Inflation control method for physical adsorption instrument, intelligent equipment and storage medium

Abstract

The invention relates to the technical field of physical adsorption testing, particularly provides an inflation control method for a physical adsorption instrument, intelligent equipment and a storage medium, and aims at solving the problem that an existing inflation control method is low in testing efficiency. The method comprises the steps that a target pressure point set set by a user is acquired, the target pressure point set comprises a plurality of target pressure values arranged from small to large, and the first target pressure value serves as a current target pressure value; predicting a target inflation pressure value of the outer air chamber according to the adsorption quantity increment, the temperature value of the outer air chamber, the balance pressure value and the balance temperature value of the sample chamber and the current target pressure value; based on the target inflation pressure value, sequentially controlling a first valve and a second valve to inflate gas into the sample chamber through an external gas source and the outer gas chamber, and obtaining a balance pressure value of the outer gas chamber; whether the next target pressure value is selected for inflation control or not is determined according to the balance pressure value of the outer air chamber and the preset standard of the target pressure value, so that the test time is saved, and the test efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of physical adsorption testing technology, specifically providing an inflation control method, intelligent device, and storage medium for a physical adsorption instrument. Background Technology

[0002] Physical adsorption analyzers are key instruments used to determine the physical properties of porous materials, such as specific surface area and pore size distribution. During physical adsorption testing, adsorbate gas needs to be introduced into the sample chamber of the instrument in stages. Traditional gas filling control methods cannot accurately predict the filling pressure value, often requiring multiple operations to reach the target pressure point, resulting in a lengthy testing process and low efficiency when measuring at multiple pressure points.

[0003] Therefore, there is a need in the field for a method that can quickly and accurately achieve inflation control at the target pressure point. Summary of the Invention

[0004] This application aims to solve the aforementioned technical problem, namely, to address the issue of low testing efficiency in existing inflation control methods.

[0005] In a first aspect, this application provides an inflation control method for a physical adsorption instrument, the physical adsorption instrument including an outer gas chamber, a sample chamber, a first valve, and a second valve, wherein the first valve is disposed between the outer gas chamber and an external gas source, and the second valve is disposed between the outer gas chamber and the sample chamber. The method includes: step S2, obtaining a user-defined set of target pressure points, the set of target pressure points including multiple target pressure values ​​arranged in ascending order, and using the first target pressure value as the current target pressure value to execute step S4; step S4, obtaining the current temperature value of the outer gas chamber and the average temperature of the sample chamber. The system balances the pressure and temperature values ​​and determines the adsorption increment based on the current target pressure value. It then predicts the target inflation pressure value of the outer gas chamber based on the adsorption increment, the temperature value of the outer gas chamber, the balance pressure and temperature values ​​of the sample chamber, and the current target pressure value. Step S6: Based on the target inflation pressure value, the first valve and the second valve are sequentially controlled to inject gas into the sample chamber via an external gas source and the outer gas chamber, obtaining the balance pressure value of the outer gas chamber. Step S8: Based on the preset standard of the balance pressure value of the outer gas chamber and the target pressure value, it is determined whether to select the next target pressure value for inflation control.

[0006] In one technical solution of the above-mentioned inflation control method for a physical adsorption instrument, step S8 includes: determining whether the equilibrium pressure value of the outer air chamber meets the preset standard of the target pressure value; if it does not meet the standard, step S4 is re-executed based on the current target pressure value; if it meets the standard, the next target pressure value is selected from the target pressure point set as the current target pressure value and step S4 is re-executed.

[0007] In one technical solution of the above-mentioned inflation control method for a physical adsorption instrument, the method further includes: obtaining the error range set by the user for the current target pressure value; determining the lower limit and upper limit of the current target pressure value according to the error range; the step of determining whether the equilibrium pressure value of the outer air chamber meets the preset standard of the target pressure value includes: determining whether the equilibrium pressure value of the outer air chamber is greater than or equal to the lower limit of the current target pressure value.

[0008] In one technical solution of the above-mentioned gas filling control method for a physical adsorption instrument, after step S6, the method further includes: obtaining the number of times gas is filled into the sample chamber via an external gas source and an external gas chamber, and the corresponding adsorption isotherm; the step of determining the adsorption increment based on the current target pressure value includes: if the number of gas fillings is less than a preset threshold, setting the adsorption increment to a preset initial value; if the number of gas fillings is greater than or equal to the preset threshold, calculating the adsorption increment required to reach the current target pressure value based on the adsorption isotherm.

