as to establish a functional relationship between the height position and the volume in the height-volume relationship matching model, so that the height-volume relationship matching model can determine the volume of the liquid according to the input liquid height; or, when the inner surface shape of the storage container is multiple shapes, the sizes of different parts can be obtained, and then the corresponding volumes of the storage container at each height position can be determined according to the sizes of different parts, so as to establish a functional relationship between the height position and the volume of multiple parts in the height-volume relationship matching model, so that the height-volume relationship matching model can determine the volume of the liquid according to the input liquid height.

[0058] Alternatively, the three-dimensional data of the storage container is used to construct a corresponding container model in the simulation software or modeling software using the finite element analysis method to simulate the storage container, and the functional relationship between the height position and the volume of the container model is determined by the equivalent substitution method or the calculation method provided in the software (simulation software or modeling software), so as to construct a height-volume relationship matching model, so that the height-volume relationship matching model can determine the volume of the liquid according to the input liquid height.

[0059] Specifically, in step S103, the density of the liquid to be tested is calculated based on the liquid level after a preset time and the physical parameters of the liquid to be tested by using the Antoine equation, Darcy's law and Raoult's law, including:

[0060] According to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, the mole fraction equation is constructed by combining the Antoine equation, Darcy's law and Raoult's law;

[0061] Input the preset time into the mole fraction equation to obtain the mole fraction of the liquid to be tested;

[0062] Input the mole fraction into the preset liquid density calculation formula to calculate the density of the liquid to be tested.

[0063] Specifically, in step S103, according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, combined with the Antoine equation, Darcy's law and Raoult's law, a mole fraction equation is constructed, including:

[0064] According to the physical properties of the liquid to be tested, the ideal gas state equation is established;

[0065] Based on the Antoine equation, Darcy's law and Raoult's law, the ideal gas state equation is adjusted to obtain a preliminary mole fraction equation;

[0066] According to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, the specific value of the volume parameter in the preliminary mole fraction equation is determined to obtain the mole fraction equation.

[0067] In step S103, an ideal gas state equation is established according to the physical properties of the liquid to be tested, such as volatility and the gaseous properties of the liquid evaporating into a gaseous state. The ideal gas state equation is specifically:

[0068] ;

[0069] Where R is the ideal gas constant, which is approximately 8.3 J / (mol·K); T is the temperature (unit K); The amount of gas formed by the volatile components in the liquid to be tested at time t after volatilization; is the vapor pressure of the gas (the gas formed after the volatile components in the liquid to be tested evaporate) in the initial state (initial moment, i.e. before the preset time); is the gas volume at time t (i.e., preset time) (the gas volume at time t can be calculated by the difference between the volume of the storage container calculated by inputting the height of the storage container into the height-volume relationship matching model and the volume of the liquid to be tested after the preset time calculated by inputting the liquid level after the preset time into the height-volume relationship matching model); is the volume of the gas in the initial state (the volume of the gas in the initial state can be calculated by the difference between the volume of the storage container calculated by inputting the height of the storage container into the height-volume relationship matching model and the volume of the liquid to be tested before the preset time calculated by inputting the liquid level before the preset time into the height-volume relationship matching model); is the gas vapor pressure at time t; t is time, that is, time t.

[0070] In step S103, based on the Antoine equation, Darcy's law and Raoult's law, the ideal gas state equation is adjusted to obtain a preliminary mole fraction equation, including:

[0071] Based on the Antoine equation, Darcy's law and Raoult's law, the formulas for the relationship between mole fractions, the calculation formulas for volatile volume and vapor pressure were constructed;

[0072] The ideal gas state equation was adjusted using the mole fraction relationship formula, the volatile volume calculation formula, and the vapor pressure calculation formula to obtain a preliminary mole fraction equation.

