An intelligent fresh-keeping system and method for pre-prepared dishes based on the Internet

Abstract

The present invention provides an Internet-based intelligent fresh-keeping system and method for pre-prepared meals, which visually identifies the pre-prepared meal packaging process of a production line and obtains packaging status information of the pre-prepared meal products, thereby adjusting the operating status of the pre-prepared meal packaging process and ensuring the sealing of the pre-prepared meal packaging; synchronizes the transportation attribute information of the pre-prepared meal products that have completed the packaging process to an Internet platform, thereby remotely monitoring the pre-prepared meal products during transportation, obtaining external and internal environmental information of the pre-prepared meal products during transportation, quantifying the internal and external environmental impacts of the pre-prepared meals during transportation, and determining abnormal refrigeration environment information of the pre-prepared meal products during transportation, thereby adjusting the refrigeration preservation mode of the refrigerated compartment where the pre-prepared meal products are located, and performing networked real-time refrigeration preservation monitoring on the transportation of the pre-prepared meals, thereby ensuring that the pre-prepared meals are always stored in a suitable refrigerated temperature environment during the entire transportation process.

Description

Technical Field

[0001] The present invention relates to the field of food processing, and in particular to an Internet-based intelligent fresh-keeping system and method for pre-prepared dishes. Background Art

[0002] As a semi-finished food, pre-prepared meals are easy to process and cost-effective, and have already occupied a certain share of the food market. The food safety of pre-prepared meals, especially imported and exported pre-prepared meals, has always been a major concern for consumers. To this end, pre-prepared meal manufacturers ensure the food safety of pre-prepared meals by conducting production traceability and strengthening quality control. In the actual production process, the logistics and transportation of pre-prepared meal products are also an important link in ensuring food safety. In many cases, pre-prepared meal products do not receive the appropriate refrigerated storage temperature during transportation, resulting in problems such as spoilage of the pre-prepared meal products. In addition, the repeated refrigeration and thawing of pre-prepared meal products will lead to the proliferation of bacteria, thereby reducing the safety of pre-prepared meal products. Therefore, networked real-time refrigeration and freshness preservation monitoring is required during the transportation of pre-prepared meal products to ensure that pre-prepared meal products are always stored in an appropriate refrigerated temperature environment throughout the transportation process. Summary of the Invention

[0003] The object of the present invention is to provide an Internet-based intelligent preservation system and method for pre-prepared meals, which visually identifies the pre-prepared meal packaging process of the production line and obtains the packaging status information of the pre-prepared meal products, thereby adjusting the operating status of the pre-prepared meal packaging process, ensuring the sealing of the pre-prepared meal packaging, and effectively isolating the pre-prepared meal from the external environment; synchronizes the transportation attribute information of the pre-prepared meal products that have completed the packaging process to the Internet platform, thereby remotely monitoring the pre-prepared meal products during transportation, obtaining the external and internal environmental information of the pre-prepared meal products during transportation, quantifying the internal and external environmental impacts of the pre-prepared meal during transportation, and determining the abnormal refrigeration environment information of the pre-prepared meal products during transportation, thereby adjusting the refrigeration preservation mode of the refrigerated compartment where the pre-prepared meal products are located, and performing networked real-time refrigeration preservation monitoring on the transportation of the pre-prepared meal, thereby ensuring that the pre-prepared meal is always stored in a suitable refrigerated temperature environment during the entire transportation process.

[0004] The present invention is achieved through the following technical solutions:

[0005] An Internet-based intelligent fresh-keeping system for prepared dishes, comprising:

[0006] The pre-prepared food sealing defect recognition module is used to visually identify the pre-prepared food packaging process of the production line and obtain the packaging status information of the pre-prepared food products;

[0007] a packaging process operation adjustment module, configured to adjust the operation state of the pre-prepared meal packaging process based on the packaging state information;

[0008] An Internet information synchronization module is used to identify the transport attribute information of the pre-prepared food products that have completed the packaging process and synchronize the transport attribute information to the Internet platform;

[0009] a transport remote monitoring module, configured to remotely monitor the pre-prepared meal product during transport based on the transport attribute information, and obtain external and internal environmental information of the pre-prepared meal product during transport;

[0010] a refrigerated environment abnormality identification module, configured to determine abnormal refrigerated environment information of the pre-prepared meal product during transportation based on the external environment information and the internal environment information;

[0011] The refrigeration and freshness-keeping module adjustment module is used to adjust the refrigeration and freshness-keeping mode of the refrigeration compartment where the pre-prepared food products are located based on the abnormal refrigeration environment information.

[0012] Optionally, the pre-prepared meal sealing defect recognition module is used to perform visual recognition on the pre-prepared meal packaging process of the production line to obtain packaging status information of the pre-prepared meal product, including:

[0013] Perform binocular photography of a spatial area corresponding to the pre-prepared meal packaging process of a production line to obtain a binocular image of the corresponding spatial area; generate a three-dimensional image of the spatial area based on the binocular parallax of the binocular image of the spatial area; perform pixel contour recognition on the three-dimensional image of the spatial area to obtain contour feature information of the packaging portion of the pre-prepared meal product;

[0014] The packaging process operation adjustment module is used to adjust the operation state of the pre-prepared meal packaging process based on the packaging state information, including:

[0015] Based on the contour feature information of the packaging part, the coverage status information of the packaging part of the pre-prepared food product is determined; wherein, the coverage status information includes the coverage range information and coverage fit tightness information of the packaging part on the pre-prepared food; and then based on the coverage status information, the coverage position and / or winding action strength of the packaging part of the pre-prepared food product in the pre-prepared food packaging process is adjusted.

[0016] Optionally, the Internet information synchronization module is used to identify the transport attribute information of the pre-prepared food product that has completed the packaging process and synchronize the transport attribute information to the Internet platform, including:

[0017] Obtaining the terminal identity information of the transportation vehicle that delivers the pre-packaged meal product, and synchronously uploading the terminal identity information to the Internet platform;

[0018] The transport remote monitoring module is used to remotely monitor the pre-prepared meal product during transportation based on the transport attribute information, and obtain external and internal environmental information of the pre-prepared meal product during transportation, including:

[0019] Based on the terminal identity information, the transportation process of the transportation vehicle is remotely located and tracked, and the refrigeration equipment of the transportation vehicle is remotely monitored to obtain the transportation trajectory information of the transportation vehicle and the working status information of the refrigeration equipment; based on the transportation trajectory information, the external environmental temperature information of the pre-prepared food product during the transportation process is determined as the external environmental information; based on the working status information of the refrigeration equipment, the temperature information of the refrigerated compartment of the transportation vehicle during the transportation of the pre-prepared food product is determined as the internal environmental information.

