Fresh food e-commerce cold chain distribution system

Abstract

The invention provides a fresh food e-commerce cold chain distribution system, and relates to the technical field of fresh food product distribution, and the system comprises a production system which comprises the steps: carrying out the sorting and standardization processing of fresh food products, and putting the processed fresh food products into a modular sub-packaging box, and the modular sub-packaging box is used for containing the fresh food products; the centralized distribution center system is characterized in that a plurality of modular sub-packaging boxes are arranged in a central distribution refrigerated container in an urban central warehouse, and the central distribution refrigerated container is provided with a plurality of second sensors, a GPS module and a locking system; the merchant distribution system comprises an urban cold chain vehicle which is used for fixing and distributing a central distribution refrigerated container; and the central server is used for receiving and processing data from all the modular sub-packaging boxes and the central distribution refrigerated containers so as to monitor the states of the modular sub-packaging boxes and the central distribution refrigerated containers. According to the invention, the safety, traceability and efficiency of fresh food delivery are improved, and the risk of food deterioration and loss is effectively reduced, so that fresh products with higher quality are provided.

Description

Technical Field

[0001] The present invention relates to the technical field of fresh product distribution, and in particular to a fresh product e-commerce cold chain distribution system. Background Art

[0002] With the rapid development of e-commerce and the growing demand for fresh products among consumers, the cold chain distribution system of fresh food e-commerce has received widespread attention in recent years.

[0003] With the advancement of refrigeration technology, large refrigerated trucks and cold storage systems have gradually become the main mode of cold chain distribution of fresh products. The cold chain system at this stage can maintain a stable low-temperature environment over a long distance, significantly extending the shelf life of fresh products and expanding the distribution range. However, this method still has problems such as high energy consumption and poor flexibility, especially in the last mile of urban distribution.

[0004] In recent years, with the development of the Internet of Things, big data and artificial intelligence technologies, intelligent cold chain distribution systems have begun to emerge. Through real-time monitoring and intelligent regulation, these systems can not only accurately control the temperature and humidity of the entire transportation process, but also optimize the distribution route and improve the distribution efficiency. At the same time, the application of modular design and new preservation materials has also greatly reduced packaging waste and improved the environmental friendliness of the system.

[0005] Serious loss in cold chain logistics: In the traditional fresh food distribution model, the loss of fresh food during the circulation process is as high as 20-30%. After the vegetables are packaged at the base, they are directly sent to community supermarkets across the country, which has relatively small losses. However, it is only suitable for densely populated areas and does not take advantage of the Internet to transform fresh food logistics.

[0006] Packaging waste and environmental issues: Existing fresh food delivery generally uses disposable packaging materials, such as foam boxes, aluminum foil and plastic bags, which causes a lot of waste and environmental pollution.

[0007] However, despite significant progress in existing technologies, there are still deficiencies in full traceability, personalized delivery, safety, etc.

[0008] Therefore, there is an urgent need for a new type of fresh food e-commerce cold chain distribution system to achieve fully controllable, efficient, environmentally friendly and safe cold chain distribution. Summary of the invention

[0009] In view of this, the present invention proposes a cold chain distribution system for fresh food e-commerce, which integrates intelligent hardware, Internet of Things technology and big data analysis to build a comprehensive, efficient and traceable cold chain logistics solution. The system aims to achieve full monitoring and intelligent management from fresh product packaging, transportation to final distribution to ensure food safety and quality. Through modular design and multi-level sensor network, the system can monitor key parameters such as temperature, collision, odor in real time, and use multi-level early warning mechanisms to promptly detect and handle abnormal situations. At the same time, the intelligent locking system and GPS positioning improve the safety and traceability of the distribution process.

