A method for detecting the air tightness of a shelter in a plateau environment

Abstract

This invention discloses a method for detecting the airtightness of a mobile cabin in a high-altitude environment, relating to the field of airtightness detection technology. It addresses the problem of inaccurate airtightness detection when the pressure difference between the external and internal surfaces of the cabin is small in high-altitude environments. The method includes: adjusting the real-time cabin pressure; increasing the real-time cabin pressure to a first cabin pressure, and performing a first airtightness test based on real-time environmental information and the real-time cabin pressure; performing a second airtightness test, determining whether the second airtightness test passes based on a comparison of the real-time cabin pressure with the second cabin pressure and the real-time cabin temperature with a real-time cabin temperature threshold; and performing a third airtightness test, determining whether the third airtightness test passes based on a model conforming to the pressure attenuation curve. This invention achieves airtightness detection of a mobile cabin in a high-altitude environment through multiple tests.

Description

Technical Field

[0001] This invention belongs to the field of airtightness testing technology, specifically a method for testing the airtightness of a container in a high-altitude environment. Background Technology

[0002] Airtightness testing of a mobile shelter involves a series of tests and monitoring methods to assess whether the shelter can maintain stable internal pressure under specific environmental conditions, preventing the infiltration of external air or gases. Airtightness testing is typically conducted by controlling the pressure difference between the inside and outside of the shelter, monitoring pressure decay, using gas leak detection equipment, or monitoring temperature changes. The aim is to ensure that no pressure leakage occurs during the use of the shelter, thereby guaranteeing the stability of the environment inside. This is particularly crucial in special environments such as high pressure, low pressure, or high altitudes, where the shelter's airtightness and safety are paramount.

[0003] In the existing technology, when the difference between the ambient pressure outside the container and the pressure inside the container is small, the airtightness of the container cannot be accurately detected. Moreover, the current indicators for detecting the airtightness of the container are relatively simple and cannot comprehensively judge the airtightness of the container by combining multiple parameters.

[0004] Therefore, this invention proposes a method for testing the airtightness of modular shelters in high-altitude environments. Summary of the Invention

[0005] In view of the shortcomings of existing technologies, the purpose of this invention is to provide a method for testing the airtightness of modular shelters in high-altitude environments.

[0006] The technical problem to be solved by this invention is:

[0007] How to test the airtightness of the lower compartment in a high-altitude environment based on multiple tests.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A method for testing the airtightness of a modular container in a high-altitude environment, the method comprising:

[0010] Step S1: Obtain real-time environmental information outside the shelter and real-time pressure inside the shelter, and adjust the real-time pressure inside the shelter.

[0011] Step S2: Increase the real-time cabin pressure inside the cabin to the first cabin pressure, and conduct the first airtightness test on the cabin based on the real-time environmental information and the real-time cabin pressure.

[0012] Step S3: Obtain the pressure of the second cabin inside the cabin, the real-time cabin temperature, and the real-time ambient temperature outside the cabin. Then, conduct a second airtightness test on the cabin. Determine whether the second airtightness test passes based on the comparison results between the real-time cabin pressure and the second cabin pressure, and between the real-time cabin temperature and the real-time cabin temperature threshold.

[0013] Step S4: Conduct a third airtightness test on the container and determine whether the third airtightness test is passed based on the model that the pressure attenuation curve conforms to.

[0014] As a preferred technical solution of the present invention, the real-time environmental information includes the real-time environmental pressure and the real-time helium content outside the shelter.

[0015] As a preferred technical solution of the present invention, step S1 includes the following sub-steps:

[0016] Step S11: If the real-time cabin pressure inside the cabin is less than the real-time ambient pressure, high-pressure air is delivered to the cabin through the compressed air system until the real-time cabin pressure inside the cabin equals the real-time ambient pressure and then the delivery stops.

[0017] Step S12: If the real-time cabin pressure inside the cabin is greater than the real-time ambient pressure, the air inside the cabin is discharged through the exhaust system until the real-time cabin pressure inside the cabin equals the real-time ambient pressure and then the exhaust stops.

[0018] Step S13: If the real-time pressure inside the shelter is equal to the real-time ambient pressure, no operation is performed.

[0019] As a preferred technical solution of the present invention, step S2 includes the following sub-steps:

[0020] Step S21: Record the time node when the real-time cabin pressure inside the cabin reaches the first cabin pressure, and record the corresponding time node as the initial time node. Record the real-time cabin pressure inside the cabin at preset test intervals until the maximum sealing time is reached, and stop recording. Record the time node when the maximum sealing time is reached as the termination time node.