[0020] Optionally, the refrigerated environment abnormality identification module is configured to determine abnormal refrigerated environment information of the pre-prepared meal product during transportation based on the external environment information and the internal environment information, including:

[0021] Based on external environmental temperature information of the pre-prepared meal product during transportation and temperature information of a refrigerated compartment of the transportation vehicle during transportation of the pre-prepared meal product, determining distribution information of abnormal refrigeration temperature drift areas inside the refrigerated compartment during transportation of the pre-prepared meal product, and using this as the refrigerated environment abnormality information;

[0022] The refrigeration and freshness-keeping module adjustment module is used to adjust the refrigeration and freshness-keeping mode of the refrigeration compartment where the pre-prepared food products are located based on the refrigeration environment abnormality information, including:

[0023] Based on the distribution information of the abnormal refrigeration temperature drift area, the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment are adjusted; wherein the cold air delivery parameters include cold air delivery speed and / or cold air delivery direction.

[0024] An intelligent method for pre-prepared food preservation based on the Internet, comprising:

[0025] Performing visual recognition on a pre-prepared meal packaging process of a production line to obtain packaging status information of the pre-prepared meal product; and adjusting an operating state of the pre-prepared meal packaging process based on the packaging status information;

[0026] The pre-prepared meal products that have completed the packaging process are marked with transportation attribute information, and the transportation attribute information is synchronized to an Internet platform; based on the transportation attribute information, the pre-prepared meal products are remotely monitored during transportation to obtain external and internal environmental information of the pre-prepared meal products during transportation;

[0027] Based on the external environmental information and the internal environmental information, abnormal refrigeration environment information of the pre-prepared food product during transportation is determined; based on the abnormal refrigeration environment information, the refrigeration and preservation mode of the refrigeration compartment where the pre-prepared food product is located is adjusted.

[0028] Optionally, visual recognition is performed on a pre-prepared meal packaging process of a production line to obtain packaging status information of the pre-prepared meal product; and based on the packaging status information, an operation status of the pre-prepared meal packaging process is adjusted, including:

[0029] Perform binocular photography of a spatial area corresponding to the pre-prepared meal packaging process of a production line to obtain a binocular image of the corresponding spatial area; generate a three-dimensional image of the spatial area based on the binocular parallax of the binocular image of the spatial area; perform pixel contour recognition on the three-dimensional image of the spatial area to obtain contour feature information of the packaging portion of the pre-prepared meal product;

[0030] Based on the contour feature information of the packaging part, the coverage status information of the packaging part of the pre-prepared food product is determined; wherein, the coverage status information includes the coverage range information and coverage fit tightness information of the packaging part on the pre-prepared food; and then based on the coverage status information, the coverage position and / or winding action strength of the packaging part of the pre-prepared food product in the pre-prepared food packaging process is adjusted.

[0031] Optionally, the pre-prepared meal product that has completed the packaging process is marked with transport attribute information, and the transport attribute information is synchronized to an Internet platform; based on the transport attribute information, the pre-prepared meal product is remotely monitored during transportation to obtain external and internal environmental information of the pre-prepared meal product during transportation, including:

[0032] Obtaining the terminal identity information of the transportation vehicle that delivers the pre-packaged meal product, and synchronously uploading the terminal identity information to the Internet platform;

[0033] Based on the terminal identity information, the transportation process of the transportation vehicle is remotely located and tracked, and the refrigeration equipment of the transportation vehicle is remotely monitored to obtain the transportation trajectory information of the transportation vehicle and the working status information of the refrigeration equipment; based on the transportation trajectory information, the external environmental temperature information of the pre-prepared food product during the transportation process is determined as the external environmental information; based on the working status information of the refrigeration equipment, the temperature information of the refrigerated compartment of the transportation vehicle during the transportation of the pre-prepared food product is determined as the internal environmental information.

[0034] Optionally, determining abnormal refrigeration environment information of the pre-prepared meal product during transportation based on the external environment information and the internal environment information; and adjusting a refrigeration and fresh-keeping mode of a refrigerated compartment where the pre-prepared meal product is located based on the abnormal refrigeration environment information, including:

[0035] Based on external environmental temperature information of the pre-prepared meal product during transportation and temperature information of a refrigerated compartment of the transportation vehicle during transportation of the pre-prepared meal product, determining distribution information of abnormal refrigeration temperature drift areas inside the refrigerated compartment during transportation of the pre-prepared meal product, and using this as the refrigerated environment abnormality information;

[0036] Based on the distribution information of the abnormal refrigeration temperature drift area, the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment are adjusted; wherein the cold air delivery parameters include cold air delivery speed and / or cold air delivery direction.

[0037] Optionally, based on the distribution information of the abnormal refrigeration temperature drift area, adjusting the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment includes:

[0038] Step S1: Assume that there are n temperature detection points in the refrigerated compartment. At time t, the value of the i-th temperature detection point is T it , then at time t, the temperature variance in the refrigerated compartment is:

[0039]

[0040] In the above formula (1), V(t) is the temperature variance in the cold storage at time t, i is the number of the temperature monitoring point, which is an integer greater than or equal to 1 and less than or equal to n;

[0041] Step S2: Set the preset temperature of the i-th monitoring point to T l , then the temperature excursion score in the refrigerated compartment at time t is:

[0042]

[0043] In the above formula (2), F(t) is the temperature deviation score in the cold storage at time t, w i is the weight coefficient of the i-th monitoring point;

[0044] Step S3: Determine the quantitative score of the distribution information of the abnormal refrigeration temperature drift area based on the calculation results of the above steps S1 and S2.