[0010] The technical solution of the present invention is implemented as follows: The present invention provides a fresh food e-commerce cold chain distribution system, comprising: The production system includes: sorting and standardizing fresh products, packing the processed fresh products into modular packaging boxes, the modular packaging boxes are used to hold fresh products, and the modular packaging boxes are equipped with multiple first sensors for monitoring data in the boxes during delivery; and are used to pack the fresh products into the modular packaging boxes at the place of production; The distribution center system includes: a plurality of modular packaging boxes are loaded into a central distribution refrigerated box in a city center warehouse, the central distribution refrigerated box is equipped with a plurality of second sensors, a GPS module and a locking system, the second sensor is used to monitor the data in the box during distribution, the GPS module is used to provide location information, and the locking system is used to control the opening and closing of the central distribution refrigerated box; The merchant distribution system includes: an urban cold chain vehicle for fixing and delivering central distribution refrigerated boxes, which is provided with a charging interface for supplying power to the central distribution refrigerated boxes; The central server is provided with a monitoring platform for receiving and processing data from all modular distribution boxes and central distribution refrigerated containers to monitor the status of the modular distribution boxes and the central distribution refrigerated containers.

[0011] On the basis of the above technical solution, preferably, the first sensor includes a temperature sensor, a collision sensor and an odor sensor, the second sensor includes a temperature sensor, a collision sensor and a lock picking sensor, and both the first sensor and the second sensor are connected to a memory and a battery.

[0012] On the basis of the above technical solution, preferably, the modular packaging box is equipped with a short-range wireless communication module for communicating with the central distribution refrigerated box; the central distribution refrigerated box is equipped with a multi-mode wireless communication module for receiving data from the first sensor of the modular packaging box, integrating the data of the first sensor with the data of the second sensor and transmitting them to the central server.

[0013] Based on the above technical solution, preferably, the central distribution refrigerated box transmits data to the central server according to a hybrid transmission strategy, and the hybrid transmission strategy is as follows: A. Under normal circumstances, data is transmitted once at a set time interval; B. When the sensor detects abnormal data, it immediately triggers data transmission; B. When the central distribution refrigerated container enters an area with good network coverage, data synchronization is triggered and the untransmitted data in the storage is transmitted.

[0014] On the basis of the above technical solution, preferably, the urban cold chain vehicle is provided with a slot device; the slot device is evenly distributed along the length direction of the vehicle compartment, and the spacing matches the size of the central distribution refrigerated box; wherein the slot device includes: A base, fixed to the bottom of the carriage; The claw is a movable locking mechanism which is connected to the base by a hinge and is used to secure the central distribution refrigerated box; Connecting rod, used to connect all the claws to achieve synchronous operation; The operating lever is located outside the carriage and is connected to the connecting rod to control the switch of the claw.

[0015] On the basis of the above technical solution, preferably, the central distribution refrigerated box is provided with a locking protrusion, which is installed at the four bottom corners of the central distribution refrigerated box, corresponding to the claw, and is in an inverted L shape, and the horizontal part is used for locking the claw.

[0016] On the basis of the above technical solution, preferably, the locking system includes: an integrated control module, including a microprocessor and memory, for processing unlock requests, managing permissions, and controlling lock status; An electronic lock execution unit, including a miniature electromagnetic lock or a motor-driven lock, is used to perform unlocking and locking operations; A communication unit, including a 4G / 5G mobile communication module, is used for data transmission and command reception with a central server; A QR code scanning module, including a small camera and a decoding processor, is used to scan and identify the unique QR code of the order displayed by the customer; Power management unit, including high energy density lithium battery, charging control circuit and low power management system for system power supply and energy optimization; Wherein, the locking system adopts a modular design and is installed on the door frame or side wall of the refrigerator.

[0017] Based on the above technical solution, preferably, the execution process of the locking system is as follows: a) The QR code scanning module is in standby mode and is activated when a QR code is detected within its field of view; b) The QR code scanning module reads the unique QR code of the order displayed by the merchant and transmits the information to the integrated control module; c) The integrated control module verifies the validity of the QR code, confirms the merchant's identity and authority, and controls the electronic lock execution unit to perform the unlocking operation if the verification is successful; d) The power management unit implements dynamic power consumption control, adjusts system power consumption in different working modes, and automatically charges when docking with the city cold chain vehicle; e) The integrated control module stores all unlocking records and abnormal events locally and uploads the data to the central server via the communication unit regularly.

[0018] On the basis of the above technical solution, preferably, a plurality of partitions are provided in the central distribution refrigerated box to divide the central distribution refrigerated box into a plurality of areas, and horizontal slide rails are installed on the left and right side walls of each area, and the slide rails extend along the depth direction of the central distribution refrigerated box; sliders matching the slide rails are installed on both sides of the modular packaging box, and the sliders are protruding parts, and the shape matches the slide rails; the modular packaging box is embedded in the central distribution refrigerated box through the matching of the sliders and the slide rails.