[0073] In step S103, a mole fraction relationship formula is determined according to the mole fraction of the gas formed after the volatile component in the liquid to be tested is volatilized and the mole fraction of the liquid that has not yet volatilized in the liquid to be tested. The mole fraction relationship formula is specifically:

[0074] ;

[0075] in, is the mole fraction of gas at time t; is the mole fraction of the liquid to be tested at time t; is the relative volatility of the volatile component in the gas and the non-volatile component in the liquid. Assuming that the volatile component in the liquid to be tested is solute A (then the gas is recorded as A gas), and assuming that the non-volatile component in the liquid to be tested is solvent B, then is the relative volatility of solute A and solvent B, where , is the saturated vapor pressure of solute A, is the saturated vapor pressure of solvent B.

[0076] According to the Antoine equation, the saturated vapor pressure of different substances (components) is determined by a series of constants and temperature. The Antoine constant values ​​of different substances can be obtained by querying, and the saturated vapor pressure of each component can be calculated by obtaining the internal temperature of the storage container.

[0077] According to the formula for calculating the amount of substance, adjust the ideal gas state equation. ,in, is the gas molar volume, which is 2.38×10 at 20°C. -2 m 3 / mol, and , is the mole fraction of the liquid to be tested at the initial moment, is the mole fraction of the gas at the initial moment.

[0078] According to Darcy's law, the volatile volume calculation formula is constructed. The specific volatile volume calculation formula is:

[0079] ;

[0080] Where k is the permeability of gas in solid material; μ is the gas viscosity, which is generally taken as 10 -5 Pa·s; a is the container thickness; is the vapor pressure of the gas The change value of , is the pressure of the external air (generally 1 standard atmospheric pressure, i.e. 101 kPa); is the contact surface area of ​​the gas in the storage container that penetrates to the outside at time t (i.e., the contact area with the storage container, including the top area of ​​the storage container and the side area from the top of the storage container to the liquid level), , H is the height of the storage container, h is the liquid level height of the liquid to be tested after a preset time, is the capacity of the storage container (i.e. the internal volume).

[0081] Using the volatile volume calculation formula, the ideal gas state equation is adjusted to pass Replace the right side of the ideal gas state equation .

[0082] According to Raoult's law, the vapor pressure calculation formula is constructed. The vapor pressure calculation formula is as follows:

[0083] ;

[0084] Among them, when time t is 0, .

[0085] The ideal gas state equation is adjusted using the mole fraction relationship formula, the volatile volume calculation formula and the vapor pressure calculation formula, that is, the mole fraction relationship formula, the volatile volume calculation formula and the vapor pressure calculation formula are used to replace the corresponding parameters in the ideal gas state equation to obtain a preliminary mole fraction equation. The preliminary mole fraction equation is specifically:

[0086] ;

[0087] Adjusting the preliminary mole fraction equation yields

[0088] ;

[0089] use replace ,get

[0090] ;

[0091] in, is the volume parameter.

[0092] In summary, the preliminary mole fraction equation is adjusted to . And for , by obtaining Initial value of And the corresponding time t can be calculated.

[0093] In step S103, it is only necessary to obtain the liquid level h of the liquid to be tested after a preset time (the liquid level h of the liquid to be tested after a preset time can be measured by a height sensor or a distance sensor, etc.) and the physical parameters of the liquid to be tested (the physical parameters include the mole fraction of the liquid to be tested at the initial moment, the volume of the gas, the molar volume and mole fraction of the gas, the permeability of the gas in the solid material, and the saturated vapor pressure of each component in the liquid to be tested, etc.), and the volume parameter can be calculated. The specific value of The specific value of is substituted into the adjusted preliminary mole fraction equation to obtain the mole fraction equation. Among them, the preset time can be set according to actual needs.

[0094] Specifically, in step S103, the preset time t is input into the mole fraction equation , calculate the mole fraction of the liquid to be tested .

[0095] Specifically, the preset liquid density calculation formula includes a preset first liquid density calculation formula and a preset second liquid density calculation formula; in step S103, the mole fraction is input into the preset liquid density calculation formula to calculate the density of the liquid to be measured, including:

[0096] Input the mole fraction into a preset first liquid density calculation formula to calculate the solute volume fraction in the liquid to be tested;

[0097] The solute volume fraction is input into a preset second liquid density calculation formula to calculate the density of the liquid to be measured.

