Refrigerated transport temperature and humidity control method, device, and storage medium

Abstract

The application discloses a refrigerated transportation temperature and humidity control method and device and a storage medium, relates to the technical field of transportation, and comprises the following steps: obtaining carriage environment data by monitoring the carriage in real time through a temperature sensor and a humidity sensor; obtaining an analysis result by adjusting and analyzing the carriage environment data through a feedback controller; and controlling the temperature and humidity of the carriage through a hydraulic controller based on the analysis result to obtain a control result. Thus, the problem that the refrigerated vehicle cannot be adjusted according to actual temperature and humidity changes during transportation, resulting in poor preservation effect, is solved, and the accuracy of refrigerated transportation temperature and humidity control is improved.

Description

Technical Field

[0001] This application relates to the field of transportation technology, and in particular to a method, apparatus and storage medium for controlling temperature and humidity in refrigerated transportation. Background Technology

[0002] The current market technology for temperature and humidity control in refrigerated trucks mainly relies on efficient compressor refrigeration systems and intelligent temperature and humidity monitoring systems. The refrigeration system of a refrigerated truck typically includes a compressor, condenser, and evaporator. It maintains a low-temperature environment inside the truck through the principle of cyclic refrigeration. The temperature control system uses electronic temperature control technology, which monitors the temperature in real time through sensors and automatically adjusts the compressor operation to ensure a stable temperature inside the truck. Humidity control is achieved by using humidifiers and dehumidifiers to maintain a suitable humidity level and prevent goods from being damaged due to excessive dryness or dampness.

[0003] However, in the pipeline design of refrigerated trucks, ensuring the stability of temperature and humidity control is crucial, especially when environmental conditions change (such as extremely low temperatures or high temperatures), as traditional motor drive mechanisms may fail at low temperatures.

[0004] The above content is only used to help understand the technical solution of this application and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main objective of this application is to provide a method, device, and storage medium for controlling temperature and humidity during refrigerated transportation, aiming to solve the technical problem that refrigerated trucks cannot adjust according to actual temperature and humidity changes during transportation, resulting in poor preservation effects.

[0006] To achieve the above objectives, this application proposes a method for controlling temperature and humidity during refrigerated transport. The method is applied to a temperature and humidity control system, which includes a feedback controller, a hydraulic controller, and a transport vehicle. The method includes:

[0007] The environmental data of the transport compartment is obtained by real-time monitoring using temperature and humidity sensors.

[0008] Based on the cabin environment data, the feedback controller is used for adjustment and analysis to obtain the analysis results.

[0009] Based on the analysis results, the temperature and humidity of the transport compartment are controlled by the hydraulic controller to obtain the control results.

[0010] In one embodiment, before the step of obtaining the environmental data of the transport compartment through real-time monitoring using temperature and humidity sensors, the method further includes:

[0011] Analyze the shipping order to obtain the transported goods and their preservation requirements;

[0012] The layout of the carriage is determined based on the transported goods and preservation requirements, and the layout result is obtained.

[0013] The layout result is sent to the cargo transportation terminal, which then moves the transported goods to the transport compartment for storage based on the layout result.

[0014] In one embodiment, the step of arranging the carriage layout according to the transported goods and preservation requirements to obtain the layout result includes:

[0015] The dimensions and piping of the transport vehicle are obtained by reading its design parameters.

[0016] The cargo is sorted according to the carriage pipes and preservation requirements to obtain the sorting result;

[0017] Based on the sorting results and the dimensions of the carriages, the transported goods are laid out in the carriages to obtain the layout results.

[0018] In one embodiment, before the step of adjusting and analyzing the feedback controller based on the carriage environment data to obtain the analysis result, the method further includes:

[0019] The relative humidity of the transport compartment is measured.

[0020] Based on the preset decoupling coefficient, the output value of the feedback controller is decoupled and analyzed by testing the temperature and the relative humidity to obtain the output value of the temperature controller and the output value of the humidity controller.

[0021] The decoupling coefficient, the output value of the temperature controller, and the output value of the humidity controller are optimized using a genetic algorithm to obtain optimized parameters.

[0022] The feedback controller is optimized using the optimization parameters to obtain the controller optimization result.

[0023] In one embodiment, the step of adjusting and analyzing the feedback controller based on the carriage environment data to obtain the analysis results includes:

[0024] The actual values ​​of the compartment temperature and humidity are obtained by analyzing the compartment environmental data.

[0025] The control deviation value is obtained by calculating the difference between the actual values ​​of the temperature and humidity in the carriage and the layout results.

[0026] Based on the control deviation value, the feedback controller is used for adjustment and analysis to obtain the analysis results.

[0027] In one embodiment, the step of calculating the control deviation value based on the difference between the actual value of the compartment temperature, the actual value of the compartment humidity, and the layout result includes:

[0028] The analysis of the layout results yielded values ​​for moderate temperature and moderate humidity.

[0029] The temperature control deviation value is obtained by calculating the difference between the optimal temperature value and the actual temperature value of the carriage.

[0030] The humidity control deviation value is obtained by calculating the difference between the moderate humidity value and the actual humidity value of the carriage.

[0031] The layout results, temperature control deviation, and humidity control deviation values ​​are summarized and analyzed to obtain the control deviation values.

[0032] In one embodiment, the control results include temperature control results and humidity control results. The step of controlling the temperature and humidity of the transport compartment through the hydraulic controller based on the analysis results to obtain the control results includes:

[0033] Based on the analysis results, the temperature and humidity control values ​​for the passenger compartment are determined.

[0034] Based on the temperature adjustment value of the carriage, the opening size of the louvers is adjusted by the hydraulic controller to obtain the temperature control result;

[0035] Based on the humidity adjustment value of the carriage, the dehumidifier and humidifier are adjusted by the hydraulic controller to obtain the humidity control result.

[0036] In one embodiment, after the step of adjusting the dehumidifier and humidifier via the hydraulic controller according to the humidity adjustment value of the passenger compartment to obtain the humidity control result, the method further includes:

[0037] Moisture content is detected in the dehumidifier;

[0038] When the dehumidifier detects that the adsorbed moisture exceeds the storage threshold, the water is extracted by a water pump and stored in a water tank.

[0039] When the hydraulic controller adjusts the humidifier, water from the water reservoir is transported to the humidifier.

[0040] Furthermore, to achieve the above objectives, this application also proposes a refrigerated transport temperature and humidity control device. The device is applied to a temperature and humidity control system, which includes a feedback controller, a hydraulic controller, and a transport compartment, comprising:

[0041] The monitoring module is used to monitor the transport compartment in real time using temperature and humidity sensors to obtain compartment environmental data.

[0042] The analysis module is used to perform adjustment and analysis based on the carriage environment data through the feedback controller to obtain analysis results;

[0043] The control module is used to control the temperature and humidity of the transport compartment through the hydraulic controller based on the analysis results, and obtain the control results.

[0044] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the refrigerated transport temperature and humidity control method described above.

