CN105095664A - Method and system for calculating fruit shelf life - Google Patents

Abstract

The invention discloses a method and system for calculating the shelf life of fruits based on the synchronous monitoring of internal and external temperatures of a cold chain link, which can effectively calculate the shelf life of fruits to be put on shelves. The method includes: using a probe-type temperature sensor to collect in real time the temperature data inside the fruit to be calculated for shelf life at multiple positions at different times in the pre-cooling, refrigerating and refrigerating transportation links; using the temperature sensor to collect real-time pre-cooling, refrigerating and refrigerating The ambient temperature data outside the fruit at different times in the transportation link; according to the temperature data inside the fruit at multiple locations at the different times, the temperature data inside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, According to the ambient temperature data outside the fruit at different times, the ambient temperature data outside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, and the shelf life of the fruit is calculated according to the preset fruit shelf life prediction model. shelf life.

Description

Calculation method and system of fruit shelf life

technical field

The invention relates to the technical field of fruit quality monitoring, in particular to a calculation method and system for fruit shelf life based on synchronous monitoring of internal and external temperatures of cold chain links.

Background technique

Fruits such as watermelons, melons, apples, citrus, and pears need to go through cold chain links such as pre-cooling, refrigeration, and refrigerated transportation in order to maintain their post-harvest quality and prolong storage time. After the shelves are put on sale, the price of the fruit is often determined by artificially observing the quality of the fruit. As a result, it is easy to appear that the fruit quality is better before a certain day and the price is higher, and then the fruit deteriorates rapidly and no one cares about it. This makes the fruit sales. Profits are lower.

Therefore, in order to ensure the profit of fruit sales, it is an urgent problem to calculate the shelf life of fruits after the cold chain link to guide the sales of fruits, but there is currently no effective method to calculate the shelf life of fruits after the cold chain link.

Contents of the invention

In view of this, the embodiments of the present invention provide a method and system for calculating the shelf life of fruits based on synchronous monitoring of the internal and external temperatures of the cold chain link, which can effectively calculate the shelf life of fruits to be put on shelves.

For this purpose, the present invention proposes a kind of fruit shelf life calculation system based on the synchronous monitoring of the internal and external temperature of the cold chain link, including:

The first temperature convergence and transmission terminal, the second temperature convergence and transmission terminal, the third temperature convergence and transmission terminal, the shelf life calculation module, a plurality of first temperature sensors and a plurality of second temperature sensors; wherein,

The plurality of first temperature sensors are used for real-time collection of temperature data inside the fruit to be calculated for shelf life at multiple locations at different times during pre-cooling, refrigeration and refrigerated transportation;

The plurality of second temperature sensors are used for real-time collection of ambient temperature data outside the fruit at different times during pre-cooling, refrigeration and refrigerated transportation;

The first temperature aggregation and transmission terminal is used to acquire the internal temperature data of the fruit to be calculated for shelf life at multiple positions collected by the multiple first temperature sensors in the pre-cooling link and the multiple second temperature sensors. The ambient temperature data outside the fruit at different times collected by the temperature sensor is transmitted to the shelf life calculation module;

The second temperature aggregation and transmission terminal is used to obtain the temperature data inside the fruit at different times collected by the plurality of first temperature sensors in the cold storage link, which is different from the temperature data collected by the plurality of second temperature sensors. Ambient temperature data outside the fruit at all times, and transmitted to the shelf life calculation module;

The third temperature aggregation and transmission terminal is used to obtain the temperature data inside the fruit at different times collected by the multiple first temperature sensors in the refrigerated transportation link and the temperature data collected by the multiple second temperature sensors. The ambient temperature data outside the fruit at different times is transmitted to the shelf life calculation module;

The shelf life calculation module is used to obtain the temperature data inside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation according to the received temperature data inside the fruit at multiple locations at different times. According to the ambient temperature data of the fruit outside at different times, the ambient temperature data of the fruit outside at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, and the shelf life of the fruit is calculated according to the preset fruit shelf life prediction model , the input of the fruit shelf life prediction model is the temperature data inside the fruit at multiple positions at different times in the whole process of precooling, refrigeration and refrigerated transportation and the corresponding environmental temperature data outside the fruit, and the output is the shelf life of the fruit.

On the other hand, the present invention proposes a method for calculating the shelf life of fruits based on synchronous monitoring of the temperature inside and outside the cold chain link, including:

Use probe-type temperature sensors to collect real-time temperature data inside the fruit to be calculated for shelf life at multiple locations at different times during pre-cooling, refrigeration and refrigerated transportation;

Use temperature sensors to collect real-time data on the ambient temperature outside the fruit at different times during pre-cooling, refrigeration and refrigerated transportation;

According to the temperature data inside the fruit at multiple locations at different times, the temperature data inside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, and according to the ambient temperature data outside the fruit at different times Obtain the ambient temperature data outside the fruit at different times in the whole process of precooling, refrigeration and refrigerated transportation, and calculate the shelf life of the fruit according to the preset fruit shelf life prediction model. The input of the fruit shelf life prediction model is The temperature data inside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation and the corresponding ambient temperature data outside the fruit are output as the shelf life of the fruit.