[0021] Step S22: Obtain the real-time cabin pressure at the termination time node. If the difference between the real-time cabin pressure at the termination time node and the pressure of the first cabin is less than or equal to the pressure difference, proceed to the next step.

[0022] If the difference between the real-time pressure of the container at the termination time point and the pressure of the first container is greater than the pressure difference, then the first airtightness test of the container is deemed to have failed.

[0023] Step S23: Increase the real-time cabin pressure inside the cabin to the first cabin pressure again, and at the same time, turn on the cabin's exhaust system and set the output air rate of the exhaust system to discharge air from the cabin to a fixed value. At the same time, set the input air rate of the compressed air system to deliver high-pressure air into the cabin to a fixed value.

[0024] Step S24: Obtain the real-time cabin pressure at all time points within the maximum sealing duration;

[0025] If the real-time cabin pressure at all time points is greater than or equal to the first cabin pressure, the cabin is deemed to have passed the first airtightness test.

[0026] If the real-time pressure of the shelter at any point in time is less than the pressure of the first shelter, proceed to the next step.

[0027] As a preferred technical solution of the present invention, step S2 further includes the following sub-steps:

[0028] Step S25: Obtain the number of time points corresponding to the real-time cabin pressure being less than the first cabin pressure;

[0029] When the number of time points is less than the threshold, proceed to the next step;

[0030] When the number of time points is greater than or equal to the number threshold, the first airtightness test of the modular shelter is deemed to have failed.

[0031] Step S26: Obtain the real-time helium content outside the helium injection front cabin and iterate through it. Take the maximum real-time helium content as the maximum endpoint value of the helium content fluctuation range and the minimum real-time helium content as the minimum endpoint value of the helium content fluctuation range.

[0032] Step S27: Restore the real-time cabin pressure inside the cabin to the first cabin pressure, and inject helium into the cabin.

[0033] Step S28: Obtain the real-time helium content at all time points within the maximum sealing time of the outside of the container after helium injection, and at the same time obtain the number of time points corresponding to the real-time helium content that does not belong to the helium content fluctuation range.

[0034] Step S29: If the number of time nodes falls within the fluctuation range, the first airtightness test of the cabin is deemed to have passed, and the process proceeds to step S3.

[0035] If the number of time points does not fall within the fluctuation range, the first airtightness test of the shelter is deemed to have failed.

[0036] As a preferred technical solution of the present invention, step S3 includes the following sub-steps:

[0037] Step S31: Turn on the exhaust system to reduce the real-time pressure inside the shelter until the real-time pressure inside the shelter is equal to the real-time ambient pressure, while keeping the real-time temperature inside the shelter the same as the real-time ambient temperature.

[0038] Step S32: Obtain the real-time ambient temperature outside the shelter, the real-time pressure inside the shelter and the second shelter pressure, and convert the real-time ambient temperature into the first absolute temperature.

[0039] Step S33, then calculate the second absolute temperature inside the cabin;

[0040] Step S34: Convert the second absolute temperature into the test cabin temperature, and then heat the real-time cabin temperature inside the cabin to the test cabin temperature and then stop heating.

[0041] As a preferred technical solution of the present invention, step S3 further includes the following sub-steps:

[0042] Step S35: The time node from which the real-time temperature inside the container is heated to the test temperature is used as the initial time node. The real-time pressure inside the container is recorded at preset test intervals until the maximum sealing time is reached. The recording is stopped when the maximum sealing time is reached, and the time node when the maximum sealing time is reached is recorded as the termination time node.

[0043] Step S36: Obtain the real-time temperature of the container at the termination time node, and the real-time pressure of the container at all time nodes within the maximum sealing duration.

[0044] Step S37: If the real-time cabin temperature at any time point is less than the real-time cabin temperature threshold or the real-time cabin pressure at any time point is less than the second cabin pressure, then the second airtightness test of the cabin is determined to be unsuccessful.

[0045] If the real-time cabin temperature at the termination time point is greater than or equal to the real-time cabin temperature threshold, and the real-time cabin pressure at all time points is greater than or equal to the second cabin pressure, then the second airtightness test of the cabin is deemed to have passed, and the process proceeds to step S4.

[0046] As a preferred technical solution of the present invention, step S4 includes the following sub-steps:

[0047] Step S41: If the real-time pressure inside the container cabin is greater than the pressure of the third-party container cabin, then the exhaust system is activated to reduce the real-time pressure inside the container cabin to the pressure of the third-party container cabin.

