CN116076559A - Low-temperature fresh-keeping monitoring system and method for controlled atmosphere warehouse of fresh grape - Google Patents

Abstract

The invention discloses a low-temperature fresh-keeping monitoring system and method for fresh grapes in a controlled atmosphere storage, which includes using machine vision equipment and detection equipment to obtain the first maturity degree of grapes; The first storage time; based on the storage time experience change curve to obtain the second storage time of this time node; according to the first storage time and the second storage time, determine whether there is an abnormality in grape storage; according to the grape variety information and the third storage time Assign a storage location to the grapes; select the time point for ventilation based on the location of the controlled atmosphere storage and the external weather information, and set the working time period of the ventilation equipment based on the external and internal parameter information. The invention can improve the safety of the grape storage process, reduce unnecessary grape self-loss, and effectively save ventilation energy consumption.

Description

A monitoring system and method for low-temperature fresh-keeping of fresh table grapes in a controlled-atmosphere storage

technical field

The invention relates to the field of low-temperature preservation of fresh grapes, in particular to a monitoring system and method for low-temperature preservation of fresh grapes in a controlled atmosphere storage.

Background technique

The controlled atmosphere fresh-keeping warehouse is a relatively advanced grape fresh-keeping facility at home and abroad. It can not only adjust the temperature and humidity in the warehouse, but also control the content of oxygen, carbon dioxide and other gases in the warehouse, so that the grapes in the warehouse are in a dormant state, which can effectively prolong the storage period of grapes and have significant economic benefits.

The existing controlled atmosphere fresh-keeping system mainly faces the following problems: First, after the grapes are stored in the warehouse, they are generally stored for a long time, and it is difficult for the user to grasp the storage situation of the grapes in the controlled atmosphere warehouse in real time. Infection, frost, wrong temperature and humidity environment parameters, abnormality of related testing equipment, etc. cannot be detected and warned in time; secondly, some air-conditioned warehouses have a large internal space, and the storage locations of grapes in air-conditioned warehouses are often randomly assigned, and there is no corresponding Different grapes have different storage periods. Grapes with a long storage period tend to be stored in controlled atmosphere warehouses for a long time. Frequent door openings and exits will cause fluctuations in the storage environment of grapes at doorways, aisles, etc. The storage environment The frequent fluctuations of the grapes will also cause more respiration of the grapes, resulting in unnecessary loss of the grapes, which is not conducive to the long-term storage of the grapes; finally, the grapes need to be ventilated every day during the storage process in the controlled atmosphere warehouse, and the time for ventilating is often Choose a certain time at night based on experience, and the time period for ventilation is generally fixed at two hours. However, depending on the external environment information, the corresponding optimal time point and time period for ventilation are not the same. Similarly, if the ventilation time is selected properly, energy consumption can be greatly saved. The setting of the ventilation time period is also very important. If the ventilation time is too short, the ventilation effect will not be achieved. If the ventilation time is too long, it will Unnecessary fluctuations in temperature, humidity, carbon dioxide concentration, oxygen concentration, etc. in the storage environment are caused, which is not conducive to the stable control of the grape storage environment, and is not conducive to saving energy consumption.

Contents of the invention

The object of the present invention is to provide a monitoring system and method for low-temperature preservation of fresh grapes in a controlled atmosphere storage, so as to solve the technical problems mentioned in the above-mentioned background technology.

In order to achieve the above object, the concrete technical scheme adopted of the present invention is:

A method for monitoring freshness of table grapes in a controlled atmosphere storage at low temperature, comprising the following steps:

Every preset time period, using machine vision equipment and detection equipment to obtain the first maturity of grapes;

Obtaining a first storage time of a preset time node based on the first maturity;

Obtaining the second storage time of the time node based on the storable time experience change curve;

According to the first storage time and the second storage time, it is judged whether there is abnormality in grape storage.