The method and system for calculating the shelf life of fruits based on the synchronous monitoring of the internal and external temperatures of the cold chain link described in the embodiments of the present invention collect in real time the inside of the fruit to be calculated for the shelf life at multiple locations at different times in the pre-cooling, refrigeration and refrigerated transportation links. The temperature data of the temperature data and the ambient temperature data outside the fruit, according to the temperature data inside the fruit at multiple positions at different times, the temperature data inside the fruit at different times during the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, According to the ambient temperature data outside the fruit at different times, the ambient temperature data outside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, and the shelf life of the fruit is calculated according to the preset fruit shelf life prediction model. The shelf life can effectively calculate the shelf life of the fruits to be put on the shelf, so as to provide guidance for sales staff to formulate sales plans.

Description of drawings

Fig. 1 is the block structure schematic diagram of an embodiment of the calculation system of fruit shelf life based on the synchronous monitoring of temperature inside and outside the cold chain link of the present invention;

Fig. 2 is the front perspective view of the probe type sensor of the internal temperature of the fruit in another embodiment of the calculation system of the fruit shelf life based on the synchronous monitoring of the temperature inside and outside the cold chain link of the present invention;

Fig. 3 is the electronic structure diagram of Fig. 2;

Fig. 4 is the front perspective view of the fruit external temperature sensor in another embodiment of the calculation system of the fruit shelf life based on the synchronous monitoring of the temperature inside and outside the cold chain link of the present invention;

Fig. 5 is the electronic structure diagram of Fig. 4;

Fig. 6 is a front perspective view of the temperature convergence and transmission terminal in another embodiment of the fruit shelf life calculation system based on the synchronous monitoring of the temperature inside and outside the cold chain link of the present invention;

Fig. 7 is the electronic structure diagram of Fig. 6;

Fig. 8 is the working flowchart of the shelf life calculation module in Fig. 1;

Fig. 9 is a schematic flowchart of an embodiment of the method for calculating the shelf life of fruits based on the synchronous monitoring of the internal and external temperatures of the cold chain link in the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, this embodiment discloses a fruit shelf life calculation system based on synchronous monitoring of internal and external temperatures of the cold chain link, including:

The first temperature convergence and transmission terminal A, the second temperature convergence and transmission terminal B, the third temperature convergence and transmission terminal C, the shelf life calculation module D, a plurality of first temperature sensors E and a plurality of second temperature sensors F; ,

The plurality of first temperature sensors E are used to collect in real time the temperature data inside the fruit to be calculated for the shelf life at multiple positions at different times in the pre-cooling, refrigeration and refrigerated transportation links;

The plurality of second temperature sensors F are used for real-time collection of ambient temperature data outside the fruit at different times during pre-cooling, refrigeration and refrigerated transportation;

The first temperature aggregation and transmission terminal A is used to acquire the internal temperature data of the fruit to be calculated for the shelf life at multiple positions at different times collected by the multiple first temperature sensors E in the pre-cooling link and the multiple The ambient temperature data outside the fruit at different times collected by the second temperature sensor F, and transmitted to the shelf life calculation module;

The second temperature aggregation and transmission terminal B is used to obtain the temperature data inside the fruit at different times collected by the plurality of first temperature sensors E in the cold storage link and the plurality of second temperature sensors F The collected ambient temperature data outside the fruit at different times is transmitted to the shelf life calculation module;

The third temperature aggregation and transmission terminal C is used to obtain the temperature data inside the fruit at multiple locations at different times collected by the multiple first temperature sensors E in the refrigerated transportation link and the multiple second temperature sensors The ambient temperature data outside the fruit at different times collected by F, and transmitted to the shelf life calculation module;

The shelf life calculation module D is used to obtain the temperature data inside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation according to the received temperature data inside the fruit at multiple locations at different times. According to the ambient temperature data outside the fruit at different times, the ambient temperature data outside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, and the shelf life of the fruit is calculated according to the preset fruit shelf life prediction model. The input of the fruit shelf life prediction model is the temperature data inside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation and the corresponding ambient temperature data outside the fruit, and the output is the shelf life of the fruit.