[0098] In step S103, the mole fraction is input into a preset first liquid density calculation formula to calculate the solute volume fraction in the liquid to be tested, wherein the preset first liquid density calculation formula is specifically:

[0099] ;

[0100] in, is the solute volume fraction (i.e. the volume fraction of solute A (solute A is the volatile component in the solution to be tested) in the liquid state in the solution to be tested); is the density of solute A in liquid state; is the density of solvent B (solvent B is the non-volatile component in the solution to be tested); is the reciprocal of the relative molecular mass of solute A; It is the reciprocal of the relative molecular mass of solvent B.

[0101] The solute volume fraction is input into the preset second liquid density calculation formula to calculate the density of the liquid to be tested, wherein the preset second liquid density calculation formula is specifically:

[0102] ;

[0103] in, is the density of the liquid to be measured.

[0104] Specifically, in step S104, after the liquid level height of the liquid to be tested after the preset time is input into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, the mass of the liquid to be tested after the preset time is calculated according to the volume and density, including:

[0105] The liquid level height of the liquid to be tested after the preset time is input into the height-volume relationship matching model to calculate the volume of the liquid to be tested after the preset time;

[0106] Based on the product of volume and density, the mass of the liquid to be tested after a preset time is calculated.

[0107] In step S104, the liquid level height of the liquid to be tested after the preset time is input into the height-volume relationship matching model, the volume of the liquid to be tested after the preset time is calculated, and then the product of the volume and density of the liquid to be tested after the preset time is calculated to obtain the mass of the liquid to be tested after the preset time.

[0108] As can be seen from the above, the non-contact liquid detection method obtains the three-dimensional data of the storage container of the liquid to be tested, establishes a height-volume relationship matching model of the storage container based on the three-dimensional data, uses the Antoine equation, Darcy's law and Raoult's law, and calculates the density of the liquid to be tested according to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested. After the liquid level height of the liquid to be tested after the preset time is input into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, the mass of the liquid to be tested after the preset time is calculated according to the volume and density; thus, through the height-volume relationship matching model, the Antoine equation, Darcy's law and Raoult's law are used to calculate the volume, density and mass of the liquid to be tested according to the liquid level height of the liquid to be tested after the preset time and the physical parameters of the liquid to be tested, thereby solving the problem that the existing non-contact liquid detection method cannot comprehensively evaluate the volume, density and mass of the liquid, and is suitable for liquid storage containers of various shapes and materials, and can detect the liquid by the height change of the liquid within a certain period of time without contacting the liquid, thereby improving the detection efficiency of the liquid.

[0109] refer to Figure 2 The present application provides a liquid non-contact detection device for performing non-contact detection on liquid, comprising:

[0110] An acquisition module 1 is used to acquire three-dimensional data of a storage container of the liquid to be tested;

[0111] Establishing module 2, for establishing a height-volume relationship matching model of the storage container based on the three-dimensional data;

[0112] The first calculation module 3 is used to calculate the density of the liquid to be tested according to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested by using the Antoine equation, Darcy's law and Raoult's law;

[0113] The second calculation module 4 is used to input the liquid level height of the liquid to be tested after the preset time into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, and then calculate the mass of the liquid to be tested after the preset time based on the volume and density.

[0114] The non-contact liquid detection device calculates the volume, density and mass of the liquid to be tested based on the liquid level after a preset time and the physical parameters of the liquid to be tested, through a height-volume relationship matching model, the Antoine equation, Darcy's law and Raoult's law, thereby solving the problem that the existing non-contact liquid detection method cannot comprehensively evaluate the volume, density and mass of the liquid. The device is suitable for liquid storage containers of various shapes and materials, and can detect the liquid through the height change of the liquid within a certain period of time without contacting the liquid, thereby improving the detection efficiency of the liquid.