The first maturity refers to the real-time maturity of the grape corresponding to the preset time node;

The first storage time refers to the estimated maximum storage time of the real-time maturity of the grape corresponding to the preset time node;

The second storage time refers to the estimated maximum storable time of grape experience corresponding to the preset time node;

The empirical change curve of storable time refers to the estimated maximum storable time change curve experienced by grapes in the normal storage process of the controlled atmosphere warehouse.

Said every preset time period, before using machine vision equipment and detection equipment to obtain the first ripeness of grapes, also includes:

Use machine vision equipment to identify grape variety information;

Obtain the second maturity degree of grapes based on machine vision equipment and detection equipment, and combine the second maturity degree to obtain the third storage time of grapes;

assigning storage locations to grapes based on the variety information of the grapes and the third storage time;

The second maturity refers to the initial maturity of grapes;

The third storage time refers to the initial estimated maximum storage time.

The allocation of storage locations to grapes based on the grape variety information and the third storage time includes: storing different varieties of grapes in different preset areas, and in the different preset areas, according to the third storage time in order The storage location of grapes of the same variety is assigned, the storage location of grapes with a long storage time is relatively inside, and away from the door and aisle, and the storage location of grapes with a short storage time is relatively outside, close to the door and aisle.

Said using machine vision equipment and detection equipment to obtain the first maturity degree of grapes includes: using machine vision equipment to collect grape varieties, color and luster, and average size, and using a sugar detector, acidity detector, and phenolic substance concentration detector to determine The sugar content, acidity, and phenolic substance concentration information of the grapes are collected, and the maturity of the grapes is obtained based on the above collected information.

According to the first storage time and the second storage time, after judging whether there is an abnormality in grape storage, it also includes:

When there is an abnormality, reduce the value of the preset time period, and when there is no abnormality, increase the value of the preset time period;

Specifically include: when there is an abnormality, reduce the size of the preset time period by a, the minimum is not less than T_min, when there is no abnormality, increase the size of the preset time period by b, the maximum is not greater than T_max, a and b The value is preset in advance, and the value range of the preset time period is (T_min, T_max).

The method for monitoring freshness of table grapes in a controlled atmosphere storage at low temperature also includes:

In response to the instructions issued by people through mobile terminals and cloud servers, the detection of abnormalities in grape storage is started.

After the first storage time and the second storage time of the grapes based on the time node, after judging whether there is an abnormality in the grape storage at the time node, it also includes:

When there is an abnormality, send an abnormal prompt message to the mobile terminal, and further identify whether there is bacterial infection or frost on the grape body. If bacterial infection or frosting is found on the grape body, sterilize or defrost the grape body operate;

When no bacterial infection or frost is found on the grape body, a prompt message is sent to the mobile terminal to remind people to check whether there is a problem with the on-site equipment, including whether the temperature and humidity sensor is normal, check the machine vision equipment, sugar detector, acidity detector, phenol Check whether the substance concentration detector is normal.

The method for monitoring freshness of table grapes in a controlled atmosphere storage at low temperature also includes:

After the grapes are stored in the corresponding position in the warehouse, start counting the stored time, and when the storage time reaches the preset time point or the remaining estimated storage time reaches the preset time point, a prompt message is sent to the corresponding mobile terminal. When the maximum storage safety period is reached, an alarm message is sent to the mobile terminal.

The method for monitoring freshness of table grapes in a controlled atmosphere storage at low temperature also includes:

Obtain the location of the controlled atmosphere warehouse and the external weather information, and select the working time of the ventilation equipment based on the location and external weather information;

Based on the external and internal parameter information, set the working time period of the ventilation equipment;

The parameter information of the outside world and inside the warehouse includes the temperature and humidity of the outside world, the concentration of carbon dioxide, oxygen concentration, temperature, and humidity in the warehouse, and the volume in the warehouse that needs to be ventilated.

