Internet-based intelligent fresh-keeping system and method for prefabricated dishes

Abstract

According to the intelligent preservation system and method for the prefabricated dishes based on the Internet, visual recognition is conducted on the prefabricated dish packaging procedure of a production line, the packaging state information of prefabricated dish products is obtained, and therefore the operation state of the prefabricated dish packaging procedure is adjusted, and the packaging sealing performance of the prefabricated dishes is ensured; and the transportation attribute information of the prefabricated dish product subjected to the packaging process is synchronized to an internet platform, so that remote monitoring is performed on the prefabricated dish product in the transportation process, external environment information and internal environment information of the prefabricated dish product in the transportation process are obtained, and quantitative determination is performed on internal and external environment influences of the prefabricated dish product in the transportation process. According to the method, the refrigeration environment abnormal information of the prefabricated vegetable product in the transportation process is determined, so that the refrigeration and fresh-keeping mode of the refrigeration cabin where the prefabricated vegetable product is located is adjusted, networked real-time refrigeration and fresh-keeping monitoring is carried out on the transportation of the prefabricated vegetable, and it is ensured that the prefabricated vegetable is always stored in a proper refrigeration temperature environment in the whole transportation process.

Description

Technical Field

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

[0002] As a semi-finished food, pre-prepared meals have the characteristics of convenient secondary processing and high cost performance, and have already occupied a certain share in the food market. The food safety of pre-prepared meals, especially imported and exported pre-prepared meals, has always been a key concern of consumers. For this reason, pre-prepared meal manufacturers ensure the food safety of pre-prepared meals by tracing the production of pre-prepared meal products and increasing quality control. In the actual production process, the logistics and transportation of pre-prepared meal products is also an important link in ensuring food safety. In many cases, pre-prepared meal products do not obtain the appropriate refrigerated storage temperature during transportation, causing the pre-prepared meal products to deteriorate. In addition, the repeated refrigeration and thawing process of pre-prepared meal products will lead to a large number of bacterial growth, thereby reducing the safety of pre-prepared meal products. For this reason, networked real-time refrigeration and fresh-keeping monitoring is required during the transportation of pre-prepared meal products to ensure that the pre-prepared meal products are always stored in a suitable refrigerated temperature environment during the entire transportation process. Summary of the invention

[0003] The object of the present invention is to provide an Internet-based intelligent fresh-keeping system and method for pre-prepared dishes, which visually identifies the pre-prepared dish packaging process of the production line and obtains the packaging status information of the pre-prepared dish products, thereby adjusting the operating status of the pre-prepared dish packaging process, ensuring the sealing of the packaging of the pre-prepared dishes, and achieving effective isolation of the pre-prepared dishes from the external environment; the transportation attribute information of the pre-prepared dish products that have completed the packaging process is synchronized to the Internet platform, thereby remotely monitoring the pre-prepared dish products during transportation, obtaining the external environment information and internal environment information of the pre-prepared dish products during transportation, quantifying the internal and external environmental impacts of the pre-prepared dishes during transportation, and determining the abnormal refrigeration environment information of the pre-prepared dish products during transportation, thereby adjusting the refrigeration preservation mode of the refrigerated compartment where the pre-prepared dish products are located, and performing networked real-time refrigeration preservation monitoring on the transportation of the pre-prepared dishes, thereby ensuring that the pre-prepared dishes are 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 pre-prepared food, 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, used to adjust the operation state of the pre-prepared food 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, used to remotely monitor the prepared food product during transportation based on the transport attribute information, and obtain external and internal environmental information of the prepared food product during transportation;

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

[0011] The refrigeration and fresh-keeping module adjustment module is used to adjust the refrigeration and fresh-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 food sealing defect recognition module is used to visually recognize the pre-prepared food packaging process of the production line to obtain packaging status information of the pre-prepared food product, including:

[0013] Perform binocular photography on the spatial area corresponding to the pre-prepared food 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 food product;

[0014] The packaging process operation adjustment module is used to adjust the operation state of the pre-prepared food 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 the coverage fit tightness information of the packaging part on the pre-prepared food; and 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.

