Safe charging method based on three-dimensional model and electronic equipment

Abstract

The invention is suitable for the technical field of equipment control, and provides a safe feeding method based on a three-dimensional model and electronic equipment, and the method comprises the steps: if a preset feeding triggering condition is met, obtaining a state parameter of a current inner cavity; importing the powder particle density and the propulsion parameters into a preset three-dimensional simulation model, and determining a powder particle processing strategy corresponding to the pressure reduction piston; and after at least one powder particle treatment operation in the powder particle treatment strategy is executed, liquid carbon dioxide is added into the cavity based on the calibrated feeding value. By the adoption of the method, the operation safety of the dry ice manufacturing equipment can be improved, the situation that pushing of the pressure reduction piston is blocked due to the fact that the density of dry ice powder particles is too large, and consequently parts are damaged is avoided, and the usable time of the dry ice manufacturing equipment is prolonged.

Description

Technical Field

[0001] The present application belongs to the technical field of equipment control, and in particular relates to a safe feeding method and electronic equipment based on a three-dimensional model. Background Art

[0002] Dry ice, as a commonly used coolant, is widely used in various fields. The existing dry ice manufacturing technology generally converts liquid carbon dioxide into solid carbon dioxide by throttling and reducing pressure, wherein the throttling and reducing pressure method can be to control the air pressure of the closed inner cavity by controlling the pressure reducing piston to realize dry ice manufacturing. However, in the process of controlling the air pressure of the inner cavity by the pressure reducing piston and adding liquid carbon dioxide to the inner cavity, in addition to the formation of solid dry ice in the inner cavity, there will be a large amount of dry ice particles in the air, and the remaining dry ice particles in the hollow part are difficult to relieve pressure, which may cause the inner cavity pressure to be too high, resulting in the breakage of dry ice, and even causing damage to the mold when the pressurizing piston is pushed. It can be seen that in the existing process of manufacturing dry ice, the safety is low when adding materials to the inner cavity, and the mold is easily damaged. Summary of the invention

[0003] The embodiments of the present application provide a safe feeding method and electronic device based on a three-dimensional model, which can solve the problems of low safety when feeding into the inner cavity and easy damage to the mold in the existing process of making dry ice.

[0004] In a first aspect, an embodiment of the present application provides a safe feeding method based on a three-dimensional model, characterized in that it includes:

[0005] If the preset charging trigger condition is met, the state parameters of the current inner cavity are obtained; the state parameters include the powder density of the dry ice powder particles and the real-time propulsion parameters of the decompression piston in the cavity;

[0006] The powder density and the propulsion parameters are imported into a preset three-dimensional simulation model to determine a powder processing strategy corresponding to the pressure reducing piston; the powder processing strategy includes a calibrated feeding value after adjusting the target feeding value corresponding to the feeding trigger condition;

[0007] After at least one powder processing operation in the powder processing strategy is executed, liquid carbon dioxide is added to the chamber based on the calibration addition value.

[0008] In a possible implementation manner of the first aspect, importing the powder density and the propulsion parameter into a preset three-dimensional simulation model to determine the powder processing strategy corresponding to the decompression piston includes:

[0009] A preset dry ice particle size distribution function is introduced according to the powder particle density to calculate the dry ice particle size distribution information in the cavity; the dry ice particle size distribution function is specifically:

[0010]

[0011] Wherein, Gra[i] is the distribution probability corresponding to the i-th particle size in the preset particle size distribution sequence; the particle size distribution sequence is obtained by sorting each particle size based on volume size; BaseGra is the average particle size of the particle size distribution sequence; σ is the preset probability calibration coefficient; e is a natural constant;

[0012] Based on the dry ice distribution particle size information, constructing a dry ice distribution model in the cavity through the three-dimensional simulation model;

[0013] Adjusting the propulsion position of the simulated piston in the three-dimensional inner cavity model corresponding to the inner cavity by using the real-time propulsion parameter;

[0014] Determine at least one of the powder processing operations and an expected reduction volume after the powder processing operation according to the dry ice distribution model and the three-dimensional inner cavity model after updating the advancement position of the simulated piston; the expected reduction volume is an expected volume of liquid carbon dioxide obtained after the powder processing operation;

[0015] Determining the calibration addition value according to the target addition value and the expected reduction volume;

[0016] The powder handling strategy is generated based on the calibration dosing value and at least one of the powder handling operations.

[0017] In a possible implementation manner of the first aspect, determining at least one of the powder and particle processing operations and an expected reduction volume after the powder and particle processing operation according to the dry ice distribution model and the three-dimensional inner cavity model after updating the advancement position of the simulated piston includes:

[0018] Determining an expected advancement distance of the simulated piston during the feeding process according to the three-dimensional inner cavity model and the updated advancement position;

[0019] The amount of covering powder particles within the range of the expected advancement distance is determined based on the dry ice distribution model; the amount of covering powder particles is specifically:

[0020]

[0021] Wherein, TotalC is the amount of covering powder particles; α iis the adsorption probability corresponding to the i-th particle size; N is the total number of particle sizes contained in the particle size distribution sequence; S is the area of ​​the inner cavity; Dis is the expected advancement distance; Destiy is the powder density;

[0022] The expected reduction volume is determined according to the amount of covering powder particles.

[0023] In a possible implementation of the first aspect, an adsorption component is disposed on the outer surface of the pressure reducing piston; the adsorption component includes a barrier layer, a filter layer, and a storage layer; the filter layer includes a plurality of filter screens; the aperture of each filter screen corresponds to one of the particle sizes in the particle size distribution sequence;

[0024] After executing and completing at least one powder processing operation in the powder processing strategy, adding liquid carbon dioxide to the chamber based on the calibration addition value comprises:

[0025] In the process of advancing the decompression piston, the barrier layer in the adsorption component is opened to adsorb the dry ice particles in the inner cavity to the storage layer through the filter layer;

[0026] When the decompression piston is pushed to the charging trigger position, the barrier layer is closed and the storage layer is decompressed to reduce the dry ice particles in the storage layer to liquid carbon dioxide;

[0027] The liquid carbon dioxide in the storage layer and the liquid carbon dioxide in an amount equal to the calibration addition value delivered through the addition port are added to the inner cavity.

[0028] In a possible implementation manner of the first aspect, if a preset feeding trigger condition is met, obtaining a current state parameter of the inner cavity includes:

[0029] Determine the actual volume of the solid dry ice formed in the inner cavity by a sensor in the inner cavity;

[0030] Determining the expected dry ice volume according to the current real-time advancement parameter of the decompression piston;

[0031] If the difference between the expected dry ice volume and the actual volume is greater than a preset volume threshold, the current state parameter of the inner cavity is obtained.

