Shelter air tightness detection method used in plateau environment

Abstract

The invention discloses an air tightness detection method for a shelter in a plateau environment, relates to the technical field of air tightness detection, and solves the problem that the air tightness of the shelter cannot be accurately detected when the difference between the external pressure of the shelter and the internal pressure of the shelter is small in the plateau environment. Increasing the real-time shelter pressure in the shelter to a first shelter pressure, and performing a first air tightness test on the shelter according to the real-time environment information and the real-time shelter pressure; performing a second air tightness test on the square cabin, and judging whether the second air tightness test passes or not according to comparison results of the real-time square cabin pressure intensity and the second square cabin pressure intensity and comparison results of the real-time square cabin temperature and the real-time square cabin temperature threshold value; and performing a third air tightness test on the square cabin, and judging whether the third air tightness test is passed or not according to the model which the pressure intensity attenuation curve conforms to, thereby realizing the detection of the air tightness of the square cabin in the plateau environment through a plurality of tests.

Description

Technical Field

[0001] The present invention belongs to the technical field of airtightness detection, and specifically relates to a method for detecting the airtightness of a shelter in a plateau environment. Background Art

[0002] The airtightness detection of a shelter is to evaluate whether the shelter can maintain a stable internal air pressure under specific environmental conditions through a series of testing and monitoring means, and prevent external air or gas from infiltrating. The airtightness detection is usually carried out by controlling the pressure difference between the inside and outside of the shelter, monitoring the pressure decay, using gas leakage detection equipment or temperature changes, etc. The purpose is to ensure that there is no air pressure leakage during the use of the shelter, so as to ensure the environmental stability inside the shelter. Especially in special environments such as high pressure, low pressure or plateau, the airtightness and safety of the shelter are crucial.

[0003] In the prior art, when the environmental pressure outside the shelter is close to the pressure inside the shelter, it is impossible to accurately detect the airtightness of the shelter, and the current indicators for detecting the airtightness of the shelter are relatively single, and it is impossible to comprehensively judge the airtightness of the shelter based on multiple parameters; Therefore, the present invention proposes a method for detecting the airtightness of a shelter in a plateau environment. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a method for detecting the airtightness of a shelter in a plateau environment.

[0005] The technical problem to be solved by the present invention is: How to detect the airtightness of a shelter in a plateau environment based on multiple tests.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions: A method for detecting the airtightness of a shelter in a plateau environment, the method includes: Step S1, obtaining the real-time environmental information outside the shelter and the real-time shelter pressure inside the shelter, and adjusting the real-time shelter pressure of the shelter; Step S2, increasing the real-time shelter pressure inside the shelter to the first shelter pressure, and performing the first airtightness test on the shelter according to the real-time environmental information and the real-time shelter pressure; Step S3, obtaining the second shelter pressure inside the shelter, the real-time shelter temperature and the real-time environmental temperature outside the shelter, and then performing the second airtightness test on the shelter, and judging whether the second airtightness test passes according to the comparison results of the real-time shelter pressure and the second shelter pressure and the comparison results of the real-time shelter temperature and the real-time shelter temperature threshold; Step S4, performing the third airtightness test on the shelter, and judging whether the third airtightness test passes according to the model conforming to the pressure decay curve.

[0007] As a preferred technical solution of the present invention, the real-time environmental information is the real-time environmental pressure and the real-time helium content outside the shelter.

[0008] As a preferred technical solution of the present invention, the step S1 includes the following sub-steps: Step S11, if the real-time shelter pressure inside the shelter is less than the real-time environmental pressure, the high-pressure air is conveyed into the shelter through the compressed air system until the real-time shelter pressure inside the shelter is equal to the real-time environmental pressure and then the conveyance stops; Step S12, if the real-time shelter pressure inside the shelter is greater than the real-time environmental pressure, the air inside the shelter is discharged through the exhaust system until the real-time shelter pressure inside the shelter is equal to the real-time environmental pressure and then the exhaust stops; Step S13, if the real-time shelter pressure inside the shelter is equal to the real-time environmental pressure, no operation is performed.

