An environmental control method and associated apparatus

Abstract

The application relates to an environment control method and a related device thereof, and a system comprising an air supply device, a control device and an environment adjusting device connected with the control device; the air supply device comprises an air supply main air duct and a first air supply branch, a second air supply branch and a third air supply branch communicated with the air supply main air duct, and air volume control members connected with the control device are arranged on the first air supply branch, the second air supply branch and the third air supply branch respectively; the first air supply branch is arranged at the bottom of a grain pile in a grain depot and is used for air supply to the bottom of the grain pile; the second air supply branch is arranged on the surface of the grain pile and is used for air supply to the surface layer of the grain pile; the third air supply branch is arranged on the inner wall of the grain depot and is used for air supply to the periphery of the grain pile; the environment adjusting device is used for adjusting air flowing through the air supply main air duct; and the control device is used for controlling the opening degrees of the environment adjusting device and the air volume control members based on corresponding grain pile state information of the grain pile. The application improves the grain storage quality and reduces the grain loss rate.

Description

Technical Field

[0001] This application relates to the field of environmental control technology, and in particular to an environmental control method and related equipment. Background Technology

[0002] Grain storage places stringent environmental requirements on grain silos. Due to significant differences in temperature and humidity across different areas within a grain pile, ventilation is necessary to maintain overall temperature and humidity uniformity. However, existing grain silo environmental control systems typically employ single-point ventilation, with air ducts arranged in a single layout within the silo. The regulated air is only output from a fixed location, leading to noticeable temperature and humidity stratification within the grain pile. This negatively impacts the storage quality of the grain and consequently, the grain loss rate. Summary of the Invention

[0003] This application provides an environmental control method and related equipment to solve the problem of temperature and humidity stratification inside grain piles caused by single-point air supply in the prior art.

[0004] In a first aspect, this application provides an environmental control system, including: an air supply device, a control device, and an environmental conditioning device connected to the control device; The air supply device includes a main air supply duct and a first air supply branch, a second air supply branch and a third air supply branch connected to the main air supply duct. Each of the first air supply branch, the second air supply branch and the third air supply branch is provided with an air volume control component connected to the control device. The first air supply branch is located at the bottom of the grain pile in the grain warehouse and is used to supply air to the bottom of the grain pile; The second air supply branch is provided on the surface of the grain pile and is used to supply air to the surface of the grain pile; The third air supply branch is located on the inner wall of the grain silo and is used to supply air to the surrounding area of ​​the grain pile. The environmental control device is used to regulate the air flowing through the main air supply duct; The control device is used to control the opening degree of the environmental adjustment device and each of the air volume control components based on the grain pile status information corresponding to the grain pile, so as to adjust the air flowing to the grain pile and the air volume flowing to the first air supply branch, the second air supply branch and the third air supply branch.

[0005] Secondly, this application provides an environmental control method, characterized in that it is applied to the environmental control system described above, the method comprising: Obtain the status information of the grain piles in the grain warehouse; Based on the grain pile status information, the target operating mode corresponding to the environmental control system is determined; Based on the target operating mode, determine the target air supply strategy corresponding to the target operating mode; Based on the target air supply strategy, the opening degree of the environmental conditioning device and each air volume control component in the environmental control system is controlled to regulate the air flowing to the grain pile and the air volume flowing to the first air supply branch, the second air supply branch and the third air supply branch in the environmental control system.

[0006] Thirdly, this application provides an environmental control device, comprising: The acquisition module is used to acquire the status information of the grain piles in the grain warehouse. The determination module is used to determine the target operating mode of the environmental control system based on the grain pile status information. The determining module is further configured to determine the target air supply strategy corresponding to the target operating mode based on the target operating mode; The control module is used to control the opening degree of the environmental conditioning device and each air volume control component in the environmental control system based on the target air supply strategy, so as to regulate the air flowing to the grain pile and the air volume flowing to the first air supply branch, the second air supply branch and the third air supply branch in the environmental control system.

[0007] Fourthly, this application provides an environmental control system, including a processor and a memory, wherein the processor is configured to execute an environmental control program stored in the memory to implement the environmental control method described above.

[0008] Compared with the prior art, the technical solution provided in this application has the following advantages. The environmental control system provided in this application includes: an air supply device, a control device, and an environmental conditioning device connected to the control device; the air supply device includes a main air supply duct and a first air supply branch, a second air supply branch, and a third air supply branch connected to the main air supply duct. Each of the first, second, and third air supply branches is equipped with an airflow control component connected to the control device; the first air supply branch is located at the bottom of the grain pile in the grain silo and is used to supply air to the bottom of the grain pile; the second air supply branch is located on the surface of the grain pile and is used to supply air to the surface of the grain pile; the third air supply branch is located on the inner wall of the grain silo and is used to supply air to the surrounding area of ​​the grain pile; the environmental conditioning device is used to regulate the air flowing through the main air supply duct; the control device is used to control the opening degree of the environmental conditioning device and each airflow control component based on the grain pile state information corresponding to the grain pile, so as to regulate the airflow to the grain pile and the airflow to the first, second, and third air supply branches. Through the above methods, this application constructs a three-dimensional air supply network consisting of a main air supply duct and three branch air supply lines extending to the bottom of the grain pile, the surface of the grain silo, and the perimeter of the grain silo. Each branch air supply line is equipped with independently adjustable airflow control components. The control device coordinates the opening of each airflow control component and the environmental adjustment device based on the grain pile status information. This achieves differentiated air supply to different areas of the grain pile, avoiding the temperature and humidity stratification problem caused by single-point air supply in existing technologies. It maintains the overall temperature and humidity uniformity of the grain pile, improves grain storage quality, and reduces grain loss rate. Attached Figure Description

[0009] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0010] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0012] Figure 1 A schematic diagram of the structure of an environmental control system provided in an embodiment of this application; Figure 2A flowchart illustrating an environmental control method provided in an embodiment of this application; Figure 3 A flowchart illustrating another environmental control method provided in an embodiment of this application; Figure 4 A schematic diagram of the structure of an environmental control device provided in an embodiment of this application; Figure 5 This is a schematic diagram of another environmental control system provided in an embodiment of this application. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, 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, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0014] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0015] refer to Figure 1 , Figure 1 This is a schematic diagram of an environmental control system provided in an embodiment of this application. The environmental control system provided in this embodiment is an energy-saving environmental control system, which includes: an air supply device, an environmental conditioning device, and a control device 1.

[0016] The air supply system includes a main air supply duct 12, a first air supply branch 13, a second air supply branch 15, and a third air supply branch 14. The main air supply duct 12 is connected to the first air supply branch 13, the second air supply branch 15, and the third air supply branch 14. The air supply system is used to deliver conditioned air to the grain piles in the grain silo to regulate the temperature and humidity inside the grain piles. The main air supply duct 12 refers to the main air channel connected to the environmental control device, which collects and delivers the air treated by the environmental control device, distributing it as a unified air source to the first air supply branch 13, the second air supply branch 15, and the third air supply branch 14. The first air supply branch 13, the second air supply branch 15, and the third air supply branch 14 are three independent air supply paths branching off from the main air supply duct 12. They correspond to different air supply areas within the grain pile, including the bottom of the grain pile (corresponding to the first air supply branch 13), the surface of the grain pile (corresponding to the second air supply branch 15), and the perimeter of the grain pile (corresponding to the third air supply branch 14), achieving six-sided three-dimensional air supply to the grain pile. Each of the first, second, and third air supply branches 13 and 14 is equipped with an airflow control device. This device independently adjusts the airflow rate of its respective branch. By changing the opening of the control device, the airflow entering different branches can be precisely controlled, achieving on-demand distribution rather than uniformly supplying air to all areas. The airflow control device can be an electric damper.