[0032] In a possible implementation manner of the first aspect, after executing and completing at least one powder processing operation in the powder processing strategy, adding liquid carbon dioxide to the chamber based on the calibration addition value includes:

[0033] According to the operation order corresponding to each of the powder processing operations in the powder processing strategy, each of the powder processing operations is executed in sequence;

[0034] After completing any powder processing operation, determining the powder density of the dry ice powder in the inner cavity;

[0035] If the powder density is less than or equal to a preset density threshold, the subsequent powder processing operation after any of the powder processing operations in the operation sequence is stopped, and liquid carbon dioxide is added to the chamber based on the calibration addition value.

[0036] In a possible implementation of the first aspect, the outer surface of the pressure reducing piston further includes a heating component;

[0037] After executing and completing at least one powder processing operation in the powder processing strategy, adding liquid carbon dioxide to the chamber based on the calibration addition value, further comprising:

[0038] Based on the temperature rise coefficient in the powder processing strategy, controlling the heating component to operate at a power corresponding to the temperature rise coefficient to reduce the dry ice powder within a preset range into liquid carbon dioxide;

[0039] After a preset heating time, the heating component is turned off, and the reduced liquid carbon dioxide and the liquid carbon dioxide added in an amount equal to the calibration addition value are subjected to a decompression treatment to obtain solid dry ice.

[0040] In a second aspect, an embodiment of the present application provides a safe feeding device based on a three-dimensional model, the device comprising:

[0041] A charging trigger unit, used to obtain the current state parameters of the inner cavity if the preset charging trigger conditions are met; the state parameters include the powder density of the dry ice powder particles and the real-time propulsion parameters of the decompression piston in the cavity;

[0042] a powder processing strategy determination unit, configured to import the powder density and the propulsion parameter into a preset three-dimensional simulation model to determine a powder processing strategy corresponding to the pressure reducing piston; the powder processing strategy includes a calibrated feeding value after adjusting the target feeding value corresponding to the feeding trigger condition;

[0043] A feeding execution unit is used to add liquid carbon dioxide to the chamber based on the calibration feeding value after executing at least one powder processing operation in the powder processing strategy.

[0044] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements a method as described in any one of the first aspects above when executing the computer program.

[0045] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method described in any one of the first aspects above is implemented.

[0046] In a fifth aspect, an embodiment of the present application provides a computer program product, which, when executed on a drone, enables the drone to execute any of the methods described in the first aspect above.

[0047] Compared with the prior art, the embodiments of the present application have the following beneficial effects: when a preset charging trigger condition is met, the state parameters in the inner cavity of the dry ice manufacturing device can be obtained, and the above state parameters may include the powder density corresponding to the dry ice powder in the inner cavity and the real-time propulsion parameters of the pressure reducing piston in the inner cavity. The electronic device can import the preset three-dimensional simulation model through the above-obtained state parameters to simulate the charging process into the inner cavity, judge whether the current dry ice powder will cause component damage, and determine the powder processing strategy for avoiding component damage through the three-dimensional simulation model to eliminate the dry ice powder in the inner cavity; the electronic device can execute the powder processing operation in the powder processing strategy on the inner cavity, and after completing the powder processing operation, add liquid carbon dioxide to the inner cavity of the dry ice manufacturing device, so as to achieve the purpose of safely charging the dry ice manufacturing equipment. Compared with the existing dry ice manufacturing technology, before adding material to the inner cavity of the dry ice manufacturing equipment, the process of adding material to the inner cavity can be simulated by a three-dimensional simulation model, and a matching powder particle processing strategy can be generated to process the dry ice powder particles in the inner cavity before adding material, thereby improving the operating safety of the dry ice manufacturing equipment, avoiding the blockage of the advancement of the pressure reducing piston due to the excessive density of the dry ice powder particles, causing damage to components, and extending the service life of the dry ice manufacturing equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0049] Figure 1 It is a structural schematic diagram of a control system for dry ice manufacturing provided in one embodiment of the present application;

[0050] Figure 2 It is a schematic diagram of an implementation of a safe feeding method based on a three-dimensional model provided in an embodiment of the present application;

[0051] Figure 3It is a specific implementation flow chart of S202 in a safe charging method based on a three-dimensional model provided in the second embodiment of the present application;

[0052] Figure 4 is a schematic diagram of the propulsion volume of the pressure reducing piston provided in one embodiment of the present application;

[0053] Figure 5 This is a specific implementation flow chart of a safe charging method based on a three-dimensional model in S203 provided in the third embodiment of the present application;

[0054] Figure 6 It is a structural schematic diagram of a pressure reducing piston provided in one embodiment of the present application;

[0055] Figure 7 This is a specific implementation flow chart of a safe charging method based on a three-dimensional model in S201 provided in the fourth embodiment of the present application;

[0056] Figure 8 This is a specific implementation flow chart of a safe charging method based on a three-dimensional model in S203 provided in the fifth embodiment of the present application;

[0057] Fig. 9 This is a specific implementation flow chart of a safe charging method based on a three-dimensional model in S203 provided in the sixth embodiment of the present application;

[0058] Fig.10 It is a structural schematic diagram of a safe feeding device based on a three-dimensional model provided in an embodiment of the present application;

[0059] Fig.11 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0060] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0061] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0062] In addition, in the description of the present application specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0063] The safe charging method based on a three-dimensional model provided in the embodiment of the present application can be applied to a control terminal equipped with a control system for dry ice manufacturing. For example, Figure 1 FIG. 1 is a schematic diagram showing a control system for dry ice manufacturing provided by an embodiment of the present application. Figure 1 The control system for dry ice manufacturing includes a control terminal 11 and a dry ice manufacturing device 12. The control terminal 11 can establish a communication connection with relevant components in the dry ice manufacturing device. For example, the control terminal 11 can be connected to the air component detection module 121 in the dry ice manufacturing device to obtain the density of dry ice powder particles in the inner cavity; the control terminal 11 can also be connected to the decompression piston 122 and the feeding module 123 in the dry ice manufacturing device, so as to control the above two modules to perform related operations, such as controlling the feeding module 123 to perform the feeding operation, and controlling the decompression piston 122 to move in the inner cavity or controlling its related components to perform the powder particle processing operation.