[0009] As a preferred technical solution of the present invention, the step S2 includes the following sub-steps: Step S21, record the time node when the real-time shelter pressure inside the shelter reaches the first shelter pressure, and mark the corresponding time node as the initial time node. Record the real-time shelter pressure inside the shelter at every preset test duration until the maximum airtight duration is reached and then stop recording, and mark the time node when the maximum airtight duration is reached as the termination time node; Step S22, obtain the real-time shelter pressure at the termination time node. If the difference between the real-time shelter pressure at the termination time node and the first shelter pressure is less than or equal to the pressure difference, proceed to the next step; If the difference between the real-time shelter pressure at the termination time node and the first shelter pressure is greater than the pressure difference, it is determined that the first airtightness test of the shelter fails; Step S23, increase the real-time shelter pressure inside the shelter to the first shelter pressure again, and at the same time, turn on the exhaust system of the shelter, and set the output air rate of the exhaust system for discharging the air inside the shelter to a fixed value, and at the same time, set the input air rate of the compressed air system for conveying the high-pressure air into the shelter to a fixed value; Step S24, obtain the real-time shelter pressure at all time nodes within the maximum airtight duration; If the real-time shelter pressure at all time nodes is greater than or equal to the first shelter pressure, it is determined that the first airtightness test of the shelter passes; If the real-time shelter pressure at any time node is less than the first shelter pressure, proceed to the next step.

[0010] As a preferred technical solution of the present invention, the step S2 further includes the following sub-steps: Step S25, obtain the number of time nodes when the real-time pressure in the mobile cabin is less than the first pressure in the mobile cabin; When the number of time nodes is less than the quantity threshold, proceed to the next step; When the number of time nodes is greater than or equal to the quantity threshold, determine that the first airtightness test of the mobile cabin fails; Step S26, obtain and traverse the real-time helium content outside the mobile cabin before helium injection, take the maximum real-time helium content as the maximum endpoint value of the helium content fluctuation range, and take the minimum real-time helium content as the minimum endpoint value of the helium content fluctuation range; Step S27, restore the real-time pressure in the mobile cabin to the first pressure in the mobile cabin, and inject helium into the mobile cabin; Step S28, obtain the real-time helium content at all time nodes within the maximum airtight duration outside the mobile cabin after helium injection, and at the same time obtain the number of time nodes 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 belongs to the fluctuation quantity range, determine that the first airtightness test of the mobile cabin passes, and proceed to Step S3; If the number of time nodes does not belong to the fluctuation quantity range, determine that the first airtightness test of the mobile cabin fails.

[0011] As a preferred technical solution of the present invention, the said Step S3 includes the following sub-steps: Step S31, turn on the exhaust system, reduce the real-time pressure in the mobile cabin until the real-time pressure in the mobile cabin is equal to the real-time ambient pressure, and at the same time keep the real-time temperature in the mobile cabin the same as the real-time ambient temperature; Step S32, obtain the real-time ambient temperature outside the mobile cabin, the real-time pressure in the mobile cabin, and the second pressure in the mobile cabin, and convert the real-time ambient temperature to the first absolute temperature; Step S33, then calculate the second absolute temperature inside the mobile cabin; Step S34, convert the second absolute temperature to the test mobile cabin temperature, and then stop heating when the real-time temperature in the mobile cabin is heated to the test mobile cabin temperature.

[0012] As a preferred technical solution of the present invention, the said Step S3 further includes the following sub-steps: Step S35, take the time node when the real-time temperature in the mobile cabin is heated to the test mobile cabin temperature as the initial time node, record the real-time pressure in the mobile cabin every preset test duration until the maximum airtight duration is reached and stop recording, and record the time node when the maximum airtight duration is reached as the termination time node; Step S36, obtain the real-time temperature in the mobile cabin at the termination time node, and the real-time pressure in the mobile cabin at all time nodes within the maximum airtight duration; Step S37: If the real-time temperature of the mobile cabin at any time node is less than the real-time temperature threshold of the mobile cabin or the real-time pressure of the mobile cabin at any time node is less than the second cabin pressure, it is determined that the second airtightness test of the mobile cabin fails; If the real-time temperature of the mobile cabin at the termination time node is greater than or equal to the real-time temperature threshold of the mobile cabin and the real-time pressures of the mobile cabin at all time nodes are greater than or equal to the second cabin pressure, it is determined that the second airtightness test of the mobile cabin passes, and step S4 is entered.