[0019] On the basis of the above technical solution, preferably, the monitoring platform has a built-in data processing algorithm and is configured with a multi-level early warning system. The early warning level is determined according to the data processing results to form early warning information. The early warning levels are divided into: Emergency warning: abnormalities are detected in the lock picking data of the central distribution refrigerated box, the temperature data of the modular packaging box or the central distribution refrigerated box exceeds 120% of the safety threshold, the odor data shows that the fresh product has obviously deteriorated, and multiple moderate warnings appear at the same time; Serious warning: The temperature of the modular packaging box or central distribution refrigerated box exceeds 110% but less than 120% of the safety threshold; the odor data shows that the fresh product has reached the critical point of deterioration; the collision data of the modular packaging box or central distribution refrigerated box shows a strong collision; and multiple minor warnings appear at the same time; Moderate warning: The temperature of the modular packaging box or central distribution refrigerator exceeds the safety threshold but does not reach 110%, the odor data approaches the critical point, the collision data shows a moderate collision, and the temperature data analysis predicts that it will exceed the safety threshold within 2 hours; Mild warning: The temperature of the modular packaging box or central distribution refrigerator is close to but not above the safety threshold, the odor data shows a slight change, the collision data shows a slight collision, and the temperature data analysis predicts that it will approach the safety threshold within 4 hours; Green prompt: Any data has slight abnormalities but is within a safe range.

[0020] The system of the present invention has the following beneficial effects compared with the prior art: By integrating modular packaging boxes, central distribution refrigerated boxes, urban cold chain vehicles and central servers, and combining multi-level sensor networks, GPS positioning, intelligent locking systems and multi-level early warning mechanisms, it has achieved intelligent monitoring and management from packaging to distribution, significantly improving the safety, traceability and efficiency of fresh food distribution, effectively reducing the risk of food spoilage and loss, and providing higher quality fresh products; The modular packaging box design equipped with multiple sensors enables accurate monitoring of individual fresh products, timely detection of temperature, collision and odor changes, effectively preventing cross contamination, and improving the accuracy and flexibility of product quality management; By establishing a multi-level wireless communication network between modular packaging boxes, central distribution refrigerated boxes and central servers, efficient data transmission and integration are achieved, improving the system's real-time monitoring capabilities and data integrity; A hybrid transmission strategy combining normal timed transmission, abnormal triggered transmission and synchronous transmission in good network areas is adopted to optimize transmission efficiency and network resource utilization while ensuring data real-time performance; The intelligent locking system with integrated control module, electronic lock execution unit and QR code scanning module realizes safe and convenient unlocking operation, improving the safety and traceability of the distribution process; By setting a horizontal slide rail and a matching modular box slider inside the cold storage box, the box can be quickly loaded and unloaded and positioned firmly, which improves the packing efficiency and space utilization, and reduces the risk of collision during transportation. By setting up a five-level warning mechanism of emergency, serious, moderate, mild and green, combined with data processing algorithms, we can achieve accurate identification and graded processing of abnormal situations, improve the system's risk management capabilities and response efficiency, and maximize the quality and safety of fresh products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a system framework diagram of the present invention; Figure 2 It is a simplified structural schematic diagram of the central distribution refrigerated box of the present invention; Figure 3 It is a schematic diagram of the nested structure of the modular packaging box and the central distribution refrigerated box of the present invention; Figure 4It is a flow chart of the system operation of the present invention. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figure 1 As shown, the present invention provides a fresh food e-commerce cold chain distribution system, comprising: The production system includes: sorting and standardizing fresh products, and packing the processed fresh products into modular packaging boxes, wherein the modular packaging boxes are used to hold fresh products, and the modular packaging boxes are equipped with a plurality of first sensors for monitoring data in the boxes during delivery; The distribution center system includes: a plurality of modular packaging boxes are loaded into a central distribution refrigerated box in a city center warehouse, the central distribution refrigerated box is equipped with a plurality of second sensors, a GPS module and a locking system, the second sensor is used to monitor the data in the box during distribution, the GPS module is used to provide location information, and the locking system is used to control the opening and closing of the central distribution refrigerated box; The merchant distribution system includes: an urban cold chain vehicle for fixing and delivering central distribution refrigerated boxes, which is provided with a charging interface for supplying power to the central distribution refrigerated boxes; The central server is provided with a monitoring platform for receiving and processing data from all modular distribution boxes and central distribution refrigerated containers to monitor the status of the modular distribution boxes and the central distribution refrigerated containers.

