Dehumidification control method, device, system and electronic device for air conditioning unit

Abstract

The application relates to a dehumidification control method, device and system of an air conditioning unit, an electronic device and a storage medium, which comprises the following steps: obtaining a first humidity content in a railway vehicle carriage, a second humidity content of fresh air in the air conditioning unit and a third humidity content of supply air in the air conditioning unit, inputting the first humidity content, the second humidity content and the third humidity content into a preset humidity control model, obtaining a target dehumidification amount output by the humidity control model, and finally controlling a compressor to perform a dehumidification operation according to a corresponding relationship between the target dehumidification amount and a preset working frequency of the compressor in the air conditioning unit. Through the application, the problem of low reliability of the dehumidification function of the air conditioning unit in the related art is solved, and the technical effect of improving the reliability of the dehumidification function of the air conditioning unit is achieved.

Description

Technical Field

[0001] This application relates to the field of air conditioning control technology, and in particular to a dehumidification control method, device, system, electronic device, and storage medium for an air conditioning unit. Background Technology

[0002] Rail transit refers to a type of transportation or system where vehicles need to run on specific tracks. The most typical rail transit system is the railway system, which consists of traditional trains and standard railways. With the diversified development of train and railway technologies, rail transit has taken on more and more types, not only covering long-distance land transportation but also being widely used in short- and medium-distance urban public transportation.

[0003] With the continuous development of rail transit, improving the passenger experience has become an urgent problem for various vehicle operating companies. To enhance the comfort of the interior environment, rail vehicles are often equipped with air conditioning systems. As a common intelligent device for regulating indoor temperature and humidity, air conditioning has been widely used in various types of rail vehicles.

[0004] Currently, air conditioning systems in rail vehicles, especially those with dehumidification requirements, operate in full cooling mode when the humidity inside the carriage exceeds the set humidity level. They only switch to normal temperature control mode when the interior temperature reaches a set limit (this limit is set for compressor low-temperature protection and is below the target interior temperature) or the humidity falls below the set humidity level. However, in this system, if the interior heat load is low and the humidity remains above the set value, the air conditioning's continuous operation in full cooling mode can cause the interior temperature to drop rapidly, deviating from the target temperature. Therefore, the dehumidification function of the air conditioning system is unreliable, thus reducing the passenger experience.

[0005] Currently, no effective solution has been proposed to address the low reliability of the dehumidification function in air conditioning units in related technologies. Summary of the Invention

[0006] This application provides a dehumidification control method, apparatus, system, electronic device, and storage medium for air conditioning units, to at least solve the problem of low reliability of dehumidification function in related technologies.

[0007] In a first aspect, embodiments of this application provide a dehumidification control method for an air conditioning unit, applied to humidity control within a rail vehicle carriage. The method includes: acquiring a first humidity level within the rail vehicle carriage, a second humidity level of fresh air in the air conditioning unit, and a third humidity level of supplied air in the air conditioning unit; inputting the first humidity level, the second humidity level, and the third humidity level into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model; and controlling the compressor to perform dehumidification operation at a frequency corresponding to the target dehumidification amount based on the target dehumidification amount and a preset correspondence between the operating frequency of the compressor in the air conditioning unit and the dehumidification amount.

[0008] In some embodiments, inputting the first moisture content, the second moisture content, and the third moisture content into a preset humidity control model to obtain the target dehumidification output by the humidity control model includes: calculating a fourth moisture content of the mixed air in the air conditioning unit based on the first moisture content and the second moisture content; inputting the third moisture content and the fourth moisture content into the humidity control model to obtain the target dehumidification output by the humidity control model; the humidity control model is represented as:

[0009] G S *(d c -d s ) = W f *AT K *BT0; where G S For air supply mass flow rate, d c The fourth moisture content, d s The third moisture content, d n The first moisture content, d T For the target moisture content, K p K is a proportionality constant. i K is the integration constant. d Let W be a differential constant, G be the air mass inside the rail vehicle car, and W be a differential constant. f For the target dehumidification capacity, AT K BT0 is the ambient temperature correction amount, and BT0 is the mixed air temperature correction amount.