[0045] One or more technical solutions proposed in this application have at least the following technical effects:

[0046] This application proposes a method, device, and storage medium for controlling temperature and humidity in refrigerated transport. The method involves real-time monitoring of the transport compartment using temperature and humidity sensors to obtain environmental data. Based on this data, a feedback controller performs adjustments and analysis to obtain results. Finally, a hydraulic controller controls the temperature and humidity of the transport compartment to achieve the desired control result. This approach solves the problem of poor preservation caused by the inability to adjust to actual temperature and humidity changes during refrigerated transport, thus improving the accuracy of temperature and humidity control in refrigerated transport. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0048] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1This is a flowchart illustrating an embodiment of the refrigerated transport temperature and humidity control method of this application.

[0050] Figure 2 This is a schematic diagram of the PID control structure for temperature and humidity control in a refrigerated truck, which is part of the refrigerated transport temperature and humidity control method of this application.

[0051] Figure 3 This is a schematic diagram illustrating the genetic algorithm used to optimize PID parameters in the refrigerated transport temperature and humidity control method of this application.

[0052] Figure 4 This is a schematic diagram of the final PID control structure involved in the refrigerated transport temperature and humidity control method of this application;

[0053] Figure 5 This is a flowchart illustrating Embodiment 2 of the refrigerated transport temperature and humidity control method of this application.

[0054] Figure 6 This is a schematic diagram of the overall temperature and humidity control system involved in the refrigerated transportation temperature and humidity control method of this application;

[0055] Figure 7 This is a schematic diagram illustrating the operation of the fan motor involved in the refrigerated transport temperature and humidity control method of this application.

[0056] Figure 8 This is a schematic diagram showing the distribution of components in the temperature and humidity control system of the refrigerated transport temperature and humidity control method of this application within the transport compartment;

[0057] Figure 9 This is a schematic diagram illustrating the method for controlling temperature and humidity during refrigerated transport in this application, which involves adjusting louvers using hydraulic oil.

[0058] Figure 10 This is another schematic diagram of the refrigerated transport temperature and humidity control method of this application, which involves adjusting the louvers with hydraulic oil;

[0059] Figure 11 This is a schematic diagram showing the distribution of the oil inlet pipe and oil return pipe involved in the refrigerated transportation temperature and humidity control method of this application;

[0060] Figure 12 This is a schematic diagram of the humidifier and dehumidifier involved in the refrigerated transport temperature and humidity control method of this application;

[0061] Figure 13 This is a schematic diagram of the module structure of the refrigerated transport temperature and humidity control device according to an embodiment of this application;

[0062] Figure 14 This is a schematic diagram of the equipment structure of the hardware operating environment involved in the refrigerated transportation temperature and humidity control method in the embodiments of this application.

[0063] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0064] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0065] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0066] The main solution of this application embodiment is as follows: Parse the transportation order to obtain the transported goods and preservation requirements; perform a carriage layout based on the transported goods and preservation requirements to obtain a layout result; send the layout result to the cargo transportation end, where the cargo transportation end moves the transported goods into the transport carriage for storage according to the layout result. Read the design parameters of the transport carriage to obtain the carriage dimensions and carriage piping; sort the goods positions according to the carriage piping and preservation requirements to obtain a sorting result; perform a carriage layout based on the sorting result and carriage dimensions to obtain a layout result. Measure the relative humidity of the transport carriage to obtain the relative humidity; perform decoupling analysis on the output value of the feedback controller by testing the temperature and the relative humidity according to a preset decoupling coefficient to obtain the output value of the temperature controller and the output value of the humidity controller; perform optimization calculation on the decoupling coefficient, the output value of the temperature controller, and the output value of the humidity controller using a genetic algorithm to obtain optimization parameters; optimize the feedback controller using the optimization parameters to obtain the controller optimization result. The actual values ​​of the carriage temperature and humidity are obtained by analyzing the carriage environment data. A control deviation value is calculated by comparing the actual temperature and humidity values ​​with the layout results. Based on the control deviation value, the feedback controller is used for adjustment and analysis to obtain the analysis results. The layout results are analyzed to obtain suitable temperature and humidity values. A temperature control deviation value is calculated by comparing the suitable temperature value with the actual carriage temperature value. A humidity control deviation value is calculated by comparing the suitable humidity value with the actual carriage humidity value. The layout results, temperature control deviation, and humidity control deviation values ​​are summarized and analyzed to obtain the control deviation value. Based on the analysis results, the carriage temperature adjustment value and carriage humidity adjustment value are determined. The opening size of the louvers is adjusted using the hydraulic controller according to the carriage temperature adjustment value to obtain the temperature control result. The dehumidifier and humidifier are adjusted using the hydraulic controller according to the carriage humidity adjustment value to obtain the humidity control result. The dehumidifier is subjected to moisture detection; when the moisture adsorbed by the dehumidifier exceeds the storage threshold, water is extracted by a water pump and stored in a water tank; when the hydraulic controller adjusts the humidifier, the water in the water tank is transported to the humidifier. This solves the problem of poor preservation effect caused by the inability of refrigerated trucks to adjust according to actual temperature and humidity changes during transportation, achieving control of temperature and humidity in refrigerated transportation and improving the accuracy of temperature and humidity control in refrigerated transportation.Based on the present invention, addressing the problem that traditional motor drive mechanisms may fail at low temperatures and result in poor preservation when environmental conditions change (such as extremely low temperatures or high temperatures), a method for controlling temperature and humidity in refrigerated transportation was designed. The effectiveness of the method was verified when controlling the temperature and humidity in refrigerated transportation, and the accuracy of temperature and humidity control in refrigerated transportation was significantly improved by the method of the present invention.

[0067] In this embodiment, for ease of description, the following description will focus on the refrigerated transport temperature and humidity control device.

[0068] Because current refrigerated truck temperature and humidity control technology mainly relies on efficient compressor refrigeration systems and intelligent temperature and humidity monitoring systems, the refrigeration system of a refrigerated truck typically includes a compressor, condenser, and evaporator. It maintains a low-temperature environment inside the truck through the principle of cyclic refrigeration. The temperature control system uses electronic temperature control technology, which monitors the temperature in real time through sensors and automatically adjusts the compressor operation to ensure a stable temperature inside the truck. Humidity control is achieved by using humidifiers and dehumidifiers to maintain a suitable humidity level and prevent goods from being damaged due to excessive dryness or dampness. However, the traditional motor drive mechanism may fail at low temperatures, thereby reducing the preservation effect of the transport truck.

[0069] This application provides a solution in a temperature and humidity control system that uses humidity and temperature sensors to monitor the environment of the transport compartment and obtain the data. Simultaneously, a feedback controller is used for adjustment and analysis to obtain the results. Finally, a hydraulic controller is used to control the temperature and humidity of the transport compartment, thus achieving temperature and humidity control for refrigerated transport and providing users with better service.

[0070] As can be seen from the above embodiments, this application uses temperature and humidity sensors to monitor the transport compartment in real time to obtain compartment environmental data; based on the compartment environmental data, the feedback controller performs adjustment and analysis to obtain analysis results; based on the analysis results, the hydraulic controller controls the temperature and humidity of the transport compartment to obtain control results. Therefore, during refrigerated truck transportation, the temperature and humidity of the transport compartment are monitored in real time by temperature and humidity sensors of the temperature and humidity control system to obtain compartment environmental data. Subsequently, the compartment environmental data is adjusted and analyzed by the feedback controller to obtain analysis results. Finally, based on the analysis results, the temperature and humidity of the transport compartment are controlled by the hydraulic controller to obtain control results. This solves the problem of poor preservation effect caused by the inability of refrigerated trucks to adjust according to actual temperature and humidity changes during transportation, and improves the accuracy of temperature and humidity control in refrigerated transportation.