[0048] If the real-time pressure inside the shelter is lower than the pressure inside the third-party shelter, then the real-time pressure inside the shelter will be increased to the pressure inside the third-party shelter.

[0049] If the real-time pressure inside the modular shelter is equal to the pressure of the third-party shelter, no operation will be performed.

[0050] Step S42: Record the time node when the real-time pressure inside the container reaches the pressure of the third container as the initial time node, record the real-time pressure inside the container according to the preset frequency until the maximum sealing time is reached, and stop recording. Record the time node when the maximum sealing time is reached as the termination time node.

[0051] Step S43: Construct a pressure decay curve with the X-axis representing the duration and the Y-axis representing the real-time cabin pressure, and compare the pressure decay curve with the linear model and the exponential model respectively.

[0052] As a preferred technical solution of the present invention, step S4 further includes the following sub-steps:

[0053] Step S44: When the pressure attenuation curve conforms to the linear model, the slope of the pressure attenuation curve is obtained, and the slope of the pressure attenuation curve is compared with the slope threshold of the linear model.

[0054] If the slope of the pressure attenuation curve is less than or equal to the slope threshold, the third airtightness test of the container is deemed to have passed.

[0055] If the slope of the pressure attenuation curve is greater than the slope threshold, the third airtightness test of the cabin is deemed to have failed.

[0056] When the pressure decay curve conforms to the exponential model, proceed to the next step;

[0057] Step S45: Obtain the standard pressure decay curve and calculate the mean square error between the standard pressure decay curve and the pressure decay curve.

[0058] Step S46: When the mean square error is greater than or equal to the error threshold, the third airtightness test of the cabin is deemed to have failed.

[0059] When the mean square error is less than the error threshold, proceed to the next step;

[0060] Step S47: Calculate the average real-time cabin pressure, and then calculate the coefficient of determination between the standard pressure decay curve and the pressure decay curve.

[0061] Step S48: If the coefficient of determination is greater than or equal to the coefficient of determination threshold, the third airtightness test of the cabin is deemed to have passed.

[0062] If the coefficient of determination is less than the threshold, the third airtightness test of the modular shelter is deemed to have failed.

[0063] As a preferred technical solution of the present invention, the pressure of the first container is greater than that of the second container, and the pressure of the second container is greater than that of the third container.

[0064] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0065] This invention first increases the real-time cabin pressure inside the shelter to a first cabin pressure. Then, based on real-time environmental information and the real-time cabin pressure, a first airtightness test is performed on the shelter. If the first airtightness test is passed, a second airtightness test is performed. The success of the second airtightness test is determined by comparing the real-time cabin pressure with the second cabin pressure and the real-time cabin temperature with the real-time cabin temperature threshold. If the second airtightness test is passed, a third airtightness test is performed on the shelter. The success of the third airtightness test is determined by the model conforming to the pressure attenuation curve. This invention achieves cabin airtightness detection in high-altitude environments through multiple tests. Attached Figure Description

[0066] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0067] Figure 1 This is a flowchart illustrating the overall method of the present invention;

[0068] Figure 2 This is a flowchart of the first airtightness test in this invention;

[0069] Figure 3 This is a schematic diagram of the computer device in this invention. Detailed Implementation

[0070] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0071] Example 1: Please refer to Figures 1-2 As shown, the technical solution provided by this invention is: a method for testing the airtightness of a container cabin in a high-altitude environment. This method is used to test the airtightness of a container cabin with a small pressure difference from the ambient air. The specific method is as follows:

[0072] Step S1: Obtain real-time environmental information outside the shelter and real-time pressure inside the shelter, and adjust the real-time pressure inside the shelter.

[0073] Specifically, the real-time environmental information includes the real-time environmental pressure and real-time helium content outside the shelter.

[0074] Specifically, the real-time ambient pressure outside the cabin is obtained by pressure sensors deployed outside the cabin, and the real-time helium content outside the cabin is obtained by gas sensors deployed outside the cabin.

[0075] It should be noted that the test chamber used in this embodiment is located at an altitude of 3,000 meters, and the corresponding real-time environmental pressure outside the chamber is 70 kPa.

[0076] In this embodiment, step S1 includes the following sub-steps:

[0077] Step S11: If the real-time cabin pressure inside the cabin is less than the real-time ambient pressure, high-pressure air is delivered to the cabin through the compressed air system until the real-time cabin pressure inside the cabin equals the real-time ambient pressure and then the delivery stops.