[0025] It should be noted that the distribution system provided by the present invention is a delivery method for B-end merchants. It is jointly operated by the production system, the distribution center system, the merchant distribution system and the central server to deliver fresh products from the production base to the merchants, ensuring the safety, traceability and efficiency of the fresh product distribution in this process.

[0026] Specifically, in one embodiment of the present invention, the modular packaging box is used to package fresh products from the production base. The production base refers to the upstream agricultural product supply base, which is the initial processing place for fresh products and is equipped with automatic sorting equipment for sorting and standardizing fresh products according to merchant orders. The processed fresh products are loaded into modular packaging boxes. These boxes use stainless steel boxes and food-grade plastic covers. There are small hole sealing devices on the covers, which can effectively discharge oxygen and extend the shelf life. Each modular packaging box is equipped with multiple first sensors and short-range wireless communication modules. The first sensors include temperature sensors, collision sensors and odor sensors, which are used to monitor the temperature, collision conditions and odor changes in the modular packaging boxes; the short-range wireless communication module is used to communicate with the central distribution refrigerator. The production base will feedback the production situation and processing progress to the central server to ensure that the information of the entire supply chain is transparent and traceable.

[0027] The modular packaging boxes are transported from the production base to the central warehouse by backbone cold chain vehicles. According to the merchant orders, the central warehouse arranges and combines the modular packaging boxes and loads them into central distribution refrigerated boxes.

[0028] Specifically, Figure 2 This is a simplified structural diagram of a central distribution refrigerator. In this example, the refrigerator includes a box body 21, double doors 22, handles 23 and a locking system 24. Other configurations of the refrigerator, such as a second sensor, a multi-mode communication module, etc., are installed inside the box body and are not shown in the figure. Figure 3 This is a schematic diagram of the nested structure of modular packaging boxes and central distribution refrigerated boxes. Figure 3 In the diagram, a plurality of partitions 32 are provided in a central distribution refrigerated box 31, which divides the central distribution refrigerated box into a plurality of areas. Horizontal slide rails 33 are installed on the left and right side walls of each area, and the slide rails extend along the depth direction of the central distribution refrigerated box; sliders 35 matching the slide rails are installed on both sides of a modular packaging box 34, and the sliders are protruding parts, and their shapes match the slide rails; the modular packaging box is embedded in the central distribution refrigerated box through the matching of the sliders and the slide rails.

[0029] In one example, the internal slide rail setting of the central distribution refrigerated box: horizontal slide rails are installed on the inner wall of the central distribution refrigerated box. Each layer should have a pair of slide rails, one on the left and one on the right. The slide rails should extend along the depth of the refrigerated box so that the modular packaging boxes can slide in from the front to the back. The slide rails can be made of metal strips with L-shaped or C-shaped cross-sections to ensure sufficient strength and smoothness. The slide rails should be fixed to the inner wall of the large box and can be installed using screws or rivets. Modular packaging box slider setting: sliders matching the slide rails are installed on both sides of the modular packaging box. The slider can be a simple protrusion whose shape must match the slide rail. For example, if the slide rail is L-shaped, the slider is a flat protrusion. The slider extends along the length of the modular packaging box to ensure stability. The slider can be directly formed on the modular packaging box, or fixed to the side wall of the modular packaging box by bolts or the like.

[0030] In another example, the material of the slide rail and the slider is selected to be wear-resistant and low-friction material, such as stainless steel or high-strength plastic. A stop device is set at the end of the slide rail to prevent the small box from sliding out.