[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-prepared food products that have completed the packaging process, and synchronously uploading the terminal identity information to the Internet platform;

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

[0021] Based on the external environment temperature information of the pre-prepared food product during transportation and the temperature information of the refrigerated compartment of the transportation vehicle during transportation of the pre-prepared food product, determining the abnormal area distribution information of the refrigerated temperature drift inside the refrigerated compartment during transportation of the pre-prepared food product, and using this as the abnormal refrigerated environment information;

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

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

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

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

[0026] Marking the transport attribute information of the pre-prepared food product that has completed the packaging process, and synchronizing the transport attribute information to the Internet platform; based on the transport attribute information, remotely monitoring the pre-prepared food product during transportation, and obtaining the external environment information and internal environment information of the pre-prepared food product during transportation;

[0027] 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.

[0028] Optionally, visually identifying the pre-prepared food packaging process of the production line to obtain packaging status information of the pre-prepared food product; and adjusting the operating state of the pre-prepared food packaging process based on the packaging status information includes:

[0029] Perform binocular photography on the spatial area corresponding to the pre-prepared food 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 food 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 the coverage fit tightness information of the packaging part on the pre-prepared food; and 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.

[0031] Optionally, the pre-prepared food product that has completed the packaging process is 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 food product is remotely monitored during transportation to obtain external and internal environmental information of the pre-prepared food product during transportation, including:

[0032] Obtaining the terminal identity information of the transportation vehicle that delivers the pre-prepared food products that have completed the packaging process, 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, based on the external environment information and the internal environment information, determining abnormal refrigeration environment information of the pre-prepared food product during transportation; and based on the abnormal refrigeration environment information, adjusting a refrigeration and fresh-keeping mode of a refrigerated compartment where the pre-prepared food product is located, comprising:

[0035] Based on the external environment temperature information of the pre-prepared food product during transportation and the temperature information of the refrigerated compartment of the transportation vehicle during transportation of the pre-prepared food product, determining the abnormal area distribution information of the refrigerated temperature drift inside the refrigerated compartment during transportation of the pre-prepared food product, and using this as the abnormal refrigerated environment information;

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

[0037] Optionally, based on the abnormal refrigeration temperature drift area distribution information, adjusting the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigeration 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, based on the calculation results of the above steps S1 and S2, determine the quantitative score of the distribution information of the abnormal area of ​​refrigerated temperature drift,

[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 time of the scoring period, respectively; a is the temperature offset scoring weight coefficient; b is the temperature variance weight coefficient; a and b are both 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 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 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 fresh-keeping system and method for pre-prepared meals, which visually identifies the pre-prepared meal packaging process of a production line, obtains 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 meal, and effectively isolates 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 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 abnormal refrigeration environment information of the pre-prepared meal products during transportation, thereby adjusting the refrigeration and fresh-keeping mode of the refrigerated compartment where the pre-prepared meal products are located, and performing networked real-time refrigeration and fresh-keeping 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 during 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 use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0051] Figure 1 A schematic structural diagram of an Internet-based intelligent fresh-keeping system for prepared dishes provided by the present invention.

[0052] Figure 2 A schematic diagram of a process flow of an Internet-based intelligent fresh-keeping method for pre-prepared dishes provided by the present invention. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned purposes, 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 is to 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 structures related to the present application are shown in the accompanying drawings, rather than all structures. 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] The terms "including" and "having" and any variations thereof in this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products or devices.

[0055] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood 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 food. The Internet-based intelligent fresh-keeping system for pre-prepared food 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, used to adjust the operation state of the pre-prepared food 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, for remotely monitoring the pre-prepared food product during transport based on the transport attribute information, and obtaining external and internal environmental information of the pre-prepared food product during transport;

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

[0062] The refrigeration and fresh-keeping module adjustment module is used to adjust the refrigeration and fresh-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 as follows: the Internet-based intelligent fresh-keeping system 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 accordingly, ensures 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, obtains the external and internal environmental information of the pre-prepared meal products during transportation, quantifies the internal and external environmental impacts of the pre-prepared meals during transportation, and determines the abnormal refrigeration environment information of the pre-prepared meal products during transportation, thereby adjusting the refrigeration and fresh-keeping mode of the refrigerated compartment where the pre-prepared meal products are located, and performs networked real-time refrigeration and fresh-keeping monitoring of 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.