[0010] In some embodiments, inputting the third and fourth moisture contents into the humidity control model to obtain the target dehumidification output by the humidity control model includes: acquiring the current ambient temperature and the current mixed air temperature; determining an ambient temperature correction amount corresponding to the current ambient temperature and a mixed air temperature correction amount corresponding to the current mixed air temperature based on the current ambient temperature and the current mixed air temperature; and inputting the ambient temperature correction amount, the mixed air temperature correction amount, the third moisture content, and the fourth moisture content into the humidity control model to obtain the target dehumidification output by the humidity control model.

[0011] In some embodiments, obtaining the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the air supplied by the air conditioning unit includes: obtaining the first temperature and humidity inside the rail vehicle car and the second temperature and humidity of the fresh air in the air conditioning unit; querying a preset first enthalpy-humidity chart and / or a first enthalpy-humidity table to obtain the first humidity content matching the first temperature and humidity, and querying a preset second enthalpy-humidity chart and / or a second enthalpy-humidity table to obtain the second humidity content matching the second temperature and humidity; and obtaining the third humidity content of the air supplied by the air conditioning unit.

[0012] In some embodiments, obtaining the third moisture content of the air supplied in the air conditioning unit includes: obtaining the third temperature and humidity of the air supplied in the air conditioning unit, and querying a preset third enthalpy-humidity chart and / or third enthalpy-humidity table to obtain the third moisture content that matches the third temperature and humidity; or obtaining the third temperature and machine dew point temperature of the air supplied in the air conditioning unit, and determining the third moisture content of the air supplied in the air conditioning unit based on the third temperature and the machine dew point temperature.

[0013] In some embodiments, before obtaining the first moisture content inside the rail vehicle car, the second moisture content of the fresh air in the air conditioning unit, and the third moisture content of the air supplied by the air conditioning unit, the method further includes: performing dehumidification operation using the compressor at different operating frequencies under different ambient temperatures and different mixed air temperatures; and determining the correspondence between the operating frequency of the compressor and the dehumidification amount at the current ambient temperature and the current mixed air temperature based on the dehumidification amount corresponding to each operating frequency of the compressor at the current ambient temperature and the current mixed air temperature.

[0014] Secondly, this application provides a dehumidification control device for an air conditioning unit, applied to humidity control within a rail vehicle carriage. The device includes: an acquisition module for acquiring a first humidity level within the rail vehicle carriage, a second humidity level of the fresh air in the air conditioning unit, and a third humidity level of the supplied air in the air conditioning unit; an output module for inputting the first humidity level, the second humidity level, and the third humidity level into a preset humidity control model to obtain a target dehumidification amount output by the humidity control model; and a control module for controlling the compressor to perform dehumidification operation at a frequency corresponding to the target dehumidification amount, based on the target dehumidification amount and a preset correspondence between the operating frequency of the compressor in the air conditioning unit and the dehumidification amount.

[0015] Thirdly, this application provides a dehumidification control system for an air conditioning unit, applied to humidity control within a rail vehicle carriage. The system includes: multiple temperature and humidity sensors, a controller, and a compressor; wherein the multiple temperature and humidity sensors are disposed within the air conditioning unit and within the rail vehicle carriage; the compressor is disposed within the air conditioning unit; and the controller is communicatively connected to each of the temperature and humidity sensors and the compressor, for executing the dehumidification control method for the air conditioning unit as described in the first aspect above.

[0016] Fourthly, embodiments of this application also provide an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to perform the dehumidification control method for an air conditioning unit as described in the first aspect above.

[0017] Fifthly, embodiments of this application also provide a storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the dehumidification control method for the air conditioning unit as described in the first aspect above.

[0018] Compared to related technologies, the dehumidification control method, apparatus, system, electronic device, and storage medium for air conditioning units provided in this application acquire the first humidity content inside the rail vehicle carriage, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the supplied air in the air conditioning unit. These three humidity contents are then input into a preset humidity control model to obtain the target dehumidification amount output by the model. Finally, based on the target dehumidification amount and a preset correspondence between the compressor's operating frequency and the dehumidification amount, the compressor is controlled to perform dehumidification operations at the operating frequency corresponding to the target dehumidification amount. This solves the problem of low reliability of the dehumidification function in air conditioning units in related technologies, achieving the technical effect of improving the reliability of the dehumidification function of air conditioning units.

