A packaging method and system for fresh keeping storage

Abstract

The present application relates to the technical field of fresh-keeping packaging, and specifically provides a packaging method and system for fresh-keeping storage, which comprises the following steps: obtaining the number of bacteria on the surface of the to-be-packaged article, determining whether to perform ultraviolet sterilization; when performing micro-freezing treatment, placing the to-be-packaged article into ice water, adding salt into the ice water according to the amount of ice water; the refrigerator performs refrigeration at an initial power, obtaining the real-time temperature of the to-be-packaged article, and determining whether to adjust the initial power; obtaining the bacterial content in the ice water, and determining whether to start the water changing device; segmenting the to-be-packaged article; collecting the volume after segmentation, completing the vacuumizing operation at the air extraction rate S0 and performing sealing; collecting image data, obtaining the bubble volume V0 in the to-be-packaged article after sealing, and determining whether the packaging is qualified. The method combines ultraviolet sterilization, micro-freezing treatment and vacuum sealing to realize the safety, freshness and quality of the to-be-packaged article during long-term storage, and improves the utilization efficiency of resources.

Description

Technical Field

[0001] This invention relates to the field of food preservation packaging technology, and more specifically, to a packaging method and system for food preservation and storage. Background Technology

[0002] Fresh meat preservation refers to the process of maintaining and preserving fresh meat products at their optimal quality within the food supply chain. The goal of preservation is to extend the shelf life of food, maintain its edible quality, and reduce the adverse effects of bacterial growth, oxidation, and spoilage. Fresh meat preservation allows producers, distributors, and retailers in the food supply chain more time to deliver food to consumers, reducing waste caused by premature food spoilage. This helps improve the utilization rate of food resources and alleviate environmental pressure.

[0003] There are some limitations to commonly used food preservation technologies. For short-term storage, vacuum processing is often used, which can extend the shelf life of food to some extent, but this method is not suitable for long-term storage needs. On the other hand, freezing is often used to extend the shelf life of food for long-term storage. However, freezing can damage the texture of the food and cannot fully meet the requirements for preservation.

[0004] Therefore, it is necessary to design a packaging method and system for preservation and storage to solve the current problems in preservation and storage technology. Summary of the Invention

[0005] In view of this, the present invention proposes a packaging method and system for preservation and storage, aiming to solve the problems of short preservation time, poor preservation effect and inability to balance preservation and long-term storage in current preservation and storage methods.

[0006] In one aspect, the present invention provides a packaging method for preservation and storage, comprising:

[0007] Obtain the number of bacterial colonies on the surface of the item to be packaged, and determine whether to perform ultraviolet sterilization on the item to be packaged based on the number of bacterial colonies; when it is determined that the item to be packaged should be sterilized with ultraviolet light, determine the sterilization time based on the number of bacterial colonies; when it is determined that the item to be packaged should not be sterilized, perform micro-freezing treatment on the item to be packaged.

[0008] When performing micro-freezing on the items to be packaged, the items are placed in ice water, and salt is added to the ice water according to the amount of ice water. The refrigeration unit cools the ice water with added salt at its initial power, obtains the real-time temperature of the items to be packaged, and determines whether to adjust the initial power based on the real-time temperature.

[0009] After determining whether to adjust the initial power, the bacterial content in the ice water is obtained, and the water exchange device is turned on based on the bacterial content.

[0010] Once it is determined whether to turn on the water exchange device, the surface temperature of the items to be packaged is reduced to -2°C to complete the micro-freezing treatment;

[0011] The items to be packaged after being micro-frozen are divided; the volume of the divided items is collected, and the vacuum sealing machine's pumping speed S0 is determined based on the volume. The vacuuming operation is completed and the items are sealed at the pumping speed S0.

[0012] Image data of the sealed packaged item is collected, and the image data is analyzed to obtain the bubble volume V0 in the sealed packaged item. The packaging is then judged to be qualified based on the bubble volume V0.

[0013] A first preset bubble volume V1, a second preset bubble volume V2, and a third preset bubble volume V3 are preset, where V1 < V2 < V3; a first preset rate adjustment coefficient A1, a second preset rate adjustment coefficient A2, and a third preset rate adjustment coefficient A3 are preset, where A1 < A2 < A3;

[0014] When V0 < V1, the packaging is deemed qualified;

[0015] When V1≤V0<V2, the packaging is deemed unqualified, and the first preset rate adjustment coefficient A1 is selected to adjust the pumping rate S0, and the adjusted pumping rate S0*A1 is obtained. The packaging is then repackaged using the adjusted pumping rate.

[0016] When V2≤V0<V3, the packaging is deemed unqualified, and the second preset rate adjustment coefficient A2 is selected to adjust the pumping rate S0, and the adjusted pumping rate S0*A2 is obtained. The packaging is then repackaged using the adjusted pumping rate.

[0017] When V3≤V0, the packaging is deemed unqualified, and the third preset rate adjustment coefficient A3 is selected to adjust the pumping rate S0, obtaining the adjusted pumping rate S0*A3, and repackaging is performed with the adjusted pumping rate.

[0018] Further, the number of bacterial colonies on the surface of the items to be packaged is obtained, and the determination of whether to perform ultraviolet sterilization on the items to be packaged is based on the number of bacterial colonies includes:

[0019] A colony count threshold Jmax is preset, and the determination of whether to perform ultraviolet sterilization on the items to be packaged is based on the relationship between the colony count J0 and the colony count threshold Jmax.

[0020] When J0 > Jmax, it is determined that the items to be packaged will be sterilized with ultraviolet light, and the ultraviolet sterilization time is determined according to the number of colonies J0.

[0021] When J0≤Jmax, it is determined that the items to be packaged will not be sterilized with ultraviolet light.

[0022] Furthermore, when it is determined that the items to be packaged will be subjected to ultraviolet sterilization, the ultraviolet sterilization time is determined based on the colony count J0, including:

[0023] Obtain the difference between the colony count J0 and the colony count threshold Jmax, ΔJ = J0 - Jmax; preset a first preset difference ΔJ1, a second preset difference ΔJ2, and a third preset difference ΔJ3, where ΔJ1 < ΔJ2 < ΔJ3; preset a first preset sterilization time T1, a second preset sterilization time T2, and a third preset sterilization time T3, where T1 < T2 < T3;

[0024] The ultraviolet sterilization time is determined based on the relationship between the quantity difference ΔJ and each preset difference.