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

[0065] Perform binocular photography on the spatial area corresponding to the pre-prepared food packaging process of the production line to obtain the corresponding binocular image of the 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 food product;

[0066] The packaging process operation adjustment module is used to adjust the operation state of the pre-prepared food 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 the coverage fit tightness information of the packaging part on the pre-prepared food; and based on the coverage status information, the coverage position and / or the strength of the wrapping action of the packaging part of the pre-prepared food product by the pre-prepared food packaging process is adjusted.

[0068] The beneficial effect of the above-mentioned 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 deterioration rate 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 shooting and conversion are performed on the spatial area where the pre-prepared food packaging process of the production line is located to obtain a corresponding three-dimensional image of the 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 fit 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 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:

[0070] Obtain the terminal identity information of the transportation vehicle that delivers the pre-prepared food products that have completed the packaging process, and synchronously upload the terminal identity information to the Internet platform;

[0071] The transport remote monitoring module is used to remotely monitor the pre-prepared food product during the transport process based on the transport attribute information, and obtain the external environment information and internal environment information of the pre-prepared food product during the transport process, 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-mentioned 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. In the process of logistics transportation of pre-prepared food products, a transportation tool with a refrigerated cabin is usually used to store the pre-prepared food products in the refrigerated cabin, ensuring that the pre-prepared food products are in a suitable refrigerated temperature environment during the entire logistics transportation process. However, in the actual logistics transportation process, affected by factors such as sunlight and high temperature in the external environment, not all areas inside the refrigerated cabin can maintain a suitable refrigerated temperature, resulting in an uneven distribution of refrigerated temperature inside the refrigerated cabin, that is, the refrigerated temperature of a part of the refrigerated cabin is too high and 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 transportation process of the transport vehicle is remotely located and tracked, and the refrigeration equipment of the transport vehicle is remotely monitored to obtain the transportation 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 transportation trajectory information, the ambient temperature of all regions 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, so that 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 the refrigerated environment abnormality information of the pre-prepared food product during transportation based on the external environment information and the internal environment information, including:

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

[0076] The refrigeration and fresh-keeping module adjustment module is used to adjust the refrigeration and fresh-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 food product is in the process of transportation, if the external environment temperature of the refrigerated compartment is too high, the heat from the external environment will be transmitted to the inside of the refrigerated compartment, causing the temperature of the local area inside the refrigerated compartment to rise and drift, and thus failing to provide a suitable refrigerated temperature environment for the pre-prepared food product placed in the corresponding area. To this end, based on the external environment temperature information of the pre-prepared food product in the process of transportation and the refrigerated compartment temperature information of the transportation vehicle during the transportation of the pre-prepared food product, the abnormal refrigerated temperature drift regional distribution information inside the refrigerated compartment of the pre-prepared food product in the process of transportation is determined, and the abnormal refrigerated temperature drift regional distribution information can be but is not limited to the regional distribution position information of the temperature rise drift rate inside the refrigerated compartment exceeding the 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] Visually identify the pre-prepared food packaging process of the production line to obtain packaging status information of the pre-prepared food product; and adjust the operating state of the pre-prepared food packaging process based on the packaging status information;

[0081] The transport attribute information of the pre-prepared food product that has completed the packaging process is marked, and the transport attribute information is synchronized to the Internet platform; based on the transport attribute information, the pre-prepared food product is remotely monitored during the transportation process to obtain the external environment information and internal environment information of the pre-prepared food product during the transportation process;

[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 to obtain 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 packaging of the pre-prepared meals, and achieving effective isolation of the pre-prepared meals 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 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.

