Intelligent control method and system for mixed gas proportioning

Abstract

The application relates to the technical field of mixed gas proportioning, and relates to an intelligent control method and system for mixed gas proportioning, which comprises the following steps: acquiring mixed chamber gas information of a mixed gas chamber, wherein the mixed chamber gas information comprises a mixed pressure, a mixed temperature and a mixed gas concentration sequence; acquiring usage environment information of a mixed gas usage container, wherein the usage environment information comprises a gas flow demand, a usage environment temperature and a usage environment pressure; acquiring mixed gas proportion information; performing synchronous gas inlet operation on a set of mixed gas containers according to the mixed gas proportion information and a pre-constructed initial gas inlet speed sequence to obtain target mixed gas; and discharging the target mixed gas into the mixed gas usage container according to the gas flow demand. The application can improve the gas proportioning accuracy and adjustment flexibility.

Description

Technical Field

[0001] This invention relates to the field of mixed gas proportioning technology, and in particular to an intelligent control method and system for mixed gas proportioning. Background Technology

[0002] Gas mixing is a core technology in industry, scientific research, and medical fields to achieve specific functions. Its fundamental purpose is to precisely control the proportions of gas components to meet goals such as performance optimization, safety assurance, process requirements, or scientific research. Although various industries now specify tolerance ranges for the use of gas mixtures, within which the mixture can meet the needs of the application scenario, extremely high precision is still required in scenarios such as chemical synthesis and thermodynamic research that require special gases.

[0003] Currently, gas mixing methods are divided into individual gas mixing and synchronous gas mixing. Individual gas mixing involves adding each gas separately to obtain a final mixture, which can achieve high mixing accuracy but lacks flexibility. For example, if the process requires dynamic adjustment of the mixing ratio (such as switching gas ratios based on the molten pool temperature during welding), individual mixing will cause lag (because a large amount of the previous gas has already entered the mixing chamber), and additional gas stirring equipment is required, making it unsuitable for high-flow-rate applications. Synchronous gas mixing, on the other hand, can adjust the discharge volume of each gas at any time, continuously generating a mixed gas, offering high flow rate and flexibility, but the data from various sensors fluctuates significantly, making it difficult to provide higher accuracy for the mixed gas. Summary of the Invention

[0004] This invention provides an intelligent control method for the proportioning of mixed gases, the main purpose of which is to improve the accuracy and adjustment flexibility of gas proportioning in the process of simultaneous mixing of multiple gases under the demand scenario of large flow mixed gases.

[0005] To achieve the above objectives, the present invention provides an intelligent control method for the proportioning of mixed gases, comprising:

[0006] Obtain the set of containers for the gas to be mixed;

[0007] A gas mixing chamber is acquired, and the gas information of the gas mixing chamber is acquired, wherein the gas mixing chamber includes an inlet and an outlet, and the gas information of the mixing chamber includes mixing pressure, mixing temperature and a sequence of mixed gas concentrations;

[0008] When a pre-built mixed gas intervention command is received, the mixed gas usage container is obtained, and the usage environment information of the mixed gas usage container is obtained, wherein the usage environment information includes gas flow rate requirement, usage environment temperature and usage environment pressure;

[0009] Determine whether the mixed pressure is within a preset mixed pressure range, wherein the mixed pressure range includes a maximum value and a minimum value;

[0010] When the mixing pressure is less than the minimum value of the interval, the mixing gas ratio information is obtained, and the exhaust port is closed. Using the air inlet, according to the mixing gas ratio information and the pre-constructed initial air intake speed sequence, the set of containers to be mixed is synchronously air-intaked to obtain the target mixing gas.

[0011] When the mixing pressure is greater than the minimum value of the interval and less than the maximum value of the interval, the target mixed gas is discharged into the mixed gas usage container through the exhaust port according to the gas flow rate requirement.

[0012] Optionally, the step of synchronously introducing gas into the set of containers to be mixed, based on the mixed gas ratio information and a pre-constructed initial intake velocity sequence, to obtain the target mixed gas includes:

[0013] Obtain the gas information of each gas container in the set of gas containers to be mixed to obtain a gas information sequence, wherein the gas information sequence includes the initial temperature and initial pressure of each gas to be mixed;

[0014] Obtain the gas types from the set of containers containing the gases to be mixed, resulting in a gas type sequence, wherein the gas type sequence is represented as:

[0015] ;

[0016] In the formula, This represents the sequence of gas types. Indicates the first type of gas. This indicates the second type of gas. Indicates the first Types of gas, Indicates the first Types of gases;

[0017] Based on the initial intake velocity sequence, the intake volume of each gas type in the gas type sequence is calculated to obtain the initial intake volume sequence, wherein the initial intake volume sequence is represented as:

[0018] ;

[0019] In the formula, This represents the initial intake volume sequence. Indicates the intake time. This represents the initial intake velocity corresponding to the first gas type in the initial intake velocity sequence. Indicates the first in the initial intake velocity sequence The initial intake velocity corresponding to each gas type Indicates the first in the initial intake velocity sequence The initial intake velocity corresponding to each gas type;

[0020] Based on the pre-constructed ideal gas law, expressions are constructed for each gas to be mixed as it enters the gas mixing chamber from the set of gas containers, resulting in the first gas equation, which is expressed as:

[0021] ;

[0022] In the formula, This represents the initial pressure corresponding to the first gas type in the gas information sequence to be mixed. This indicates the first gas in the sequence of information to be mixed. The initial pressure corresponding to each type of gas, This indicates the first gas in the sequence of information to be mixed. The initial pressure corresponding to each type of gas, This indicates the initial temperature corresponding to the first gas type in the gas information sequence to be mixed. This indicates the first gas in the sequence of information to be mixed. The initial temperature corresponding to each gas type This indicates the first gas in the sequence of information to be mixed. The initial temperature corresponding to each gas type This indicates the mixing pressure in the gas mixing chamber. This represents the fixed volume of the gas mixing chamber. This indicates the constant temperature of the gas mixing chamber;

[0023] Substituting each gas information in the gas-to-mix information sequence into the first gas equation yields the intake-pressure change formula, wherein the intake-pressure change formula is expressed as:

[0024] ;

[0025] In the formula, express constant, express constant, express The constant;

[0026] Based on the mixed gas ratio information and the ideal gas law, the velocity relationship between the gases is calculated, wherein the velocity relationship between the gases is expressed as:

[0027] ;

[0028] ;

[0029] In the formula, This refers to the first gas type and the second gas type in the mixed gas ratio information. The proportion of each gas type express The constant;

[0030] The difference between the mixed pressure and the maximum value of the interval is calculated to obtain the pressure to be filled;

[0031] Using the aforementioned intake-pressure change formula, the gas velocity relationship function of the pressure to be filled is calculated, and the gas velocity relationship function is limited according to the gas velocity relationship to obtain the intake velocity variation sequence.

[0032] Based on the inlet velocity variation sequence, the inlet control operation is performed on the set of gas containers to be mixed to obtain the target mixed gas.

[0033] Optionally, the step of using the exhaust port to discharge the target mixed gas into the mixed gas usage container according to the gas flow rate requirement includes:

[0034] Based on the ideal gas law and the environmental information, the exhaust volume and exhaust velocity of the exhaust port are calculated according to the gas flow demand, wherein the exhaust volume is expressed as:

[0035] ;

[0036] ;

[0037] In the formula, Indicates the exhaust port velocity. This indicates the exhaust volume of the exhaust port. This indicates the ambient pressure. This indicates the ambient temperature during use. The table shows the required gas flow rate.

[0038] The exhaust port is configured using the exhaust velocity to discharge the target mixed gas into the mixed gas usage container.

