Mutton cold chain transportation control system and method

Abstract

The invention discloses a mutton cold-chain transportation control system and method, relates to the technical field of cold-chain management, and aims to realize whole-course automation of a mutton cold-chain distribution process and guarantee the mutton quality. Comprising the steps that a cold chain transportation task is received, and the cold chain transportation task comprises a driving route and loading food expected to be loaded at a loading and unloading station on the driving route; the number of the loading and unloading stations is one or more; under the condition that mutton exists in the loaded food of any loading and unloading station, searching a second station corresponding to related food with mutton in the loaded food; determining a target refrigeration cabin for storing mutton according to the sequence precedence relation of the first station and the second station in the driving route; the first station is a station for loading mutton serving as food; when the vehicle runs into a specific range, an air conditioner control instruction is sent to an air conditioner host, and the air conditioner control instruction comprises the position of a target refrigeration cabin; the particular range is based on an area selected by the first station.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cold chain management, and particularly relates to a mutton cold chain transportation control system and method. BACKGROUND

[0002] City intelligent cold chain distribution refers to the distribution of temperature-sensitive commodities such as fresh food and medicine in the city range through professional refrigerated vehicles, temperature control equipment and information management system. According to the planned path, the commodities are transported from the warehouse center to the retail terminal or consumer, and are stopped at the pre-set site, docked with the intelligent robot, unloaded and loaded at the site.

[0003] Mutton is a high-protein perishable food, which faces multiple challenges in cold chain transportation. Mutton is easy to absorb environmental odors such as seafood and chemicals, and its fishy smell is easy to be absorbed by other foods. Specific microorganisms such as Pseudomonas and Thermocidin can breed on the surface of mutton and accelerate breeding when the temperature fluctuates. Therefore, the storage position of mutton in the cold chain transportation vehicle is particularly important.

[0004] In the process of city intelligent cold chain distribution, the automatic loading generally arranges the commodities in a certain order for three-dimensional stacking. Due to the particularity of mutton, if the storage position is improper, for example, close to seafood and other foods with strong smell, the mutton will absorb the smell of other foods and deteriorate. At the same time, other foods with high storage quality will also be affected by the mutton, and the deteriorated food will cause certain loss to the retail terminal or consumer. If the mutton is to be stored in the proper position, manual intervention is required to confirm the loading of the food and adjust the storage position, which causes low efficiency of cold chain distribution. SUMMARY

[0005] Therefore, the present application provides a mutton cold chain transportation control system and method to realize the full automation of the mutton cold chain distribution process and ensure the quality of mutton.

[0006] The first aspect of the present application provides a mutton cold chain transportation control method applied to a vehicle terminal of a mutton cold chain transportation control system, the mutton cold chain transportation control system comprising a vehicle terminal, a refrigerated cabin and an air conditioner host, and the method comprising: receiving a cold chain transportation task, the cold chain transportation task comprising a driving route and loading food expected to be loaded at loading and unloading stations on the driving route; the loading and unloading stations being one or more; in the case that the loading food at any loading and unloading station contains mutton, finding a second station corresponding to the associated food with mutton in the loading food; determining a target refrigerated cabin for storing mutton according to the order of the first station and the second station on the driving route; the first station being the station where the loading food is mutton; When the vehicle travels into a specific range, an air conditioning control instruction is sent to an air conditioning host, and the air conditioning control instruction includes a position of a target refrigeration compartment; the specific range is based on a region selected by the first station.

[0007] In a possible implementation manner of the first aspect, the mutton cold-chain transportation control system further includes a conveying device, and the target refrigeration compartment for storing the mutton is determined according to the order of the first station and the second station on the travel route, and the method further includes: When the vehicle travels to the second station first and then travels to the first station, the target refrigeration compartment is selected before the refrigeration compartment for storing the associated food; the front-rear relationship of the refrigeration compartments is related to an entrance of the conveying device into which the food storage device is fed; When the vehicle travels to the first station first and then travels to the second station, the target refrigeration compartment is selected after the refrigeration compartment for storing the associated food.

[0008] In a possible implementation manner of the first aspect, the method further includes: When the vehicle arrives at the first station, the refrigeration compartment for storing the mutton is identified by scanning the identified two-dimensional code information, and a control signal is sent to the conveying device, the control signal including a start instruction of the conveying device, a specified running time, and a stop instruction of the conveying device, wherein the specified running time is calculated according to the position of the target refrigeration compartment and the speed of the conveying device; The door machine of the target refrigeration compartment is sent an open-door instruction after waiting for the specified running time.

