Extremely-low-humidity plateau environment test box and environment control method thereof

Abstract

The invention discloses an extremely-low-humidity plateau environment test box, an environment control method thereof, electronic equipment and a storage medium. The test box comprises a pressure-bearing test box body, a humidity sensor, a vacuum system, a humidifier, a dry gas supply system, a heating system and a refrigerating system. The humidity sensor is used for detecting the humidity in the pressure-bearing test box body; the vacuum system is used for vacuumizing the interior based on system parameters, so that the vacuum degree of the interior meets test requirements; the humidifier is used for humidifying the interior of the box body when the humidity is lower than the test requirement, so that the humidity meets the test requirement; the dry air supply system is used for inputting dry air into the box body; the heating system is used for heating internal air; and the refrigerating system is used for cooling the internal air. The vacuum system, the humidifier, the dry gas supply system, the heater and the refrigerating system work cooperatively, and the temperature, the pressure and the humidity in the pressure-bearing test box body can be adjusted, so that the pressure-bearing test box body meets the test requirements on equipment in an extremely-low-humidity plateau environment.

Description

Technical Field

[0001] This application relates to the field of equipment testing technology, and more specifically, to an extremely low humidity high-altitude environment test chamber and its environmental control method, electronic equipment and storage medium. Background Technology

[0002] The plateau environment refers to the collective conditions of climate, temperature, humidity, and wind formed under plateau conditions. Many plateaus exhibit diverse climates due to differences in their geographical location, marine and terrestrial environment, altitude, and plateau morphology. Researching the complex plateau climate environment is of positive significance for human beings in resisting natural disasters, disaster prevention and mitigation, the rational development and utilization of climate resources, and the testing of product performance.

[0003] Especially in fields such as aviation, aerospace, automotive, and medical, there is often a need to explore the stable operation of complex equipment in extremely low humidity, high-altitude environments to help test personnel understand the adaptability of complex equipment in such extreme environments. However, currently, when conducting high-altitude tests on such complex equipment, it is necessary to find actual environments, which is not only time-consuming and labor-intensive, but the actual environment may not strictly meet the test conditions. Summary of the Invention

[0004] In view of this, this application provides an extremely low humidity high-altitude environment test chamber and its environmental control method, electronic equipment and storage medium, which are used to provide testers with a test device that can conduct extremely low humidity high-altitude environment tests on complex equipment.

[0005] To achieve the above objectives, the following solution is proposed:

[0006] A high-altitude environment test chamber with extremely low humidity is provided for providing an extremely low humidity high-altitude environment. The high-altitude environment test chamber includes a pressure test chamber body, a humidity sensor, a vacuum system, a humidifier, a dry gas supply system, a heating system, and a refrigeration system, wherein:

[0007] The humidity sensor is installed inside the pressure test chamber and is used to detect the humidity inside the chamber.

[0008] The vacuum system is used to evacuate the interior based on system parameters so that the vacuum level inside meets the test requirements;

[0009] The humidifier is installed inside the room and is used to humidify the room when the humidity is lower than the test requirements, so that the humidity meets the test requirements.

[0010] The dry gas supply system is connected to the interior of the pressure test chamber and is used to input dry air into the interior.

[0011] The heating system is used to heat the temperature of the air inside the room;

[0012] The refrigeration system is used to cool the temperature of the air inside the room.

[0013] Optionally, the heating system includes a heating control device disposed outside the pressure test chamber and a heater disposed inside the pressure test chamber and connected to the heating control device.

[0014] Optionally, the refrigeration system includes a refrigeration control device disposed outside the pressure test chamber and an evaporator disposed inside the pressure test chamber and connected to the refrigeration control device.

[0015] Optionally, the drying gas supply system includes an external compressed air source and a gas drying device, wherein:

[0016] The external compressed air source stores compressed air, and its outlet is connected to the inlet of the gas drying device.

[0017] The outlet of the gas drying device is connected to the pressure test chamber, and is used to dry the input compressed air and input the dried air into the pressure test chamber.