[0017] In the above description, the first air supply branch 13 includes at least one ventilation cage located at the bottom of the grain pile. The ventilation cage is connected to the main air supply duct 12 and has multiple first air outlets facing the grain pile and airflow control components. When air flowing out of the main air supply duct 12 flows into the first air supply branch 13, the regulated air is dispersed into the bottom of the grain pile through the multiple first air outlets facing the grain pile in each ventilation cage, achieving bottom-up permeable air supply and eliminating the accumulation of temperature and humidity at the bottom of the grain pile. Specifically, each ventilation cage is galvanized and perforated, laid parallel to the length of the grain silo. Each first air outlet can be evenly distributed in the ventilation cage. By controlling the opening of the airflow control components in each ventilation cage, the airflow into each ventilation cage can be controlled. It should be noted that the airflow control components are located at the connection between the first air supply branch 13 and the main air supply duct 12; that is, airflow control components are installed at the connection between the main air supply duct 12 and each ventilation cage.

[0018] The second air supply branch 15 includes at least one air supply belt disposed on the surface of the grain pile. The air supply belt is connected to the main air supply duct 12 and is provided with multiple second air outlets facing the grain pile and airflow control components. When air flowing out of the main air supply duct 12 flows into the second air supply branch 15, it is supplied to the upper space of the grain pile through the multiple second air outlets facing the grain pile in each air supply belt. Specifically, the air supply belts are flexible air supply belts, each made of flexible material, such as cloth or plastic film. Each flexible air supply belt is arranged in a serpentine or mesh pattern on the surface of the grain silo, and gentle diffused airflow is achieved through each second air outlet in the flexible air supply belt. By controlling the opening of the airflow control components in each flexible air supply belt, the airflow into each flexible air supply belt can be controlled. It should be noted that the air volume control component is located at the connection between the second air supply branch 15 and the main air supply duct 12. In other words, the air volume control component is installed at the connection between the main air supply duct 12 and each flexible air supply belt.

[0019] The third air supply branch 14 includes at least one inner wall air duct installed on the inner wall of the grain silo. This inner wall air duct is connected to the main air supply duct 12 and has multiple third air outlets facing the grain pile and airflow control components. Specifically, the inner wall air duct refers to a ventilation duct laid along the inner wall of the grain silo, which can be installed at a certain height h above the ground. The third air outlets in each ventilation duct can be evenly distributed. The third air outlets can be adjustable-angle louvered air outlets, with the angle adjustable within a certain range to eliminate overheating around the grain pile. By controlling the opening of the airflow control components in each inner wall air duct, the airflow into each inner wall air duct can be controlled. It should be noted that the airflow control components are located at the connection between the third air supply branch 14 and the main air supply duct 12; that is, airflow control components are installed at the connection between the main air supply duct 12 and each inner wall air duct.

[0020] In this embodiment, the first air supply branch 13 is specifically defined as a ventilation cage buried at the bottom of the grain pile, the second air supply branch 15 is specifically defined as an air supply belt laid on the surface of the grain pile, and the third air supply branch 14 is specifically defined as an inner wall air duct set in the inner wall of the grain silo. This allows the three air supply branches to accurately deliver the regulated air to three different air supply areas: the bottom of the grain pile, the surface of the grain silo, and the surrounding area of ​​the grain silo, respectively, through infiltration, diffusion, and directional air supply. This achieves six-sided three-dimensional air supply coverage of the grain pile, avoiding the drawbacks of traditional single-point air supply which cannot take into account the differentiated needs of different areas of the grain pile, and further ensuring the overall uniformity of temperature and humidity inside the grain pile.

[0021] The environmental control device is used to regulate the air flowing through the main air supply duct 12. The environmental control device mainly includes a set of equipment responsible for regulating the physical state of the air in the grain silo. Specifically, the environmental control device includes a refrigerant circulation loop, a dehumidifier 8, and a regenerator 7.

[0022] The refrigerant circulation circuit includes a compressor 2, a condenser 3, a throttle valve 5 and an evaporator 6 connected in series. The refrigerant circulation circuit is filled with a refrigerant as a heat transfer medium. Through the phase change cycle of the refrigerant in the refrigerant circulation circuit, heat is transferred from the low-temperature end to the high-temperature end, so as to cool the air flowing through the evaporator 6, thereby providing a cold source for the grain pile. The evaporator 6 in the refrigerant circulation circuit is arranged in the main air supply duct 12 and is used to cool the air flowing through the main air supply duct 12.

[0023] The dehumidifier 8 is arranged in the main air supply duct 12 and is located downstream of the evaporator 6 in the air supply direction, and is used to dehumidify the air flowing through the main air supply duct 12. The dehumidifier 8 utilizes the characteristic that the water vapor partial pressure on the surface of a high-concentration salt solution is low, so that the moisture in the air is transferred to the solution, thereby reducing the moisture content of the air and achieving deep dehumidification of the air. The downstream of the air supply can be understood as that in the air flow direction, the air first passes through the evaporator 6 and then through the dehumidifier 8. Letting the air pass through the evaporator 6 first and then through the dehumidifier 8 can make the air reach a near-saturated low-temperature state before entering the dehumidifier 8, which is beneficial to improving the efficiency of subsequent solution dehumidification.

[0024] The regenerator 7 is arranged on the heat dissipation side of the condenser 3 in the refrigerant circulation circuit. The regenerator 7 is connected to the dehumidifier 8 and is used to regenerate the solution generated by the dehumidifier 8 by using the heat dissipated by the condenser 3. The heat dissipation side of the condenser 3 can be understood as the side where the condenser 3 releases heat, that is, the air flow channel area formed by the condensation fan 4 provided with the condenser 3. By arranging the regenerator 7 on the heat dissipation side of the condenser 3, the heat released by the condenser 3 can be reused.

[0025] It should be noted that the environmental control device further includes a solution pump 10 and a solution tank. The solution pump 10 is arranged on the connecting pipeline between the regenerator 7 and the dehumidifier 8 to provide power for the circulation of the solution between the dehumidifier 8 and the regenerator 7. The solution pump 10 transports the dilute solution generated after absorbing moisture in the dehumidifier 8 to the regenerator 7 for concentration, and at the same time returns the concentrated concentrated solution in the regenerator 7 to the dehumidifier 8 to continue absorbing moisture, forming a continuous and stable solution circulation flow. The solution tank is arranged in the granary and is used to store and buffer the solution, providing a solution source for the solution circulation between the dehumidifier 8 and the regenerator 7. The inlet end of the solution tank is connected to the liquid outlet of the regenerator 7 through a pipeline. The concentrated solution that has completed concentration and regeneration in the regenerator 7 flows into the solution tank by gravity or pipeline pressure difference for buffer storage. The outlet end of the solution tank is connected to the liquid inlet of the dehumidifier 8 through a pipeline. The solution pump 10 extracts the concentrated solution from the solution tank, pressurizes and transports it to the dehumidifier 8 for spraying and liquid distribution.

[0026] In this embodiment, by arranging the evaporator 6 and dehumidifier 8 in the refrigerant circulation loop sequentially along the air supply direction of the main air duct 12, a stepped treatment of air is achieved by first cooling and then dehumidifying. At the same time, by setting the regenerator 7 on the heat dissipation side of the condenser 3, a thermal coupling structure is constructed between the condensation side and the dehumidification regeneration side, so as to use the condensation waste heat as the heat source for solution regeneration. No additional electric heating device is required. While achieving integrated cooling and dehumidification functions, it not only reduces costs but also reduces overall operating energy consumption.