[0025] When △J1≤△J<△J2, the ultraviolet sterilization time is determined to be T1;

[0026] When △J2≤△J<△J3, the ultraviolet sterilization time is determined to be T2;

[0027] When △J3≤△J, the ultraviolet sterilization time is determined to be T3.

[0028] Furthermore, the real-time temperature of the item to be packaged is obtained, and a decision is made based on the real-time temperature whether to adjust the initial power, including:

[0029] A temperature threshold Qmin is preset; the relationship between the real-time temperature Q0 and the temperature threshold Qmin is used to determine whether to adjust the initial power;

[0030] When Q0 ≤ Qmin, it is determined that the initial power will not be adjusted.

[0031] When Q0 > Qmin, it is determined that the initial power should be adjusted;

[0032] When it is determined that the initial power needs to be adjusted, the temperature difference ΔQ = Q0 - Qmin is obtained, and a first preset temperature difference ΔQ1, a second preset temperature difference ΔQ2, and a third preset temperature difference ΔQ3 are preset. A first preset power adjustment coefficient B1, a second preset power adjustment coefficient B2, and a third preset power adjustment coefficient B3 are preset, where B1 < B2 < B3. Based on the relationship between the temperature difference ΔQ and each preset temperature, the power adjustment coefficient is selected to adjust the initial power P0 of the refrigerator, and the adjusted power is obtained.

[0033] When △Q1≤△Q<△Q2, the first preset power adjustment coefficient B1 is selected to adjust the initial power P0 of the refrigerator, and the adjusted power P0*B1 is obtained.

[0034] When △Q2≤△Q<△Q3, the initial power P0 of the refrigerator is adjusted by selecting the second preset power adjustment coefficient B2, and the adjusted power P0*B2 is obtained.

[0035] When △Q3≤△Q, the initial power P0 of the refrigerator is adjusted by the third preset power adjustment coefficient B3 to obtain the adjusted power P0*B3.

[0036] Furthermore, after adjusting the initial power P0 of the refrigerator by selecting the i-th preset power adjustment coefficient Bi, and obtaining the adjusted power P0*Bi, where i=1, 2, 3, the method further includes:

[0037] Obtain the ambient temperature W0, and preset the first preset ambient temperature W1, the second preset ambient temperature W2 and the third preset ambient temperature W3, where W1 < W2 < W3; based on the relationship between the ambient temperature W0 and each preset temperature, select the power adjustment coefficient to perform a secondary adjustment on the adjusted power P0*Bi, and continue to operate with the secondary adjusted power.

[0038] When W1≤W0<W2, the first preset power adjustment coefficient B1 is selected to perform a second adjustment on the adjusted power P0*Bi, and the second adjusted power P0*Bi*B1 is obtained.

[0039] When W2≤W0<W3, the second preset power adjustment coefficient B2 is selected to adjust the adjusted power P0*Bi a second time, and the power P0*Bi*B2 after the second adjustment is obtained.

[0040] When W3≤W0, the third preset power adjustment coefficient B3 is selected to perform a second adjustment on the adjusted power P0*Bi, and the second adjusted power P0*Bi*B3 is obtained.

[0041] Furthermore, after determining whether to adjust the initial power, the bacterial content in the ice water is obtained, and based on the bacterial content, it is determined whether to activate the water exchange device, including:

[0042] A pre-set bacterial content threshold Xmax is used to determine whether to activate the water exchange device based on the relationship between the bacterial content X0 and the bacterial content threshold Xmax.

[0043] When X0≤Xmax, it is determined that the water exchange device will not be turned on;

[0044] When X0 > Xmax, it is determined that the water exchange device is turned on, and the amount of water exchanged per unit time is determined according to the bacterial content X0.

[0045] Furthermore, when it is determined that the water exchange device will be turned on, the water exchange volume per unit time is determined based on the bacterial content X0, including:

[0046] A first preset bacterial content X1 and a second preset bacterial content X2 are preset, and Xmax < X1 < X2; a first preset water exchange volume H1, a second preset water exchange volume H2 and a third preset water exchange volume H3 are preset, and H1 < H2 < H3; the water exchange volume per unit time is determined according to the relationship between the bacterial content X0 and each preset bacterial content.

[0047] When Xmax < X0 < X1, the water exchange volume per unit time is determined to be H1;

[0048] When X1≤X0<X2, the water exchange volume per unit time is determined to be H2;

[0049] When X2≤X0, the water exchange volume per unit time is determined to be H3.

[0050] Furthermore, after determining that the water exchange device is activated and the water exchange volume per unit time is Hi, i=1, 2, 3, the method further includes:

[0051] Obtain the rate of change of salt concentration L0 per unit time, and pre-set the first preset rate of change of salt concentration L1, the second preset rate of change of salt concentration L2 and the third preset rate of change of salt concentration L3, where L1 < L2 < L3; pre-set the first preset amount of salt added Y1, the second preset amount of salt added Y2 and the third preset amount of salt added Y3, where Y1 < Y2 < Y3.

[0052] The amount of salt added per unit time is determined based on the relationship between the salt concentration change rate L0 and each preset salt concentration change rate.

[0053] When L1≤L0<L2, the amount of salt added per unit time is determined to be Y1;

[0054] When L2≤L0<L3, the amount of salt added per unit time is determined to be Y2;

[0055] When L3≤L0, the amount of salt added per unit time is determined to be Y3.

[0056] Furthermore, the vacuum sealing machine's pumping speed S0 is determined based on the volume, and the vacuuming operation and sealing are performed at the pumping speed S0, including:

[0057] A first preset volume R1, a second preset volume R2, and a third preset volume R3 are preset, and R1 < R2 < R3; a first preset pumping speed S1, a second preset pumping speed S2, and a third preset pumping speed S3 are preset, and S1 < S2 < S3; a preset pumping speed is selected as the pumping speed S0 of the vacuum sealing machine based on the relationship between the divided volume R0 and each preset volume.

[0058] When R1 < R0 < R2, the third preset pumping speed S3 is selected as the pumping speed S0 of the vacuum sealing machine, that is, S0 = S3.

[0059] When R2 < R0 < R3, the second preset pumping speed S2 is selected as the pumping speed S0 of the vacuum sealing machine, that is, S0 = S2.