[0019] Details of one or more embodiments of this application are set forth in the following drawings and description to make other features, objects and advantages of this application more readily apparent. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is a flowchart of a dehumidification control method for an air conditioning unit according to an embodiment of this application;

[0022] Figure 2 This is a structural block diagram of the dehumidification control device of an air conditioning unit according to an embodiment of this application;

[0023] Figure 3 This is a schematic diagram of the structure of an electronic device according to an embodiment of this application. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application. Furthermore, it is understood that although the efforts made in such a development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, modifications to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0025] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0026] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. “Multiple” used in this application means two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can represent: A alone, A and B simultaneously, and B alone. The terms “first,” “second,” “third,” etc., used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0027] This embodiment provides a dehumidification control method for an air conditioning unit, applied to humidity control within a rail vehicle carriage. Figure 1 This is a flowchart of a dehumidification control method for an air conditioning unit according to an embodiment of this application, such as... Figure 1 As shown, the method includes:

[0028] Step S101: Obtain the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the air supplied by the air conditioning unit.

[0029] In this embodiment, the first humidity content inside the rail vehicle carriage can be obtained by collecting data from a temperature and humidity sensor installed inside the carriage and processing the data by a controller. The second humidity content of the fresh air in the air conditioning unit can be obtained by collecting data from a temperature and humidity sensor installed in the fresh air system and processing the data by a controller. The third humidity content of the air supplied in the air conditioning unit can be obtained by collecting data from a temperature and humidity sensor installed in the air supply system and processing the data by a controller.

[0030] Step S102: Input the first moisture content, the second moisture content, and the third moisture content into the preset humidity control model to obtain the target dehumidification amount output by the humidity control model.

[0031] In this embodiment, the humidity control model can be represented as:

[0032]

[0033] G S *(d c -d s ) = W f *AT K *BT0;

[0034] Among them, G S For air supply mass flow rate, d c The fourth moisture content, d s The third moisture content, d n The first moisture content, d T For the target moisture content, K p K is a proportionality constant. i K is the integration constant. d Let W be a differential constant, G be the air mass inside the rail vehicle car, and W be a differential constant. f For the target dehumidification capacity, AT K BT0 is the ambient temperature correction, BT0 is the mixed air temperature correction, and the fourth moisture content is d. c It is calculated based on the first moisture content and the second moisture content, with an ambient temperature correction factor AT. K The temperature correction value BT0 for mixed air can be preset according to the characteristics of the unit before it leaves the factory.

[0035] Step S103: Based on the target dehumidification capacity and the preset correspondence between the operating frequency of the compressor in the air conditioning unit and the dehumidification capacity, control the compressor to perform dehumidification operation at the operating frequency corresponding to the target dehumidification capacity.

[0036] In this embodiment, a humidity control model is established between the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, the third humidity content of the air supplied by the air conditioning unit, and the target dehumidification capacity of the air conditioning unit. The compressor in the air conditioning unit can be frequency-controlled according to the target dehumidification capacity of the air conditioning unit output by the humidity control model, providing a basis for precise control and predictive adjustment of humidity inside the car, thereby improving the reliability of the dehumidification function of the air conditioning unit.

[0037] Through steps S101 to S103, the first humidity level inside the rail vehicle car, the second humidity level of the fresh air in the air conditioning unit, and the third humidity level of the supplied air in the air conditioning unit are obtained. These three humidity levels are then input into a preset humidity control model to obtain the target dehumidification amount output by the model. Finally, based on the target dehumidification amount and the preset correspondence between the compressor's operating frequency and the dehumidification amount in the air conditioning unit, the compressor is controlled to perform dehumidification at the operating frequency corresponding to the target dehumidification amount. This application solves the problem of low reliability of the dehumidification function in air conditioning units in related technologies, achieving the technical effect of improving the reliability of the dehumidification function of air conditioning units.

[0038] In some embodiments, the first moisture content, the second moisture content, and the third moisture content are input into a preset humidity control model, and the target dehumidification capacity output by the humidity control model is obtained through the following steps:

[0039] Step 1: Calculate the fourth moisture content of the mixed air in the air conditioning unit based on the first and second moisture contents.