[0078] Step S12: If the real-time cabin pressure inside the cabin is greater than the real-time ambient pressure, the air inside the cabin is discharged through the exhaust system until the real-time cabin pressure inside the cabin equals the real-time ambient pressure and then the exhaust stops.

[0079] Step S13: If the real-time pressure inside the shelter is equal to the real-time ambient pressure, no operation is performed.

[0080] Step S2: Increase the real-time cabin pressure inside the cabin to the first cabin pressure, and conduct the first airtightness test on the cabin based on the real-time environmental information and the real-time cabin pressure.

[0081] The pressure of the first cabin is the atmospheric pressure at zero meters above sea level, specifically 101.3 kPa.

[0082] In this embodiment, step S2 includes the following sub-steps:

[0083] Step S21: Record the time node when the real-time cabin pressure inside the cabin reaches the first cabin pressure, and record the corresponding time node as the initial time node. Record the real-time cabin pressure inside the cabin at preset test intervals until the maximum sealing time is reached, and stop recording. Record the time node when the maximum sealing time is reached as the termination time node.

[0084] For example, the preset test duration is ten seconds, that is, the real-time cabin pressure is recorded every ten seconds.

[0085] Step S22: Obtain the real-time cabin pressure at the termination time node. If the difference between the real-time cabin pressure at the termination time node and the pressure of the first cabin is less than or equal to the pressure difference, proceed to the next step.

[0086] If the difference between the real-time pressure of the container at the termination time point and the pressure of the first container is greater than the pressure difference, then the first airtightness test of the container is deemed to have failed.

[0087] Step S23: Increase the real-time cabin pressure inside the cabin to the first cabin pressure again, and at the same time, turn on the cabin's exhaust system and set the output air rate of the exhaust system to discharge air from the cabin to a fixed value. At the same time, set the input air rate of the compressed air system to deliver high-pressure air into the cabin to a fixed value.

[0088] The output air velocity is the same as the input air velocity;

[0089] Step S24: Obtain the real-time cabin pressure at all time points within the maximum sealing time. If the real-time cabin pressure at all time points is greater than or equal to the first cabin pressure, the first airtightness test of the cabin is deemed to have passed. If the real-time cabin pressure at any time point is less than the first cabin pressure, proceed to the next step.

[0090] Step S25: Obtain the number of time points corresponding to the real-time cabin pressure being less than the first cabin pressure;

[0091] When the number of time points is less than the threshold, proceed to the next step;

[0092] When the number of time points is greater than or equal to the number threshold, the first airtightness test of the modular shelter is deemed to have failed.

[0093] Step S26: Obtain the real-time helium content outside the helium injection front cabin and iterate through it. Take the maximum real-time helium content as the maximum endpoint value of the helium content fluctuation range and the minimum real-time helium content as the minimum endpoint value of the helium content fluctuation range.

[0094] Step S27: Restore the real-time cabin pressure inside the cabin to the first cabin pressure, and inject helium into the cabin.

[0095] The gas used for the airtightness test can be carbon dioxide or helium. In this embodiment, helium is preferred as the test gas because it is not affected by temperature and humidity and is non-corrosive and non-flammable.

[0096] Step S28: Obtain the real-time helium content at all time points within the maximum sealing time of the outside of the container after helium injection, and at the same time obtain the number of time points corresponding to the real-time helium content that does not belong to the helium content fluctuation range.

[0097] Step S29: If the number of time nodes falls within the fluctuation range, the first airtightness test of the cabin is deemed to have passed, and the process proceeds to step S3.

[0098] If the number of time points does not fall within the fluctuation range, the first airtightness test of the shelter is deemed to have failed.

[0099] Step S3: Obtain the pressure of the second cabin inside the cabin, the real-time cabin temperature, and the real-time ambient temperature outside the cabin. Then, conduct a second airtightness test on the cabin. Determine whether the second airtightness test passes based on the comparison results between the real-time cabin pressure and the second cabin pressure, and between the real-time cabin temperature and the real-time cabin temperature threshold.

[0100] It should be noted that when the shelter is used for normal purposes, the difference between the real-time pressure inside the shelter and the real-time ambient pressure outside the shelter is small. The second shelter pressure inside the shelter is the maximum real-time shelter pressure inside the shelter, which is 72 kPa.

[0101] Specifically, the real-time temperature inside the modular shelter is obtained through temperature sensors deployed inside the shelter; and the real-time ambient temperature outside the shelter is obtained through temperature sensors deployed outside the shelter.