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

[0085] Perform binocular photography on the spatial area corresponding to the pre-prepared food packaging process of the production line to obtain the corresponding binocular image of the 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 food 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 the coverage fit tightness information of the packaging part on the pre-prepared food; and based on the coverage status information, the coverage position and / or the strength of the wrapping action of the packaging part of the pre-prepared food product by the pre-prepared food packaging process is adjusted.

[0087] The beneficial effect of the above-mentioned 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 deterioration rate 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 shooting and conversion are performed on the spatial area where the pre-prepared food packaging process of the production line is located to obtain a corresponding three-dimensional image of the 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 fit 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, the transport attribute information of the pre-prepared food product that has completed the packaging process is marked, and the transport attribute information is synchronized to an Internet platform; based on the transport attribute information, the pre-prepared food product is remotely monitored during transportation to obtain external and internal environmental information of the pre-prepared food product during transportation, including:

[0089] Obtain the terminal identity information of the transportation vehicle that delivers the pre-prepared food products that have completed the packaging process, and synchronously 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-mentioned 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. In the process of logistics transportation of pre-prepared food products, a transportation tool with a refrigerated cabin is usually used to store the pre-prepared food products in the refrigerated cabin, ensuring that the pre-prepared food products are in a suitable refrigerated temperature environment during the entire logistics transportation process. However, in the actual logistics transportation process, affected by factors such as sunlight and high temperature in the external environment, not all areas inside the refrigerated cabin can maintain a suitable refrigerated temperature, resulting in an uneven distribution of refrigerated temperature inside the refrigerated cabin, that is, the refrigerated temperature of a part of the refrigerated cabin is too high and 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 transportation process of the transport vehicle is remotely located and tracked, and the refrigeration equipment of the transport vehicle is remotely monitored to obtain the transportation 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 transportation trajectory information, the ambient temperature of all regions 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, so that 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, based on the external environment information and the internal environment information, determining abnormal refrigeration environment information of the pre-prepared food product during transportation; and adjusting the refrigeration and fresh-keeping mode of the refrigerated compartment where the pre-prepared food product is located based on the abnormal refrigeration environment information, including:

[0093] Based on the external environment temperature information of the pre-prepared food product during transportation and the temperature information of the refrigerated compartment of the transportation vehicle during transportation of the pre-prepared food product, determining the abnormal area distribution information of the refrigerated temperature drift inside the refrigerated compartment during transportation of the pre-prepared food product, and using this as the abnormal refrigerated 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 food product is in the process of transportation, if the external environment temperature of the refrigerated compartment is too high, the heat from the external environment will be transmitted to the inside of the refrigerated compartment, causing the temperature of the local area inside the refrigerated compartment to rise and drift, and thus failing to provide a suitable refrigerated temperature environment for the pre-prepared food product placed in the corresponding area. To this end, based on the external environment temperature information of the pre-prepared food product in the process of transportation and the refrigerated compartment temperature information of the transportation vehicle during the transportation of the pre-prepared food product, the abnormal refrigerated temperature drift regional distribution information inside the refrigerated compartment of the pre-prepared food product in the process of transportation is determined, and the abnormal refrigerated temperature drift regional distribution information can be but is not limited to the regional distribution position information of the temperature rise drift rate inside the refrigerated compartment exceeding the 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, based on the abnormal refrigeration temperature drift area distribution information, adjusting the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigeration compartment 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. In this way, the temperature variance in the cold storage compartment is calculated according to the conditions of each temperature monitoring point, which 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 that the abnormality is more serious, which provides a data basis for quickly discovering abnormal conditions in the cold storage warehouse;

[0103] Step S3, based on the calculation results of the above steps S1 and S2, determine the quantitative score of the distribution information of the abnormal area of ​​refrigerated temperature drift,