[0064] See also Figure 2 , Figure 2 The schematic diagram of the implementation of a safe charging method based on a three-dimensional model provided in an embodiment of the present application is shown. The safe charging method based on a three-dimensional model is applied to the above-mentioned control terminal 11, that is, the execution subject of the embodiment of the present application can be the above-mentioned control terminal 11, wherein the control terminal 11 is specifically an electronic device, and the electronic device can be a computer, a laptop, a server, a smart phone and other electronic devices. For the convenience of description, the subsequent execution subject is explained by taking the control terminal as an example. Specifically, the method includes the following steps:

[0065] In S201, if the preset charging trigger condition is met, the state parameters of the current inner cavity are obtained; the state parameters include the powder density of the dry ice powder particles and the real-time propulsion parameters of the decompression piston in the cavity.

[0066] In this embodiment, the electronic device can obtain and determine the current residual value of the dry ice manufacturing device. Since the dry ice manufacturing device specifically converts liquid carbon dioxide into solid dry ice by throttling and reducing pressure, that is, after adding liquid carbon dioxide to the inner cavity of the dry ice manufacturing device, the liquid will gradually convert into a solid. The electronic device can determine the liquid residual in the inner cavity and judge whether the current liquid carbon dioxide residual meets the manufacturing requirements, such as judging whether the liquid residual in the inner cavity is greater than a preset residual threshold. If the current liquid residual is less than or equal to the above residual threshold, it means that the inner cavity needs to be charged, and the operation of S201 is performed; on the contrary, if the current liquid residual is greater than the above residual threshold, it is recognized that there is no need to charge the inner cavity at present, and the preset dry ice manufacturing operation can continue to be performed, such as continuing to reduce the air pressure in the inner cavity through the pressure reducing piston to convert the liquid carbon dioxide into solid dry ice.

[0067] In some implementations, the electronic device can obtain the heat distribution map of the inner cavity through the infrared sensing module, and determine the first area of ​​solid dry ice and the second area of ​​liquid carbon dioxide according to the heat distribution map, and determine the above-mentioned liquid residual amount according to the area volume of the second area. Of course, if other liquid capacity detection modules are provided in the inner cavity, the corresponding sensing values ​​can also be fed back through the above-mentioned detection modules to determine the liquid residual amount of liquid carbon dioxide in the current inner cavity.

[0068] In some possible implementations, the electronic device may add liquid carbon dioxide to the inner cavity in a preset adding cycle. In this case, if the electronic device detects that the current time reaches the preset adding time, it executes the operation of S201.

[0069] In this embodiment, when the electronic device determines that the preset charging trigger condition is met, it can obtain the state parameters in the current inner cavity to determine the powder processing strategy corresponding to the dry ice powder particles in the air in the current inner cavity according to the state parameters. Among them, the above state parameters include at least the following two parameters, namely, the powder density of the dry ice powder particles in the inner cavity and the real-time propulsion parameter corresponding to the decompression piston for controlling the air pressure in the inner cavity. Optionally, the above real-time propulsion parameter can be the propulsion distance value of the decompression piston, or other characteristic values ​​that can characterize the propulsion of the decompression piston.

[0070] In this embodiment, an air quality detection module can be provided in the inner cavity of the dry ice manufacturing equipment. Optionally, the air quality detection module can be provided on the pressure reducing piston in the inner cavity and move along with the pressure reducing piston in the inner cavity, thereby being able to obtain the powder density of the dry ice powder particles within the area of ​​the pressure reducing piston.

[0071] In some possible implementations, after obtaining the real-time propulsion parameters corresponding to the decompression piston, the electronic device can determine the real-time air pressure value corresponding to the current real-time propulsion parameters based on the mapping relationship between the propulsion distance and the air pressure value, so as to be able to determine the conversion rate of liquid carbon dioxide into solid dry ice. In addition, due to the difference in inner cavity air pressure, the floating distribution of dry ice particles in the air will also be affected, so the degree of influence of dry ice particles on the decompression piston can also be determined based on the air pressure value, thereby improving the accuracy of subsequent model simulations.

[0072] In S202, the powder density and the propulsion parameters are imported into a preset three-dimensional simulation model to determine a powder processing strategy corresponding to the pressure reducing piston; the powder processing strategy includes a calibrated feeding value after adjusting the target feeding value corresponding to the feeding trigger condition.

[0073] In this embodiment, the electronic device can construct a corresponding three-dimensional model according to the device structure of the dry ice making device, and the three-dimensional model can be used to simulate the changes in the inner cavity of the dry ice making device during the process of the decompression piston advancing in the inner cavity of the dry ice making device. In some possible implementations, the electronic device can input the device model of the dry ice making device, and the electronic device can obtain the three-dimensional model corresponding to the device model from the model library, and construct a three-dimensional simulation model for simulating the changes in the inner cavity based on the three-dimensional model.

[0074] In this embodiment, after obtaining the state parameters of the inner cavity of the corresponding dry ice manufacturing equipment, the electronic device can import them into the three-dimensional simulation model corresponding to the dry ice manufacturing equipment to adjust the relevant three-dimensional objects in the three-dimensional simulation model, so as to construct a three-dimensional simulation model after updating the three-dimensional objects to simulate the internal state of the decompression piston when it is pushed in the inner cavity, and then determine the corresponding powder particle processing strategy according to the powder particle distribution in the simulation scene. While being able to eliminate the dry ice particles in the inner cavity, it can also avoid the impact on the generated solid dry ice and reduce energy consumption, thereby improving the production efficiency of dry ice manufacturing.

[0075] In this embodiment, the above-mentioned three-dimensional simulation model can add a corresponding powder distribution model to the simulated inner cavity model of the three-dimensional simulation model according to the powder density of the dry ice powder particles, and adjust the position of the decompression piston model in the three-dimensional simulation model according to the above-mentioned real-time propulsion parameters, so as to construct a three-dimensional simulation model corresponding to the actual inner cavity environment, and then simulate the propulsion process of the decompression piston in the corresponding environment, and judge the use wear coefficient of the decompression piston without eliminating the dry ice powder particles. If the use wear coefficient is greater than or equal to the preset wear threshold, it means that the dry ice powder particles need to be eliminated, determine the powder processing operation, and add the powder processing operation and the corresponding calibration feeding value to the above-mentioned powder processing strategy; on the contrary, if the use wear coefficient is less than the above-mentioned wear threshold, it means that the current dry ice powder particles have little effect on the inner cavity, and there is no need to perform the corresponding powder processing operation, and then generate a powder processing strategy according to the calibration feeding value.

[0076] In S203, after at least one powder processing operation in the powder processing strategy is executed, liquid carbon dioxide is added to the chamber based on the calibration addition value.