According to another aspect of the present invention, there is also provided a low-temperature preservation monitoring system for table grapes in a controlled atmosphere storage, including:

Control module, ventilation module, storage location management module, information collection module, sterilization module, defrosting module, cloud server, mobile terminal;

The information collection module utilizes machine vision equipment and detection equipment to obtain the first maturity degree of grapes every preset time period;

The control module obtains the first storage time of the preset time node based on the first maturity; obtains the second storage time of the time node based on the storable time experience change curve; according to the first storage time and the second storage time, Determine whether there is an abnormality in grape storage;

The storage location management module assigns a storage location to the grapes based on the variety information of the grapes and the third storage time;

The ventilation module realizes automatic ventilation in the storage under the control of the control module.

The location management module assigns storage locations to grapes based on the variety information of the grapes and the third storage time, including: storing grapes of different varieties in different preset areas, in the different preset areas, according to the third The storage time assigns the storage locations of grapes of the same variety in sequence. The storage location of grapes with a long storage time is relatively inside and away from the door and aisle, and the storage location of grapes with a short storage time is relatively outside, close to the door and aisle;

The variety information of the grapes is obtained based on machine vision equipment recognition;

The third storage time refers to the initial estimated maximum storage time, and obtains the second maturity degree of grapes based on machine vision equipment and detection equipment, and obtains the third storage time in combination with the second maturity degree; Degree refers to the initial ripeness of the grapes.

The storage location management module will also collect storage batches, grape varieties, storage locations, storage time, stored time, estimated storage time, and send the above data information to the control module.

The ventilation module specifically includes a number of ventilation fans evenly distributed in the controlled atmosphere storage;

The automatic ventilation in the warehouse under the control of the control module includes: the control module sets the ventilation time point of the ventilation module based on the location of the controlled atmosphere warehouse and the external weather information; the control module also Based on the external and internal parameter information, the length of time period for the ventilation equipment to work is set; the external and internal parameter information includes external temperature, humidity, carbon dioxide concentration, oxygen concentration, temperature, humidity in the storage, The volume to be ventilated.

The detection equipment includes a sugar detector, an acidity detector, and a phenolic substance concentration detector; except the detection equipment, the information collection module also includes a temperature sensor, a humidity sensor, a carbon dioxide concentration sensor, an oxygen concentration sensor, and a position sensor 1. An external weather information acquisition module, the information acquisition module sends the collected data information to the control module.

After the control module judges whether there is an abnormality in grape storage according to the first storage time and the second storage time, the control module further includes: when there is an abnormality, reducing the value of the preset time period, and when there is no abnormality, increasing the preset value. The value of the time period.

After the control module judges whether there is an abnormality in grape storage according to the first storage time and the second storage time, it also includes: when there is an abnormality, start the sterilization and defrosting module to perform operations or prompt people to check whether the on-site equipment is abnormal.

The control module will collect and store relevant data information and send it to the cloud server, and people can query or obtain the above-mentioned relevant data information through the mobile terminal;

The relevant data information includes storage batches, grape varieties, storage locations, storage time, storage time, estimated storage time, temperature and humidity information in the storage, carbon dioxide concentration information in the storage, oxygen concentration information in the storage, prompt information, Alarm information, the real estimated maximum storage time of grapes, and external weather information.

Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a low-temperature preservation monitoring system and method for fresh table grapes in a controlled atmosphere storage; Store relevant data information and send it to the cloud server, which is convenient for people to use mobile terminals to view and obtain grape storage in real time, improving the security of the grape storage process; it allocates corresponding storage locations based on grape variety and maturity information, which can reduce Unnecessary grape self-loss is beneficial to the long-term storage of grapes; by selecting and setting the appropriate ventilation time point and time period, the energy consumption of ventilation can be effectively saved under the precise control of the ventilation process.

Description of drawings

Fig. 1 is the schematic flow chart of the low-temperature preservation monitoring method of table grapes in a controlled atmosphere storehouse;

Fig. 2 is the structure schematic diagram of the low-temperature fresh-keeping monitoring system of the controlled atmosphere storehouse of table grape;

Figure 3 is a schematic diagram of the comparison between the storable time experience and the real-time change curve;

Figure 4 is a schematic diagram of the comparison between maturity experience and real-time change curves.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

A method for monitoring freshness of table grapes in a controlled atmosphere storage at low temperature, as shown in Figure 1, comprising the following steps:

Every preset time period, using machine vision equipment and detection equipment to obtain the first maturity of grapes;

Obtaining a first storage time of a preset time node based on the first maturity;

Obtaining the second storage time of the time node based on the storable time experience change curve;

According to the first storage time and the second storage time, it is judged whether there is abnormality in grape storage.

