A method and apparatus for disinfecting an aviation face mask

Abstract

This invention relates to a method and apparatus for disinfecting aircraft face shields. It dynamically calculates the initial condensation threshold of the disinfecting gas based on ambient temperature and humidity using the Clausius-Clapeyron equation, and predicts the gas phase transition boundary by combining this with the internal gap size of the face shield. When the gas concentration exceeds a safe range, it automatically reduces to form a first gas concentration to prevent condensation droplet formation. Subsequently, a multilayer perceptron model is used to process the diffusion rate and gap size at this concentration, accurately predicting the target penetration depth and the required basic operation time. If this time causes the face shield material to age to a critical value, it is further optimized to a second gas concentration, and the target operation time for covering dead corners is recalculated. This invention achieves intelligent balance control between disinfecting gas concentration and operation time, ensuring thorough disinfection of the internal structural gaps of the face shield while effectively avoiding equipment damage caused by gas condensation and material aging problems due to prolonged operation.

Description

Technical Field

[0001] This invention relates to the field of aviation face mask cleaning technology, and in particular to a method and apparatus for disinfecting aviation face masks. Background Technology

[0002] As life support equipment that protects the lives of crew members and passengers, thorough disinfection during routine maintenance of aviation face shields is a key step in preventing the spread of germs and ensuring flight safety.

[0003] Current conventional methods of liquid immersion or surface wiping can only treat the surface of the equipment, making it difficult to reach the deep parts of the equipment. Furthermore, liquid residue can easily be left in crevices, leading to rust or malfunction of components.

[0004] Aviation face shields contain extremely narrow and convoluted internal structures, including breathing valves and oxygen supply interfaces, which cannot be penetrated by conventional methods. Complete coverage must be achieved through the diffusion of gaseous molecules. However, the penetration process of gaseous molecules is highly susceptible to interference from ambient temperature and humidity. When temperature and humidity conditions are unstable, gaseous molecules undergo state changes as they enter these complex channels. For example, in actual maintenance operations, when disinfectant gas enters the tiny gaps of the breathing valve, if the ambient humidity is too high and the temperature is mismatched, the gas will prematurely condense into droplets at the valve's edge. This not only acts like a wall, preventing further penetration of the disinfectant gas and leaving internal dead zones uncleaned, but also triggers another thorny problem.

[0005] To overcome this penetration obstruction, the conventional approach is often to directly increase the concentration of the disinfectant gas or extend the operation time. However, this approach ignores the material properties of the mask itself. Excessive concentration and prolonged operation can directly damage the structure of rubber or polymer plastics, causing the mask to age and become brittle.

[0006] Therefore, how to accurately control the ambient temperature and humidity to ensure the effective penetration of gaseous molecules into complex structures without damaging the mask material, and how to set reasonable concentration limits and operation time, have become key issues in achieving safe and efficient disinfection of aviation masks. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a method and device for disinfecting aviation face masks, which can solve the problem that general aviation face masks are difficult to disinfect by precisely controlling the ambient temperature and humidity to ensure the effective penetration of gaseous molecules in complex structures.

[0008] To solve the above-mentioned technical problems, the technical solution of the present invention is: a method for disinfecting aviation face masks, the innovation of which is: specifically including: S101: Obtain the ambient temperature T and ambient humidity RH of the space where the aviation mask is located, calculate the saturated water vapor pressure using the Clausius-Clapeyron equation, and determine the initial condensation threshold by combining the temperature and humidity data. S102: Determine the gas state change boundary for the disinfectant gas to undergo phase change inside the structural gap based on the initial condensation threshold and the size of the structural gap inside the aviation mask. S103: If the gas state change boundary exceeds the pre-established safety boundary, reduce the gas concentration input to the disinfection equipment to obtain a first gas concentration that avoids the formation of condensate droplets; S104: Obtain the diffusion rate corresponding to the first gas concentration inside the structural gap, input the diffusion rate and the size of the structural gap into the multilayer perceptron model, and obtain the target penetration depth of the disinfectant gas inside the aviation mask. S105: Based on the target penetration depth and the concentration of the first gas, calculate the diffusion time of the disinfectant gas inside the structural gap, and determine the basic operation time corresponding to reaching the target penetration depth. S106: If the material condition corresponding to the surface of the aircraft mask reaches the preset aging threshold due to the duration of basic operation, the first gas concentration is reduced again to obtain the second gas concentration. S107: Based on the second gas concentration and the target penetration depth, recalculate the time it takes for the disinfectant gas to cover the dead corners inside the aircraft mask to obtain the target operation time; S108: Based on the target operation time and the concentration of the second gas, generate operation instructions for the aviation mask disinfection equipment and output disinfection control signals for the internal structure of the aviation mask.