[0009] In a possible implementation manner of the first aspect, the mutton cold-chain transportation control further includes a gas sensor, and after the target refrigeration compartment for storing the mutton is determined according to the order of the first station and the second station on the travel route, the method further includes: Gas data uploaded on the gas sensor arranged on the target refrigeration compartment is acquired, the concentration and the volume of the refrigeration compartment are calculated according to the gas data, and the amount of gas to be discharged is calculated; The target exhaust time of the original gas in the target refrigeration compartment after the input of the inert gas is calculated according to the amount of gas to be discharged; The starting point of the specific range is calculated according to the target exhaust time; When the vehicle travels to the starting point of the specific range, an air conditioning control instruction is sent to an air conditioning host, and the air conditioning control instruction includes the position of the target refrigeration compartment.

[0010] In a possible implementation manner of the first aspect, the mutton cold-chain transportation control system further includes a gas pressure sensor, and after the air conditioning control instruction is sent to the air conditioning host, the method further includes: The cabin gas pressure and the target refrigeration compartment gas pressure are collected by the gas pressure sensor. When it is detected that the target refrigerated cabin air pressure is greater than the sum of the vehicle cabin air pressure and the set pressure difference, the running time is compared with the target exhaust time; According to the size relationship between the running time and the target exhaust time, a stop instruction is sent to the air conditioner host.

[0011] In a possible implementation manner of the first aspect, according to the size relationship between the running time and the target exhaust time, the stop instruction is sent to the air conditioner host, including: If the running time is greater than the target exhaust time, it is determined whether the current vehicle is started; If the vehicle has been started, the stop instruction is sent to the air conditioner host, so that the air conditioner host controls the air supply motor to stop working; If the vehicle has not been started, the stop instruction is sent to the air conditioner host after the vehicle is started.

[0012] In a possible implementation manner of the first aspect, according to the size relationship between the running time and the target exhaust time, the stop instruction is sent to the air conditioner host, including: If the running time is less than the target exhaust time, it is determined whether the current vehicle is started when the target exhaust time is reached; If the vehicle has been started, the stop instruction is sent to the air conditioner host; If the vehicle has not been started, the stop instruction is sent to the air conditioner host after the vehicle is started.

[0013] In a possible implementation manner of the first aspect, when the vehicle travels to the starting point of a specific range, an air conditioner control instruction is sent to the air conditioner host, the air conditioner control instruction including the position of the target refrigerated cabin, including: According to the exhaust time, the target working power of the air supply motor is calculated, and when the vehicle travels to the starting point of a specific range, an air conditioner control instruction is sent to the air conditioner host, the air conditioner control instruction including the position of the target refrigerated cabin and the target working power.

[0014] In a possible implementation manner of the first aspect, the vehicle terminal is built-in with a GPS module, and after the air conditioner control instruction is sent to the air conditioner host when the vehicle travels into a specific range, the method further includes: The position point received by the GPS module is compared with a pre-set interference area, and when it is detected that the vehicle travels into the interference area, the air conditioner control instruction is sent to the air conditioner host.

[0015] The second aspect of the present application provides a mutton cold chain transportation control system, the system includes: The mutton cold chain transportation control system includes a plurality of refrigerated cabins, and the refrigerated cabins are connected to the air inlet channel of the air conditioning system; the mutton cold chain transportation control system further includes a regulating valve, an air supply motor, an air conditioner host, a vehicle terminal and a conveying device, wherein, The vehicle terminal is used to execute the mutton cold chain transportation control method proposed in the first aspect, select the target refrigerated compartment, and send the air conditioning control command to the air conditioning host to input gas into the target refrigerated compartment; The air conditioning unit is connected to the vehicle terminal to respond to air conditioning control commands, control the start of the blower motor to input gas into the intake channel, and control the channel switching of the regulating valve, thereby inputting the gas from the intake channel into the corresponding refrigerated compartment. The blower motor is used to draw air into the air intake channel in response to the instructions of the air conditioning unit; The regulating valve is used to switch channels in response to commands from the air conditioning unit; The gantry crane is used to respond to gantry crane control commands to open or close the target refrigerated compartment door; Each refrigerated compartment is equipped with a door operator at the bottom, and a conveyor device is installed at the bottom of the compartment. The conveyor device is connected to the vehicle terminal and is used to transport the food storage unit after responding to the vehicle terminal's command.