[0060] When R3 < R0, the first preset pumping speed S1 is selected as the pumping speed S0 of the vacuum sealing machine, that is, S0 = S1.

[0061] Compared with existing technologies, the beneficial effects of this invention are as follows: It introduces ultraviolet sterilization technology to determine the number of bacterial colonies on the surface of items to be packaged, effectively reducing bacterial contamination on food surfaces, lowering the risk of bacterial growth at the source, and further improving food safety. In the micro-freezing stage, precise micro-freezing control is achieved by placing the items to be packaged in ice water with added salt, and adjusting the initial power according to real-time temperature, thereby effectively reducing the temperature and bacterial activity of the food and extending its shelf life. After vacuum packaging, precise detection and adjustment of the sealing quality are achieved by collecting image data and analyzing bubble volume, and by making judgments based on preset bubble volume and rate adjustment coefficients. This not only helps maintain the integrity of food packaging but also further ensures the consistency and safety of food quality. It effectively solves the limitations of current preservation and storage technologies, maintaining the safety, freshness, and quality of food during long-term storage, improving the utilization efficiency of food resources, and reducing food waste.

[0062] On the other hand, the present invention also proposes a packaging system for preservation and storage, comprising:

[0063] The sterilization unit is configured to acquire the number of colonies on the surface of the item to be packaged, determine whether to perform ultraviolet sterilization on the item to be packaged based on the number of colonies, determine the sterilization time based on the number of colonies when it is determined that the item to be packaged should be sterilized with ultraviolet light, and perform micro-freezing treatment on the item to be packaged when it is determined that the item to be packaged should not be sterilized.

[0064] The refrigeration unit is configured to, when performing micro-freezing treatment on the items to be packaged, place the items to be packaged into ice water and add salt to the ice water according to the amount of ice water; the refrigeration unit cools the ice water after adding salt at an initial power, obtains the real-time temperature of the items to be packaged, and determines whether to adjust the initial power based on the real-time temperature;

[0065] The adjustment unit is configured to, after determining whether to adjust the initial power, obtain the bacterial content in the ice water, and determine whether to activate the water exchange device based on the bacterial content; after determining whether to activate the water exchange device, reduce the surface temperature of the item to be packaged to -2°C to complete the micro-freezing process.

[0066] The packaging unit is configured to divide the items to be packaged after micro-freezing; collect the volume of the divided items; determine the vacuum sealing machine's pumping speed S0 based on the volume; complete the vacuuming operation and sealing at the pumping speed S0; collect image data of the sealed packaged items; analyze the image data to obtain the bubble volume V0 in the sealed packaged items; and determine whether the packaging is qualified based on the bubble volume V0.

[0067] It is understandable that the above-mentioned packaging methods and systems for preservation and storage have the same beneficial effects, and will not be elaborated further here. Attached Figure Description

[0068] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0069] Figure 1 A flowchart of a packaging method for preservation and storage provided in an embodiment of the present invention;

[0070] Figure 2 This is a structural block diagram of a packaging system for freshness preservation provided in an embodiment of the present invention. Detailed Implementation

[0071] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0072] See Figure 1 As shown, this embodiment provides a packaging method for preservation and storage, including:

[0073] Step S100: Obtain the number of bacterial colonies on the surface of the item to be packaged, and determine whether to perform ultraviolet sterilization based on the number of colonies. If it is determined that the item to be packaged should be sterilized with ultraviolet light, determine the sterilization time based on the number of colonies. If it is determined that the item to be packaged should not be sterilized, perform a micro-freezing treatment on the item to be packaged.

[0074] Step S200: When performing micro-freezing on the items to be packaged, place the items into ice water and add salt to the ice water according to the volume of ice water. The refrigeration unit cools the salted ice water at its initial power, obtains the real-time temperature of the items to be packaged, and determines whether to adjust the initial power based on the real-time temperature.

[0075] Step S300: After determining whether to adjust the initial power, obtain the bacterial content in the ice water, and determine whether to turn on the water exchange device based on the bacterial content. Once it is determined whether to turn on the water exchange device, lower the surface temperature of the items to be packaged to -2℃ to complete the micro-freezing treatment.

[0076] Step S400: Divide the items to be packaged after micro-freezing. Collect the volume of the divided items, determine the vacuum sealing machine's pumping speed S0 based on the volume, and complete the vacuuming operation and sealing at the pumping speed S0.

[0077] Step S500: Collect image data of the packaged items after sealing, analyze the image data to obtain the bubble volume V0 in the packaged items after sealing, and determine whether the packaging is qualified based on the bubble volume V0.

[0078] Step S500, which determines whether the packaging is qualified based on the bubble volume V0, includes: pre-setting a first preset bubble volume V1, a second preset bubble volume V2, and a third preset bubble volume V3, where V1 < V2 < V3. Pre-setting a first preset rate adjustment coefficient A1, a second preset rate adjustment coefficient A2, and a third preset rate adjustment coefficient A3, where A1 < A2 < A3; when V0 < V1, the packaging is qualified. When V1 ≤ V0 < V2, the packaging is unqualified, and the first preset rate adjustment coefficient A1 is selected to adjust the pumping rate S0, obtaining an adjusted pumping rate S0*A1, which is then used for repackaging. When V2 ≤ V0 < V3, the packaging is unqualified, and the second preset rate adjustment coefficient A2 is selected to adjust the pumping rate S0, obtaining an adjusted pumping rate S0*A2, which is then used for repackaging. When V3≤V0, the packaging is deemed unqualified, and the third preset rate adjustment coefficient A3 is selected to adjust the pumping rate S0, and the adjusted pumping rate S0*A3 is obtained. The packaging is then repackaged using the adjusted pumping rate.