[0009] An innovative device for disinfecting aircraft face shields includes a frame assembly, a disinfection box, an atomizing assembly, a heating module, a drug storage module, a fan module, a drug return module, and a condensation drying module. The frame assembly is in the shape of a cuboid frame, and the disinfection box is set inside the frame assembly; the top of the disinfection box is connected to a heating module through a pipe, the heating module heats and vaporizes the atomized disinfectant liquid, and the vaporized disinfectant gas is blown into the disinfection box through a fan module; the bottom of the disinfection box is connected to a condensation and drying module through a pipe, which is used to liquefy and recover the gaseous disinfectant liquid. The atomizing component is housed within the frame assembly, and its input end is connected to the drug storage module via a pipe. The drug storage module contains disinfectant. A pump installed on the drug storage module draws the disinfectant into the atomizing component for atomization. The output end of the atomizing component is connected to the heating module via a pipe. The output end of the fan module is connected to the atomizing component and the heating module through a pipe, so as to blow the atomized disinfectant into the heating module and the heated and vaporized disinfectant into the disinfection box, respectively. The medicine return module is connected to the condensation and drying module via a pipeline, and is used to recycle the liquefied disinfectant solution after disinfection.

[0010] The advantages of this invention are: 1) This invention solves the technical challenge of achieving deep penetration disinfection of disinfectant gas within the complex structure and gaps of face shields while avoiding condensation damage and material aging. The invention uses the Clausius-Clapeyron equation to dynamically calculate the initial condensation threshold of the disinfectant gas based on ambient temperature and humidity. Combined with the size of the gaps inside the face shield, it predicts the gas phase transition boundary. When the threshold is exceeded, the gas concentration is automatically reduced to form a first gas concentration to prevent condensation droplet formation. Subsequently, a multilayer perceptron model is used to process the diffusion rate and gap size at this concentration, accurately predicting the target penetration depth and the required basic operation time. If this time causes the face shield material to age to a critical value, the concentration is further optimized to a second gas concentration, and the target operation time for covering the dead corners is recalculated. This invention achieves intelligent balance control of disinfectant gas concentration and operation time, ensuring thorough disinfection of the gaps inside the face shield while effectively avoiding equipment damage caused by gas condensation and material aging due to prolonged operation, significantly improving the safety and reliability of aviation face shield disinfection operations. Attached Figure Description

[0011] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0012] Figure 1 This is a flowchart of a method for disinfecting aviation face masks according to the present invention.

[0013] Figure 2 This is a structural diagram of an aviation face mask disinfection device according to the present invention.

[0014] Figure 3 This is another structural diagram of an aviation face mask disinfection device according to the present invention. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0017] like Figure 1The method for disinfecting an aircraft face mask shown includes the following steps: S101: Obtain the ambient temperature T and ambient humidity RH of the space where the aircraft face mask is located, calculate the saturated water vapor pressure using the Clausius-Clapeyron equation, and determine the initial condensation threshold by combining the temperature and humidity data. S101: Obtain the ambient temperature T and humidity RH of the space where the aviation mask is located; calculate the saturated water vapor pressure Ps at the current temperature according to the Clausius-Clapeyron equation, the formula is Ps=6.1078×exp[(17.27×T) / (T+237.3)], where T is in degrees Celsius and Ps is in hectopascals; calculate the current water vapor partial pressure Pa=RH×Ps / 100 based on the actual relative humidity; and calculate the water vapor partial pressure Pa=RH×Ps / 100 based on the solubility characteristics of water-soluble components in the disinfection gas. The critical relative humidity threshold for condensation was set between 85% and 95%. When the ambient temperature was 20℃ and the relative humidity was 80%, the calculated saturated water vapor pressure was 23.4 hPa, the actual water vapor partial pressure was 18.7 hPa, and the water vapor partial pressure range corresponding to the condensation threshold was 19.9 to 22.2 hPa. By comparing the actual water vapor partial pressure with the condensation threshold range, the initial condensation threshold of the disinfectant gas in the current environment was determined to be 19.9 hPa, which was used as the benchmark value for subsequent condensation warnings.