[0013] As a preferred technical solution of the present invention, step S4 includes the following sub-steps: Step S41: If the real-time pressure of the mobile cabin inside is greater than the third cabin pressure, the exhaust system is turned on to reduce the real-time pressure of the mobile cabin inside to the third cabin pressure; If the real-time pressure of the mobile cabin inside is less than the third cabin pressure, the real-time pressure of the mobile cabin inside is increased to the third cabin pressure; If the real-time pressure of the mobile cabin inside is equal to the third cabin pressure, no operation is performed; Step S42: The time node when the real-time pressure of the mobile cabin inside reaches the third cabin pressure is recorded as the initial time node, and the real-time pressure of the mobile cabin inside is recorded according to the preset frequency until the maximum airtight duration is reached and recording stops, and the time node when the maximum airtight duration is reached is recorded as the termination time node; Step S43: With the X-axis as the duration and the Y-axis as the real-time pressure of the mobile cabin, a pressure decay curve is constructed, and the pressure decay curve is compared with the linear model and the exponential model respectively.

[0014] As a preferred technical solution of the present invention, step S4 further includes the following sub-steps: Step S44: When the pressure decay curve conforms to the linear model, the slope of the pressure decay curve is obtained, and the slope of the pressure decay curve is compared with the slope threshold of the linear model; If the slope of the pressure decay curve is less than or equal to the slope threshold, it is determined that the third airtightness test of the mobile cabin passes; If the slope of the pressure decay curve is greater than the slope threshold, it is determined that the third airtightness test of the mobile cabin fails; When the pressure decay curve conforms to the exponential model, the next step is entered; Step S45: A standard pressure decay curve is obtained, and the mean square error between the standard pressure decay curve and the pressure decay curve is calculated; Step S46: When the mean square error is greater than or equal to the error threshold, it is determined that the third airtightness test of the mobile cabin fails; When the mean square error is less than the error threshold, the next step is entered; Step S47: Calculate the average value of the 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, it is determined that the third airtightness test of the cabin passes. If the coefficient of determination is less than the coefficient of determination threshold, it is determined that the third airtightness test of the cabin fails.

[0015] As a preferred technical solution of the present invention, the pressure of the first cabin is greater than the pressure of the second cabin, and the pressure of the second cabin is greater than the pressure of the third cabin.

[0016] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are as follows: The present invention first increases the real-time cabin pressure inside the cabin to the pressure of the first cabin, and then conducts the first airtightness test on the cabin according to the real-time environmental information and the real-time cabin pressure. After the first airtightness test passes, the second airtightness test is conducted on the cabin. Whether the second airtightness test passes is determined according to the comparison results of the real-time cabin pressure and the pressure of the second cabin and the real-time cabin temperature and the real-time cabin temperature threshold. After the second airtightness test passes, the third airtightness test is conducted on the cabin. Whether the third airtightness test passes is determined according to the model conforming to the pressure decay curve. The present invention realizes the detection of the airtightness of the cabin in the plateau environment through multiple tests. Description of the Drawings

[0017] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the drawings.

[0018] Figure 1 It is the overall method flow chart of the present invention; Figure 2 It is the test flow chart of the first airtightness test in the present invention; Figure 3 It is the structural schematic diagram of the computer device in the present invention. Detailed Embodiments

[0019] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] Embodiment 1: Please refer to Figure 1 - Figure 2 As shown, the technical solution provided by the present invention is: A method for detecting the airtightness of a cabin in a plateau environment. This method is used to detect the airtightness of a cabin with a small pressure difference from the ambient air pressure. The method is as follows: Step S1, obtain the real-time environmental information outside the shelter and the real-time shelter pressure inside the shelter, and adjust the real-time shelter pressure of the shelter; Among them, the real-time environmental information is specifically the real-time environmental pressure and the real-time helium content outside the shelter; Specifically, obtain the real-time environmental pressure outside the shelter through a pressure sensor deployed outside the shelter, and obtain the real-time helium content outside the shelter through a gas sensor deployed outside the shelter; It should be specifically noted that in this embodiment, the shelter for detection is located at an altitude of 3,000 meters, and the corresponding real-time environmental pressure outside the shelter is 70 kPa; In this embodiment, the step S1 includes the following sub-steps: Step S11, if the real-time shelter pressure inside the shelter is less than the real-time environmental pressure, then send high-pressure air into the shelter through a compressed air system until the real-time shelter pressure inside the shelter is equal to the real-time environmental pressure and then stop sending; Step S12, if the real-time shelter pressure inside the shelter is greater than the real-time environmental pressure, then discharge the air inside the shelter through an exhaust system until the real-time shelter pressure inside the shelter is equal to the real-time environmental pressure and then stop exhausting; Step S13, if the real-time shelter pressure inside the shelter is equal to the real-time environmental pressure, then do not perform any operation.