[0040] Step 2: Input the third and fourth moisture contents into the humidity control model to obtain the target dehumidification amount output by the humidity control model.

[0041] In this embodiment, the fourth moisture content of the mixed air in the air conditioning unit can be obtained by the following formula:

[0042] d c =[G X d X +(G S -G X )d n ] / G s ;

[0043] Where, d n The first moisture content, d X The second moisture content, G S For air supply mass flow rate, G X For fresh air mass flow rate, supply air mass flow rate (G) S and fresh air quality flow rate G X All of these values ​​can be read by the controller inside the air conditioning unit, and the fourth moisture content of the mixed air in the air conditioning unit can be calculated using the above formula.

[0044] In other embodiments, the humidity control model can also be represented as:

[0045]

[0046] G s *(d c -ds ) = W f *AT K *BT0;

[0047] Among them, K p K i and K d These are the proportionality constant, integral constant, and differential constant, respectively, d T The target humidity level inside the carriage can be preset according to the passenger's comfort expectations. G is the air quality inside the carriage, which is related to the carriage volume and the air density inside the carriage. The air quality G changes in real time, and the main influencing factors include the temperature, humidity and air density inside the carriage.

[0048] In this embodiment, the first moisture content d inside the rail vehicle car can also be obtained. n Target moisture content d T And the air quality G inside the carriage, and according to the preset proportionality constant K p Integral constant K i and differential constant K d This can be achieved through the formula above. G was calculated S *(d c -d s The value of ) is then determined based on G. S *(d c -d s The value of ) is obtained through G in the above formula. S *(d c -d s ) = W f *AT K *BT0, calculates the target dehumidification capacity W f .

[0049] In this embodiment, K p K i and K d Fixed values ​​can be pre-set based on the unit's operating experience, and then modified and adjusted based on actual operating data and feedback data after the model has been applied for a period of time; air mass flow rate G S For fresh air quality flow rate G X and return air mass flow rate G h The sum of G S G X and G h All of these can be read by the controller inside the air conditioning unit.

[0050] In the above embodiments, the air density matching the first temperature and humidity inside the rail vehicle carriage can be obtained by querying a preset first enthalpy-humidity chart and / or first enthalpy-humidity table, thereby obtaining the air mass G inside the carriage. Based on the first humidity content inside the carriage and the preset target humidity content, and according to the enthalpy-humidity chart and / or enthalpy-humidity table stored in the controller, relevant configuration parameters, and humidity control model, the target dehumidification amount W is finally obtained. f .

[0051] In some embodiments, the third and fourth moisture contents are input into the humidity control model, and the target dehumidification output by the humidity control model is obtained through the following steps:

[0052] Step 1: Obtain the current ambient temperature and the current mixed air temperature.

[0053] Step 2: Based on the current ambient temperature and the current mixed air temperature, determine the ambient temperature correction amount corresponding to the current ambient temperature and the mixed air temperature correction amount corresponding to the current mixed air temperature.

[0054] Step 3: Input the ambient temperature correction, mixed air temperature correction, third moisture content, and fourth moisture content into the humidity control model to obtain the target dehumidification output by the humidity control model.

[0055] In this embodiment, a suitable ambient temperature correction amount and a mixed air temperature correction amount can be obtained based on the current ambient temperature and the current mixed air temperature.

[0056] For example: When dehumidifying using a compressor at different operating frequencies under varying ambient and mixed air temperatures, the ambient temperature correction factor AT is determined based on the dehumidification capacity corresponding to each operating frequency at the current ambient and mixed air temperatures. K And the temperature correction for mixed air, BT0.

[0057] In the above embodiments, the ambient temperature correction AT of the compressor under various ambient temperatures and mixed air temperatures can be... K The mixed air temperature correction value BT0 is stored in the controller. Before the compressor performs dehumidification operation at the operating frequency corresponding to the target dehumidification capacity, the controller determines the ambient temperature correction value corresponding to the current ambient temperature and the mixed air temperature correction value corresponding to the current mixed air temperature based on the current ambient temperature and the current mixed air temperature. This ensures that an appropriate ambient temperature correction value AT can be selected under various ambient and mixed air temperatures. K In addition, the mixed air temperature correction factor BT0 improves the reliability of the dehumidification function of the air conditioning unit under different ambient temperatures and mixed air temperatures.