The first maturity refers to the real-time maturity of the grape corresponding to the preset time node;

The first storage time refers to the estimated maximum storage time of the real-time maturity of the grape corresponding to the preset time node;

The second storage time refers to the estimated maximum storable time of grape experience corresponding to the preset time node;

The empirical change curve of storable time refers to the estimated maximum storable time change curve experienced by grapes in the normal storage process of the controlled atmosphere warehouse.

As shown in Figure 3 and Figure 4, during the normal storage of grapes, as the storage time of grapes in the controlled atmosphere storage increases, the sugar content, acidity value, and concentration of phenolic substances in the grapes will gradually change. The maturity z of the grapes will gradually increase, and the corresponding storable time y will gradually decrease, that is, the storable time y of the grapes has a corresponding storable time experience curve, for example, the maturity of the sunshine rose is 70% when it is put into storage , when it is normally stored for 2 months, its maturity should be 75%, and its storage time should be 4 months; when it is normally stored for 4 months, its maturity should be 80%, and its storage time should be 2 month, the example here is only used to help people understand the technical solution of the present invention, the storable time experience change curve can be obtained based on historical experience, and can be updated in real time through self-learning, that is, different time nodes t in the storage process are predicted Corresponding to different maturity levels and second storage times.

Every preset time period or in response to instructions issued by people through mobile terminals and cloud servers, machine vision equipment and detection equipment are used to obtain the first maturity of grapes, and the first maturity of the preset time node is obtained based on the first maturity. A storage time Y1, based on the above-mentioned storable time experience change curve to obtain the second storage time y1 of the time node;

Based on the first storage time Y1 and the second storage time y1, it is judged whether there is an abnormality, which can effectively detect that the storage time has dropped too fast. As shown in Figure 3, the preset time node t1 is judged based on the storable time experience change curve It should be able to store another y1 months, but according to the current maturity detection results, the first storage time corresponding to the preset time node t1 is only Y1 months, and Y1<y1, which means that there is an abnormality in the storage of grapes. Send a prompt message to further identify the cause of the abnormality and perform corresponding processing; in order to use the first storage time Y1 and the second storage time y1 to accurately judge whether there is an abnormality in the grape storage process, a corresponding threshold is set to measure The difference between the two, when the difference between the two exceeds the threshold, indicates that there is an abnormality in grape storage.

Said every preset time period, before using machine vision equipment and detection equipment to obtain the first ripeness of grapes, also includes:

Use machine vision equipment to identify grape variety information;

Obtain the second maturity degree of grapes based on machine vision equipment and detection equipment, and combine the second maturity degree to obtain the third storage time of grapes;

assigning storage locations to grapes based on the variety information of the grapes and the third storage time;

The second maturity refers to the initial maturity of grapes;

The third storage time refers to the initial estimated maximum storage time.

The maximum storage time of grapes in controlled atmosphere storage is related to the variety and maturity of grapes; different varieties of grapes have different third storage times in controlled atmosphere storage, such as sunshine rose, summer black, Kyoho, golden finger, etc. Different varieties of grapes have different maximum storage periods; grapes of different maturity also have different third storage periods in controlled atmosphere storage. For example, the storage period of summer black grapes with 70% maturity is 4 months, and 80% The storage period of summer black grapes with 70% maturity is 2.5 months, and the storage period of sunshine rose grapes with 70% maturity is 6 months. The examples here are only used to help people understand the technical solution of the present invention;

The use of machine vision equipment to identify grape variety information is specifically to use cameras to collect image information of grapes to be put into storage, and identify grape varieties based on image processing and recognition algorithms; the maturity of grapes is generally related to its color, average size, sugar content, The acidity value is related to the concentration of phenolic substances; the second maturity degree of grapes obtained based on machine vision equipment and detection equipment specifically includes: using machine vision equipment to collect grape varieties, color, and average size, using sugar detectors, acidity detection Instrument, phenolic substance concentration detector to collect grape sugar, acidity, phenolic substance concentration information, based on the information collected above to obtain the second maturity of grapes.