[0071] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device or refrigerated transport temperature and humidity control device capable of the above functions. The following description uses a refrigerated transport temperature and humidity control device as an example to illustrate this embodiment and the subsequent embodiments.

[0072] Based on this, the embodiments of this application provide a method for controlling temperature and humidity during refrigerated transportation, referring to... Figure 1 , Figure 1 This is a flowchart illustrating the first embodiment of the refrigerated transport temperature and humidity control method of this application.

[0073] In this embodiment, the refrigerated transport temperature and humidity control method is applied to a temperature and humidity control system, which includes a feedback controller, a hydraulic controller, and a transport vehicle. The method includes steps S04 to S10:

[0074] Step S04: The environmental data of the transport compartment is obtained by real-time monitoring of the transport compartment using temperature and humidity sensors.

[0075] It should be clear that the solution in this embodiment addresses the preservation effect of refrigerated transport vehicles. Current refrigerated truck temperature and humidity control technologies primarily rely on efficient compressor refrigeration systems and intelligent temperature and humidity monitoring systems. A refrigeration system typically includes a compressor, condenser, and evaporator, maintaining a low-temperature environment inside the truck compartment through a circulating refrigeration principle. The temperature control system employs electronic temperature control technology, using sensors to monitor the temperature in real time and automatically adjusting the compressor's operation to ensure a stable temperature inside the compartment. Humidity control utilizes humidifiers and dehumidifiers to maintain a suitable humidity level, preventing damage to goods due to excessive dryness or dampness.

[0076] However, in the pipeline design of refrigerated trucks, ensuring the stability of temperature and humidity control is crucial, especially when environmental conditions change (such as extremely low temperatures or high temperatures), as traditional motor drive mechanisms may fail at low temperatures.

[0077] Therefore, the solution in this embodiment is applied to a temperature and humidity control system, which includes a feedback controller, a hydraulic controller, and a transport vehicle. The feedback controller is a key component of the automatic control system. It is used to adjust the system input by measuring the system output and comparing it with the desired target value (setpoint), thereby achieving stable and accurate control of the system. It is widely used in various engineering and industrial systems, such as temperature control, speed regulation, and motor control. The hydraulic controller is a device used to control the fluid pressure, flow rate, and direction in a hydraulic system. It achieves precise control of the mechanical system by adjusting the working state of hydraulic components (such as pumps, valves, actuators, etc.). The hydraulic controller is widely used in engineering machinery, automated production lines, aerospace, metallurgy, and many other fields. The transport vehicle is a special vehicle used to transport goods that need to be stored in a low-temperature environment (such as food, medicine, chemicals, etc.). It ensures that the goods maintain a constant low temperature during transportation through a built-in refrigeration system to avoid quality degradation or spoilage due to temperature fluctuations.

[0078] In this embodiment, temperature and humidity sensors are first used to monitor the transport compartment in real time to obtain the current environmental data inside the compartment. It should be clear that the environmental data here includes temperature and humidity information of various locations inside the compartment. In actual use, due to the different types of goods transported by the vehicle, such as vegetables and fruits, the required refrigeration effect is different. At this time, different areas need to be stored. Therefore, it is necessary to monitor the temperature and humidity of different locations to prevent the transported goods in various locations of the vehicle from rotting.

[0079] Step S09: Based on the carriage environment data, adjust and analyze the data through the feedback controller to obtain the analysis results;

[0080] After obtaining the environmental data of the transport compartment, it is unknown whether the current storage environment can guarantee the preservation effect of the transported goods. Therefore, the obtained data can be adjusted and analyzed by the feedback controller to obtain the analysis result of whether adjustment is necessary. In this embodiment, the adjustment analysis is based on the transported goods in the transport compartment, the placement of the transported goods, and the preservation requirements of the transported goods.

[0081] Step S10: Based on the analysis results, the temperature and humidity of the transport compartment are controlled by the hydraulic controller to obtain the control results.

[0082] The analysis results in this embodiment include specific adjustment strategies. During transportation, changes in environmental data may occur, such as an increase in temperature, which leads to an increase in temperature but a decrease in humidity. In order to ensure the preservation effect of transported goods, this embodiment uses a hydraulic controller to control the temperature and humidity of the transport compartment, and obtains the control results of temperature and humidity.

[0083] This embodiment, through the above-described scheme, uses sensors to acquire specific environmental data within the transport compartment when changes occur. A feedback controller then analyzes whether adjustments are necessary. Finally, if adjustments are required, a hydraulic controller controls the temperature and humidity of the transport compartment, yielding the desired control result. This solves the problem of being unable to adjust based on actual environmental changes when transporting goods requiring preservation, thus improving the effectiveness of temperature and humidity control in refrigerated transport.

[0084] Specifically, prior to step S04 above, which involves obtaining real-time environmental data of the transport vehicle through temperature and humidity sensors, the method further includes:

[0085] Step S01: Parse the shipping order to obtain the transported goods and preservation requirements;

[0086] Step S02: Arrange the carriage layout according to the transported goods and preservation requirements to obtain the layout result;

[0087] Step S03: The layout result is sent to the cargo transportation terminal, which then moves the transported items to the transport vehicle for storage based on the layout result.

[0088] The way fruits and vegetables are arranged during transportation significantly affects the fluid distribution within the container. Therefore, when fruits and vegetables are first placed into the refrigerated container, the transporter can select the appropriate arrangement mode based on the arrangement. In addition, different fruits and vegetables have different optimal refrigeration temperatures and humidity levels, so the type of fruits and vegetables to be transported must be entered before transportation.

[0089] In the refrigerated transport system of this embodiment, the arrangement of fruits and vegetables and the optimal refrigeration conditions for different types of fruits and vegetables play an important role in temperature and humidity control. In order to ensure precise control of temperature and humidity during transportation, when fruits and vegetables enter the refrigerated container, the system automatically selects the appropriate refrigeration mode according to the input type of fruits and vegetables and the arrangement. At this time, the hydraulic transmission system starts to work, and the pressure regulator precisely controls the flow of cold air and temperature. When there is no current input, the pressure regulator slowly falls to the lowest point under the combined action of its own gravity and spring force, and closes the oil return hole, which marks the beginning of the standby and pressure accumulation stage of the system. At this time, the transportation of goods to the transport compartment is completed.

[0090] More specifically, step S02 above, the step of arranging the carriage layout according to the transported goods and preservation requirements to obtain the layout result, includes:

[0091] Step S021: Read the design parameters of the transport car to obtain the car dimensions and the car piping;

[0092] Step S022: Sort the cargo positions according to the carriage pipes and preservation requirements to obtain the sorting result;

[0093] Step S023: Based on the sorting results and the dimensions of the carriage, the carriage layout of the transported goods is performed to obtain the layout result.