[0009] In one technical solution of the above-mentioned gas control method for a physical adsorption instrument, the adsorption isotherm is determined by the relationship between the adsorption amount and the relative pressure obtained after multiple gas fillings, and the step of calculating the adsorption amount increment required to reach the current target pressure value based on the adsorption isotherm includes: calculating the adsorption amount increment required to reach the current target pressure value based on the relationship between the adsorption amount and the relative pressure.

[0010] In one technical solution of the above-mentioned inflation control method for a physical adsorption instrument, the step of calculating the adsorption increment required to reach the current target pressure value based on the relationship between the adsorption amount and the relative pressure includes: using the linear difference method to calculate the adsorption increment required to reach the current target pressure value based on the logarithm of the adsorption amount and the relative pressure.

[0011] In one technical solution of the above-mentioned gas filling control method for a physical adsorption instrument, step S6 includes: if it is the first time filling, the first valve and the second valve are controlled sequentially based on a preset multiple of the target filling pressure value to fill the sample chamber with gas through an external gas source and an external gas chamber; otherwise, the first valve and the second valve are controlled sequentially based on the target filling pressure value to fill the sample chamber with gas through an external gas source and an external gas chamber.

[0012] In one technical solution of the above-mentioned inflation control method for a physical adsorption instrument, before determining whether the equilibrium pressure value of the outer air chamber meets the preset standard of the target pressure value, the method further includes: if the lower limit of the current target pressure value is less than the upper limit of the previous target pressure value, modifying the lower limit of the current target pressure value to the upper limit of the previous target pressure value.

[0013] In one technical solution of the above-mentioned gas filling control method for a physical adsorption instrument, the step of predicting the target gas filling pressure value of the outer gas chamber based on the adsorption increment, the temperature value of the outer gas chamber, the equilibrium pressure value and equilibrium temperature value of the sample chamber, and the current target pressure value includes: using the static volumetric method to predict the target gas filling pressure value of the outer gas chamber based on the adsorption increment, the temperature value of the outer gas chamber, the equilibrium pressure value and equilibrium temperature value of the sample chamber, and the current target pressure value using the following formula: , where i represents the number of inflations; This represents the target inflation pressure value for the i-th inflation. Mass represents the increase in adsorption amount; Mass represents the sample mass. This represents the equilibrium pressure value of the sample chamber during the i-th inflation. This represents the equilibrium pressure value of the sample chamber during the (i-1)th inflation. Indicates the first parameter. , Indicates the volume of the outer air chamber. Indicates the cold free space coefficient; This represents the temperature value of the outer air chamber during the i-th inflation. This represents the equilibrium temperature value of the sample chamber during the i-th inflation.

[0014] In one technical solution of the above-mentioned gas filling control method for a physical adsorption instrument, the step of calculating the adsorption increment required to reach the current target pressure value based on the adsorption isotherm if the number of gas fillings is greater than or equal to a preset threshold includes: when the number of gas fillings is greater than or equal to the preset threshold, determining the adsorption increment using the following formula: .in, Indicates the increase in adsorption amount; i represents the number of aeration cycles; This represents the amount of air adsorbed during the i-th inflation. This represents the amount of air adsorbed during the (i-1)th inflation. Represents the relative pressure of the i-th inflation, where P0 represents the equilibrium pressure value of the sample chamber, and P0 represents the saturated vapor pressure of the gas at the experimental temperature. This represents the relative pressure of the current target pressure value, where p represents the current target pressure value.

[0015] In a second aspect, a smart device is provided, comprising at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program, which, when executed by the at least one processor, implements the method described in any of the above-described technical solutions for the inflation control method of a physical adsorption apparatus.

[0016] In a third aspect, a computer-readable storage medium is provided, wherein a plurality of program codes are stored therein, the program codes being adapted to be loaded and run by a processor to perform the method described in any of the above-described technical solutions for the inflation control method of a physical adsorption apparatus.