In order to obtain higher economic benefits, grapes are often stored for a longer period of time as much as possible. Generally, they are stored until they are out of season or at a suitable time node and then sold. In addition, during the storage of grapes, the storage environment changes frequently. It will often cause more respiration of the grape itself, resulting in unnecessary self-loss, which is not conducive to the long-term storage of grapes;

The allocation of storage locations to grapes based on the grape variety information and the third storage time includes: storing different varieties of grapes in different preset areas, and in the different preset areas, according to the third storage time in order The storage location of grapes of the same variety is assigned, the storage location of grapes with a long storage time is relatively inside, and away from the door and aisle, and the storage location of grapes with a short storage time is relatively outside, close to the door and aisle.

The specific process of obtaining the first maturity degree of grapes by using machine vision equipment and detection equipment is similar to the process of obtaining the second maturity degree of grapes based on machine vision equipment and detection equipment.

According to the first storage time and the second storage time, after judging whether there is an abnormality in grape storage, it also includes:

When there is an abnormality, reduce the value of the preset time period, and when there is no abnormality, increase the value of the preset time period;

Specifically include: when there is an abnormality, reduce the size of the preset time period by a, the minimum is not less than T_min, when there is no abnormality, increase the size of the preset time period by b, the maximum is not greater than T_max, a and b The value is preset in advance, and the value range of the preset time period is (T_min, T_max); this can reduce energy consumption while ensuring the accuracy of abnormal detection of grape storage.

The method for monitoring freshness of table grapes in a controlled atmosphere storage at low temperature also includes:

In response to the instructions issued by people through mobile terminals and cloud servers, the detection of abnormalities in grape storage is started.

After the first storage time and the second storage time of the grapes based on the time node, after judging whether there is an abnormality in the grape storage at the time node, it also includes:

When there is an abnormality, send an abnormal prompt message to the mobile terminal, and further identify whether there is bacterial infection or frost on the grape body. If bacterial infection or frosting is found on the grape body, sterilize or defrost the grape body operate;

When no bacterial infection or frost is found on the grape body, a prompt message is sent to the mobile terminal to remind people to check whether there is a problem with the on-site equipment, including whether the temperature and humidity sensor is normal, check the machine vision equipment, sugar detector, acidity detector, phenol Check whether the substance concentration detector is normal.

The method for monitoring freshness of table grapes in a controlled atmosphere storage at low temperature also includes:

After the grapes are stored in the corresponding position in the warehouse, start counting the stored time, and when the storage time reaches the preset time point or the remaining estimated storage time reaches the preset time point, a prompt message is sent to the corresponding mobile terminal. When the maximum storage safety period is reached, an alarm message is sent to the mobile terminal.

The method for monitoring freshness of table grapes in a controlled atmosphere storage at low temperature also includes:

Obtain the location of the controlled atmosphere warehouse and the external weather information, and select the working time of the ventilation equipment based on the location and external weather information;

Based on the external and internal parameter information, set the working time period of the ventilation equipment;

The parameter information of the outside world and inside the warehouse includes the temperature and humidity of the outside world, the concentration of carbon dioxide, oxygen concentration, temperature, and humidity in the warehouse, and the volume in the warehouse that needs to be ventilated.