[0115] Specifically, when the acquisition module 1 is executed, the three-dimensional data of the storage container of the liquid to be tested is acquired through devices such as a three-dimensional scanner and a depth camera, wherein the three-dimensional data includes data such as the structure and size of the storage container, such as the structure such as the inner surface shape of the storage container, and the height and the length and width corresponding to different heights. When the storage container is a container with a regular inner surface shape (a regular shape container is a container with an inner surface shape such as a cylinder or a rectangle), the corresponding size of the storage container can be obtained according to the volume calculation formula of the corresponding regular shape container, so as to better determine the relationship between the first height and the volume of the storage container; when the storage container is a container with an irregular inner surface shape (an irregular shape container is a container composed of multiple inner surface shapes such as a cylinder or a rectangle, or a container with an inner surface shape of other irregular shapes), the irregular shape storage container can be divided into multiple parts (such as dividing a relatively regular position into one part) according to actual needs, and the shape and size of each part are obtained when acquiring the three-dimensional data to form the three-dimensional data of the storage container.

[0116] Specifically, when module 2 is executed, a height-volume relationship matching model of the storage container is established based on the three-dimensional data. The height-volume relationship matching model is used to represent the relationship between the height and volume of the storage container. The height-volume relationship matching model is provided with an intelligent algorithm, and the volume of the liquid in the storage container can be calculated by inputting the height of the liquid in the storage container.

[0117] For example, when the inner surface shape of the storage container is a regular shape, the corresponding size of the storage container can be obtained according to the volume calculation formula of the corresponding regular shape container, so as to establish a functional relationship between the height position and the volume in the height-volume relationship matching model, so that the height-volume relationship matching model can determine the volume of the liquid according to the input liquid height; or, when the inner surface shape of the storage container is multiple shapes, the sizes of different parts can be obtained, and then the corresponding volumes of the storage container at each height position can be determined according to the sizes of different parts, so as to establish a functional relationship between the height position and the volume of multiple parts in the height-volume relationship matching model, so that the height-volume relationship matching model can determine the volume of the liquid according to the input liquid height.

[0118] Alternatively, the three-dimensional data of the storage container is used to construct a corresponding container model in the simulation software or modeling software using the finite element analysis method to simulate the storage container, and the functional relationship between the height position and the volume of the container model is determined by the equivalent substitution method or the calculation method provided in the software (simulation software or modeling software), so as to construct a height-volume relationship matching model, so that the height-volume relationship matching model can determine the volume of the liquid according to the input liquid height.

[0119] Specifically, when the first calculation module 3 uses the Antoine equation, Darcy's law and Raoult's law to calculate the density of the liquid to be tested according to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, it executes:

[0120] According to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, the mole fraction equation is constructed by combining the Antoine equation, Darcy's law and Raoult's law;

[0121] Input the preset time into the mole fraction equation to obtain the mole fraction of the liquid to be tested;

[0122] Input the mole fraction into the preset liquid density calculation formula to calculate the density of the liquid to be tested.

[0123] Specifically, when the first calculation module 3 constructs the mole fraction equation according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, combined with the Antoine equation, Darcy's law and Raoult's law, the following is executed:

[0124] According to the physical properties of the liquid to be tested, the ideal gas state equation is established;

[0125] Based on the Antoine equation, Darcy's law and Raoult's law, the ideal gas state equation is adjusted to obtain a preliminary mole fraction equation;

[0126] According to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, the specific value of the volume parameter in the preliminary mole fraction equation is determined to obtain the mole fraction equation.

[0127] When the first calculation module 3 is executed, an ideal gas state equation is established according to the physical properties of the liquid to be measured, such as volatility and the gaseous properties of the liquid evaporating into a gaseous state. The ideal gas state equation is specifically:

[0128] ;

[0129] Where R is the ideal gas constant, which is approximately 8.3 J / (mol·K); T is the temperature (unit K); The amount of gas formed by the volatile components in the liquid to be tested at time t after volatilization; is the vapor pressure of the gas (the gas formed after the volatile components in the liquid to be tested evaporate) in the initial state (initial moment, i.e. before the preset time); is the gas volume at time t (i.e., preset time) (the gas volume at time t can be calculated by the difference between the volume of the storage container calculated by inputting the height of the storage container into the height-volume relationship matching model and the volume of the liquid to be tested after the preset time calculated by inputting the liquid level after the preset time into the height-volume relationship matching model); is the volume of the gas in the initial state (the volume of the gas in the initial state can be calculated by the difference between the volume of the storage container calculated by inputting the height of the storage container into the height-volume relationship matching model and the volume of the liquid to be tested before the preset time calculated by inputting the liquid level before the preset time into the height-volume relationship matching model); is the gas vapor pressure at time t; t is time, that is, time t.