[0058] In some embodiments, obtaining the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the air supplied by the air conditioning unit is achieved through the following steps:

[0059] Step 1: Obtain the first temperature and humidity inside the rail vehicle car and the second temperature and humidity of the fresh air in the air conditioning unit.

[0060] Step 2: Find the first moisture content that matches the first temperature and humidity by querying the preset first enthalpy-humidity diagram and / or the first enthalpy-humidity table, and find the second moisture content that matches the second temperature and humidity by querying the preset second enthalpy-humidity diagram and / or the second enthalpy-humidity table.

[0061] Step 3: Obtain the third humidity content of the air supplied by the air conditioning unit.

[0062] In this embodiment, obtaining the third moisture content of the air supplied in the air conditioning unit may include obtaining the third temperature and humidity of the air supplied in the air conditioning unit and querying the preset third enthalpy-humidity chart and / or third enthalpy-humidity table to obtain the third moisture content that matches the third temperature and humidity; or obtaining the third temperature and machine dew point temperature of the air supplied in the air conditioning unit and determining the third moisture content of the air supplied in the air conditioning unit based on the third temperature and machine dew point temperature.

[0063] In the above embodiments, the first enthalpy-humidity diagram, the first enthalpy-humidity meter, the second enthalpy-humidity diagram, the second enthalpy-humidity meter, the third enthalpy-humidity diagram, and the third enthalpy-humidity meter are all stored in the controller. The other two parameters and the air density at the corresponding temperature can be obtained by querying the enthalpy-humidity diagram or the enthalpy-humidity meter using any two parameters among temperature, humidity, moisture content, and enthalpy value.

[0064] In air conditioning technology, when air passes through a cooler or spray chamber, a portion of it directly contacts the pipe wall or chilled water and becomes saturated, forming dew. However, a significant portion of the air does not directly contact the cold source. Although it also undergoes heat exchange and cools down, its relative humidity remains around 90-95%. This state temperature is called the machine dew point temperature. Therefore, in addition to obtaining the third moisture content using enthalpy-humidity charts or enthalpy-humidity meters, the third moisture content can also be obtained based on the third temperature of the air supplied to the air conditioning unit and the machine dew point temperature. The machine dew point temperature is related to parameters such as the fins and fin spacing of the evaporator in the air conditioning unit.

[0065] In some embodiments, before obtaining the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the air supplied by the air conditioning unit, the method further performs the following steps:

[0066] Step 1: Dehumidify the air using a compressor at different operating frequencies under different ambient temperatures and mixed air temperatures.

[0067] Step 2: Determine the relationship between the compressor's operating frequency and dehumidification capacity at the current ambient temperature and current mixed air temperature, based on the dehumidification capacity corresponding to each operating frequency at the current ambient temperature and current mixed air temperature.

[0068] In this embodiment, the compressor can be pre-operated at different frequencies under different ambient temperatures and mixed air temperatures. Based on the dehumidification capacity corresponding to each operating frequency of the compressor at the current ambient temperature and mixed air temperature, the correspondence between the compressor's operating frequency and dehumidification capacity at the current ambient temperature and mixed air temperature is determined and stored in the controller. This ensures that when facing different ambient temperatures, mixed air temperatures, and target dehumidification capacities, the operating frequency corresponding to each target dehumidification capacity at the current ambient temperature and mixed air temperature can be obtained from the controller, and the compressor can be frequency-controlled. This improves the reliability of the dehumidification function of the air conditioning unit under different ambient temperatures and mixed air temperatures, as well as the environmental adaptability of the air conditioning unit.

[0069] In the above embodiments, since rail vehicles often need to pass through environments with large temperature differences, such as tunnels, variable frequency control dehumidification has a faster adjustment speed than conventional graded dehumidification in related technologies. Therefore, variable frequency control dehumidification is more practical in rail transit and has higher reliability and sensitivity.