[0018] Optionally, the gas drying device includes an air filter, a moisture filter, a pressure regulating valve, a flow meter, and a gas switch, wherein:

[0019] The inlet of the air filter is used as the inlet of the gas drying device, and the outlet is connected to the inlet of the moisture filter;

[0020] The outlet of the moisture filter is connected to the inlet of the pressure regulating valve;

[0021] The outlet of the pressure regulating valve is connected to the inlet of the flow meter;

[0022] The outlet of the flow meter is connected to the inlet of the gas switch;

[0023] The outlet of the gas switch is used as the outlet of the gas drying device.

[0024] Optionally, it also includes a vacuum circulation device installed on the pressure test chamber, wherein:

[0025] The vacuum circulation device is used to drive the gas flow inside the pressure test chamber.

[0026] An environmental control method, applied to the high-altitude environmental test chamber described above, the environmental control method comprising the steps of:

[0027] Respond to the user's parameter setting request and receive some or all of the temperature setting, humidity setting, and pressure setting values ​​input by the user;

[0028] The vacuum system, heating system, and refrigeration system are controlled to operate so that the internal temperature and pressure of the pressure test chamber match the set temperature and set pressure values, respectively.

[0029] The dry gas supply system, the vacuum system, the refrigeration system, and the heating system are controlled to work in a coordinated manner so that the humidity matches the humidity setpoint.

[0030] Optionally, controlling the dry gas supply system, the vacuum system, the humidifier, the refrigeration system, and the heating system to work in coordination to match the humidity with the set humidity value includes the following steps:

[0031] The humidity inside the pressure test chamber is obtained based on the humidity sensor.

[0032] Determine whether the humidity is greater than or less than the humidity set value;

[0033] If the humidity is greater than the humidity set value, the dry gas supply system is controlled to inject dry air into the pressure test chamber so that the pressure approaches atmospheric pressure.

[0034] Control the vacuum system to operate so that the pressure matches the pressure set value, and return to the step of obtaining the humidity inside the pressure test chamber based on the humidity sensor;

[0035] If the humidity is less than the set humidity value, the humidifier is controlled to operate so that the humidity matches the set humidity value.

[0036] Optionally, the humidity setting is equal to or less than 1%RH. The temperature setting is equal to or less than -40℃, and the pressure setting is equal to or less than 70KPa.

[0037] As can be seen from the above technical solution, this application discloses an extremely low humidity high-altitude environment test chamber and its environmental control method, electronic equipment, and storage medium. The test chamber includes a pressure test chamber body, a humidity sensor, a vacuum system, a humidifier, a dry gas supply system, a heating system, and a cooling system. The humidity sensor is located inside the pressure test chamber body to detect the internal humidity; the vacuum system is used to evacuate the interior based on system parameters to ensure the internal vacuum level meets the test requirements; the humidifier is located inside the chamber to humidify the interior when the humidity is lower than the test requirements, ensuring the humidity meets the test requirements; the dry gas supply system is connected to the interior of the pressure test chamber body to supply dry air; the heating system heats the internal air; and the cooling system cools the internal air. Through the aforementioned vacuum system, humidifier, dry gas supply system, heater, and cooling system, the temperature, pressure, and humidity inside the pressure test chamber can be regulated to meet the test requirements for equipment in an extremely low humidity high-altitude environment. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of an ultra-low humidity high-altitude environment test chamber according to an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of a gas drying apparatus according to an embodiment of this application;

[0041] Figure 3 This is a schematic diagram of another extremely low humidity high-altitude environment test chamber according to an embodiment of this application;

[0042] Figure 4 This is a flowchart of an environmental control method according to an embodiment of this application;

[0043] Figure 5 This is a flowchart of a humidity control method according to an embodiment of this application;

[0044] Figure 6 This is a block diagram of an electronic device according to an embodiment of this application. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0046] Figure 1 This is a schematic diagram of an ultra-low humidity high-altitude environment test chamber according to an embodiment of this application.