[0016] Compared to existing technologies, this application provides a cold chain transportation control system and method for mutton. The embodiments of this application determine the loading order of mutton and related foods affecting its properties based on the location relationships of stations along the transportation route. Following this loading order, and ensuring that the spaces where mutton and related foods are located do not overlap, the storage location of the mutton is flexibly adjusted. This ensures that the mutton is not affected by the odors of the managed foods during loading. Furthermore, within the vicinity of the loading station, the air conditioning unit controls the regulating valve to switch the ventilation channels, maintaining positive pressure in the target refrigerated compartment. This ensures that residual gas is expelled from the compartment before loading the mutton, reducing the impact of the previous food loading on the mutton and further guaranteeing that the properties of the mutton do not change. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the composition of the mutton cold chain transportation control system according to an embodiment of this application; Figure 2 This is a flowchart of the steps of the cold chain transportation control method for mutton proposed in the embodiments of this application; Figure 3 A schematic diagram of the location of a refrigerated compartment is provided as an example in this application; Figure 4This is another schematic diagram of the mutton cold chain transportation control system in this application embodiment; Figure 5 This is another schematic diagram of the mutton cold chain transportation control system of this application embodiment; Figure 6 This is a flowchart illustrating the steps of implementing another method for controlling the cold chain transportation of mutton according to an embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0021] Urban intelligent cold chain distribution refers to the distribution of temperature-sensitive goods such as fresh food and medicine within urban areas through professional refrigerated vehicles, temperature control equipment, and information management systems. Following a planned route from the warehousing center to the retail terminal or consumer, the goods stop at pre-set stations to dock with intelligent robots for unloading and loading.

[0022] As a high-protein and perishable food, mutton faces multiple challenges in cold chain transportation: mutton easily absorbs environmental odors, such as seafood and chemicals, and its muttony smell is easily absorbed by other foods. Specific microorganisms such as Pseudomonas and Thermonas hydrophila are prone to grow on the surface of mutton, and their reproduction accelerates when temperatures fluctuate. Therefore, the storage location of mutton in cold chain transport vehicles is particularly important.

[0023] In the process of urban intelligent cold chain distribution, automated loading typically arranges goods in a specific order for three-dimensional stacking. However, due to the special nature of mutton, if stored improperly, such as close to seafood or other strongly scented foods, the mutton will absorb the odors of other foods and spoil. Simultaneously, other foods with high preservation requirements will also be affected by the mutton, resulting in losses for retailers or consumers. To ensure mutton is stored in the proper location, manual intervention is needed to confirm the loaded goods and adjust their placement, reducing the efficiency of cold chain distribution.

[0024] In view of the above problems, this application proposes a method for controlling the cold chain transportation of mutton, which is applied to the vehicle terminal of the mutton cold chain transportation control system to realize the full automation of the mutton cold chain distribution process and ensure the quality of mutton. The method adjusts the reserved refrigerated location according to the driving route, automatically identifies the mutton loading container, and stores the mutton in the refrigerated location pre-set for the mutton to be loaded at the current station, thus realizing automatic loading of mutton during the cold chain transportation process.

[0025] Figure 1 This is a schematic diagram of the composition of the mutton cold chain transportation control system according to an embodiment of this application, as shown below. Figure 1 As shown, the mutton cold chain transportation control system includes multiple refrigerated compartments, each connected to the air intake channel of an air conditioning system. The control system comprises an air intake channel, regulating valves, a blower motor, an air conditioning unit, a vehicle terminal, and a conveyor system. The air conditioning unit is connected to the vehicle terminal to control the start of the blower motor to input gas into the intake channel, and to control the channel switching of the regulating valve to input the gas from the intake channel into the corresponding refrigerated compartment. The blower motor is used to draw air into the air intake channel in response to the instructions of the air conditioning unit; The regulating valve is used to switch channels in response to commands from the air conditioning unit; The vehicle terminal is used to execute the mutton cold chain transportation control method proposed in other embodiments of this application, select the target refrigerated compartment, send an air conditioning control command to the air conditioning host to input gas into the target refrigerated compartment, and send a door control command to the door of the target compartment to control the door of the target compartment to open to store the food storage container.