[0021] Step S2, increase the real-time shelter pressure inside the shelter to the first shelter pressure, and perform a first airtightness test on the shelter according to the real-time environmental information and the real-time shelter pressure; Among them, the first shelter pressure is the atmospheric pressure at an altitude of 0 meters, specifically 101.3 kPa; In this embodiment, the step S2 includes the following sub-steps: Step S21, record the time node when the real-time shelter pressure inside the shelter reaches the first shelter pressure, and record the corresponding time node as the initial time node. Record the real-time shelter pressure inside the shelter every preset test duration until reaching the maximum airtight duration and then stop recording, and record the time node when reaching the maximum airtight duration as the termination time node; Exemplarily, the preset test duration is ten seconds, that is, record the corresponding real-time shelter pressure every ten seconds; Step S22, obtain the real-time shelter pressure at the termination time node. If the difference between the real-time shelter pressure at the termination time node and the first shelter pressure is less than or equal to the pressure difference, then proceed to the next step; If the difference between the real-time shelter pressure at the termination time node and the first shelter pressure is greater than the pressure difference, then determine that the first airtightness test of the shelter fails; Step S23: Increase the real-time cabin pressure inside the cabin to the first cabin pressure again. Meanwhile, turn on the exhaust system of the cabin, set the output air rate of the exhaust system for discharging the air inside the cabin to a fixed value, and set the input air rate of the high-pressure air delivered by the compressed air system to the inside of the cabin to a fixed value; Among them, the output air rate is the same as the input air rate; Step S24: Obtain the real-time cabin pressure at all time nodes within the maximum airtight duration. If the real-time cabin pressure at all time nodes is greater than or equal to the first cabin pressure, it is determined that the first airtightness test of the cabin passes; if the real-time cabin pressure at any time node is less than the first cabin pressure, proceed to the next step; Step S25: Obtain the number of time nodes corresponding to the real-time cabin pressure less than the first cabin pressure; When the number of time nodes is less than the number threshold, proceed to the next step; When the number of time nodes is greater than or equal to the number threshold, it is determined that the first airtightness test of the cabin fails; Step S26: Obtain and traverse the real-time helium content outside the cabin before helium injection, take the maximum real-time helium content as the maximum endpoint value of the helium content fluctuation range, and take 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; Among them, the gas for the airtightness test can be carbon dioxide or helium. In this embodiment, helium is preferably used as the test gas. Helium is not affected by temperature and humidity, and is non-corrosive and non-flammable; Step S28: Obtain the real-time helium content at all time nodes within the maximum airtight duration outside the cabin after helium injection, and at the same time obtain the number of time nodes 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 belongs to the fluctuation number range, it is determined that the first airtightness test of the cabin passes, and proceed to Step S3; If the number of time nodes does not belong to the fluctuation number range, it is determined that the first airtightness test of the cabin fails.

