Refrigerated transportation temperature and humidity control method and device and storage medium

Abstract

The invention discloses a refrigerated transportation temperature and humidity control method and device and a storage medium, and relates to the technical field of transportation, and the method comprises the steps: carrying out the real-time monitoring of a transportation carriage through a temperature sensor and a humidity sensor, and obtaining the environment data of the carriage; according to the carriage environment data, adjustment analysis is carried out through the feedback controller, and an analysis result is obtained; and on the basis of the analysis result, the temperature and humidity of the transport carriage are controlled through the hydraulic controller, and a control result is obtained. Therefore, the problem that the fresh-keeping effect is poor due to the fact that the refrigerator car cannot be adjusted according to actual temperature and humidity changes in the transportation process is solved, and the accuracy of temperature and humidity control over refrigerated transportation is improved.

Description

Technical Field

[0001] This application relates to the field of transportation technologies, and particularly to a temperature and humidity control method, device, and storage medium for refrigerated transportation. Background Art

[0002] In the current market, the temperature and humidity control technologies for refrigerated trucks mainly rely on an efficient compression refrigeration system and an intelligent temperature and humidity monitoring system. The refrigeration system of a refrigerated truck usually includes a compressor, a condenser, and an evaporator, which maintain a low-temperature environment inside the carriage through the principle of cyclic refrigeration. The temperature control system uses electronic temperature control technology, monitors the temperature in real time through sensors, and automatically adjusts the operation of the compressor to ensure the stability of the temperature inside the carriage. Humidity control is achieved through a humidifier and a dehumidifier to maintain an appropriate humidity level and prevent the goods from being damaged due to excessive dryness or dampness.

[0003] However, in the pipeline design of refrigerated trucks, it is crucial to ensure the stability of temperature and humidity control. Especially when environmental conditions change (such as extremely low temperatures or high temperatures), the traditional motor drive mechanism may cause low-temperature failure.

[0004] The above content is only used to assist in understanding 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 purpose of this application is to provide a temperature and humidity control method, device, and storage medium for refrigerated transportation, aiming to solve the technical problem that the fresh-keeping effect is not good because a refrigerated truck cannot be adjusted according to actual temperature and humidity changes during transportation.

[0006] To achieve the above purpose, this application proposes a temperature and humidity control method for refrigerated transportation. The method is applied to a temperature and humidity control system, which includes a feedback controller, a hydraulic controller, and a transportation carriage. The method includes:

[0007] Real-time monitoring of the transportation carriage through a temperature sensor and a humidity sensor to obtain carriage environment data;

[0008] According to the carriage environment data, adjusting and analyzing through the feedback controller to obtain an analysis result;

[0009] Based on the analysis result, controlling the temperature and humidity of the transportation carriage through the hydraulic controller to obtain a control result.

[0010] In an embodiment, before the step of real-time monitoring of the transportation carriage through a temperature sensor and a humidity sensor to obtain carriage environment data, the method further includes:

[0011] Analyzing the transportation order to obtain the transported goods and the fresh-keeping requirements;

[0012] Perform a carriage layout according to the transported goods and the freshness preservation requirements to obtain a layout result;

[0013] Send the layout result to the goods transportation end, and the goods transportation end transports the transported goods to the transportation carriage for storage according to the layout result.

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

[0015] Read the design parameters of the transportation carriage to obtain the carriage size and the carriage pipeline;

[0016] Sort the positions of the goods according to the carriage pipeline and the freshness preservation requirements to obtain a sorting result;

[0017] Perform a carriage layout on the transported goods based on the sorting result and the carriage size to obtain a layout result.

[0018] In one embodiment, before the step of performing adjustment and analysis through the feedback controller according to the carriage environment data to obtain an analysis result, the method further includes:

[0019] Measure the transportation carriage to obtain the relative humidity of the transportation carriage;

[0020] According to a preset decoupling coefficient, perform decoupling analysis on the output value of the feedback controller 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] Perform an optimization calculation on the decoupling coefficient, the output value of the temperature controller, and the output value of the humidity controller through a genetic algorithm to obtain optimization parameters;

[0022] Optimize the feedback controller through the optimization parameters to obtain an optimized result of the controller.

[0023] In one embodiment, the step of performing adjustment and analysis through the feedback controller according to the carriage environment data to obtain an analysis result includes:

[0024] Analyze the carriage environment data to obtain the actual carriage temperature value and the actual carriage humidity value;

[0025] Perform a difference calculation according to the actual carriage temperature value, the actual carriage humidity value, and the layout result to obtain a control deviation value;

[0026] Based on the control deviation value, perform adjustment and analysis through the feedback controller to obtain an analysis result.

[0027] In one embodiment, the step of calculating a control deviation value by taking the difference according to the actual value of the carriage temperature, the actual value of the carriage humidity, and the layout result includes:

[0028] Analyze the layout result to obtain a temperature moderate value and a humidity moderate value;

[0029] Calculate the difference between the actual value of the carriage temperature and the temperature moderate value to obtain a temperature control deviation value;

[0030] Calculate the difference between the actual value of the carriage humidity and the humidity moderate value to obtain a humidity control deviation value;

[0031] Perform a summary analysis on the layout result, the temperature control deviation, and the humidity control deviation value to obtain a control deviation value.

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

[0033] Determine a carriage temperature adjustment value and a carriage humidity adjustment value based on the analysis result;

[0034] According to the carriage temperature adjustment value, adjust the opening degree of the shutter through the hydraulic controller to obtain a temperature control result;

[0035] According to the carriage humidity adjustment value, control the dehumidifier and the humidifier through the hydraulic controller to make adjustments to obtain a humidity control result.

[0036] In one embodiment, after the step of controlling the dehumidifier and the humidifier through the hydraulic controller according to the carriage humidity adjustment value to obtain a humidity control result, the method further includes:

[0037] Detect the moisture of the dehumidifier;

[0038] When it is detected that the adsorbed moisture of the dehumidifier exceeds the storage threshold, extract the moisture through a water pump and store the extracted moisture in a water storage device;

[0039] When the hydraulic controller controls the humidifier to make adjustments, transport the moisture in the water storage device to the humidifier.

[0040] In addition, to achieve the above object, the present application also proposes a refrigerated transport temperature and humidity control device. The device is applied to a temperature and humidity control system, and the temperature and humidity control system includes a feedback controller, a hydraulic controller, and a transport carriage, including:

[0041] A monitoring module for real-time monitoring of the transportation carriage through a temperature sensor and a humidity sensor to obtain carriage environment data;

[0042] An analysis module for performing adjustment analysis through the feedback controller based on the carriage environment data to obtain an analysis result;

[0043] A control module for controlling the temperature and humidity of the transportation carriage through the hydraulic controller based on the analysis result to obtain a control result.

[0044] In addition, to achieve the above object, the present application also proposes a storage medium, which 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, the steps of the temperature and humidity control method for refrigerated transportation as described above are implemented.