[0102] Specifically, the real-time ambient temperature is zero degrees Celsius;

[0103] In this embodiment, step S3 includes the following sub-steps:

[0104] Step S31: Turn on the exhaust system to reduce the real-time pressure inside the shelter until the real-time pressure inside the shelter is equal to the real-time ambient pressure, while keeping the real-time temperature inside the shelter the same as the real-time ambient temperature.

[0105] Step S32: Obtain the real-time ambient temperature SSH outside the shelter, the real-time pressure FCY inside the shelter, and the pressure DEY of the second shelter. Convert the real-time ambient temperature to the first absolute temperature JDW using the conversion formula between Celsius and Kelvin. The specific formula is as follows:

[0106] JDW = 273.15 + SSH, where 273.15 is the absolute value of absolute zero;

[0107] Step S33: Calculate the second absolute temperature (FCC) inside the shelter using the following formula:

[0108] FCC = JDW × DEY / FCY;

[0109] The unit for real-time ambient temperature is degrees Celsius, and the units for the first and second absolute temperatures are Kelvin.

[0110] It should be specifically noted that when the interior of the shelter is a closed space, heating the interior of the shelter will increase the real-time pressure inside the shelter. Therefore, the real-time pressure inside the shelter can be increased to reach the second shelter pressure by raising the temperature.

[0111] Step S34: Convert the second absolute temperature into the test cabin temperature using the conversion formula between Celsius and Kelvin temperature scales, and then stop heating when the real-time cabin temperature inside the cabin reaches the test cabin temperature.

[0112] Step S35: The time node from which the real-time temperature inside the container is heated to the test temperature is used as the initial time node. The real-time pressure inside the container is recorded at preset test intervals until the maximum sealing time is reached. The recording is stopped when the maximum sealing time is reached, and the time node when the maximum sealing time is reached is recorded as the termination time node.

[0113] Step S36: Obtain the real-time temperature of the container at the termination time node, and the real-time pressure of the container at all time nodes within the maximum sealing duration.

[0114] Step S37: If the real-time cabin temperature at any time point is less than the real-time cabin temperature threshold or the real-time cabin pressure at any time point is less than the second cabin pressure, then the second airtightness test of the cabin is determined to be unsuccessful.

[0115] If the real-time cabin temperature at the termination time point is greater than or equal to the real-time cabin temperature threshold, and the real-time cabin pressure at all time points is greater than or equal to the second cabin pressure, then the second airtightness test of the cabin is deemed to have passed, and the process proceeds to step S4.

[0116] It should be specifically noted that the real-time cabin temperature threshold is determined by heating the cabin to the test cabin temperature. As the cabin radiates infrared heat to the outside, the real-time cabin temperature inside the cabin continues to decrease. Therefore, the real-time cabin temperature inside the cabin is at its lowest value at the termination time point.

[0117] Step S4: Conduct a third airtightness test on the container and determine whether the third airtightness test is passed based on the model that the pressure decay curve conforms to.

[0118] Among them, the pressure of the first cabin is greater than that of the second cabin, and the pressure of the second cabin is greater than that of the third cabin;

[0119] Specifically, the pressure of the third compartment inside the modular hospital is the minimum real-time pressure inside the modular hospital, which is 70.5 kPa.

[0120] In this embodiment, step S4 includes the following sub-steps:

[0121] Step S41: If the real-time pressure inside the container cabin is greater than the pressure of the third-party container cabin, then the exhaust system is activated to reduce the real-time pressure inside the container cabin to the pressure of the third-party container cabin.

[0122] If the real-time pressure inside the shelter is lower than the pressure inside the third-party shelter, then the real-time pressure inside the shelter will be increased to the pressure inside the third-party shelter.

[0123] If the real-time pressure inside the modular shelter is equal to the pressure of the third-party shelter, no operation will be performed.

[0124] Step S42: Record the time node when the real-time pressure inside the container reaches the pressure of the third container as the initial time node, record the real-time pressure inside the container according to the preset frequency until the maximum sealing time is reached, and stop recording. Record the time node when the maximum sealing time is reached as the termination time node.