[0027] The environmental control device also includes a humidifier 9, which is connected to the main air supply duct 12 via a bypass duct and is used to humidify the air flowing through the main air supply duct 12. When humidification is needed for the grain pile, water mist or water vapor is sprayed into the air flowing through the bypass duct through the humidifier 9, increasing the humidity of the air and forming high-humidity air, which then flows into the main air supply duct 12 and is transported to the grain pile by the main air supply duct 12. The bypass duct can be understood as an auxiliary air channel set in parallel with the main air supply duct 12, with one end connected to the upstream of the main air supply duct 12 and the other end connected to the downstream of the main air supply duct 12. The humidifier 9 is installed in this bypass duct. When humidification is needed, it provides a flow path for the air that bypasses the evaporator 6 and the dehumidifier 8. Since cooling and dehumidification are not required in humidification mode, the air enters the humidifier 9 directly through the bypass vent for humidification, avoiding unnecessary cooling or dehumidification when flowing through the evaporator 6 and dehumidifier 8, reducing airflow resistance, and also reducing unnecessary losses to the refrigerant circulation loop and dehumidifier 8.

[0028] Control device 1 is connected to the environmental conditioning device and each airflow control component. Based on the grain pile's status information, it controls the opening degree of the environmental conditioning device and each airflow control component to adjust the airflow delivered from the main air duct 12 to the first air supply branch 13, the second air supply branch 15, and the third air supply branch 14. In other words, control device 1 receives grain pile status information as a decision-making basis, performs calculations through preset control logic, and ultimately issues corresponding control commands to the environmental conditioning device and each airflow control component, driving them to work in coordination to achieve closed-loop automated regulation.

[0029] Specifically, the control device 1 is also connected to the compressor 2, dehumidifier 8 and humidifier 9 in the refrigerant circulation loop, and is used to control the refrigerant circulation loop, dehumidifier 8 and humidifier 9 based on the grain pile status information, so as to adjust the temperature and humidity of the air flowing through the main air supply duct 12.

[0030] In the above, the grain pile status information includes the first temperature and the first moisture content of multiple grain piles. The environmental control system also includes a temperature detection device 16 and a moisture detection device 17. Both the temperature detection device 16 and the moisture detection device 17 are connected to the control device 1.

[0031] The system includes multiple temperature detection devices 16, each positioned at a different location within the grain pile. Each device acquires a first temperature from the grain pile's status information and transmits this first temperature to the control device 1. Specifically, each temperature detection device 16 corresponds to a specific spatial point within the grain pile. Multiple devices together form an array, enabling comprehensive detection of the three-dimensional temperature within the grain pile. Each temperature detection device 16 can be a temperature sensor. The first temperature is the local temperature at a specific spatial point.

[0032] Multiple moisture detection devices 17 are provided, each positioned at a different location within the grain pile. Each device acquires the first moisture content from the status information and transmits it to the control device 1. Similarly, each device corresponds to a specific point within the grain pile, achieving full coverage detection of the moisture content within the pile. These multiple moisture detection devices 17 can be comprised of an online grain moisture analyzer equipped with multiple probes, which can be distributed across different locations within the grain pile.

[0033] In this embodiment, by arranging multiple temperature detection devices 16 and multiple moisture detection devices 17 at different spatial locations inside the grain pile, the control device 1 can obtain relevant data reflecting the spatial distribution of temperature and humidity inside the grain pile, providing a reliable basis for the differentiated control of air volume in each air supply branch and further ensuring the uniformity of temperature and humidity in the grain pile.

[0034] It should be noted that a variable frequency fan 11 connected to the control device 1 is installed in the main air supply duct 12. When it is necessary to supply air to the grain pile, the variable frequency fan 11 can be controlled by the control device 1 so that the air can be quickly delivered to the grain pile under the drive of the variable frequency fan 11.

[0035] This embodiment provides an environmental control system that constructs a three-dimensional air supply network consisting of a main air supply duct and three branch air supply lines extending to the bottom of the grain pile, the surface of the grain silo, and the perimeter of the grain silo. Each branch air supply line is equipped with independently adjustable airflow control components. The control device coordinates the opening of each airflow control component and the environmental adjustment device based on the grain pile status information. This achieves differentiated air supply to different areas of the grain pile, avoiding the temperature and humidity stratification problem caused by single-point air supply in existing technologies. It maintains the overall temperature and humidity uniformity of the grain pile, improves grain storage quality, and reduces grain loss.

[0036] refer to Figure 2 , Figure 2 This is a flowchart illustrating an environmental control method provided in an embodiment of this application. The environmental control method provided in this application includes the following steps: S201: Obtain the status information of the grain pile corresponding to the grain pile in the grain warehouse.

[0037] In this embodiment, the method is applied to the aforementioned environmental control system. The grain pile state information is collected by temperature detection devices and moisture detection devices in the environmental control system. The grain pile state information includes a first temperature of the grain pile collected by multiple temperature detection devices and a first moisture content of the grain pile collected by multiple moisture detection devices.

[0038] S202: Determine the target operating mode of the environmental control system based on the grain pile status information.

[0039] In this embodiment, the target operating mode can be understood as the control device matching the current grain pile state information from a variety of preset operating modes based on the grain pile state information. By determining the target operating mode, the operating mode of the environmental control system is determined, i.e., whether the current environmental control system should focus on cooling, dehumidification, or humidification. When the moisture content of the grain pile is high, the target operating mode is the low-temperature drying mode; when the moisture content of the grain pile is normal but the temperature of the grain pile is high, the target operating mode is the low-temperature preservation mode; when the moisture content of the grain pile is low, the target operating mode is the conditioning and humidification mode.

[0040] Specifically, after acquiring the grain status information, the control device analyzes and processes the collected grain pile status information, such as calculating the average temperature and average moisture content of the grain pile, and comparing them with preset temperature thresholds and preset moisture content thresholds, thereby determining the current storage status of the grain pile and selecting the matching target working mode from a variety of preset working modes.

[0041] In one implementation, step S202 above, which determines the target operating mode of the environmental control system based on the grain pile status information, includes: Based on the first temperatures of multiple grain piles, determine the first actual temperature corresponding to the grain pile. Based on the first moisture content of multiple grain piles, determine the first actual moisture content corresponding to the grain pile; Based on the first actual temperature and / or the first actual moisture content, determine the target operating mode of the environmental control system.

[0042] Here, the first actual temperature can be understood as the temperature value used to characterize the overall temperature of the grain pile, calculated by a preset algorithm based on the first temperature at multiple spatial locations within the grain pile. Similarly, the first actual moisture content can be understood as the moisture content value used to characterize the overall moisture content of the grain pile, calculated by a preset algorithm based on the first moisture content at multiple spatial locations within the grain pile.

[0043] Specifically, the control device receives first temperatures transmitted from multiple temperature detection devices distributed at different spatial locations in the grain pile. It then uses a preset algorithm to comprehensively process these first temperatures to obtain a first actual temperature representing the overall temperature condition of the grain pile. For example, the preset algorithm could be an arithmetic mean of all the first temperatures, or it could assign different weights to different spatial locations and then calculate a weighted average of all the first temperatures.

[0044] Similarly, the control device receives the first moisture content transmitted by multiple moisture detection devices distributed at different locations in the grain pile, and performs comprehensive processing on the multiple first moisture contents based on the same preset algorithm as the first actual temperature to obtain the first actual moisture content that represents the overall moisture status of the grain pile.

[0045] The control device compares the calculated first actual temperature with a preset temperature threshold, and simultaneously compares the first actual moisture content with a preset moisture content threshold. Based on different combinations of comparison results, the target operating mode corresponding to the environmental control system is determined. The control device stores a mapping relationship that corresponds to different comparison results and preset operating modes, allowing the target operating mode to be retrieved from this mapping relationship based on each comparison result.