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

[0046] A temperature and humidity control method, device and storage medium for refrigerated transportation proposed by an embodiment of the present application monitor the transportation carriage in real time through a temperature sensor and a humidity sensor to obtain carriage environment data; perform adjustment analysis through the feedback controller based on the carriage environment data to obtain an analysis result; and control the temperature and humidity of the transportation carriage through the hydraulic controller based on the analysis result to obtain a control result. Thus, during the transportation of a refrigerated truck, the temperature sensor and humidity sensor of the temperature and humidity control system are used to monitor the transportation carriage in real time to obtain carriage environment data, and then the feedback controller is used to perform adjustment analysis on the carriage environment data to obtain an analysis result. Finally, in combination with the analysis result, the hydraulic controller is used to control the temperature and humidity of the transportation carriage to obtain a control result, solving the problem that the refrigerated truck cannot be adjusted according to the actual temperature and humidity changes during transportation, resulting in poor preservation effect, and improving the accuracy of temperature and humidity control for refrigerated transportation. Description of the Drawings

[0047] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0048] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0049] Figure 1It is a schematic flowchart provided for the first embodiment of the temperature and humidity control method for refrigerated transportation in this application;

[0050] Figure 2 It is a schematic diagram of the temperature and humidity PID control structure of a refrigerated truck involved in the temperature and humidity control method for refrigerated transportation in this application;

[0051] Figure 3 It is a schematic diagram of using the genetic algorithm to optimize the PID parameters involved in the temperature and humidity control method for refrigerated transportation in this application;

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

[0053] Figure 5 It is a schematic flowchart provided for the second embodiment of the temperature and humidity control method for refrigerated transportation in this application;

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

[0055] Figure 7 It is a schematic diagram of the fan motor working involved in the temperature and humidity control method for refrigerated transportation in this application;

[0056] Figure 8 It is a schematic diagram of the distribution of components of the temperature and humidity control system in the transportation compartment involved in the temperature and humidity control method for refrigerated transportation in this application;

[0057] Figure 9 It is a schematic diagram of using hydraulic oil to adjust the louvers involved in the temperature and humidity control method for refrigerated transportation in this application;

[0058] Figure 10 It is another schematic diagram of using hydraulic oil to adjust the louvers involved in the temperature and humidity control method for refrigerated transportation in this application;

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

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

[0061] Figure 13 It is a schematic diagram of the module structure of the temperature and humidity control device for refrigerated transportation in the embodiment of this application;

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

[0063] The realization of the purpose, functional features and advantages of this application will be further described with reference to the accompanying drawings in combination with the embodiments. Detailed implementation manners

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

[0065] In order to better understand the technical solutions of this application, the following will be described in detail in combination with the drawings in the specification and specific implementation manners.

[0066] The main solution of the embodiment of this application is as follows: Parse the transportation order to obtain the transported goods and the freshness preservation requirements; perform carriage layout according to the transported goods and the freshness preservation requirements to obtain a layout result; send the layout result to the goods transportation terminal, and the goods transportation terminal transports the transported goods to the transportation carriage for storage according to the layout result. Read the design parameters of the transportation carriage to obtain the carriage size and carriage pipelines; perform sorting of the goods positions according to the carriage pipelines and the freshness preservation requirements to obtain a sorting result; perform carriage layout on the transported goods based on the sorting result and the carriage size to obtain a layout result. Measure the relative humidity of the transportation carriage; perform decoupling analysis on the output value of the feedback controller by testing the temperature and the relative humidity according to the 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 through a genetic algorithm to obtain optimized parameters; optimize the feedback controller through the optimized parameters to obtain the optimized result of the controller. Parse the carriage environment data to obtain the actual value of the carriage temperature and the actual value of the carriage humidity; perform difference calculation according to the actual value of the carriage temperature, the actual value of the carriage humidity, and the layout result to obtain a control deviation value; based on the control deviation value, perform adjustment analysis through the feedback controller to obtain an analysis result. Analyze the layout result to obtain the temperature moderate value and the humidity moderate value; perform difference calculation on the actual value of the carriage temperature through the temperature moderate value to obtain a temperature control deviation value; perform difference calculation on the actual value of the carriage humidity through the humidity moderate value to obtain a humidity control deviation value; perform summary analysis on the layout result, the temperature control deviation, and the humidity control deviation value to obtain a control deviation value. Determine the carriage temperature adjustment value and the carriage humidity adjustment value based on the analysis result; adjust the opening degree of the louver through the hydraulic controller according to the carriage temperature adjustment value to obtain a temperature control result; control the dehumidifier and the humidifier to be adjusted through the hydraulic controller according to the carriage humidity adjustment value to obtain a humidity control result. Detect the moisture content of the dehumidifier; when it is detected that the adsorbed moisture of the dehumidifier exceeds the storage threshold, extract the moisture through a water pump and store the extracted moisture in a water storage device; when the hydraulic controller controls the humidifier to be adjusted, transport the moisture in the water storage device to the humidifier. Thus, the problem that the refrigerated truck cannot be adjusted according to the actual temperature and humidity changes during transportation, resulting in poor freshness preservation effect, is solved, the control of the temperature and humidity in refrigerated transportation is realized, and the accuracy of the temperature and humidity control in refrigerated transportation is improved.Based on the solution of the present invention, starting from the problem that in reality, when environmental conditions change (such as extremely low temperature or high temperature weather), the traditional motor drive mechanism may cause low-temperature failure and poor preservation effect, a temperature and humidity control method for refrigerated transportation is designed, and the effectiveness of the temperature and humidity control method for refrigerated transportation of the present invention is verified when controlling the temperature and humidity of refrigerated transportation. Finally, the accuracy rate of controlling the temperature and humidity of refrigerated transportation by the method of the present invention has been significantly improved.

[0067] In this embodiment, for the convenience of description, the temperature and humidity control device for refrigerated transportation is used as the execution subject for elaboration below.

[0068] Since in the prior art, the temperature and humidity control technology of refrigerated trucks mainly relies on an efficient compression refrigeration system and an intelligent temperature and humidity monitoring system. The refrigeration system of a refrigerated truck usually includes a compressor, a condenser and an evaporator, and maintains a low-temperature environment in the carriage through the principle of cyclic refrigeration. The temperature control system uses electronic temperature control technology, monitors the temperature in real time through sensors, and automatically adjusts the operation of the compressor to ensure the stability of the temperature in the carriage. Humidity control is achieved through a humidifier and a dehumidifier to maintain an appropriate humidity level and prevent the goods from being damaged due to excessive dryness or humidity. However, the traditional motor drive mechanism may cause low-temperature failure, resulting in a decline in the preservation effect of the transportation carriage.

[0069] The present application provides a solution. In the temperature and humidity control system, a humidity sensor and a temperature sensor are used to monitor the transportation carriage to obtain carriage environment data. At the same time, through a feedback controller for adjustment and analysis, an analysis result is obtained. Finally, a hydraulic controller is used to control the temperature and humidity of the transportation carriage, realizing the control of the temperature and humidity of refrigerated transportation and providing better services for users.