[0130] When the first calculation module 3 adjusts the ideal gas state equation based on the Antoine equation, Darcy's law and Raoult's law to obtain the preliminary mole fraction equation, the following is executed:

[0131] Based on the Antoine equation, Darcy's law and Raoult's law, the formulas for the relationship between mole fractions, the calculation formulas for volatile volume and vapor pressure were constructed;

[0132] The ideal gas state equation was adjusted using the mole fraction relationship formula, the volatile volume calculation formula, and the vapor pressure calculation formula to obtain a preliminary mole fraction equation.

[0133] When the first calculation module 3 is executed, the mole fraction relationship formula is determined according to the mole fraction of the gas formed after the volatile component in the liquid to be tested is volatilized and the mole fraction of the liquid that has not yet volatilized in the liquid to be tested. The mole fraction relationship formula is specifically:

[0134] ;

[0135] in, is the mole fraction of gas at time t; is the mole fraction of the liquid to be tested at time t; is the relative volatility of the volatile component in the gas and the non-volatile component in the liquid. Assuming that the volatile component in the liquid to be tested is solute A (then the gas is recorded as A gas), and assuming that the non-volatile component in the liquid to be tested is solvent B, then is the relative volatility of solute A and solvent B, where , is the saturated vapor pressure of solute A, is the saturated vapor pressure of solvent B.

[0136] According to the Antoine equation, the saturated vapor pressure of different substances (components) is determined by a series of constants and temperature. The Antoine constant values ​​of different substances can be obtained by querying, and the saturated vapor pressure of each component can be calculated by obtaining the internal temperature of the storage container.

[0137] According to the formula for calculating the amount of substance, adjust the ideal gas state equation. ,in, is the gas molar volume, which is 2.38×10 at 20°C. -2 m 3 / mol, and , is the mole fraction of the liquid to be tested at the initial moment, is the mole fraction of the gas at the initial moment.

[0138] According to Darcy's law, the volatile volume calculation formula is constructed. The specific volatile volume calculation formula is:

[0139] ;

[0140] Where k is the permeability of gas in solid material; μ is the gas viscosity, which is generally taken as 10 -5 Pa·s; a is the container thickness; is the vapor pressure of the gas The change value of , is the pressure of the external air (generally 1 standard atmospheric pressure, i.e. 101 kPa); is the contact surface area of ​​the gas in the storage container that penetrates to the outside at time t (i.e., the contact area with the storage container, including the top area of ​​the storage container and the side area from the top of the storage container to the liquid level), , H is the height of the storage container, h is the liquid level height of the liquid to be tested after a preset time, is the capacity of the storage container (i.e. the internal volume).

[0141] Using the volatile volume calculation formula, the ideal gas state equation is adjusted to pass Replace the right side of the ideal gas state equation .

[0142] According to Raoult's law, the vapor pressure calculation formula is constructed. The vapor pressure calculation formula is as follows:

[0143] ;

[0144] Among them, when time t is 0, .

[0145] The ideal gas state equation is adjusted using the mole fraction relationship formula, the volatile volume calculation formula and the vapor pressure calculation formula, that is, the mole fraction relationship formula, the volatile volume calculation formula and the vapor pressure calculation formula are used to replace the corresponding parameters in the ideal gas state equation to obtain a preliminary mole fraction equation. The preliminary mole fraction equation is specifically:

[0146] ;

[0147] Adjusting the preliminary mole fraction equation yields

[0148] ;

[0149] use replace ,get ;

[0150] in, is the volume parameter.

[0151] In summary, the preliminary mole fraction equation is adjusted to . And for , by obtaining Initial value of And the corresponding time t can be calculated.