[0046] In this embodiment, the first temperature and first moisture content distributed in multiple spatial locations inside the grain pile are integrated into a first actual temperature and a first actual moisture content that represent the overall state of the grain pile. The target working mode is then determined based on the first actual temperature and the first actual moisture content. This avoids misjudgment that may be caused by using single-point data to represent the overall state of the grain warehouse, and provides a more reliable decision-making basis for the subsequent air supply strategy, further improving the accuracy of temperature and humidity control of the grain pile.

[0047] In another embodiment, the step S202 above, which determines the target operating mode of the environmental control system based on the grain pile status information, includes: Obtain the set of historical grain pile status information up to the current moment; Based on the grain pile status information and the historical grain pile status information set, determine the predicted grain pile status information corresponding to the grain pile; Based on the predicted state information of the grain pile, the target operating mode corresponding to the grain storage environmental control system is determined.

[0048] The historical grain pile state information set can be understood as a time-series data set of grain pile state information continuously collected and stored over a period of time prior to the current moment. This historical grain pile state information set includes the first temperature and the first moisture content at multiple historical time points.

[0049] Predicting grain pile status information can be understood as the control device calculating the estimated temperature and humidity status of the grain pile at a certain target time in the future, based on the current grain pile status information and the historical grain pile status information set, through a preset prediction algorithm or model.

[0050] Specifically, the control device retrieves historical data on the state of the grain pile within a preset time period prior to the current moment, including the first temperature and first moisture content at multiple historical time points, to obtain a set of historical grain pile state information.

[0051] The control device inputs the current grain pile status information and the historical grain pile status information into a preset prediction model. Based on the temperature and humidity variation patterns and rates over time in the historical grain pile status information, and using the current grain pile status information as a starting point, the prediction model calculates the predicted temperature and moisture content that the grain pile may reach at a target future time (e.g., 30 minutes or 1 hour later).

[0052] Based on the predicted temperature and moisture content in the predicted grain pile status information, the control device uses the same threshold comparison logic as above to make a judgment, thereby determining the target operating mode that the environmental control system should enter at the moment.

[0053] By introducing historical grain pile status information and combining it with current grain pile status information to generate predicted grain pile status information, and by determining the target working mode in advance based on the predicted grain pile status information, the environmental control system is transformed from a passive response to an active prediction and control system, thus overcoming the problem of grain pile control lag.

[0054] In the above, determining the first actual temperature corresponding to a grain pile based on the first temperatures of multiple grain piles includes: Based on the first position of each temperature detection device in the environmental control system, determine the first preset weight of each temperature detection device. Using the first preset weight of each second temperature threshold, the first temperature of each grain pile is weighted and averaged to determine the first actual temperature of the grain pile.

[0055] Based on the first moisture content of multiple grain piles, determine the first actual moisture content corresponding to the grain pile, including: Based on the second position corresponding to each moisture detection device in the environmental control system, the second preset weight corresponding to each moisture detection device is determined. Using the second preset weights of each second temperature threshold, the first moisture content of each grain pile is weighted and averaged to determine the first actual moisture content of the grain pile.

[0056] The first position can be understood as the installation location of the temperature detection device inside the grain pile, and similarly, the second position can be understood as the installation location of the moisture detection device (i.e., the probe) inside the grain pile.

[0057] The first preset weight is a weighting coefficient pre-set based on the first position of the temperature detection device to calculate the first actual temperature corresponding to the first temperature. The second preset weight is a weighting coefficient pre-set based on the second position of the moisture detection device to calculate the first actual moisture content corresponding to the first moisture content.

[0058] Specifically, to determine the first actual temperature, the control device first reads the first position of each temperature detection device, and based on each first position, retrieves a preset weight mapping relationship to determine the first preset weight corresponding to each temperature detection device. Subsequently, the control device multiplies the first temperature collected by each temperature detection device by its corresponding first preset weight, sums all the products, and divides by the sum of the weights to obtain the weighted average value, which is the first actual temperature.

[0059] To determine the first actual moisture content, the control device processes the data in parallel using the same logic as the first actual temperature. First, it reads the second position of each moisture detection device, determines the corresponding second preset weight, then multiplies each first moisture content by its corresponding second preset weight, sums the results, and divides by the sum of the weights. The resulting weighted average is the first actual moisture content.

[0060] In this embodiment, by assigning different preset weights to each temperature and moisture detection device based on their installation locations, and by using a weighted average method to calculate the first actual temperature and the first actual moisture content, the comprehensive index used for determining the target working mode more accurately reflects the true temperature and humidity of the grain pile as a whole, providing a more reliable basis for the correct selection of the target working mode.

[0061] Furthermore, the above-mentioned determination of the target operating mode of the environmental control system based on the first actual temperature and / or the first actual moisture content includes: When the first actual moisture content is greater than the first moisture content threshold, the target operating mode of the environmental control system is determined to be the first operating mode. When the first actual temperature is greater than the first temperature threshold and the first actual moisture content is between the second moisture content threshold and the first moisture content threshold, the target operating mode of the environmental control system is determined to be the second operating mode. When the first actual moisture content is less than the second moisture content threshold, the target operating mode of the environmental control system is determined to be the third operating mode.

[0062] The first moisture content threshold represents the upper limit of the moisture content for safe storage of the grain pile. The second moisture content threshold represents the lower limit of the moisture content for safe storage of the grain pile, and the second moisture content threshold is lower than the first moisture content threshold. It should be noted that when obtaining the first and second moisture content thresholds, images of the grain pile can be acquired using an image acquisition device in the environmental control system. Image recognition can then be performed on the acquired grain pile images to identify the corresponding grain variety. Based on the correspondence between the grain variety and each moisture content threshold, the corresponding first and second moisture content thresholds can be retrieved, thereby improving the accuracy of subsequent target working mode determination.

[0063] The first temperature threshold represents the upper limit of the temperature for safe storage of grain piles. Similarly, based on the correspondence between grain varieties and various temperature thresholds, the preset temperature threshold corresponding to that grain variety can be retrieved, thereby improving the accuracy of subsequent target working mode determination.

[0064] The first working mode is the low-temperature drying mode mentioned above, which indicates that the moisture content of the grain pile exceeds the standard and there is a risk of mold growth; the second working mode is the low-temperature preservation mode mentioned above, which indicates that the grain pile faces the risk of aging and insect infestation; the third working mode is the conditioning and humidification mode mentioned above, which indicates that the grain pile is too dry and there is a risk of cracking and breakage.

[0065] Specifically, the control device compares the first actual moisture content with the first moisture content threshold. If the first actual moisture content is greater than the first moisture content threshold, the risk of mold growth caused by excessive moisture in the grain pile is the most pressing storage safety threat and must be addressed first. Regardless of the current first actual temperature, the environmental control system enters the first operating mode.

[0066] Secondly, if the first actual moisture content is not greater than the first moisture content threshold, the control device continues to determine the combination of the first actual temperature and the first actual moisture content. When the first actual temperature is greater than the first temperature threshold and the first actual moisture content is between the second moisture content threshold and the first moisture content threshold, the actual moisture content of the grain pile is within a safe range, but the temperature of the grain pile is too high, and cooling is the primary objective. The environmental control system then enters the second operating mode.

[0067] Finally, if the judgment conditions for the second working mode are not met, the control device compares the first actual moisture content with the second moisture content threshold. If the first actual moisture content is less than the second moisture content threshold, the grain pile is too dry and needs to be humidified and conditioned. Since the moisture content is already below the lower threshold, temperature is no longer the primary concern, and the environmental control system enters the third working mode.