[0039] Optionally, in the process of discharging the target mixed gas into the mixed gas usage container, the method further includes:

[0040] Substituting the mixed pressure and exhaust volume into the intake-pressure change formula, the working intake speed sequence is obtained;

[0041] The air inlet is configured using the working air intake velocity sequence.

[0042] Optionally, configuring the exhaust port using the exhaust velocity to discharge the target mixed gas into the mixed gas usage container includes:

[0043] The environmental information of the container used for the mixed gas is monitored for changes.

[0044] When the usage environment information changes, the updated usage environment information is obtained, and the exhaust volume and exhaust speed of the exhaust port are calculated based on the updated usage environment information to obtain the updated exhaust volume and updated exhaust speed.

[0045] Determine whether the mixed pressure is at the maximum or minimum value of the interval;

[0046] If the mixed pressure is equal to the maximum or minimum value of the interval, the intake and exhaust ports are adjusted based on the stability of the mixed pressure according to the updated exhaust volume and the updated exhaust speed.

[0047] If the mixed pressure is between the maximum and minimum values ​​of the interval, the intake port is adjusted based on the updated exhaust volume and the updated exhaust speed.

[0048] Optionally, the step of adjusting the intake and exhaust ports based on the updated exhaust volume and updated exhaust speed, according to the principle of stabilizing the mixed pressure, includes:

[0049] Substituting the mixed pressure and the updated exhaust volume into the intake-pressure change formula, the updated working intake speed sequence is obtained;

[0050] The air inlet is adjusted using the updated working air intake velocity sequence;

[0051] The exhaust port is adjusted using the updated exhaust speed.

[0052] Optionally, the adjustment operation of the intake port based on the updated exhaust volume and updated exhaust speed, according to the updated exhaust volume and speed, includes:

[0053] Obtain the current exhaust port valve size, and based on the updated exhaust speed and the current exhaust port valve size, predict the mixing pressure in the gas mixing chamber to obtain the updated mixing pressure;

[0054] Using the intake-pressure change formula, and based on the updated exhaust volume and updated mixing pressure, the intake velocity sequence of the intake port is calculated to obtain the updated working intake velocity sequence.

[0055] Based on the updated working intake velocity sequence, the updated mixing pressure and the information sequence of the gas to be mixed, the intake valve size corresponding to each gas to be mixed in the intake port is calculated to obtain the intake valve size sequence;

[0056] The pre-built valve cluster in the air intake is adjusted according to the size sequence of the air intake valves.

[0057] Optionally, the step of calculating the intake valve size corresponding to each gas to be mixed in the intake port based on the updated working intake velocity sequence, updated mixing pressure, and gas to be mixed information sequence, to obtain the intake valve size sequence, includes:

[0058] Obtain the target gas container from the set of gas containers to be mixed, and obtain the initial pressure of the target gas container to be mixed to obtain the target initial pressure;

[0059] The updated working inlet velocity of the target gas container to be mixed is obtained from the updated working inlet velocity sequence to obtain the target inlet velocity;

[0060] The difference between the target initial pressure and the updated mixed pressure is calculated to obtain the target intake pressure difference;

[0061] Using a pre-constructed pressure-flow rate formula, the valve size of the target gas-to-mix container is calculated based on the target inlet velocity and the target inlet pressure difference, thus obtaining the target valve size. The pressure-flow rate formula is expressed as:

[0062] ;

[0063] in, This indicates the target intake speed. Indicates the size of the target valve. Represents the flow coefficient. This indicates the target intake pressure difference. This indicates the gas density of the gas to be mixed inside the target gas container;

[0064] The target valve size of each target gas container in the set of gas containers to be mixed is calculated to obtain the sequence of inlet valve sizes.

[0065] Optionally, after obtaining the mixing chamber gas information of the gas mixing chamber, the method further includes:

[0066] The gas ratio is calculated from the mixed gas concentration sequence in the gas mixing chamber information to obtain real-time gas ratio information;

[0067] The difference between the mixed gas ratio information and the real-time gas ratio information is calculated to obtain the gas ratio error distribution;

[0068] Feedback control is applied to the air inlet based on the gas ratio error distribution.

[0069] To achieve the above objectives, the present invention also provides an intelligent control system for mixing gas proportions, comprising:

[0070] The information acquisition module is used to acquire a set of containers for mixing gases, acquire a gas mixing chamber, and acquire the gas information of the gas mixing chamber, wherein the gas mixing chamber includes an inlet and an outlet, and the gas information of the mixing chamber includes mixing pressure, mixing temperature, and a sequence of mixed gas concentrations. When a pre-constructed gas mixing intervention command is received, the module acquires the container for using the mixed gas and acquires the environmental information of the container for using the mixed gas, wherein the environmental information includes gas flow rate requirement, environmental temperature, and environmental pressure.

[0071] A gas mixing module is used to determine whether the mixing pressure is within a preset mixing pressure range, wherein the mixing pressure range includes a maximum value and a minimum value. When the mixing pressure is less than the minimum value, the module acquires the mixed gas ratio information, closes the exhaust port, and uses the air inlet to perform synchronous air intake operation on the set of gas containers to be mixed according to the mixed gas ratio information and a pre-constructed initial air intake speed sequence to obtain the target mixed gas.

[0072] The mixed gas utilization module is used to discharge the target mixed gas into the mixed gas utilization container through the exhaust port according to the gas flow rate requirement when the mixed pressure is greater than the minimum value of the interval and less than the maximum value of the interval.

[0073] To address the above problems, the present invention also provides an electronic device, the electronic device comprising:

[0074] Memory, storing at least one instruction;

[0075] The processor executes the instructions stored in the memory to implement the intelligent control method for mixing gas ratios described above.

[0076] To address the aforementioned problems, the present invention also provides a computer-readable storage medium storing at least one instruction, which is executed by a processor in an electronic device to implement the intelligent control method for mixing gas ratios described above.

[0077] To address the problems described in the background art, this invention first constructs three parts: a collection of gas containers to be mixed, a gas mixing chamber, and a container for using the mixed gas. Upon receiving a gas mixing intervention command, each gas to be mixed in the gas container collection is introduced into the gas mixing chamber. When the mixing pressure in the gas mixing chamber is higher than the minimum value of the interval, the exhaust port can be opened to supply gas to the container for using the mixed gas. When the mixing pressure is lower than the minimum value of the interval, the exhaust port is temporarily closed to avoid uneven gas mixing. When the mixing pressure is between the minimum and maximum values ​​of the interval, the exhaust port can be opened, thereby ensuring a certain flow rate in the container for using the mixed gas. Considering the variability of the container for using the mixed gas, this invention monitors the usage environment and gas information in the mixing chamber, and through automated control, automatically adjusts the gas inlet and exhaust ports. The coordinated operation of the inlet and exhaust ports improves the flexibility and accuracy of the gas mixing process. Therefore, this invention can improve the accuracy and flexibility of gas ratio adjustments in the simultaneous mixing process of multiple gases in scenarios with high-flow-rate gas mixing requirements. Attached Figure Description

[0078] Figure 1 This is a flowchart illustrating an intelligent control method for mixing gas ratios according to an embodiment of the present invention.

[0079] Figure 2 A functional block diagram of an intelligent control system for mixing gas ratios provided in an embodiment of the present invention;

[0080] Figure 3 This is a schematic diagram of the structure of an electronic device for implementing the intelligent control method for mixing gas ratios, according to an embodiment of the present invention.

[0081] Explanation of reference numerals in the attached figures:

[0082] 10. Electronic device; 11. Processor; 12. Memory; 13. Bus.