[0152] When the first calculation module 3 is executed, it only needs to obtain the liquid level h of the liquid to be tested after a preset time (the liquid level h of the liquid to be tested after a preset time can be measured by a height sensor or a distance sensor, etc.) and the physical parameters of the liquid to be tested (the physical parameters include the mole fraction of the liquid to be tested at the initial moment, the volume of the gas, the molar volume and mole fraction of the gas, the permeability of the gas in the solid material, and the saturated vapor pressure of each component in the liquid to be tested, etc.), and the volume parameter can be calculated. The specific value of The specific value of is substituted into the adjusted preliminary mole fraction equation to obtain the mole fraction equation. Among them, the preset time can be set according to actual needs.

[0153] Specifically, when the first calculation module 3 is executed, the preset time t is input into the mole fraction equation , calculate the mole fraction of the liquid to be tested .

[0154] Specifically, the preset liquid density calculation formula includes a preset first liquid density calculation formula and a preset second liquid density calculation formula; when the first calculation module 3 inputs the mole fraction into the preset liquid density calculation formula and calculates the density of the liquid to be measured, it executes:

[0155] Input the mole fraction into a preset first liquid density calculation formula to calculate the solute volume fraction in the liquid to be tested;

[0156] The solute volume fraction is input into a preset second liquid density calculation formula to calculate the density of the liquid to be measured.

[0157] When the first calculation module 3 is executed, the mole fraction is input into the preset first liquid density calculation formula to calculate the solute volume fraction in the liquid to be measured, wherein the preset first liquid density calculation formula is specifically:

[0158] ;

[0159] in, is the solute volume fraction (i.e. the volume fraction of solute A (solute A is the volatile component in the solution to be tested) in the liquid state in the solution to be tested); is the density of solute A in liquid state; is the density of solvent B (solvent B is the non-volatile component in the solution to be tested); is the reciprocal of the relative molecular mass of solute A; It is the reciprocal of the relative molecular mass of solvent B.

[0160] The solute volume fraction is input into the preset second liquid density calculation formula to calculate the density of the liquid to be tested, wherein the preset second liquid density calculation formula is specifically:

[0161] ;

[0162] in, is the density of the liquid to be measured.

[0163] Specifically, after the second calculation module 4 inputs the liquid level height of the liquid to be tested after the preset time into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, and calculates the mass of the liquid to be tested after the preset time according to the volume and density, it executes:

[0164] The liquid level height of the liquid to be tested after the preset time is input into the height-volume relationship matching model to calculate the volume of the liquid to be tested after the preset time;

[0165] Based on the product of volume and density, the mass of the liquid to be tested after a preset time is calculated.

[0166] When the second calculation module 4 is executed, the liquid level height of the liquid to be tested after the preset time is input into the height-volume relationship matching model, the volume of the liquid to be tested after the preset time is calculated, and then the product of the volume and density of the liquid to be tested after the preset time is calculated to obtain the mass of the liquid to be tested after the preset time.

[0167] As can be seen from the above, the non-contact liquid detection device obtains the three-dimensional data of the storage container of the liquid to be tested, establishes a height-volume relationship matching model of the storage container based on the three-dimensional data, uses the Antoine equation, Darcy's law and Raoult's law, and calculates the density of the liquid to be tested according to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested. After the liquid level height of the liquid to be tested after the preset time is input into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, the mass of the liquid to be tested after the preset time is calculated according to the volume and density; thus, through the height-volume relationship matching model, the Antoine equation, Darcy's law and Raoult's law are used to calculate the volume, density and mass of the liquid to be tested according to the liquid level height of the liquid to be tested after the preset time and the physical parameters of the liquid to be tested, thereby solving the problem that the existing non-contact liquid detection method cannot comprehensively evaluate the volume, density and mass of the liquid, and is suitable for liquid storage containers of various shapes and materials, and can detect the liquid by the height change of the liquid within a certain period of time without contacting the liquid, thereby improving the detection efficiency of the liquid.