[0026] The gantry crane is used to respond to gantry crane control commands to open or close the target refrigerated compartment door.

[0027] Each refrigerated compartment is equipped with a door operator at the bottom, and a conveyor is installed at the bottom of the compartment. The conveyor is connected to the vehicle terminal and can start or stop in response to the vehicle terminal's commands. The conveyor is used to transport the food storage containers after it is started in response to the vehicle terminal's commands.

[0028] The blower motor is connected to multiple air intake channels through multiple regulating valves. Each regulating valve corresponds to one air intake channel. The regulating valve is a diverting device with three channels that can switch between two flow directions. According to the control command of the air conditioning unit, the channel is switched to change the flow path of the gas input to the blower motor. By switching the channels of the regulating valve, the gas can be controlled to enter the corresponding refrigeration compartment. The air entering the corresponding refrigeration compartment creates positive pressure in the space of the refrigeration compartment, allowing the air to circulate.

[0029] The air conditioning unit controls and is connected to a blower motor to deliver air to the air intake channel. The air conditioning unit communicates with the vehicle terminal located in the carriage. The air conditioning unit responds to the instructions of the vehicle terminal and executes the corresponding program to control the operation of the blower motor. At the same time, the vehicle terminal communicates with the door operator and the conveyor device. The food container is sent into the conveyor device, which is started, operated and stopped under the control of the vehicle terminal. The door operator opens upon receiving the instruction from the vehicle terminal. The robotic arm inside the refrigerated compartment extends to pull the food container into the refrigerated compartment, realizing the automatic loading of food into the food container.

[0030] The food storage container has a label on the outside, which is a QR code. Scanning the QR code will reveal the specific food stored in the container.

[0031] Figure 2 This is a flowchart of the steps of the cold chain transportation control method for mutton proposed in the embodiments of this application, for reference. Figure 2 The steps include: S11: Receive a cold chain transportation task, the cold chain transportation task including a driving route and the food to be loaded at loading and unloading stations along the driving route; there may be one or more loading and unloading stations. S12: If mutton is present in the food loaded at any loading / unloading station, find the second station corresponding to the associated food containing mutton.

[0032] Foods that can affect lamb include those with a strong odor or volatile substances, such as seafood, dairy products, onions, garlic, scallions, curry powder, five-spice powder, and durian.

[0033] If none of the food items loaded at any of the loading and unloading stations contain mutton, the task of finding the second station corresponding to the food items containing mutton will not be executed, and the program will terminate.

[0034] S13: Determine the target refrigerated compartment for storing mutton based on the order of the first and second stations on the travel route.

[0035] The first stop is where the mutton is loaded onto the truck.

[0036] In one example of this application, when a vehicle arrives at the second station first and then the first station while traveling along the route, the target refrigerated compartment will be selected before the refrigerated compartment storing the associated food. The front-to-back relationship of the refrigerated compartment is related to the entrance of the food storage container into the conveyor system.

[0037] Figure 3 This application provides an example of a schematic diagram showing the location of a refrigerated compartment. Refrigerated compartment 1 is closer to the entrance of the conveying device than refrigerated compartment 2, and refrigerated compartment 1 is the refrigerated compartment preceding refrigerated compartment 2. Refrigerated compartment 1 and refrigerated compartment 2 are closer to the entrance of the conveying device than refrigerated compartment 3, and refrigerated compartment 1 and refrigerated compartment 2 are the refrigerated compartments preceding refrigerated compartment 3.

[0038] When a vehicle arrives at the first station and then the second station while traveling along the route, it will select the target refrigerated compartment after the refrigerated compartment storing the associated food.

[0039] For example, continue to refer to Figure 3 The vehicle terminal compares the sequential location of the loading and unloading stations and the corresponding food items at each station. The route is station 1-station 2-station 3. Station 1 is planned to load seafood and spices, station 2 is planned to load mutton, and the food items planned to be loaded at station 3 do not affect the mutton and seafood. The vehicle terminal selects either refrigerated compartment 2 or refrigerated compartment 3 to store seafood. It opens the compartment at station 2. If the vehicle terminal stores seafood and spices in refrigerated compartment 2, then refrigerated compartment 1 is selected as the target refrigerated compartment. If the vehicle terminal stores seafood and spices in refrigerated compartment 3, then either refrigerated compartment 1 or refrigerated compartment 2 is selected as the target refrigerated compartment. S14: When the vehicle enters a specific range, an air conditioning control command is sent to the air conditioning unit. The air conditioning control command includes the location of the target refrigerated compartment. The specific range is based on the area selected by the first station.