[0017] This application predicts the target inflation pressure by using the adsorption increment, the temperature of the outer chamber, the equilibrium pressure and temperature of the sample chamber, and the current target pressure. Inflation control is then performed based on the predicted target inflation pressure, reducing the number of inflation cycles required to reach the target pressure and improving testing efficiency. By comparing the equilibrium pressure of the outer chamber obtained after inflation with a preset standard for the target pressure, if the standard is not met, the prediction and inflation are repeated based on the current target pressure. If the standard is met, the system automatically switches to the next target pressure until all target pressures are tested. This effectively improves the automation and continuity of inflation control, ensuring the reliability and final accuracy of the testing process.

[0018] This application introduces an error range set by the user for the current target pressure value, making the judgment criteria more flexible and in line with actual testing needs, and further improving testing efficiency while ensuring data validity. By automatically correcting when the lower limit of the current target pressure value is less than the upper limit of the previous target pressure value, it effectively prevents overlapping target pressure intervals caused by error range settings, ensuring the rationality and orderliness of pressure changes during the testing process.

[0019] This application ensures inflation stability by using a preset initial value for the adsorption increment when the number of inflations is less than a preset threshold (in the initial stage of testing). When the number of inflations is greater than or equal to the preset threshold (after accumulating a certain amount of data), it uses adsorption isotherms for more accurate prediction. This achieves the goal of improving the accuracy of target inflation pressure prediction, thereby improving testing efficiency and precision. Since some adsorption models exhibit better linearity in logarithmic coordinates, this application further improves prediction accuracy by using the linear interpolation method to calculate the adsorption increment required to reach the current target pressure value based on the logarithm of the adsorption amount and relative pressure.

[0020] This application uses a preset multiple of the target inflation pressure to control inflation for the initial inflation, while using the target inflation pressure value for other situations. This effectively solves the problem of insufficient inflation volume that may occur due to a lack of data in the initial stage. This differentiated approach improves fault tolerance and stability in the initial stage. Attached Figure Description

[0021] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It will be readily understood by those skilled in the art that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. In the drawings: Figure 1 This is a schematic flowchart of the main steps of an inflation control method for a physical adsorption apparatus according to an embodiment of this application; Figure 2 This is a schematic diagram of the main structure of a smart device according to an embodiment of this application. Detailed Implementation

[0022] Some embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application.

[0023] In the description of this application, the terms "first," "second," etc., are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus. The terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium; a connection within two elements; a wireless connection or a wired connection.

[0024] Furthermore, "module" and "processor" can include hardware, software, or a combination of both. A module can include hardware circuitry, various suitable sensors, communication ports, and memory, and may also include software components such as program code, or a combination of software and hardware. A processor can be a central processing unit, microprocessor, image processor, digital signal processor, or any other suitable processor. A processor has data and / or signal processing capabilities. A processor can be implemented in software, in hardware, or a combination of both. Computer-readable storage media includes any suitable medium capable of storing program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, etc.

[0025] See appendix Figure 1 , Figure 1This is a schematic flowchart of the main steps of an inflation control method for a physical adsorption apparatus according to an embodiment of this application. Figure 1 As shown, the gas control method for the physical adsorption instrument in this application embodiment mainly includes the following steps S2 to S8.

[0026] It should be noted that the specific numerical values ​​mentioned in the embodiments of this application (including but not limited to target pressure values, lower and upper limits of target pressure value settings, preset initial values ​​of adsorption increment, etc.) and the specific ranges formed by these values ​​are merely illustrative. Those skilled in the art should understand that these values ​​can be adaptively adjusted, selected, and combined according to the actual instrument model, sample characteristics, environmental conditions, and specific accuracy requirements, and should not be construed as an undue limitation on the scope of protection of this application. Any logical adjustments or substitutions of relevant parameters based on the inventive concept of this application should fall within the scope of protection of this application.

[0027] Step S2: Obtain the set of target pressure points set by the user. The set of target pressure points includes multiple target pressure values ​​arranged from smallest to largest. Take the first target pressure value as the current target pressure value and execute step S4.

[0028] In this embodiment, the first target pressure value among the multiple target pressure values ​​arranged in ascending order is used as the current target pressure value to execute step S4. As an example, assume that the multiple target pressure values ​​in the target pressure point set are 10 kPa, 20 kPa, and 30 kPa, then 10 kPa is used as the current target pressure value to execute step S4.

[0029] In an optional implementation, step S1 may be included before step S2, specifically including steps S11 and S12.