[0045]

[0046] In the above formula (3), D is the quantitative score of the distribution information of the abnormal area of ​​refrigerated temperature drift, t0 and t nare the start and end times of the scoring period, respectively; a is the temperature offset scoring weight coefficient; b is the temperature variance weight coefficient; both a and b are greater than 0 and less than 1, and their sum is 1;

[0047] When D is greater than the preset value, it indicates that the corresponding area belongs to the abnormal refrigeration temperature drift area, and at this time it is necessary to adjust the cold air delivery parameters of the refrigeration equipment of the transport vehicle to the refrigerated compartment; otherwise, it indicates that the corresponding area does not belong to the abnormal refrigeration temperature drift area, and at this time it is not necessary to adjust the cold air delivery parameters of the refrigeration equipment of the transport vehicle to the refrigerated compartment.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] The present application provides an Internet-based intelligent pre-prepared meal preservation system and method, which visually identifies the pre-prepared meal packaging process of the production line and obtains the packaging status information of the pre-prepared meal products, thereby adjusting the operating status of the pre-prepared meal packaging process, ensuring the sealing of the pre-prepared meal packaging, and effectively isolating the pre-prepared meal from the external environment; the transportation attribute information of the pre-prepared meal products that have completed the packaging process is synchronized to the Internet platform, thereby remotely monitoring the pre-prepared meal products during transportation, obtaining the external and internal environmental information of the pre-prepared meal products during transportation, quantifying the internal and external environmental impacts of the pre-prepared meal during transportation, and determining the abnormal refrigeration environment information of the pre-prepared meal products during transportation, thereby adjusting the refrigeration preservation mode of the refrigerated compartment where the pre-prepared meal products are located, and performing networked real-time refrigeration preservation monitoring of the transportation of the pre-prepared meal, to ensure that the pre-prepared meal is always stored in a suitable refrigerated temperature environment throughout the entire transportation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0051] Figure 1 This is a structural schematic diagram of an Internet-based intelligent fresh-keeping system for pre-prepared meals provided by the present invention.

[0052] Figure 2 The present invention provides a flow chart of an Internet-based intelligent method for pre-prepared food preservation. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. It will be understood that the specific embodiments described herein are only used to explain the present application, rather than to limit the present application. It should also be noted that, for ease of description, only some, rather than all, structures related to the present application are shown in the accompanying drawings. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0054] As used herein, the terms "comprise," "comprising," and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0055] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0056] See also Figure 1 As shown, an embodiment of the present application provides an Internet-based intelligent fresh-keeping system for pre-prepared meals. The Internet-based intelligent fresh-keeping system for pre-prepared meals includes:

[0057] The pre-prepared food sealing defect recognition module is used to visually identify the pre-prepared food packaging process of the production line and obtain the packaging status information of the pre-prepared food products;

[0058] A packaging process operation adjustment module, configured to adjust the operation state of the pre-prepared meal packaging process based on the packaging state information;

[0059] An Internet information synchronization module is used to identify the transport attribute information of the pre-prepared food products that have completed the packaging process and synchronize the transport attribute information to the Internet platform;

[0060] A transport remote monitoring module, configured to remotely monitor the pre-prepared meal product during transport based on the transport attribute information, and obtain external and internal environmental information of the pre-prepared meal product during transport;

[0061] a refrigeration environment abnormality identification module, configured to determine abnormal refrigeration environment information of the pre-prepared meal product during transportation based on the external environment information and the internal environment information;

[0062] The refrigeration and freshness-keeping module adjustment module is used to adjust the refrigeration and freshness-keeping mode of the refrigeration compartment where the pre-prepared food product is located based on the abnormal refrigeration environment information.

[0063] The beneficial effects of the above embodiments are that the Internet-based intelligent pre-prepared meal preservation system visually identifies the pre-prepared meal packaging process of the production line and obtains the packaging status information of the pre-prepared meal products, thereby adjusting the operating status of the pre-prepared meal packaging process, ensuring the sealing of the pre-prepared meal packaging, and achieving effective isolation of the pre-prepared meal from the external environment; synchronizing the transportation attribute information of the pre-prepared meal products that have completed the packaging process to the Internet platform, thereby remotely monitoring the pre-prepared meal products during transportation, obtaining the external and internal environmental information of the pre-prepared meal products during transportation, quantifying the internal and external environmental impacts of the pre-prepared meals during transportation, and determining the abnormal refrigeration environment information of the pre-prepared meal products during transportation, thereby adjusting the refrigeration preservation mode of the refrigerated compartment where the pre-prepared meal products are located, and performing networked real-time refrigeration preservation monitoring of the transportation of pre-prepared meals, thereby ensuring that the pre-prepared meals are always stored in a suitable refrigerated temperature environment throughout the entire transportation process.

[0064] In another embodiment, the pre-prepared meal sealing defect recognition module is used to visually identify the pre-prepared meal packaging process of the production line to obtain packaging status information of the pre-prepared meal product, including:

[0065] Perform binocular photography of the spatial area corresponding to the pre-prepared meal packaging process of the production line to obtain a binocular image of the corresponding spatial area; generate a three-dimensional image of the spatial area based on the binocular parallax of the binocular image of the spatial area; perform pixel contour recognition on the three-dimensional image of the spatial area to obtain contour feature information of the packaging part of the pre-prepared meal product;

[0066] The packaging process operation adjustment module is used to adjust the operation state of the pre-prepared meal packaging process based on the packaging state information, including:

[0067] Based on the contour feature information of the packaging part, the coverage status information of the packaging part of the pre-prepared food product is determined; wherein, the coverage status information includes the coverage range information and coverage fit tightness information of the packaging part on the pre-prepared food; and then based on the coverage status information, the coverage position and / or the wrapping action strength of the packaging part of the pre-prepared food product in the pre-prepared food packaging process is adjusted.