[0047] like Figure 1 As shown, this embodiment provides an extremely low humidity high-altitude environment test chamber, used to provide users with an extremely low humidity high-altitude environment for equipment testing. This is a special environment matching the unique characteristics of high altitudes, such as extremely low humidity, low pressure, and low temperature. Specifically, the extremely low humidity high-altitude environment in this application is defined as humidity equal to or less than 1%RH, temperature equal to or less than -40℃, and pressure equal to or less than 70KPa. The high-altitude environment test chamber includes a pressure test chamber body 100, a humidity sensor 101, a vacuum system 102, a humidifier 103, a dry gas supply system 104, a heating system 105, and a cooling system 106.

[0048] This pressure test chamber provides space for users to conduct high-altitude tests, and this space is capable of supporting the equipment to be tested. The humidity sensor, vacuum system, humidifier, dry gas supply system, heating system, and refrigeration system are located on or inside the pressure test chamber.

[0049] A humidity sensor is installed inside the pressure test chamber to detect the internal humidity.

[0050] The vacuum system is used to evacuate the interior based on system parameters to ensure that the internal vacuum level meets the test requirements.

[0051] A humidifier is installed inside the pressure test chamber to humidify the interior when the humidity is lower than the test requirements, so that the humidity meets the test requirements.

[0052] The dry gas supply system is connected to the interior of the pressure test chamber and is used to supply dry air to the interior. The dry gas supply system includes an external compressed air source and a gas drying device. The external compressed air source stores compressed air, and its outlet is connected to the inlet of the gas drying device. The outlet of the gas drying device is connected to the interior of the pressure test chamber, and is used to dry the input compressed air before supplying it to the pressure test chamber.

[0053] Specifically, such as Figure 2As shown, the gas drying device includes an air filter, a moisture filter, a pressure regulating valve, a flow meter, and a gas switch. The inlet of the air filter serves as the inlet of the gas drying device, and its outlet is connected to the inlet of the moisture filter; the outlet of the moisture filter is connected to the inlet of the pressure regulating valve; the outlet of the pressure regulating valve is connected to the inlet of the flow meter; the outlet of the flow meter is connected to the inlet of the gas switch; and the outlet of the gas switch serves as the outlet of the gas drying device.

[0054] The heating system is used to heat the internal air to raise the temperature of the pressure test chamber to the required test temperature if the internal temperature is too low. The heating system includes a heating control device and a heater, which are connected together. The heating control device is located outside the pressure test chamber, while the heater is located inside the pressure test chamber.

[0055] The refrigeration system is used to cool the air inside the pressure test chamber, reducing the internal temperature to the required test temperature if it becomes too high. The refrigeration system includes a refrigeration control device and an evaporator connected together. The refrigeration control device is located outside the pressure test chamber, while the evaporator is located inside the chamber.

[0056] As can be seen from the above technical solution, this embodiment provides an extremely low humidity high-altitude environment test chamber, including a pressure test chamber, a humidity sensor, a vacuum system, a humidifier, a dry gas supply system, a heating system, and a refrigeration system. The humidity sensor is located inside the pressure test chamber to detect the internal humidity; the vacuum system is used to evacuate the interior based on system parameters to ensure the internal vacuum level meets the test requirements; the humidifier is located inside to humidify the interior when the humidity is lower than the test requirements, ensuring the humidity meets the test requirements; the dry gas supply system is connected to the interior of the pressure test chamber to supply dry air; the heating system heats the internal air; and the refrigeration system cools the internal air. Through the aforementioned vacuum system, humidifier, dry gas supply system, heater, and refrigeration system, the temperature, pressure, and humidity inside the pressure test chamber can be adjusted to meet the test requirements for equipment in an extremely low humidity high-altitude environment.

[0057] In addition, in one specific embodiment, a vacuum circulation device 107 is also included, specifically as follows: Figure 3 As shown.