[0168] Please refer to Figure 3 , Figure 3 The present invention provides a structural schematic diagram of an electronic device provided in an embodiment of the present application. The present application provides an electronic device, including: a processor 301 and a memory 302. The processor 301 and the memory 302 are interconnected and communicate with each other through a communication bus 303 and / or other forms of connection mechanisms (not shown). The memory 302 stores a computer program executable by the processor 301. When the electronic device is running, the processor 301 executes the computer program to execute the liquid non-contact detection method in any optional implementation of the above embodiment to achieve the following functions: obtaining three-dimensional data of a storage container of the liquid to be tested, establishing a height-volume relationship matching model of the storage container based on the three-dimensional data, using the Antoine equation, Darcy's law and Raoult's law, according to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, calculating the density of the liquid to be tested, inputting the liquid level height of the liquid to be tested after the preset time into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, and then calculating the mass of the liquid to be tested after the preset time according to the volume and density.

[0169] An embodiment of the present application provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the non-contact liquid detection method in any optional implementation of the above-mentioned embodiment is executed to achieve the following functions: three-dimensional data of a storage container of the liquid to be tested is acquired, and a height-volume relationship matching model of the storage container is established based on the three-dimensional data; the density of the liquid to be tested is calculated according to the liquid level height of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested by using the Antoine equation, Darcy's law and Raoult's law; after the liquid level height of the liquid to be tested after the preset time is input into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, the mass of the liquid to be tested after the preset time is calculated according to the volume and density. Among them, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable red-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0170] In the embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0171] In addition, the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, and may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0172] Furthermore, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0173] In this document, relational terms such as first and second, etc. are used merely to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0174] The above description is only an embodiment of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid non-contact detection method for performing non-contact detection on liquid, characterized in that: Includes steps: Acquire three-dimensional data of a storage container of the liquid to be tested; Based on the three-dimensional data, establishing a height-volume relationship matching model of the storage container; Using the Antoine equation, Darcy's law and Raoult's law, the density of the liquid to be tested is calculated according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested; After inputting the liquid level height of the liquid to be tested after the preset time into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, the mass of the liquid to be tested after the preset time is calculated based on the volume and the density; Using the Antoine equation, Darcy's law and Raoult's law, the density of the liquid to be tested is calculated according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, including: According to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, a mole fraction equation is constructed in combination with the Antoine equation, Darcy's law and Raoult's law; Inputting the preset time into the mole fraction equation to obtain the mole fraction of the liquid to be tested; Inputting the mole fraction into a preset liquid density calculation formula to calculate the density of the liquid to be tested; According to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, combined with the Antoine equation, Darcy's law and Raoult's law, a mole fraction equation is constructed, including: Establishing an ideal gas state equation according to the physical properties of the liquid to be tested; Based on the Antoine equation, the Darcy's law and the Raoult's law, the ideal gas state equation is adjusted to obtain a preliminary mole fraction equation; Determine the specific value of the volume parameter in the preliminary mole fraction equation according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, and obtain the mole fraction equation; The preliminary mole fraction equation is specifically: ； Adjusting the preliminary mole fraction equation yields ； use replace ,get ； in, is the volume parameter; R is the ideal gas constant, which is 8.3 J / (mol·K); T is the temperature, in K; is the volume of gas at time t; t is time, i.e. time t; is the gas molar volume, which is 2.38×10 at 20°C. -2 m 3 / mol; is the relative volatility of the volatile component in the gas and the non-volatile component in the liquid. The volatile component in the liquid to be tested is solute A, and the non-volatile component in the liquid to be tested is solvent B. is the relative volatility of solute A and solvent B, where , is the saturated vapor pressure of solute A, is the saturated vapor pressure of solvent B; is the mole fraction of the liquid to be tested at the initial moment; is the mole fraction of the liquid to be tested at time t; k is the permeability of the gas in the solid material; is the contact surface area of ​​the gas in the storage container that penetrates to the outside at time t, , H is the height of the storage container, h is the liquid level height of the liquid to be tested after a preset time, is the volume of the storage container; μ is the gas viscosity, which is 10 -5 Pa·s; is the container thickness; is the pressure of the outside air, taking 1 standard atmosphere, i.e. 101 kPa; is the volume of the gas in its initial state.