[0040] For example, assuming the station is at location A(x,y), with a specific range of (x+z,y+z), the value of Z is related to the vehicle's speed and the food storage history of the target refrigerated compartment. For example, if the target refrigerated compartment has not stored any food after cleaning, Z can be set to 0. After the vehicle arrives at the station, the vehicle terminal sends an air conditioning control command to the air conditioning host.

[0041] When the air conditioning unit receives the air conditioning control command, it controls the fan motor to start and input inert gas into the air intake channel. It then sends a channel switching command to the regulating valve corresponding to the target refrigerated compartment. The regulating valve switches the gas channel, allowing the inert gas input into the air intake channel to enter the target refrigerated compartment. This creates positive pressure in the space inside the target refrigerated compartment. When the mutton is stored in the target refrigerated compartment, the positive pressure prevents external air affected by the related food from entering the target refrigerated compartment, thus avoiding spoilage or off-flavors of the mutton due to the influence of the related food.

[0042] The embodiments of this application also include the following steps: S15: The vehicle is detected to have arrived at the first station. By scanning the QR code information on the sign, the mutton storage container is identified. A control signal is sent to the conveyor. The control signal includes the start command of the conveyor, the specified running time, and the stop command of the conveyor. The specified running time is calculated based on the position of the target refrigerated compartment and the speed of the conveyor.

[0043] After the vehicle arrives at the first station, the vehicle terminal scans the QR code information on the label to identify the food stored in the food storage container of the conveyor device.

[0044] The conveyor starts operating in response to the start command, and stops operating in response to the stop command after a specified running time.

[0045] S16: After waiting for the specified running time, send the door opening command to the door operator of the target refrigerated compartment.

[0046] After a specified running time, the vehicle terminal sends an opening command to the door operator of the target refrigerated compartment. The door operator of the target refrigerated compartment opens, and the built-in robotic arm of the target refrigerated compartment extends to put the food storage container containing mutton into the target refrigerated compartment.

[0047] This application embodiment starts from the positional relationship of stations on the driving route, determines the order of loading mutton and related foods that affect the properties of mutton, and flexibly adjusts the storage position of mutton according to the order of loading mutton and related foods, with the principle that the spaces where mutton and related foods are located will not overlap. This ensures that the mutton will not be affected by the odor of managed foods during the loading process. In the vicinity of the loading station, the air conditioning host controls the regulating valve to switch the ventilation channel to make the target refrigerated compartment positive pressure, ensuring that the target compartment exhausts the residual gas in the compartment before loading mutton, reducing the impact of the food loaded in the target refrigerated compartment on the mutton, and further ensuring that the properties of mutton will not change.

[0048] This application also provides another method for implementing the cold chain transportation control method for mutton. Figure 4 This is another schematic diagram of the mutton cold chain transportation control system in this application embodiment, for reference. Figure 4Each refrigerated compartment of the mutton cold chain transportation control system is also equipped with a gas sensor. The gas sensor is communicatively connected to the vehicle terminal to sense the air quality within the compartment and transmit the information to the vehicle terminal. For example, the gas sensor is used to detect gases that affect mutton spoilage, such as 4-methyloctanoic acid, hexanoic acid, hexanal, carbon dioxide, hydrogen sulfide, methanethiol, and the concentration of these gases has been detected.

[0049] Another method for implementing cold chain transportation control for mutton includes the following steps: S21: Receive a cold chain transportation task, the cold chain transportation task including a driving route and the food to be loaded at loading and unloading stations along the driving route; there may be one or more loading and unloading stations. S22: If mutton is present in the food loaded at any loading / unloading station, find the second station corresponding to the associated food containing mutton.

[0050] S23: Determine the target refrigerated compartment for storing mutton based on the order of the first and second stations on the travel route.

[0051] S24: Retrieve gas data uploaded by the gas sensor installed in the target refrigerated compartment, calculate the concentration and volume of the refrigerated compartment based on the gas data, and calculate the amount of gas to be discharged.

[0052] S25: Calculate the target exhaust time for the original gas in the target refrigerated compartment after the input of inert gas, based on the amount of gas to be discharged.