In the embodiment of the present invention, the first temperature sensor may be a probe-type sensor, which is used to detect the temperature inside the fruit, and send the data to the temperature aggregation and transmission terminal through a wireless transmission network with a specified data protocol. The fruit internal temperature probe sensor (the front perspective view is shown in Figure 2, and the electronic structure diagram is shown in Figure 3) includes a temperature detection part and a data processing part. The temperature detection part is composed of a hollow metal probe 1, an internal microprocessor, etc., a micro temperature sensor 2, and a soft data line 3. The data processing part is connected to the temperature detection part through a soft data line, including a metal shell 4, an RF antenna 5, an LED Miniature display screen 6, power charging port 7, and pluggable power charger. The second temperature sensor is a fruit external temperature sensor (the front perspective view is as shown in Figure 4, and the electronic structure diagram is as shown in Figure 5), which is used to detect the external ambient temperature of the fruit, including metal shell 8 and internal microprocessor etc., temperature sensor Probing head 9, RF antenna 10, LED miniature display screen 11, power charging port 12, and pluggable power charger. The temperature aggregation and transmission terminal is used to collect the data collected by the fruit internal temperature probe sensor and the fruit external temperature sensor to the terminal through RF wireless radio frequency. Calculation module sends. The temperature aggregation and transmission terminal (the front perspective view is shown in Figure 6, and the electronic structure diagram is shown in Figure 7) includes a metal casing 13 and an internal microprocessor, etc., WIFI antenna 14, RF antenna 15, GPRS antenna 16, SIM card slot 17 , a power charging port 18, and a pluggable power charger. The shelf life calculation module provides the temperature monitoring and management functions for the pre-cooling process, cold storage process and cold storage transportation process, and can include wireless communication sub-modules, pre-cooling management sub-modules, cold storage management sub-modules, cold transport management sub-modules, cold storage The internal and external temperature analysis of the whole process of the chain.

The wireless communication sub-module provides the function of receiving temperature aggregation and transmitting the temperature monitoring data transmitted by the terminal. The data communication format is defined in the following table:

The pre-cooling management sub-module can include functions of pre-cooling monitoring, pre-cooling warning, and synchronous analysis of internal and external temperatures. When the temperature reaches the optimum temperature, it will issue a command to complete the pre-cooling, and issue a stop command to the pre-cooling equipment, and at the same time notify the staff to put the product into storage; When the pre-cooling unit sets the temperature, an alarm signal is sent to notify the staff to check; the internal and external temperature synchronous analysis function displays the change curve of the internal and external temperature of the fruit during the pre-cooling process in the form of a graph, and analyzes the cooling time of different types of fruits and the change of the internal and external temperature difference The trend and the time required to reach the same temperature are updated to update the ideal time required for pre-cooling monitoring.

The cold storage management sub-module includes functions such as multi-point temperature monitoring, synchronous monitoring and analysis of the internal and external temperature of fruits, etc. In the multi-point temperature monitoring, according to the size of the cold storage, the internal and external temperature monitoring sensors are arranged near the refrigeration equipment according to the distance from near to far, and simulated in this module The storage location and equipment layout display real-time temperature changes in a three-dimensional model. When the difference between the internal temperature of the product and the external temperature is too large, or the external temperature of the product is too large, an alarm message will be sent to remind the staff to perform troubleshooting and product inspection; The temperature synchronous monitoring function displays the temperature change curve inside and outside the fruit in the form of a graph, provides the staff with an intuitive way to check the warehouse, and finds the relationship between the temperature difference distance and the refrigeration equipment, stacking method, etc. through chart analysis, providing the best stacking scheme.

The cold transport management sub-module includes the functions of internal and external temperature monitoring of fruit, synchronous monitoring and analysis of internal and external temperature of fruit, etc. The internal and external temperature monitoring of fruit provides real-time remote monitoring of the internal and external temperature of fruit during refrigerated transportation, and issues an alarm signal for abnormal temperature and notifies delivery The staff checks and ensures that the refrigeration of the refrigerated truck is working normally; the synchronous monitoring and analysis of the temperature inside and outside the fruit shows the temperature changes inside and outside the fruit in the form of graphs.

Analysis of the internal and external temperature of fruit in the whole process of cold chain Display the internal and external temperature of fruit in the process of pre-cooling, refrigeration and cold transportation in the form of graphs and tables, and combine the measured temperature with the existing temperature-related shelf life prediction model to obtain the shelf life of the fruit period for the sales staff to formulate a reasonable sales plan.