[0018] S102: Based on the initial condensation threshold and the size of the structural gaps inside the aviation mask, determine the gas state change boundary where the disinfectant gas undergoes a phase change inside the structural gaps.

[0019] S102: Obtain the saturated vapor pressure P0 corresponding to the initial condensation threshold, the cross-sectional area A and length L corresponding to the structural gap size, and combine the dynamic viscosity μ of the sterilizing gas and the material permeability coefficient k, the first permeability K = kA / μL; obtain the first pressure difference ΔP1 of the sterilizing gas at both ends of the structural gap, and determine whether the first pressure difference reaches the condensation pressure threshold Pc by comparing the first pressure difference ΔP1 with the condensation pressure threshold Pc corresponding to the initial condensation threshold, wherein the condensation pressure threshold Pc is set to 0.8 standard atmospheres; if the first pressure difference reaches the condensation pressure threshold, obtain the first flow velocity v1 and the current temperature T1 of the sterilizing gas, and calculate the first phase transition temperature Tph of the sterilizing gas using the Clausius-Clapeyron equation combined with the first flow velocity and pressure difference data; obtain the first contact angle θ1 of the surface of the structural gap, and calculate the first phase transition temperature Tph of the sterilizing gas based on the liquid surface tension coefficient γ corresponding to the first phase transition temperature. LV The first effective tension value γ is calculated using Young's equation based on the first contact angle θ1. eff , The current saturated vapor pressure Ps and the actual vapor pressure Pa of the disinfectant gas are obtained, and the first liquefaction rate η of the disinfectant gas is calculated, where η = Pa / Ps. The first liquefaction rate η is compared with a preset liquefaction threshold η.th The process involves determining whether the first liquefaction rate exceeds a preset liquefaction threshold, which is set to 0.85. If the first liquefaction rate exceeds the preset liquefaction threshold, the first adhesion work Wa of the disinfectant gas molecules on the surface of the gap is obtained. Combined with the first liquefaction rate η and the temperature T1, the critical gas state value ΔGc of the disinfectant gas within the structural gap is calculated using the Gibbs free energy change formula, where ΔGc = -Wa × η + RT1 × ln(η / η) th ), where R is the gas constant.

[0020] S103: If the gas state change boundary exceeds the pre-established safety boundary, reduce the gas concentration input to the disinfection equipment to obtain a first gas concentration that avoids the formation of condensate droplets.

[0021] S103: Obtain the status value and safety line during the operation of the disinfection equipment. The status value refers to the real-time concentration monitoring data of the disinfection gas inside the equipment, in mg / m³. The safety line is the upper and lower threshold values ​​of the concentration determined in the previous steps based on the disinfection level and equipment volume, with a lower limit of 100 mg / m³ and an upper limit of 400 mg / m³. Compare the status value with the safety line to determine whether the status value exceeds the safety line range. If the status value exceeds the safety line, obtain the current input concentration value C of the disinfection equipment and the saturation S corresponding to that concentration. Process C and S based on the Magnus dew point formula to obtain the first dew point value Td, in °C. Then obtain the humidity value H inside the disinfection equipment, in g / m³, and calculate the first condensation value based on the difference between the saturated water vapor content Hs corresponding to Td and H. The quantity W, i.e., W = Hs - H, is taken as 0 when Hs is less than or equal to H, and the unit is g / m³; a preset condensation threshold is obtained, with a value of 0.5 g / m³, and W is compared with this threshold to determine whether W is greater than the preset condensation threshold; if W is greater than the preset condensation threshold, the evaporation rate E of the disinfectant gas is obtained, with the unit being g / (m³·s), and the first diffusion rate D is obtained by multiplying the net condensation rate by the characteristic diffusion coefficient K of the equipment, i.e., D = K × WE, where K is taken as 0.02 / s, and the unit of D is g / (m³·s); the flow rate Q of the disinfectant gas is obtained, with the unit being m³ / s, and converted in combination with the volume V of the equipment cavity, and the first gas concentration Ca is obtained by weighted conversion of Q and D, i.e., Ca = a × Q / V + b × D, where a and b are weighting coefficients, taken as 0.6 and 0.4 respectively, and the unit of Ca is mg / m³.