[0094] The system also has strong adaptability and flexibility. After confirming receipt of the customer's transportation order, in addition to the transported items and preservation requirements obtained in the above embodiments, this embodiment also reads the design parameters corresponding to the transport compartment selected by the customer to obtain the size of the compartment and the distribution of the compartment's pipes.

[0095] Then, based on the different types of fruits and vegetables and their optimal refrigeration requirements, the appropriate refrigeration mode can be selected according to the type of fruits and vegetables. The system will automatically adjust the temperature, humidity control and cold air flow output. For example, some fruits and vegetables, such as grapes and apples, require lower temperatures and higher humidity, while others, such as bananas, require slightly higher temperatures and lower humidity. By inputting the type of fruits and vegetables, the system will automatically optimize the settings so that each type of fruit and vegetable can be stored under the best conditions.

[0096] In this embodiment, the cargo positions can be sorted according to the carriage pipes and preservation requirements to determine which items are closer to the pipes and which are farther away. Finally, the carriage layout is carried out according to the sorting results and carriage dimensions to obtain the layout results of the transported items in the carriage.

[0097] It should be clear that the way fruits and vegetables are placed in the refrigerator directly affects the efficiency and uniformity of cold air flow. Since fruits and vegetables of different shapes and sizes occupy different spaces, their placement will create different resistances to air flow, thus affecting the distribution of cold air in the refrigerator. To optimize this process, appropriate placement patterns can be selected according to the size and shape of the fruits and vegetables. Each placement pattern has been optimized to ensure that cold air can be evenly distributed to every part, reducing local overcooling or overheating.

[0098] Further, before step S09 above, which involves adjusting and analyzing the passenger compartment environment data using the feedback controller to obtain the analysis results, the method further includes:

[0099] Step S05: Measure the relative humidity of the transport compartment.

[0100] Step S06: Based on the preset decoupling coefficient, the output value of the feedback controller is decoupled and analyzed by testing the temperature and the relative humidity to obtain the output value of the temperature controller and the output value of the humidity controller.

[0101] Step S07: Optimize the decoupling coefficient, temperature controller output value, and humidity controller output value using a genetic algorithm to obtain optimized parameters.

[0102] Step S08: Optimize the feedback controller using the optimization parameters to obtain the controller optimization result.

[0103] In this embodiment, in addition to using ice boxes as energy storage for the refrigerated transport container, precise control of temperature and humidity is also crucial, especially in ensuring the safety and quality of fruits and vegetables during transportation. Temperature and humidity control are key factors in fruit and vegetable storage. However, traditional temperature and humidity monitoring and control methods (such as PID control) have certain limitations when facing complex processes such as nonlinearity, time-varying, coupling, and parameter and structural uncertainties. Therefore, in order to improve the storage efficiency of fruits and vegetables and ensure their freshness during transportation, this embodiment proposes an improved genetic algorithm PID control method.

[0104] Inside the refrigerated transport container, temperature and humidity sensors monitor the environmental data in real time and feed this data back to the control system. Through an improved genetic algorithm PID control method, the system can dynamically adjust the usage status of the ice box (on or off) and adjust the equipped humidifier or dehumidifier to ensure that the temperature and humidity inside the container are always maintained within the optimal range. In this way, the storage conditions of fruits and vegetables are more precisely controlled, extending the freshness and shelf life of the goods.

[0105] e(t) = Y d (t)-Y(t)

[0106]

[0107] PID controllers are widely used in process control. In the field of automation, approximately 95% of closed-loop operations employ PID controllers. The deviation e(t) is formed by the difference between the given Yd(t) and the actual Y(t). The control quantity is calculated through proportional, integral, and derivative operations to control the output to a specified level. The specific formula is as follows:

[0108] Where KP is the proportional control parameter, TI is the integral control parameter, and TD is the derivative control parameter. Figure 2As shown, this embodiment illustrates the PID control of temperature and humidity in a refrigerated truck. Y1d(t) represents the optimal temperature value, Y1(t) represents the actual temperature value of the refrigerated truck, and e1(t) represents the control deviation between the temperature value and the actual value. Y2d(t) represents the optimal humidity value, Y2(t) represents the actual humidity value of the refrigerated truck, and e2(t) represents the control deviation between the humidity value and the actual value. Excessive humidity accelerates metabolism, causing fruits and vegetables to ferment and the local temperature to rise, leading to mold and rot. Conversely, excessively high temperature accelerates the fermentation process. These factors are interconnected and interact with each other, exhibiting strong coupling.

[0109] To achieve better preservation of transported goods, this embodiment employs a predictive decoupling method. Based on the enthalpy dynamic equilibrium theory, under equilibrium conditions, it is assumed that the moisture content in the air remains constant, and the relative humidity is affected by the change in temperature t as follows:

[0110]

[0111] Where RH1 is the actual measured relative humidity, RH2 is the relative humidity used in the calculation, Pqb1 is the saturated water vapor partial pressure at temperature t1, and Pqb2 is the saturated water vapor partial pressure at temperature t2.

[0112] To decouple the effects of temperature and humidity on preservation, this embodiment uses a decoupling coefficient, as shown in the following formula.

[0113] u H (t)=H1α2+T1(1-α1)

[0114] u T (t)=T1α1+H1(1-α2)

[0115] As shown:

[0116] Where α1 and α2 are decoupling coefficients, T1 is the output value of the temperature controller, T2 is the output value of the temperature decoupling control, H1 is the output value of the humidity controller, and H2 is the output value of the humidity decoupling control. Cross-factor decoupling control is adopted.

[0117] Finally, to ensure continuous parameter optimization during subsequent use, this implementation example... Figure 3 As shown, the genetic algorithm is improved by using niche technology, the PID parameters are optimized, and the PID is used to control the temperature and humidity of the refrigerated truck, thereby achieving the regulation of the temperature and humidity of the refrigerated truck.

[0118] First, the genetic algorithm evaluates individuals using the fitness function value, selects individuals, and optimizes the PID control parameters KP, TI, TD, and decoupling coefficients α1 and α2 for the temperature and humidity of the refrigerator. The rise time indicates the speed of system control, and the objective function is determined as follows:

[0119] When e(t)≥0

[0120]

[0121] When e(t) < 0

[0122]

[0123] Where ω1, ω2, ω3, and ω4 are weights, e(t) is the system error, u(t) is the output of the temperature and humidity controller, tu is the rise time, and the fitness function is defined as F = 1 / J.

[0124] To further improve the refrigerated quality of fruits and vegetables, this embodiment introduces an improved genetic algorithm PID control method when controlling the humidity and temperature of the refrigeration unit. The genetic algorithm optimizes the early phenomenon and random walk problem in the traditional PID control method, enabling the PID controller to adjust the temperature and humidity more accurately. This control method dynamically adjusts the output temperature and humidity of the cold air based on real-time data feedback, ensuring that fruits and vegetables are always in the best storage environment.

[0125] When the system automatically detects that the temperature of the fruit and vegetable storage environment is high, the temperature and humidity control system will respond quickly through optimized PID adjustment, adjust the airflow, and control the opening of the louvers through the hydraulic system to achieve the optimal output of airflow, ensuring that the airflow is quickly and evenly distributed in the cabinet. At the same time, the system can also monitor the storage humidity of the fruit and vegetables in real time and automatically adjust the humidity control parameters to prevent the fruit and vegetables from rotting or drying out due to excessively high or low humidity.