[0083] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0084] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0085] This application provides an intelligent control method for the proportioning of mixed gases. The executing entity of the intelligent control method for the proportioning of mixed gases includes, but is not limited to, at least one of the following electronic devices that can be configured to execute the method provided in this application: a server, a terminal, etc. In other words, the intelligent control method for the proportioning of mixed gases can be executed by software or hardware installed on a terminal device or a server device, and the software can be a blockchain platform. The server includes, but is not limited to, a single server, a server cluster, a cloud server, or a cloud server cluster.

[0086] Reference Figure 1 The diagram shown is a flowchart illustrating an intelligent control method for mixing gas ratios according to an embodiment of the present invention. In this embodiment, the intelligent control method for mixing gas ratios includes:

[0087] S1. Obtain the set of containers for the gas to be mixed.

[0088] Specifically, in this embodiment of the invention, the intelligent control scenario for the mixing gas ratio is an integrated scenario, that is, when mixing gas is required, the pure gas in the set of gas containers to be mixed is controlled to be generated in real time and used in real time.

[0089] The set of gas containers to be mixed refers to a cluster of containers containing various gases. Considering the different physical properties of each gas, each gas container has a different pressure and is stored at different temperatures.

[0090] Specifically, in this embodiment of the invention, the set of gas containers to be mixed includes containers for industrial gases such as hydrogen, oxygen, nitrogen, argon, high-purity acetylene, high-purity carbon dioxide, and sulfur hexafluoride.

[0091] S2. Obtain the gas mixing chamber and obtain the gas information of the gas mixing chamber, wherein the gas mixing chamber includes an inlet and an outlet, and the gas information of the mixing chamber includes mixing pressure, mixing temperature and mixing gas concentration sequence.

[0092] The gas mixing chamber refers to a container for fully mixing various gases, including an inlet and an outlet. The inlet is used to connect to the collection of gas containers, and the outlet is used to connect to the subsequent container for using the mixed gas.

[0093] The gas information in the mixing chamber refers to the temperature, pressure, and distribution of various gas components in the gas mixing chamber.

[0094] Wherein, the mixing pressure refers to the pressure in the gas mixing chamber, the mixing temperature refers to the temperature in the gas mixing chamber, and the mixed gas concentration sequence refers to the proportional distribution information among various gases to be mixed in the gas mixing chamber.

[0095] Specifically, in this embodiment of the invention, the mixing temperature and mixing pressure can be obtained by temperature sensor and pressure sensor. Considering that the gases to be mixed have already been mixed together, the mixing temperature and mixing pressure are shared by all the gases to be mixed during the gas mixing process.

[0096] Specifically, in this embodiment of the invention, valve-type devices can be used as air inlets and exhaust outlets.

[0097] Specifically, in this embodiment of the invention, a laser gas analyzer is used to monitor the proportion of each gas in the gas mixing chamber to obtain a mixed gas concentration sequence.

[0098] In detail, in this embodiment of the invention, after obtaining the mixing chamber gas information of the gas mixing chamber, the method further includes:

[0099] The gas ratio is calculated from the mixed gas concentration sequence in the gas mixing chamber information to obtain real-time gas ratio information;

[0100] The difference between the mixed gas ratio information and the real-time gas ratio information is calculated to obtain the gas ratio error distribution;

[0101] Feedback control is applied to the air inlet based on the gas ratio error distribution.

[0102] The gas ratio calculation refers to the process of calculating the proportion of each gas concentration in the gas mixing chamber. The real-time gas ratio information refers to the result of the gas ratio calculation.

[0103] Specifically, calculating the difference between the mixed gas ratio information and the real-time gas ratio information involves subtracting the mixed gas ratio information from the real-time gas ratio information. The gas ratio error distribution is the difference between the mixed gas ratio information and the real-time gas ratio information.

[0104] Specifically, this invention obtains real-time gas ratio information through gas ratio calculation, and then compares the real-time gas ratio information with the user-defined mixed gas concentration sequence to obtain the gas ratio error distribution. This application can reduce errors and improve the accuracy of gas configuration by fine-tuning the valve size of the air inlet through a feedback control system.

[0105] For example, if the mixed gas ratio information is [first gas: 20%, second gas: 50%, ...], and the real-time gas ratio information is [first gas: 19%, second gas: 51%, ...], then the gas ratio error distribution is [first gas: 1%, second gas: -1%, ...]. Through feedback control, the valve size of the first gas inlet can be increased, and the valve size of the second gas inlet can be decreased, until the real-time gas ratio information becomes [first gas: 20%, second gas: 50%, ...].

[0106] S3. When a pre-constructed mixed gas intervention command is received, the mixed gas usage container is obtained, and the usage environment information of the mixed gas usage container is obtained, wherein the usage environment information includes the gas flow rate requirement, the usage environment temperature, and the usage environment pressure.

[0107] The gas mixture intervention command refers to an electrical signal generated by the user via a button, prompting the device to start generating a gas mixture.

[0108] The container for the mixed gas refers to the area where the mixed gas is consumed. It can be a small area required for the welding process, the exhaust hood of a chemical research laboratory, or the entire building that requires a special gas atmosphere.

[0109] The environmental information refers to the required flow rate, pressure, and temperature of the gas inside the container used for the mixed gas.

[0110] The gas flow rate requirement refers to the volume of mixed gas required per unit time in an environment where a mixed gas container is used.

[0111] The ambient temperature refers to the temperature of the container used for the mixed gas, and the ambient pressure refers to the pressure of the container used for the mixed gas.

[0112] Specifically, in many scenarios, such as chemical experiments and welding processes, either harmful gases are generated during the process and need to be discharged, requiring the mixed gas to be fluid, or the mixture is used outdoors where it is quickly diluted, necessitating a continuous output. In such scenarios, a high-flow-rate mixed gas formulation is required. Furthermore, the required mixed gas atmosphere varies depending on the stage of the operation; therefore, high flexibility in the mixed gas formulation is also necessary in these scenarios.

[0113] Specifically, in this embodiment of the invention, for calculation purposes, the ambient temperature at room temperature and the ambient pressure at one standard atmosphere can be selected. The gas flow rate requirement can be switched in real time according to the user's subjective needs, such as increasing the flow rate, decreasing the flow rate, or even shutting it off.

[0114] S4. Determine whether the mixed pressure is within a preset mixed pressure range, wherein the mixed pressure range includes the maximum value and the minimum value of the range.

[0115] The mixing pressure zone refers to a pressure area designed to ensure thorough mixing of gases and provide sufficient pressure for gas delivery. This mixing pressure zone must be higher than the ambient pressure to guarantee that the gas in the mixing chamber can be discharged into the gas delivery container.

[0116] Wherein, the maximum value of the interval refers to the maximum pressure within the mixed pressure interval. The minimum value of the interval refers to the minimum pressure within the mixed pressure interval.

[0117] When the mixing pressure is less than the minimum value of the interval, S5, obtain the mixed gas ratio information, close the exhaust port, and use the air inlet to perform synchronous air intake operation on the set of gas containers to be mixed according to the mixed gas ratio information and the pre-constructed initial air intake speed sequence to obtain the target mixed gas.

[0118] The mixed gas ratio information refers to the gas volume ratio desired by the user, which can be changed at any time during equipment use, such as "Ar 80%, CO2 20%".

[0119] Specifically, in this embodiment of the invention, when the mixed gas intervention command is received, the air inlet is immediately opened to generate mixed gas. However, in order to avoid the gas entering the mixed gas usage container before it is fully mixed, which would cause interference to the experiment and production, the exhaust port is kept closed when the mixing pressure is less than the minimum value of the range.