[0068] The beneficial effect of the above embodiment is that the pre-prepared food products need to be effectively sealed and packaged to avoid contact between the pre-prepared food and the external environment, thereby reducing the rate of deterioration of the pre-prepared food. For this reason, in the process of producing pre-prepared food, it is necessary to comprehensively and accurately control the pre-prepared food packaging process so that the packaging parts such as plastic wrap can fully seal and cover the pre-prepared food. For this reason, binocular photography and conversion are performed on the spatial area where the pre-prepared food packaging process of the production line is located to obtain a three-dimensional image of the corresponding spatial area, so that the three-dimensional image of the spatial area can refine the contour feature information of the packaging part of the pre-prepared food product (i.e., the contour feature information of the plastic wrap), which is convenient for subsequent accurate judgment of whether the packaging part fully seals and covers the pre-prepared food. In addition, based on the contour feature information of the packaging part, the coverage range information and coverage tightness information of the packaging part of the pre-prepared food product on the pre-prepared food are determined, so that the uncovered area range of the packaging part on the pre-prepared food product and the area range where there is a gap with the pre-prepared food product can be fully calibrated. Based on the coverage status information, the pre-prepared meal packaging process adjusts the covering position and / or wrapping force of the packaging part of the pre-prepared meal product, so that the pre-prepared meal packaging process can perform a full-range tight coverage packaging operation on the pre-prepared meal, effectively isolating the pre-prepared meal from the external environment, and preventing air and water vapor from the external environment from entering the pre-prepared meal.

[0069] In another embodiment, the Internet information synchronization module is used to identify the transportation attribute information of the pre-prepared food product that has completed the packaging process and synchronize the transportation attribute information to the Internet platform, including:

[0070] Obtain the terminal identity information of the transportation vehicle that delivers the pre-packaged meal products, and simultaneously upload the terminal identity information to the Internet platform;

[0071] The transport remote monitoring module is used to remotely monitor the pre-prepared meal product during transportation based on the transport attribute information, and obtain external and internal environmental information of the pre-prepared meal product during transportation, including:

[0072] Based on the terminal identity information, the transportation process of the transportation vehicle is remotely located and tracked, and the refrigeration equipment of the transportation vehicle is remotely monitored to obtain the transportation trajectory information of the transportation vehicle and the working status information of the refrigeration equipment; based on the transportation trajectory information, the external environmental temperature information of the pre-prepared food product during the transportation process is determined as the external environmental information; based on the working status information of the refrigeration equipment, the temperature information of the refrigerated compartment of the transportation vehicle during the transportation of the pre-prepared food product is determined as the internal environmental information.

[0073] The beneficial effect of the above embodiment is that after the pre-prepared food products have completed the packaging process, they need to be transported by logistics, so as to be delivered to the corresponding area. During the logistics transportation of pre-prepared food products, a transportation vehicle with a refrigerated compartment is usually used to store the pre-prepared food products in the refrigerated compartment to ensure that the pre-prepared food products are in a suitable refrigerated temperature environment throughout the logistics transportation process. However, during the actual logistics transportation process, affected by factors such as sunlight and high temperature in the external environment, not all areas inside the refrigerated compartment can maintain a suitable refrigerated temperature, resulting in an uneven distribution of refrigerated temperature inside the refrigerated compartment, that is, the refrigerated temperature of a part of the interior of the refrigerated compartment is too high, which is not conducive to the storage of pre-prepared food products. To this end, the terminal identity information of the transport vehicle that delivers the pre-prepared food products that have completed the packaging process (such as the on-board terminal identity information of the transport vehicle) is obtained, and the terminal identity information is synchronously uploaded to the Internet platform. Based on the terminal identity information, the transport process of the transport vehicle is remotely located and tracked, and the refrigeration equipment of the transport vehicle is remotely monitored to obtain the transport trajectory information of the transport vehicle (i.e., the driving path trajectory information of the transport vehicle) and the working status information of the refrigeration equipment (i.e., the refrigeration working power information of the refrigeration equipment inside the transport vehicle, etc.). Based on the transport trajectory information, the ambient temperature of all areas passed by the transport vehicle during the driving process is obtained, and based on the working status information of the refrigeration equipment, the temperature information of the refrigeration compartment of the transport vehicle during the transportation of the pre-prepared food products is determined. In this way, the internal and external ambient temperatures of the refrigeration compartment can be globally identified, providing a reliable basis for the subsequent determination of the internal and external heat exchange transmission of the refrigeration compartment.

[0074] In another embodiment, the refrigerated environment abnormality identification module is used to determine abnormal refrigerated environment information of the prepared meal product during transportation based on the external environment information and the internal environment information, including:

[0075] Based on the external ambient temperature information of the pre-prepared meal product during transportation and the temperature information of the refrigerated compartment of the transportation vehicle during transportation of the pre-prepared meal product, determining the distribution information of abnormal refrigeration temperature drift areas inside the refrigerated compartment during transportation of the pre-prepared meal product, and using this as the abnormal refrigeration environment information;

[0076] The refrigeration and freshness-keeping module adjustment module is used to adjust the refrigeration and freshness-keeping mode of the refrigeration compartment where the pre-prepared food product is located based on the abnormal refrigeration environment information, including:

[0077] Based on the distribution information of the abnormal refrigeration temperature drift area, the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment are adjusted; wherein the cold air delivery parameters include the cold air delivery speed and / or the cold air delivery direction.

[0078] The beneficial effect of the above embodiment is that when the pre-prepared meal product is being transported, if the external ambient temperature of the refrigerated compartment is too high, heat from the external environment will be transferred to the interior of the refrigerated compartment, causing a temperature rise and drift in a local area of ​​the refrigerated compartment, thereby failing to provide a suitable refrigerated temperature environment for the pre-prepared meal product placed in the corresponding area. To this end, based on the external ambient temperature information of the pre-prepared meal product during transportation and the temperature information of the refrigerated compartment of the transportation vehicle during transportation of the pre-prepared meal product, the distribution information of the abnormal refrigerated temperature drift areas within the refrigerated compartment during transportation of the pre-prepared meal product is determined. The abnormal refrigerated temperature drift area distribution information may be, but is not limited to, the distribution location information of the areas within the refrigerated compartment where the temperature rise drift rate exceeds a preset rate threshold. Based on the distribution information of the abnormal refrigeration temperature drift area, the cold air delivery speed and / or cold air delivery direction of the refrigeration equipment of the transport vehicle to the refrigerated compartment is adjusted to ensure that the refrigeration equipment can accurately deliver cold air to the abnormal refrigeration temperature drift area, so that the abnormal refrigeration temperature drift area can quickly return to a refrigeration temperature suitable for the storage and preservation of pre-prepared food products.