[0030] Step S11: Obtain the error range set by the user for the current target pressure value.

[0031] In this embodiment, each target pressure value in the target pressure point set can have its own error range set, and the error ranges for each target pressure value can be the same or different. For example, a narrow error range can be set for critical target pressure values, and a wide error range can be set for non-critical target pressure values, in order to reduce testing time and improve testing efficiency.

[0032] Step S12: Determine the lower and upper limits of the current target pressure value based on the error range.

[0033] In this embodiment, the lower and upper limits of the current target pressure value are determined based on the error range set for each target pressure value in step S11. For example, assuming the error range for each target pressure value is 10%, and the current target pressure value is 10 kPa, then the lower and upper limits of the current target pressure value are 9 kPa and 11 kPa, respectively.

[0034] Step S4: Obtain the current temperature value of the outer gas chamber, the equilibrium pressure value and equilibrium temperature value of the sample chamber, and determine the adsorption increment based on the current target pressure value. Predict the target inflation pressure value of the outer gas chamber based on the adsorption increment, the temperature value of the outer gas chamber, the equilibrium pressure value and equilibrium temperature value of the sample chamber and the current target pressure value.

[0035] In this embodiment, the physical adsorption apparatus includes an outer gas chamber, a sample chamber, a first valve, and a second valve. The first valve is located between the outer gas chamber and an external gas source, and the second valve is located between the outer gas chamber and the sample chamber. For example, the temperature value of the outer gas chamber, the equilibrium pressure value and equilibrium temperature value of the sample chamber can be acquired in real time using devices such as temperature sensors and pressure sensors, and the increase in adsorption amount required to reach the current target pressure value can be estimated. Then, based on the increase in adsorption amount, the temperature value of the outer gas chamber, the equilibrium pressure value and equilibrium temperature value of the sample chamber, and the current target pressure value, the target inflation pressure value of the outer gas chamber is predicted.

[0036] In one embodiment, the target inflation pressure of the outer gas chamber is predicted using the static volumetric method with the following formula: based on the adsorption increment, the temperature of the outer gas chamber, the equilibrium pressure and temperature of the sample chamber, and the current target pressure. , where i represents the number of inflations; This represents the target inflation pressure value for the i-th inflation. Mass represents the increase in adsorption amount; Mass represents the sample mass. This represents the equilibrium pressure value of the sample chamber during the i-th inflation. This represents the equilibrium pressure value of the sample chamber during the (i-1)th inflation. Indicates the first parameter. , Indicates the volume of the outer air chamber. Indicates the cold free space coefficient; This represents the temperature value of the outer air chamber during the i-th inflation. This represents the equilibrium temperature value of the sample chamber during the i-th inflation.

[0037] In one implementation, the adsorption increment can be determined based on the current target pressure value and the number of inflation cycles. Specifically, if the number of inflation cycles is less than a preset threshold, the adsorption increment can be set to 0, i.e., the preset initial value of the adsorption increment is 0. For example, during the first and second inflation cycles, the adsorption increment dV is set to 0.

[0038] If the number of inflations is greater than or equal to a preset threshold, the increase in adsorption amount required to reach the current target pressure value can be calculated from the relationship curve (adsorption isotherm) between adsorption amount and relative pressure obtained after multiple inflations. For example, if it is the third or subsequent inflation, the adsorption amount increment dV corresponding to the current target pressure value can be calculated using linear interpolation based on the obtained adsorption isotherm.

[0039] In one embodiment, when the number of inflation cycles is greater than or equal to a preset threshold, the increase in adsorption capacity can be determined by the following formula: .in, Indicates the increase in adsorption amount; i represents the number of aeration cycles; This represents the adsorption amount during the i-th inflation (cumulative). This represents the amount of air adsorbed during the (i-1)th inflation. Represents the relative pressure of the i-th inflation, where P0 represents the equilibrium pressure value of the sample chamber, and P0 represents the saturated vapor pressure of the gas at the experimental temperature. This represents the relative pressure of the current target pressure value, where p represents the current target pressure value.

[0040] This embodiment ensures startup stability by using a preset initial value of the adsorption increment when the number of inflations is less than a preset threshold (in the initial stage of testing). When the number of inflations is greater than or equal to the preset threshold (after accumulating a certain amount of data), it utilizes the adsorption isotherm for more accurate prediction. This achieves the goal of improving the accuracy of predicting the target inflation pressure value, thereby improving testing efficiency and precision.