[0120] In detail, in this embodiment of the invention, the step of synchronously introducing air into the set of containers of the gas to be mixed according to the mixed gas ratio information and the pre-constructed initial air intake velocity sequence to obtain the target mixed gas includes:

[0121] Obtain the gas information of each gas container in the set of gas containers to be mixed to obtain a gas information sequence, wherein the gas information sequence includes the initial temperature and initial pressure of each gas to be mixed;

[0122] Obtain the gas types from the set of containers containing the gases to be mixed, resulting in a gas type sequence, wherein the gas type sequence is represented as:

[0123] ;

[0124] In the formula, This represents the sequence of gas types. Indicates the first type of gas. This indicates the second type of gas. Indicates the first Types of gas, Indicates the first Types of gases;

[0125] Based on the initial intake velocity sequence, the intake volume of each gas type in the gas type sequence is calculated to obtain the initial intake volume sequence, wherein the initial intake volume sequence is represented as:

[0126] ;

[0127] In the formula, This represents the initial intake volume sequence. Indicates the intake time. This represents the initial intake velocity corresponding to the first gas type in the initial intake velocity sequence. Indicates the first in the initial intake velocity sequence The initial intake velocity corresponding to each gas type Indicates the first in the initial intake velocity sequence The initial intake velocity corresponding to each gas type;

[0128] Based on the pre-constructed ideal gas law, expressions are constructed for each gas to be mixed as it enters the gas mixing chamber from the set of gas containers, resulting in the first gas equation, which is expressed as:

[0129] ;

[0130] In the formula, This represents the initial pressure corresponding to the first gas type in the gas information sequence to be mixed. This indicates the first gas in the sequence of information to be mixed. The initial pressure corresponding to each type of gas, This indicates the first gas in the sequence of information to be mixed. The initial pressure corresponding to each type of gas, This indicates the initial temperature corresponding to the first gas type in the gas information sequence to be mixed. This indicates the first gas in the sequence of information to be mixed. The initial temperature corresponding to each gas type This indicates the first gas in the sequence of information to be mixed. The initial temperature corresponding to each gas type This indicates the mixing pressure in the gas mixing chamber. This represents the fixed volume of the gas mixing chamber. This indicates the constant temperature of the gas mixing chamber;

[0131] Substituting each gas information in the gas-to-mix information sequence into the first gas equation yields the intake-pressure change formula, wherein the intake-pressure change formula is expressed as:

[0132] ;

[0133] In the formula, express constant, express constant, express The constant;

[0134] Based on the mixed gas ratio information and the ideal gas law, the velocity relationship between the gases is calculated, wherein the velocity relationship between the gases is expressed as:

[0135] ;

[0136] ;

[0137] In the formula, This refers to the first gas type and the second gas type in the mixed gas ratio information. The proportion of each gas type express The constant;

[0138] The difference between the mixed pressure and the maximum value of the interval is calculated to obtain the pressure to be filled;

[0139] Using the aforementioned intake-pressure change formula, the gas velocity relationship function of the pressure to be filled is calculated, and the gas velocity relationship function is limited according to the gas velocity relationship to obtain the intake velocity variation sequence.

[0140] Based on the inlet velocity variation sequence, the inlet control operation is performed on the set of gas containers to be mixed to obtain the target mixed gas.

[0141] The information about the gases to be mixed refers to the pressure and temperature states of each gas in the set of gas containers to be mixed.

[0142] The initial temperature refers to the temperature of the gas to be mixed inside the gas container.

[0143] The initial pressure refers to the pressure of the gas to be mixed inside the container.

[0144] The gas type sequence refers to the set of gas types for each gas in the set of gas containers to be mixed.

[0145] The inlet volume refers to the volume of gas leaving the inlet through the inlet per unit time. The initial inlet volume sequence refers to the set of volume changes per unit time for each gas type within its respective gas mixing container.

[0146] The ideal gas law states pressure × volume = amount of substance × ideal gas constant × temperature.

[0147] The first gas equation is constructed by ensuring that the sum of the amounts of the individual gases is equal to the amount of the mixture.

[0148] The intake-pressure change formula refers to the formula relating the intake velocity sequence at the intake port to the mixing pressure in the gas mixing chamber over time.

[0149] The velocity relationship between gases refers to the ratio of the amount of gas discharged per unit time for each gas to be mixed, for example, [1, ..., ... , ..., 】

[0150] The pressure to be filled refers to the maximum value of the interval minus the mixed pressure.

[0151] The gas velocity relationship function refers to:

[0152] ;

[0153] Wherein, limiting the gas velocity relationship function means:

[0154] ;

[0155] The intake speed variation sequence refers to { , ', , ...}

[0156] Wherein, the step of performing air intake control operation on the set of containers for mixing gases according to the air intake speed variation sequence refers to using { , ', ,……},replace{ , , , ...}, which serve as the actual valve control parameters for the air inlet.

[0157] Specifically, in this embodiment of the invention, both oxygen and carbon dioxide are stored at room temperature, so the initial temperature is 20°C. The pressure inside the oxygen container is 15 MPa, and the pressure inside the carbon dioxide container is 7 MPa. Therefore, the initial pressure of the oxygen container is 15 MPa, and the initial pressure of the carbon dioxide container is 7 MPa. In this embodiment of the invention, the set of containers for the gases to be mixed is assumed to have m containers, i = 1, 2, ..., m. In this invention, each gas is stored in one container by default, and i can represent the i-th container or the i-th gas type. Considering the production scale and gas filling properties, this invention assumes that the information in the sequence of gases to be mixed is stable. Furthermore, each container contains compressed gas, which will not be compressed into a liquid.

[0158] Specifically, in this embodiment of the invention, the gas types in each gas container to be mixed are first identified to obtain a gas type sequence. Then, based on the initial intake velocity sequence, the intake volume of each gas type per unit time is identified to obtain an initial intake volume sequence. At this time, the volume of the initial intake volume sequence is based on the initial temperature and initial pressure within the gas container to be mixed. When each gas to be mixed enters the gas mixing chamber, the temperature and pressure change, thus changing the volume of gas discharged from each gas container. According to the ideal gas law, the first gas equation mentioned above can be obtained. Considering that the information in the gas information sequence remains basically unchanged during the generation process, the first gas equation is simplified using a constant to obtain the intake-pressure change formula. This invention can find the relationship between gas flow rate and pressure increase by understanding the intake-pressure change formula.

[0159] Furthermore, considering that the gases to be mixed need to have a certain proportional relationship, this invention constructs the velocity relationship between gases using an ideal gas state approach. For example, the first gas type is equal to the i-th gas type. times, if

[0160] ;

[0161] ;

[0162] ;

[0163] but:

[0164] ;

[0165] get .

[0166] Specifically, this invention obtains the relationship between various velocities based on the intake-pressure change formula. Then, it obtains the relationship between various gas velocities through the gas velocity relationship, and can then calculate the individual gas velocities to obtain the intake velocity variation sequence. When the intake port is configured according to the intake velocity variation sequence, the intake port can be adjusted to a suitable size to quickly increase the mixed pressure to the maximum value in the range, thereby improving intake efficiency and accuracy.

[0167] When the mixing pressure is greater than the minimum value of the interval and less than the maximum value of the interval, S6, using the exhaust port, the target mixed gas is discharged into the mixed gas usage container according to the gas flow demand.

[0168] When the mixing pressure is greater than the minimum value of the interval and less than the maximum value of the interval, it indicates that the gases to be mixed are fully mixed and there is also a certain pressure to discharge the target mixed gas.