[0070] This embodiment provides a dehumidification control device for an air conditioning unit, applied to humidity control inside a rail vehicle carriage. Figure 2 This is a structural block diagram of the dehumidification control device of an air conditioning unit according to an embodiment of this application, such as... Figure 2 As shown, the device includes: an acquisition module 20, used to acquire the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the air supplied by the air conditioning unit; an output module 21, used to input the first humidity content, the second humidity content, and the third humidity content into a preset humidity control model to obtain the target dehumidification amount output by the humidity control model; and a control module 22, used to control the compressor to perform dehumidification operation at the operating frequency corresponding to the target dehumidification amount according to the target dehumidification amount and the preset correspondence between the operating frequency of the compressor in the air conditioning unit and the dehumidification amount.

[0071] In some embodiments, the output module 21 is further configured to calculate a fourth moisture content of the mixed air in the air conditioning unit based on the first moisture content and the second moisture content.

[0072] Input the third and fourth moisture contents into the humidity control model to obtain the target dehumidification amount output by the humidity control model;

[0073] The humidity control model is represented as follows:

[0074]

[0075] G S *(d c -d s ) = W f *AT K *BT0;

[0076] Among them, G S For air supply mass flow rate, d c The fourth moisture content, d s The third moisture content, d n The first moisture content, d T For the target moisture content, K p K is a proportionality constant. i K is the integration constant. d Let W be a differential constant, G be the air mass inside the rail vehicle car, and W be a differential constant. f For the target dehumidification capacity, AT K BT0 is the ambient temperature correction amount, and BT0 is the mixed air temperature correction amount.

[0077] In some embodiments, the output module 21 is further configured to acquire the current ambient temperature and the current mixed air temperature; determine the ambient temperature correction amount corresponding to the current ambient temperature and the mixed air temperature correction amount corresponding to the current mixed air temperature based on the current ambient temperature and the current mixed air temperature; input the ambient temperature correction amount, the mixed air temperature correction amount, the third moisture content and the fourth moisture content into the humidity control model to obtain the target dehumidification amount output by the humidity control model.

[0078] In some embodiments, the acquisition module 20 is further configured to acquire a first temperature and humidity inside the rail vehicle car and a second temperature and humidity of the fresh air in the air conditioning unit; query a preset first enthalpy-humidity chart and / or a first enthalpy-humidity table to obtain a first moisture content matching the first temperature and humidity and query a preset second enthalpy-humidity chart and / or a second enthalpy-humidity table to obtain a second moisture content matching the second temperature and humidity; and acquire a third moisture content of the air supplied by the air conditioning unit.

[0079] In some embodiments, the acquisition module 20 is further configured to acquire the third temperature and humidity of the air supplied in the air conditioning unit, and query a preset third enthalpy-humidity chart and / or third enthalpy-humidity table to obtain a third moisture content that matches the third temperature and humidity; or acquire the third temperature and machine dew point temperature of the air supplied in the air conditioning unit, and determine the third moisture content of the air supplied in the air conditioning unit based on the third temperature and machine dew point temperature.

[0080] In some embodiments, the device further includes a pre-processing module for dehumidifying the compressor at different operating frequencies under different ambient temperatures and different mixed air temperatures; and for determining the correspondence between the operating frequency of the compressor and the dehumidification amount at the current ambient temperature and the current mixed air temperature based on the dehumidification amount corresponding to each operating frequency of the compressor at the current ambient temperature and the current mixed air temperature.

[0081] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0082] This embodiment also provides a dehumidification control system for an air conditioning unit, applied to humidity control in a rail vehicle carriage. The system includes: multiple temperature and humidity sensors, a controller, and a compressor; wherein, the multiple temperature and humidity sensors are installed inside the air conditioning unit and inside the rail vehicle carriage; the compressor is installed inside the air conditioning unit; the controller is communicatively connected to each temperature and humidity sensor and the compressor, and is used to execute the dehumidification control method of the air conditioning unit as described in the above embodiment.

[0083] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0084] This embodiment also provides an electronic device. Figure 3 This is a schematic diagram of the hardware structure of an electronic device according to an embodiment of this application, such as... Figure 3 As shown, the electronic device includes a memory 304 and a processor 302. The memory 304 stores a computer program, and the processor 302 is configured to run the computer program to perform the steps in any of the above method embodiments.

[0085] Specifically, the processor 302 may include a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of this application.