[0077] In this embodiment, after the electronic device generates a powder and particle processing strategy, it can identify whether the strategy contains powder and particle processing operations that need to be executed; if the powder and particle processing strategy contains at least one powder and particle processing operation, then after executing one or all of the powder and particle processing operations, the inner cavity is fed with materials. Specifically, the number of powder and particle processing operations that need to be executed can be determined based on actual conditions.

[0078] In some possible implementations, when the powder processing strategy has two or more powder processing operations, the electronic device can obtain the powder density of the inner cavity after completing a powder processing operation. If the powder density after processing is less than or equal to a preset powder threshold, there is no need to perform subsequent powder processing operations; conversely, if the powder density after a powder processing operation is greater than the above-mentioned powder threshold, the next powder processing operation of the execution order is performed, and so on, until the powder processing operation is completed or the powder density after any powder processing operation is less than or equal to the powder threshold.

[0079] In some implementations, the above-mentioned powder processing operations include but are not limited to: powder adsorption, powder dissolution by heating, powder filtration and other operations. The specific powder processing operation selected can be determined according to actual conditions and is not limited here.

[0080] In this embodiment, after the electronic device completes at least one powder processing operation, it can add liquid carbon dioxide to the inner cavity according to the set calibration addition value, so as to continue to realize dry ice manufacturing, thereby ensuring the safety of the dry ice manufacturing process.

[0081] From the above, it can be seen that the embodiment of the present application provides a safe charging method based on a three-dimensional model. When the preset charging trigger conditions are met, the state parameters in the inner cavity of the dry ice making equipment can be obtained. The above state parameters may include the powder density corresponding to the dry ice powder in the inner cavity and the real-time propulsion parameters of the pressure reducing piston in the inner cavity. The electronic device can import the preset three-dimensional simulation model through the state parameters obtained above to simulate the charging process into the inner cavity, determine whether the current dry ice powder will cause component damage, and determine the powder processing strategy for avoiding component damage through the three-dimensional simulation model to eliminate the dry ice powder in the inner cavity; the electronic device can execute the powder processing operation in the powder processing strategy on the inner cavity, and after completing the powder processing operation, add liquid carbon dioxide to the inner cavity of the dry ice making equipment, so as to achieve the purpose of safely charging the dry ice making equipment. Compared with the existing dry ice manufacturing technology, before adding material to the inner cavity of the dry ice manufacturing equipment, the process of adding material to the inner cavity can be simulated by a three-dimensional simulation model, and a matching powder particle processing strategy can be generated to process the dry ice powder particles in the inner cavity before adding material, thereby improving the operating safety of the dry ice manufacturing equipment, avoiding the blockage of the advancement of the pressure reducing piston due to the excessive density of the dry ice powder particles, causing damage to components, and extending the service life of the dry ice manufacturing equipment.

[0082] Figure 3 The specific implementation flow chart of S202 in a safe charging method based on a three-dimensional model provided in the second embodiment of the present application is shown. Figure 3 As shown, relative to Figure 2 In the embodiment, the safe charging method based on a three-dimensional model provided in the embodiment of the present application includes S202 to S2026, which are specifically described as follows:

[0083] In S2021, a preset dry ice particle size distribution function is imported according to the powder particle density to calculate the dry ice particle size distribution information in the cavity; the dry ice particle size distribution function is specifically:

[0084]

[0085] Among them, Gra[i] is the distribution probability corresponding to the i-th particle size in the preset particle size distribution sequence; the particle size distribution sequence is obtained by sorting each particle size based on volume size; BaseGra is the average particle size of the particle size distribution sequence; σ is the preset probability calibration coefficient; e is a natural constant.

[0086] In this embodiment, the electronic device can obtain the powder particle information generated in the inner cavity during the process of generating solid dry ice by throttling and decompression by means of big data statistics. By collecting a large amount of powder particle information in the manufacturing process, the upper limit and lower limit of the particle size of the powder particles in the production process can be determined. The electronic device can also determine the particle size of multiple powder particles by performing big data analysis on the powder particle information collected in the historical production process, thereby obtaining a particle size distribution sequence of dry ice powder particles. Each element in the sequence is arranged according to the particle size, that is, the first element in the above particle size distribution sequence is the lower limit of the powder particle, and the last element in the particle size distribution sequence is the upper limit of the powder particle. The particle sizes of other elements are determined based on the powder particle information in the above historical production process.

[0087] In this embodiment, the electronic device can determine the current residual space volume of the inner cavity according to the real-time propulsion parameter of the decompression piston and the total volume of the inner cavity. The dry ice powder particles are evenly distributed in the residual space, so the electronic device can determine the total amount of dry ice powder particles dispersed in the residual space by calculating the product between the residual space volume and the powder density.

[0088] In this embodiment, the electronic device can calculate the number of powder particles corresponding to each particle size under the preset total amount of powder particles through the above-mentioned dry ice density distribution function. Specifically, the total amount of powder particles is TotalNum, and the distribution probability corresponding to the i-th particle size is Gra[i]. Therefore, the number of powder particles corresponding to this particle size is specifically: Num[i]=TotalNum*Gra[i]. The electronic device can calculate the number of powder particles corresponding to each particle size in the above manner. After determining the number of powder particles corresponding to each particle size, the electronic device can obtain the corresponding dry ice particle size distribution information.

[0089] In S2022, based on the dry ice distribution particle size information, a dry ice distribution model in the cavity is constructed by using the three-dimensional simulation model.

[0090] In this embodiment, after determining the dry ice distribution particle size information corresponding to the dry ice powder particles in the inner cavity, the electronic device can construct a corresponding number of powder particle models through a three-dimensional simulation model according to the number of powder particles corresponding to different particle sizes. After constructing the corresponding number of powder particle models for all particle sizes, they can be evenly distributed in the remaining space in the inner cavity, thereby achieving the purpose of adding powder particle models to the three-dimensional simulation model to realize the construction of the inner cavity environment.

[0091] In S2023, the propulsion position of the simulated piston in the three-dimensional inner cavity model corresponding to the inner cavity is adjusted according to the real-time propulsion parameter.

[0092] In this embodiment, in addition to constructing a dry ice distribution model through a three-dimensional simulation model, the electronic device can also adjust the position of the simulated piston in the three-dimensional inner cavity model according to the real-time propulsion parameters of the decompression piston. Specifically, the electronic device can determine the propulsion distance corresponding to the decompression piston according to the real-time propulsion parameters, and determine the adjustment distance of the simulated piston according to the difference between the propulsion distance and the propulsion distance of the simulated piston in the three-dimensional inner cavity model, and update the propulsion position of the simulated piston in the three-dimensional inner cavity model according to the above adjustment distance.