[0169] In detail, in this embodiment of the invention, the step of using the exhaust port to discharge the target mixed gas into the mixed gas usage container according to the gas flow rate requirement includes:

[0170] Based on the ideal gas law and the environmental information, the exhaust volume and exhaust velocity of the exhaust port are calculated according to the gas flow demand, wherein the exhaust volume is expressed as:

[0171] ;

[0172] ;

[0173] In the formula, Indicates the exhaust port velocity. This indicates the exhaust volume of the exhaust port. This indicates the ambient pressure. This indicates the ambient temperature during use. The table shows the required gas flow rate.

[0174] The exhaust port is configured using the exhaust velocity to discharge the target mixed gas into the mixed gas usage container.

[0175] Wherein, the exhaust volume refers to the volume of gas discharged from the target mixture within a certain time period. The exhaust velocity refers to the volume of gas discharged from the target mixture per unit time.

[0176] Specifically, in this embodiment of the invention, since the mixing pressure and mixing temperature of the mixed gas are uniform, and the ambient pressure and ambient temperature are also confirmed, the exhaust volume and exhaust velocity corresponding to the gas flow rate requirement can be directly calculated through the ideal gas state equation. In this embodiment of the invention, the exhaust velocity can be adjusted by configuring the valve size in the exhaust port.

[0177] Once the exhaust port is adjusted, the target mixed gas can be used according to the user's desired gas flow rate.

[0178] In detail, in this embodiment of the invention, the method further includes, during the process of discharging the target mixed gas into the mixed gas usage container:

[0179] Substituting the mixed pressure and exhaust volume into the intake-pressure change formula, the working intake speed sequence is obtained;

[0180] The air inlet is configured using the working air intake velocity sequence.

[0181] The working intake speed sequence refers to the calculation result of substituting the mixed pressure and exhaust volume into the intake-pressure change formula.

[0182] Specifically, in this embodiment of the invention, the working intake speed sequence can be obtained by substituting the mixing pressure and exhaust volume into the intake-pressure change formula. The working intake speed sequence allows each valve in the intake port to be adjusted so that the gas mixing chamber can maintain the stability of the mixing pressure even when the target mixed gas is discharged, so that the target mixed gas can be discharged stably and continuously into the mixed gas usage container.

[0183] In detail, in this embodiment of the invention, configuring the exhaust port using the exhaust velocity to discharge the target mixed gas into the mixed gas usage container includes:

[0184] The environmental information of the container used for the mixed gas is monitored for changes.

[0185] When the usage environment information changes, the updated usage environment information is obtained, and the exhaust volume and exhaust speed of the exhaust port are calculated based on the updated usage environment information to obtain the updated exhaust volume and updated exhaust speed.

[0186] Determine whether the mixed pressure is at the maximum or minimum value of the interval;

[0187] If the mixed pressure is equal to the maximum or minimum value of the interval, the intake and exhaust ports are adjusted based on the stability of the mixed pressure according to the updated exhaust volume and the updated exhaust speed.

[0188] If the mixed pressure is between the maximum and minimum values ​​of the interval, the intake port is adjusted based on the updated exhaust volume and the updated exhaust speed.

[0189] The change monitoring refers to string monitoring, which triggers a subsequent update process when it detects that a user has modified their usage environment information.

[0190] The updated usage environment information refers to the usage environment information modified by the user.

[0191] The process of calculating the exhaust volume and exhaust speed of the exhaust port based on the updated usage environment information is similar to the process described above.

[0192] The "updated exhaust volume" refers to the exhaust volume of the exhaust port corresponding to the updated usage environment information. The "updated exhaust speed" refers to the exhaust speed of the exhaust port corresponding to the updated usage environment information.

[0193] Specifically, in this embodiment of the invention, the device has two motor valves, an exhaust port and an intake port, which can be controlled. To improve control efficiency, the invention selects a control strategy based on whether the mixed pressure is at the maximum or minimum value of the range. When the mixed pressure is at the maximum or minimum value of the range, it indicates that the intake port adjustment has reached its limit, requiring adjustment of the exhaust port, and thus the intake port. Conversely, if the mixed pressure is between the maximum and minimum values ​​of the range, it indicates that the intake port has a high adjustment range, allowing adjustment only of the intake port without adjusting the exhaust port, thus improving the device's response speed.

[0194] In detail, in this embodiment of the invention, the adjustment operation of the intake port and exhaust port based on the stability of the mixed pressure according to the updated exhaust volume and the updated exhaust speed includes:

[0195] Substituting the mixed pressure and the updated exhaust volume into the intake-pressure change formula, the updated working intake speed sequence is obtained;

[0196] The air inlet is adjusted using the updated working air intake velocity sequence;

[0197] The exhaust port is adjusted using the updated exhaust speed.

[0198] The updated working intake speed sequence refers to the working intake speed sequence updated based on the mixing pressure and the updated exhaust volume.

[0199] Specifically, in this embodiment of the invention, the exhaust port can first be adjusted according to the updated exhaust speed. Then, based on the intake-pressure change formula, the mixed pressure and the updated exhaust volume are substituted to calculate the updated working intake speed sequence, thereby adjusting the size of each valve at the intake port using the updated working intake speed sequence.

[0200] In detail, in this embodiment of the invention, the adjustment operation of the intake port based on the updated exhaust volume and the updated exhaust speed, according to the updated exhaust volume and the updated exhaust speed, includes:

[0201] Obtain the current exhaust port valve size, and based on the updated exhaust speed and the current exhaust port valve size, predict the mixing pressure in the gas mixing chamber to obtain the updated mixing pressure;

[0202] Using the intake-pressure change formula, and based on the updated exhaust volume and updated mixing pressure, the intake velocity sequence of the intake port is calculated to obtain the updated working intake velocity sequence.

[0203] Based on the updated working intake velocity sequence, the updated mixing pressure and the information sequence of the gas to be mixed, the intake valve size corresponding to each gas to be mixed in the intake port is calculated to obtain the intake valve size sequence;

[0204] The pre-built valve cluster in the air intake is adjusted according to the size sequence of the air intake valves.

[0205] The current exhaust port valve size refers to the valve size of the exhaust port before the exhaust volume update.

[0206] The prediction of the mixing pressure in the gas mixing chamber refers to the process of first calculating the pressure difference based on the proportional relationship between exhaust velocity and pressure difference, and then calculating the updated mixing pressure based on the updated ambient pressure and the pressure difference. The updated mixing pressure refers to both the ambient pressure and the corresponding mixing pressure after the update.

[0207] The updated working intake speed sequence is equivalent to the updated working intake speed sequence described above when performing adjustment operations on the intake and exhaust ports based on the stability of the mixed pressure.

[0208] The intake valve size sequence refers to the result of calculating the size of each valve at the intake port based on the updated working intake speed sequence, the updated mixing pressure, and the information sequence of the gas to be mixed.

[0209] The valve cluster refers to the collection of individual valves in the air inlet.

[0210] Specifically, in this embodiment of the invention, the updated working intake velocity sequence is also calculated first. However, this calculation does not change the current exhaust port valve size, but changes the mixing pressure in the gas mixing chamber to obtain the updated mixing pressure. Then, the invention uses the intake-pressure change formula to calculate the intake velocity sequence of the intake port based on the updated exhaust volume and the updated mixing pressure to obtain the updated working intake velocity sequence. Finally, based on the updated working intake velocity sequence, the updated mixing pressure, and the sequence of gases to be mixed, the intake valve size corresponding to each gas to be mixed in the intake port is calculated to obtain the intake valve size sequence, completing the valve cluster adjustment process.