[0022] S104: Obtain the diffusion rate corresponding to the first gas concentration inside the structural gap, input the diffusion rate and the structural gap size into the multilayer perceptron model, and obtain the target penetration depth of the disinfectant gas inside the aviation mask.

[0023] S105: Based on the target penetration depth and the concentration of the first gas, calculate the diffusion time of the disinfectant gas inside the structural gap, and determine the basic operation time corresponding to reaching the target penetration depth.

[0024] S106: If the material condition corresponding to the surface of the aircraft mask reaches the preset aging threshold due to the duration of basic operation, the first gas concentration is reduced again to obtain the second gas concentration.

[0025] S106: Obtain the initial transmittance of the basic working length and the aircraft mask surface. Process the basic working length and initial transmittance through ratio calculation to obtain the material state corresponding to the mask surface. Obtain the initial roughness of the mask surface. Process the material state and initial roughness using a random forest model to obtain the current aging value. Obtain a preset critical value. Compare the current aging value with the preset critical value to determine whether the current aging value is greater than the preset critical value. If the current aging value is greater than the preset critical value, process the current aging value and the preset critical value through difference calculation to determine the aging excess amount. Obtain a preset attenuation rate. Process the aging excess amount and the preset attenuation rate through product calculation to obtain the target concentration difference. Obtain the first gas concentration. Process the first gas concentration and the target concentration difference through difference calculation to obtain the second gas concentration. Obtain the initial deformation rate of the mask surface. Process the second gas concentration and the initial deformation rate through weighted summation to determine the final working length.

[0026] S107: Based on the second gas concentration and the target penetration depth, recalculate the time it takes for the disinfectant gas to cover the dead corners inside the aircraft mask to obtain the target operation time; S108: Based on the target operation time and the concentration of the second gas, generate operation instructions for the aviation mask disinfection equipment and output disinfection control signals for the internal structure of the aviation mask.

[0027] S108: Obtain the target operating length and the second gas concentration value. Process the target operating length and concentration value through multiplication to obtain the basic injection volume. Obtain the internal structure diagram of the aircraft mask and extract geometric parameters such as pipe diameter D, bending angle α, and length L from the structure diagram. Calculate the resistance coefficient ζ when the fluid passes through the structure based on the basic injection volume Q and the geometric parameters. The product of the resistance coefficient ζ and the basic injection volume Q yields the internal resistance value R. Based on the internal resistance value R, a decision tree model is used to process the internal resistance value. The decision tree model uses the internal resistance value R, pipe diameter D, and bending angle α as input features. The node partitioning rules of the decision tree, trained based on historical experimental data, are as follows: when R is less than 50 Pa, it is divided into a left subtree corresponding to a 15-degree injection angle; when R is greater than or equal to 50 Pa and less than 120 Pa, it is divided into a middle subtree corresponding to a 30-degree injection angle; when R is greater than or equal to 120 Pa, it is divided into a right subtree corresponding to a 45-degree injection angle. Determine the target injection angle θ. Obtain the preset initial flow rate value F. Calculate the dynamic pressure difference based on the target injection angle θ and the initial flow rate value F. The system obtains a preset pressure threshold of 80 Pa, compares the dynamic pressure difference ΔP with the preset pressure threshold, and determines whether the dynamic pressure difference is greater than the preset pressure threshold. If the dynamic pressure difference is greater than the preset pressure threshold, it performs a difference operation to obtain a pressure compensation amount C. Based on the pressure compensation amount C, it performs a weighted summation operation to obtain a control value V. Based on the control value V, it generates an equipment instruction set. When V is less than 100, the instruction set code is 01, indicating low-speed injection; when V is between 100 and 200, the instruction set code is 02, indicating medium-speed injection; and when V is greater than 200, the instruction set code is 03, indicating high-speed injection. The system obtains a preset signal conversion rule, performs rule matching to process the equipment instruction set and the signal conversion rule, and outputs a disinfection control signal.

[0028] A disinfection device for aviation face masks includes a frame assembly 1, a disinfection box 2, an atomizing assembly 3, a heating module 4, a drug storage module 5, a fan module 6, a drug return module 7, and a condensation drying module 8.