[0079] Specifically, in step S100, the need for ultraviolet (UV) sterilization is first determined by measuring the number of colonies on the surface of the item to be packaged. The bacterial contamination on the food surface is assessed to determine if sterilization is necessary. UV sterilization, as a highly efficient method of bacterial inactivation, can effectively reduce the number of bacteria on the food surface, thereby reducing the risk of bacterial growth and improving food hygiene and safety. If UV sterilization is deemed necessary, the sterilization time is determined based on the previously obtained colony count. The intensity and duration of sterilization are determined according to the bacterial count to ensure effective bacterial inactivation, thus creating a cleaner environment on the food surface. After sterilization, the colony count is checked again; if the count is acceptable, micro-freezing is performed. If UV sterilization is deemed unnecessary, micro-freezing is used. In step S200, low temperature is used to lower the food temperature, slowing bacterial growth and enzyme activity, thereby extending the food's shelf life. This lays the foundation for subsequent micro-freezing. Adding salt lowers the freezing point of the ice water, creating a brine mixture, which helps to lower the food temperature more quickly. In addition, salt inhibits bacterial growth, enhancing food safety. In step S300, obtaining the bacterial content is to assess the bacterial situation during the micro-freezing process. This data reflects the food's hygiene status, providing a basis for subsequent processing and further ensuring food safety. Based on the bacterial content, it is determined whether the water exchange device needs to be activated. If the bacterial content is high, a water exchange operation may be necessary to remove bacteria from the ice water. This reduces bacterial contamination of the food and improves its hygienic quality. In step S400, the micro-frozen food is divided into appropriate portions for individual packaging. This helps maintain the overall quality and hygiene standards of the food and provides suitable food units for subsequent sealing operations. After division, the volume of each individual food unit is collected. This provides a basis for determining the vacuum sealing machine's extraction rate, ensuring that the extraction rate matches the volume of the food unit. The rate setting aims to ensure an appropriate vacuum level, allowing gas inside the food packaging to be effectively extracted, thereby ensuring long-term food storage. In step S500, it is determined whether the sealed packaging is qualified. Different bubble volumes reflect varying degrees of vacuum, thus determining the effectiveness and sealing degree of the seal. If the packaging is deemed substandard, a corresponding preset rate adjustment coefficient is selected based on the determination result to adjust the pumping rate S0. The pumping rate is dynamically adjusted according to the actual bubble volume to achieve a better sealing effect.

[0080] Understandably, assessing bacterial counts allows for tailored treatment based on varying conditions, effectively reducing bacterial contamination in the early stages of micro-freezing and laying the foundation for subsequent preservation and storage. By regulating the salinity and temperature of the ice water, and by monitoring and adjusting refrigeration power in real time, the cooling process is effectively controlled, providing a solid foundation for subsequent preservation and storage. Adjustments to initial power, monitoring of bacterial content, and the use of a water exchange device ensure food hygiene and safety during micro-freezing. Dividing food into appropriate units, determining the vacuuming rate based on volume, and then vacuum sealing guarantees the quality and airtightness of the food packaging. Image data acquisition and analysis, combined with bubble volume assessment, effectively evaluates sealing quality. If a seal is found to be substandard, the system can reseal by adjusting the vacuuming rate to ensure the quality and airtightness of the food packaging. This flexibility and adaptability helps optimize the sealing process, improve the accuracy and effectiveness of sealing operations, and thus better meet the needs of food preservation and storage.

[0081] In some embodiments of this application, obtaining the number of colonies on the surface of the item to be packaged and determining whether to perform ultraviolet sterilization on the item to be packaged based on the number of colonies includes: pre-setting a colony count threshold Jmax, and determining whether to perform ultraviolet sterilization on the item to be packaged based on the relationship between the number of colonies J0 and the colony count threshold Jmax. When J0 > Jmax, it is determined that ultraviolet sterilization will be performed on the item to be packaged, and the ultraviolet sterilization time is determined based on the number of colonies J0. When J0 ≤ Jmax, it is determined that ultraviolet sterilization will not be performed on the item to be packaged.

[0082] Specifically, a pre-set colony count threshold Jmax is used. This threshold serves as a benchmark to determine whether the colony count has reached a level requiring ultraviolet sterilization. The colony count J0 is the actual number of colonies measured on the surface of the item to be packaged. By comparing J0 with the pre-set Jmax, the system can determine whether the colony count exceeds the threshold.

[0083] Understandably, this approach avoids unnecessary UV radiation by determining whether UV sterilization is needed based on actual conditions. Simultaneously, a bacterial count threshold is set, allowing the system to automatically determine the necessity of sterilization under different circumstances, providing a more precise basis for food preservation and storage. This dynamic judgment mechanism helps save energy and resources and improves overall operational efficiency.

[0084] In some embodiments of this application, when it is determined that the packaged items will be subjected to ultraviolet sterilization, the ultraviolet sterilization time is determined based on the colony count J0, including: obtaining the difference between the colony count J0 and the colony count threshold Jmax, ΔJ = J0 - Jmax; pre-setting a first preset difference ΔJ1, a second preset difference ΔJ2, and a third preset difference ΔJ3, where ΔJ1 < ΔJ2 < ΔJ3; pre-setting a first preset sterilization time T1, a second preset sterilization time T2, and a third preset sterilization time T3, where T1 < T2 < T3; and determining the ultraviolet sterilization time based on the relationship between the difference ΔJ and each preset difference. When ΔJ1 ≤ ΔJ < ΔJ2, the ultraviolet sterilization time is determined to be T1. When ΔJ2 ≤ ΔJ < ΔJ3, the ultraviolet sterilization time is determined to be T2. When ΔJ3 ≤ ΔJ, the ultraviolet sterilization time is determined to be T3.

[0085] Understandably, the difference between J0 and Jmax is used to obtain the quantity difference ΔJ. This difference reflects the degree to which the number of bacterial colonies on the surface of the item to be packaged exceeds a threshold. This provides a basis for determining the UV sterilization time based on actual conditions, avoiding sterilization times that are too long or too short. By pre-setting the sterilization time corresponding to different quantity difference thresholds, the solution can automatically adjust the sterilization time under different circumstances, thereby more effectively killing bacteria, improving sterilization efficiency and accuracy, and ensuring food safety and preservation.