[0068] Through the above methods, this embodiment introduces three threshold parameters—a first moisture content threshold, a second moisture content threshold, and a first temperature threshold—to construct an automatic switching logic for three working modes based on the first actual moisture content and the first actual temperature as dual criteria. This enables the environmental control system to accurately select the working mode according to the real-time condition of the grain pile, thereby achieving intelligent and precise coupled control of temperature and humidity in the grain warehouse.

[0069] S203: Determine the target air supply strategy corresponding to the target operating mode based on the target operating mode.

[0070] In this embodiment, the target air supply strategy is used to indicate the operating mode of the environmental conditioning device and each air volume control component.

[0071] Specifically, after obtaining the target working mode, the target air supply strategy corresponding to the target working mode can be obtained from the first association relationship based on the target working mode. The first association relationship stores multiple sets of correspondences between preset working modes and preset air supply strategies.

[0072] In the above, the target air supply strategy corresponding to the first working mode is the first air supply strategy, the target air supply strategy corresponding to the second working mode is the second air supply strategy, and the target air supply strategy corresponding to the third working mode is the third air supply strategy. The first air supply strategy includes controlling the refrigerant circulation loop and dehumidifier operation in the environmental conditioning unit, and controlling the opening degree of each air volume control component in the environmental control system to full opening. The second air supply strategy includes controlling the operation of the refrigerant circulation loop and determining the second actual temperature of the air supply area corresponding to the first air supply branch, the second air supply branch and the third air supply branch in the grain pile based on the first temperature of multiple grain piles, so as to control the opening of each air volume control component using each second actual temperature. The third air supply strategy includes controlling the operation of the humidifier in the environmental conditioning device, and controlling the opening degree of the air volume control element in the first air supply branch and / or the second air supply branch to alternate between fully open and fully closed according to the preset air supply cycle.

[0073] The preset air supply cycle can be understood as a complete time loop of alternating delivery and pause of humidified air under the third air supply strategy, including air supply periods and intermittent air stop periods. By setting the preset air supply cycle, the total amount and rhythm of humidified air delivered to the grain pile are controlled, avoiding the uneven phenomenon of rapid water absorption on the grain surface without sufficient absorption inside due to continuous humidification. This allows sufficient time for moisture to penetrate from the surface of the grain pile to the interior and diffuse and balance within the grain pile.

[0074] When the target air supply strategy is the first air supply strategy, the control device simultaneously starts the compressor, dehumidifier, solution pump, and variable frequency fan in the refrigerant circulation loop. The evaporator cools the air, and the dehumidifier dehumidifies the air, producing low-temperature dry air. At the same time, the control device issues a full-open command to all airflow control components on the first, second, and third air supply branches. The low-temperature dry air evenly covers the bottom, surface, and surrounding areas of the grain pile at maximum airflow, comprehensively cooling and dehumidifying the grain pile.

[0075] When the target air supply strategy is the second air supply strategy, the control device starts the compressor and variable frequency fan in the refrigerant circulation loop, the solution pump stops or runs at low speed (only maintaining solution circulation to prevent crystallization), the evaporator cools the air to produce cold air, and the dehumidifier and humidifier are turned off. Simultaneously, the control device calculates the second actual temperature of each air supply area based on the temperature detection devices located in the air supply areas corresponding to the three air supply branches. The calculation method for this second actual temperature is similar to that of the first actual temperature described above, and can be referred to the above description; it will not be repeated here in this embodiment. After obtaining each second actual temperature, the opening degree of the airflow control component in the air supply branch corresponding to each air supply area is controlled based on each second actual temperature. The three airflow control components operate independently and are not coupled. It should be noted that the air supply areas corresponding to the first, second, and third air supply branches can be divided according to actual needs; this will not be repeated here in this embodiment.

[0076] When the target air supply strategy is the third air supply strategy, the control device shuts off the compressor and starts the humidifier and variable frequency fan to produce high-humidity air. Simultaneously, the control device intermittently opens the airflow control devices on the first and / or second air supply branches to full opening according to a preset air supply cycle. During the air supply period, high-humidity air enters the first and / or second air supply branches through the main air supply duct, gently delivering high-humidity air from the bottom and surface of the grain pile. After the air supply period ends, the airflow control devices close, and the environmental control system enters an intermittent air-stop period, allowing moisture to naturally diffuse and balance within the grain pile. This preset air supply cycle repeats continuously. It should be noted that under the third air supply strategy, the airflow control devices on the third air supply branch are not activated to avoid the risk of condensation and mold growth that may be caused by high-humidity air directly blowing onto the inner wall of the grain silo, and to prevent excessive humidification around the grain pile, further ensuring the uniformity of conditioning and humidification and the safety of stored grain.

[0077] In this embodiment, when the grain moisture content is high, the refrigerant circulation loop and dehumidifier are activated to cool and dehumidify the air. Simultaneously, the airflow control components of each air supply branch are fully opened to deliver low-temperature, dry air to the grain pile at maximum airflow across the entire area, achieving a rapid response to high moisture content conditions and effectively suppressing the risk of mold growth. When the grain temperature is high but the moisture content is normal, only cooling is activated, and the opening of the corresponding air valves is independently adjusted according to the measured temperature of each air supply area. More air is supplied to high-temperature areas, and less or no air is supplied to low-temperature areas, achieving differentiated and precise temperature control for different zones, balancing cooling effect with energy saving. When the grain moisture content is low, the humidifier is activated to produce high-humidity air, and the airflow control components of the first and / or second air supply branches are controlled to alternate between fully open and fully closed according to a preset air supply cycle, intermittently replenishing moisture to the grain pile. This allows sufficient time for moisture to naturally diffuse and penetrate within the grain pile, avoiding localized over-humidification caused by continuous humidification and achieving uniform conditioning.

[0078] The above-mentioned use of the second actual temperature to control the opening degree of each air volume control component includes: Perform the following steps for each air supply zone: Determine the target difference between the second actual temperature and the second temperature threshold corresponding to the air supply area; When the target difference is greater than the first preset threshold, the opening degree of the air volume control component on the air supply branch corresponding to the air supply area is controlled to be fully open; When the target difference is less than or equal to the second preset threshold, the opening degree of the air volume control component on the air supply branch corresponding to the air supply area is controlled to be fully closed. When the target difference is greater than the second preset threshold and less than or equal to the first preset threshold, the target opening degree corresponding to the target difference is determined based on the target difference, and the opening degree of the air volume control component on the air supply branch corresponding to the air supply area is controlled to the target opening degree.

[0079] The second temperature threshold represents the baseline storage temperature of the grain silo. The first preset threshold represents the upper limit of the temperature difference, and the second preset threshold represents the lower limit of the temperature difference. The first preset threshold is greater than the second preset threshold.

[0080] Specifically, for each air supply zone, the control device calculates the target difference between the corresponding second actual temperature and the second temperature threshold. The control device compares the target difference with a first preset threshold. If the target difference is greater than the first preset threshold, it indicates that the temperature of the air supply zone deviates significantly from the reference storage temperature, and there are significant local hot spots. At this time, the control device directly sets the opening of the airflow control component corresponding to the air supply zone to full open, using maximum airflow to centrally cool the air supply zone.

[0081] If the target difference does not exceed the first preset threshold, the control device continues to compare the target difference with the second preset threshold. If the target difference is less than or equal to the second preset threshold, it indicates that the temperature of the air supply area has approached or reached the reference storage temperature. At this time, the control device sets the opening of the airflow control component corresponding to the air supply area to fully close, stopping the air supply to the air supply area.

[0082] If the target difference is between the first preset threshold and the second preset threshold, it indicates that the temperature in the air supply area is moderately high, requiring cooling but not in the most urgent situation. At this time, the control device calculates the target opening degree based on the magnitude of the target difference according to a preset correlation (e.g., a positive correlation linear function) and adjusts the airflow control component to that target opening degree. The larger the target difference, the closer the target opening degree is to fully open; the smaller the target difference, the closer the target opening degree is to fully closed.