[0093] In S2024, at least one of the powder and particle processing operations and an expected reduction volume after the powder and particle processing operation are determined based on the dry ice distribution model and the three-dimensional inner cavity model after updating the advancement position of the simulated piston; the expected reduction volume is an expected volume of liquid carbon dioxide obtained after the powder and particle processing operation.

[0094] In this embodiment, after determining the dry ice distribution model corresponding to the dry ice particles and updating the position of the simulated piston in the inner cavity, the electronic device can simulate the corresponding powder processing operations in the inner cavity, such as adsorbing the dry ice particles suspended in the inner cavity, and reducing the adsorbed dry ice particles to liquid carbon dioxide, such as melting the dry ice particles by increasing the temperature or heating, so as to determine the volume corresponding to the conversion of the adsorbed dry ice particles to liquid carbon dioxide, that is, the expected reduction volume mentioned above.

[0095] In some possible implementations, the electronic device can determine the powder processing ratio and the conversion ratio corresponding to the above-mentioned powder processing operation based on the above-mentioned state parameters, and determine the total amount of dry ice powder collected after performing the specified powder processing operation based on the above-mentioned dry ice powder distribution model and the above-mentioned powder processing ratio, and determine the above-mentioned expected volume based on the total amount of dry ice powder collected and the above-mentioned conversion ratio.

[0096] Further, as another embodiment of the present application, the above S2024 specifically includes the following steps:

[0097] In S2024.1, the expected advancement distance of the simulated piston during the feeding process is determined based on the three-dimensional inner cavity model and the updated advancement position.

[0098] In this embodiment, the hardware module for the electronic device to process the dry ice powder particles is specifically a decompression piston, that is, the dry ice powder particles in the air are adsorbed by the adsorption component on the decompression piston. Based on this, when calculating the above-mentioned expected restoration volume, the electronic device needs to simulate the advancement of the decompression piston in the inner cavity through a three-dimensional simulation model. Therefore, the expected advancement distance corresponding to the above-mentioned simulation piston in the feeding process can be determined according to the feeding time corresponding to the feeding process and the advancement speed corresponding to the decompression piston. Among them, since the dry ice manufacturing equipment realizes dry ice manufacturing by throttling and decompression, the advancement speed corresponding to different positions will also be different according to the different positions of the throttle valve in the dry ice manufacturing equipment. Therefore, when determining the above-mentioned expected advancement distance, the advancement speed corresponding to the position can be determined according to the advancement position corresponding to the simulation piston, which can improve the accuracy of determining the expected advancement distance.

[0099] In S2024.2, the amount of covering powder particles within the range of the expected advancement distance is determined based on the dry ice distribution model; the amount of covering powder particles is specifically:

[0100]

[0101] Wherein, TotalC is the amount of covering powder particles; α i is the adsorption probability corresponding to the ith particle size; N is the total number of particle sizes contained in the particle size distribution sequence; S is the area of ​​the inner cavity; Dis is the expected propulsion distance; Destiy is the powder density.

[0102] In this embodiment, the electronic device can calculate the propulsion volume of the decompression piston according to the expected propulsion distance and the area corresponding to the inner cavity. Figure 4 FIG. 2 shows a schematic diagram of the propulsion volume of the pressure reducing piston provided in one embodiment of the present application. Figure 4 As shown, the starting position of the pressure reducing piston is A1, and it moves the preset expected advancement distance Dis during the charging process, that is, reaches the position A2. Therefore, the volume covered during the above advancement process is specifically Dis*S. Since there are dry ice particles in the area, and the distribution probability of dry ice particles can be expressed as Gra[i], the number of particles adsorbed at different particle sizes during the movement can be calculated by the above method, and the number of particles corresponding to all particle sizes can be added to obtain the number of covered particles.

[0103] In S2024.3, the expected reduction volume is determined based on the amount of covering powder particles.

[0104] In this embodiment, the electronic device can perform a reduction process on the collected dry ice particles to reduce the dry ice particles into gaseous carbon dioxide, then liquefy the gaseous carbon dioxide to obtain liquid carbon dioxide, and determine the volume of the liquefied carbon dioxide as the expected reduction volume.

[0105] In the embodiment of the present application, the electronic device adsorbs dry ice particles through the decompression piston, so that the amount of dry ice particles collected can be determined by simulating the advancement process of the decompression piston, which can improve the accuracy of determining the expected restoration volume.

[0106] In S2025, the calibration addition value is determined according to the target addition value and the expected reduction volume.

[0107] In this embodiment, after the electronic device determines the expected reduction volume corresponding to the adsorption of dry ice particles and reduction to liquid carbon dioxide, the part of the adsorbed and reduced liquid carbon dioxide can be used as the raw material for adding. Therefore, the above-mentioned target adding value can be numerically calibrated according to the expected reduction volume. For example, the above-mentioned expected reduction volume can be subtracted from the target adding value to determine the calibrated adding value.

[0108] In S2026, the powder and particle handling strategy is generated based on the calibration dosing value and at least one of the powder and particle handling operations.

[0109] In this embodiment, the electronic device can generate a corresponding powder processing strategy according to the determined powder processing operation and the calibration feed value obtained by the above calculation.

[0110] In some implementations, the electronic device can determine the available powder processing operations based on the modules configured in the decompression piston and the inner cavity. For example, if the decompression piston is configured with an adsorption module, the above-mentioned powder processing operation can be a powder adsorption operation performed by the adsorption module; if a heating module is provided in some areas of the inner cavity, the heating module can be controlled to heat to a preset temperature so that the dry ice powder passing through the corresponding area can be processed, such as gasified and then liquefied to obtain liquid carbon dioxide. The specific powder processing operation used can be set according to the configuration of the hardware module and is not limited here.

[0111] In an embodiment of the present application, the electronic device constructs a dry ice distribution model corresponding to the dry ice powder particles and adjusts the simulated piston in the inner cavity through a three-dimensional simulation model, so as to simulate the amount of powder particles collected when executing the powder processing operation of the dry ice powder particles, and then determine the volume of liquid carbon dioxide obtained after the dry ice powder particles are reduced. Then, precise control of the feeding process can be achieved, thereby improving the accuracy of the dry ice manufacturing process and the utilization rate of the liquid carbon dioxide.