[0053] For example, formula (1) can be used to establish the relationship between the exhaust time and the amount of gas to be exhausted: (1); Where L represents the amount of gas to be discharged, and Q represents the input rate of the inert gas.

[0054] For example, suppose the maximum value of Z is determined to be Z1 based on the actual conditions of the driving route. The average driving speed V is set according to the traffic rules near the station. For example, if there is a primary school near the station, the speed cannot exceed R m / s, or the speed on the road where the station is located cannot exceed W m / s, etc. These are all traffic rules near the station. Based on Z1 and V, the maximum exhaust time tmax is calculated.

[0055] With the constraint of ensuring that the working power P of the blower motor is minimized, input L into the running formula (1), select the target exhaust time in the range of [tmax,0]; ​​then substitute the target exhaust time and average driving speed into the distance calculation formula to obtain the Z value, that is, obtain the starting point of the specific range.

[0056] By substituting the target exhaust time into formula (1), the target operating power P0 of the blower motor is determined.

[0057] S26: Calculate the starting point of the specific range based on the target exhaust time.

[0058] S27: When the vehicle travels to the starting point of a specific range, an air conditioning control command is sent to the air conditioning host, the air conditioning control command including the location of the target refrigerated compartment.

[0059] After the original gas in the target refrigerated compartment is expelled, the blower motor continues to supply inert gas into the air intake channel to ensure positive pressure in the target refrigerated compartment.

[0060] Figure 5 This is another schematic diagram of the mutton cold chain transportation control system in this application, for reference. Figure 5 The mutton cold chain transportation control system also includes air pressure sensors; the air pressure sensors are respectively installed in the carriage and inside each refrigerated compartment.

[0061] After sending the air conditioning control command to the air conditioning unit, the vehicle terminal will select an appropriate time to send a stop command to the air conditioning unit based on the actual situation, so that the air conditioning unit stops operating without needing to input a large amount of gas into the air intake channel, thus saving energy.

[0062] After performing step S14 or S27, the following steps may also be performed: S111: Collects air pressure in the carriage and the target refrigerated compartment using air pressure sensors; S112: When the target refrigerated compartment air pressure is detected to be greater than the sum of the difference between the compartment air pressure and the set pressure, compare the running time with the target exhaust time; S113: Based on the relationship between the running time and the target exhaust time, send a stop command to the air conditioning unit.

[0063] After executing S113, perform the following steps based on the first result: If the runtime exceeds the target exhaust time, determine whether the vehicle is currently running. If the vehicle is running, send a stop command to the air conditioning unit to stop the air conditioning unit from controlling the blower motor. If the vehicle is not running, send a stop command to the air conditioning unit after the vehicle starts.

[0064] After executing S113, perform the following steps based on the second result: If the running time is less than the target exhaust time, wait until the target exhaust time to determine whether the vehicle is currently running; if the vehicle is running, send a stop command to the air conditioning unit; if the vehicle is not running, send a stop command to the air conditioning unit after the vehicle starts.

[0065] After the vehicle terminal sends the air conditioning control command to the air conditioning unit, it can also perform the following steps: It collects the air pressure in the passenger compartment and the target refrigerated compartment using a pressure sensor. When the target refrigerated compartment pressure is detected to be greater than the sum of the passenger compartment pressure and the set pressure difference, it compares the running time with the target exhaust time. If the running time is greater than the target exhaust time, it determines whether the vehicle is currently running. If the vehicle is running, it sends a stop command to the air conditioning unit, which then controls the blower motor to stop working. If the vehicle is not running, it sends a stop command to the air conditioning unit after the vehicle has started.

[0066] If the running time is less than the target exhaust time, wait until the target exhaust time to determine if the vehicle is currently running. If the vehicle is running, send a stop command to the air conditioning unit. If the vehicle is not running, send a stop command to the air conditioning unit after the vehicle starts.

[0067] Runtime is the time interval between the time it takes for the vehicle terminal to send an air conditioning control command to the air conditioning unit and the current time.

[0068] For example, after the vehicle terminal sends the air conditioning control command to the air conditioning unit, the blower motor starts to input inert gas into the target refrigerated compartment. If the air pressure in the target refrigerated compartment is detected to be greater than the sum of the air pressure in the vehicle compartment and the set pressure difference, it indicates that the target refrigerated compartment has formed positive pressure. If the target refrigerated compartment forms positive pressure before the original gas is discharged, the time when the original gas is discharged is compared with the vehicle start time. In principle, the latest of the three times—the time when the original gas is discharged, the vehicle start time, and the time when the target refrigerated compartment forms positive pressure—is selected as the time to send the stop command. This ensures that the original gas in the target refrigerated compartment is discharged during the loading process and that the target refrigerated compartment is in a positive pressure state, thereby ensuring that there are no other gases in the environment where the mutton is stored and that the properties of the mutton do not change.