[0083] In this embodiment, the difference between the second actual temperature and the second temperature threshold corresponding to each air supply area is divided into three difference intervals, which correspond to three air volume control methods. This allows the air volume of each air supply area to change continuously and smoothly with the magnitude of the temperature deviation. While eliminating local hot spots, it avoids ineffective air supply to the air supply areas that have already met the standards, thereby improving the temperature and humidity control effect of the grain pile.

[0084] S204: Based on the target air supply strategy, the opening degree of the environmental conditioning device and each air volume control component in the environmental control system is controlled to regulate the air flowing to the grain pile and the air volume flowing to the first air supply branch, the second air supply branch and the third air supply branch in the environmental control system.

[0085] In this embodiment, after obtaining the target air supply strategy, the control device generates corresponding control commands based on the target air supply strategy and sends the control commands to various functional components in the environmental control system. The corresponding functional components (such as compressors, solution pumps, humidifiers, and dehumidifiers) are then started or stopped. Simultaneously, the opening degree of each airflow control component is adjusted to a specified value, and the speed of the variable frequency fan is adjusted. Finally, the regulated air is distributed through the main air supply duct to the first, second, and third air supply branches according to the target air supply strategy, forming a three-dimensional differentiated air supply to the grain pile.

[0086] It should be noted that after determining the target air supply strategy, the target power consumption required to execute the target air supply strategy is determined. If the target power consumption is less than a preset power consumption threshold, step S204 is executed. If the target power consumption is greater than or equal to the preset power consumption threshold, the off-peak electricity period is determined, and step S204 is executed during the off-peak electricity period. The target power consumption required to execute the target air supply strategy can be obtained based on the pre-stored correspondence between preset operating modes and preset power consumption. Through this method, energy consumption is saved.

[0087] This embodiment provides an environmental control method that constructs a three-dimensional air supply network consisting of a main air supply duct and three branch air supply lines extending to the bottom of the grain pile, the surface of the grain silo, and the perimeter of the grain silo. Each branch air supply line is equipped with independently adjustable airflow control components. The control device determines the target operating mode of the environmental control system based on the grain pile status information, and then determines the corresponding target air supply strategy based on the target operating mode. This allows for coordinated control of the opening degree of each airflow control component and the environmental adjustment device based on the target air supply strategy. This achieves differentiated air supply to different areas of the grain pile, avoiding the temperature and humidity stratification problem caused by single-point air supply in existing technologies. It maintains the overall temperature and humidity uniformity of the grain pile, improves grain storage quality, and reduces grain loss.

[0088] refer to Figure 3 Here is a detailed description of the entire environmental control process: The control device acquires the first actual temperature T and the first actual moisture content M inside the grain pile in real time, and automatically switches the operating mode according to preset thresholds (first temperature threshold T1, second moisture content threshold Mlow, and second moisture content threshold Mhigh). Its control logic is as follows: Mode 1: Low temperature drying mode (when M>Mhigh). At this time, the moisture content of the grain is too high, and there is a risk of mold growth. Cooling and dehumidification operations are required.

[0089] Step 1.1: The control module starts the compressor, dehumidifier, inverter fan and solution pump. Step 1.2: The refrigerant circulation loop operates, and the evaporator cools the air; meanwhile, the condenser dissipates heat, and the condenser fan sends the waste hot air into the regenerator to heat the weak solution returned from the dehumidifier, evaporating the water in it, and the solution flows back to the solution tank after concentration.

[0090] Step 1.3: The cooled air enters the dehumidifier and contacts the strong solution. The moisture in the air is absorbed by the solution, and the moisture content of the air decreases, forming low-temperature dry air.

[0091] Step 1.4: The control device opens the electric air valves in the ventilation floor grille and the inner wall air duct, sends the low-temperature dry air into the grain pile, and forcibly takes away the moisture in the grain pile to perform the operations of cooling and dehumidifying.

[0092] Step 1.5: The environmental control system continues to operate, detects the value of M once every period of time (detection period) t1, and when M drops to ≤Mhigh, it automatically switches to Mode 2.

[0093] Mode 2: Low-temperature fresh-keeping mode (when T>T1 and Mlow≤M≤Mhigh), indicating that the temperature of the grain pile is on the high side but the moisture is within the safe range, and cooling storage is required.

[0094] Step 2.1: The control device starts the compressor and the variable-frequency fan, and the solution pump stops or runs at a low speed (only to maintain the solution circulation to prevent crystallization).

[0095] Step 2.2: The refrigerant circulation loop operates to cool the air. The dehumidifier does not work or only assists in dehumidifying to maintain the relative humidity in the granary within the target range of 50%.

[0096] Step 2.3: The control device intelligently adjusts the opening degree of the electric air valves in each air supply branch according to the feedback of each temperature detection device array, and preferentially supplies air to the air supply areas with higher temperatures to achieve balanced cooling.

[0097] Step 2.4: The environmental control system continues to operate, continuously monitors T every t2, and when T drops to ≤T1, the control device reduces the frequency of the compressor to maintain operation, or starts and stops intermittently to keep the granary at a low temperature and stable operation with a relative humidity suitable for grain storage.

[0098] Mode 3: Conditioning and humidifying mode (when M<Mlow), indicating that the grain is too dry and there is a risk of increased breakage, and humidifying and conditioning are required.

[0099] Step 3.1: The control device closes the variable-frequency compressor, starts the variable-frequency air supply fan, and turns on the humidifier and the solution pump (for circulating the solution, but not heated by the regenerator).

[0100] Step 3.2: The refrigerant circulation loop is not working, the air does not pass through the evaporator for cooling, but flows directly through the humidifier. The high-pressure micro-mist nozzle atomizes the water into particles, and the air absorbs the moisture and becomes high-humidity air.

[0101] Step 3.3: The control device opens the electric air valve in the grain surface air supply belt and / or the ventilation cage to slowly and evenly deliver high-humidity air into the grain pile, allowing the grain moisture content to gradually rise back to the target range. Intermittent air supply is used to allow the moisture to naturally diffuse and balance within the grain pile, preventing localized excessive moisture.

[0102] Step 3.4: The environmental control system continues to run, and the M value is detected every detection cycle t3. When M rises to ≥Mlow, humidification is stopped, the humidifier is turned off, and the system switches to standby mode 2.

[0103] refer to Figure 4 , Figure 4 This is a schematic diagram of an environmental control device provided in an embodiment of this application. The environmental control device provided in this embodiment includes an acquisition module 10, a determination module 20, and a control module 30. The acquisition module 10 is used to acquire grain pile status information corresponding to a grain pile in a grain warehouse. The determination module 20 is used to determine a target operating mode corresponding to the environmental control system based on the grain pile status information. The determination module 20 is also used to determine a target air supply strategy corresponding to the target operating mode based on the target operating mode. The control module 30 is used to control the opening degree of the environmental adjustment device and various airflow control components in the environmental control system based on the target air supply strategy, so as to adjust the airflow to the grain pile and the airflow to the first, second, and third air supply branches in the environmental control system.

[0104] In this embodiment, the grain pile state information includes a first temperature of multiple grain piles and a first moisture content of multiple grain piles; the determining module 20 is further configured to: Based on the first temperatures of the multiple grain piles, determine the first actual temperature corresponding to the grain pile; Based on the first moisture content of the multiple grain piles, determine the first actual moisture content corresponding to the grain pile; Based on the first actual temperature and / or the first actual moisture content, the target operating mode corresponding to the environmental control system is determined.