[0079] See also Figure 2 As shown, an embodiment of the present application provides an Internet-based intelligent fresh-keeping method for pre-prepared dishes. The Internet-based intelligent fresh-keeping method for pre-prepared dishes includes:

[0080] Performing visual recognition on the pre-prepared meal packaging process of the production line to obtain packaging status information of the pre-prepared meal product; and adjusting the operating status of the pre-prepared meal packaging process based on the packaging status information;

[0081] The pre-prepared meal products that have completed the packaging process are marked with transportation attribute information and synchronized with the transportation attribute information to an Internet platform; based on the transportation attribute information, the pre-prepared meal products are remotely monitored during transportation to obtain external and internal environmental information of the pre-prepared meal products during transportation;

[0082] Based on the external environment information and the internal environment information, abnormal refrigeration environment information of the pre-prepared food product during transportation is determined; based on the abnormal refrigeration environment information, the refrigeration and preservation mode of the refrigeration compartment where the pre-prepared food product is located is adjusted.

[0083] The beneficial effects of the above embodiments are as follows: the Internet-based intelligent preservation method for pre-prepared meals performs visual identification on the pre-prepared meal packaging process of the production line, obtains the packaging status information of the pre-prepared meal products, and adjusts the operating status of the pre-prepared meal packaging process to ensure the sealing of the packaging of the pre-prepared meals, and effectively isolates the pre-prepared meals from the external environment; synchronizes the transportation attribute information of the pre-prepared meal products that have completed the packaging process to the Internet platform, thereby remotely monitoring the pre-prepared meal products during transportation, obtaining the external and internal environmental information of the pre-prepared meal products during transportation, quantifying the internal and external environmental impacts of the pre-prepared meals during transportation, and determining the abnormal refrigeration environment information of the pre-prepared meal products during transportation, thereby adjusting the refrigeration preservation mode of the refrigerated compartment where the pre-prepared meal products are located, and performing networked real-time refrigeration preservation monitoring on the transportation of the pre-prepared meals, to ensure that the pre-prepared meals are always stored in a suitable refrigerated temperature environment during the entire transportation process.

[0084] In another embodiment, visual recognition is performed on a pre-prepared meal packaging process of a production line to obtain packaging status information of the pre-prepared meal product; and based on the packaging status information, an operation status of the pre-prepared meal packaging process is adjusted, including:

[0085] Perform binocular photography of the spatial area corresponding to the pre-prepared meal packaging process of the production line to obtain a binocular image of the corresponding spatial area; generate a three-dimensional image of the spatial area based on the binocular parallax of the binocular image of the spatial area; perform pixel contour recognition on the three-dimensional image of the spatial area to obtain contour feature information of the packaging part of the pre-prepared meal product;

[0086] Based on the contour feature information of the packaging part, the coverage status information of the packaging part of the pre-prepared food product is determined; wherein, the coverage status information includes the coverage range information and coverage fit tightness information of the packaging part on the pre-prepared food; and then based on the coverage status information, the coverage position and / or the wrapping action strength of the packaging part of the pre-prepared food product in the pre-prepared food packaging process is adjusted.

[0087] The beneficial effect of the above embodiment is that the pre-prepared food products need to be effectively sealed and packaged to avoid contact between the pre-prepared food and the external environment, thereby reducing the rate of deterioration of the pre-prepared food. For this reason, in the process of producing pre-prepared food, it is necessary to comprehensively and accurately control the pre-prepared food packaging process so that the packaging parts such as plastic wrap can fully seal and cover the pre-prepared food. For this reason, binocular photography and conversion are performed on the spatial area where the pre-prepared food packaging process of the production line is located to obtain a three-dimensional image of the corresponding spatial area, so that the three-dimensional image of the spatial area can refine the contour feature information of the packaging part of the pre-prepared food product (i.e., the contour feature information of the plastic wrap), which is convenient for subsequent accurate judgment of whether the packaging part fully seals and covers the pre-prepared food. In addition, based on the contour feature information of the packaging part, the coverage range information and coverage tightness information of the packaging part of the pre-prepared food product on the pre-prepared food are determined, so that the uncovered area range of the packaging part on the pre-prepared food product and the area range where there is a gap with the pre-prepared food product can be fully calibrated. Based on the coverage status information, the pre-prepared meal packaging process adjusts the covering position and / or wrapping force of the packaging part of the pre-prepared meal product, so that the pre-prepared meal packaging process can perform a full-range tight coverage packaging operation on the pre-prepared meal, effectively isolating the pre-prepared meal from the external environment, and preventing air and water vapor from the external environment from entering the pre-prepared meal.

[0088] In another embodiment, transport attribute information is identified for the pre-prepared meal product that has completed the packaging process, and the transport attribute information is synchronized to an internet platform. Based on the transport attribute information, the pre-prepared meal product is remotely monitored during transportation to obtain external and internal environmental information of the pre-prepared meal product during transportation, including:

[0089] Obtain the terminal identity information of the transportation vehicle that delivers the pre-packaged meal products, and simultaneously upload the terminal identity information to the Internet platform;

[0090] Based on the terminal identity information, the transportation process of the transportation vehicle is remotely located and tracked, and the refrigeration equipment of the transportation vehicle is remotely monitored to obtain the transportation trajectory information of the transportation vehicle and the working status information of the refrigeration equipment; based on the transportation trajectory information, the external environmental temperature information of the pre-prepared food product during the transportation process is determined as the external environmental information; based on the working status information of the refrigeration equipment, the temperature information of the refrigerated compartment of the transportation vehicle during the transportation of the pre-prepared food product is determined as the internal environmental information.

[0091] The beneficial effect of the above embodiment is that after the pre-prepared food products have completed the packaging process, they need to be transported by logistics, so as to be delivered to the corresponding area. During the logistics transportation of pre-prepared food products, a transportation vehicle with a refrigerated compartment is usually used to store the pre-prepared food products in the refrigerated compartment to ensure that the pre-prepared food products are in a suitable refrigerated temperature environment throughout the logistics transportation process. However, during the actual logistics transportation process, affected by factors such as sunlight and high temperature in the external environment, not all areas inside the refrigerated compartment can maintain a suitable refrigerated temperature, resulting in an uneven distribution of refrigerated temperature inside the refrigerated compartment, that is, the refrigerated temperature of a part of the interior of the refrigerated compartment is too high, which is not conducive to the storage of pre-prepared food products. To this end, the terminal identity information of the transport vehicle that delivers the pre-prepared food products that have completed the packaging process (such as the on-board terminal identity information of the transport vehicle) is obtained, and the terminal identity information is synchronously uploaded to the Internet platform. Based on the terminal identity information, the transport process of the transport vehicle is remotely located and tracked, and the refrigeration equipment of the transport vehicle is remotely monitored to obtain the transport trajectory information of the transport vehicle (i.e., the driving path trajectory information of the transport vehicle) and the working status information of the refrigeration equipment (i.e., the refrigeration working power information of the refrigeration equipment inside the transport vehicle, etc.). Based on the transport trajectory information, the ambient temperature of all areas passed by the transport vehicle during the driving process is obtained, and based on the working status information of the refrigeration equipment, the temperature information of the refrigeration compartment of the transport vehicle during the transportation of the pre-prepared food products is determined. In this way, the internal and external ambient temperatures of the refrigeration compartment can be globally identified, providing a reliable basis for the subsequent determination of the internal and external heat exchange transmission of the refrigeration compartment.