[0041] In one implementation, the increment of adsorption required to reach the current target pressure value can also be calculated using the logarithm of the relative pressure according to the following formula: .

[0042] Since some adsorption models exhibit better linearity on logarithmic coordinates, this embodiment calculates the increment of adsorption required to reach the current target pressure value based on the logarithm of adsorption amount and relative pressure, which helps to improve prediction accuracy.

[0043] Step S6: Based on the target inflation pressure value, the first valve and the second valve are controlled sequentially to fill the sample chamber with gas through the external gas source and the external gas chamber, and the equilibrium pressure value of the external gas chamber is obtained.

[0044] In this embodiment, the first valve is opened to allow gas from an external gas source to enter the outer gas chamber through the first valve until the target inflation pressure is reached. Then, the first valve is closed, and the second valve is opened to allow gas to enter the sample chamber from the outer gas chamber through the second valve. After a preset time (e.g., a 1-second delay), the equilibrium pressure value of the outer gas chamber is obtained. It should be noted that the equilibrium pressure value of the outer gas chamber at this time is equivalent to the overall pressure value after the outer gas chamber and the sample chamber are connected.

[0045] In one alternative implementation, if it is the first inflation, the target inflation pressure value can be increased by a preset multiple (such as 3 times) before controlling the gas inflation; otherwise, the target inflation pressure value can be used directly to control the gas inflation, so as to solve problems such as insufficient inflation volume that may exist in the initial stage.

[0046] In an optional embodiment, after step S6, the method further includes step S71, which involves obtaining the number of times the gas is introduced into the sample chamber via an external gas source and an external gas chamber, and the corresponding adsorption isotherm. This embodiment records key data during the adsorption test, such as the number of times the gas is introduced, the (cumulative) adsorption amount after reaching equilibrium, and the relative pressure corresponding to the adsorption amount. An adsorption isotherm is then generated based on the recorded adsorption amount and the corresponding relative pressure.

[0047] Step S8: Determine whether to select the next target pressure value for inflation control based on the preset standard of the balance pressure value and the target pressure value of the outer air chamber.

[0048] In this embodiment, determining whether the balance pressure value of the outer air chamber meets the preset standard of the target pressure value can be done by determining whether the balance pressure value of the outer air chamber is greater than or equal to the lower limit of the current target pressure value, thereby determining whether to select the next target pressure value for inflation control.

[0049] In one embodiment, step S8 specifically includes the following steps S81 and S82.

[0050] Step S81: Determine whether the balance pressure value of the outer air chamber meets the preset standard of the target pressure value. If it does not meet the standard, re-execute step S4 based on the current target pressure value.

[0051] In this embodiment, if the equilibrium pressure value of the outer air chamber is less than the lower limit of the current target pressure value, it is considered that it does not meet the preset standard of the target pressure value, and step S4 is re-executed using the current target pressure value.

[0052] Step S82: If the condition is met, select the next target pressure value from the target pressure point set as the current target pressure value and repeat step S4.

[0053] In this embodiment, if the equilibrium pressure value of the outer air chamber is greater than or equal to the lower limit of the current target pressure value, it is considered to meet the preset standard of the target pressure value, and the next target pressure value is selected for inflation control. That is, the current target pressure value is updated with the next target pressure value in the target pressure point set, and step S4 is re-executed.

[0054] In one optional implementation, before determining whether the equilibrium pressure value of the outer air chamber is greater than or equal to the lower limit of the current target pressure value, the method further includes comparing the lower limit of the current target pressure value with the upper limit of the previous target pressure value. If the lower limit of the current target pressure value is less than the upper limit of the previous target pressure value, then the lower limit of the current target pressure value is modified to the upper limit of the previous target pressure value. This embodiment, by modifying the lower limit of the current target pressure value, makes the preset standard of the target pressure value more reasonable, ensuring the rationality and orderliness of pressure changes during the test.

[0055] In one implementation, when the balance pressure value of the outer air chamber is immediately determined to meet the preset standard of the target pressure value after updating the current target pressure value with the next target pressure value, the above correction method can prevent the current target pressure value from being skipped because the difference between the current target pressure value and the previous target pressure value is too small.