[0058] The vacuum circulation device is installed on the pressure test chamber and includes a drive motor and blades connected to the drive motor. When the drive motor drives the blades to rotate, the blades will drive the gas flow in the chamber, thereby stirring the air in the chamber evenly. This ensures that the temperature, pressure and humidity of each part in the chamber are consistent.

[0059] Figure 4 This is a flowchart of an environmental control method according to an embodiment of this application.

[0060] like Figure 4 As shown, the environmental control method provided in this embodiment is applied to the extremely low humidity high-altitude environmental test chamber provided in the above embodiment to control the temperature, pressure, and humidity within the chamber so that the environment inside the chamber meets the requirements of high-altitude testing. The environmental control method specifically includes the following steps:

[0061] S1: Accepts user input of environment setting parameters.

[0062] When a user inputs a parameter setting request through the corresponding terminal device and its interface, the system receives the user's input environmental setting parameters based on that request. These environmental setting parameters specifically include temperature, pressure, and humidity settings. It is recommended that, in practice, for the actual needs of high-altitude environments with high humidity, the humidity setting should be equal to or less than 1%RH, the temperature setting equal to or less than -40℃, and the pressure setting equal to or less than 70KPa.

[0063] S2. The pressure and temperature of the high-altitude environment test should meet the test requirements.

[0064] Specifically, it controls the operation of the vacuum system, heating system, and refrigeration system of the test chamber to match the internal temperature and pressure of the pressure test chamber with the set temperature and pressure values, respectively.

[0065] S3. The humidity of the high-altitude environment is controlled to meet the test requirements.

[0066] Specifically, this involves coordinating the operation of the drying gas supply system, vacuum system, refrigeration system, and heating system to ensure that the humidity inside the chamber matches the set humidity value. The specific humidity control scheme is as follows: Figure 5 As shown.

[0067] S301. Obtain the internal humidity of the pressure test chamber based on a humidity sensor.

[0068] That is, to collect the humidity data collected by the humidity sensor.

[0069] S302. Determine the relationship between humidity and humidity setting value.

[0070] This involves determining whether the humidity level is greater than, equal to, or less than the set humidity value. If the humidity level is greater than the set value, it indicates that the humidity inside the cabinet is too high, and step S303 is executed to reduce the humidity. If the humidity level is less than the set value, step S305 is executed to humidify the air inside the cabinet using a humidifier. Through dehumidification or humidification, the humidity inside the cabinet is brought to the required set humidity value.

[0071] S303. Introduce dry air into the chamber.

[0072] When the humidity inside the chamber exceeds the set humidity value, the dry gas supply system is controlled to inject dry air into the chamber. Specifically, the gas switch in the gas drying device is turned on so that the pressure inside the chamber approaches atmospheric pressure.

[0073] When injecting dry air into the chamber, it's not always necessary to restore the pressure to standard atmospheric pressure. While restoring the pressure to standard atmospheric pressure with each inflation helps the humidity inside the chamber decrease rapidly, excessive air extraction when the humidity is about to meet the target (e.g., target humidity 10%RH, current humidity 15%RH) may cause the chamber to become too dry, triggering the humidifier – an undesirable outcome. Therefore, when the humidity is about to reach the set value, parameters can be manually adjusted, such as restoring only 10% of the pressure, or even less, to reduce pressure fluctuations and fine-tune the humidity. Once the chamber temperature, humidity, and pressure have all reached the set requirements and entered a stable operating phase, pressure adjustments should also be minor to avoid excessive impact on the system pressure.

[0074] S304, Control the operation of the vacuum system.

[0075] When the pressure inside the chamber reaches or approaches atmospheric pressure, the vacuum system is activated to maintain the pressure at the aforementioned set value. Due to the injection of dry air, the temperature inside the chamber also changes; therefore, the refrigeration and heating systems operate in conjunction with the vacuum system until both the temperature and pressure inside the test chamber meet the requirements.