[0022] Step S3: Obtain the second cabin pressure, the real-time cabin temperature inside the cabin, and the real-time ambient temperature outside the cabin, and then conduct the second airtightness test on the cabin. Determine whether the second airtightness test passes based on the comparison results of the real-time cabin pressure and the second cabin pressure, and the real-time cabin temperature and the real-time cabin temperature threshold; Specifically, when the mobile cabin is in normal use, the difference between the real-time cabin pressure inside the mobile cabin and the real-time ambient pressure outside the mobile cabin is small. The second cabin pressure inside the mobile cabin is the maximum real-time cabin pressure inside the mobile cabin, and the second cabin pressure is specifically 72 kPa; Among them, the real-time cabin temperature inside the mobile cabin is obtained by a temperature sensor deployed inside the mobile cabin; the real-time ambient temperature outside the mobile cabin is obtained by a temperature sensor deployed outside the mobile cabin; Specifically, the real-time ambient temperature is specifically zero degrees Celsius; In this embodiment, step S3 includes the following sub-steps: Step S31, turn on the exhaust system to reduce the real-time cabin pressure inside the mobile cabin until the real-time cabin pressure is equal to the real-time ambient pressure, and at the same time keep the real-time cabin temperature inside the mobile cabin the same as the real-time ambient temperature; Step S32, obtain the real-time ambient temperature SSH outside the mobile cabin, the real-time cabin pressure FCY inside the mobile cabin, and the second cabin pressure DEY, and convert the real-time ambient temperature into the first absolute temperature JDW through the conversion formula between the Celsius scale and the Kelvin scale. The formula is specifically as follows: JDW = 273.15 + SSH, where 273.15 is the absolute value of absolute zero; Step S33, calculate the second absolute temperature FCC inside the mobile cabin through the formula. The formula is specifically as follows: FCC = JDW × DEY / FCY; Among them, the unit of the real-time ambient temperature is degrees Celsius, and the units of the first absolute temperature and the second absolute temperature are Kelvin; Specifically, when the inside of the mobile cabin is a closed space, heating the inside of the mobile cabin causes the real-time cabin pressure inside the mobile cabin to increase. Therefore, the real-time cabin pressure can reach the second cabin pressure by raising the temperature; Step S34, convert the second absolute temperature into the test cabin temperature through the conversion formula between the Celsius scale and the Kelvin scale, and then stop heating when the real-time cabin temperature inside the mobile cabin is heated to the test cabin temperature; Step S35, take the time node when the real-time cabin temperature inside the mobile cabin is heated to the test cabin temperature as the initial time node, record the real-time cabin pressure inside the mobile cabin every preset test duration until the maximum closed duration is reached and stop recording, and record the time node when the maximum closed duration is reached as the termination time node; Step S36, obtain the real-time cabin temperature at the termination time node and the real-time cabin pressures at all time nodes within the maximum closed duration; Step S37: If the real-time cabin temperature at any time node is less than the real-time cabin temperature threshold or the real-time cabin pressure at any time node is less than the second cabin pressure, it is determined that the second airtightness test of the cabin fails; If the real-time cabin temperature at the termination time node is greater than or equal to the real-time cabin temperature threshold and the real-time cabin pressure at all time nodes is greater than or equal to the second cabin pressure, it is determined that the second airtightness test of the cabin passes and proceed to Step S4; It should be specifically noted that the real-time cabin temperature threshold is specifically obtained by heating the real-time cabin temperature inside the cabin to the test cabin temperature. Since the cabin radiates infrared heat energy to the outside, the real-time cabin temperature inside the cabin continues to decrease. Therefore, the real-time cabin temperature inside the cabin at the termination time node is the lowest value.

[0023] Step S4: Conduct a third airtightness test on the cabin and determine whether the third airtightness test passes according to the model that the pressure decay curve conforms to; Among them, the first cabin pressure is greater than the second cabin pressure, and the second cabin pressure is greater than the third cabin pressure; Specifically, the third cabin pressure inside the cabin is the minimum real-time cabin pressure inside the cabin, and the third cabin pressure is specifically 70.5 kPa; In this embodiment, Step S4 includes the following sub-steps: Step S41: If the real-time cabin pressure inside the cabin is greater than the third cabin pressure, turn on the exhaust system to reduce the real-time cabin pressure inside the cabin to the third cabin pressure; If the real-time cabin pressure inside the cabin is less than the third cabin pressure, increase the real-time cabin pressure inside the cabin to the third cabin pressure; If the real-time cabin pressure inside the cabin is equal to the third cabin pressure, no operation is performed; Step S42: Record the time node when the real-time cabin pressure inside the cabin reaches the third cabin pressure as the initial time node, record the real-time cabin pressure inside the cabin according to the preset frequency until the maximum airtight duration is reached and stop recording, and record the time node when the maximum airtight duration is reached as the termination time node; Exemplarily, the preset frequency is to collect the real-time cabin pressure inside the cabin twice per second; Step S43: Construct a pressure decay curve with the X-axis as the duration and the Y-axis as the real-time cabin pressure, and compare the pressure decay curve with the linear model P1(ti) = P0 - ati and the exponential model where i is the number of the time node, i = 1, 2, ……, n, and n is a positive integer; Step S44: When the pressure decay curve conforms to the linear model, obtain the slope of the pressure decay curve and compare it with the slope threshold of the linear model. If the slope of the pressure decay curve is less than or equal to the slope threshold, it is determined that the third airtightness test of the shelter passes; if the slope of the pressure decay curve is greater than the slope threshold, it is determined that the third airtightness test of the shelter fails. When the pressure decay curve conforms to the exponential model, proceed to the next step. Specifically, in the linear model P1(ti) = P0 - ati, P1(ti) is the real-time shelter pressure at time node ti, P0 is the real-time shelter pressure at the initial time node, and a is the natural constant. Exponential model In it, e is the natural constant, a is the pressure decay rate, which is a constant with a fixed value, P0 is the real-time shelter pressure at the initial time node, and P1(ti) is the real-time shelter pressure at time node ti. Step S45: Obtain the standard pressure decay curve P2(ti), and calculate the mean square error MSE between the standard pressure decay curve P2(ti) and the pressure decay curve P1(ti) through the mean square error formula. The formula is as follows: ; Step S46: When the mean square error is greater than or equal to the error threshold, it is determined that the third airtightness test of the shelter fails. When the mean square error is less than the error threshold, proceed to the next step. Step S4​​7: Calculate the average value PJP of the real-time shelter pressure, and calculate the determination coefficient R between the standard pressure decay curve P2(ti) and the pressure decay curve P1(ti) through the determination coefficient formula 2 , and the formula is as follows: ; Step S48: If the determination coefficient is greater than or equal to the determination coefficient threshold, it is determined that the third airtightness test of the shelter passes. If the determination coefficient is less than the determination coefficient threshold, it is determined that the third airtightness test of the shelter fails.