Figure 8 is the workflow of the shelf life calculation module. After the system starts, turn on the wireless communication monitoring module, and you can enter the pre-cooling management sub-module, cold storage management sub-module, cold transportation management sub-module and the whole process of cold chain fruit internal and external temperature analysis module; in the pre-cooling management sub-module, the fruit inside The temperature and the external temperature are monitored in real time at the same time. When the internal temperature and the external temperature are consistent within the threshold, it is judged whether the optimal temperature for fruit pre-cooling is reached. After reaching the temperature, it is necessary to judge whether it is timed out. If it is timed out, it will alarm and check whether the timeout Affect the effect of pre-cooling, it is also necessary to judge overtime during temperature monitoring. If the ideal pre-cooling time is exceeded and the goal is not achieved, an alarm may be issued to check whether the pre-cooling equipment is faulty; in the cold storage management sub-module, the arranged The internal and external temperature monitoring sensors are displayed in 3D modeling, while monitoring the internal and external temperature, calculating the difference between the internal and external temperature in real time, and judging whether the temperature is normal, whether the internal and external temperature difference is within a reasonable threshold, if not, an alarm is required, and if it is, continue monitoring ;In the management of cold transportation, the internal and external temperature of the fruit in the refrigerated compartment is monitored in real time, and it is judged whether the temperature is normal and whether the difference between the internal and external temperature is within a reasonable threshold. After the first stage is completed, the sales staff can query and analyze the internal and external temperature of the whole cold chain process through the internal and external temperature analysis module of the whole cold chain process, and use the existing temperature-based fruit shelf life prediction model to calculate the shelf life, so as to formulate sales plan.

The fruit shelf life calculation system based on the synchronous monitoring of the internal and external temperature of the cold chain link described in the embodiment of the present invention collects in real time the temperature inside the fruit to be calculated for the shelf life at multiple positions at different times in the pre-cooling, refrigeration and refrigerated transportation links data and the ambient temperature data outside the fruit, according to the temperature data inside the fruit at multiple locations at different times, the temperature data inside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, according to the temperature data inside the fruit at different times According to the ambient temperature data outside the fruit at different times, the ambient temperature data outside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, and the shelf life of the fruit is calculated according to the preset fruit shelf life prediction model , can effectively calculate the shelf life of the fruit to be put on the shelf, so as to provide guidance for the sales staff to formulate sales plans.

Optionally, in another embodiment of the present invention based on the fruit shelf life calculation system based on the synchronous monitoring of the temperature inside and outside the cold chain link, the shelf life calculation module is also used to receive multiple The temperature data inside the fruit to be calculated for shelf life at the position and the ambient temperature data outside the fruit monitor whether the refrigeration equipment in the pre-cooling link is working normally and whether the pre-cooling is completed.

Optionally, in another embodiment of the present invention based on the fruit shelf life calculation system based on the synchronous monitoring of the internal and external temperatures of the cold chain link, the shelf life calculation module is also used to receive multiple locations at different times in the cold chain link. The temperature data inside the fruit and the ambient temperature data outside the fruit are used to calculate the temperature difference between the inside and outside of the same fruit at the same time in the cold storage process. According to the temperature data inside the fruit at different times in the cold storage process, the The ambient temperature data outside the fruit and the temperature difference between the inside and outside of the same fruit at the same time in the cold storage link monitor whether the refrigeration equipment in the cold storage link is working normally.

Optionally, in another embodiment of the present invention based on the fruit shelf life calculation system based on the synchronous monitoring of the internal and external temperature of the cold chain link, the shelf life calculation module is also used to calculate the The first temperature sensor and the plurality of second temperature sensors perform three-dimensional modeling to obtain a three-dimensional model, and display the real-time temperature data collected by the plurality of first temperature sensors and the plurality of second temperature sensors.

Optionally, in another embodiment of the present invention based on the fruit shelf life calculation system based on the synchronous monitoring of the temperature inside and outside the cold chain link, the shelf life calculation module is also used to receive multiple The temperature data inside the fruit at the position and the ambient temperature data outside the fruit are used to calculate the temperature difference between the inside and outside of the same fruit at the same time in the refrigerated transportation link, and according to the temperature data inside the fruit at multiple positions at different times in the refrigerated transportation link 1. The ambient temperature data outside the fruit and the temperature difference between the inside and outside of the same fruit at the same time in the refrigerated transportation link monitor whether the refrigeration equipment in the refrigerated transportation link is working normally.

The present invention is applicable to multiple links that require temperature control, such as precooling, refrigerated storage, and refrigerated transportation of cold chain logistics. Through the synchronous real-time monitoring of the internal temperature and external temperature of the fruit, real-time monitoring of the inside of the fruit can be realized in the precooling link. The effect of temperature cooling is to complete the pre-cooling after confirming that the cooling meets the requirements; in the refrigerated storage link, through multi-point synchronous monitoring of the temperature inside the fruit and the temperature of the cold storage, it is detected in real time whether the operation of the cold storage is abnormal and whether the internal and external temperatures of the fruit are consistent to ensure The fruit is stored at a suitable temperature; in the refrigerated transportation link, through the remote real-time monitoring of the internal temperature of the fruit and the temperature of the compartment, it is detected in real time whether the refrigeration unit in the compartment is working normally and whether the temperature environment of the compartment meets the requirements, so as to ensure that the fruit is transported. temperature environment.

A specific embodiment of the present invention will be described in detail below.