[0069] The execution of S27 "When the vehicle travels to the starting point of a specific range, send an air conditioning control command to the air conditioning host, the air conditioning control command including the location of the target refrigerated compartment" can be achieved by performing the following steps: calculate the target operating power of the blower motor based on the exhaust time, and when the vehicle travels to the starting point of a specific range, send an air conditioning control command to the air conditioning host, the air conditioning control command including the location of the target refrigerated compartment and the target operating power.

[0070] Given the required gas volume to be discharged from the target refrigerated compartment, estimate the volume of inert gas to be input into the target refrigerated compartment, and calculate the target operating power of the blower motor based on the exhaust time and the volume of inert gas input into the target refrigerated compartment.

[0071] This application also provides another method for implementing the cold chain transportation control method for mutton. Figure 6 This is a flowchart illustrating the steps of another method for controlling the cold chain transportation of mutton, as described in this application embodiment. Figure 6As shown, the steps include: S31: Receive a cold chain transportation task, the cold chain transportation task including a driving route and the food to be loaded at loading and unloading stations along the driving route; there may be one or more loading and unloading stations. S32: If mutton is present in the food loaded at any loading / unloading station, find the second station corresponding to the associated food containing mutton.

[0072] S33: Determine the target refrigerated compartment for storing mutton based on the order of the first and second stations on the travel route; S34: When the vehicle enters a specific range, an air conditioning control command is sent to the air conditioning host, the air conditioning control command including the location of the target refrigerated compartment; S35: The vehicle terminal has a built-in GPS module. It compares the location points received by the GPS module with the pre-set interference area. When the vehicle is detected to be in the interference area, it sends an air conditioning control command to the air conditioning host.

[0073] Interference areas refer to areas along the travel route that may cause the mutton to spoil, such as the seaside, toilets, garbage dumps, hot pot restaurants, etc.

[0074] When the air conditioning unit receives the air conditioning control command, it controls the fan motor to start and input inert gas into the air intake channel. It then sends a channel switching command to the regulating valve corresponding to the target refrigerated compartment. The regulating valve switches the gas channel, allowing the inert gas input into the air intake channel to enter the target refrigerated compartment. This creates positive pressure in the space inside the target refrigerated compartment where the mutton is stored. Even if the vehicle is not well sealed, external gases will not affect the mutton stored in the target refrigerated compartment.

[0075] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computing software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0076] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0077] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method for controlling the cold chain transportation of mutton, characterized in that, A vehicle terminal is applied to a mutton cold chain transportation control system, which includes a vehicle terminal, a refrigerated compartment, and an air conditioning unit. The method includes: Receive a cold chain transportation task, the cold chain transportation task including a driving route and the food to be loaded at loading and unloading stations along the driving route; there may be one or more loading and unloading stations. If mutton is present in the food loaded at any loading or unloading station, find the second station corresponding to the associated food containing mutton. Based on the order of the first and second stations on the travel route, the target refrigerated compartment for storing mutton is determined; the first station is the station where the food loaded is mutton. When the vehicle enters a specific range, an air conditioning control command is sent to the air conditioning unit. The air conditioning control command includes the location of the target refrigerated compartment. The specific range is based on the area selected by the first station.

2. The method according to claim 1, characterized in that, The mutton cold chain transportation control system also includes a conveying device that determines the target refrigerated compartment for storing mutton based on the sequential relationship between the first and second stations on the travel route, including: When the vehicle arrives at the second station before the first station while traveling along the route, it will select the target refrigerated compartment before the refrigerated compartment storing the associated food; the front and back relationships of the refrigerated compartments are related to the entrance of the food storage container into the conveyor device. When a vehicle arrives at the first station and then the second station while traveling along the route, it will select the target refrigerated compartment after the refrigerated compartment storing the associated food.