[0112] Figure 5 The specific implementation flow chart of a safe charging method based on a three-dimensional model in S203 provided in the third embodiment of the present application is shown. Figure 5 , relative to Figure 3 In the embodiment, a safe feeding method based on a three-dimensional model provided in this embodiment includes: S2031 to S2033, which are described in detail as follows:

[0113] Furthermore, the outer surface of the pressure reducing piston is provided with an adsorption component; the adsorption component comprises a barrier layer, a filter layer and a storage layer; the filter layer comprises a plurality of filter screens; the aperture of each filter screen corresponds to one of the particle sizes in the particle size distribution sequence.

[0114] For example, Figure 6 FIG. 2 shows a schematic diagram of the structure of a pressure reducing piston provided by an embodiment of the present application. Figure 6 As shown, the decompression piston 61 can move in the inner cavity 60 of the dry ice manufacturing device, so that it can adjust the air pressure in the inner cavity by moving in the inner cavity, so as to achieve the purpose of manufacturing dry ice in a throttling and decompression manner. Among them, the decompression piston includes an adsorption component 62, and the adsorption component 62 is located at the head of the decompression piston. The adsorption component 62 includes the following blocking layer 621, a filter layer 622 and a storage layer 623. The blocking layer 621 is arranged in front of the adsorption component 62. When the adsorption component 62 is not needed to adsorb dry ice particles, the blocking layer 621 is in a closed state, that is, the dry ice particles will be blocked by the blocking layer 621 and cannot contact the filter layer 622 and the storage layer 623, so that filtering and adsorption cannot be achieved.

[0115] When the electronic device needs to adsorb dry ice particles through the adsorption component 62, the barrier layer 621 can be in an open state, and then the dry ice particles can be adsorbed through the filter layer 622 and the storage layer 623. It should be noted that when the barrier layer 621 is closed, the filter layer 622 and the storage layer 623 are in a vacuum state. Therefore, after the barrier layer 621 is opened, due to the pressure difference, the dry ice particles outside can actively move toward the filter layer 622 and the storage layer 623 in the adsorption component 62 with lower air pressure, thereby achieving the purpose of adsorbing the dry ice particles through the adsorption component 62.

[0116] In this embodiment, the filter layer 622 includes a plurality of filter screens, each of which corresponds to a particle size in a particle size distribution sequence, and can separate dry ice powder particles of different particle sizes through the filter screens, thereby enabling subsequent restoration processing. The distribution of the filter screens is based on the order of particle size from large to small, that is, the filter screen with the largest particle size is set at the front position, and the filter screen with the smallest particle size is set at the back position, so that dry ice powder particles of different particle sizes can be separated in descending order.

[0117] The filter screen on the filter layer 622 can heat the adsorbed dry ice, thereby accelerating the efficiency of converting it into liquid carbon dioxide, and the liquefied carbon dioxide can be stored in the storage layer 623. Specifically, the adsorption process of the adsorption component for dry ice particles is specifically operated as follows:

[0118] In S2031, during the process of pushing the decompression piston, the barrier layer in the adsorption component is opened to adsorb the dry ice particles in the inner cavity to the storage layer through the filter layer.

[0119] In this embodiment, before the powder processing operation is performed, the barrier layer is in a closed state, that is, the dry ice powder cannot contact the filter layer and the storage layer. When the dry ice powder needs to be adsorbed, the barrier layer can be opened to achieve contact with the dry ice powder through the filter layer. Since the filter layer includes filter screens corresponding to different particle sizes, dry ice powder of different particle sizes can be separated, and a heating element is provided in the filter screen to increase the temperature of the dry ice powder attached to the filter screen, and then the large-sized dry ice powder is restored to small-sized dry ice powder, and moved to the filter screen of the next layer through the filter screen, and so on, until it moves to the storage layer.

[0120] In S2032, when the decompression piston is pushed to the charging trigger position, the barrier layer is closed and the storage layer is decompressed to reduce the dry ice particles in the storage layer to liquid carbon dioxide.

[0121] In this embodiment, the electronic device can control the decompression piston to advance from the current position to the preset charging trigger position, and when reaching the charging trigger position, open the above-mentioned barrier layer, so as to isolate the inner cavity from the storage layer and the filter layer of the adsorption component again, and perform pressure relief treatment on the above-mentioned area, that is, increase the air pressure in the area, so that the dry ice powder particles can be reduced to liquid carbon dioxide, wherein the pressure value of pressure relief can be set according to actual conditions, specifically the pressure value corresponding to the reduction of dry ice powder particles to liquid carbon dioxide.

[0122] In S2033, the liquid carbon dioxide in the storage layer and the liquid carbon dioxide delivered through the feeding port in an amount equal to the calibration feeding value are added to the inner cavity.

[0123] In this embodiment, since the electronic device has reached the preset feeding trigger position, it can deliver liquid carbon dioxide corresponding to the calibrated feeding value through the feeding port, and simultaneously deliver the liquid carbon dioxide obtained by reducing the dry ice powder in the storage layer to the inner cavity, thereby achieving the reuse of dry ice powder and improving the safety of dry ice manufacturing and the utilization rate of raw materials.

[0124] Figure 7 The specific implementation flow chart of a safe charging method based on a three-dimensional model in S201 provided in the fourth embodiment of the present application is shown. Figure 7 , relative to Figure 2 In the embodiment, a safe feeding method based on a three-dimensional model provided in this embodiment includes: S2011 to S2013, which are described in detail as follows:

[0125] In S2011, the actual volume of the solid dry ice formed in the inner cavity is determined by a sensor in the inner cavity.

[0126] In S2012, the expected dry ice volume is determined according to the current real-time advancement parameter of the decompression piston.

[0127] In S2013, if the difference between the expected dry ice volume and the actual volume is greater than a preset volume threshold, the state parameters of the current cavity interior are obtained.

[0128] In this embodiment, due to the different states of liquid carbon dioxide and solid dry ice, the actual volume of solid dry ice formed in the inner cavity can be determined, for example, by means of infrared sensors and pressure sensors. When the remaining amount of liquid carbon dioxide is sufficient, the difference between the actual volume of solid dry ice and the expected volume is small, so the deviation value between the expected dry ice volume and the actual volume corresponding to the real-time propulsion parameter can be determined. If the deviation value is too large, that is, the difference is greater than the preset volume threshold, it means that the current remaining amount of liquid carbon dioxide is insufficient and a charging operation is required. Therefore, the charging process can be triggered, so that the manufacturing situation of solid dry ice in the inner cavity of the dry ice manufacturing equipment can be monitored in real time, which improves the timeliness of the charging trigger.