[0031] Urban cold chain vehicles are responsible for transporting refrigerated boxes from the central warehouse to various pick-up points. These cold chain vehicles are equipped with a card slot device to fix the refrigerated boxes for quick loading and unloading, and a charging port to ensure the refrigerated endurance of the refrigerated boxes during transportation. Urban cold chain vehicles ensure that fresh products are kept in the best condition during the last mile of transportation.

[0032] Specifically, the urban cold chain vehicle is provided with a slot device; the slot devices are evenly distributed along the length direction of the vehicle compartment, and the spacing matches the size of the central distribution refrigerated box; wherein the slot device includes: A base, fixed to the bottom of the carriage; The claw is a movable locking mechanism which is connected to the base by a hinge and is used to secure the central distribution refrigerated box; Connecting rod, used to connect all the claws to achieve synchronous operation; The operating lever is located outside the carriage and is connected to the connecting rod to control the switch of the claw.

[0033] The central distribution refrigerated box is provided with locking protrusions, which are installed at the four corners of the bottom of the central distribution refrigerated box, corresponding to the claws, and are in an inverted L shape, and the horizontal part is used for locking the claws.

[0034] Locking mechanism: When pushed in, the inclined design of the locking protrusion guides the claw to rise; when fully pushed in, the claw falls into the locked position under the action of gravity; the horizontal part of the locking protrusion bears the downward pressure of the claw to achieve fixation.

[0035] In another embodiment, the urban cold chain vehicle can also be equipped with a slide rail, which is installed at the bottom of the vehicle, has an adjustable width and is installed in pairs, and a card slot device is set on the side of the slide rail. Correspondingly, the central distribution refrigerated box is provided with a slider structure, which is bolted to both sides of the bottom of the central distribution refrigerated box, corresponding to the slide rail. The slide rail and the slider device are matched with the card slot device to achieve rapid loading and unloading of the refrigerated box.

[0036] When in use, the refrigerator is made of heat-insulating materials and is equipped with multiple second sensors, a GPS module, a locking system and a multi-mode wireless communication module. The second sensors include temperature sensors, collision sensors and lock-picking sensors, which are used to monitor the temperature, collision and abnormal conditions of the locking system of the refrigerator; the multi-mode wireless communication module is used to receive data from the first sensor of the modular packaging box, integrate the data of the first sensor with the data of the second sensor, and transmit them to the central server. The first sensor and the second sensor are both connected to a memory and a battery. The memory is used to record various sensing data as local storage to save a complete record of all monitoring data for subsequent analysis or verification in case of disputes; when the network signal is poor or interrupted, the data is temporarily stored and uploaded in batches after the signal is restored. The battery provides power for the sensor and memory.

[0037] Specifically, during the delivery, the central delivery refrigerated box transmits data to the central server according to the hybrid transmission strategy, which is as follows: A. Under normal circumstances, data is transmitted once at a set time interval; B. When the sensor detects abnormal data, it immediately triggers data transmission; B. When the central distribution refrigerated container enters an area with good network coverage, data synchronization is triggered and the untransmitted data in the storage is transmitted.

[0038] For example, under normal circumstances, if it is in transit, data is transmitted every 30 minutes, and if it is in the distribution stage, data is transmitted every 5 minutes; when the sensor detects a sudden change in temperature or a violent collision, data transmission is triggered immediately; when the refrigerated container enters the transfer station and the network coverage is good, data synchronization is automatically performed, and key data that has not been transmitted in the local storage is transmitted in batches.

[0039] After the data is transmitted to the central server, the server sends a confirmation message. If no confirmation is received, the transmission is retried after a certain period of time.

[0040] In one example, considering the volume restrictions of the central distribution refrigerated box and the modular packaging box, as well as the structural restrictions, the hardware setting can be configured as follows: The modular packaging boxes are equipped with short-range wireless communication modules, such as Bluetooth Low Energy (BLE) modules, and the central distribution refrigerated boxes are equipped with cellular network modules (4G / 5G) and Bluetooth modules (for communication with small boxes). The storage can be SSD to store data of all modular packaging boxes and refrigerated boxes.

[0041] Specifically, if conditions permit, an RTC module can also be configured on the cold storage box to ensure accurate and timely data timestamps.

[0042] When urban cold chain vehicles are transporting refrigerated containers, data is uploaded to the central server according to the hybrid transmission strategy. The central server is equipped with a monitoring platform with built-in data processing algorithms and a multi-level early warning system. The warning level is determined based on the data processing results to generate early warning information.