[0076] S305, Controls the operation of the humidifier.

[0077] That is, when the humidity inside the chamber is lower than the above-mentioned humidity setting value, the humidifier is controlled to work so that the humidity inside the chamber meets the humidity setting value.

[0078] As can be seen from the above technical solution, this embodiment provides an environmental control method applied to an extremely low humidity high-altitude environmental test chamber. Specifically, this method involves: acquiring the internal humidity of the pressure test chamber based on a humidity sensor; determining whether the humidity is greater than or less than a set humidity value; if the humidity is greater than the set humidity value, controlling the drying gas supply system to inject dry air into the pressure test chamber to bring the pressure close to atmospheric pressure; controlling the vacuum system to match the pressure with the set pressure value, and returning to the step of acquiring the internal humidity of the pressure test chamber based on the humidity sensor; if the humidity is less than the set humidity value, controlling the humidifier to match the humidity with the set humidity value. Through these operations, the pressure, temperature, and humidity inside the chamber can meet the requirements of the high-altitude test.

[0079] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0080] Although the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. In certain environments, multitasking and parallel processing may be advantageous.

[0081] It should be understood that the steps described in the method embodiments of this disclosure may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of this disclosure is not limited in this respect.

[0082] Computer program code for performing the operations of this disclosure can be written in one or more programming languages ​​or a combination thereof, including but not limited to object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer.

[0083] Figure 6 This is a block diagram of an electronic device according to an embodiment of this application.

[0084] The following is for reference. Figure 6 This document illustrates a structural diagram suitable for implementing the electronic device in the embodiments of this disclosure. The terminal device in the embodiments of this disclosure may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. This electronic device is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this disclosure.

[0085] The electronic device may include a processing unit (e.g., a central processing unit, a graphics processing unit, etc.) 601, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 602 or a program loaded from an input device 606 into a random access memory (RAM) 603. The RAM also stores various programs and data required for the operation of the electronic device. The processing unit, ROM, and RAM are interconnected via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0086] Typically, the following devices can be connected to the I / O interface: input devices including, for example, touchscreens, touchpads, keyboards, mice, cameras, microphones, accelerometers, gyroscopes, etc.; output devices 607 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 608 including, for example, magnetic tapes, hard disks, etc.; and communication devices 609. Communication device 609 allows the electronic device to communicate wirelessly or wiredly with other devices to exchange data. Although electronic devices with various devices are shown in the figures, it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed alternatively.

[0087] This application also provides an embodiment of a computer-readable storage medium.

[0088] The aforementioned computer-readable storage medium is used in the electronic equipment of the high-altitude environmental test chamber of the above embodiments, and carries one or more computer programs. When the electronic equipment executes the one or more computer programs, it causes the electronic equipment to acquire the internal humidity of the pressure test chamber based on a humidity sensor; determine whether the humidity is greater than or less than a humidity setpoint; if the humidity is greater than the humidity setpoint, control the drying gas supply system to inject dry air into the pressure test chamber to make the pressure approach atmospheric pressure; control the vacuum system to operate to match the pressure with the pressure setpoint, and return to the step of acquiring the internal humidity of the pressure test chamber based on the humidity sensor; if the humidity is less than the humidity setpoint, control the humidifier to operate to match the humidity with the humidity setpoint. Through the above operations, the pressure, temperature, and humidity inside the chamber can meet the requirements of the high-altitude test.

[0089] It should be noted that the computer-readable medium described above in this disclosure can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0090] In this disclosure, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in connection with an instruction execution system, apparatus, or device. In this disclosure, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to: wires, optical fibers, RF (radio frequency), etc., or any suitable combination thereof.