[0129] Figure 8 The specific implementation flow chart of a safe charging method based on a three-dimensional model in S203 provided in the fifth embodiment of the present application is shown. Figure 8 , relative to Figure 2-7 In any of the embodiments, the safe material adding method based on a three-dimensional model provided in this embodiment includes in S203: S801 to S803, which are specifically described as follows:

[0130] In S801, each of the powder processing operations is performed in sequence according to the operation order corresponding to each of the powder processing operations in the powder processing strategy;

[0131] In S802, after any powder processing operation is completed, the powder density of the dry ice powder in the inner cavity is determined;

[0132] In S803, if the powder density is less than or equal to a preset density threshold, the subsequent powder processing operation after any of the powder processing operations is stopped, and liquid carbon dioxide is added to the chamber based on the calibration feed value.

[0133] In this embodiment, the above-mentioned powder processing strategy includes multiple powder processing operations, each powder processing operation can be set with a corresponding processing order or processing priority. The electronic device can execute each powder processing operation in sequence according to the processing order and / or processing priority, and after completing each powder processing operation, the real-time powder density of the dry ice powder in the inner cavity can be obtained again; if the powder density after executing the powder processing operation is less than the preset density threshold, it means that there is no need to continue processing the dry ice powder, stop executing the subsequent order of powder processing operations, and execute the feeding process; on the contrary, if the powder density of the inner cavity after executing the powder processing operation is still greater than the above-mentioned density threshold, the next order of powder processing operations is executed.

[0134] In some possible implementations, if after all powder processing operations are performed, the powder density in the inner cavity is still greater than the preset powder threshold, it is recognized that the above-mentioned powder processing operations cannot meet the requirements of safe feeding. At this time, an abnormal prompt information can be generated to prompt the user to deal with the abnormal situation.

[0135] In an embodiment of the present application, the electronic device can perform various powder processing operations in sequence and detect the powder density after the processing is completed, so that the feeding process can be executed when the safety feeding is met, thereby ensuring the safety of feeding while improving the efficiency of dry ice manufacturing.

[0136] Fig. 9 The specific implementation flow chart of a safe charging method based on a three-dimensional model in S203 provided in the sixth embodiment of the present application is shown. Fig. 9 , relative to Figure 2-7 In any of the embodiments, in the safe feeding method based on a three-dimensional model provided in this embodiment, the outer surface of the pressure reducing piston further includes a heating component; the above S203 includes: S901-S902, which are specifically described as follows:

[0137] In S901, based on the temperature rise coefficient in the powder processing strategy, the heating component is controlled to operate at a power corresponding to the temperature rise coefficient to reduce the dry ice powder within a preset range into liquid carbon dioxide;

[0138] In S902, the heating component is turned off after a preset heating time, and the reduced liquid carbon dioxide and the liquid carbon dioxide added in an amount equal to the calibration addition value are decompressed to obtain solid dry ice.

[0139] In this embodiment, in addition to adsorbing dry ice particles and reducing them to liquid carbon dioxide through the adsorption component, the electronic device can also reduce dry ice particles to liquid carbon dioxide by heating. Specifically, by starting the heating component on the surface of the pressure reducing piston, the temperature of the surrounding area can be increased during the movement of the pressure reducing piston in the inner cavity, and then the temperature of the dry ice particles can be increased to reduce the dry ice particles to the corresponding liquid carbon dioxide. Then, after processing the dry ice particles, the operation of adding liquid carbon dioxide can be performed, and throttling and decompression are performed based on the liquid carbon dioxide obtained from the reduction of the dry ice particles and the added liquid carbon dioxide to continue to produce dry ice.

[0140] In this embodiment, Fig.10 The structure diagram of a safe feeding device based on a three-dimensional model provided by an embodiment of the present application is shown. The safe feeding device based on a three-dimensional model includes various units for executing Figure 2 The steps implemented by the first device in the corresponding embodiment. For details, please refer to Figure 2 and Figure 2 For the convenience of explanation, only the parts related to this embodiment are shown.

[0141] See also Fig.10 , a safe feeding device based on a three-dimensional model, including:

[0142] A charging trigger unit 101 is used to obtain the current state parameters of the inner cavity if the preset charging trigger condition is met; the state parameters include the powder density of the dry ice powder particles and the real-time propulsion parameters of the decompression piston in the cavity;

[0143] A powder processing strategy determination unit 102 is used to import the powder density and the propulsion parameter into a preset three-dimensional simulation model to determine the powder processing strategy corresponding to the decompression piston; the powder processing strategy includes a calibrated feeding value after adjusting the target feeding value corresponding to the feeding trigger condition;

[0144] The feeding execution unit 103 is configured to add liquid carbon dioxide to the chamber based on the calibrated feeding value after executing at least one powder processing operation in the powder processing strategy.

[0145] It should be understood that Fig.10 In the structural block diagram of the device shown, each module is used to execute Figures 2 to 9 The steps in the corresponding embodiments, and for Figures 2 to 9 Each step in the corresponding embodiment has been explained in detail in the above embodiment. Figures 2 to 9 as well as Figures 2 to 9 The relevant descriptions in the corresponding embodiments are not repeated here.

[0146] Fig.11 is a structural block diagram of an electronic device provided by another embodiment of the present application. Fig.11 As described above, the electronic device 1100 of this embodiment includes: a processor 1110, a memory 1120, and a computer program 1130 stored in the memory 1120 and executable by the processor 1110, such as a program of a safe charging method based on a three-dimensional model. When the processor 1110 executes the computer program 1130, the steps in each embodiment of the safe charging method based on a three-dimensional model are implemented, such as Figure 2 Alternatively, the processor 1110 executes the computer program 1130 to implement the above Fig. 9 The functions of each module in the corresponding embodiment are, for example, Fig.10 For details on the functions of the units 101 to 103, please refer to Fig. 9 Related description in the corresponding embodiment.

[0147] Exemplarily, the computer program 1130 may be divided into one or more modules, one or more modules are stored in the memory 1120, and are executed by the processor 1110 to complete the present application. One or more modules may be a series of computer program instruction segments that can complete specific functions, and the instruction segments are used to describe the execution process of the computer program 1130 in the electronic device 1100. For example, the computer program 1130 may be divided into various unit modules, and the specific functions of each module are as described above.

[0148] The electronic device 1100 may include, but is not limited to, a processor 1110 and a memory 1120. Those skilled in the art will appreciate that Fig.11 It is only an example of the electronic device 1100 and does not constitute a limitation of the electronic device 1100. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the electronic device may also include input and output devices, network access devices, buses, etc.