[0070] As can be seen from the above embodiment, the present application monitors the transportation carriage in real time through a temperature sensor and a humidity sensor to obtain carriage environment data; according to the carriage environment data, through the feedback controller for adjustment and analysis, an analysis result is obtained; based on the analysis result, through the hydraulic controller, the temperature and humidity of the transportation carriage are controlled to obtain a control result. Thus, during the transportation of the refrigerated truck, through the temperature sensor and humidity sensor of the temperature and humidity control system, the transportation carriage is monitored in real time to obtain carriage environment data, and then the carriage environment data is adjusted and analyzed by the feedback controller to obtain an analysis result. Finally, combined with the analysis result, the temperature and humidity of the transportation carriage are controlled by the hydraulic controller to obtain a control result, solving the problem that the refrigerated truck cannot be adjusted according to the actual temperature and humidity changes during transportation, resulting in poor preservation effect, and improving the accuracy of temperature and humidity control for refrigerated transportation.

[0071] It should be noted that the execution subject of this embodiment can be a computing service device with data processing, network communication, and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device, a refrigerated transportation temperature and humidity control device, etc. that can implement the above functions. Hereinafter, taking the refrigerated transportation temperature and humidity control device as an example, this embodiment and the following embodiments will be described.

[0072] Based on this, the embodiment of the present application provides a refrigerated transportation temperature and humidity control method, referring to Figure 1 , Figure 1 is a schematic flowchart of the first embodiment of the refrigerated transportation temperature and humidity control method of the present application.

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

[0074] Step S04, the transportation compartment is monitored in real time through a temperature sensor and a humidity sensor to obtain the compartment environment data;

[0075] It should be clear that the solution of this embodiment aims at the preservation effect of refrigerated transport vehicles. The current temperature and humidity control technologies in the market for refrigerated trucks mainly rely on an efficient compression refrigeration system and an intelligent temperature and humidity monitoring system. The refrigeration system of a refrigerated truck usually includes a compressor, a condenser, and an evaporator, and maintains a low-temperature environment in the compartment through the principle of cyclic refrigeration. The temperature control system uses electronic temperature control technology, monitors the temperature in real time through sensors, and automatically adjusts the operation of the compressor to ensure the stability of the temperature in the compartment. Humidity control is achieved through a humidifier and a dehumidifier to maintain an appropriate humidity level and prevent the goods from being damaged due to excessive dryness or moisture.

[0076] However, in the pipeline design of refrigerated trucks, it is crucial to ensure the stability of temperature and humidity control. Especially when environmental conditions change (such as extremely low temperature or high temperature weather), the traditional motor drive mechanism may cause low-temperature failure.

[0077] Therefore, the solution of this embodiment is applied to a temperature and humidity control system, which further includes a feedback controller, a hydraulic controller, and a transportation carriage in the temperature and humidity system. Among them, the feedback controller is a key component in the automatic control system, which is used to measure the output of the system and compare it with the desired target value (set point) to adjust the input of the system, so as to achieve stable and accurate control of the system. It is widely used in various engineering and industrial systems, such as temperature control, speed regulation, motor control, etc. The hydraulic controller is a device used to control the fluid pressure, flow rate, and direction in the hydraulic system. It realizes 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 multiple fields such as construction machinery, automated production lines, aerospace, and metallurgy. The transportation carriage is a special vehicle carriage used to transport goods (such as food, medicine, chemicals, etc.) that need to be stored in a low-temperature environment. It ensures that the goods maintain a constant low temperature during transportation through the built-in refrigeration system to avoid quality degradation or spoilage caused by temperature fluctuations.

[0078] In this embodiment, first, a temperature sensor and a humidity sensor are used to monitor the transportation carriage in real time to obtain the current environmental data inside the carriage. It should be clear that the environmental data here includes the temperature and humidity information at various positions inside the carriage. In the actual use process, due to different types of vehicle transportation, such as vegetables and fruits, their required refrigeration effects are different. At this time, different areas need to be used for storage. Therefore, it is necessary to monitor the temperature and humidity of different position areas correspondingly to prevent the transported items at various positions in the vehicle from rotting.

[0079] Step S09: According to the carriage environmental data, perform adjustment and analysis through the feedback controller to obtain an analysis result.

[0080] After obtaining the carriage environmental data of the transportation carriage, it is not known whether the current storage environment can ensure the freshness preservation effect of the transported items. Therefore, the feedback controller can be used to perform adjustment and analysis on the obtained data to obtain an analysis result on whether to make adjustments. Among them, the adjustment and analysis in this embodiment are based on the transported items in the transportation carriage, the placement position of the transported items, and the freshness preservation requirements of the transported items.

[0081] Step S10: Based on the analysis result, control the temperature and humidity of the transportation carriage through the hydraulic controller to obtain a control result.

[0082] The analysis results in this embodiment include specific adjustment strategies. During transportation, changes in environmental data may be stored, such as an increase in temperature. At this time, the temperature will increase, but the humidity will decrease. To ensure the freshness preservation effect of the transported items, a hydraulic controller is used in this embodiment to control the temperature and humidity of the transportation compartment, and the control results of the temperature and humidity are obtained.

[0083] Through the above solution in this embodiment, when the environmental data in the transportation compartment changes, specific compartment environmental data is obtained using sensors. Subsequently, a feedback controller is used to analyze whether the current change requires adjustment. Finally, when it is determined that adjustment is required, the temperature and humidity of the transportation compartment are controlled by a hydraulic controller to obtain the control results, solving the problem that when transporting items with freshness preservation requirements, it is impossible to adjust according to the actual environmental change data, and improving the effect of temperature and humidity control in refrigerated transportation.

[0084] Specifically, before the step S04 of obtaining the compartment environmental data by real-time monitoring of the transportation compartment through a temperature sensor and a humidity sensor, the method further includes:

[0085] Step S01, parsing the transportation order to obtain the transported items and freshness preservation requirements;

[0086] Step S02, performing compartment layout according to the transported items and freshness preservation requirements to obtain the layout result;

[0087] Step S03, sending the layout result to the goods transportation end, and the goods transportation end transports the transported items to the transportation compartment for storage according to the layout result.

[0088] During transportation, the placement method of fruits and vegetables seriously affects the fluid distribution in the box. Therefore, when the fruits and vegetables are just put into the refrigerated box, the goods transportation end can select the corresponding placement mode according to the placement method. At the same time, different fruits and vegetables have different optimal refrigeration temperatures and humidities. Therefore, the type of fruits and vegetables to be transported needs to be input before transportation.

[0089] In the refrigerated transportation system of this embodiment, the placement method of fruits and vegetables and the optimal refrigeration conditions of different types of fruits and vegetables play an important role in temperature and humidity control. To ensure precise control of temperature and humidity during transportation, when the fruits and vegetables enter the refrigerated box, the system automatically selects a suitable refrigeration mode according to the input type of fruits and vegetables and the placement method. At this time, the hydraulic transmission system starts to work, and the cold air flow and temperature are precisely controlled through the action of the pressure regulator. In the state without current input, the pressure regulator slowly drops to the lowest point under the combined action of its own gravity and spring elasticity, closing the oil return hole, indicating that the system starts to enter the standby and pressure accumulation stage. At this time, the transportation of the transported items to the transportation compartment is completed.