A specific embodiment of the present invention based on the calculation system of the fruit shelf life of the synchronous monitoring of the internal and external temperature of the cold chain link comprises the following steps:

1. Temperature monitoring and management of pre-cooling process

(1) Put 300 boxes of post-harvest melons on 6 trays, randomly select a melon in a box from each tray, insert the internal temperature probe sensor of the fruit, and put the external temperature sensor of the fruit in this box, the total Arrange 6 fruit internal temperature probe sensors and fruit external temperature sensors;

(2) Put 6 trays of melons into the pre-cooling room for differential pressure pre-cooling, and set the pre-cooling temperature to 8°C;

(3) The shelf life calculation module is installed on the computer outside the pre-cooler, and a temperature aggregation and transmission terminal is installed at the door of the pre-cooler;

(4) Open the pre-cooling management sub-module of the shelf life calculation module, and check the real-time temperature change curve inside and outside the fruit;

(5) When it is found that the pre-cooling reminder is completed, turn off the pre-cooling equipment; if an alarm reminder is found and the temperature cannot be lowered to the specified temperature for a long time, it is necessary to troubleshoot the refrigeration equipment;

(6) After the pre-cooling is completed, transfer the 6 trays to the cold storage;

2. Temperature monitoring during refrigeration

(1) Put the melons with 6 trays of fruit internal temperature probe type sensor and fruit external temperature sensor into the cold storage for 5 days, and the temperature of the cold storage is set to 8°C;

(2) A temperature aggregation and transmission terminal is installed at the door of the refrigerator;

(3) The warehouse keeper can check the monitoring data of the internal and external temperature of 6 pairs of fruits in the 6 pallets of the cold storage at any place and any time through the cold storage management sub-module of the shelf life calculation module, as well as the temperature change curve;

(4) When it is found that the temperature difference between the inside and outside of a certain tray is greater than the threshold, the storekeeper receives an alarm signal, troubleshoots the various refrigeration equipment in the cold storage, and transfers the overheated tray of fruit to a place closer to the refrigeration equipment for better cooling effect good area;

3. Temperature monitoring of refrigerated trucks

(1) Put 6 pallets into the refrigerated truck;

(2) A temperature aggregation and transmission terminal is placed in the cockpit of the refrigerated truck;

(3) Through the cold transport management sub-module of the shelf life calculation module, the production enterprise can remotely check the internal and external temperature of the 6 pairs of fruits in the compartment in real time. When the temperature is found to be too high or too low, it can call to remind the accompanying delivery personnel of the refrigerated truck to check Refrigeration facilities for refrigerated vehicles;

4. Analysis of internal and external temperature of fruit in the whole process of cold chain

(1) Use the internal and external temperature monitoring data of the shelf life calculation module to obtain 6 pairs of internal and external temperature change curves for the whole process of melon from pre-cooling to refrigerated transportation;

(2) The sales staff inspected the temperature changes intuitively and found that there was no abnormal temperature, so they could judge that the freshness of the melons was good, and there were more than 20 days of remaining shelf life under the same low temperature storage, and based on this, the melons were sold and sold. promotion.

The present invention has following effect:

(1) Adopt equipment that can support the multi-link cold chain process temperature monitoring of pre-cooling, cold storage and cold transportation, and can obtain the temperature inside and outside the fruit, as well as the temperature difference in real time, and obtain the whole process of fruit from pre-cooling to the end of cold transportation The temperature curve inside and outside the fruit, through the analysis of the temperature curve, can judge whether the cold chain environment of the fruit is ideal, and provide a theoretical reference for the formulation of subsequent sales plans.

(2) It can effectively improve the ability to monitor the temperature environment of the fruit cold chain, ensure that the fruit is in an effective cold chain temperature condition, and provide safeguard measures for ensuring the quality and safety of the fruit and improving its shelf life.

As shown in Figure 9, this embodiment discloses a method for calculating the shelf life of fruits based on synchronous monitoring of the temperature inside and outside the cold chain link, including:

S1. Use the probe-type temperature sensor to collect in real time the temperature data inside the fruit to be calculated for the shelf life at multiple locations at different times in the pre-cooling, refrigeration and refrigerated transportation links;

S2. Using the temperature sensor to collect in real time the environmental temperature data outside the fruit mentioned in the pre-cooling, refrigerating and refrigerated transportation links at different times;

S3. Obtain the temperature data inside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation according to the temperature data inside the fruit at multiple locations at the different times, and according to the external environment of the fruit at the different times The temperature data obtains the ambient temperature data outside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation, and calculates the shelf life of the fruit according to the preset fruit shelf life prediction model. The fruit shelf life prediction model The input is the temperature data inside the fruit at multiple locations at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation, and the corresponding ambient temperature data outside the fruit, and the output is the shelf life of the fruit.