[0092] In another embodiment, determining abnormal refrigeration environment information of the pre-prepared meal product during transportation based on the external environmental information and the internal environmental information; and adjusting the refrigeration and freshness preservation mode of the refrigerated compartment where the pre-prepared meal product is located based on the abnormal refrigeration environment information, including:

[0093] Based on the external ambient temperature information of the pre-prepared meal product during transportation and the temperature information of the refrigerated compartment of the transportation vehicle during transportation of the pre-prepared meal product, determining the distribution information of abnormal refrigeration temperature drift areas inside the refrigerated compartment during transportation of the pre-prepared meal product, and using this as the abnormal refrigeration environment information;

[0094] Based on the distribution information of the abnormal refrigeration temperature drift area, the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment are adjusted; wherein the cold air delivery parameters include the cold air delivery speed and / or the cold air delivery direction.

[0095] The beneficial effect of the above embodiment is that when the pre-prepared meal product is being transported, if the external ambient temperature of the refrigerated compartment is too high, heat from the external environment will be transferred to the interior of the refrigerated compartment, causing a temperature rise and drift in a local area of ​​the refrigerated compartment, thereby failing to provide a suitable refrigerated temperature environment for the pre-prepared meal product placed in the corresponding area. To this end, based on the external ambient temperature information of the pre-prepared meal product during transportation and the temperature information of the refrigerated compartment of the transportation vehicle during transportation of the pre-prepared meal product, the distribution information of the abnormal refrigerated temperature drift areas within the refrigerated compartment during transportation of the pre-prepared meal product is determined. The abnormal refrigerated temperature drift area distribution information may be, but is not limited to, the distribution location information of the areas within the refrigerated compartment where the temperature rise drift rate exceeds a preset rate threshold. Based on the distribution information of the abnormal refrigeration temperature drift area, the cold air delivery speed and / or cold air delivery direction of the refrigeration equipment of the transport vehicle to the refrigerated compartment is adjusted to ensure that the refrigeration equipment can accurately deliver cold air to the abnormal refrigeration temperature drift area, so that the abnormal refrigeration temperature drift area can quickly return to a refrigeration temperature suitable for the storage and preservation of pre-prepared food products.

[0096] In another embodiment, adjusting the cold air delivery parameters of the refrigeration equipment of the transport vehicle to the refrigerated compartment based on the distribution information of the abnormal refrigeration temperature drift area includes:

[0097] Step S1: Assume that there are n temperature detection points in the refrigerated compartment. At time t, the value of the i-th temperature detection point is T it , then at time t, the temperature variance in the refrigerated compartment is:

[0098]

[0099] In the above formula (1), V(t) is the temperature variance in the cold storage compartment at time t, and i is the number of the temperature monitoring point, which is an integer greater than or equal to 1 and less than or equal to n. Calculating the temperature variance in the cold storage compartment based on the conditions of each temperature monitoring point is of great significance for evaluating the uniformity of temperature distribution in the cold storage space. At the same time, by monitoring the temperature variance, the cold storage environment can be better controlled to ensure that the food maintains the best quality during storage and transportation.

[0100] Step S2: Set the preset temperature of the i-th monitoring point to T l , then the temperature excursion score in the refrigerated compartment at time t is:

[0101]

[0102] In the above formula (2), F(t) is the temperature deviation score in the cold storage at time t, w iis the weight coefficient of the i-th monitoring point; this quantifies the degree of deviation between the monitoring point temperature and the preset temperature. The greater the deviation, the higher the score, indicating a more serious anomaly. This provides a data basis for quickly discovering abnormal conditions in cold storage warehouses.

[0103] Step S3: Determine the quantitative score of the distribution information of the abnormal refrigeration temperature drift area based on the calculation results of the above steps S1 and S2.

[0104]

[0105] In the above formula (3), D is the quantitative score of the distribution information of the abnormal area of ​​refrigerated temperature drift, t0 and t n are the start and end times of the scoring period, respectively; a is the temperature offset scoring weight coefficient; b is the temperature variance weight coefficient; both a and b are greater than 0 and less than 1, and their sum is 1;

[0106] When D is greater than the preset value, it indicates that the corresponding area belongs to the abnormal refrigeration temperature drift area, and at this time it is necessary to adjust the cold air delivery parameters of the refrigeration equipment of the transport vehicle to the refrigerated compartment; otherwise, it indicates that the corresponding area does not belong to the abnormal refrigeration temperature drift area, and at this time it is not necessary to adjust the cold air delivery parameters of the refrigeration equipment of the transport vehicle to the refrigerated compartment.

[0107] The beneficial effects of the above-mentioned embodiments are as follows: since the refrigeration temperature is affected by a variety of factors, including ambient temperature, the insulation performance of the refrigeration compartment, and the operating efficiency of the refrigeration equipment, these factors interact with each other, increasing the complexity of temperature control. However, refrigeration temperature is crucial to the preservation, safety, and quality of food. If the distribution information of the abnormal refrigeration temperature drift area cannot be accurately controlled, and the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigeration compartment cannot be adjusted, it may lead to excessive growth and reproduction of microorganisms and increased activity of enzymes in food, greatly increasing the risk of food spoilage and even causing the production of harmful substances in food, resulting in food safety accidents. Based on the temperature variance and temperature offset in the refrigeration compartment, it is accurately determined whether the target refrigeration compartment area is an abnormal refrigeration temperature drift area, avoiding the occurrence of excessive growth and reproduction of microorganisms, increased activity of enzymes in food, causing the production of harmful substances in food, and food safety accidents due to the failure to accurately control the distribution information of the abnormal refrigeration temperature drift area.