[0211] In detail, in this embodiment of the invention, the step of calculating the intake valve size corresponding to each gas to be mixed in the intake port based on the updated working intake velocity sequence, the updated mixing pressure, and the gas to be mixed information sequence, to obtain the intake valve size sequence, includes:

[0212] Obtain the target gas container from the set of gas containers to be mixed, and obtain the initial pressure of the target gas container to be mixed to obtain the target initial pressure;

[0213] The updated working inlet velocity of the target gas container to be mixed is obtained from the updated working inlet velocity sequence to obtain the target inlet velocity;

[0214] The difference between the target initial pressure and the updated mixed pressure is calculated to obtain the target intake pressure difference;

[0215] Using a pre-constructed pressure-flow rate formula, the valve size of the target gas-to-mix container is calculated based on the target inlet velocity and the target inlet pressure difference, thus obtaining the target valve size. The pressure-flow rate formula is expressed as:

[0216] ;

[0217] in, This indicates the target intake speed. Indicates the size of the target valve. Represents the flow coefficient. This indicates the target intake pressure difference. This indicates the gas density of the gas to be mixed inside the target gas container;

[0218] The target valve size of each target gas container in the set of gas containers to be mixed is calculated to obtain the sequence of inlet valve sizes.

[0219] The target gas container to be mixed refers to any one of the gas containers in the set of gas containers to be mixed. The target initial pressure refers to the initial pressure of the target gas container to be mixed.

[0220] The target intake velocity refers to the updated working intake velocity corresponding to the target gas container in the updated working intake velocity sequence.

[0221] The target intake pressure difference refers to the absolute value of the difference between the target initial pressure and the updated mixed pressure.

[0222] The pressure-flow rate formula is a formula constructed based on the relationship that the gas flow rate per unit time is directly proportional to the pore area, directly proportional to the pressure difference, and inversely proportional to the gas density.

[0223] The target valve size refers to the calculation result of substituting the target intake velocity and the target intake pressure difference into the pressure-flow formula.

[0224] The flow coefficient is related to the shape and roughness of the valve device, and its value is 0.6-0.7.

[0225] The inlet valve size sequence refers to the set of inlet valve sizes corresponding to each gas container to be mixed.

[0226] Specifically, in this embodiment of the invention, firstly, an arbitrary gas container to be mixed is selected as the target gas container to be mixed, and the initial pressure of the target gas container to be mixed is obtained to obtain the target initial pressure. Then, the updated working inlet velocity of the target gas container to be mixed is obtained from the updated working inlet velocity sequence to obtain the target inlet velocity.

[0227] Because of the aforementioned pressure-flow rate formula, it is also necessary to calculate the difference between the target initial pressure and the updated mixing pressure to obtain the target inlet pressure difference. When the target inlet velocity, the target inlet pressure difference, and some constant parameters are substituted into the aforementioned pressure-flow rate formula, the target valve size of the target gas container can be obtained. Then, by iterating through and calculating the target valve sizes of all target gas containers in the set of gas containers to be mixed, an inlet valve size sequence is obtained. This allows for adjustment of the valve cluster in the inlet without modifying the outlet, improving adjustment efficiency.

[0228] To address the problems described in the background art, this invention first constructs three parts: a collection of gas containers to be mixed, a gas mixing chamber, and a container for using the mixed gas. Upon receiving a gas mixing intervention command, each gas to be mixed in the gas container collection is introduced into the gas mixing chamber. When the mixing pressure in the gas mixing chamber is higher than the minimum value of the interval, the exhaust port can be opened to supply gas to the container for using the mixed gas. When the mixing pressure is lower than the minimum value of the interval, the exhaust port is temporarily closed to avoid uneven gas mixing. When the mixing pressure is between the minimum and maximum values ​​of the interval, the exhaust port can be opened, thereby ensuring a certain flow rate in the container for using the mixed gas. Considering the variability of the container for using the mixed gas, this invention monitors the usage environment and gas information in the mixing chamber, and through automated control, automatically adjusts the gas inlet and exhaust ports. The coordinated operation of the inlet and exhaust ports improves the flexibility and accuracy of the gas mixing process. Therefore, this invention can improve the accuracy and flexibility of gas ratio adjustments in the simultaneous mixing process of multiple gases in scenarios with high-flow-rate gas mixing requirements.

[0229] like Figure 2 The diagram shown is a functional block diagram of an intelligent control system for mixing gas ratios provided in an embodiment of the present invention.

[0230] The intelligent control system 100 for mixing gas ratios described in this invention can be installed in an electronic device. Depending on the functions implemented, the intelligent control system 100 for mixing gas ratios may include an information acquisition module 101, a gas mixing module 102, and a mixed gas usage module 103. The module described in this invention can also be called a unit, which refers to a series of computer program segments that can be executed by the processor of an electronic device and can perform a fixed function, and is stored in the memory of the electronic device.

[0231] The information acquisition module 101 is used to acquire a set of containers for mixing gases, acquire a gas mixing chamber, and acquire the gas information of the gas mixing chamber, wherein the gas mixing chamber includes an inlet and an outlet, and the gas information of the mixing chamber includes mixing pressure, mixing temperature and a sequence of mixed gas concentrations. When a pre-constructed gas mixing intervention command is received, the module acquires the container for using the mixed gas and acquires the environmental information of the container for using the mixed gas, wherein the environmental information includes gas flow rate requirement, environmental temperature and environmental pressure.

[0232] The gas mixing module 102 is used to determine whether the mixing pressure is within a preset mixing pressure range, wherein the mixing pressure range includes a maximum value and a minimum value. When the mixing pressure is less than the minimum value, the module obtains the mixed gas ratio information, closes the exhaust port, and uses the air inlet to perform synchronous air intake operation on the set of gas containers to be mixed according to the mixed gas ratio information and a pre-constructed initial air intake speed sequence to obtain the target mixed gas.

[0233] The mixed gas utilization module 103 is used to discharge the target mixed gas into the mixed gas utilization container through the exhaust port according to the gas flow rate requirement when the mixed pressure is greater than the minimum value of the interval and less than the maximum value of the interval.

[0234] In detail, the modules in the intelligent control system 100 for mixing gas ratios described in this embodiment of the invention employ the same methods as described above during use. Figure 1 The method used is the same as the intelligent control method for mixing gas ratios described in the previous section, and can produce the same technical effect, so it will not be repeated here.

[0235] like Figure 3 The diagram shown is a structural schematic of an electronic device for implementing an intelligent control method for mixing gas ratios, according to an embodiment of the present invention.

[0236] The electronic device 1 may include a processor 10, a memory 11 and a bus 12, and may also include a computer program stored in the memory 11 and executable on the processor 10, such as an intelligent control method program for mixing gas ratios.

[0237] The memory 11 includes at least one type of readable storage medium, such as flash memory, portable hard drive, multimedia card, card-type memory (e.g., SD or DX memory), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the electronic device 1, such as a portable hard drive. In other embodiments, the memory 11 can be an external storage device of the electronic device 1, such as a plug-in portable hard drive, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the electronic device 1. Furthermore, the memory 11 includes both internal storage units and external storage devices of the electronic device 1. The memory 11 can be used not only to store application software and various types of data installed on the electronic device 1, such as code for intelligent control methods for mixed gas ratios, but also to temporarily store data that has been output or will be output.

[0238] In some embodiments, the processor 10 may be composed of integrated circuits, such as a single packaged integrated circuit or multiple integrated circuits with the same or different functions, including combinations of one or more central processing units (CPUs), microprocessors, digital processing chips, graphics processors, and various control chips. The processor 10 is the control unit of the electronic device, connecting various components of the entire electronic device via various interfaces and lines. It executes programs or modules stored in the memory 11 (e.g., intelligent control methods for mixed gas ratios) and calls data stored in the memory 11 to perform various functions of the electronic device 1 and process data.