[0086] In some embodiments of this application, the real-time temperature of the item to be packaged is obtained, and the initial power is adjusted based on the real-time temperature, including: presetting a temperature threshold Qmin. Preferably, Qmin = -2℃. The initial power is adjusted based on the relationship between the real-time temperature Q0 and the temperature threshold Qmin. When Q0 ≤ Qmin, it is determined that the initial power will not be adjusted. When Q0 > Qmin, it is determined that the initial power will be adjusted. When it is determined that the initial power will be adjusted, the temperature difference ΔQ = Q0 - Qmin is obtained, and a first preset temperature difference ΔQ1, a second preset temperature difference ΔQ2, and a third preset temperature difference ΔQ3 are pre-set, as are a first preset power adjustment coefficient B1, a second preset power adjustment coefficient B2, and a third preset power adjustment coefficient B3, where B1 < B2 < B3. The initial power P0 of the refrigerator is adjusted based on the relationship between the temperature difference ΔQ and each preset temperature, and the adjusted power is obtained. When ΔQ1 ≤ ΔQ < ΔQ2, the initial power P0 of the refrigerator is adjusted using the first preset power adjustment coefficient B1, and the adjusted power P0*B1 is obtained. When ΔQ2 ≤ ΔQ < ΔQ3, the initial power P0 of the refrigerator is adjusted using the second preset power adjustment coefficient B2, and the adjusted power P0*B2 is obtained. When ΔQ3 ≤ ΔQ, the initial power P0 of the refrigerator is adjusted using the third preset power adjustment coefficient B3, and the adjusted power P0*B3 is obtained.

[0087] Specifically, the scheme pre-sets a temperature threshold Qmin as a benchmark for determining whether real-time temperature adjustment is needed. By comparing the real-time temperature Q0 with the pre-set Qmin, it can be determined whether the real-time temperature exceeds the threshold, thus deciding whether to adjust the initial power. If the real-time temperature exceeds the threshold, the temperature difference ΔQ is calculated. Three temperature difference thresholds and three corresponding power adjustment coefficients are pre-set. The adjustment coefficient is determined based on the magnitude of ΔQ, achieving dynamic adjustment of the chiller's initial power.

[0088] Understandably, by utilizing real-time temperature information and flexibly adjusting the initial power according to different temperature conditions, the system maintains the packaged items within a suitable temperature range, further enhancing the food's preservation effect. By pre-setting temperature thresholds and power adjustment coefficients corresponding to different temperature difference ranges, the solution can automatically make appropriate power adjustment decisions under different temperature conditions, ensuring the food remains in optimal condition.

[0089] In some embodiments of this application, after adjusting the initial power P0 of the refrigerator by selecting the i-th preset power adjustment coefficient Bi and obtaining the adjusted power P0*Bi, where i=1, 2, 3, the method further includes: obtaining the ambient temperature W0, and presetting a first preset ambient temperature W1, a second preset ambient temperature W2, and a third preset ambient temperature W3, where W1 < W2 < W3. Based on the relationship between the ambient temperature W0 and each preset temperature, a power adjustment coefficient is selected to perform a secondary adjustment on the adjusted power P0*Bi, and the refrigerator continues to operate with the secondary adjusted power. When W1≤W0<W2, a first preset power adjustment coefficient B1 is selected to perform a secondary adjustment on the adjusted power P0*Bi, and the secondary adjusted power P0*Bi*B1 is obtained. When W2≤W0<W3, a second preset power adjustment coefficient B2 is selected to perform a secondary adjustment on the adjusted power P0*Bi, and the secondary adjusted power P0*Bi*B2 is obtained. When W3≤W0, the third preset power adjustment coefficient B3 is selected to perform a second adjustment on the adjusted power P0*Bi, and the second adjusted power P0*Bi*B3 is obtained.

[0090] Specifically, the current ambient temperature is obtained as a benchmark for secondary adjustments. The ambient temperature W0 is compared with a pre-set ambient temperature threshold to determine the range of ambient temperature. Based on the range, the previously adjusted power P0*Bi is selected, and a corresponding power adjustment coefficient is chosen for secondary adjustments according to different temperature ranges to obtain the adjusted power. Higher ambient temperatures require more cooling power from the refrigeration system to maintain the target temperature. Conversely, lower ambient temperatures require less cooling power. By selecting an appropriate power adjustment coefficient based on the ambient temperature range, the cooling power can be adjusted appropriately under different temperature conditions, ensuring that the packaged items maintain a stable temperature.

[0091] Understandably, by taking into account the impact of ambient temperature on refrigeration requirements, the power of the refrigeration unit is finely adjusted to achieve better performance, stability, and energy efficiency. This adjustment ensures that the items to be packaged can quickly reach a slightly frozen state and maintain it under different working environments, thereby achieving a longer preservation and storage effect.

[0092] In some embodiments of this application, after determining whether to adjust the initial power, the bacterial content in the ice water is obtained, and the decision to activate the water exchange device is based on the bacterial content. This includes: pre-setting a bacterial content threshold Xmax, and determining whether to activate the water exchange device based on the relationship between the bacterial content X0 and the bacterial content threshold Xmax. When X0 ≤ Xmax, it is determined that the water exchange device should not be activated. When X0 > Xmax, it is determined that the water exchange device should be activated, and the water exchange volume per unit time is determined based on the bacterial content X0.

[0093] Specifically, the bacterial content in the ice water is detected, for example, through sampling and testing, and then the actual bacterial content is compared with a pre-set bacterial content threshold. If the actual bacterial content is less than or equal to the set bacterial content threshold, the bacterial content in the environment is determined to be within an acceptable range, and the water exchange device does not need to be activated. Conversely, if the actual bacterial content exceeds the threshold, i.e., X0 > Xmax, the water exchange device needs to be activated to reduce the number of bacteria.

[0094] Understandably, the system automatically determines whether water changes are necessary to control the bacterial count in the environment, based on the actual bacterial levels. This helps maintain the hygiene and quality of food, prevents bacterial growth, and thus extends the shelf life and freshness of food.

[0095] In some embodiments of this application, when it is determined that the water exchange device will be turned on, the water exchange volume per unit time is determined based on the bacterial content X0, including: pre-setting a first preset bacterial content X1 and a second preset bacterial content X2, where Xmax < X1 < X2. A first preset water exchange volume H1, a second preset water exchange volume H2, and a third preset water exchange volume H3 are pre-set, where H1 < H2 < H3. The water exchange volume per unit time is determined based on the relationship between the bacterial content X0 and each preset bacterial content. When Xmax < X0 < X1, the water exchange volume per unit time is determined to be H1. When X1 ≤ X0 < X2, the water exchange volume per unit time is determined to be H2. When X2 ≤ X0, the water exchange volume per unit time is determined to be H3.