[0105] In this embodiment, the determining module 20 is further configured to: When the first actual moisture content is greater than the first moisture content threshold, the target working mode corresponding to the environmental control system is determined to be the first working mode; Wherein, the target air supply strategy corresponding to the first working mode is the first air supply strategy, which includes controlling the operation of the refrigerant circulation loop and dehumidifier in the environmental conditioning device, and controlling the opening degree of each of the air volume control components in the environmental control system to be fully open. In this embodiment, the determining module 20 is further used for: The step of determining the target operating mode of the environmental control system based on the first actual temperature and / or the first actual moisture content includes: When the first actual temperature is greater than the first temperature threshold and the first actual moisture content is between the second moisture content threshold and the first moisture content threshold, the target working mode corresponding to the environmental control system is determined to be the second working mode. Wherein, the second moisture content threshold is less than the first moisture content threshold, the target air supply strategy corresponding to the second working mode is the second air supply strategy, the second air supply strategy includes controlling the operation of the refrigerant circulation loop, and determining the second actual temperature of the air supply area corresponding to the first air supply branch, the second air supply branch and the third air supply branch in the grain pile based on the first temperature of the multiple grain piles, so as to use the second actual temperature to control the opening degree of each of the air volume control components.

[0106] In this embodiment, the control module 30 is further configured to: For each of the aforementioned air supply zones, the following steps are performed: Determine the target difference between the second actual temperature and the second temperature threshold corresponding to the air supply area, where the second temperature threshold represents the reference storage temperature of the grain silo; When the target difference is greater than the first preset threshold, the opening degree of the air volume control component on the air supply branch corresponding to the air supply area is controlled to be fully open; When the target difference is less than or equal to the second preset threshold, the opening degree of the air volume control component on the air supply branch corresponding to the air supply area is controlled to be fully closed, and the first preset threshold is greater than the second preset threshold. When the target difference is greater than the second preset threshold and less than or equal to the first preset threshold, the target opening degree corresponding to the target difference is determined based on the target difference, and the opening degree of the air volume control component on the air supply branch corresponding to the air supply area is controlled to the target opening degree.

[0107] In this embodiment, the determining module 20 is further configured to: When the first actual moisture content is less than the second moisture content threshold, the target working mode of the environmental control system is determined to be the third working mode. Wherein, the second moisture content threshold is less than the first moisture content threshold, and the target air supply strategy corresponding to the third working mode is the third air supply strategy. The third air supply strategy includes controlling the humidifier in the environmental conditioning device to work, and controlling the opening degree of the air volume control element in the first air supply branch and / or the second air supply branch to alternate between fully open and fully closed according to the preset air supply cycle.

[0108] In this embodiment, the determining module 20 is further configured to: Based on the first position corresponding to each temperature detection device in the environmental control system, a first preset weight corresponding to each temperature detection device is determined. Using the first preset weights, the first temperature of each grain pile is weighted and averaged to determine the first actual temperature of the grain pile. Determining the first actual moisture content corresponding to each grain pile based on the first moisture content of multiple grain piles includes: Based on the second position corresponding to each moisture detection device in the environmental control system, a second preset weight corresponding to each moisture detection device is determined. Using the second preset weights, the first moisture content of each grain pile is weighted and averaged to determine the first actual moisture content corresponding to the grain pile.

[0109] This embodiment provides an environmental control device that constructs a three-dimensional air supply network consisting of a main air supply duct and three branch air supply lines extending to the bottom of the grain pile, the surface of the grain silo, and the perimeter of the grain silo. Each branch air supply line is equipped with independently adjustable airflow control components. The control device determines the target operating mode of the environmental control system based on the grain pile status information, and then determines the corresponding target air supply strategy based on the target operating mode. Based on the target air supply strategy, the device coordinates the opening of each airflow control component and the environmental adjustment device, achieving differentiated air supply to different areas of the grain pile. This avoids the problem of temperature and humidity stratification within the grain pile caused by single-point air supply in existing technologies, maintains the overall temperature and humidity uniformity of the grain pile, improves grain storage quality, and reduces grain loss rate.

[0110] Figure 5 This is a schematic diagram of the structure of an environmental control system provided in an embodiment of this application. Figure 5The environmental control system 500 shown includes: at least one processor 501, a memory 502, at least one network interface 504, and other user interfaces 503. The various components in the environmental control system 500 are coupled together via a bus system 505. It is understood that the bus system 505 is used to implement communication between these components. In addition to a data bus, the bus system 505 also includes a power bus, a control bus, and a status signal bus. However, for clarity, ... Figure 5 The general designated all buses as Bus System 505.

[0111] The user interface 503 may include a display, keyboard, or clicking device (e.g., mouse, trackball, touchpad, or touchscreen).

[0112] It is understood that the memory 502 in the embodiments of the present invention can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 502 described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0113] In some implementations, memory 502 stores elements, executable units or data structures, or subsets thereof, or extended sets thereof: operating system 5021 and application program 5022.

[0114] The operating system 5021 includes various system programs, such as the framework layer, core library layer, and driver layer, used to implement various basic business functions and handle hardware-based tasks. The application program 5022 includes various applications, such as a media player and a browser, used to implement various application functions. The program implementing the method of this embodiment can be included in the application program 5022.

[0115] In this embodiment of the invention, the processor 501 executes the method steps provided in each method embodiment by calling the program or instructions stored in the memory 502, specifically the program or instructions stored in the application program 5022.

[0116] The methods disclosed in the above embodiments of the present invention can be applied to or implemented by processor 501. Processor 501 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the integrated logic circuit of the hardware in processor 501 or by instructions in the form of software. The processor 501 may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of the present invention can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software units in the decoding processor. The software units may be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The storage medium is located in memory 502. Processor 501 reads the information in memory 502 and, in conjunction with its hardware, completes the steps of the above method.

[0117] It is understood that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described herein, or combinations thereof.

[0118] For software implementation, the techniques described herein can be implemented by units that perform the functions described herein. The software code can be stored in memory and executed by a processor. The memory can be implemented in the processor or external to the processor.

[0119] The environmental control system provided in this embodiment can be as follows: Figure 5 The environmental control system shown can perform, for example... Figure 2 and Figure 3 All steps of the environmental control method, thereby achieving Figure 2 and Figure 3 For details on the technical effects of the environmental control method shown, please refer to [link / reference needed]. Figure 2 and Figure 3 The relevant descriptions are presented concisely and will not be elaborated upon here.

[0120] This invention also provides a storage medium (computer-readable storage medium). This storage medium stores one or more programs. The storage medium may include volatile memory, such as random access memory; it may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid-state drive; and it may also include combinations of the above types of memory.

[0121] When one or more programs in the storage medium can be executed by one or more processors to implement the environmental control method described above that is executed on the environmental control device side.

[0122] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0123] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented in hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0124] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An environmental control system, characterized in that, Includes: an air supply device, a control device, and an environmental control device connected to the control device; The air supply device includes a main air supply duct and a first air supply branch, a second air supply branch and a third air supply branch connected to the main air supply duct. Each of the first air supply branch, the second air supply branch and the third air supply branch is provided with an air volume control component connected to the control device. The first air supply branch is located at the bottom of the grain pile in the grain warehouse and is used to supply air to the bottom of the grain pile; The second air supply branch is provided on the surface of the grain pile and is used to supply air to the surface of the grain pile; The third air supply branch is located on the inner wall of the grain silo and is used to supply air to the surrounding area of ​​the grain pile. The environmental control device is used to regulate the air flowing through the main air supply duct; The control device is used to control the opening degree of the environmental adjustment device and each of the air volume control components based on the grain pile status information corresponding to the grain pile, so as to adjust the air flowing to the grain pile and the air volume flowing to the first air supply branch, the second air supply branch and the third air supply branch.