[0056] Understandably, if the equilibrium pressure value of the outer air chamber is greater than or equal to the lower limit of the current target pressure value and the current target pressure value is the last target pressure value in the set of target pressure points, then the process ends.

[0057] In one application scenario of this application, BET (Brunauer-Emmett-Teller) surface area determination experiments were conducted using both the traditional step-by-step gas injection method and the method provided in this application. The target pressure values ​​for the experiments were 5 kPa, 10 kPa, and 30 kPa, respectively. The traditional step-by-step method took approximately 40 minutes to complete the test for all the above target pressure values. The experimental data are shown in Table 1.

[0058] Table 1. Experimental data using the traditional stepping method

[0059] Pressure point (kPa) <![CDATA[Adsorption capacity (cm 3 / g)]]> 0.17820874 0.80294 1.47502497 1.42040 4.3819524 1.77312 8.17927495 2.00691 10.91004983 2.13132 13.71247470 2.24287 16.53954983 2.34644 19.3727999 2.44572 22.22639918 2.54268 25.2439825 2.64462 28.34559977 2.75030 31.11270070 2.84527

[0060] Using the inflation control method for the physical adsorption instrument provided in this application, it took about 20 minutes to complete the test of all the above target pressure values. The corresponding experimental data are shown in Table 2.

[0061] Table 2. Experimental data using the inflation control method of this application

[0062] Pressure point (kPa) <![CDATA[Adsorption capacity (cm 3 / g)]]> 5.40079139 1.84959 11.56996191 2.156 29.83970046 2.79510

[0063] As can be seen from the above data, the method provided in this application can effectively save testing time and improve testing efficiency. Furthermore, the experimental data obtained using the inflation control method of this application are only for the preset target pressure point, the adsorption data points are refined and free of redundant data points, and the curves are smooth and reliable, achieving the goal of optimizing data quality and facilitating subsequent fitting of the adsorption model and material characterization analysis.

[0064] It should be noted that although the steps in the above embodiments are described in a specific order, those skilled in the art will understand that in order to achieve the effect of this application, different steps do not necessarily have to be executed in such an order. They can be executed simultaneously (in parallel) or in other orders. These adjusted solutions are equivalent to the technical solutions described in this application and therefore will also fall within the protection scope of this application.

[0065] Those skilled in the art will understand that all or part of the processes in the method of the above-described embodiment can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable storage medium can include any entity or device capable of carrying the computer program code, a medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory, a random access memory, an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0066] Another aspect of this application provides a computer-readable storage medium.

[0067] In one embodiment of a computer-readable storage medium according to this application, the computer-readable storage medium may be configured to store a program that performs the inflation control method for a physical adsorption apparatus described in the above-described method embodiments. This program may be loaded and run by a processor to implement the above-described inflation control method for a physical adsorption apparatus. For ease of explanation, only the parts related to the embodiments of this application are shown; for specific technical details not disclosed, please refer to the method section of the embodiments of this application. The computer-readable storage medium may be a storage device comprising various electronic devices. Optionally, in the embodiments of this application, the computer-readable storage medium is a non-transitory computer-readable storage medium.

[0068] Another aspect of this application provides a smart device.

[0069] In one embodiment of a smart device according to this application, the smart device may include at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program, which, when executed by the at least one processor, implements the methods described in any of the above embodiments. See Appendix Figure 2 , Figure 2 The image exemplarily illustrates a communication connection between memory 11 and processor 12 via a bus.

[0070] In some embodiments of this application, the smart device may further include at least one sensor for sensing information. The sensor is communicatively connected to any type of processor mentioned in this application. Optionally, the smart device described in this application may be, but is not limited to, mobile phones, tablets, desktop computers, laptops, handheld computers, notebook computers, in-vehicle devices, ultra-mobile personal computers (UMPCs), netbooks, personal digital assistants (PDAs), augmented reality (AR) / virtual reality (VR) devices, etc., and this application does not limit this.