[0043] Among them, the process of judging the warning level based on the data processing results and forming the warning information is as follows: 1. Clean, standardize and detect outliers on the received raw data, including removing duplicate data, correcting obvious erroneous values ​​and filling missing values. Convert different types of data, such as temperature and humidity, to a unified scale. Use the statistical method Z-score to identify and handle outliers.

[0044] 2. Temporally align and fuse multiple sensor data from modular distribution boxes and central distribution refrigerated boxes; including: synchronizing data from different sensors by timestamp, associating data from sensors at different locations to specific modular distribution boxes or refrigerated boxes, and using Kalman filtering algorithms to integrate multi-source data.

[0045] 3. Use the long short-term memory network (LSTM) to analyze the fused time series data, train the model to identify normal operating modes and various abnormal modes, and perform anomaly detection on the real-time data stream through the trained model to identify abnormal modes of parameters such as temperature and collision.

[0046] 4. Combine GPS location information and external weather data to establish a correlation model between environmental factors and cold chain status, and use random forest to predict the impact of environmental changes on the cold chain.

[0047] 5. Establish initial thresholds based on historical data, set safety margins based on expert knowledge, and dynamically adjust thresholds using exponentially weighted moving averages.

[0048] 6. Based on the processed data and dynamic thresholds, the system status is evaluated in real time, and a decision tree is used to implement multi-level warning logic to generate warning information including warning levels, specific abnormal conditions and recommended measures. The warning levels are divided into: Emergency warning: abnormalities are detected in the lock picking data of the central distribution refrigerated box, the temperature data of the modular packaging box or the central distribution refrigerated box exceeds 120% of the safety threshold, the odor data shows that the fresh product has obviously deteriorated, and multiple moderate warnings appear at the same time; Serious warning: The temperature of the modular packaging box or central distribution refrigerated box exceeds 110% but less than 120% of the safety threshold; the odor data shows that the fresh product has reached the critical point of deterioration; the collision data of the modular packaging box or central distribution refrigerated box shows a strong collision; and multiple minor warnings appear at the same time; Moderate warning: The temperature of the modular packaging box or central distribution refrigerator exceeds the safety threshold but does not reach 110%, the odor data approaches the critical point, the collision data shows a moderate collision, and the temperature data analysis predicts that it will exceed the safety threshold within 2 hours; Mild warning: The temperature of the modular packaging box or central distribution refrigerator is close to but not above the safety threshold, the odor data shows a slight change, the collision data shows a slight collision, and the temperature data analysis predicts that it will approach the safety threshold within 4 hours; Green prompt: Any data has slight abnormalities but is within a safe range.

[0049] Specifically, in one embodiment of the present invention, after the urban cold chain vehicle delivers the central distribution refrigerated box to the designated location, it needs to verify the merchant information through the locking system to unlock it. The locking system includes: an integrated control module, including a microprocessor and memory, for processing unlock requests, managing permissions, and controlling lock status; An electronic lock execution unit, including a miniature electromagnetic lock or a motor-driven lock, is used to perform unlocking and locking operations; A communication unit, including a 4G / 5G mobile communication module, is used for data transmission and command reception with a central server; A QR code scanning module, including a small camera and a decoding processor, is used to scan and identify the unique QR code of the order displayed by the customer; Power management unit, including high energy density lithium battery, charging control circuit and low power management system for system power supply and energy optimization; Wherein, the locking system adopts a modular design and is installed on the door frame or side wall of the refrigerator.

[0050] Specifically, the execution process of the locking system is as follows: a) The QR code scanning module is in standby mode and is activated when a QR code is detected within its field of view; b) The QR code scanning module reads the unique QR code of the order displayed by the merchant and transmits the information to the integrated control module; c) The integrated control module verifies the validity of the QR code, confirms the merchant's identity and authority, and controls the electronic lock execution unit to perform the unlocking operation if the verification is successful; d) The power management unit implements dynamic power consumption control, adjusts system power consumption in different working modes, and automatically charges when docking with the city cold chain vehicle; e) The integrated control module stores all unlocking records and abnormal events locally and uploads the data to the central server via the communication unit regularly.