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

[0091] Step S021, reading the design parameters of the transport carriage to obtain the carriage size and carriage pipelines;

[0092] Step S022, sorting the positions of the goods according to the carriage pipelines and freshness preservation requirements to obtain a sorting result;

[0093] Step S023, performing carriage layout on the transported goods based on the sorting result and the carriage size to obtain a layout result.

[0094] The system also has strong adaptability and flexibility. After determining that a customer's transportation order has been received, in addition to the transported goods and freshness preservation requirements obtained in the above embodiments, this embodiment also reads the design parameters corresponding to the transport carriage selected by the customer to obtain the size of the carriage and the pipeline distribution of the carriage.

[0095] Subsequently, according to the types of different fruits and vegetables and their optimal refrigeration requirements, an appropriate refrigeration mode can be selected according to the type of fruits and vegetables, and 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 optimal conditions.

[0096] In this embodiment, the positions of the goods can be sorted according to the carriage pipelines and freshness preservation requirements to determine which items are closer to the pipelines and which are farther away. Finally, the transported goods are arranged in the carriage based on the obtained sorting result and the carriage size to obtain the layout result of the transported goods in the carriage.

[0097] It should be clear that the way fruits and vegetables are placed in the refrigeration box will directly affect the efficiency and uniformity of cold air flow. Since fruits and vegetables of different shapes and sizes occupy different spaces, their placement positions will generate different resistances to air flow, thereby affecting the distribution of cold air in the box. To optimize this process, corresponding placement modes can be selected according to the size and shape of the fruits and vegetables, and each placement mode has been optimized to ensure that the cold air can be evenly distributed to every part, reducing the phenomenon of local overcooling or overheating.

[0098] Furthermore, before the above step S09, the step of performing adjustment and analysis through the feedback controller according to the carriage environment data to obtain an analysis result, the method further includes:

[0099] Step S05, measuring the transport carriage to obtain the relative humidity of the transport carriage;

[0100] Step S06: According to the preset decoupling coefficient, perform decoupling analysis on the output value of the feedback controller through the measured 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: Perform optimization calculation on the decoupling coefficient, the output value of the temperature controller, and the output value of the humidity controller through the genetic algorithm to obtain the optimized parameters.

[0102] Step S08: Optimize the feedback controller with the optimized parameters to obtain the optimized result of the controller.

[0103] In this embodiment, in addition to using the ice box as the energy storage cold transport box body, the precise control of temperature and humidity is also crucial. Especially when ensuring the safety and quality of fruits and vegetables during transportation, temperature and humidity control are the key factors for fruit and vegetable storage. However, the traditional temperature and humidity monitoring and control methods (such as PID regulation) have certain limitations when facing complex processes such as non-linearity, time-variation, coupling, and parameter and structure 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] In the cold transport box body, temperature and humidity sensors will continuously monitor the environmental data in the carriage and feed these data back to the control system. Through the improved genetic algorithm PID control method, the system can dynamically adjust the usage status (on, off) of the ice box and regulate the equipped humidifier or dehumidifier to ensure that the temperature and humidity in the carriage are always maintained within the optimal range. Through this method, the storage conditions of fruits and vegetables are more precisely controlled, and the freshness and shelf life of the goods are extended.

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

[0106]

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

[0108] where KP is the proportional, TI is the integral, and TD is the derivative control parameter, as Figure 2As shown in the figure, it is a schematic diagram of the temperature and humidity PID control of a refrigerated truck in this embodiment. Y1d(t) is the temperature moderate value, Y1(t) is the actual value of the refrigerated truck temperature, e1(t) is the control deviation between the temperature value and the actual value, Y2d(t) is the humidity moderate value, Y2(t) is the actual value of the refrigerated truck humidity, e2(t) is the control deviation between the humidity value and the actual value. If the humidity is too high, the metabolism accelerates, the fruits and vegetables ferment, and the local temperature rises, resulting in mildew and rot. If the temperature is too high, the fermentation process is accelerated. They are interrelated and interact with each other, having strong coupling.

[0109] In order to make the final fresh-keeping effect of the transported items better, this embodiment adopts a predictive decoupling method. According to the enthalpy dynamic balance theory, under the equilibrium state, assuming that the moisture in the air remains unchanged, the influence of the relative humidity on the change of temperature t is as follows:

[0110]

[0111] Among them, RH1 is the actually measured relative humidity, RH2 is the relative humidity participating 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] In order to decouple the influence of temperature and humidity on the fresh-keeping effect, this embodiment uses a decoupling coefficient for decoupling, and the formula is as follows

[0113] u H (t) = H1α2 + T1(1 - α1)

[0114] u T (t) = T1α1 + H1(1 - α2)

[0115] As shown:

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

[0117] Finally, in order to ensure that the parameters are continuously optimized during subsequent use, as shown in this embodiment Figure 3 As shown, the niche technology is used to improve the genetic algorithm, optimize the PID parameters, and use PID to control the temperature and humidity of the refrigerated truck to achieve the adjustment of the temperature and humidity of the refrigerated truck.

[0118] First, the genetic algorithm evaluates individuals through the fitness function value, selects individuals, conducts optimization, and optimizes the PID control parameters KP, TI, TD of the refrigerated box temperature and humidity, the decoupling coefficients α1 and α2. The speed of system control can be seen from the rise time, and the objective function is determined as:

[0119] When e(t)≥0

[0120]

[0121] When e(t)<0

[0122]

[0123] Where ω1, ω2, ω3, 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] In order to further improve the cold storage quality of fruits and vegetables, when controlling the humidity and temperature of the cold storage box body, this embodiment introduces an improved genetic algorithm PID control method. The genetic algorithm optimizes the early phenomenon and random walk problems in the traditional PID control method, enabling the PID controller to adjust the temperature and humidity more accurately. This control method is based on real-time data feedback and dynamically adjusts the output temperature and humidity of the cold air to ensure that the fruits and vegetables are always in the best storage environment.

[0125] When the system automatically recognizes that the temperature of the fruit and vegetable storage environment is relatively high, the temperature and humidity control system will quickly respond through optimized PID regulation, adjust the cold air flow rate, and control the shutter opening through the hydraulic system to achieve the optimal output of the cold air flow rate, ensuring that the cold air is quickly and evenly distributed in the box body. At the same time, the system can also monitor the storage humidity of the fruits and vegetables in real time and automatically adjust the humidity control parameters to avoid the situation of the fruits and vegetables rotting or drying out due to too high or too low humidity.

[0126] Through the above solution, the decoupling and optimization of the PID control parameters are achieved, and the feedback controller as shown in Figure 4 can be obtained, which can solve the technical problem of poor adjustment effect, ensure stable temperature and humidity control in various different environments, adapt to different external conditions and transportation durations, and enhance the flexibility and reliability of the system.