[0029] The frame assembly 1 is in the shape of a cuboid frame, and the disinfection box 2 is set inside the frame assembly 1. The top of the disinfection box 2 is connected to the heating module 4 through a pipe. The heating module 4 heats and vaporizes the atomized disinfectant liquid, and the vaporized disinfectant gas is blown into the disinfection box 2 through the fan module 6. The bottom of the disinfection box 2 is connected to the condensation and drying module 8 through a pipe, which is used to liquefy and recover the gaseous disinfectant liquid.

[0030] The atomizing component 3 is set inside the frame component 1, and the input end of the atomizing component 3 is connected to the medicine storage module 5 through a pipe; the medicine storage module 5 contains disinfectant; the disinfectant is drawn into the atomizing component 3 for atomization by a pump installed on the medicine storage module 5; the output end of the atomizing component 3 is connected to the heating module 4 through a pipe.

[0031] The output end of the fan module 6 is connected to the atomizing component 3 and the heating module 4 through pipes, so as to blow the atomized disinfectant into the heating module 4 and the heated and vaporized disinfectant into the disinfection box 2, respectively.

[0032] The return module 7 is connected to the condensation and drying module 8 via a pipeline, and is used to recycle the liquefied disinfectant solution after disinfection.

[0033] Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed.

Claims

1. A method for disinfecting aircraft face shields, characterized in that: Specifically, it includes: S101: Obtain the ambient temperature T and ambient humidity RH of the space where the aviation mask is located, calculate the saturated water vapor pressure using the Clausius-Clapeyron equation, and determine the initial condensation threshold by combining the temperature and humidity data. S102: Determine the gas state change boundary for the disinfectant gas to undergo phase change inside the structural gap based on the initial condensation threshold and the size of the structural gap inside the aviation mask. S103: If the gas state change boundary exceeds the pre-established safety boundary, reduce the gas concentration input to the disinfection equipment to obtain a first gas concentration that avoids the formation of condensate droplets; S104: Obtain the diffusion rate corresponding to the first gas concentration inside the structural gap, input the diffusion rate and the structural gap size into the multilayer perceptron model, and obtain the target penetration depth of the disinfectant gas inside the aviation mask. S105: Based on the target penetration depth and the concentration of the first gas, calculate the diffusion time of the disinfectant gas inside the structural gap, and determine the basic operation time corresponding to reaching the target penetration depth. S106: If the material condition corresponding to the surface of the aircraft mask reaches the preset aging threshold due to the duration of basic operation, the first gas concentration is reduced again to obtain the second gas concentration. S107: Based on the second gas concentration and the target penetration depth, recalculate the time it takes for the disinfectant gas to cover the dead corners inside the aircraft mask to obtain the target operation time; S108: Based on the target operation time and the concentration of the second gas, generate operation instructions for the aviation mask disinfection equipment and output disinfection control signals for the internal structure of the aviation mask.

2. The method for disinfecting aircraft face masks according to claim 1, characterized in that: S101: Obtain the ambient temperature T and ambient humidity RH of the space where the aviation mask is located; calculate the saturated water vapor pressure Ps at the current temperature according to the Clausius-Clapeyron equation, with the formula Ps=6.1078×exp[(17.27×T) / (T+237.3)], where T is in degrees Celsius and Ps is in hectopascals; calculate the current water vapor partial pressure Pa=RH×Ps / 100 based on the actual relative humidity; set the critical relative humidity threshold for condensation to be between 85% and 95% based on the solubility characteristics of water-soluble components in the disinfectant gas; determine the initial condensation threshold of the disinfectant gas in the current environment by comparing the actual water vapor partial pressure with the condensation threshold range, which serves as the benchmark value for subsequent condensation warnings.