[0086] The memory 304 may include a large-capacity memory for data or instructions. For example, and not limitingly, the memory 304 may include a hard disk drive (HDD), a floppy disk drive, a solid-state drive (SSD), flash memory, an optical disk drive, a magneto-optical disk drive, magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 304 may include removable or non-removable (or fixed) media. Where appropriate, the memory 304 may be internal or external to the dehumidification control unit of an air conditioning unit. In a particular embodiment, the memory 304 is non-volatile memory. In a particular embodiment, the memory 304 includes read-only memory (ROM) and random access memory (RAM). Where appropriate, the ROM may be a mask-programmed ROM, a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), an electrically alterable read-only memory (EAROM), or flash memory, or a combination of two or more of these. Where appropriate, the RAM can be Static Random-Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). DRAM can be Fast Page Mode Dynamic Random Access Memory (FPMDRAM), Extended Data Out Dynamic Random Access Memory (EDODRAM), Synchronous Dynamic Random-Access Memory (SDRAM), etc.

[0087] The memory 304 can be used to store or cache various data files that need to be processed and / or communicated, as well as possible computer program instructions executed by the processor 302.

[0088] The processor 302 reads and executes computer program instructions stored in the memory 304 to implement any of the dehumidification control methods for air conditioning units in the above embodiments.

[0089] Optionally, the electronic device may further include a transmission device 306 and an input / output device 308, wherein the transmission device 306 is connected to the processor 302 and the input / output device 308 is connected to the processor 302.

[0090] Optionally, in this embodiment, the processor 302 can be configured to perform the following steps via a computer program:

[0091] S1, obtain the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the air supplied by the air conditioning unit.

[0092] S2, input the first moisture content, the second moisture content and the third moisture content into the preset humidity control model to obtain the target dehumidification amount output by the humidity control model.

[0093] S3 controls the compressor to perform dehumidification operation at the operating frequency corresponding to the target dehumidification capacity, based on the target dehumidification capacity and the preset correspondence between the compressor's operating frequency and the dehumidification capacity in the air conditioning unit.

[0094] It should be noted that the specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0095] Furthermore, in conjunction with the dehumidification control method for the air conditioning unit in the above embodiments, this application embodiment can provide a storage medium for implementation. This storage medium stores a computer program; when executed by a processor, the computer program implements any of the dehumidification control methods for the air conditioning unit in the above embodiments.

[0096] Those skilled in the art should understand that the technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments have been described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A dehumidification control method for an air conditioning unit, applied to humidity control inside a rail vehicle carriage, characterized in that, The method includes: The first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the air supplied by the air conditioning unit are obtained. The first moisture content, the second moisture content, and the third moisture content are input into a preset humidity control model to obtain the target dehumidification amount output by the humidity control model. Based on the target dehumidification capacity and the preset correspondence between the operating frequency of the compressor in the air conditioning unit and the dehumidification capacity, the compressor is controlled to perform dehumidification operation at the operating frequency corresponding to the target dehumidification capacity; The first moisture content, the second moisture content, and the third moisture content are input into a preset humidity control model to obtain the target dehumidification capacity output by the humidity control model, including: Based on the first moisture content and the second moisture content, the fourth moisture content of the mixed air in the air conditioning unit is calculated; The third moisture content and the fourth moisture content are input into the humidity control model to obtain the target dehumidification amount output by the humidity control model. The humidity control model is represented as follows: ； ； ； in, For air supply quality flow rate, This is the fourth moisture content. The third moisture content, The first moisture content, For target moisture content, It is a proportionality constant. Let be the integration constant. Let be the differential constant. The air quality inside the carriage of the rail vehicle. To achieve the target dehumidification capacity, This is the correction amount for ambient temperature. This is the temperature correction amount for the mixed air. The second moisture content, For fresh air quality flow rate.

2. The dehumidification control method for an air conditioning unit according to claim 1, characterized in that, The third and fourth moisture contents are input into the humidity control model to obtain the target dehumidification capacity output by the humidity control model, including: Obtain the current ambient temperature and the current mixed air temperature; Based on the current ambient temperature and the current mixed air temperature, determine the ambient temperature correction amount corresponding to the current ambient temperature and the mixed air temperature correction amount corresponding to the current mixed air temperature; The ambient temperature correction, the mixed air temperature correction, the third moisture content, and the fourth moisture content are input into the humidity control model to obtain the target dehumidification output by the humidity control model.