[0127] In this embodiment, through the above solution, specifically, the temperature sensor and the humidity sensor are used to monitor the transportation carriage in real time to obtain the carriage environment data; according to the carriage environment data, the feedback controller is used for adjustment and analysis to obtain an analysis result; based on the analysis result, the hydraulic controller is used to control the temperature and humidity of the transportation carriage to obtain a control result. Thus, during the transportation of the refrigerated truck, the temperature sensor and the humidity sensor of the temperature and humidity control system are used to monitor the transportation carriage in real time to obtain the carriage environment data, and then the feedback controller is used to adjust and analyze the carriage environment data to obtain an analysis result. Finally, combined with the analysis result, the hydraulic controller is used to control the temperature and humidity of the transportation carriage to obtain a control result, which solves the problem that the refrigerated truck cannot be adjusted according to the actual temperature and humidity changes during transportation, resulting in poor preservation effect, and improves the accuracy of temperature and humidity control in refrigerated transportation.

[0128] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar content as in the above-mentioned embodiment one can be referred to the above introduction and will not be repeated hereinafter. On this basis, please refer to Figure 5 , step S09, in the step of adjusting and analyzing the carriage environment data through the feedback controller to obtain an analysis result, the refrigerated transportation temperature and humidity control method further includes steps S091 to S093:

[0129] Step S091, parsing the carriage environment data to obtain the actual carriage temperature value and the actual carriage humidity value;

[0130] Step S092, performing difference calculation based on the actual carriage temperature value, the actual carriage humidity value, and the layout result to obtain a control deviation value;

[0131] Step S093, based on the control deviation value, performing adjustment and analysis through the feedback controller to obtain an analysis result.

[0132] During transportation, the temperature and humidity control system continuously monitors the temperature and humidity data in the carriage. When the temperature or humidity changes exceed the set range, the system calculates the difference between the acquired data and the layout structure obtained in the above embodiment to obtain the control deviation value between the current carriage temperature and humidity and the moderate value. Subsequently, based on the obtained control deviation value, the opening size of the refrigerated box pipeline is adjusted through the hydraulic transmission mechanism;

[0133] The temperature and humidity control system of this embodiment is as Figure 6As shown, it includes an ice box storage compartment 1, an air outlet 2, a humidifying pipe 3, an oil inlet pipe 4, an oil return pipe 5, a water pump 6, a water storage tank 7, an oil pump 8, an oil storage tank 9, an oil inlet pipe 10, and an oil return pipe 11. Among them, the ice box storage compartment refers to the transport carriage in this embodiment, which serves as a carrier for transporting items. The oil inlet pipe and the oil return pipe are used to adjust the pressure of the hydraulic system. The water pump and the oil pump are used to store the hydraulic oil and moisture used. If the cold air flow needs to be increased, the hydraulic system will increase the pressure, increase the flow rate of the oil inlet pipe, and drive the rack and pinion mechanism to make the opening of the duct larger. If the cold air flow needs to be reduced, the pressure will be reduced, and the opening of the duct will be reduced, so as to adjust the speed of air flow and the accuracy of temperature and humidity control.

[0134] By using the rack and pinion mechanism in the hydraulic transmission system, a stable and efficient solution is provided. Especially in a low-temperature environment, it can avoid the limitations of motor drive and ensure the reliable operation of the system under different weather conditions. In this embodiment, the cold air flow and distribution are precisely adjusted through the oil pump, water pump, and water storage tank, improving the accuracy of temperature and humidity control and providing more efficient and stable technical support for refrigerated transportation.

[0135] Specifically, in the above step S092, the step of calculating the control deviation value by calculating the difference according to the actual value of the carriage temperature, the actual value of the carriage humidity, and the layout result includes:

[0136] Step S0921, analyzing the layout result to obtain the temperature moderate value and the humidity moderate value;

[0137] Step S0922, calculating the difference between the actual value of the carriage temperature and the temperature moderate value to obtain the temperature control deviation value;

[0138] Step S0923, calculating the difference between the actual value of the carriage humidity and the humidity moderate value to obtain the humidity control deviation value;

[0139] Step S0924, summarizing and analyzing the layout result, the temperature control deviation, and the humidity control deviation value to obtain the control deviation value.

[0140] It should be clear that humidity plays an important role in the refrigeration and cooling processes. The temperature in the refrigerated box takes away heat through air flow, and the evaporation heat of the moisture in the cold air helps to reduce the temperature in the box. In a high-humidity environment, the moisture in the air has a higher heat exchange capacity, which can help maintain the fluidity and stability of the cold air while reducing the temperature. Therefore, when the humidity is appropriate, it helps the temperature to be evenly distributed, thereby improving the cooling efficiency.

[0141] However, excessively high humidity may also bring certain negative impacts. Excessively high humidity can lead to air saturation, reduce the heat conduction ability of the air, cause poor cold air flow, and thus affect the cooling speed. In some extreme cases, excessively high humidity may also cause frost or icing phenomena, affecting the normal operation of the refrigeration system. Therefore, reasonable control of the humidity level is crucial for the efficiency of the cooling process.

[0142] The harm of excessively low humidity to fruits and vegetables is particularly significant. Fruits and vegetables will continue to carry out respiration during storage, consuming the water in their bodies. If the environmental humidity is too low, the water on the surface of fruits and vegetables will evaporate rapidly, resulting in water loss of fruits and vegetables. This water loss will not only make the surface of fruits and vegetables dry, shrunken, and even cracked, but also affect the taste and appearance of fruits and vegetables. For example, fruits and vegetables such as leafy vegetables and strawberries have higher humidity requirements. Excessively low humidity will cause them to dry out and rot quickly, reducing their market value.

[0143] In addition, excessively low humidity will also cause cracks and fissures on the surface of fruits and vegetables, providing an entryway for microorganisms such as bacteria and molds, thus accelerating the decay process. For some perishable fruits and vegetables, such as apples, grapes, and citrus fruits, excessively low humidity will significantly shorten their shelf life and affect their storage effect.

[0144] Excessively low humidity not only affects the quality of fruits and vegetables but also has an adverse impact on the refrigeration equipment itself. When the humidity is too low, there is less moisture in the air, and the cold air flow is uneven, which may lead to uneven distribution of cold air in the box, reducing the cooling efficiency. In addition, excessively low humidity may also cause condensation problems inside the refrigeration equipment, resulting in ice accumulation, and even causing equipment blockage or failure, thus affecting the normal operation of the entire refrigeration system.

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

[0146] In this refrigerated transportation system, since the gas in the box is in a continuous flow state, it is crucial to ensure that the fruits and vegetables are always under appropriate temperature and humidity conditions. For this purpose, in this embodiment, the temperature moderate value and the humidity moderate value are obtained by analyzing the layout result, and then the control deviation value to the current transportation carriage is determined through the temperature moderate value and the humidity moderate value. At this time, as Figure 7For the shown fan motor, the blower 12 does not stop working. It continuously conveys the cold air in the cold storage chamber to the refrigerated box body. However, the cold air usually contains a large amount of moisture. Therefore, when the temperature reaches the optimal refrigeration condition, the humidity in the box body will also increase accordingly. In this embodiment, by precisely controlling the flow rate and distribution of the cold air through the air return port 13, it can ensure that the cold air evenly covers the entire refrigerated box body, avoiding overcooling or overheating in some areas, thereby improving the refrigeration efficiency.