[0108] In general, the Internet-based intelligent preservation system and method for pre-prepared meals visually identifies the pre-prepared meal packaging process of the production line and obtains the packaging status information of the pre-prepared meal products, thereby adjusting the operating status of the pre-prepared meal packaging process, ensuring the sealing of the pre-prepared meal packaging, and effectively isolating the pre-prepared meal from the external environment; the transportation attribute information of the pre-prepared meal products that have completed the packaging process is synchronized to the Internet platform, thereby remotely monitoring the pre-prepared meal products during transportation, obtaining the external and internal environmental information of the pre-prepared meal products during transportation, quantifying the internal and external environmental impacts of the pre-prepared meal during transportation, and determining the abnormal refrigeration environment information of the pre-prepared meal products during transportation, thereby adjusting the refrigeration preservation mode of the refrigerated compartment where the pre-prepared meal products are located, and performing networked real-time refrigeration preservation monitoring of the transportation of pre-prepared meals, to ensure that the pre-prepared meals are always stored in a suitable refrigerated temperature environment throughout the entire transportation process.

[0109] The above is only a specific embodiment of the present invention, and any other improvements made based on the concept of the present invention are considered to be within the protection scope of the present invention.

Claims

1. An Internet-based intelligent fresh-keeping system for pre-prepared dishes, characterized in that: include: The pre-prepared food sealing defect recognition module is used to visually identify the pre-prepared food packaging process of the production line and obtain the packaging status information of the pre-prepared food products; a packaging process operation adjustment module, configured to adjust the operation state of the pre-prepared meal packaging process based on the packaging state information; An Internet information synchronization module is used to identify the transport attribute information of the pre-prepared food products that have completed the packaging process and synchronize the transport attribute information to the Internet platform; a transport remote monitoring module, configured to remotely monitor the pre-prepared meal product during transport based on the transport attribute information, and obtain external and internal environmental information of the pre-prepared meal product during transport; a refrigerated environment abnormality identification module, configured to determine abnormal refrigerated environment information of the pre-prepared meal product during transportation based on the external environment information and the internal environment information; A refrigeration and freshness-keeping module adjustment module, configured to adjust the refrigeration and freshness-keeping mode of the refrigeration compartment where the pre-prepared food product is located based on the abnormal refrigeration environment information; The pre-prepared food sealing defect recognition module is used to visually identify the pre-prepared food packaging process of the production line to obtain packaging status information of the pre-prepared food products, including: Perform binocular photography of a spatial area corresponding to the pre-prepared meal packaging process of a production line to obtain a binocular image of the corresponding spatial area; generate a three-dimensional image of the spatial area based on the binocular parallax of the binocular image of the spatial area; perform pixel contour recognition on the three-dimensional image of the spatial area to obtain contour feature information of the packaging portion of the pre-prepared meal product; The packaging process operation adjustment module is used to adjust the operation state of the pre-prepared meal packaging process based on the packaging state information, including: Based on the contour feature information of the packaging portion, determining coverage status information of the packaging portion of the pre-prepared meal product; wherein the coverage status information includes coverage range information and coverage tightness information of the packaging portion on the pre-prepared meal; and then, based on the coverage status information, adjusting the coverage position and / or wrapping force of the packaging portion of the pre-prepared meal product in the pre-prepared meal packaging process; The refrigerated environment abnormality identification module is used to determine abnormal refrigerated environment information of the pre-prepared meal product during transportation based on the external environment information and the internal environment information, including: Based on external environmental temperature information of the pre-prepared meal product during transportation and temperature information of a refrigerated compartment of a transportation vehicle during transportation of the pre-prepared meal product, determining distribution information of abnormal refrigerated temperature drift areas inside the refrigerated compartment during transportation of the pre-prepared meal product, and using this as the refrigerated environment abnormality information; The refrigeration and freshness-keeping module adjustment module is used to adjust the refrigeration and freshness-keeping mode of the refrigeration compartment where the pre-prepared food products are located based on the refrigeration environment abnormality information, including: Based on the distribution information of the abnormal refrigeration temperature drift area, adjusting the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment; wherein the cold air delivery parameters include cold air delivery speed and / or cold air delivery direction; Adjusting the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment based on the distribution information of the abnormal refrigeration temperature drift area includes: Step S1: Assume that there are n temperature detection points in the refrigerated compartment. At time t, the value of the i-th temperature detection point is , then at time t, the temperature variance in the refrigerated compartment is: （1） In the above formula (1), is the temperature variance in the cold storage at time t, i is the number of the temperature monitoring point, which is an integer greater than or equal to 1 and less than or equal to n; Step S2: Set the preset temperature of the i-th monitoring point to , then the temperature excursion score in the refrigerated compartment at time t is: （2） In the above formula (2), is the temperature excursion score in the cold storage at time t, is the weight coefficient of the i-th monitoring point; Step S3: Determine the quantitative score of the distribution information of the abnormal refrigeration temperature drift area based on the calculation results of the above steps S1 and S2. （3） In the above formula (3), It is a quantitative score for the distribution information of abnormal cold storage temperature drift areas. and are the start and end times of the scoring period, respectively; a is the temperature offset scoring weight coefficient; b is the temperature variance weight coefficient; both a and b are greater than 0 and less than 1, and their sum is 1; When D is greater than the preset value, it indicates that the corresponding area belongs to the abnormal refrigeration temperature drift area, and at this time it is necessary to adjust the cold air delivery parameters of the refrigeration equipment of the transport vehicle to the refrigerated compartment; otherwise, it indicates that the corresponding area does not belong to the abnormal refrigeration temperature drift area, and at this time it is not necessary to adjust the cold air delivery parameters of the refrigeration equipment of the transport vehicle to the refrigerated compartment.