3. The dehumidification control method for an air conditioning unit according to claim 1, characterized in that, Obtaining the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the air supplied by the air conditioning unit includes: The first temperature and humidity inside the rail vehicle carriage and the second temperature and humidity of the fresh air in the air conditioning unit are obtained. The first moisture content matching the first temperature and humidity is obtained by querying the preset first enthalpy-humidity chart and / or the first enthalpy-humidity table, and the second moisture content matching the second temperature and humidity is obtained by querying the preset second enthalpy-humidity chart and / or the second enthalpy-humidity table; Obtain the third moisture content of the air supplied by the air conditioning unit.

4. The dehumidification control method for an air conditioning unit according to claim 3, characterized in that, Obtaining the third moisture content of the air supplied by the air conditioning unit includes: Obtain the third temperature and humidity of the air supplied in the air conditioning unit, and look up the third moisture content that matches the third temperature and humidity in the preset third enthalpy-humidity chart and / or third enthalpy-humidity table; Alternatively, the third temperature of the air supplied in the air conditioning unit and the machine dew point temperature can be obtained, and the third moisture content of the air supplied in the air conditioning unit can be determined based on the third temperature and the machine dew point temperature.

5. The dehumidification control method for an air conditioning unit according to claim 1, characterized in that, Before obtaining the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the supplied air in the air conditioning unit, the method further includes: The compressor is used to perform dehumidification operation at different operating frequencies under different ambient temperatures and different mixed air temperatures. Based on the dehumidification capacity corresponding to each operating frequency of the compressor at the current ambient temperature and the current mixed air temperature, determine the correspondence between the operating frequency and dehumidification capacity of the compressor at the current ambient temperature and the current mixed air temperature.

6. A dehumidification control device for an air conditioning unit, used for humidity control in a rail vehicle carriage, characterized in that, The device includes: The acquisition module is used to acquire the first humidity content inside the rail vehicle car, the second humidity content of the fresh air in the air conditioning unit, and the third humidity content of the air supplied by the air conditioning unit. The output module is used to calculate the fourth moisture content of the mixed air in the air conditioning unit based on the first moisture content and the second moisture content; and input the third moisture content and the fourth moisture content into a preset humidity control model to obtain the target dehumidification output by the humidity control model. The control module is used to control the compressor to perform dehumidification operation at the operating frequency corresponding to the target dehumidification amount based on the target dehumidification amount and the preset correspondence between the operating frequency of the compressor in the air conditioning unit and the dehumidification amount. The output module is also configured to calculate a fourth moisture content of the mixed air in the air conditioning unit based on the first moisture content and the second moisture content; The third moisture content and the fourth moisture content are input into the humidity control model to obtain the target dehumidification amount output by the humidity control model. The humidity control model is represented as follows: ； ； ； in, For air supply quality flow rate, This is the fourth moisture content. The third moisture content, The first moisture content, For target moisture content, It is a proportionality constant. Let be the integration constant. Let be the differential constant. The air quality inside the carriage of the rail vehicle. To achieve the target dehumidification capacity, This is the correction amount for ambient temperature. This is the temperature correction amount for the mixed air. The second moisture content, For fresh air quality flow rate.

7. A dehumidification control system for an air conditioning unit, applied to humidity control inside a rail vehicle carriage, characterized in that, The system includes: multiple temperature and humidity sensors, a controller, and a compressor; wherein, Multiple temperature and humidity sensors are installed inside the air conditioning unit and inside the rail vehicle carriage; The compressor is installed inside the air conditioning unit; The controller is communicatively connected to each of the temperature and humidity sensors and the compressor, and is used to execute the dehumidification control method of the air conditioning unit according to any one of claims 1 to 5.

8. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to run the computer program to perform the dehumidification control method for the air conditioning unit according to any one of claims 1 to 5.

9. A storage medium, characterized in that, The storage medium stores a computer program, wherein when the computer program is executed by a processor, it implements the dehumidification control method of the air conditioning unit according to any one of claims 1 to 5.

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