[0147] More specifically, the control results include temperature control results and humidity control results. The above step S10, based on the analysis results, controls the temperature and humidity of the transportation carriage through the hydraulic controller. The steps for obtaining the control results include:

[0148] Step S101, determining the carriage temperature adjustment value and the carriage humidity adjustment value based on the analysis results;

[0149] Step S102, adjusting the opening degree of the shutter through the hydraulic controller according to the carriage temperature adjustment value to obtain the temperature control result;

[0150] Step S103, controlling the dehumidifier and the humidifier to adjust according to the carriage humidity adjustment value to obtain the humidity control result.

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

[0152] As Figure 9 shown, when adjustment is required, the hydraulic oil is adjusted through the oil inlet chamber 27 and the oil return chamber 28. As the pressure of the hydraulic oil gradually increases, the hydraulic oil starts to push the spring 29, causing the rotation of the rack 30. And the cylindrical rack 31 connected to the rack will move forward, thereby resulting in the adjustment of the shutter 32. Among them, the movement of the rack is the core of the entire transmission process. The precise rack drive enables the system to achieve linear and stable operation. While the rack is pushed forward, it will drive the rotation of the cylindrical gear meshing with it. The rotation of the cylindrical gear further amplifies the power through the action of the coaxial gear, driving all parts of the mechanical structure to work together, and finally realizing the axial movement of the shutter. Among them, the working principle of the gear-rack mechanism is asFigure 10 As shown in the figure, the rack and pinion mechanism consists of a linear rack 32 and an engaged cylindrical gear 33. The hydraulic system controls the pressure of the hydraulic oil through the oil inlet chamber 34, the oil return chamber 35, the spring 36, and the spring 37 to drive the gear to rotate, further pushing the rack 38 to move in a straight line direction, thereby adjusting the opening size of the refrigerated chamber pipeline corresponding to the gear 39. By adjusting the opening and closing degree of the orifice, the hydraulic transmission system can precisely control the cold air flow rate and distribution, ensuring the precise adjustment of temperature and humidity. In addition, the rack and pinion structure has good transmission efficiency, high precision, and can provide stable torque output, which enables the system to maintain efficient operation under different environmental conditions, especially in low-temperature situations, without being affected by the performance attenuation of the motor. In a low-temperature environment, the hydraulic oil of the hydraulic system has good low-temperature adaptability, unlike the electric system that may have difficulty starting the motor or a decrease in sensitivity due to low temperature. The hydraulic oil can still maintain fluidity at low temperature, thus ensuring that the rack and pinion mechanism can stably adjust the orifice opening in the refrigerated cabinet, guaranteeing the uniform distribution of cold air and the normal operation of the control system.

[0153] The movement of the shutter is a key link in temperature regulation. In this embodiment, Figure 11 As shown in the figure, through the straight-tooth movement mechanism, the oil volume is adjusted in the oil inlet pipe 40 or the oil return pipe 41, thereby changing the opening degree of the shutter. Among them, the opening degree of the shutter 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 the fruits and vegetables is high, the hydraulic transmission system will drive the shutter to increase the opening degree, ensuring that the air outlet of the cold air delivery pipeline is fully opened, thereby increasing the cold air flow rate and minimizing the temperature of the fruits and vegetables to ensure the refrigeration effect.

[0154] This embodiment adopts hydraulic transmission instead of traditional electric drive because the hydraulic system shows higher reliability in low-temperature environments. Traditional electric drives may experience failures or slow responses in low-temperature environments, but the hydraulic transmission system relies on pressure changes rather than current, so it can operate stably in extremely cold environments. The pressure regulator, through the coordinated action of gravity and springs, ensures that even in the case of insufficient power, the system can still freely adjust the cold air flow rate and the shutter opening degree.

[0155] This refrigerated transportation system reduces the dependence on external power through the efficient utilization of hydraulic oil, and is especially suitable for long-term and high-frequency transportation tasks. Since the hydraulic system is not affected by external power fluctuations, it can operate stably and maintain high performance. At the same time, the intelligent PID control system dynamically adjusts the system parameters according to the 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 box body through the cold air pipeline, gradually reducing the temperature inside the box. This process is achieved through the precisely controlled layout of the fan and the cold air pipeline, ensuring that the cold air can be evenly distributed throughout the box body to avoid local overcooling or overheating. Temperature and humidity sensors inside the refrigerated box body continuously monitor the changes in the internal environment. Once the humidity and temperature inside the box reach the preset optimal refrigeration conditions, the system will immediately provide feedback for adjustment.

[0157] When the temperature and humidity reach the optimal values, the system calculates the most suitable current according to the types and placement methods of the transported fruits and vegetables and delivers it to the pressure regulator. Each type of fruit and vegetable has different temperature and humidity requirements during transportation. Especially during the refrigeration process, the heat generated by aerobic respiration and the changes in the ambient temperature will affect the storage conditions of the fruits and vegetables. To cope with these changes, the system precisely adjusts the cold air delivery volume and air volume of the refrigerated box body according to the type of fruits and vegetables and the temperature and humidity conditions inside the box.

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

[0159] In the above process, the key point lies in the precise adjustment of the shutter opening degree. When the temperature and humidity inside the refrigerated box body have reached the set values, the opening degree of the shutter is precisely controlled through hydraulic transmission, exactly meeting the heat demand generated by the aerobic respiration of the 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 also continuously monitors the temperature changes in the external environment and adjusts the cold air delivery volume as needed to ensure that the fruits and vegetables are always in suitable temperature and humidity conditions, thereby maximizing their shelf life.

[0160] To improve the uniformity of the cooling effect of the refrigerated truck, this embodiment also optimizes the design of the cooling pipeline air outlet and the shutter. The specific scheme is based on the principle of fluid mechanics. According to the basic knowledge of fluid mechanics, in a duct, the smaller the opening diameter, the faster the air flow velocity. At the same time, since the cooling air flow transfers in the pipeline, the air flow temperature at the air outlet of the pipeline farther from the cold storage chamber is higher, while the air flow temperature at the air outlet closer to the cold storage chamber is lower. This is because heat exchange occurs during the transmission of the cold air in the pipeline, resulting in the increase of the air flow temperature with the increase of the distance.

[0161] To solve this problem, in this embodiment, an increasingly larger opening diameter is adopted in the design of the cooling pipeline. Specifically, the opening diameter of the air outlet of the cooling pipeline farthest from the cold storage chamber is the largest, which can ensure that the cold air can smoothly flow out at a relatively high speed and relatively high temperature, thereby shortening the lag time of temperature change. On the contrary, the opening diameter of the air outlet close to the cold storage chamber is smaller, which helps to control the air flow speed and ensure an appropriate cold air flow rate.