[0126] The above scheme achieves decoupling and optimization of PID control parameters, resulting in the following: Figure 4 The feedback controller shown can solve the technical problem of poor regulation effect, and can ensure stable temperature and humidity control in various environments. It can adapt to different external conditions and transportation time, and enhance the flexibility and reliability of the system.

[0127] This embodiment, through the above-described scheme, specifically uses temperature and humidity sensors to monitor the transport compartment in real time to obtain compartment environmental data; based on the compartment environmental data, the feedback controller performs adjustment and analysis to obtain analysis results; based on the analysis results, the hydraulic controller controls the temperature and humidity of the transport compartment to obtain control results. Therefore, during refrigerated truck transportation, the temperature and humidity of the transport compartment are monitored in real time by temperature and humidity sensors of the temperature and humidity control system to obtain compartment environmental data. Subsequently, the compartment environmental data is adjusted and analyzed by the feedback controller to obtain analysis results. Finally, based on the analysis results, the temperature and humidity of the transport compartment are controlled by the hydraulic controller to obtain control results. This solves the problem of poor preservation effect caused by the inability of refrigerated trucks to adjust according to actual temperature and humidity changes during transportation, and improves the accuracy of temperature and humidity control in refrigerated transportation.

[0128] Based on the first embodiment of this application, in the second embodiment of this application, the content that is the same as or similar to that in the first embodiment described above can be referred to the above description, and will not be repeated hereafter. Based on this, please refer to... Figure 5 In step S09, the method for controlling temperature and humidity in refrigerated transport further includes steps S091 to S093, where the feedback controller is used to adjust and analyze the data based on the vehicle environment to obtain the analysis results.

[0129] Step S091: Analyze the cabin environment data to obtain the actual values ​​of cabin temperature and cabin humidity;

[0130] Step S092: Calculate the control deviation value by performing a difference calculation based on the actual values ​​of the carriage temperature, the actual values ​​of the carriage humidity, and the layout results.

[0131] Step S093: Based on the control deviation value, the feedback controller is used to perform adjustment analysis to obtain the analysis results.

[0132] During transportation, the temperature and humidity control system continuously monitors the temperature and humidity data inside the compartment. When the temperature or humidity changes beyond the set range, the system will perform a difference calculation on the acquired data and the layout structure obtained in the above embodiment to obtain the control deviation value between the current temperature and humidity of the compartment and the moderate value. Subsequently, based on the obtained control deviation value, the opening size of the refrigerated box pipe is adjusted through the hydraulic transmission mechanism.

[0133] The temperature and humidity control system in this embodiment is as follows: Figure 6As shown, it includes an ice box storage chamber 1, an air outlet 2, a humidification pipe 3, an oil inlet pipe 4, an oil return pipe 5, a water pump 6, a water reservoir 7, an oil pump 8, an oil reservoir 9, an oil inlet pipe 10, and an oil return pipe 11. The ice box storage chamber refers to the transport compartment in this embodiment, which serves as a carrier for transporting goods. The oil inlet pipe and the oil return pipe are used to regulate the pressure of the hydraulic system. The water pump and the oil pump are used to store the hydraulic oil and water used. If it is necessary to increase the cold air flow, the hydraulic system will increase the pressure and increase the flow of the oil inlet pipe, driving the gear rack mechanism to enlarge the opening of the channel. If it is necessary to reduce the cold air flow, the pressure will be reduced and the opening of the channel will be narrowed, thereby regulating the air flow speed and the accuracy of temperature and humidity control.

[0134] By using a gear and rack mechanism in a hydraulic transmission system, a stable and efficient solution is provided, especially in low-temperature environments. This avoids the limitations of motor drives and ensures reliable operation of the system under different weather conditions. In this embodiment, the flow and distribution of cold air are precisely adjusted by oil pumps, water pumps, and water tanks, which improves the accuracy of temperature and humidity control and provides more efficient and stable technical support for refrigerated transportation.

[0135] Specifically, step S092 above, which involves calculating the control deviation value based on the actual values ​​of the carriage temperature, humidity, and layout results, includes:

[0136] Step S0921: Analyze the layout results to obtain the values ​​of moderate temperature and moderate humidity;

[0137] Step S0922: Calculate the temperature control deviation value by using the difference between the appropriate temperature value and the actual temperature value of the carriage.

[0138] Step S0923: Calculate the humidity control deviation value by comparing the humidity moderate value with the actual humidity value in the carriage.

[0139] Step S0924: Summarize and analyze the layout results, temperature control deviation, and humidity control deviation values ​​to obtain the control deviation values.

[0140] It should be clear that humidity plays a crucial role in refrigeration and cooling processes. The temperature inside a refrigerator is lowered by airflow, and the evaporation heat from moisture in the air helps reduce the temperature inside the refrigerator. In high humidity environments, the moisture in the air has a higher heat exchange capacity, helping to maintain the flow and stability of the cold air while lowering the temperature. Therefore, appropriate humidity helps to distribute temperature evenly, thereby improving cooling efficiency.

[0141] However, excessive humidity can also have negative effects. High humidity can saturate the air, reducing its heat transfer capacity and hindering the flow of cold air, thus affecting the cooling speed. In extreme cases, excessive humidity can even lead to frost or ice formation, affecting the normal operation of the refrigeration system. Therefore, properly controlling humidity levels is crucial for the efficiency of the cooling process.

[0142] Low humidity is particularly harmful to fruits and vegetables. During storage, fruits and vegetables continue to respire, consuming their internal water. If the ambient humidity is too low, the moisture on the surface of the fruits and vegetables will evaporate rapidly, causing them to lose water. This water loss will not only make the surface of the fruits and vegetables dry, wrinkled, and even cracked, but it will also affect their taste and appearance. For example, leafy vegetables and strawberries have a high humidity requirement; if the humidity is too low, they will dry out and rot quickly, reducing their market value.

[0143] In addition, low humidity can cause cracks and dryness on the surface of fruits and vegetables, which provides a way for bacteria, mold and other microorganisms to invade, thus accelerating the decay process. For some perishable fruits and vegetables, such as apples, grapes and citrus, low humidity will significantly shorten their shelf life and affect their storage effect.

[0144] Low humidity not only affects the quality of fruits and vegetables but also has adverse effects on the refrigeration equipment itself. When humidity is too low, there is less moisture in the air, resulting in uneven airflow and potentially uneven distribution of cold air within the refrigerator, reducing cooling efficiency. Furthermore, low humidity can also cause condensation inside the refrigeration equipment, leading to frost buildup and even blockages or malfunctions, thus affecting the normal operation of the entire refrigeration system.

[0145] Therefore, maintaining appropriate humidity not only helps preserve fruits and vegetables but also ensures the efficient operation of refrigeration equipment. Precise humidity control is crucial for cold chain transportation and storage; excessively low humidity will inevitably lead to a series of problems, affecting the freshness of fruits and vegetables and the effectiveness of transportation.