[0096] Understandably, automatically adjusting the water exchange rate per unit time based on the actual bacterial content in the environment allows for more precise bacterial control, thereby ensuring the hygiene and preservation of food. This automated water exchange control system helps reduce the number of bacteria in the environment and improve food safety and freshness without wasting resources.

[0097] In some embodiments of this application, after determining that the water exchange device is turned on and determining the water exchange volume per unit time as Hi, i=1, 2, 3, the method further includes: obtaining the salt concentration change rate L0 per unit time; pre-setting a first preset salt concentration change rate L1, a second preset salt concentration change rate L2, and a third preset salt concentration change rate L3, where L1 < L2 < L3; pre-setting a first preset salt addition amount Y1, a second preset salt addition amount Y2, and a third preset salt addition amount Y3, where Y1 < Y2 < Y3; and determining the salt addition amount per unit time based on the relationship between the salt concentration change rate L0 and each preset salt concentration change rate. When L1≤L0<L2, the salt addition amount per unit time is determined to be Y1. When L2≤L0<L3, the salt addition amount per unit time is determined to be Y2. When L3≤L0, the salt addition amount per unit time is determined to be Y3.

[0098] Specifically, the rate of change in salt concentration per unit time is monitored and compared with a pre-set rate of change. Based on the comparison results, the amount of salt to be added is determined to ensure the salt content in the ice water and maintain the micro-freezing process of the items. The purpose of the water exchange device is to effectively reduce the number of bacteria on the surface of food by changing the water source, thereby extending the shelf life of the food. However, when the water is changed, the old water is removed, and the salt concentration of the new water differs from that of the old water, which may affect the salt content of the ice water. Salt plays an important role in the preservation of food quality; therefore, after the water is changed, appropriate salting is required to ensure that the quality of the food is not affected.

[0099] Understandably, by comparing the actual rate of change in salt concentration with the preset rate of change, it can be determined whether the amount of salt added needs to be adjusted to maintain the salt content in the ice water. If the actual rate of change in salt concentration matches or is close to the preset value, it indicates that the salt content is controlled within a suitable range, and no adjustment of the amount of salt added is needed. However, if the actual rate of change in salt concentration deviates from the preset value, the amount of salt added needs to be adjusted according to the degree of deviation to ensure that the salt content in the ice water can be maintained at an appropriate level, thereby ensuring the effectiveness of the micro-freezing treatment of the items.

[0100] In some embodiments of this application, the vacuum sealing machine's pumping speed S0 is determined based on volume, and the vacuuming operation and sealing are completed at the pumping speed S0. This includes: pre-setting a first preset volume R1, a second preset volume R2, and a third preset volume R3, where R1 < R2 < R3. Pre-setting a first preset pumping speed S1, a second preset pumping speed S2, and a third preset pumping speed S3, where S1 < S2 < S3. A preset pumping speed is selected as the vacuum sealing machine's pumping speed S0 based on the relationship between the divided volume R0 and each preset volume. When R1 < R0 < R2, the third preset pumping speed S3 is selected as the vacuum sealing machine's pumping speed S0, i.e., S0 = S3. When R2 < R0 < R3, the second preset pumping speed S2 is selected as the vacuum sealing machine's pumping speed S0, i.e., S0 = S2. When R3 < R0, the first preset pumping speed S1 is selected as the vacuum sealing machine's pumping speed S0, i.e., S0 = S1.

[0101] Understandably, based on the relationship between R0 and the preset volume, a corresponding preset vacuum rate is selected as the vacuum rate S0 of the vacuum sealer to achieve a suitable vacuuming effect during the sealing process. Large-volume packaging has a relatively large internal space, requiring higher power to effectively expel internal air and ensure a sufficiently low air pressure. If only a lower vacuum rate is used, a sufficient vacuum effect may not be achieved within the specified time, resulting in a loose seal, air penetration, and compromised preservation. Therefore, in large-volume packaging, setting a higher vacuum rate allows for faster expulsion of internal air, ensuring a suitable vacuum state. Conversely, small-volume packaging has a smaller internal space, requiring less time and power to expel internal air. Using an excessively high vacuum rate in small-volume packaging may lead to over-extraction, potentially causing food to be pulled out of the packaging container, affecting product integrity. Therefore, in small-volume packaging, appropriately reducing the vacuum rate allows for more precise control of the expulsion level, avoiding unnecessary problems. The purpose of setting different vacuum rates for different volumes is to ensure that packaging of different sizes receives appropriate vacuum treatment during the sealing process, thereby achieving optimal sealing, preservation, and product integrity. This differentiated air extraction rate setting helps to optimize for different packaging needs, improving the stability and efficiency of the sealing process.

[0102] In the above embodiments, ultraviolet sterilization technology is introduced to determine the number of bacterial colonies on the surface of the items to be packaged. This effectively reduces bacterial contamination on the food surface, lowers the risk of bacterial growth at the source, and further improves food safety. During the micro-freezing stage, precise micro-freezing control is achieved by placing the items to be packaged in ice water with added salt and adjusting the initial power according to real-time temperature. This effectively reduces the temperature and bacterial activity of the food, extending its shelf life. After vacuum packaging, precise detection and adjustment of the sealing quality are achieved by collecting image data, analyzing bubble volume, and making judgments based on preset bubble volume and rate adjustment coefficients. This not only helps maintain the integrity of food packaging but also further ensures the consistency and safety of food quality. It effectively solves the limitations of current preservation and storage technologies, maintaining the safety, freshness, and quality of food during long-term storage, improving the utilization efficiency of food resources, and reducing food waste.

[0103] In another preferred embodiment based on the above embodiments, see [reference] Figure 2 As shown, this embodiment provides a packaging system for preservation and storage, including:

[0104] The sterilization unit is configured to acquire the number of colonies on the surface of the item to be packaged, and determine whether to perform ultraviolet sterilization on the item based on the number of colonies; when it is determined that the item to be packaged should be sterilized with ultraviolet light, the sterilization time is determined based on the number of colonies; when it is determined that the item to be packaged should not be sterilized, the item to be packaged is subjected to micro-freezing treatment.

[0105] The refrigeration unit is configured to place the items to be packaged into ice water and add salt to the ice water according to the amount of ice water when performing micro-freezing treatment; the refrigeration unit cools the ice water after adding salt at the initial power, obtains the real-time temperature of the items to be packaged, and determines whether to adjust the initial power based on the real-time temperature;

[0106] The adjustment unit is configured to, after determining whether to adjust the initial power, obtain the bacterial content in the ice water, and determine whether to activate the water exchange device based on the bacterial content; after determining whether to activate the water exchange device, reduce the surface temperature of the items to be packaged to -2℃ to complete the micro-freezing process.