[0239] The bus 12 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. The bus 12 can be divided into an address bus, a data bus, a control bus, etc. The bus 12 is configured to realize the connection and communication between the memory 11 and at least one processor 10, etc.

[0240] Figure 3 Only electronic devices with components are shown; it will be understood by those skilled in the art that... Figure 3The structure shown does not constitute a limitation on the electronic device 1, and may include fewer or more components than shown, or combine certain components, or have different component arrangements.

[0241] For example, although not shown, the electronic device 1 may also include a power supply (such as a battery) to power the various components. Preferably, the power supply can be logically connected to the at least one processor 10 through a power management device, thereby enabling functions such as charging management, discharging management, and power consumption management. The power supply may also include one or more DC or AC power supplies, recharging devices, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components. The electronic device 1 may also include various sensors, Bluetooth modules, Wi-Fi modules, etc., which will not be described in detail here.

[0242] Furthermore, the electronic device 1 may also include a network interface. Optionally, the network interface may include a wired interface and / or a wireless interface (such as a Wi-Fi interface, a Bluetooth interface, etc.), which is typically used to establish communication connections between the electronic device 1 and other electronic devices.

[0243] Optionally, the electronic device 1 may further include a user interface, which may be a display, an input unit (such as a keyboard), and optionally, a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen, etc. The display may also be appropriately referred to as a screen or display unit, used to display information processed in the electronic device 1 and to display a visual user interface.

[0244] The intelligent control method program for mixing gas ratios stored in the memory 11 of the electronic device 1 is a combination of multiple instructions. When run in the processor 10, it can achieve the following:

[0245] Obtain the set of containers for the gas to be mixed;

[0246] A gas mixing chamber is acquired, and the gas information of the gas mixing chamber is acquired, wherein the gas mixing chamber includes an inlet and an outlet, and the gas information of the mixing chamber includes mixing pressure, mixing temperature and a sequence of mixed gas concentrations;

[0247] When a pre-built mixed gas intervention command is received, the mixed gas usage container is obtained, and the usage environment information of the mixed gas usage container is obtained, wherein the usage environment information includes gas flow rate requirement, usage environment temperature and usage environment pressure;

[0248] Determine whether the mixed pressure is within a preset mixed pressure range, wherein the mixed pressure range includes a maximum value and a minimum value;

[0249] When the mixing pressure is less than the minimum value of the interval, the mixing gas ratio information is obtained, and the exhaust port is closed. Using the air inlet, according to the mixing gas ratio information and the pre-constructed initial air intake speed sequence, the set of containers to be mixed is synchronously air-intaked to obtain the target mixing gas.

[0250] When the mixing pressure is greater than the minimum value of the interval and less than the maximum value of the interval, the target mixed gas is discharged into the mixed gas usage container through the exhaust port according to the gas flow rate requirement.

[0251] Specifically, the processor 10's implementation method for the above instructions can be found in [reference needed]. Figures 1 to 3 The descriptions of the relevant steps in the corresponding embodiments are not repeated here.

[0252] Furthermore, if the modules / units integrated in the electronic device 1 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. The computer-readable storage medium can be volatile or non-volatile. For example, the computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, or a read-only memory (ROM).

[0253] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor of an electronic device, can perform the following:

[0254] Obtain the set of containers for the gas to be mixed;

[0255] A gas mixing chamber is acquired, and the gas information of the gas mixing chamber is acquired, wherein the gas mixing chamber includes an inlet and an outlet, and the gas information of the mixing chamber includes mixing pressure, mixing temperature and a sequence of mixed gas concentrations;

[0256] When a pre-built mixed gas intervention command is received, the mixed gas usage container is obtained, and the usage environment information of the mixed gas usage container is obtained, wherein the usage environment information includes gas flow rate requirement, usage environment temperature and usage environment pressure;

[0257] Determine whether the mixed pressure is within a preset mixed pressure range, wherein the mixed pressure range includes a maximum value and a minimum value;

[0258] When the mixing pressure is less than the minimum value of the interval, the mixing gas ratio information is obtained, and the exhaust port is closed. Using the air inlet, according to the mixing gas ratio information and the pre-constructed initial air intake speed sequence, the set of containers to be mixed is synchronously air-intaked to obtain the target mixing gas.

[0259] When the mixing pressure is greater than the minimum value of the interval and less than the maximum value of the interval, the target mixed gas is discharged into the mixed gas usage container through the exhaust port according to the gas flow rate requirement.

[0260] In the embodiments provided by this invention, it should be understood that the disclosed devices, systems, and methods can be implemented in other ways. For example, the system embodiments described above are merely illustrative, and actual implementations may have other classification methods.

[0261] The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0262] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional modules.

[0263] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0264] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. An intelligent control method for the proportioning of mixed gases, characterized in that, The method includes: Obtain the set of containers for the gas to be mixed; A gas mixing chamber is acquired, and the gas information of the gas mixing chamber is acquired, wherein the gas mixing chamber includes an inlet and an outlet, and the gas information of the mixing chamber includes mixing pressure, mixing temperature and a sequence of mixed gas concentrations; When a pre-built mixed gas intervention command is received, the mixed gas usage container is obtained, and the usage environment information of the mixed gas usage container is obtained, wherein the usage environment information includes gas flow rate requirement, usage environment temperature and usage environment pressure; Determine whether the mixed pressure is within a preset mixed pressure range, wherein the mixed pressure range includes a maximum value and a minimum value; When the mixing pressure is less than the minimum value of the interval, the mixing gas ratio information is obtained, and the exhaust port is closed. Using the air inlet, according to the mixing gas ratio information and the pre-constructed initial air intake speed sequence, the set of containers to be mixed is synchronously air-intaked to obtain the target mixing gas. When the mixing pressure is greater than the minimum value of the interval and less than the maximum value of the interval, the target mixed gas is discharged into the mixed gas usage container through the exhaust port according to the gas flow rate requirement.

2. The intelligent control method for mixing gas ratios as described in claim 1, characterized in that, The step of synchronously introducing gas into the set of containers to be mixed, based on the mixed gas ratio information and a pre-constructed initial intake velocity sequence, to obtain the target mixed gas includes: Obtain the gas information of each gas container in the set of gas containers to be mixed to obtain a gas information sequence, wherein the gas information sequence includes the initial temperature and initial pressure of each gas to be mixed; Obtain the gas types from the set of containers containing the gases to be mixed, resulting in a gas type sequence, wherein the gas type sequence is represented as: ； In the formula, This represents the sequence of gas types. Indicates the first type of gas. This indicates the second type of gas. Indicates the first Types of gas, Indicates the first Types of gases; Based on the initial intake velocity sequence, the intake volume of each gas type in the gas type sequence is calculated to obtain the initial intake volume sequence, wherein the initial intake volume sequence is represented as: ； In the formula, This represents the initial intake volume sequence. Indicates the intake time. This represents the initial intake velocity corresponding to the first gas type in the initial intake velocity sequence. Indicates the first in the initial intake velocity sequence The initial intake velocity corresponding to each gas type Indicates the first in the initial intake velocity sequence The initial intake velocity corresponding to each gas type; Based on the pre-constructed ideal gas law, expressions are constructed for each gas to be mixed as it enters the gas mixing chamber from the set of gas containers, resulting in the first gas equation, which is expressed as: ； In the formula, This represents the initial pressure corresponding to the first gas type in the gas information sequence to be mixed. This indicates the first gas in the sequence of information to be mixed. The initial pressure corresponding to each type of gas, This indicates the first gas in the sequence of information to be mixed. The initial pressure corresponding to each type of gas, This indicates the initial temperature corresponding to the first gas type in the gas information sequence to be mixed. This indicates the first gas in the sequence of information to be mixed. The initial temperature corresponding to each gas type This indicates the first gas in the sequence of information to be mixed. The initial temperature corresponding to each gas type This indicates the mixing pressure in the gas mixing chamber. This represents the fixed volume of the gas mixing chamber. This indicates the constant temperature of the gas mixing chamber; Substituting each gas information in the gas-to-mix information sequence into the first gas equation yields the intake-pressure change formula, wherein the intake-pressure change formula is expressed as: ； In the formula, express constant, express constant, express The constant; Based on the mixed gas ratio information and the ideal gas law, the velocity relationship between the gases is calculated, wherein the velocity relationship between the gases is expressed as: ； ； In the formula, This refers to the first gas type and the second gas type in the mixed gas ratio information. The proportion of each gas type express The constant; The difference between the mixed pressure and the maximum value of the interval is calculated to obtain the pressure to be filled; Using the aforementioned intake-pressure change formula, the gas velocity relationship function of the pressure to be filled is calculated, and the gas velocity relationship function is limited according to the gas velocity relationship to obtain the intake velocity variation sequence. Based on the inlet velocity variation sequence, the inlet control operation is performed on the set of gas containers to be mixed to obtain the target mixed gas.