[0149] The processor 1110 may be a central processing unit, or other general-purpose processors, digital signal processors, application-specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0150] The memory 1120 may be an internal storage unit of the electronic device 1100, such as a hard disk or memory of the electronic device 1100. The memory 1120 may also be an external storage device of the electronic device 1100, such as a plug-in hard disk, a smart memory card, a flash memory card, etc. equipped on the electronic device 1100. Furthermore, the memory 1120 may also include both an internal storage unit of the electronic device 1100 and an external storage device.

[0151] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A safe feeding method based on a three-dimensional model, characterized in that: include: If the preset charging trigger condition is met, the state parameters of the current inner cavity are obtained; the state parameters include the powder density of the dry ice powder particles and the real-time propulsion parameters of the decompression piston in the cavity; The powder density and the propulsion parameters are imported into a preset three-dimensional simulation model to determine a powder processing strategy corresponding to the pressure reducing piston; the powder processing strategy includes a calibrated feeding value after adjusting the target feeding value corresponding to the feeding trigger condition; After at least one powder processing operation in the powder processing strategy is executed, liquid carbon dioxide is added to the chamber based on the calibration addition value.

2. The safe feeding method according to claim 1, characterized in that: The step of importing the powder density and the propulsion parameters into a preset three-dimensional simulation model to determine a powder processing strategy corresponding to the pressure reducing piston includes: A preset dry ice particle size distribution function is introduced according to the powder particle density to calculate the dry ice particle size distribution information in the cavity; the dry ice particle size distribution function is specifically: Wherein, Gra[i] is the distribution probability corresponding to the i-th particle size in the preset particle size distribution sequence; the particle size distribution sequence is obtained by sorting each particle size based on volume size; BaseGra is the average particle size of the particle size distribution sequence; σ is the preset probability calibration coefficient; e is a natural constant; Based on the dry ice distribution particle size information, constructing a dry ice distribution model in the cavity through the three-dimensional simulation model; Adjusting the propulsion position of the simulated piston in the three-dimensional inner cavity model corresponding to the inner cavity by using the real-time propulsion parameter; Determine at least one of the powder processing operations and an expected reduction volume after the powder processing operation according to the dry ice distribution model and the three-dimensional inner cavity model after updating the advancement position of the simulated piston; the expected reduction volume is an expected volume of liquid carbon dioxide obtained after the powder processing operation; Determining the calibration addition value according to the target addition value and the expected reduction volume; The powder handling strategy is generated based on the calibration dosing value and at least one of the powder handling operations.

3. The safe feeding method according to claim 2, characterized in that: The determining, based on the dry ice distribution model and the three-dimensional inner cavity model after updating the advancement position of the simulated piston, at least one of the powder and particle processing operations and an expected reduction volume after the powder and particle processing operation comprises: Determining an expected advancement distance of the simulated piston during the feeding process according to the three-dimensional inner cavity model and the updated advancement position; The amount of covering powder particles within the range of the expected advancement distance is determined based on the dry ice distribution model; the amount of covering powder particles is specifically: Wherein, TotalC is the amount of covering powder particles; α i is the adsorption probability corresponding to the i-th particle size; N is the total number of particle sizes contained in the particle size distribution sequence; S is the area of ​​the inner cavity; Dis is the expected propulsion distance; The expected reduction volume is determined according to the amount of covering powder particles.

4. The safe feeding method according to claim 2, characterized in that: The outer surface of the pressure reducing piston is provided with an adsorption component; the adsorption component comprises a barrier layer, a filter layer and a storage layer; the filter layer comprises a plurality of filter screens; the aperture of each filter screen corresponds to one of the particle sizes in the particle size distribution sequence; After executing and completing at least one powder processing operation in the powder processing strategy, adding liquid carbon dioxide to the chamber based on the calibration addition value comprises: In the process of advancing the decompression piston, the barrier layer in the adsorption component is opened to adsorb the dry ice particles in the inner cavity to the storage layer through the filter layer; When the decompression piston is pushed to the charging trigger position, the barrier layer is closed and the storage layer is decompressed to reduce the dry ice particles in the storage layer to liquid carbon dioxide; The liquid carbon dioxide in the storage layer and the liquid carbon dioxide in an amount equal to the calibration addition value delivered through the addition port are added to the inner cavity.

5. The safe feeding method according to claim 1, characterized in that: If the preset feeding trigger condition is met, the current state parameters of the inner cavity are obtained, including: Determine the actual volume of the solid dry ice formed in the inner cavity by a sensor in the inner cavity; Determining the expected dry ice volume according to the current real-time advancement parameter of the decompression piston; If the difference between the expected dry ice volume and the actual volume is greater than a preset volume threshold, the current state parameter of the inner cavity is obtained.

6. The safe feeding method according to any one of claims 1 to 5, characterized in that: After executing and completing at least one powder processing operation in the powder processing strategy, adding liquid carbon dioxide to the chamber based on the calibration addition value comprises: Execute each of the powder processing operations in sequence according to the operation order corresponding to each of the powder processing operations in the powder processing strategy; After completing any powder processing operation, determining the powder density of the dry ice powder in the inner cavity; If the powder density is less than or equal to a preset density threshold, the subsequent powder processing operation after any of the powder processing operations in the operation sequence is stopped, and liquid carbon dioxide is added to the chamber based on the calibration addition value.

7. The method according to any one of claims 1 to 5, characterized in that: The outer surface of the pressure reducing piston also includes a heating component; After executing and completing at least one powder processing operation in the powder processing strategy, adding liquid carbon dioxide to the chamber based on the calibration addition value, further comprising: Based on the temperature rise coefficient in the powder processing strategy, controlling the heating component to operate at a power corresponding to the temperature rise coefficient to reduce the dry ice powder within a preset range into liquid carbon dioxide; After a preset heating time, the heating component is turned off, and the reduced liquid carbon dioxide and the liquid carbon dioxide added in an amount equal to the calibration addition value are subjected to a decompression treatment to obtain solid dry ice.

8. A safe feeding device based on a three-dimensional model, characterized in that: include: A charging trigger unit, used to obtain the current state parameters of the inner cavity if the preset charging trigger conditions are met; the state parameters include the powder density of the dry ice powder particles and the real-time propulsion parameters of the decompression piston in the cavity; a powder processing strategy determination unit, configured to import the powder density and the propulsion parameter into a preset three-dimensional simulation model to determine a powder processing strategy corresponding to the pressure reducing piston; the powder processing strategy includes a calibrated feeding value after adjusting the target feeding value corresponding to the feeding trigger condition; A feeding execution unit is used to add liquid carbon dioxide to the chamber based on the calibration feeding value after executing at least one powder processing operation in the powder processing strategy.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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