[0107] The packaging unit is configured to divide the items to be packaged after micro-freezing; collect the volume of the divided items, determine the vacuum sealing machine's pumping speed S0 based on the volume, complete the vacuuming operation and sealing at the pumping speed S0; collect image data of the packaged items after sealing, analyze the image data to obtain the bubble volume V0 in the packaged items after sealing, and determine whether the packaging is qualified based on the bubble volume V0.

[0108] It is understandable that the above-mentioned packaging methods and systems for preservation and storage have the same beneficial effects, and will not be elaborated further here.

[0109] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0110] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0111] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0112] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A packaging method for preservation and storage, characterized in that, include: Obtain the number of bacterial colonies on the surface of the item to be packaged, and determine whether to perform ultraviolet sterilization on the item to be packaged based on the number of bacterial colonies; When it is determined that the items to be packaged shall be subjected to ultraviolet sterilization, the sterilization time shall be determined based on the number of bacterial colonies. When it is determined that the items to be packaged do not need to be sterilized, the items to be packaged are subjected to a micro-freezing treatment; When performing micro-freezing on the items to be packaged, the items are placed in ice water, and salt is added to the ice water according to the amount of ice water. The refrigeration unit cools the ice water with added salt at its initial power, obtains the real-time temperature of the items to be packaged, and determines whether to adjust the initial power based on the real-time temperature. After determining whether to adjust the initial power, the bacterial content in the ice water is obtained, and the water exchange device is turned on based on the bacterial content. After determining whether to turn on the water exchange device, the surface temperature of the items to be packaged is reduced to -2°C to complete the micro-freezing process. The items to be packaged after being micro-frozen are divided; the volume of the divided items is collected, and the vacuum sealing machine's pumping speed S0 is determined based on the volume. The vacuuming operation is completed and the items are sealed at the pumping speed S0. Image data of the sealed packaged item is collected, and the image data is analyzed to obtain the bubble volume V0 in the sealed packaged item. The packaging is then judged to be qualified based on the bubble volume V0. A first preset bubble volume V1, a second preset bubble volume V2, and a third preset bubble volume V3 are preset, and V1 < V2 < V3; A first preset rate adjustment coefficient A1, a second preset rate adjustment coefficient A2, and a third preset rate adjustment coefficient A3 are preset, where A1 < A2 < A3; When V0 < V1, the packaging is deemed qualified; When V1≤V0<V2, the packaging is deemed unqualified, and the first preset rate adjustment coefficient A1 is selected to adjust the pumping rate S0, and the adjusted pumping rate S0*A1 is obtained. The packaging is then repackaged using the adjusted pumping rate. When V2≤V0<V3, the packaging is deemed unqualified, and the second preset rate adjustment coefficient A2 is selected to adjust the pumping rate S0, and the adjusted pumping rate S0*A2 is obtained. The packaging is then repackaged using the adjusted pumping rate. When V3≤V0, the packaging is deemed unqualified, and the third preset rate adjustment coefficient A3 is selected to adjust the pumping rate S0, obtaining the adjusted pumping rate S0*A3, and repackaging is performed with the adjusted pumping rate.

2. The packaging method for preservation and storage according to claim 1, characterized in that, Obtaining the number of bacterial colonies on the surface of the item to be packaged, and determining whether to perform ultraviolet sterilization on the item to be packaged based on the number of bacterial colonies, including: A colony count threshold Jmax is preset, and the determination of whether to perform ultraviolet sterilization on the items to be packaged is based on the relationship between the colony count J0 and the colony count threshold Jmax. When J0 > Jmax, it is determined that the items to be packaged will be sterilized with ultraviolet light, and the ultraviolet sterilization time is determined according to the number of colonies J0. When J0≤Jmax, it is determined that the items to be packaged will not be sterilized with ultraviolet light.

3. The packaging method for preservation and storage according to claim 2, characterized in that, When it is determined that the items to be packaged shall be subjected to ultraviolet sterilization, the ultraviolet sterilization time shall be determined based on the colony count J0, including: Obtain the difference between the colony count J0 and the colony count threshold Jmax, ΔJ = J0 - Jmax; preset a first preset difference ΔJ1, a second preset difference ΔJ2, and a third preset difference ΔJ3, where ΔJ1 < ΔJ2 < ΔJ3; preset a first preset sterilization time T1, a second preset sterilization time T2, and a third preset sterilization time T3, where T1 < T2 < T3; The ultraviolet sterilization time is determined based on the relationship between the quantity difference ΔJ and each preset difference. When △J1≤△J<△J2, the ultraviolet sterilization time is determined to be T1; When △J2≤△J<△J3, the ultraviolet sterilization time is determined to be T2; When △J3≤△J, the ultraviolet sterilization time is determined to be T3.

4. The packaging method for preservation and storage according to claim 3, characterized in that, Obtain the real-time temperature of the item to be packaged, and determine whether to adjust the initial power based on the real-time temperature, including: A temperature threshold Qmin is preset; the relationship between the real-time temperature Q0 and the temperature threshold Qmin is used to determine whether to adjust the initial power; When Q0 ≤ Qmin, it is determined that the initial power will not be adjusted. When Q0 > Qmin, it is determined that the initial power should be adjusted; When it is determined that the initial power needs to be adjusted, the temperature difference ΔQ = Q0 - Qmin is obtained, and a first preset temperature difference ΔQ1, a second preset temperature difference ΔQ2, and a third preset temperature difference ΔQ3 are preset. A first preset power adjustment coefficient B1, a second preset power adjustment coefficient B2, and a third preset power adjustment coefficient B3 are preset, where B1 < B2 < B3. Based on the relationship between the temperature difference ΔQ and each preset temperature, the power adjustment coefficient is selected to adjust the initial power P0 of the refrigerator, and the adjusted power is obtained. When △Q1≤△Q<△Q2, the first preset power adjustment coefficient B1 is selected to adjust the initial power P0 of the refrigerator, and the adjusted power P0*B1 is obtained. When △Q2≤△Q<△Q3, the initial power P0 of the refrigerator is adjusted by selecting the second preset power adjustment coefficient B2, and the adjusted power P0*B2 is obtained. When △Q3≤△Q, the initial power P0 of the refrigerator is adjusted by the third preset power adjustment coefficient B3 to obtain the adjusted power P0*B3.