The method for calculating the shelf life of fruits based on the synchronous monitoring of the temperature inside and outside the cold chain link described in the embodiment of the present invention collects the internal temperature of the fruit to be calculated for the shelf life at multiple positions at different times in the pre-cooling, refrigeration and refrigerated transportation links in real time. data and the ambient temperature data outside the fruit, according to the temperature data inside the fruit at multiple locations at different times, the temperature data inside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, according to the temperature data inside the fruit at different times According to the ambient temperature data outside the fruit at different times, the ambient temperature data outside the fruit at different times in the whole process of pre-cooling, refrigeration and refrigerated transportation are obtained, and the shelf life of the fruit is calculated according to the preset fruit shelf life prediction model , can effectively calculate the shelf life of the fruit to be put on the shelf, so as to provide guidance for the sales staff to formulate sales plans.

Optionally, in another embodiment of the present invention, based on the calculation method of the fruit shelf life of the synchronous monitoring of the temperature inside and outside the cold chain link, it also includes:

According to the temperature data inside the fruit to be calculated for shelf life at different times in the pre-cooling link and the ambient temperature data outside the fruit, it is monitored whether the refrigeration equipment in the pre-cooling link is working normally and whether the pre-cooling is completed.

Optionally, in another embodiment of the method for calculating the shelf life of fruits based on the synchronous monitoring of the temperature inside and outside the cold chain link of the present invention, the fruit to be calculated according to the shelf life at multiple positions at different times in the pre-cooling link The internal temperature data and the ambient temperature data outside the fruit monitor whether the refrigeration equipment in the pre-cooling link works normally and whether the pre-cooling is completed, including:

For the temperature data inside the fruit to be calculated for shelf life at any time and any position in the pre-cooling link, it is judged whether the temperature data inside the fruit for shelf life calculation at this position at this time and the corresponding ambient temperature data outside the fruit are Equal, if equal, then judge whether the temperature data inside the fruit is equal to or greater than the preset temperature, if not, then judge whether the time it takes for the temperature data inside the fruit to reach the temperature data inside the fruit is greater than the preset time length, if not is greater than, complete the precooling, otherwise, if greater than, an alarm is given; and/or

At the moment corresponding to the preset duration, for the temperature data inside the fruit to be calculated for shelf life at any position in the pre-cooling link, determine the temperature data and Whether the ambient temperature data outside the corresponding fruit is equal, and whether it is equal to the preset temperature, if the temperature data inside the fruit is not equal to the ambient temperature data outside the corresponding fruit, or the temperature data inside the fruit If the temperature is equal to or greater than the preset temperature, or if the temperature data inside the fruit corresponds to the ambient temperature data outside the fruit, an alarm will be issued; otherwise, the pre-cooling will be completed.

Optionally, in another embodiment of the present invention, based on the calculation method of the fruit shelf life of the synchronous monitoring of the temperature inside and outside the cold chain link, it also includes:

Calculate the internal and external temperature difference of the same fruit at the same time in the cold storage link according to the temperature data inside the fruit at multiple positions at different times in the cold storage link and the ambient temperature data outside the fruit;

Whether the refrigerating equipment in the refrigerating link is working normally is monitored according to the temperature data inside the fruit at multiple locations at different times in the refrigerating link, the ambient temperature data outside the fruit, and the temperature difference between the inside and outside of the same fruit at the same time in the refrigerating link.

Optionally, in another embodiment of the present invention, based on the calculation method of the fruit shelf life of the synchronous monitoring of the temperature inside and outside the cold chain link, it also includes:

Calculate the internal and external temperature difference of the same fruit at the same time in the refrigerated transportation link according to the temperature data inside the fruit at multiple positions at different times in the refrigerated transportation link and the ambient temperature data outside the fruit;

Whether the refrigeration equipment in the refrigerated transportation link is working normally is monitored according to the temperature data inside the fruit at multiple locations at different times in the refrigerated transportation link, the ambient temperature data outside the fruit, and the temperature difference between the inside and outside of the same fruit at the same time in the refrigerated transportation link.