[0024] In this application, if there are corresponding calculation formulas, the above calculation formulas are all calculated by taking the numerical values after removing the dimensions. The weight coefficients, proportionality coefficients, etc. in the formulas are set in such a way that the size is a result value obtained by quantifying each parameter. Regarding the size of the weight coefficient and the proportionality coefficient, as long as it does not affect the proportional relationship between the parameter and the result value.

[0025] Embodiment 2: The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, it implements any of the method steps in the above embodiments. The method is as follows: Obtain the real-time environmental information outside the mobile cabin and the real-time cabin pressure inside the mobile cabin, and adjust the real-time cabin pressure of the mobile cabin; Increase the real-time cabin pressure inside the mobile cabin to the first cabin pressure, and perform the first airtightness test on the mobile cabin according to the real-time environmental information and the real-time cabin pressure; Obtain the second cabin pressure inside the mobile cabin, the real-time cabin temperature, and the real-time environmental temperature outside the mobile cabin, and then perform the second airtightness test on the mobile cabin. Determine whether the second airtightness test passes according to the comparison results of the real-time cabin pressure and the second cabin pressure, and the real-time cabin temperature and the real-time cabin temperature threshold; Perform the third airtightness test on the mobile cabin, and determine whether the third airtightness test passes according to the model that the pressure decay curve conforms to.

[0026] The present invention also provides a computer device. As Figure 3 shown, for the sake of convenience of description, only the parts related to the embodiments of the present invention are shown. For the specific technical details not disclosed, please refer to the method part of the embodiments of the present invention. The computer device can be any terminal device including a mobile phone, a tablet computer, a PDA, a POS, a vehicle-mounted computer, etc. Taking the computer device as a mobile phone as an example: Figure 3 The figure shows a schematic structural diagram related to the computer device provided by the embodiments of the present invention. The computer device includes: a memory, a processor, a communication bus, and a communication interface. Those skilled in the art can understand that Figure 3 the computer device structure shown in

[0027] does not constitute a limitation on the computer device, and may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements. Figure 3 Next, the various components of the computer device will be specifically introduced in combination with The 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 the memory. The memory mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system, application programs required for at least one function, etc.; the data storage area can store data, etc. In addition, the memory can include high-speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0028] The processor is the control center of a computer device. By running or executing software programs and / or modules stored in the memory, and by invoking the data stored in the memory, it performs various functions and processes data. Optionally, the processor may include one or more processing units; preferably, the processor may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface, application programs, etc., and the modem processor mainly processes wireless communications.

[0029] In the embodiments of the present invention, the processor included in the computer device may have the functions corresponding to any of the method steps in the above embodiments.

[0030] The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems may also be used in conjunction with the teachings provided herein. The structure required to construct such systems will be apparent from the above description. In addition, the present invention is not directed to any particular programming language. It should be understood that the content of the present invention described herein can be implemented using various programming languages, and the description of the specific language above is for the purpose of disclosing the best mode of the present invention.

[0031] In the specification provided herein, a large number of specific details are set forth. However, it can be understood that the embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and technologies have not been shown in detail so as not to obscure the understanding of this specification.

[0032] Similarly, it should be understood that, in order to streamline this disclosure and assist in understanding one or more of the various inventive aspects, in the above description of the exemplary embodiments of the present invention, the various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method 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, the inventive aspects lie in less than all the features of the single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of the present invention.

[0033] Those skilled in the art can understand that the modules in the devices in the embodiments can be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments can be combined into one module or unit or component, and in addition, they can be divided into multiple sub-modules or sub-units or sub-components. Except that at least some of such features and / or processes or units are mutually exclusive, any combination can be adopted to combine all the features disclosed in this specification (including the accompanying claims, abstract and drawings) and all the processes or units of any method or device so disclosed. Unless otherwise explicitly stated, each feature disclosed in this specification (including the accompanying claims, abstract and drawings) can be replaced by an alternative feature that provides the same, equivalent or similar purpose.