5. The packaging method for preservation and storage according to claim 4, characterized in that, After adjusting the initial power P0 of the refrigerator by selecting the i-th preset power adjustment coefficient Bi, and obtaining the adjusted power P0*Bi, where i=1, 2, 3, the method further includes: Obtain the ambient temperature W0, and preset the first preset ambient temperature W1, the second preset ambient temperature W2 and the third preset ambient temperature W3, where W1 < W2 < W3; based on the relationship between the ambient temperature W0 and each preset temperature, select the power adjustment coefficient to perform a secondary adjustment on the adjusted power P0*Bi, and continue to operate with the secondary adjusted power. When W1≤W0<W2, the first preset power adjustment coefficient B1 is selected to perform a second adjustment on the adjusted power P0*Bi, and the second adjusted power P0*Bi*B1 is obtained. When W2≤W0<W3, the second preset power adjustment coefficient B2 is selected to adjust the adjusted power P0*Bi a second time, and the power P0*Bi*B2 after the second adjustment is obtained. When W3≤W0, the third preset power adjustment coefficient B3 is selected to perform a second adjustment on the adjusted power P0*Bi, and the second adjusted power P0*Bi*B3 is obtained.

6. The packaging method for preservation and storage according to claim 5, characterized in that, After determining whether to adjust the initial power, the bacterial content in the ice water is obtained, and the decision to activate the water exchange device is based on the bacterial content, including: A pre-set bacterial content threshold Xmax is used to determine whether to activate the water exchange device based on the relationship between the bacterial content X0 and the bacterial content threshold Xmax. When X0≤Xmax, it is determined that the water exchange device will not be turned on; When X0 > Xmax, it is determined that the water exchange device is turned on, and the amount of water exchanged per unit time is determined according to the bacterial content X0.

7. The packaging method for preservation and storage according to claim 6, characterized in that, When it is determined that the water exchange device will be turned on, the water exchange volume per unit time is determined based on the bacterial content X0, including: A first preset bacterial content X1 and a second preset bacterial content X2 are preset, and Xmax < X1 < X2; a first preset water exchange volume H1, a second preset water exchange volume H2 and a third preset water exchange volume H3 are preset, and H1 < H2 < H3; the water exchange volume per unit time is determined according to the relationship between the bacterial content X0 and each preset bacterial content. When Xmax < X0 < X1, the water exchange volume per unit time is determined to be H1; When X1≤X0<X2, the water exchange volume per unit time is determined to be H2; When X2≤X0, the water exchange volume per unit time is determined to be H3.

8. The packaging method for preservation and storage according to claim 7, characterized in that, After determining that the water exchange device is activated and the water exchange volume per unit time is Hi, i=1, 2, 3, the method further includes: Obtain the rate of change of salt concentration L0 per unit time, and pre-set the first preset rate of change of salt concentration L1, the second preset rate of change of salt concentration L2 and the third preset rate of change of salt concentration L3, where L1 < L2 < L3; pre-set the first preset amount of salt added Y1, the second preset amount of salt added Y2 and the third preset amount of salt added Y3, where Y1 < Y2 < Y3. The amount of salt added per unit time is determined based on the relationship between the salt concentration change rate L0 and each preset salt concentration change rate. When L1≤L0<L2, the amount of salt added per unit time is determined to be Y1; When L2≤L0<L3, the amount of salt added per unit time is determined to be Y2; When L3≤L0, the amount of salt added per unit time is determined to be Y3.

9. The packaging method for preservation and storage according to claim 8, characterized in that, The vacuum sealing machine's pumping speed S0 is determined based on the volume, and the vacuuming operation and sealing are performed at the pumping speed S0, including: A first preset volume R1, a second preset volume R2, and a third preset volume R3 are preset, and R1 < R2 < R3; a first preset pumping speed S1, a second preset pumping speed S2, and a third preset pumping speed S3 are preset, and S1 < S2 < S3; a preset pumping speed is selected as the pumping speed S0 of the vacuum sealing machine based on the relationship between the divided volume R0 and each preset volume. When R1 < R0 < R2, the third preset pumping speed S3 is selected as the pumping speed S0 of the vacuum sealing machine, that is, S0 = S3. When R2 < R0 < R3, the second preset pumping speed S2 is selected as the pumping speed S0 of the vacuum sealing machine, that is, S0 = S2. When R3 < R0, the first preset pumping speed S1 is selected as the pumping speed S0 of the vacuum sealing machine, that is, S0 = S1.

10. A packaging system for preservation and storage, used in applying the packaging method for preservation and storage as described in any one of claims 1-9, characterized in that, include: The sterilization unit is configured to acquire the number of colonies on the surface of the item to be packaged, and determine whether to perform ultraviolet sterilization on the item to be packaged based on the number of colonies. When it is determined that the items to be packaged shall be subjected to ultraviolet sterilization, the sterilization time shall be determined based on the number of bacterial colonies. When it is determined that the items to be packaged do not need to be sterilized, the items to be packaged are subjected to a micro-freezing treatment; The refrigeration unit is configured to, when performing micro-freezing treatment on the items to be packaged, place the items to be packaged into ice water and add salt to the ice water according to the amount of ice water; the refrigeration unit cools the ice water after adding salt at an initial power, obtains the real-time temperature of the items to be packaged, and determines whether to adjust the initial power based on the real-time temperature; The adjustment unit is configured to, after determining whether to adjust the initial power, obtain the bacterial content in the ice water, and determine whether to activate the water exchange device based on the bacterial content; after determining whether to activate the water exchange device, reduce the surface temperature of the item to be packaged to -2°C to complete the micro-freezing process. The packaging unit is configured to divide the items to be packaged after micro-freezing; collect the volume of the divided items; determine the vacuum sealing machine's pumping speed S0 based on the volume; and complete the vacuuming operation and sealing at the pumping speed S0. Image data of the sealed packaged item is collected, and the image data is analyzed to obtain the bubble volume V0 in the sealed packaged item. The packaging is then judged to be qualified based on the bubble volume V0.

Images