[0162] To further improve the cooling effect and avoid the cold air directly blowing on fruits and vegetables, resulting in frostbite, in this embodiment, a filter screen is also installed at the air outlet. The filter screen design can effectively disperse the cold air flow, enabling the cold air to evenly enter the refrigerated box body, preventing the local cold air from directly hitting the surface of the fruits and vegetables, reducing the excessive cooling of the cold air on the fruits and vegetables. Through this series of designs, the temperature and humidity conditions in the refrigerated truck are more evenly distributed, thereby ensuring the quality and freshness of the fruits and vegetables during transportation.

[0163] The optimized air flow reduces unnecessary energy waste, enabling the cold air in the cold storage box to be more efficiently transferred to each area, reducing the burden on the refrigeration system and saving energy.

[0164] Further, after the step S103 of controlling the dehumidifier and the humidifier to make adjustments according to the humidity adjustment value of the carriage through the hydraulic controller to obtain the humidity control result, the method further includes:

[0165] Step S104, detecting the moisture content of the dehumidifier;

[0166] Step S105, when it is detected that the adsorbed moisture of the dehumidifier exceeds the storage threshold, extracting the moisture through a water pump and storing the extracted moisture in a water storage device;

[0167] Step S106, when the hydraulic controller controls the humidifier to make adjustments, transporting the moisture in the water storage device to the humidifier.

[0168] To keep the fruits and vegetables in a suitable humidity environment during transportation, as shown in this embodiment Figure 12 also, a gas dehumidifier and a humidifier are additionally installed at the air return port. The humidity sensor continuously monitors the humidity in the refrigerated box body. When the humidity reaches the set optimal level, the humidifying pipe 42 automatically closes to avoid excessive moisture accumulation. At the same time, the system adsorbs the excessive moisture through the dehumidifying pipe 43, and the moisture flowing through the gas is absorbed by the dehumidifying pipe and introduced into the drain pipe.

[0169] When the moisture adsorbed by the dehumidifier reaches a certain amount, the water pump 44 will start to store the excess moisture in the water storage tank 45. This stored moisture 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 refrigerated box is always maintained within the optimal range, effectively avoiding over-wet or over-dry situations and ensuring the long-term freshness preservation and transportation efficiency of fruits and vegetables;

[0170] Similarly, in order to make reasonable use of the hydraulic oil, in this embodiment, after the return oil pipe 46 recovers the hydraulic oil, the hydraulic oil is recovered and stored in the oil storage tank 48 through the return oil branch pipe 47. When hydraulic oil is needed for pressurization, the oil pump 49 extracts the hydraulic oil from the oil storage tank and transmits the hydraulic pipe to the inlet pipe 51 through the inlet oil branch pipe 50, realizing the reasonable use of the hydraulic oil.

[0171] Through the above scheme in this embodiment, specifically, the actual value of the carriage temperature and the actual value of the carriage humidity are obtained by analyzing the carriage environment data; the control deviation value is obtained by performing difference calculation based on the actual value of the carriage temperature, the actual value of the carriage humidity, and the layout result; based on the control deviation value, adjustment analysis is performed through the feedback controller to obtain the analysis result. Thus, during the transportation of the refrigerated truck, the carriage environment data is obtained by real-time monitoring of the transportation carriage through the temperature sensor and humidity sensor of the temperature and humidity control system. Subsequently, the carriage environment data is adjusted and analyzed through the feedback controller to obtain the analysis result. Finally, combined with the analysis result, the temperature and humidity of the transportation carriage are controlled through the hydraulic controller to obtain the control result, solving the problem that the refrigerated truck cannot be adjusted according to the actual temperature and humidity changes during transportation, resulting in poor freshness preservation effect, and improving 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 temperature and humidity control method for refrigerated transportation of this application. Based on this technical concept, more forms of simple transformations 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 Figure 13 , the temperature and humidity control device for refrigerated transportation is applied to the temperature and humidity control system. The temperature and humidity control system includes a feedback controller, a hydraulic controller, and a transportation carriage, and includes:

[0174] A monitoring module 10, configured to obtain carriage environment data by real-time monitoring of the transportation carriage through a temperature sensor and a humidity sensor;

[0175] An analysis module 20, configured to perform adjustment analysis through the feedback controller according to the carriage environment data to obtain an analysis result;

[0176] The control module 30 is configured to control the temperature and humidity of the transport carriage through the hydraulic controller based on the analysis result, and obtain a control result.

[0177] The refrigerated transport temperature and humidity control device provided by the present application adopts the refrigerated transport temperature and humidity control method in the above embodiment, and can solve the technical problem that the fresh-keeping effect is not good due to the inability to adjust according to the actual temperature and humidity changes during the transportation of refrigerated trucks. Compared with the prior art, the beneficial effects of the refrigerated transport temperature and humidity control device provided by the present application are the same as those of the refrigerated transport temperature and humidity control method provided by the above embodiment, and other technical features in the refrigerated transport temperature and humidity control device are the same as those disclosed in the above embodiment method, which will not be elaborated here.

[0178] The present 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 execute the refrigerated transport temperature and humidity control method in the first embodiment above.

[0179] Next, refer to Figure 14 , which shows a schematic structural diagram of a refrigerated transport temperature and humidity control device suitable for implementing the embodiments of the present application. The refrigerated transport temperature and humidity control device in the embodiments of the present application may include, but are not limited to, mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 14 The refrigerated transport temperature and humidity control device shown is only an example, and should not impose any limitation on the functions and usage scope of the embodiments of the present application.

[0180] As Figure 14As shown, the temperature and humidity control device for refrigerated transportation may include a processing device 1001 (such as a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM: Read Only Memory) 1002 or the program loaded from the storage device 1003 into the random access memory (RAM: Random Access Memory) 1004. In the RAM 1004, various programs and data required for the operation of the temperature and humidity control device for refrigerated transportation are also stored. The processing device 1001, the ROM 1002, and the RAM 1004 are connected to each other through a bus 1005. The input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems may be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 can allow the temperature and humidity control device for refrigerated transportation to communicate with other devices wirelessly or wiredly to exchange data. Although the figure shows a temperature and humidity control device for refrigerated transportation having various systems, it should be understood that it is not required to implement or have all the shown systems. More or fewer systems may be implemented or had alternatively.

[0181] In particular, according to the embodiments disclosed in the present application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device, or installed from the storage device 1003, or installed from the ROM 1002. When the computer program is executed by the processing device 1001, the above functions defined in the methods of the embodiments disclosed in the present application are executed.

[0182] The temperature and humidity control device for refrigerated transportation provided by the present application adopts the temperature and humidity control method in the above embodiments, and can solve the technical problem that the refrigerated truck cannot be adjusted according to the actual temperature and humidity changes during transportation, resulting in poor preservation effect. Compared with the prior art, the beneficial effects of the temperature and humidity control device for refrigerated transportation provided by the present application are the same as those of the temperature and humidity control method provided by the above embodiments, and other technical features in the temperature and humidity control device are the same as those disclosed in the method of the previous embodiment, and will not be elaborated here.