[0146] In this refrigerated transport system, since the gas inside the container is in a continuous flow state, ensuring that fruits and vegetables are always kept under suitable temperature and humidity conditions is crucial. Therefore, this embodiment analyzes the layout results to obtain suitable temperature and humidity values. Subsequently, the control deviation value in the current transport compartment is determined using these suitable temperature and humidity values. At this point, if... Figure 7The fan motor shown, fan 12, does not stop working. It continuously delivers cold air from the cold storage chamber to the refrigerated cabinet. However, cold air usually contains a lot of moisture. Therefore, when the temperature reaches the optimal refrigeration conditions, the humidity inside the cabinet will also increase accordingly. In this embodiment, by precisely controlling the flow rate and distribution of cold air through the return air vent 13, it can be ensured that the cold air evenly covers the entire refrigerated cabinet, avoiding some areas from being too cold or too hot, thereby improving refrigeration efficiency.

[0147] More specifically, the control results include temperature control results and humidity control results. Step S10 above, based on the analysis results, involves controlling the temperature and humidity of the transport compartment using the hydraulic controller to obtain the control results, and includes the following steps:

[0148] Step S101: Determine the temperature adjustment value and humidity adjustment value of the carriage based on the analysis results;

[0149] Step S102: Based on the temperature adjustment value of the carriage, the opening size of the louvers is adjusted by the hydraulic controller to obtain the temperature control result;

[0150] Step S103: Based on the humidity adjustment value of the carriage, the dehumidifier and humidifier are adjusted by the hydraulic controller to obtain the humidity control result.

[0151] In this embodiment, the system used for adjustment employs, as follows: Figure 8 The hydraulic transmission system shown, compared with the electric drive, includes a temperature and humidity sensor 14, a cylindrical gear 15, a louver 16, a spur gear 17, a cold air delivery pipe 18, a hydraulic oil reservoir 19, a water reservoir 20, a rack 21, a conical air outlet 22, a dehumidifier 23, a motor 24, a return air outlet 25, and a cold storage chamber 26. Its stability at low temperatures can more effectively avoid motor failure or restart due to low temperature environment. The hydraulic system transmits force through the pressure of hydraulic oil to drive the gear and rack mechanism to open or close the channel.

[0152] like Figure 9 As shown, when adjustment is needed, the hydraulic oil is regulated through the inlet chamber 27 and the return chamber 28. As the hydraulic oil pressure gradually increases, the hydraulic oil pushes the spring 29, causing the rack 30 to rotate. The cylindrical rack 31 connected to the rack then moves forward, resulting in the adjustment of the louver 32. The movement of the rack is the core of the entire transmission process. Precise rack drive allows the system to achieve linear and stable operation. As the rack moves forward, it drives the meshing cylindrical gear to rotate. The rotation of the cylindrical gear further amplifies the power through the action of the coaxial gear, driving the various parts of the mechanical structure to work together, ultimately achieving the axial movement of the louver. The working principle of the gear and rack mechanism is as follows: Figure 10 As shown, the gear and rack mechanism consists of a linear rack 32 and a meshing cylindrical gear 33. The hydraulic system drives the gear to rotate by controlling the pressure of hydraulic oil through the oil inlet chamber 34, oil return chamber 35, spring 36, and spring 37. This further pushes the rack 38 to move in a linear direction, thereby adjusting the opening size of the refrigeration compartment pipe corresponding to the gear 39. By adjusting the opening and closing degree of the channel, the hydraulic transmission system can precisely control the flow and distribution of cold air, ensuring precise temperature and humidity regulation. In addition, the gear and rack structure has good transmission efficiency, high precision, and can provide stable torque output. This allows the system to maintain efficient operation under different environmental conditions, especially at low temperatures, without being affected by the performance degradation of the motor. In low-temperature environments, the hydraulic oil of the hydraulic system has good low-temperature adaptability. Unlike electric systems, which may experience difficulty starting the motor or a decrease in sensitivity due to low temperatures, the hydraulic oil can still maintain fluidity at low temperatures, thus ensuring that the gear and rack mechanism can stably adjust the opening degree of the channel inside the refrigeration compartment, ensuring uniform distribution of cold air and normal operation of the control system.

[0153] The movement of the blinds is a key aspect of temperature control; this implementation example... Figure 11 As shown, the oil volume is adjusted in the oil inlet pipe 40 or the oil return pipe 41 through the spur gear movement mechanism, thereby changing the opening degree of the louvers. The opening degree of the louvers can be automatically adjusted according to the pressure of the hydraulic oil. When the system detects that the temperature in the transportation environment is high or the optimal refrigeration temperature of fruits and vegetables is high, the hydraulic transmission system will drive the louvers to open more, ensuring that the air outlet of the cold air delivery pipeline is fully open, thereby increasing the cold air flow and minimizing the temperature of fruits and vegetables to ensure the refrigeration effect.

[0154] This embodiment uses hydraulic transmission instead of traditional electric drive because hydraulic systems exhibit higher reliability in low-temperature environments. Traditional electric drives may fail or respond slowly in low-temperature environments, but hydraulic transmission systems rely on pressure changes rather than current, thus enabling stable operation in extremely cold environments. The pressure regulator, through the combined action of gravity and springs, ensures that the system can still freely adjust the airflow and louver opening even when power is insufficient.

[0155] This refrigerated transport system reduces reliance on external power through the efficient use of hydraulic oil, making it particularly suitable for long-term, high-frequency transport tasks. Because the hydraulic system is unaffected by fluctuations in external power, it can operate stably and maintain high efficiency. At the same time, the intelligent PID control system dynamically adjusts system parameters based on real-time feedback of temperature and humidity, avoiding energy waste and achieving efficient energy utilization.

[0156] In this embodiment, as the fan rotates, the cold air in the cold storage chamber is efficiently transported to the refrigerated cabinet through the cold air ducts, gradually reducing the temperature inside the cabinet. This process is achieved through the precisely controlled layout of the fan and cold air ducts, ensuring that the cold air can be evenly distributed throughout the entire cabinet, avoiding local overcooling or overheating. Temperature and humidity sensors inside the refrigerated cabinet monitor changes in the internal environment in real time. Once the humidity and temperature inside the cabinet reach the preset optimal refrigeration conditions, the system will immediately provide feedback and make adjustments.

[0157] When the temperature and humidity reach their optimal values, the system will calculate the most suitable current based on the type of fruits and vegetables being transported and their placement, and then send it to the pressure regulator. Each type of fruit and vegetable has different temperature and humidity requirements during transportation. Especially during refrigeration, the heat generated by aerobic respiration and changes in ambient temperature will affect the storage conditions of the fruits and vegetables. To cope with these changes, the system will precisely adjust the amount of cold air delivered and the air volume of the refrigerated box according to the type of fruits and vegetables and the temperature and humidity conditions inside the box.

[0158] When current is supplied to the pressure regulator, the magnetic force of the solenoid valve opens the return oil line, and the hydraulic oil begins to flow. As the hydraulic oil flows, the pressure in the inlet chamber gradually decreases. During this process, the system uses the elastic force of the spring to make the rack move in the opposite direction, thereby driving the cylindrical gear to rotate. The rotation of the cylindrical gear not only drives the rotation of the coaxial gear, but also causes the louvers connected to it to move axially, ultimately adjusting the opening of the air outlet.