[0051] In a specific example, the hardware configuration of the locking system is as follows: The integrated control module includes: a microprocessor, such as ARM Cortex-M4 series, and a memory, including a Flash memory and a RAM.

[0052] Electronic lock execution unit: micro electromagnetic lock or motor driven lock, lock status detection sensor.

[0053] Communication unit: 4G / 5G mobile communication module, antenna.

[0054] QR code scanning module: small CMOS camera, image processing and decoding chip.

[0055] Power management unit: high energy density lithium battery, charging control IC, power management IC.

[0056] Enclosure and Mounting Kit: Waterproof and dustproof enclosure, mounting brackets and screws.

[0057] Specifically, the integrated control module is responsible for processing input information, controlling various subsystems, and making decisions. The electronic lock execution unit performs physical unlocking and locking according to the instructions of the integrated control module. The communication unit ensures that the system remains connected to the central server and can upload data and receive instructions in real time. The QR code scanning module is responsible for identifying the merchant's order QR code. It includes a high-resolution small camera and a dedicated image processing chip that can quickly and accurately identify and decode the QR code. The power management unit ensures that the system works stably for a long time. The high-energy density lithium battery provides the main power supply, the charging control circuit automatically charges when docking with the cold chain vehicle, and the low-power management system optimizes energy use.

[0058] See also Figure 4 The operation process of the fresh food e-commerce cold chain distribution system of the present invention is described with a specific embodiment: After receiving the merchant order, the S1 system selects the appropriate modular packaging box based on the order content. Fresh products are placed in the packaging box and the sensor on the packaging box is activated. The system generates a unique QR code for each order, which is bound to a specific modular packaging box.

[0059] S2 loads multiple modular boxes into the central distribution refrigerated box and secures them in place using a slide rail system. The locking system of the central distribution refrigerated box is activated and the packing information is recorded. The system plans the optimal delivery route based on the order information and delivery address.

[0060] The S3 central distribution refrigerated box is loaded onto the city cold chain vehicle and fixed by a slot device. The cold chain vehicle provides power to the central distribution refrigerated box to ensure that the refrigeration system and monitoring equipment continue to work. The vehicle starts delivery according to the planned route.

[0061] The sensors of the S4 modular packaging boxes and the central distribution refrigerated boxes continuously collect data. The central distribution refrigerated boxes transmit the data to the central server through the multi-mode wireless communication module according to the hybrid transmission strategy. The monitoring platform of the central server processes the received data in real time, analyzes and warns.

[0062] S5 If the system detects any abnormality (such as excessive temperature, severe collision, etc.), it will trigger an early warning of the corresponding level according to the severity. The system automatically generates treatment suggestions and notifies relevant personnel to take necessary intervention measures.

[0063] After the S6 cold chain vehicle arrives at the delivery location, the delivery person releases the card slot device through the operating lever and takes out the corresponding central delivery refrigerated box. The merchant presents the order QR code and uses the scanning module of the locking system to verify it. After the verification is passed, the system unlocks the central delivery refrigerated box, and the delivery person takes out the corresponding modular packaging box and delivers it to the merchant.

[0064] After the S7 delivery is completed, the empty modular distribution boxes and central distribution refrigerated boxes are collected and the equipment is cleaned and disinfected before being put back into use.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cold chain distribution system for fresh food e-commerce, characterized in that: include: The production system includes: sorting and standardizing fresh products, and packing the processed fresh products into modular packaging boxes, wherein the modular packaging boxes are used to hold fresh products, and the modular packaging boxes are equipped with a plurality of first sensors for monitoring data in the boxes during delivery; The distribution center system includes: a plurality of modular packaging boxes are loaded into a central distribution refrigerated box in a city center warehouse, the central distribution refrigerated box is equipped with a plurality of second sensors, a GPS module and a locking system, the second sensor is used to monitor the data in the box during distribution, the GPS module is used to provide location information, and the locking system is used to control the opening and closing of the central distribution refrigerated box; Merchant distribution system, including: City cold chain vehicles, used to secure and deliver central distribution refrigerated containers; The central server is provided with a monitoring platform for receiving and processing data from all modular distribution boxes and central distribution refrigerated containers to monitor the status of the modular distribution boxes and the central distribution refrigerated containers.