3. The intelligent control method for mixing gas ratios as described in claim 2, characterized in that, The step of using the exhaust port to discharge the target mixed gas into the mixed gas usage container according to the gas flow rate requirement includes: Based on the ideal gas law and the environmental information, the exhaust volume and exhaust velocity of the exhaust port are calculated according to the gas flow demand, wherein the exhaust volume is expressed as: ； ； In the formula, Indicates the exhaust port velocity. This indicates the exhaust volume of the exhaust port. This indicates the ambient pressure. This indicates the ambient temperature during use. The table shows the required gas flow rate. The exhaust port is configured using the exhaust velocity to discharge the target mixed gas into the mixed gas usage container.

4. The intelligent control method for mixing gas ratios as described in claim 3, characterized in that, The method further includes, during the process of discharging the target mixed gas into the mixed gas usage container: Substituting the mixed pressure and exhaust volume into the intake-pressure change formula, the working intake speed sequence is obtained; The air inlet is configured using the working air intake velocity sequence.

5. The intelligent control method for mixing gas ratios as described in claim 4, characterized in that, The step of configuring the exhaust port using the exhaust velocity to discharge the target mixed gas into the mixed gas usage container includes: The environmental information of the container used for the mixed gas is monitored for changes. When the usage environment information changes, the updated usage environment information is obtained, and the exhaust volume and exhaust speed of the exhaust port are calculated based on the updated usage environment information to obtain the updated exhaust volume and updated exhaust speed. Determine whether the mixed pressure is at the maximum or minimum value of the interval; If the mixed pressure is equal to the maximum or minimum value of the interval, the intake and exhaust ports are adjusted based on the stability of the mixed pressure according to the updated exhaust volume and the updated exhaust speed. If the mixed pressure is between the maximum and minimum values ​​of the interval, the intake port is adjusted based on the updated exhaust volume and the updated exhaust speed.

6. The intelligent control method for mixing gas ratios as described in claim 5, characterized in that, The step of adjusting the intake and exhaust ports based on the updated exhaust volume and updated exhaust velocity, according to the principle of stabilizing the mixed pressure, includes: Substituting the mixed pressure and the updated exhaust volume into the intake-pressure change formula, the updated working intake speed sequence is obtained; The air inlet is adjusted using the updated working air intake velocity sequence; The exhaust port is adjusted using the updated exhaust speed.

7. The intelligent control method for mixing gas ratios as described in claim 6, characterized in that, The adjustment operation of the intake port based on the updated exhaust volume and updated exhaust speed, according to the updated exhaust volume and updated exhaust speed, includes: Obtain the current exhaust port valve size, and based on the updated exhaust speed and the current exhaust port valve size, predict the mixing pressure in the gas mixing chamber to obtain the updated mixing pressure; Using the intake-pressure change formula, and based on the updated exhaust volume and updated mixing pressure, the intake velocity sequence of the intake port is calculated to obtain the updated working intake velocity sequence. Based on the updated working intake velocity sequence, the updated mixing pressure and the information sequence of the gas to be mixed, the intake valve size corresponding to each gas to be mixed in the intake port is calculated to obtain the intake valve size sequence; The pre-built valve cluster in the air intake is adjusted according to the size sequence of the air intake valves.

8. The intelligent control method for mixing gas ratios as described in claim 7, characterized in that, The step of calculating the intake valve size corresponding to each gas to be mixed in the intake port based on the updated working intake velocity sequence, updated mixing pressure, and gas to be mixed information sequence, to obtain the intake valve size sequence, includes: Obtain the target gas container from the set of gas containers to be mixed, and obtain the initial pressure of the target gas container to be mixed to obtain the target initial pressure; The updated working inlet velocity of the target gas container to be mixed is obtained from the updated working inlet velocity sequence to obtain the target inlet velocity; The difference between the target initial pressure and the updated mixed pressure is calculated to obtain the target intake pressure difference; Using a pre-constructed pressure-flow rate formula, the valve size of the target gas-to-mix container is calculated based on the target inlet velocity and the target inlet pressure difference, thus obtaining the target valve size. The pressure-flow rate formula is expressed as: ； in, This indicates the target intake speed. Indicates the size of the target valve. Represents the flow coefficient. This indicates the target intake pressure difference. This indicates the gas density of the gas to be mixed inside the target gas container; The target valve size of each target gas container in the set of gas containers to be mixed is calculated to obtain the sequence of inlet valve sizes.

9. The intelligent control method for mixing gas ratios as described in claim 8, characterized in that, After obtaining the mixing chamber gas information of the gas mixing chamber, the method further includes: The gas ratio is calculated from the mixed gas concentration sequence in the gas mixing chamber information to obtain real-time gas ratio information; The difference between the mixed gas ratio information and the real-time gas ratio information is calculated to obtain the gas ratio error distribution; Feedback control is applied to the air inlet based on the gas ratio error distribution.

10. An intelligent control system for mixing gas proportions, characterized in that, The system includes: The information acquisition module is used to acquire a set of containers for mixing gases, acquire a gas mixing chamber, and acquire the gas information of the gas mixing chamber, wherein the gas mixing chamber includes an inlet and an outlet, and the gas information of the mixing chamber includes mixing pressure, mixing temperature, and a sequence of mixed gas concentrations. When a pre-constructed gas mixing intervention command is received, the module acquires the container for using the mixed gas and acquires the environmental information of the container for using the mixed gas, wherein the environmental information includes gas flow rate requirement, environmental temperature, and environmental pressure. A gas mixing module is used to determine whether the mixing pressure is within a preset mixing pressure range, wherein the mixing pressure range includes a maximum value and a minimum value. When the mixing pressure is less than the minimum value, the module acquires the mixed gas ratio information, closes the exhaust port, and uses the air inlet to perform synchronous air intake operation on the set of gas containers to be mixed according to the mixed gas ratio information and a pre-constructed initial air intake speed sequence to obtain the target mixed gas. The mixed gas utilization module is used to discharge the target mixed gas into the mixed gas utilization container through the exhaust port according to the gas flow rate requirement when the mixed pressure is greater than the minimum value of the interval and less than the maximum value of the interval.

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