The present invention monitors the internal temperature of the fruit in real time through a probe-type temperature sensor with a real-time wireless transmission function; through an external temperature sensor with a real-time wireless transmission function, it monitors the ambient temperature outside the fruit in real time; the probe-type temperature sensor and the external temperature sensor adopt The same wireless communication protocol, through wireless communication and temperature aggregation and transmission terminal (supports both WIFI communication and GPRS communication, can be applied to a variety of environments) for data transmission, and through the temperature aggregation and transmission terminal to the shelf life calculation module Data transmission; by synchronously monitoring the internal and external temperature of the fruit and calculating the temperature difference, and judging the threshold value of the temperature difference, the cooling effect of the fruit can be determined and the refrigeration operation can be guided; by monitoring the internal and external temperature of the fruit at multiple points in the cold storage, the three-dimensional temperature of the cold storage can be carried out Display, and give an abnormal alarm according to the threshold of real-time monitoring temperature and temperature difference; by monitoring the internal and external temperature of the fruit in the refrigerated compartment, it can be judged whether the internal temperature of the fruit is within a reasonable range, and whether the compartment refrigeration equipment is working normally; The internal and external temperature curves of the whole process of the cold chain, and the shelf life calculated in combination with the existing fruit shelf life model, to formulate a reasonable sales plan; the fruit shelf life based on the synchronous monitoring of the internal and external temperature of the cold chain link described in the embodiment of the present invention The calculation method and system can realize the temperature information monitoring of the three cold chain stages of fruit pre-cooling, cold storage and cold transportation, improve the automation means, and realize the refined management of the fruit temperature in the process of pre-cooling, cold storage and cold transportation. Managing fruit quality offers a new approach.

Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention. within the bounds of the requirements.

Claims (10)

1. A fruit shelf life calculation system based on synchronous monitoring of internal and external temperatures of a cold chain link is characterized by comprising:

the system comprises a first temperature gathering and transmitting terminal, a second temperature gathering and transmitting terminal, a third temperature gathering and transmitting terminal, a shelf life calculating module, a plurality of first temperature sensors and a plurality of second temperature sensors; wherein,

the first temperature sensors are used for acquiring temperature data of the interior of the fruit to be subjected to shelf life calculation at a plurality of positions at different moments in the processes of precooling, refrigeration and refrigerated transportation in real time;

the plurality of second temperature sensors are used for acquiring environmental temperature data outside the fruits at different moments in precooling, refrigerating and refrigerated transportation links in real time;

the first temperature gathering and transmitting terminal is used for acquiring temperature data inside the fruits to be subjected to shelf life calculation at a plurality of positions at different moments and acquired by the plurality of first temperature sensors in the precooling link and environmental temperature data outside the fruits at different moments and acquired by the plurality of second temperature sensors in the precooling link, and transmitting the temperature data to the shelf life calculation module;

the second temperature gathering and transmitting terminal is used for acquiring temperature data inside the fruits at a plurality of positions at different moments and acquired by the plurality of first temperature sensors in the refrigeration link and environmental temperature data outside the fruits at different moments and acquired by the plurality of second temperature sensors in the refrigeration link, and transmitting the temperature data to the shelf life calculating module;

the third temperature gathering and transmitting terminal is used for acquiring the temperature data inside the fruits at a plurality of positions at different moments and acquired by the plurality of first temperature sensors and the environmental temperature data outside the fruits at different moments and acquired by the plurality of second temperature sensors in the refrigeration transportation link, and transmitting the temperature data to the shelf life calculating module;

the shelf life calculation module is used for obtaining the internal temperature data of the fruits at different moments in the whole process of the precooling, refrigerating and refrigerating transportation links according to the received internal temperature data of the fruits at the positions at different moments, obtaining the external environmental temperature data of the fruits at different moments in the whole process of the precooling, refrigerating and refrigerating transportation links according to the received external environmental temperature data of the fruits at different moments, calculating the shelf life of the fruits according to a preset fruit shelf life prediction model, and outputting the shelf life of the fruits by inputting the fruit shelf life prediction model into the internal temperature data of the fruits at the positions at different moments in the whole process of the precooling, refrigerating and refrigerating transportation links and the corresponding external environmental temperature data of the fruits.

2. The system for calculating the shelf life of the fruits based on the synchronous monitoring of the internal temperature and the external temperature of the cold chain link according to claim 1, wherein the shelf life calculation module is further configured to monitor whether the refrigeration equipment of the pre-cooling link works normally and whether the pre-cooling is completed according to the received temperature data inside the fruits and the ambient temperature data outside the fruits, wherein the temperature data is to be subjected to shelf life calculation at a plurality of positions at different times in the pre-cooling link.

3. The system for calculating fruit shelf life based on synchronous monitoring of internal and external temperatures of a cold chain link according to claim 1, wherein the shelf life calculation module is further configured to calculate an internal and external temperature difference of the same fruit at the same time in the cold storage link according to the received internal temperature data of the fruit at a plurality of positions at different times in the cold storage link and the received external environmental temperature data of the fruit, and monitor whether refrigeration equipment in the cold storage link is working normally according to the internal temperature data of the fruit at a plurality of positions at different times in the cold storage link, the external environmental temperature data of the fruit and the internal and external temperature difference of the same fruit at the same time in the cold storage link.

4. The fruit shelf life calculation system based on synchronous monitoring of the internal temperature and the external temperature of the cold chain link according to claim 3, wherein the shelf life calculation module is further configured to perform three-dimensional modeling on the plurality of first temperature sensors and the plurality of second temperature sensors in the refrigerator in the refrigeration link to obtain a three-dimensional model, and display real-time temperature data acquired by the plurality of first temperature sensors and the plurality of second temperature sensors.