[0071] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A gas filling control method for a physical adsorption instrument, the physical adsorption instrument comprising an outer gas chamber, a sample chamber, a first valve, and a second valve, wherein the first valve is disposed between the outer gas chamber and an external gas source, and the second valve is disposed between the outer gas chamber and the sample chamber, characterized in that, The method includes: Step S2, obtaining a set of target pressure points set by the user, the set of target pressure points including multiple target pressure values ​​arranged from smallest to largest, and using the first target pressure value as the current target pressure value to execute step S4; Step S4, obtaining the current temperature value of the outer gas chamber, the equilibrium pressure value and equilibrium temperature value of the sample chamber, and determining the adsorption increment based on the current target pressure value, and predicting the target inflation pressure value of the outer gas chamber based on the adsorption increment, the temperature value of the outer gas chamber, the equilibrium pressure value and equilibrium temperature value of the sample chamber and the current target pressure value; Step S6, controlling the first valve and the second valve sequentially based on the target inflation pressure value to fill the sample chamber with gas through the external gas source and the outer gas chamber, and obtaining the equilibrium pressure value of the outer gas chamber; Step S8, determining whether to select the next target pressure value for inflation control based on the preset standard of the equilibrium pressure value of the outer gas chamber and the target pressure value.

2. The gas control method for a physical adsorption apparatus according to claim 1, characterized in that, Step S8 includes: determining whether the equilibrium pressure value of the outer air chamber meets the preset standard of the target pressure value; if it does not meet the standard, step S4 is re-executed based on the current target pressure value; if it meets the standard, the next target pressure value is selected from the target pressure point set as the current target pressure value and step S4 is re-executed.

3. The inflation control method for a physical adsorption apparatus according to claim 2, characterized in that, The method further includes: obtaining the error range set by the user for the current target pressure value; determining the lower limit and upper limit of the current target pressure value according to the error range; and determining whether the balance pressure value of the outer air chamber meets the preset standard of the target pressure value, including: determining whether the balance pressure value of the outer air chamber is greater than or equal to the lower limit of the current target pressure value.

4. The inflation control method for a physical adsorption apparatus according to any one of claims 1 to 3, characterized in that, After step S6, the method further includes: obtaining the number of times the gas is filled into the sample chamber via an external gas source and an external gas chamber, and the corresponding adsorption isotherm; the step of determining the adsorption increment based on the current target pressure value includes: if the number of fillings is less than a preset threshold, setting the adsorption increment to a preset initial value; if the number of fillings is greater than or equal to the preset threshold, calculating the adsorption increment required to reach the current target pressure value based on the adsorption isotherm.

5. The gas control method for a physical adsorption apparatus according to claim 4, characterized in that, The adsorption isotherm is determined by the relationship between the adsorption amount and the relative pressure obtained after multiple inflations. The step of calculating the adsorption amount increment required to reach the current target pressure value based on the adsorption isotherm includes: calculating the adsorption amount increment required to reach the current target pressure value based on the relationship between the adsorption amount and the relative pressure.

6. The gas control method for a physical adsorption apparatus according to claim 5, characterized in that, The step of calculating the adsorption increment required to reach the current target pressure value based on the relationship between the adsorption amount and the relative pressure includes: using the linear difference method to calculate the adsorption increment required to reach the current target pressure value based on the logarithm of the adsorption amount and the relative pressure.

7. The inflation control method for a physical adsorption apparatus according to any one of claims 1 to 3, characterized in that, Step S6 includes: if it is the first inflation, the first valve and the second valve are controlled sequentially based on a preset multiple of the target inflation pressure value to fill the sample chamber with gas through the external gas source and the external gas chamber; otherwise, the first valve and the second valve are controlled sequentially based on the target inflation pressure value to fill the sample chamber with gas through the external gas source and the external gas chamber.

8. The inflation control method for a physical adsorption apparatus according to claim 3, characterized in that, Before determining whether the equilibrium pressure value of the outer air chamber meets the preset standard of the target pressure value, the method further includes: if the lower limit of the current target pressure value is less than the upper limit of the previous target pressure value, modifying the lower limit of the current target pressure value to the upper limit of the previous target pressure value.

9. A smart device, characterized in that, include: At least one processor; And a memory communicatively connected to the at least one processor; wherein the memory stores a computer program that, when executed by the at least one processor, implements the inflation control method for a physical adsorption apparatus according to any one of claims 1 to 8.

10. A computer-readable storage medium storing a plurality of program codes, characterized in that, The program code is adapted to be loaded and run by a processor to perform the inflation control method for a physical adsorption apparatus as described in any one of claims 1 to 8.

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