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

[0184] As described above, the above are only specific embodiments of this application, but the protection scope of this application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in this application, and all of them should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

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

[0186] The computer-readable storage medium provided by this application can be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination of the above. More specific examples of computer-readable storage media can include, but are not limited to: electrical connections with 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 fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above. In this embodiment, the computer-readable storage medium can be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, device, or device. The program code contained on the computer-readable storage medium can be transmitted by any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0187] The above computer-readable storage medium can be included in the refrigerated transportation temperature and humidity control device; it can also exist separately without being assembled into the refrigerated transportation temperature and humidity control device.

[0188] The above computer-readable storage medium carries one or more programs, which, when executed by the refrigerated transportation temperature and humidity control device, cause the refrigerated transportation temperature and humidity control device to: monitor the transportation carriage in real time through a temperature sensor and a humidity sensor to obtain carriage environment data; perform adjustment and analysis through the feedback controller according to the carriage environment data to obtain an analysis result; and control the temperature and humidity of the transportation carriage through the hydraulic controller based on the analysis result to obtain a control result.

[0189] Computer program code for performing the operations of the present application may be written in one or more programming languages or combinations thereof. The programming languages include object-oriented programming languages such as Java, Smalltalk, and C++, and also include conventional procedural programming languages such as the "C" language or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (for example, by connecting through an Internet service provider using the Internet).

[0190] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code that contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the block may occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks shown may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, may be implemented by a dedicated hardware-based system for performing the specified functions or operations, or may be implemented by a combination of dedicated hardware and computer instructions.

[0191] The modules described in the embodiments of the present application may be implemented in software or in hardware. Among them, the name of the module does not constitute a limitation to the unit itself in some cases.

[0192] The readable storage medium provided by this application is a computer-readable storage medium. The computer-readable storage medium stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned refrigerated transportation temperature and humidity control method, which can solve the technical problem that the refrigerated truck cannot be adjusted according to the actual temperature and humidity changes during transportation, resulting in poor fresh-keeping effect. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by this application are the same as those of the refrigerated transportation temperature and humidity control method provided by the above embodiment, and will not be elaborated here.

[0193] This application also provides a computer program product, including a computer program, and when the computer program is executed by a processor, it realizes the steps of the refrigerated transportation temperature and humidity control method as described above.

[0194] The computer program product provided by this application can solve the technical problem that the refrigerated truck cannot be adjusted according to the actual temperature and humidity changes during transportation, resulting in poor fresh-keeping effect. Compared with the prior art, the beneficial effects of the computer program product provided by this application are the same as those of the refrigerated transportation temperature and humidity control method provided by the above embodiment, and will not be elaborated here.

[0195] The above are only some embodiments of this application, and do not limit the patent scope of this application. All equivalent structural transformations made under the technical concept of this application by using the content 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 in 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 carriage. The method includes: Real-time monitoring of the transport carriage through a temperature sensor and a humidity sensor to obtain carriage environment data; According to the carriage environment data, performing adjustment and analysis through the feedback controller to obtain an analysis result; Based on the analysis result, controlling the temperature and humidity of the transport carriage through the hydraulic controller to obtain a control result.

2. The method according to claim 1, characterized in that, Before the step of real-time monitoring of the transport carriage through a temperature sensor and a humidity sensor to obtain carriage environment data, the method further includes: Parsing a transport order to obtain transport items and preservation requirements; Performing carriage layout according to the transport items and preservation requirements to obtain a layout result; Sending the layout result to the goods transport end, and the goods transport end transports the transport items to the transport carriage for storage according to the layout result.

3. The method according to claim 2, wherein The step of performing carriage layout according to the transport items and preservation requirements to obtain a layout result includes: Reading the design parameters of the transport carriage to obtain the carriage size and carriage pipelines; Sorting the goods positions according to the carriage pipelines and preservation requirements to obtain a sorting result; Based on the sorting result and the carriage size, performing carriage layout on the transport items to obtain a layout result.

4. The method according to claim 1, characterized in that, Before the step of performing adjustment and analysis through the feedback controller according to the carriage environment data to obtain an analysis result, the method further includes: Measuring the transport carriage to obtain the relative humidity of the transport carriage; According to a preset decoupling coefficient, performing decoupling analysis on the output value of the feedback controller through the measured temperature and the relative humidity to obtain a temperature controller output value and a humidity controller output value; Performing optimization calculation on the decoupling coefficient, the temperature controller output value, and the humidity controller output value through a genetic algorithm to obtain optimized parameters; Optimizing the feedback controller through the optimized parameters to obtain a controller optimization result.

5. The method according to claim 2, wherein The step of performing adjustment and analysis through the feedback controller according to the carriage environment data to obtain an analysis result includes: Parsing the carriage environment data to obtain the actual carriage temperature value and the actual carriage humidity value; Performing difference calculation according to the actual carriage temperature value, the actual carriage humidity value, and the layout result to obtain a control deviation value; Based on the control deviation value, performing adjustment and analysis through the feedback controller to obtain an analysis result.

6. The method according to claim 5, wherein The step of performing difference calculation according to the actual carriage temperature value, the actual carriage humidity value, and the layout result to obtain a control deviation value includes: Analyzing the layout result to obtain a temperature moderate value and a humidity moderate value; Performing difference calculation on the actual carriage temperature value through the temperature moderate value to obtain a temperature control deviation value; Performing difference calculation on the actual carriage humidity value through the humidity moderate value to obtain a humidity control deviation value; Performing summary analysis on the layout result, the temperature control deviation, and the humidity control deviation value to obtain a control deviation value.

7. The method according to claim 4, characterized in that, The control results include temperature control results and humidity control results. The step of controlling the temperature and humidity of the transportation carriage through the hydraulic controller based on the analysis results includes: Determining a carriage temperature adjustment value and a carriage humidity adjustment value based on the analysis results; Adjusting the opening degree of the shutter through the hydraulic controller according to the carriage temperature adjustment value to obtain a temperature control result; Controlling the dehumidifier and the humidifier to make adjustments through the hydraulic controller according to the carriage humidity adjustment value to obtain a humidity control result.

8. The method according to claim 7, characterized in that, After the step of controlling the dehumidifier and the humidifier to make adjustments through the hydraulic controller according to the carriage humidity adjustment value to obtain a humidity control result, the method further includes: Detecting the moisture of the dehumidifier; When it is detected that the adsorbed moisture of the dehumidifier exceeds the storage threshold, pumping the moisture through a water pump and storing the pumped moisture in a water storage device; When the hydraulic controller controls the humidifier to make adjustments, transporting the moisture in the water storage device to the humidifier.

9. A refrigerated transportation temperature and humidity control device, characterized in that, The device is applied to a temperature and humidity control system, and the temperature and humidity control system includes a feedback controller, a hydraulic controller, and a transportation carriage, and includes: A monitoring module for obtaining carriage environment data by real-time monitoring of the transportation carriage through a temperature sensor and a humidity sensor; An analysis module for performing adjustment analysis through the feedback controller according to the carriage environment data to obtain an analysis result; A control module for controlling the temperature and humidity of the transportation carriage through the hydraulic controller based on the analysis result to obtain a control result.

10. 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, the steps of the refrigerated transportation temperature and humidity control method according to any one of claims 1 to 8 are implemented.

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