[0125] For example, the preset frequency is to collect the real-time pressure inside the modular cabin twice per second;

[0126] Step S43: Construct a pressure decay curve with the X-axis representing time duration and the Y-axis representing real-time cabin pressure. Compare the pressure decay curve with the linear model P1(ti) = P0 - ati and the exponential model. The comparison is performed, where i is the time node number, i = 1, 2, ..., n, and n is a positive integer;

[0127] Step S44: When the pressure attenuation curve conforms to the linear model, the slope of the pressure attenuation curve is obtained, and the slope of the pressure attenuation curve is compared with the slope threshold of the linear model. If the slope of the pressure attenuation curve is less than or equal to the slope threshold, the third airtightness test of the cabin is determined to be passed. If the slope of the pressure attenuation curve is greater than the slope threshold, the third airtightness test of the cabin is determined to be failed.

[0128] When the pressure decay curve conforms to the exponential model, proceed to the next step;

[0129] It should be specifically noted that in the linear model P1(ti) = P0 - ati, P1(ti) is the real-time cabin pressure at time node ti, P0 is the real-time cabin pressure at the initial time node, and a is the natural constant.

[0130] Exponential Model In this context, e is the natural constant, a is the pressure decay rate, is a constant with a fixed value, P0 is the real-time cabin pressure at the initial time node, and P1(ti) is the real-time cabin pressure at time node ti.

[0131] Step S45: Obtain the standard pressure attenuation curve P2(ti), and calculate the mean square error (MSE) between the standard pressure attenuation curve P2(ti) and the pressure attenuation curve P1(ti) using the mean square error formula. The specific formula is as follows:

[0132] ;

[0133] Step S46: When the mean square error is greater than or equal to the error threshold, the third airtightness test of the cabin is deemed to have failed.

[0134] When the mean square error is less than the error threshold, proceed to the next step;

[0135] Step S47: Calculate the average real-time cabin pressure PJP, and calculate the coefficient of determination R between the standard pressure decay curve P2(ti) and the pressure decay curve P1(ti) using the coefficient of determination formula. 2 The formula is as follows:

[0136] ;

[0137] Step S48: If the coefficient of determination is greater than or equal to the coefficient of determination threshold, the third airtightness test of the cabin is deemed to have passed.

[0138] If the coefficient of determination is less than the threshold, the third airtightness test of the modular shelter is deemed to have failed.

[0139] In this application, if a corresponding calculation formula appears, the above calculation formula is a dimensionless calculation. The weighting coefficient, proportional coefficient and other coefficients in the formula are set to quantify each parameter to obtain a result value. The size of the weighting coefficient and proportional coefficient is only required to not affect the proportional relationship between the parameter and the result value.

[0140] Example 2: The present invention also provides a computer-readable storage medium storing a computer program thereon. When executed by a processor, the program implements any of the method steps in the above embodiments. The method is as follows: acquiring real-time environmental information outside the shelter and real-time shelter pressure inside the shelter, and adjusting the real-time shelter pressure; increasing the real-time shelter pressure inside the shelter to a first shelter pressure, and performing a first airtightness test on the shelter based on the real-time environmental information and the real-time shelter pressure; acquiring a second shelter pressure inside the shelter, real-time shelter temperature, and real-time environmental temperature outside the shelter, and then performing a second airtightness test on the shelter, determining whether the second airtightness test passes based on the comparison results of the real-time shelter pressure and the second shelter pressure, and the real-time shelter temperature and the real-time shelter temperature threshold; performing a third airtightness test on the shelter, and determining whether the third airtightness test passes based on the model conforming to the pressure attenuation curve.

[0141] The present invention also provides a computer device, such as Figure 3 As shown, for ease of explanation, only the parts related to the embodiments of the present invention are shown. For specific technical details not disclosed, please refer to the method section of the embodiments of the present invention. The computer device can be any terminal device including mobile phones, tablets, PDAs, POS terminals, in-vehicle computers, etc. Taking a mobile phone as an example:

[0142] Figure 3 The diagram illustrates a structural design related to a computer device provided in an embodiment of the present invention. This computer device includes: a memory, a processor, a communication bus, and a communication interface. Those skilled in the art will understand that... Figure 3 The computer device structure shown does not constitute a limitation on the computer device and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0143] The following is combined with Figure 3 A detailed introduction to each component of a computer device:

[0144] Memory can be used to store software programs and modules. The processor executes various functional applications and data processing by running the software programs and modules stored in memory. Memory can mainly include a program storage area and a data storage area. The program storage area can store the operating system, at least one application program required for a function, etc.; the data storage area can store data, etc. Furthermore, memory can include high-speed random access memory, and can also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0145] The processor is the control center of a computer device. It performs various functions and processes data by running or executing software programs and / or modules stored in memory, and by accessing data stored in memory. Optionally, the processor may include one or more processing units; preferably, the processor may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication.