3. The method for disinfecting aircraft face masks according to claim 1, characterized in that: S102: Obtain the saturated vapor pressure P0 corresponding to the initial condensation threshold, the cross-sectional area A and length L corresponding to the structural gap size, and combine the dynamic viscosity μ of the disinfectant gas and the material permeability coefficient k to obtain the first permeability K = kA / μL; obtain the first pressure difference ΔP1 of the disinfectant gas at both ends of the structural gap, and determine whether the first pressure difference reaches the condensation pressure threshold Pc by comparing the first pressure difference ΔP1 with the condensation pressure threshold Pc corresponding to the initial condensation threshold, wherein the condensation pressure threshold Pc is set to 0.8 standard atmospheres; if the first pressure difference reaches the condensation pressure threshold, obtain the first flow velocity v1 and the current temperature T1 of the disinfectant gas, and calculate the first phase transition temperature Tph of the disinfectant gas using the Clausius-Clapeyron equation combined with the first flow velocity and pressure difference data; Obtain the first contact angle θ1 of the surface of the structural gap, and based on the liquid surface tension coefficient γ corresponding to the first phase transition temperature. LV The first effective tension value γ is calculated using Young's equation based on the first contact angle θ1. eff , The current saturated vapor pressure Ps and the actual vapor pressure Pa of the disinfectant gas are obtained, and the first liquefaction rate η of the disinfectant gas is calculated, where η = Pa / Ps. The first liquefaction rate η is compared with a preset liquefaction threshold η. th The process involves determining whether the first liquefaction rate exceeds a preset liquefaction threshold, which is set to 0.

85. If the first liquefaction rate exceeds the preset liquefaction threshold, the first adhesion work Wa of the disinfectant gas molecules on the surface of the gap is obtained. Combined with the first liquefaction rate η and the temperature T1, the critical gas state value ΔGc of the disinfectant gas within the structural gap is calculated using the Gibbs free energy change formula, where ΔGc = -Wa × η + RT1 × ln(η / η) th ), where R is the gas constant.

4. The method for disinfecting aircraft face masks according to claim 1, characterized in that: S103: Acquire the status value and safety line during the operation of the disinfection equipment. The status value refers to the real-time concentration monitoring data of the disinfection gas inside the equipment, in mg / m³. The safety line is the upper and lower threshold values ​​of the concentration determined in the previous steps based on the disinfection level and equipment volume, with a lower limit of 100 mg / m³ and an upper limit of 400 mg / m³. Compare the status value with the safety line to determine whether the status value exceeds the safety line range. If the status value exceeds the safety line, acquire the current input concentration value C of the disinfection equipment and the saturation S corresponding to that concentration. Process C and S based on the Magnus dew point formula to obtain the first dew point value Td, in °C. Then acquire the humidity value H inside the disinfection equipment, in g / m³, and calculate the first condensate based on the difference between the saturated water vapor content Hs corresponding to Td and H. The condensation rate W, i.e., W = Hs - H, is 0 when Hs is less than or equal to H, and the unit is g / m³. A preset condensation threshold of 0.5 g / m³ is obtained. W is compared with this threshold to determine if W is greater than the preset condensation threshold. If W is greater than the preset condensation threshold, the evaporation rate E of the disinfectant gas is obtained, in g / (m³·s). The first diffusion rate D is obtained by multiplying the net condensation rate by the equipment characteristic diffusion coefficient K, i.e., D = K × WE, where K is 0.02 / s, and D is in g / (m³·s). The flow rate Q of the disinfectant gas is obtained, in m³ / s, and converted using the equipment cavity volume V. The first gas concentration Ca is obtained by weighted calculation of Q and D, i.e., Ca = a × Q / V + b × D, where a and b are weighting coefficients, respectively, and are 0.6 and 0.4, and Ca is in mg / m³.

5. The method for disinfecting aircraft face masks according to claim 1, characterized in that: S105: Obtain the target penetration depth and the first gas concentration value, process the target penetration depth and the first concentration value through ratio calculation to obtain the initial diffusion value; obtain the gap width of the structural gap, process the initial diffusion value and the gap width through product calculation to determine the gap resistance value; Obtain a preset resistance threshold, compare the gap resistance value with the preset resistance threshold, and determine whether the gap resistance value is greater than the preset resistance threshold. If the gap resistance value is greater than the preset resistance threshold, obtain the ambient temperature value, and process the gap resistance value and the ambient temperature value through difference calculation to obtain the target diffusion value. A support vector machine model is used to process the target diffusion value and the first concentration value to obtain the basic operation length. Obtain the initial pressure difference of the disinfectant gas, and determine the operation loss by weighted summation of the basic operation length and the initial pressure difference; Obtain a preset loss threshold, compare the amount of work loss with the preset loss threshold, and determine whether the amount of work loss is less than the preset loss threshold. If the amount of work loss is less than the preset loss threshold, calculate the basic work length and the amount of work loss through the quotient to obtain the final work length.