[0034] In addition, those skilled in the art can understand that although some of the embodiments herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present invention and forms different embodiments. For example, in the following claims, any one of the claimed embodiments can be used in any combination.

[0035] Each component embodiment of the present invention can be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) 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, and system according to the embodiments of the present invention. The present invention can also be implemented as a device or device program (such as a computer program and a computer program product) for executing part or all of the methods described herein. Such a program 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, or provided on a carrier signal, or provided in any other form.

[0036] It should be noted that the above embodiments are illustrative of the present invention and not restrictive thereof, and alternative embodiments can be designed by those skilled in the art without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same item of hardware. The use of the words first, second, and third, etc. does not denote any order. These words can be interpreted as names.

Claims

1. A method for detecting the airtightness of a shelter in a plateau environment, characterized in that, Methods include: Step S1, obtaining real-time environmental information outside the shelter and real-time shelter pressure inside the shelter, and adjusting the real-time shelter pressure; Step S2: increasing the real-time cabin pressure inside the cabin to a first cabin pressure, and performing a first airtightness test on the cabin based on the real-time environmental information and the real-time cabin pressure; Step S3: obtaining the second cabin pressure, the real-time cabin temperature, and the real-time ambient temperature outside the cabin, and then performing a second airtightness test on the cabin. A determination is made as to 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 the real-time cabin temperature threshold. Step S4: Perform a third airtightness test on the cabin, and determine whether the third airtightness test has been passed based on the model that the pressure decay curve conforms to.

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

3. A method for detecting the airtightness of a mobile cabin in a plateau environment according to claim 1, characterized in that, The step S1 includes the following sub-steps: Step S11: If the real-time cabin pressure inside the cabin is lower 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, at which point delivery is stopped. Step S12: If the real-time cabin pressure inside the cabin is greater than the real-time ambient pressure, exhaust the air inside the cabin through the exhaust system until the real-time cabin pressure inside the cabin is equal to the real-time ambient pressure; Step S13: If the real-time cabin pressure inside the cabin is equal to the real-time ambient pressure, no operation is performed.

4. A method for detecting the airtightness of a shelter in a plateau environment according to claim 3, characterized in that, The step S2 includes the following sub-steps: Step S21: Record the time when the real-time cabin pressure inside the cabin reaches the first cabin pressure, and record the corresponding time as the initial time. Record the real-time cabin pressure inside the cabin at intervals of a preset test duration until the maximum sealing duration is reached, and stop recording. The time when the maximum sealing duration is reached is recorded as the end time. Step S22: obtaining 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 first cabin pressure is less than or equal to the pressure difference, proceed to the next step. If the difference between the real-time cabin pressure at the end time node and the first cabin pressure is greater than the pressure difference, it is determined that the first cabin airtightness test has failed; Step S23: The real-time cabin pressure inside the cabin is increased to the first cabin pressure again. At the same time, the cabin exhaust system is turned on, and the output air rate of the exhaust system for exhausting the cabin air is set to a fixed value. At the same time, the input air rate of the compressed air system for delivering high-pressure air to the cabin is set to a fixed value. Step S24, obtaining the real-time cabin pressure at all time points within the maximum sealing duration; If the real-time cabin pressure at all time nodes is greater than or equal to the first cabin pressure, the first cabin airtightness test is determined 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.

5. A method for detecting the airtightness of a mobile cabin in a plateau environment according to claim 4, characterized in that, The step S2 further includes the following sub-steps: Step S25, obtaining the number of time nodes corresponding to when the real-time cabin pressure is less than the first cabin pressure; When the number of time nodes is less than the threshold, proceed to the next step; When the number of time nodes is greater than or equal to the quantity threshold, it is determined that the first airtightness test of the mobile cabin fails; Step S26: Obtain and traverse the real-time helium content outside the mobile cabin before helium injection, take the maximum real-time helium content as the maximum end point value of the helium content fluctuation range, and take the minimum real-time helium content as the minimum end point value of the helium content fluctuation range; Step S27: Restore the real-time mobile cabin pressure inside the mobile cabin to the first mobile cabin pressure, and inject helium into the mobile cabin; Step S28: Obtain the real-time helium content of all time nodes within the maximum airtight duration outside the mobile cabin after helium injection, and at the same time obtain the number of time nodes 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 belongs to the fluctuation quantity range, it is determined that the first airtightness test of the mobile cabin passes, and step S3 is entered; If the number of time nodes does not belong to the fluctuation quantity range, it is determined that the first airtightness test of the mobile cabin fails.