2. The system according to claim 1, characterized in that, The first air supply branch includes at least one ventilation cage, which is connected to the main air supply duct and is provided with a plurality of first air outlets facing the grain pile and the air volume control device. The second air supply branch includes at least one air supply belt, which is connected to the main air supply duct and is provided with a plurality of second air supply outlets facing the grain pile and the air volume control device. The third air supply branch includes at least one inner wall air duct, which is connected to the main air supply duct and is provided with multiple third air outlets facing the grain pile and the air volume control component.

3. The system according to claim 1, characterized in that, The environmental control device includes a refrigerant circulation loop, a dehumidifier, and a regenerator, and both the refrigerant circulation loop and the dehumidifier are connected to the control device. The evaporator in the refrigerant circulation loop is located in the main air supply duct and is used to cool the air flowing through the main air supply duct. The dehumidifier is installed in the main air supply duct and located downstream of the evaporator, and is used to dehumidify the air flowing through the main air supply duct. The regenerator is located on the heat dissipation side of the condenser in the refrigerant circulation loop. The regenerator is connected to the dehumidifier and is used to regenerate the solution produced by the dehumidifier using the heat dissipated by the condenser. The control device is also used to control the refrigerant circulation loop and the dehumidifier based on the grain pile status information, so as to regulate the air flowing to the grain pile.

4. The system according to claim 3, characterized in that, The environmental control device also includes a humidifier connected to the control device; The humidifier is connected to the main air supply duct through a bypass ventilation duct and is used to humidify the air flowing through the main air supply duct. The control device is also used to control the humidifier based on the grain pile status information to regulate the air flowing towards the grain pile.

5. The system according to claim 1, characterized in that, The grain pile status information includes a first temperature of multiple grain piles and a first moisture content of multiple grain piles; The system also includes: a temperature detection device and a moisture detection device connected to the control device; The temperature detection device is multiple, and each temperature detection device is set in a different spatial position inside the grain pile. Each temperature detection device is used to obtain the first temperature in the grain pile status information and transmit the first temperature to the control device. There are multiple moisture detection devices, each of which is located in a different spatial position inside the grain pile. Each moisture detection device is used to obtain the first moisture content in the state information of the grain pile and transmit the first moisture content to the control device.

6. An environmental control method, characterized in that, The method, applied to the environmental control system as described in any one of claims 1 to 5, comprises: Obtain the status information of the grain piles in the grain warehouse; Based on the grain pile status information, the target operating mode corresponding to the environmental control system is determined; Based on the target operating mode, determine the target air supply strategy corresponding to the target operating mode; Based on the target air supply strategy, the opening degree of the environmental conditioning device and each air volume control component in the environmental control system is controlled to regulate the air flowing to the grain pile and the air volume flowing to the first air supply branch, the second air supply branch and the third air supply branch in the environmental control system.

7. The method according to claim 6, characterized in that, The grain pile status information includes a first temperature of multiple grain piles and a first moisture content of multiple grain piles; The step of determining the target operating mode of the environmental control system based on the grain pile status information includes: Based on the first temperatures of the multiple grain piles, determine the first actual temperature corresponding to the grain pile; Based on the first moisture content of the multiple grain piles, determine the first actual moisture content corresponding to the grain pile; Based on the first actual temperature and / or the first actual moisture content, the target operating mode corresponding to the environmental control system is determined.

8. The method according to claim 7, characterized in that, The step of determining the target operating mode of the environmental control system based on the first actual temperature and / or the first actual moisture content includes: When the first actual moisture content is greater than the first moisture content threshold, the target working mode corresponding to the environmental control system is determined to be the first working mode; The target air supply strategy corresponding to the first working mode is the first air supply strategy, which includes controlling the operation of the refrigerant circulation loop and dehumidifier in the environmental conditioning device, and controlling the opening degree of each of the air volume control components in the environmental control system to be fully open.

9. The method according to claim 8, characterized in that, The step of determining the target operating mode of the environmental control system based on the first actual temperature and / or the first actual moisture content includes: When the first actual temperature is greater than the first temperature threshold and the first actual moisture content is between the second moisture content threshold and the first moisture content threshold, the target working mode corresponding to the environmental control system is determined to be the second working mode. Wherein, the second moisture content threshold is less than the first moisture content threshold, the target air supply strategy corresponding to the second working mode is the second air supply strategy, the second air supply strategy includes controlling the operation of the refrigerant circulation loop, and determining the second actual temperature of the air supply area corresponding to the first air supply branch, the second air supply branch and the third air supply branch in the grain pile based on the first temperature of the multiple grain piles, so as to use the second actual temperature to control the opening degree of each of the air volume control components.

10. The method according to claim 9, characterized in that, The method of controlling the opening degree of each of the air volume control components using each of the second actual temperatures includes: For each of the aforementioned air supply zones, the following steps are performed: Determine the target difference between the second actual temperature and the second temperature threshold corresponding to the air supply area, where the second temperature threshold represents the reference storage temperature of the grain silo; When the target difference is greater than the first preset threshold, the opening degree of the air volume control component on the air supply branch corresponding to the air supply area is controlled to be fully open; When the target difference is less than or equal to the second preset threshold, the opening degree of the air volume control component on the air supply branch corresponding to the air supply area is controlled to be fully closed, and the first preset threshold is greater than the second preset threshold. When the target difference is greater than the second preset threshold and less than or equal to the first preset threshold, the target opening degree corresponding to the target difference is determined based on the target difference, and the opening degree of the air volume control component on the air supply branch corresponding to the air supply area is controlled to the target opening degree.

11. The method according to claim 8, characterized in that, The step of determining the target operating mode of the environmental control system based on the first actual temperature and / or the first actual moisture content includes: When the first actual moisture content is less than the second moisture content threshold, the target working mode of the environmental control system is determined to be the third working mode. Wherein, the second moisture content threshold is less than the first moisture content threshold, and the target air supply strategy corresponding to the third working mode is the third air supply strategy. The third air supply strategy includes controlling the humidifier in the environmental conditioning device to work, and controlling the opening degree of the air volume control element in the first air supply branch and / or the second air supply branch to alternate between fully open and fully closed according to the preset air supply cycle.

12. The method according to claim 7, characterized in that, Determining the first actual temperature corresponding to each grain pile based on the first temperatures of the multiple grain piles includes: Based on the first position corresponding to each temperature detection device in the environmental control system, a first preset weight corresponding to each temperature detection device is determined. Using the first preset weights, the first temperature of each grain pile is weighted and averaged to determine the first actual temperature of the grain pile. Determining the first actual moisture content corresponding to each grain pile based on the first moisture content of multiple grain piles includes: Based on the second position corresponding to each moisture detection device in the environmental control system, a second preset weight corresponding to each moisture detection device is determined. Using the second preset weights, the first moisture content of each grain pile is weighted and averaged to determine the first actual moisture content corresponding to the grain pile.

13. An environmental control device, characterized in that, include: The acquisition module is used to acquire the status information of the grain piles in the grain warehouse. The determination module is used to determine the target operating mode of the environmental control system based on the grain pile status information. The determining module is further configured to determine the target air supply strategy corresponding to the target operating mode based on the target operating mode; The control module is used to control the opening degree of the environmental conditioning device and each air volume control component in the environmental control system based on the target air supply strategy, so as to regulate the air flowing to the grain pile and the air volume flowing to the first air supply branch, the second air supply branch and the third air supply branch in the environmental control system.

14. An environmental control system, characterized in that, include: A processor and a memory, the processor being configured to execute an environmental control program stored in the memory to implement the environmental control method according to any one of claims 6 to 12.

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