[0159] The key to the above process lies in the precise adjustment of the louver opening. When the temperature and humidity inside the refrigerated compartment reach the set values, the opening of the louvers is precisely controlled by hydraulic transmission to meet the heat demand generated by the aerobic respiration of fruits and vegetables. In this way, the system can ensure the dynamic balance of the temperature inside the refrigerated truck. At the same time, the system will also continuously monitor the temperature changes of the external environment and adjust the amount of cold air delivery as needed to ensure that the fruits and vegetables are always under suitable temperature and humidity conditions, thereby maximizing their shelf life.

[0160] To improve the uniformity of cooling effect in refrigerated trucks, this embodiment also optimizes the design of the cooling pipe outlets and louvers. The specific solution is based on the principles of fluid mechanics. According to the basic knowledge of fluid mechanics, the smaller the opening diameter in a channel, the faster the airflow velocity. At the same time, when the cooling airflow is transmitted in the pipe, the air temperature at the pipe outlet farther from the cold storage chamber is higher, while the air temperature at the outlet closer to the cold storage chamber is lower. This is because heat exchange occurs during the transmission of cold air in the pipe, causing the airflow temperature to increase with the increase of distance.

[0161] To address this issue, this embodiment employs a gradually increasing aperture diameter in the cooling pipe design. Specifically, the aperture diameter of the cooling pipe outlet furthest from the cold storage chamber is the largest, ensuring that the cold air can flow out smoothly at a high speed and high temperature, thereby shortening the lag time of temperature changes. Conversely, the aperture diameter of the outlet closer to the cold storage chamber is smaller, which helps control the airflow speed and ensures a moderate cold air flow.

[0162] To further improve the cooling effect and prevent cold air from blowing directly on fruits and vegetables and causing frost damage, a filter screen is also installed at the air outlet in this embodiment. The filter screen design can effectively disperse the cold air flow, so that the cold air enters the refrigerated box evenly, avoiding local cold air directly hitting the surface of fruits and vegetables, and reducing the excessive cooling of fruits and vegetables by the cold air. Through this series of designs, the temperature and humidity conditions inside the refrigerated truck can be more evenly distributed, thereby ensuring the quality and freshness of fruits and vegetables during transportation.

[0163] Optimized airflow reduces unnecessary energy waste, allowing the cold air in the cold storage box to be delivered to each area more efficiently, reducing the burden on the refrigeration system and saving energy.

[0164] Further, after step S103 above, where the dehumidifier and humidifier are adjusted according to the humidity adjustment value of the passenger compartment using the hydraulic controller to obtain the humidity control result, the method further includes:

[0165] Step S104: Detect moisture in the dehumidifier;

[0166] Step S105: When the dehumidifier detects that the adsorbed moisture exceeds the storage threshold, the water is extracted by a water pump and stored in a water tank.

[0167] Step S106: When the hydraulic controller controls the humidifier to make adjustments, the water in the water storage tank is transported to the humidifier.

[0168] To maintain a suitable humidity environment for fruits and vegetables during transportation, this implementation, for example... Figure 12 As shown, an additional gas dehumidifier and humidifier are installed at the return air vent. The humidity sensor monitors the humidity inside the refrigerator in real time. When the humidity reaches the set optimal level, the humidifier tube 42 automatically shuts off to avoid excessive moisture accumulation. At the same time, the system absorbs excess moisture through the dehumidifier tube 43. The moisture flowing through the gas is absorbed by the dehumidifier tube and introduced into the dewatering tube.

[0169] When the dehumidifier absorbs a certain amount of water, the water pump 44 will start and store the excess water in the water tank 45. This stored water will be used for future humidification needs to ensure the balance of temperature and humidity conditions during the storage of fruits and vegetables. Through this intelligent humidity control system, the humidity inside the refrigerator is always maintained within the optimal range, effectively avoiding excessive humidity or dryness, and ensuring the long-term freshness and transportation efficiency of fruits and vegetables.

[0170] Similarly, in order to make reasonable use of hydraulic oil, after recovering the hydraulic oil, the return oil pipe 46 in this embodiment returns the hydraulic oil to the oil reservoir 48 through the return oil branch pipe 47. When the hydraulic oil needs to be pressurized, the oil pump 49 extracts the hydraulic oil from the oil reservoir and transmits it to the oil inlet pipe 51 through the oil inlet branch pipe 50, thus realizing the reasonable use of hydraulic oil.

[0171] This embodiment, through the above-described scheme, specifically obtains the actual values ​​of the compartment temperature and humidity by analyzing the compartment environmental data; calculates the difference between the actual compartment temperature and humidity values ​​and the layout results to obtain a control deviation value; based on the control deviation value, the feedback controller performs adjustment and analysis to obtain the analysis result. Therefore, during refrigerated truck transportation, the temperature and humidity sensors of the temperature and humidity control system monitor the transport compartment in real time to obtain compartment environmental data. Subsequently, the feedback controller adjusts and analyzes the compartment environmental data to obtain the analysis result. Finally, based on the analysis result, the hydraulic controller controls the temperature and humidity of the transport compartment to obtain the control result. This solves the problem of poor preservation effect caused by the inability of refrigerated trucks to adjust according to actual temperature and humidity changes during transportation, and improves the accuracy of temperature and humidity control in refrigerated transportation.

[0172] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the refrigerated transportation temperature and humidity control method of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0173] This application also provides a temperature and humidity control device for refrigerated transportation; please refer to [reference needed]. Figure 13 The refrigerated transport temperature and humidity control device is applied to a temperature and humidity control system, which includes a feedback controller, a hydraulic controller, and a transport compartment, comprising:

[0174] Monitoring module 10 is used to monitor the transport compartment in real time using temperature and humidity sensors to obtain compartment environmental data.

[0175] Analysis module 20 is used to perform adjustment and analysis through the feedback controller based on the carriage environment data to obtain analysis results;

[0176] The control module 30 is used to control the temperature and humidity of the transport compartment through the hydraulic controller based on the analysis results, and obtain the control results.

[0177] The refrigerated transport temperature and humidity control device provided in this application, employing the refrigerated transport temperature and humidity control method described in the above embodiments, can solve the technical problem of poor preservation effect caused by the inability of refrigerated trucks to adjust according to actual temperature and humidity changes during transportation. Compared with the prior art, the beneficial effects of the refrigerated transport temperature and humidity control device provided in this application are the same as those of the refrigerated transport temperature and humidity control method provided in the above embodiments, and other technical features of the refrigerated transport temperature and humidity control device are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0178] This application provides a refrigerated transport temperature and humidity control device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the refrigerated transport temperature and humidity control method in the above embodiment 1.