[0146] In this embodiment of the invention, the processor included in the computer device may have the functions corresponding to any of the method steps in the above embodiments.

[0147] The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used in conjunction with the teachings herein. The required structure for constructing such systems is apparent from the above description. Furthermore, this invention is not directed to any particular programming language. It should be understood that the contents of the invention described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of the invention.

[0148] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0149] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the invention, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be construed as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into this detailed description, wherein each claim itself is a separate embodiment of the invention.

[0150] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0151] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

[0152] The various component embodiments of the present invention can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components of the gateway, proxy server, or system according to embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., a computer program and computer program product) for performing part or all of the methods described herein. Such programs implementing the present invention can be stored on a computer-readable medium or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0153] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of words such as "second," "third," etc., does not indicate any order. These words can be interpreted as names.

Claims

1. A method for detecting the air tightness of a shelter in a highland environment, characterized in that, The methods include: Step S1: Obtain real-time environmental information outside the shelter and real-time pressure inside the shelter, and adjust the real-time pressure inside the shelter. Step S2: Increase the real-time cabin pressure inside the cabin to the first cabin pressure, and conduct the first airtightness test on the cabin based on the real-time environmental information and the real-time cabin pressure. Step S2 includes the following sub-steps: Step S21: Record the time node when the real-time cabin pressure inside the cabin reaches the first cabin pressure, and record the corresponding time node as the initial time node. Record the real-time cabin pressure inside the cabin at preset test intervals until the maximum sealing time is reached, and stop recording. Record the time node when the maximum sealing time is reached as the termination time node. Step S22: Obtain the real-time cabin pressure at the termination time node. If the difference between the real-time cabin pressure at the termination time node and the pressure of the first cabin is less than or equal to the pressure difference, proceed to the next step. If the difference between the real-time pressure of the container at the termination time point and the pressure of the first container is greater than the pressure difference, then the first airtightness test of the container is deemed to have failed. Step S23: Increase the real-time cabin pressure inside the cabin to the first cabin pressure again, and at the same time, turn on the cabin's exhaust system and set the output air rate of the exhaust system to discharge air from the cabin to a fixed value. At the same time, set the input air rate of the compressed air system to deliver high-pressure air into the cabin to a fixed value. Step S24: Obtain the real-time cabin pressure at all time points within the maximum sealing duration; If the real-time cabin pressure at all time points is greater than or equal to the first cabin pressure, the cabin is deemed to have passed the first airtightness test. If the real-time pressure of the shelter at any time point is less than the pressure of the first shelter, proceed to the next step; Step S25: Obtain the number of time points corresponding to the real-time cabin pressure being less than the first cabin pressure; When the number of time points is less than the threshold, proceed to the next step; When the number of time points is greater than or equal to the number threshold, the first airtightness test of the modular shelter is deemed to have failed. Step S26: Obtain the real-time helium content outside the helium injection front cabin and traverse it. Take the maximum real-time helium content as the maximum endpoint value of the helium content fluctuation range and the minimum real-time helium content as the minimum endpoint value of the helium content fluctuation range. Step S27: Restore the real-time cabin pressure inside the cabin to the first cabin pressure, and inject helium into the cabin. Step S28: Obtain the real-time helium content at all time points within the maximum sealing time of the outside of the container after helium injection, and at the same time obtain the number of time points corresponding to the real-time helium content that does not belong to the helium content fluctuation range. Step S29: If the number of time nodes falls within the fluctuation range, the first airtightness test of the cabin is deemed to have passed, and the process proceeds to step S3. If the number of time points does not fall within the fluctuation range, the first airtightness test of the modular shelter is deemed to have failed. Step S3: Obtain the pressure of the second cabin inside the cabin, the real-time cabin temperature, and the real-time ambient temperature outside the cabin. Then, conduct a second airtightness test on the cabin. Determine whether the second airtightness test passes based on the comparison results between the real-time cabin pressure and the second cabin pressure, and between the real-time cabin temperature and the real-time cabin temperature threshold. Step S3 includes the following sub-steps: Step S31: Activate the exhaust system to reduce the real-time pressure inside the shelter until it equals the real-time ambient pressure, while keeping the real-time temperature inside the shelter the same as the real-time ambient temperature. Step S32: Obtain