[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 time of the scoring period, respectively; a is the temperature offset scoring weight coefficient; b is the temperature variance weight coefficient; a and b are both 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 embodiments are as follows: since the refrigeration temperature is affected by many factors, including the ambient temperature, the insulation performance of the refrigeration compartment, the working efficiency of the refrigeration equipment, etc., these factors interact with each other, increasing the complexity of temperature control. However, the 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 then the cold air delivery parameters of the refrigeration equipment of the transportation tool to the refrigeration compartment are adjusted, it may cause excessive growth and reproduction of microorganisms, increase the activity of enzymes in food, greatly increase the risk of food spoilage, and even cause harmful substances to be produced in food, resulting in food safety accidents, etc. According to the temperature variance and temperature offset in the refrigeration warehouse, it is accurately determined whether the target refrigeration compartment area is an abnormal refrigeration temperature drift area, avoiding the excessive growth and reproduction of microorganisms, increase the activity of enzymes in food, cause harmful substances to be produced in food, and cause food safety accidents, etc., due to the inability 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, 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 pre-prepared meal packaging and achieve effective isolation of 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 of the transportation of the pre-prepared meal, to ensure that the pre-prepared meal is always stored in a suitable refrigerated temperature environment during the entire transportation process.

[0109] The above is only a specific implementation 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 intelligent fresh-keeping system for pre-prepared food based on the Internet, 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, used to adjust the operation state of the pre-prepared food 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, used to remotely monitor the prepared food product during transportation based on the transport attribute information, and obtain external and internal environmental information of the prepared food product during transportation; A refrigerated environment abnormality identification module, used to determine abnormal refrigerated environment information of the pre-prepared food product during transportation based on the external environment information and the internal environment information; The refrigeration and fresh-keeping module adjustment module is used to adjust the refrigeration and fresh-keeping mode of the refrigeration compartment where the pre-prepared food products are located based on the abnormal refrigeration environment information.

2. The Internet-based intelligent fresh-keeping system for prepared food according to claim 1, characterized in that: The pre-prepared food sealing defect recognition module is used to visually recognize the pre-prepared food packaging process of the production line to obtain packaging status information of the pre-prepared food product, including: Perform binocular photography on the spatial area corresponding to the pre-prepared food 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 food product; The packaging process operation adjustment module is used to adjust the operation state of the pre-prepared food packaging process based on the packaging state information, including: 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 the coverage fit tightness information of the packaging part on the pre-prepared food; and 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.

3. The Internet-based intelligent fresh-keeping system for prepared food 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 product that has 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-prepared food products that have completed the packaging process, and synchronously uploading the terminal identity information to the Internet platform; The transport remote monitoring module is used to remotely monitor the prepared food product during transportation based on the transport attribute information, and obtain external environment information and internal environment information of the prepared food 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.

4. The Internet-based intelligent fresh-keeping system for prepared food according to claim 1, characterized in that: The refrigerated environment abnormality identification module is used to determine the refrigerated environment abnormality information of the pre-prepared food product during transportation based on the external environment information and the internal environment information, including: Based on the external environment temperature information of the pre-prepared food product during transportation and the temperature information of the refrigerated compartment of the transportation vehicle during transportation of the pre-prepared food product, determining the abnormal area distribution information of the refrigerated temperature drift inside the refrigerated compartment during transportation of the pre-prepared food product, and using this as the abnormal refrigerated environment information; The refrigeration and fresh-keeping module adjustment module is used to adjust the refrigeration and fresh-keeping mode of the refrigeration compartment where the pre-prepared food product is located based on the abnormal refrigeration environment information, including: Based on the abnormal refrigeration temperature drift area distribution information, adjust the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment; wherein the cold air delivery parameters include the cold air delivery speed and / or the cold air delivery direction.