[0091] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0092] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0093] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0094] The technical solution provided by the present invention has been described in detail above. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A low humidity high-altitude environment test chamber, used to provide an extremely low humidity high-altitude environment, characterized in that, The high-altitude environment test chamber includes a pressure test chamber body, a humidity sensor, a vacuum system, a humidifier, a dry gas supply system, a heating system, and a refrigeration system, wherein: The humidity sensor is installed inside the pressure test chamber and is used to detect the humidity inside the chamber. The vacuum system is used to evacuate the interior based on system parameters so that the vacuum level inside meets the test requirements; The humidifier is installed inside the room and is used to humidify the room when the humidity is lower than the test requirements, so that the humidity meets the test requirements. The dry gas supply system is connected to the interior of the pressure test chamber and is used to input dry air into the interior. The heating system is used to heat the temperature of the air inside the room; The refrigeration system is used to cool the temperature of the air inside the room.

2. The ultra-low humidity high-altitude environment test chamber as described in claim 1, characterized in that, The heating system includes a heating control device located outside the pressure test chamber and a heater located inside the pressure test chamber and connected to the heating control device.

3. The ultra-low humidity high-altitude environment test chamber as described in claim 1, characterized in that, The refrigeration system includes a refrigeration control device located outside the pressure test chamber and an evaporator located inside the pressure test chamber and connected to the refrigeration control device.

4. The ultra-low humidity high-altitude environment test chamber as described in claim 1, characterized in that, The drying gas supply system includes an external compressed air source and a gas drying device, wherein: The external compressed air source stores compressed air, and its outlet is connected to the inlet of the gas drying device. The outlet of the gas drying device is connected to the pressure test chamber, and is used to dry the input compressed air and input the dried air into the pressure test chamber.

5. The ultra-low humidity high-altitude environment test chamber as described in claim 4, characterized in that, The gas drying device includes an air filter, a moisture filter, a pressure regulating valve, a flow meter, and a gas switch, wherein: The inlet of the air filter is used as the inlet of the gas drying device, and the outlet is connected to the inlet of the moisture filter; The outlet of the moisture filter is connected to the inlet of the pressure regulating valve; The outlet of the pressure regulating valve is connected to the inlet of the flow meter; The outlet of the flow meter is connected to the inlet of the gas switch; The outlet of the gas switch is used as the outlet of the gas drying device.

6. The ultra-low humidity high-altitude environment test chamber as described in any one of claims 1 to 5, characterized in that, It also includes a vacuum circulation device installed on the pressure test chamber, wherein: The vacuum circulation device is used to drive the gas flow inside the pressure test chamber.

7. An environmental control method, applied to the ultra-low humidity high-altitude environmental test chamber as described in any one of claims 1 to 6, characterized in that, The environmental control method includes the following steps: Respond to the user's parameter setting request and receive some or all of the temperature setting, humidity setting, and pressure setting values ​​input by the user; The vacuum system, heating system, and refrigeration system are controlled to operate so that the internal temperature and pressure of the pressure test chamber match the set temperature and set pressure values, respectively. The dry gas supply system, the vacuum system, the refrigeration system, and the heating system are controlled to work in a coordinated manner so that the humidity matches the humidity setpoint.

8. The environmental control method as described in claim 7, characterized in that, The method of coordinating the operation of the dry gas supply system, the vacuum system, the humidifier, the refrigeration system, and the heating system to match the humidity with the set humidity value includes the following steps: The humidity inside the pressure test chamber is obtained based on the humidity sensor. Determine whether the humidity is greater than or less than the humidity set value; If the humidity is greater than the humidity set value, the dry gas supply system is controlled to inject dry air into the pressure test chamber so that the pressure approaches atmospheric pressure. Control the vacuum system to operate so that the pressure matches the pressure set value, and return to the step of obtaining the humidity inside the pressure test chamber based on the humidity sensor; If the humidity is less than the set humidity value, the humidifier is controlled to operate so that the humidity matches the set humidity value.

9. The environmental control method as described in claim 7, characterized in that, The humidity setting value is equal to or less than 1%RH.

10. The environmental control method as described in claim 9, characterized in that, The temperature setting is equal to or less than -40℃, and the pressure setting is equal to or less than 70KPa.

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