2. The liquid non-contact detection method according to claim 1, characterized in that: Based on the Antoine equation, the Darcy's law and the Raoult's law, the ideal gas state equation is adjusted to obtain a preliminary mole fraction equation, including: Based on the Antoine equation, Darcy's law and Raoult's law, a mole fraction relationship formula, a volatile volume calculation formula and a vapor pressure calculation formula are constructed; The ideal gas state equation is adjusted using the mole fraction relationship formula, the volatile volume calculation formula and the vapor pressure calculation formula to obtain a preliminary mole fraction equation.

3. The liquid non-contact detection method according to claim 1, characterized in that: The preset liquid density calculation formula includes a preset first liquid density calculation formula and a preset second liquid density calculation formula; Inputting the mole fraction into a preset liquid density calculation formula to calculate the density of the liquid to be measured includes: Inputting the mole fraction into the preset first liquid density calculation formula to calculate the solute volume fraction in the liquid to be tested; The solute volume fraction is input into the preset second liquid density calculation formula to calculate the density of the liquid to be measured.

4. A liquid non-contact detection device for performing non-contact detection on liquid, characterized in that: include: An acquisition module, used for acquiring three-dimensional data of a storage container of the liquid to be tested; An establishing module, used for establishing a height-volume relationship matching model of the storage container based on the three-dimensional data; A first calculation module is used to calculate the density of the liquid to be tested according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested by using the Antoine equation, Darcy's law and Raoult's law; A second calculation module is used to input the liquid level height of the liquid to be tested after the preset time into the height-volume relationship matching model to obtain the volume of the liquid to be tested after the preset time, and then calculate the mass of the liquid to be tested after the preset time according to the volume and the density; The first calculation module is used to calculate the density of the liquid to be tested according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested by using the Antoine equation, Darcy's law and Raoult's law, including: According to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, a mole fraction equation is constructed in combination with the Antoine equation, Darcy's law and Raoult's law; Inputting the preset time into the mole fraction equation to obtain the mole fraction of the liquid to be tested; Inputting the mole fraction into a preset liquid density calculation formula to calculate the density of the liquid to be tested; According to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, combined with the Antoine equation, Darcy's law and Raoult's law, a mole fraction equation is constructed, including: Establishing an ideal gas state equation according to the physical properties of the liquid to be tested; Based on the Antoine equation, the Darcy's law and the Raoult's law, the ideal gas state equation is adjusted to obtain a preliminary mole fraction equation; Determine the specific value of the volume parameter in the preliminary mole fraction equation according to the liquid level of the liquid to be tested after a preset time and the physical parameters of the liquid to be tested, and obtain the mole fraction equation; The preliminary mole fraction equation is specifically: ； Adjusting the preliminary mole fraction equation yields ； use replace ,get ； in, is the volume parameter; R is the ideal gas constant, which is 8.3 J / (mol·K); T is the temperature, in K; is the volume of gas at time t; t is time, i.e. time t; is the gas molar volume, which is 2.38×10 at 20°C. -2 m 3 / mol; is the relative volatility of the volatile component in the gas and the non-volatile component in the liquid. The volatile component in the liquid to be tested is solute A, and the non-volatile component in the liquid to be tested is solvent B. is the relative volatility of solute A and solvent B, where , is the saturated vapor pressure of solute A, is the saturated vapor pressure of solvent B; is the mole fraction of the liquid to be tested at the initial moment; is the mole fraction of the liquid to be tested at time t; k is the permeability of the gas in the solid material; is the contact surface area of ​​the gas in the storage container that penetrates to the outside at time t, , H is the height of the storage container, h is the liquid level height of the liquid to be tested after a preset time, is the volume of the storage container; μ is the gas viscosity, which is 10 -5 Pa·s; is the container thickness; is the pressure of the outside air, taking 1 standard atmosphere, i.e. 101 kPa; is the volume of the gas in its initial state.

5. An electronic device, characterized in that: It comprises a processor and a memory, wherein the memory stores a computer program executable by the processor, and when the processor executes the computer program, it runs the steps in the liquid non-contact detection method as described in any one of claims 1 to 3.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the liquid non-contact detection method according to any one of claims 1 to 3 are executed.

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