5. The system for calculating fruit shelf life based on synchronous monitoring of internal and external temperatures of a cold chain link according to claim 1, wherein the shelf life calculation module is further configured to calculate an internal and external temperature difference of the same fruit at the same time in the cold transportation link according to the received internal temperature data of the fruit at a plurality of positions at different times in the cold transportation link and the received external environmental temperature data of the fruit, and monitor whether refrigeration equipment in the cold transportation link is working normally according to the internal temperature data of the fruit at a plurality of positions at different times in the cold transportation link, the external environmental temperature data of the fruit and the internal and external temperature difference of the same fruit at the same time in the cold transportation link.

6. A fruit shelf life calculation method based on synchronous monitoring of internal and external temperatures in a cold chain link is characterized by comprising the following steps:

acquiring temperature data of the interior of the fruit to be subjected to shelf life calculation at a plurality of positions at different moments in the processes of precooling, refrigerating and refrigerated transportation in real time by using a probe type temperature sensor;

acquiring environmental temperature data outside the fruits at different moments in precooling, refrigerating and refrigerating transportation links in real time by using a temperature sensor;

obtaining the internal temperature data of the fruit at different moments in the whole process of the precooling, refrigerating and refrigerating transportation links according to the internal temperature data of the fruit at the positions at different moments, obtaining the external environmental temperature data of the fruit at different moments in the whole process of the precooling, refrigerating and refrigerating transportation links according to the external environmental temperature data of the fruit at different moments, calculating the shelf life of the fruit according to a preset fruit shelf life prediction model, and outputting the shelf life of the fruit by inputting the internal temperature data of the fruit at the positions at different moments in the whole process of the precooling, refrigerating and refrigerating transportation links and the corresponding external environmental temperature data of the fruit into the fruit shelf life prediction model.

7. The method for calculating the shelf life of fruits based on the synchronous monitoring of the internal temperature and the external temperature of the cold chain link according to claim 6, further comprising the following steps:

and monitoring whether the refrigeration equipment in the precooling link works normally and whether precooling is finished or not according to the temperature data inside the fruit and the environmental temperature data outside the fruit at a plurality of positions to be subjected to shelf life calculation at different moments in the precooling link.

8. The method for calculating the fruit shelf life based on the synchronous monitoring of the internal temperature and the external temperature of the cold chain link according to claim 7, wherein the monitoring of whether the precooling refrigeration equipment works normally and whether precooling is completed according to the internal temperature data of the fruit and the external environmental temperature data of the fruit at a plurality of positions at different moments of the precooling link, comprises:

for temperature data in the fruit to be subjected to shelf life calculation at any position of the precooling link at any moment, judging whether the temperature data in the fruit to be subjected to shelf life calculation at the position at the moment is equal to corresponding environment temperature data outside the fruit or not, if so, judging whether the temperature data in the fruit is equal to a preset temperature or not, if not, judging whether the time length for the temperature data in the fruit to reach the temperature data in the fruit is greater than the preset time length or not, if not, completing precooling, otherwise, alarming; and/or

The method comprises the steps of judging whether temperature data inside fruits to be subjected to shelf life calculation at any position of a precooling link are equal to corresponding ambient temperature data outside the fruits at the position at the moment or not and whether the temperature data are greater than the preset temperature or not at the moment corresponding to preset duration, if so, alarming, otherwise, completing precooling.

9. The method for calculating the shelf life of fruits based on the synchronous monitoring of the internal temperature and the external temperature of the cold chain link according to claim 6, further comprising the following steps:

calculating the internal and external temperature difference of the same fruit at the same time in the refrigeration link according to the temperature data inside the fruit at a plurality of positions at different times in the refrigeration link and the environmental temperature data outside the fruit;

and monitoring whether refrigeration equipment in the refrigeration link works normally or not according to the temperature data inside the fruits at a plurality of positions at different moments in the refrigeration link, the ambient temperature data outside the fruits and the internal and external temperature difference of the same fruit at the same moment in the refrigeration link.

10. The method for calculating the shelf life of fruits based on the synchronous monitoring of the internal temperature and the external temperature of the cold chain link according to claim 6, further comprising the following steps:

calculating the internal and external temperature difference of the same fruit at the same time in the refrigeration transportation link according to the temperature data inside the fruit and the environmental temperature data outside the fruit at a plurality of positions at different times in the refrigeration transportation link;

and monitoring whether refrigeration equipment in the refrigeration transportation link works normally or not according to the temperature data inside the fruits at a plurality of positions at different moments in the refrigeration transportation link, the ambient temperature data outside the fruits and the internal and external temperature difference of the same fruit at the same moment in the refrigeration transportation link.