[0179] The following is for reference. Figure 14 This document illustrates a structural schematic diagram of a refrigerated transport temperature and humidity control device suitable for implementing embodiments of this application. The refrigerated transport temperature and humidity control device in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), and vehicle terminals (e.g., vehicle navigation terminals), as well as fixed terminals such as digital TVs and desktop computers. Figure 14 The refrigerated transport temperature and humidity control device shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0180] like Figure 14As shown, the refrigerated transport temperature and humidity control device may include a processing unit 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage device 1003 into a random access memory (RAM) 1004. The RAM 1004 also stores various programs and data required for the operation of the refrigerated transport temperature and humidity control device. The processing unit 1001, ROM 1002, and RAM 1004 are interconnected via a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Typically, the following systems can be connected to I / O interface 1006: input devices 1007 including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices 1008 including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices 1003 including, for example, magnetic tapes, hard disks, etc.; and communication devices 1009. Communication device 1009 allows the refrigerated transport temperature and humidity control equipment to communicate wirelessly or wiredly with other devices to exchange data. Although the figure shows a refrigerated transport temperature and humidity control equipment with various systems, it should be understood that it is not required to implement or possess all the systems shown. More or fewer systems can be implemented alternatively.

[0181] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from ROM 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0182] The refrigerated transport temperature and humidity control device provided in this application, employing the refrigerated transport temperature and humidity control method described in the above embodiments, can solve the technical problem of poor preservation effect caused by the inability of refrigerated trucks to adjust according to actual temperature and humidity changes during transportation. Compared with the prior art, the beneficial effects of the refrigerated transport temperature and humidity control device provided in this application are the same as those of the refrigerated transport temperature and humidity control method provided in the above embodiments, and other technical features of this refrigerated transport temperature and humidity control device are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0183] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0184] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0185] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the refrigerated transport temperature and humidity control method in the above embodiments.

[0186] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0187] The aforementioned computer-readable storage medium may be included in the refrigerated transport temperature and humidity control equipment; or it may exist independently and not be assembled into the refrigerated transport temperature and humidity control equipment.

[0188] The aforementioned computer-readable storage medium carries one or more programs. When these programs are executed by the refrigerated transport temperature and humidity control equipment, the refrigerated transport temperature and humidity control equipment: performs real-time monitoring of the transport compartment using temperature and humidity sensors to obtain compartment environmental data; adjusts and analyzes the compartment environmental data using the feedback controller to obtain analysis results; and controls the temperature and humidity of the transport compartment using the hydraulic controller based on the analysis results to obtain control results.

[0189] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0190] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0191] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0192] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the above-described refrigerated transport temperature and humidity control method. This solves the technical problem that refrigerated trucks cannot adjust to actual temperature and humidity changes during transport, resulting in poor preservation. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the refrigerated transport temperature and humidity control method provided in the above embodiments, and will not be elaborated upon here.

[0193] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the refrigerated transport temperature and humidity control method described above.

[0194] The computer program product provided in this application can solve the technical problem that refrigerated trucks cannot adjust according to actual temperature and humidity changes during transportation, resulting in poor preservation effects. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as those of the refrigerated transportation temperature and humidity control method provided in the above embodiments, and will not be repeated here.

[0195] The above description is only a part of the embodiments of this application and does not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application and using the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this application.

Claims

1. A method for controlling temperature and humidity during refrigerated transportation, characterized in that, The method is applied to a temperature and humidity control system, which includes a feedback controller, a hydraulic controller, and a transport vehicle. The method includes: The environmental data of the transport compartment is obtained by real-time monitoring using temperature and humidity sensors. Prior to the step of obtaining real-time environmental data of the transport vehicle using temperature and humidity sensors, the method further includes: Analyze the shipping order to obtain the transported goods and their preservation requirements; The layout of the carriage is determined based on the transported goods and preservation requirements, and the layout result is obtained. The step of arranging the carriage layout according to the transported goods and preservation requirements to obtain the layout result includes: The dimensions and piping of the transport vehicle are obtained by reading its design parameters. The cargo is sorted according to the carriage pipes and preservation requirements to obtain the sorting result; Based on the sorting results and the dimensions of the carriage, the transported goods are laid out in the carriage to obtain the layout result; The layout result is sent to the cargo transportation terminal, which then moves the transported goods into the transport compartment for storage according to the layout result. Based on the cabin environment data, the feedback controller is used for adjustment and analysis to obtain the analysis results. Prior to the step of adjusting and analyzing the passenger compartment environment data using the feedback controller to obtain the analysis results, the method further includes: The relative humidity of the transport compartment is measured. Based on the preset decoupling coefficient, the output value of the feedback controller is decoupled and analyzed by testing the temperature and the relative humidity to obtain the output value of the temperature controller and the output value of the humidity controller. The decoupling coefficient, the output value of the temperature controller, and the output value of the humidity controller are optimized using a genetic algorithm to obtain optimized parameters. The feedback controller is optimized using the optimization parameters to obtain the controller optimization result; The step of adjusting and analyzing the feedback controller based on the carriage environment data to obtain the analysis results includes: The actual values ​​of the compartment temperature and humidity are obtained by analyzing the compartment environmental data. The control deviation value is obtained by calculating the difference between the actual values ​​of the temperature and humidity in the carriage and the layout results. The step of calculating the control deviation value based on the difference between the actual temperature value of the carriage, the actual humidity value of the carriage, and the layout result includes: The analysis of the layout results yielded values ​​for moderate temperature and moderate humidity. The temperature control deviation value is obtained by calculating the difference between the optimal temperature value and the actual temperature value of the carriage. The humidity control deviation value is obtained by calculating the difference between the moderate humidity value and the actual humidity value of the carriage. The layout results, temperature control deviation, and humidity control deviation values ​​are summarized and analyzed to obtain the control deviation values. Based on the control deviation value, the feedback controller is used for adjustment analysis to obtain the analysis results. Based on the analysis results, the temperature and humidity of the transport compartment are controlled by the hydraulic controller to obtain the control results; The control results include temperature control results and humidity control results. The step of controlling the temperature and humidity of the transport compartment based on the analysis results and obtaining the control results through the hydraulic controller includes: Based on the analysis results, the temperature and humidity control values ​​for the passenger compartment are determined. Based on the temperature adjustment value of the carriage, the opening size of the louvers is adjusted by the hydraulic controller to obtain the temperature control result; Based on the humidity adjustment value of the carriage, the dehumidifier and humidifier are adjusted by the hydraulic controller to obtain the humidity control result.

2. The method as described in claim 1, characterized in that, After the step of adjusting the dehumidifier and humidifier via the hydraulic controller according to the humidity adjustment value of the carriage to obtain the humidity control result, the method further includes: Moisture content is detected in the dehumidifier; When the dehumidifier detects that the adsorbed moisture exceeds the storage threshold, the water is extracted by a water pump and stored in a water tank. When the hydraulic controller adjusts the humidifier, water from the water reservoir is transported to the humidifier.

3. A temperature and humidity control device for refrigerated transport, characterized in that, The device employs the refrigerated transport temperature and humidity control method as described in claim 1. The device is applied to a temperature and humidity control system, which includes a feedback controller, a hydraulic controller, and a transport vehicle, comprising: The monitoring module is used to monitor the transport compartment in real time using temperature and humidity sensors to obtain compartment environmental data. The analysis module is used to perform adjustment and analysis based on the carriage environment data through the feedback controller to obtain analysis results; The control module is used to control the temperature and humidity of the transport compartment through the hydraulic controller based on the analysis results, and obtain the control results.

4. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the refrigerated transport temperature and humidity control method as described in any one of claims 1 to 2.

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