5. The Internet-based intelligent fresh-keeping system for prepared food according to claim 4, characterized in that: Based on the abnormal refrigeration temperature drift area distribution information, adjusting the cold air delivery parameters of the refrigeration equipment of the transportation tool to the refrigeration compartment 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 T it , then at time t, the temperature variance in the refrigerated compartment is: 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; Step S2: Set the preset temperature of the i-th monitoring point to T i , then the temperature excursion score in the refrigerated compartment at time t is: 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; Step S3, based on the calculation results of the above steps S1 and S2, determine the quantitative score of the distribution information of the abnormal area of ​​refrigerated temperature drift, In the above formula (3), D is the quantitative score of the distribution information of abnormal cold storage temperature drift area, t0 and t n are the start time and end time of the scoring period respectively, a is the temperature offset scoring weight coefficient, b is the temperature variance weight coefficient, a and b are both 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 refrigerated temperature drift abnormal area, and at this time it is necessary to adjust the cold air delivery parameters of the refrigerated equipment of the transport vehicle to the refrigerated compartment; otherwise, it indicates that the corresponding area does not belong to the refrigerated temperature drift abnormal area, and at this time it is not necessary to adjust the cold air delivery parameters of the refrigerated equipment of the transport vehicle to the refrigerated compartment.

6. An intelligent method for pre-prepared food preservation based on the Internet, characterized in that: include: Visually identify the pre-prepared meal packaging process of the production line to obtain the packaging status information of the pre-prepared meal products; Based on the packaging status information, adjusting the operation status of the pre-prepared dish packaging process; 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 prepared food product during transportation to obtain external environment information and internal environment information of the prepared food product during transportation; Based on the external environment information and the internal environment information, determining abnormal refrigeration environment information of the pre-prepared food product during transportation; Based on the abnormal refrigeration environment information, the refrigeration and preservation mode of the refrigeration compartment where the pre-prepared food products are located is adjusted.

7. The method for pre-prepared food preservation based on the Internet according to claim 6, characterized in that: Visually identify the pre-prepared meal packaging process of the production line to obtain the packaging status information of the pre-prepared meal products; Adjusting the operation state of the pre-prepared dish packaging process based on the packaging state information includes: Perform binocular photography on the spatial area corresponding to the pre-prepared food 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 food 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 the coverage fit tightness information of the packaging part on the pre-prepared food; and 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.

8. The method for pre-prepared food preservation based on the Internet as claimed in claim 6, characterized in that: The pre-prepared food product that has completed the packaging process is marked with transportation attribute information, and the transportation attribute information is synchronized to the Internet platform; based on the transportation attribute information, the pre-prepared food product is remotely monitored during transportation to obtain external and internal environmental information of the pre-prepared food product during transportation, including: Obtaining the terminal identity information of the transportation vehicle that delivers the pre-prepared food products that have completed the packaging process, 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.

9. The method for pre-prepared food preservation based on the Internet according to claim 6, characterized in that: Based on the external environment information and the internal environment information, determining abnormal refrigeration environment information of the pre-prepared food product during transportation; Based on the abnormal refrigeration environment information, adjusting the refrigeration and fresh-keeping mode of the refrigeration compartment where the pre-prepared food product is located includes: Based on the external environment temperature information of the pre-prepared food product during transportation and the temperature information of the refrigerated compartment of the transportation vehicle during transportation of the pre-prepared food product, determining the abnormal area distribution information of the refrigerated temperature drift inside the refrigerated compartment during transportation of the pre-prepared food product, and using this as the abnormal refrigerated environment information; Based on the abnormal refrigeration temperature drift area distribution information, adjust the cold air delivery parameters of the refrigeration equipment of the transportation vehicle to the refrigerated compartment; wherein the cold air delivery parameters include the cold air delivery speed and / or the cold air delivery direction.

10. The method for pre-prepared food preservation based on the Internet according to claim 9, characterized in that: Based on the abnormal refrigeration temperature drift area distribution information, adjusting the cold air delivery parameters of the refrigeration equipment of the transportation tool to the refrigeration compartment 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 T it , then at time t, the temperature variance in the refrigerated compartment is: 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; Step S2: Set the preset temperature of the i-th monitoring point to T i , then the temperature excursion score in the refrigerated compartment at time t is: 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; Step S3, based on the calculation results of the above steps S1 and S2, determine the quantitative score of the distribution information of the abnormal area of ​​refrigerated temperature drift, 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 time of the scoring period, respectively; a is the temperature offset scoring weight coefficient, b is the temperature variance weight coefficient, a and b are both 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 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 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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