According to another aspect of the present invention, there is also provided a low-temperature fresh-keeping monitoring system for table grapes in a controlled atmosphere storage, the structure of which is shown in Figure 2, including:

Control module, ventilation module, storage location management module, information collection module, sterilization module, defrosting module, cloud server, mobile terminal;

The information collection module utilizes machine vision equipment and detection equipment to obtain the first maturity degree of grapes every preset time period;

The control module obtains the first storage time of the preset time node based on the first maturity; obtains the second storage time of the time node based on the storable time experience change curve; according to the first storage time and the second storage time, Determine whether there is an abnormality in grape storage;

The storage location management module assigns a storage location to the grapes based on the variety information of the grapes and the third storage time;

The ventilation module realizes automatic ventilation in the storage under the control of the control module.

The location management module assigns storage locations to grapes based on the variety information of the grapes and the third storage time, including: storing grapes of different varieties in different preset areas, in the different preset areas, according to the third The storage time assigns the storage locations of grapes of the same variety in sequence. The storage location of grapes with a long storage time is relatively inside and away from the door and aisle, and the storage location of grapes with a short storage time is relatively outside, close to the door and aisle;

The variety information of the grapes is obtained based on machine vision equipment identification; the machine vision equipment is specifically a camera;

The third storage time refers to the initial estimated maximum storage time, and obtains the second maturity degree of grapes based on machine vision equipment and detection equipment, and obtains the third storage time in combination with the second maturity degree; Degree refers to the initial ripeness of the grapes.

The storage location management module will also collect storage batches, grape varieties, storage locations, storage time, stored time, estimated storage time, and send the above data information to the control module.

The ventilation module specifically includes a number of ventilation fans evenly distributed in the controlled atmosphere storage;

The automatic ventilation in the warehouse under the control of the control module includes: the control module sets the ventilation time point of the ventilation module based on the location of the controlled atmosphere warehouse and the external weather information; the control module also Based on the external and internal parameter information, the length of time period for the ventilation equipment to work is set; the external and internal parameter information includes external temperature, humidity, carbon dioxide concentration, oxygen concentration, temperature, humidity in the storage, The volume to be ventilated.

The detection equipment includes a sugar detector, an acidity detector, and a phenolic substance concentration detector; except the detection equipment, the information collection module also includes a temperature sensor, a humidity sensor, a carbon dioxide concentration sensor, an oxygen concentration sensor, and a position sensor 1. An external weather information acquisition module, the information acquisition module sends the collected data information to the control module.

Among them, temperature sensors, humidity sensors, carbon dioxide concentration sensors, and oxygen concentration sensors are installed in the warehouse to detect temperature, humidity, carbon dioxide concentration, and oxygen concentration in the storage environment; temperature sensors and humidity sensors are installed outside the warehouse to detect Temperature and humidity information of the external environment.

After the control module judges whether there is an abnormality in grape storage according to the first storage time and the second storage time, the control module further includes: when there is an abnormality, reducing the value of the preset time period, and when there is no abnormality, increasing the preset value. The value of the time period.

After the control module judges whether there is an abnormality in grape storage according to the first storage time and the second storage time, it also includes: when there is an abnormality, start the sterilization and defrosting module to perform operations or prompt people to check whether the on-site equipment is abnormal.

The control module will collect and store relevant data information and send it to the cloud server, and people can query or obtain the above-mentioned relevant data information through the mobile terminal;

The relevant data information includes storage batches, grape varieties, storage locations, storage time, storage time, estimated storage time, temperature and humidity information in the storage, carbon dioxide concentration information in the storage, oxygen concentration information in the storage, prompt information, Alarm information, the real estimated maximum storage time of grapes, and external weather information.

The invention provides a low-temperature preservation monitoring system and method for fresh grapes in a controlled atmosphere storage; it can detect whether there is an abnormality in the storage process of grapes, and send the relevant data information of grape storage to a cloud server, which is convenient for people to use mobile terminals Real-time viewing and acquisition of grape storage conditions improves the security of the grape storage process; it allocates corresponding storage locations based on the grape variety and maturity information, which can reduce unnecessary grape self-loss and is conducive to long-term storage of grapes; By selecting and setting an appropriate ventilation time point and time period, the ventilation energy consumption can be effectively saved under the precise control of the ventilation process.