the real-time ambient temperature outside the shelter, the real-time pressure inside the shelter and the second shelter pressure, and convert the real-time ambient temperature into the first absolute temperature. Step S33, then calculate the second absolute temperature inside the cabin; Step S34: Convert the second absolute temperature into the test cabin temperature, and then heat the real-time cabin temperature inside the cabin to the test cabin temperature and then stop heating. Step S35: The time node from which the real-time temperature inside the container is heated to the test temperature is used as the initial time node. The real-time pressure inside the container is recorded at preset test intervals until the maximum sealing time is reached. The recording is stopped when the maximum sealing time is reached, and the time node when the maximum sealing time is reached is recorded as the termination time node. Step S36: Obtain the real-time temperature of the container at the termination time node, and the real-time pressure of the container at all time nodes within the maximum sealing duration. Step S37: If the real-time cabin temperature at any time point is less than the real-time cabin temperature threshold or the real-time cabin pressure at any time point is less than the second cabin pressure, then the second airtightness test of the cabin is determined to be unsuccessful. If the real-time cabin temperature at the termination time point is greater than or equal to the real-time cabin temperature threshold, and the real-time cabin pressure at all time points is greater than or equal to the second cabin pressure, then the second airtightness test of the cabin is deemed to have passed, and the process proceeds to step S4. Step S4: Conduct a third airtightness test on the container and determine whether the third airtightness test is passed based on the model that the pressure decay curve conforms to. Step S4 includes the following sub-steps: Step S41: If the real-time pressure inside the container cabin is greater than the pressure of the third-party container cabin, then the exhaust system is activated to reduce the real-time pressure inside the container cabin to the pressure of the third-party container cabin. If the real-time pressure inside the shelter is lower than the pressure inside the third-party shelter, then the real-time pressure inside the shelter will be increased to the pressure inside the third-party shelter. If the real-time pressure inside the modular shelter is equal to the pressure of the third-party shelter, no operation will be performed. Step S42: Record the time node when the real-time pressure inside the container reaches the pressure of the third container as the initial time node, record the real-time pressure inside the container according to the preset frequency until the maximum sealing time is reached, and stop recording. Record the time node when the maximum sealing time is reached as the termination time node. Step S43: Construct a pressure decay curve with the X-axis representing the duration and the Y-axis representing the real-time cabin pressure, and compare the pressure decay curve with the linear model and the exponential model respectively. Step S44: When the pressure attenuation curve conforms to the linear model, the slope of the pressure attenuation curve is obtained, and the slope of the pressure attenuation curve is compared with the slope threshold of the linear model. If the slope of the pressure attenuation curve is less than or equal to the slope threshold, the third airtightness test of the container is deemed to have passed. If the slope of the pressure attenuation curve is greater than the slope threshold, the third airtightness test of the cabin is deemed to have failed. When the pressure decay curve conforms to the exponential model, proceed to the next step; Step S45: Obtain the standard pressure decay curve and calculate the mean square error between the standard pressure decay curve and the pressure decay curve. Step S46: When the mean square error is greater than or equal to the error threshold, the third airtightness test of the cabin is deemed to have failed. When the mean square error is less than the error threshold, proceed to the next step; Step S47: Calculate the average real-time cabin pressure, and then calculate the coefficient of determination between the standard pressure decay curve and the pressure decay curve. Step S48: If the coefficient of determination is greater than or equal to the coefficient of determination threshold, the third airtightness test of the cabin is deemed to have passed. If the coefficient of determination is less than the threshold, the third airtightness test of the modular shelter is deemed to have failed.

2. The method for detecting the air tightness of a shelter in a highland environment according to claim 1, characterized in that, The real-time environmental information includes the real-time ambient pressure and real-time helium content outside the shelter.

3. The method for testing the airtightness of a container in a high-altitude environment according to claim 1, characterized in that, Step S1 includes the following sub-steps: Step S11: If the real-time cabin pressure inside the cabin is less than the real-time ambient pressure, high-pressure air is delivered to the cabin through the compressed air system until the real-time cabin pressure inside the cabin equals the real-time ambient pressure and then the delivery stops. Step S12: If the real-time cabin pressure inside the cabin is greater than the real-time ambient pressure, the air inside the cabin is discharged through the exhaust system until the real-time cabin pressure inside the cabin equals the real-time ambient pressure and then the exhaust stops. Step S13: If the real-time pressure inside the shelter is equal to the real-time ambient pressure, no operation is performed.

4. The method for testing the airtightness of a container in a high-altitude environment according to claim 1, characterized in that, The pressure in the first cabin is greater than that in the second cabin, and the pressure in the second cabin is greater than that in the third cabin.

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