3. The method according to claim 1, characterized in that, The method further includes: Once the vehicle arrives at the first station, the system scans the QR code information to identify the mutton storage container and sends a control signal to the conveyor. The control signal includes the start command for the conveyor, a specified running time, and a stop command for the conveyor. The specified running time is calculated based on the position of the target refrigerated compartment and the speed of the conveyor. After waiting for the specified running time, send the door opening command to the door operator of the target refrigerated compartment.

4. The method according to claim 1, characterized in that, The mutton cold chain transportation control also includes gas sensors. After determining the target refrigerated compartment for storing mutton based on the sequential relationship between the first and second stations on the travel route, the method further includes: Obtain gas data uploaded by the gas sensor installed in the target refrigerated compartment, calculate the concentration and volume of the refrigerated compartment based on the gas data, and calculate the amount of gas to be discharged; Calculate the target exhaust time for the original gas in the target refrigerated compartment after the input of inert gas, based on the amount of gas to be discharged. Calculate the starting point of the specific range based on the target exhaust time; When the vehicle reaches the starting point of a specific range, an air conditioning control command is sent to the air conditioning unit, the air conditioning control command including the location of the target refrigerated compartment.

5. The method according to claim 1, characterized in that, The mutton cold chain transportation control system also includes a pressure sensor. After sending air conditioning control commands to the air conditioning unit, the method further includes: The air pressure in the carriage and the air pressure in the target refrigerated compartment are collected using air pressure sensors. When the air pressure of the target refrigerated compartment is detected to be greater than the sum of the air pressure difference between the compartment and the set pressure, the running time is compared with the target exhaust time. Based on the relationship between the running time and the target exhaust time, a stop command is sent to the air conditioning unit.

6. The method according to claim 5, characterized in that, Based on the relationship between the runtime and the target exhaust time, a stop command is sent to the air conditioning unit, including: If the runtime exceeds the target exhaust time, determine whether the vehicle is currently running. If the vehicle has already started, send a stop command to the air conditioning unit so that the air conditioning unit controls the blower motor to stop working. If the vehicle is not started, a stop command will be sent to the air conditioning unit after the vehicle is started.

7. The method according to claim 5, characterized in that, Based on the relationship between the runtime and the target exhaust time, a stop command is sent to the air conditioning unit, including: If the running time is less than the target exhaust time, wait until the target exhaust time to determine whether the current vehicle should start. If the vehicle has already started, send a stop command to the air conditioning unit; If the vehicle is not started, a stop command will be sent to the air conditioning unit after the vehicle is started.

8. The method according to claim 4, characterized in that, When the vehicle reaches the starting point of a specific range, an air conditioning control command is sent to the air conditioning unit. This air conditioning control command includes the location of the target refrigerated compartment, and includes: The target operating power of the blower motor is calculated based on the exhaust time. When the vehicle travels to the starting point of a specific range, an air conditioning control command is sent to the air conditioning unit. The air conditioning control command includes the position of the target refrigerated compartment and the target operating power of the blower motor.

9. The method according to claim 1, characterized in that, The vehicle terminal has a built-in GPS module. When the vehicle enters a specific range, it sends an air conditioning control command to the air conditioning unit. The method further includes: By comparing the location points received by the GPS module with the pre-set interference area, when a vehicle is detected to be entering the interference area, an air conditioning control command is sent to the air conditioning host.

10. A cold chain transportation control system for mutton, characterized in that, The mutton cold chain transportation control system includes multiple refrigerated compartments, each connected to the air intake channel of an air conditioning system. The system also includes regulating valves, blower motors, an air conditioning unit, vehicle terminals, and conveyor devices. The vehicle terminal is used to execute the mutton cold chain transportation control method as described in any one of claims 1-9, select the target refrigerated compartment, and send an air conditioning control command to the air conditioning host to input gas into the target refrigerated compartment; The air conditioning unit is connected to the vehicle terminal to respond to air conditioning control commands, control the start of the blower motor to input gas into the intake channel, and control the channel switching of the regulating valve, thereby inputting the gas from the intake channel into the corresponding refrigerated compartment. The blower motor is used to draw air into the air intake channel in response to the instructions of the air conditioning unit; The regulating valve is used to switch channels in response to commands from the air conditioning unit; The gantry crane is used to respond to gantry crane control commands to open or close the target refrigerated compartment door; Each refrigerated compartment is equipped with a door operator at the bottom, and a conveyor device is installed at the bottom of the compartment. The conveyor device is connected to the vehicle terminal and is used to transport the food storage unit after responding to the vehicle terminal's command.

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