The above content is only the technical idea of the present invention, which cannot limit the protection scope of the present invention. Any changes made on the basis of the technical solution according to the technical idea proposed in the present invention shall fall under the protection of the claims of the present invention. within range.

Claims (10)

1. a method for monitoring freshness in a controlled atmosphere storage of fresh table grapes, characterized in that, comprising the following steps: Every preset time period, using machine vision equipment and detection equipment to obtain the first maturity of grapes; Obtaining a first storage time of a preset time node based on the first maturity; Obtaining the second storage time of the time node based on the storable time experience change curve; According to the first storage time and the second storage time, it is judged whether there is abnormality in grape storage. 2. The method according to claim 1, characterized in that, the storable time experience change curve refers to the estimated maximum storable time change curve of grape experience in the normal storage process of the controlled atmosphere warehouse. 3. method according to claim 2, is characterized in that, described every preset time period, before utilizing machine vision equipment and detection equipment to obtain the first degree of ripeness of grape, also comprises: Use machine vision equipment to identify grape variety information; Obtain the second maturity degree of grapes based on machine vision equipment and detection equipment, and combine the second maturity degree to obtain the third storage time of grapes; A storage location is assigned to the grapes based on the variety information of the grapes and the third storage time. 4. The method according to claim 3, characterized in that, after determining whether there is an abnormality in grape storage according to the first storage time and the second storage time, further comprising: When there is an abnormality, decrease the value of the preset time period, and when there is no abnormality, increase the value of the preset time period. 5. The method according to claim 3, characterized in that, the low-temperature fresh-keeping monitoring method of the controlled atmosphere storage of the table grapes, further comprising: Obtain the location of the controlled atmosphere warehouse and the external weather information, and select the working time of the ventilation equipment based on the location and external weather information; Based on the external and internal parameter information, set the working time period of the ventilation equipment. 6. A low-temperature fresh-keeping monitoring system for a controlled atmosphere storage of fresh grapes, based on the method described in any one of claims 1-5, characterized in that it comprises: a control module, a ventilation module, a storage location management module, and information collection module, sterilization module, defrosting module, cloud server, mobile terminal; The information collection module utilizes machine vision equipment and detection equipment to obtain the first maturity degree of grapes every preset time period; The control module obtains the first storage time of the preset time node based on the first maturity; obtains the second storage time of the time node based on the storable time experience change curve; according to the first storage time and the second storage time, Determine whether there is an abnormality in grape storage; The storage location management module assigns a storage location to the grapes based on the variety information of the grapes and the third storage time; The ventilation module realizes automatic ventilation in the storage under the control of the control module. 7. The system according to claim 6, wherein the location management module assigns storage locations to grapes based on the variety information of the grapes and the third storage time, comprising: storing grapes of different varieties in different preset area, in the different preset areas, according to the third storage time, the storage positions of grapes of the same variety are allocated in sequence, the storage positions of grapes with a long storage time are relatively inside, and away from the doorway and aisle, and the storage positions of grapes with a short storage time The storage location is relatively outside, close to the door and aisle. 8. The system according to claim 7, wherein the automatic ventilation in the warehouse is realized under the control of the control module, comprising: the control module determines based on the location of the controlled atmosphere warehouse and the external weather information. Set the ventilation time point of the ventilation module; the control module also sets the working time period of the ventilation device based on the external and internal parameter information. 9. The system according to claim 8, after the control module determines whether there is an abnormality in grape storage according to the first storage time and the second storage time, it also includes: when there is an abnormality, then start the sterilization and defrosting modules to carry out Work or remind people to check whether the field equipment is abnormal. 10. The system according to claim 8, said utilizing machine vision equipment and detection equipment to obtain the first degree of maturity of grapes comprises: utilizing machine vision equipment to collect grape varieties, color and luster, and average size, utilizing a sugar detector, The acidity detector and the phenolic substance concentration detector are used to collect the sugar content, acidity, and phenolic substance concentration information of the grapes, and the maturity of the grapes is obtained based on the above collected information.

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