6. The airtightness detection method for a mobile cabin in a plateau environment according to claim 5, wherein, The said step S3 includes the following sub-steps: Step S31: Turn on the exhaust system, reduce the real-time mobile cabin pressure inside the mobile cabin until the real-time mobile cabin pressure is equal to the real-time ambient pressure, and at the same time keep the real-time mobile cabin temperature inside the mobile cabin the same as the real-time ambient temperature; Step S32: Obtain the real-time ambient temperature outside the mobile cabin, the real-time mobile cabin pressure inside the mobile cabin, and the second mobile cabin pressure, and convert the real-time ambient temperature to the first absolute temperature; Step S33: Then calculate the second absolute temperature inside the mobile cabin; Step S34: Convert the second absolute temperature to the test mobile cabin temperature, and then stop heating when the real-time mobile cabin temperature inside the mobile cabin is heated to the test mobile cabin temperature.

7. A method for detecting the airtightness of a mobile cabin in a plateau environment according to claim 6, characterized in that, The said step S3 also includes the following sub-steps: Step S35: Take the time node when the real-time mobile cabin temperature inside the mobile cabin is heated to the test mobile cabin temperature as the initial time node, record the real-time mobile cabin pressure inside the mobile cabin every preset test duration until the maximum airtight duration is reached and stop recording, and record the time node when the maximum airtight duration is reached as the termination time node; Step S36: Obtain the real-time mobile cabin temperature at the termination time node, and the real-time mobile cabin pressure of all time nodes within the maximum airtight duration; Step S37: If the real-time mobile cabin temperature at any time node is less than the real-time mobile cabin temperature threshold or the real-time mobile cabin pressure at any time node is less than the second mobile cabin pressure, it is determined that the second airtightness test of the mobile cabin fails; If the real-time mobile cabin temperature at the termination time node is greater than or equal to the real-time mobile cabin temperature threshold, and the real-time mobile cabin pressure of all time nodes is greater than or equal to the second mobile cabin pressure, it is determined that the second airtightness test of the mobile cabin passes, and step S4 is entered.

8. A method for detecting the airtightness of a mobile cabin in a plateau environment according to claim 7, characterized in that, The said step S4 includes the following sub-steps: Step S41: If the real-time mobile cabin pressure inside the mobile cabin is greater than the third mobile cabin pressure, turn on the exhaust system and reduce the real-time mobile cabin pressure inside the mobile cabin to the third mobile cabin pressure; If the real-time mobile cabin pressure inside the mobile cabin is less than the third mobile cabin pressure, increase the real-time mobile cabin pressure inside the mobile cabin to the third mobile cabin pressure; If the real-time mobile cabin pressure inside the mobile cabin is equal to the third mobile cabin pressure, do not perform any operation; Step S42: Record the time node when the real-time cabin pressure inside the cabin reaches the third cabin pressure as the initial time node, record the real-time cabin pressure inside the cabin according to the preset frequency until the recording stops when the maximum airtight duration is reached, and record the time node when the maximum airtight duration is reached as the termination time node; Step S43: Use the X-axis as the duration and the Y-axis as the real-time cabin pressure to construct a pressure decay curve, and compare the pressure decay curve with the linear model and the exponential model respectively.

9. A method for detecting the airtightness of a mobile cabin in a plateau environment according to claim 8, characterized in that, Step S4 further includes the following sub-steps: Step S44: When the pressure decay curve conforms to the linear model, obtain the slope of the pressure decay curve and compare the slope of the pressure decay curve with the slope threshold of the linear model; If the slope of the pressure decay curve is less than or equal to the slope threshold, it is determined that the third airtightness test of the cabin passes; If the slope of the pressure decay curve is greater than the slope threshold, it is determined that the third airtightness test of the cabin fails; 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, it is determined that the third airtightness test of the cabin fails; When the mean square error is less than the error threshold, proceed to the next step; Step S47: Calculate the average value of the 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, it is determined that the third airtightness test of the cabin passes; If the coefficient of determination is less than the coefficient of determination threshold, it is determined that the third airtightness test of the cabin fails.

10. A method for detecting the airtightness of a mobile cabin in a plateau environment according to claim 9, characterized in that, The first cabin pressure is greater than the second cabin pressure, and the second cabin pressure is greater than the third cabin pressure.

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