2. The Internet-based intelligent fresh-keeping system for prepared meals according to claim 1, characterized in that: The Internet information synchronization module is used to identify the transport attribute information of the pre-prepared food products that have completed the packaging process and synchronize the transport attribute information to the Internet platform, including: Obtaining the terminal identity information of the transportation vehicle that delivers the pre-packaged meal product, and synchronously uploading the terminal identity information to the Internet platform; The transport remote monitoring module is used to remotely monitor the pre-prepared meal product during transportation based on the transport attribute information, and obtain external and internal environmental information of the pre-prepared meal product during transportation, including: Based on the terminal identity information, the transportation process of the transportation vehicle is remotely located and tracked, and the refrigeration equipment of the transportation vehicle is remotely monitored to obtain the transportation trajectory information of the transportation vehicle and the working status information of the refrigeration equipment; based on the transportation trajectory information, the external environmental temperature information of the pre-prepared food product during the transportation process is determined as the external environmental information; based on the working status information of the refrigeration equipment, the temperature information of the refrigerated compartment of the transportation vehicle during the transportation of the pre-prepared food product is determined as the internal environmental information.

3. An Internet-based intelligent fresh-keeping method for pre-prepared dishes, using the Internet-based intelligent fresh-keeping system for pre-prepared dishes according to any one of claims 1-2, characterized in that: include: Perform visual recognition of the pre-prepared meal packaging process on the production line to obtain packaging status information of pre-prepared meal products; Adjusting the operating state of the pre-prepared meal packaging process based on the packaging state information; Marking the transport attribute information of the pre-prepared food products that have completed the packaging process, and synchronizing the transport attribute information to the Internet platform; Based on the transportation attribute information, remotely monitor the pre-prepared meal product during transportation to obtain external and internal environmental information of the pre-prepared meal product during transportation; Determining abnormal refrigeration environment information of the pre-prepared meal product during transportation based on the external environment information and the internal environment information; Based on the abnormal refrigeration environment information, adjusting the refrigeration and freshness preservation mode of the refrigeration compartment where the prepared food product is located; Perform visual recognition of the pre-prepared meal packaging process on the production line to obtain packaging status information of pre-prepared meal products; Adjusting the operating state of the pre-prepared meal packaging process based on the packaging state information includes: Perform binocular photography of a spatial area corresponding to the pre-prepared meal packaging process of a production line to obtain a binocular image of the corresponding spatial area; generate a three-dimensional image of the spatial area based on the binocular parallax of the binocular image of the spatial area; perform pixel contour recognition on the three-dimensional image of the spatial area to obtain contour feature information of the packaging portion of the pre-prepared meal product; Based on the contour feature information of the packaging part, the coverage status information of the packaging part of the pre-prepared food product is determined; wherein, the coverage status information includes the coverage range information and coverage fit tightness information of the packaging part on the pre-prepared food; and then based on the coverage status information, the coverage position and / or winding action strength of the packaging part of the pre-prepared food product in the pre-prepared food packaging process is adjusted.

4. The method for pre-prepared food preservation based on the Internet as claimed in claim 3, characterized in that: The pre-prepared meal products that have completed the packaging process are marked with transportation attribute information, and the transportation attribute information is synchronized to an Internet platform; based on the transportation attribute information, the pre-prepared meal products are remotely monitored during transportation to obtain external and internal environmental information of the pre-prepared meal products during transportation, including: Obtaining the terminal identity information of the transportation vehicle that delivers the pre-packaged meal product, and synchronously uploading the terminal identity information to the Internet platform; Based on the terminal identity information, the transportation process of the transportation vehicle is remotely located and tracked, and the refrigeration equipment of the transportation vehicle is remotely monitored to obtain the transportation trajectory information of the transportation vehicle and the working status information of the refrigeration equipment; based on the transportation trajectory information, the external environmental temperature information of the pre-prepared food product during the transportation process is determined as the external environmental information; based on the working status information of the refrigeration equipment, the temperature information of the refrigerated compartment of the transportation vehicle during the transportation of the pre-prepared food product is determined as the internal environmental information.

5. The method for pre-prepared food preservation based on the Internet as claimed in claim 4, characterized in that: Determining abnormal refrigeration environment information of the pre-prepared meal product during transportation based on the external environment information and the internal environment information; Based on the abnormal refrigeration environment information, adjusting the refrigeration and freshness preservation mode of the refrigeration compartment where the prepared meal product is located includes: Based on external environmental temperature information of the pre-prepared meal product during transportation and temperature information of a refrigerated compartment of the transportation vehicle during transportation of the pre-prepared meal product, determining distribution information of abnormal refrigeration temperature drift areas inside the refrigerated compartment during transportation of the pre-prepared meal product, and using this as the refrigerated environment abnormality information; Based on the distribution information of the abnormal refrigeration temperature drift area, the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment are adjusted; wherein the cold air delivery parameters include cold air delivery speed and / or cold air delivery direction.

6. The method for pre-prepared food preservation based on the Internet as claimed in claim 5, characterized in that: Adjusting the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment based on the distribution information of the abnormal refrigeration temperature drift area includes: Step S1: Assume that there are n temperature detection points in the refrigerated compartment. At time t, the value of the i-th temperature detection point is , then at time t, the temperature variance in the refrigerated compartment is: （1） In the above formula (1), is the temperature variance in the cold storage at time t, i is the number of the temperature monitoring point, which is an integer greater than or equal to 1 and less than or equal to n; Step S2: Set the preset temperature of the i-th monitoring point to , then the temperature excursion score in the refrigerated compartment at time t is: （2） In the above formula (2), is the temperature excursion score in the cold storage at time t, is the weight coefficient of the i-th monitoring point; Step S3: Determine the quantitative score of the distribution information of the abnormal refrigeration temperature drift area based on the calculation results of the above steps S1 and S2. （3） In the above formula (3), It is a quantitative score for the distribution information of abnormal cold storage temperature drift areas. and are the start and end times of the scoring period, respectively; a is the temperature offset scoring weight coefficient; b is the temperature variance weight coefficient; both a and b are greater than 0 and less than 1, and their sum is 1; When D is greater than the preset value, it indicates that the corresponding area belongs to the abnormal refrigeration temperature drift area, and at this time it is necessary to adjust the cold air delivery parameters of the refrigeration equipment of the transport vehicle to the refrigerated compartment; otherwise, it indicates that the corresponding area does not belong to the abnormal refrigeration temperature drift area, and at this time it is not necessary to adjust the cold air delivery parameters of the refrigeration equipment of the transport vehicle to the refrigerated compartment.

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