6. The method for disinfecting aviation face masks according to claim 1, characterized in that: S106: Obtain the initial light transmittance of the basic working length and the aircraft mask surface, process the basic working length and the initial light transmittance through ratio calculation to obtain the material state corresponding to the mask surface; obtain the initial roughness of the mask surface, process the material state and the initial roughness using a random forest model to obtain the current aging value. Obtain a preset critical value, compare the current aging value with the preset critical value, and determine whether the current aging value is greater than the preset critical value. If the current aging value is greater than the preset critical value, then use a difference operation to process the current aging value and the preset critical value to determine the aging excess amount. Obtain a preset decay rate, and use a product operation to process the aging excess amount and the preset decay rate to obtain the target concentration difference. Obtain the first gas concentration, and use a difference operation to process the first gas concentration and the target concentration difference to obtain the second gas concentration. Obtain the initial deformation rate of the mask surface, and use a weighted summation operation to process the second gas concentration and the initial deformation rate to determine the final working length.

7. The method for disinfecting aircraft face masks according to claim 1, characterized in that: S108: Obtain the target operating length and the second gas concentration value, process the target operating length and concentration value through multiplication to obtain the basic injection volume; obtain the internal structure diagram of the aviation mask, extract the geometric parameters such as pipe diameter D, bending angle α and length L from the structure diagram, calculate the resistance coefficient ζ when the fluid passes through the structure based on the basic injection volume Q and the geometric parameters, and obtain the internal resistance value R by multiplying the resistance coefficient ζ and the basic injection volume Q; process the internal resistance value R using a decision tree model. The decision tree model uses the internal resistance value R, pipe diameter D and bending angle α as input features, and is trained based on historical experimental data to obtain the node partitioning rules of the decision tree as follows: when R is less than 50 Pa, it is divided into a left subtree corresponding to a 15-degree injection angle; when R is greater than or equal to 50 Pa and less than 120 Pa, it is divided into a middle subtree corresponding to a 30-degree injection angle; when R is greater than or equal to 120 Pa, it is divided into a right subtree corresponding to a 45-degree injection angle, thus determining the target injection angle θ; obtain the preset initial flow rate value F, and calculate the dynamic pressure difference based on the target injection angle θ and the initial flow rate value F. The system obtains a preset pressure threshold of 80 Pa, compares the dynamic pressure difference ΔP with the preset pressure threshold, and determines whether the dynamic pressure difference is greater than the preset pressure threshold. If the dynamic pressure difference is greater than the preset pressure threshold, it performs a difference operation to obtain a pressure compensation amount C. Based on the pressure compensation amount C, it performs a weighted summation operation to obtain a control value V. Based on the control value V, it generates an equipment instruction set. When V is less than 100, the instruction set code is 01, indicating low-speed injection; when V is between 100 and 200, the instruction set code is 02, indicating medium-speed injection; and when V is greater than 200, the instruction set code is 03, indicating high-speed injection. The system obtains a preset signal conversion rule, performs rule matching to process the equipment instruction set and the signal conversion rule, and outputs a disinfection control signal.

8. A disinfection device employing the disinfection method for aviation face masks according to any one of claims 1-7, characterized in that: It includes a frame assembly, a disinfection box, an atomizing assembly, a heating module, a drug storage module, a fan module, a drug return module, and a condensation drying module; The frame assembly is in the shape of a cuboid frame, and the disinfection box is set inside the frame assembly; the top of the disinfection box is connected to a heating module through a pipe, the heating module heats and vaporizes the atomized disinfectant liquid, and the vaporized disinfectant gas is blown into the disinfection box through a fan module; the bottom of the disinfection box is connected to a condensation and drying module through a pipe, which is used to liquefy and recover the gaseous disinfectant liquid. The atomizing component is housed within the frame assembly, and its input end is connected to the drug storage module via a pipe. The drug storage module contains disinfectant. A pump installed on the drug storage module draws the disinfectant into the atomizing component for atomization. The output end of the atomizing component is connected to the heating module via a pipe. The output end of the fan module is connected to the atomizing component and the heating module through a pipe, so as to blow the atomized disinfectant into the heating module and the heated and vaporized disinfectant into the disinfection box, respectively. The medicine return module is connected to the condensation and drying module via a pipeline, and is used to recycle the liquefied disinfectant solution after disinfection.

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