2. A fresh food e-commerce cold chain distribution system as claimed in claim 1, characterized in that: The first sensor includes a temperature sensor, a collision sensor and an odor sensor, the second sensor includes a temperature sensor, a collision sensor and a lock picking sensor, and both the first sensor and the second sensor are connected to a memory and a battery.

3. A fresh food e-commerce cold chain distribution system as claimed in claim 2, characterized in that: The modular packaging box is equipped with a short-range wireless communication module for communicating with the central distribution refrigerated box; the central distribution refrigerated box is equipped with a multi-mode wireless communication module for receiving data from the first sensor of the modular packaging box, integrating the data of the first sensor with the data of the second sensor and transmitting them to the central server.

4. A fresh food e-commerce cold chain distribution system as claimed in claim 3, characterized in that: The central distribution refrigerated box transmits data to the central server according to the hybrid transmission strategy, which is as follows: A. Under normal circumstances, data is transmitted once at a set time interval; B. When the sensor detects abnormal data, it immediately triggers data transmission; B. When the central distribution refrigerated container enters an area with good network coverage, data synchronization is triggered and the untransmitted data in the storage is transmitted.

5. A fresh food e-commerce cold chain distribution system as claimed in claim 1, characterized in that: The city cold chain vehicle is equipped with a card slot device; The slot devices are evenly distributed along the length of the carriage, and the spacing matches the size of the central distribution refrigerated box; wherein the slot devices include: A base, fixed to the bottom of the carriage; The claw is a movable locking mechanism which is connected to the base by a hinge and is used to secure the central distribution refrigerated box; Connecting rod, used to connect all the claws to achieve synchronous operation; The operating lever is located outside the carriage and is connected to the connecting rod to control the switch of the claw.

6. A fresh food e-commerce cold chain distribution system as claimed in claim 5, characterized in that: The central distribution refrigerated box is provided with locking protrusions, which are installed at the four corners of the bottom of the central distribution refrigerated box, corresponding to the claws, and are in an inverted L shape, and the horizontal part is used for locking the claws.

7. A fresh food e-commerce cold chain distribution system as claimed in claim 1, characterized in that: The locking system includes: an integrated control module, including a microprocessor and memory, for processing unlock requests, managing permissions, and controlling lock status; An electronic lock execution unit, including a miniature electromagnetic lock or a motor-driven lock, is used to perform unlocking and locking operations; A communication unit, including a 4G / 5G mobile communication module, is used for data transmission and command reception with a central server; A QR code scanning module, including a small camera and a decoding processor, is used to scan and identify the unique QR code of the order displayed by the customer; Power management unit, including high energy density lithium battery, charging control circuit and low power management system for system power supply and energy optimization; Wherein, the locking system adopts a modular design and is installed on the door frame or side wall of the refrigerator.

8. A fresh food e-commerce cold chain distribution system as claimed in claim 7, characterized in that: The locking system is implemented as follows: a) The QR code scanning module is in standby mode and is activated when a QR code is detected within its field of view; b) The QR code scanning module reads the unique QR code of the order displayed by the merchant and transmits the information to the integrated control module; c) The integrated control module verifies the validity of the QR code, confirms the merchant's identity and authority, and controls the electronic lock execution unit to perform the unlocking operation if the verification is successful; d) The power management unit implements dynamic power consumption control, adjusts system power consumption in different working modes, and automatically charges when docking with the city cold chain vehicle; e) The integrated control module stores all unlocking records and abnormal events locally and uploads the data to the central server via the communication unit regularly.

9. A fresh food e-commerce cold chain distribution system as claimed in claim 1, characterized in that: A plurality of partitions are arranged in the central distribution refrigerated box, which divides the central distribution refrigerated box into a plurality of areas. Horizontal slide rails are installed on the left and right side walls of each area, and the slide rails extend along the depth direction of the central distribution refrigerated box. Slide rails matching the slide rails are installed on both sides of the modular packaging box. The slide rails are protruding parts, and the shape matches the slide rails. The modular packaging box is embedded in the central distribution refrigerated box through the matching of the slide rails.

10. A fresh food e-commerce cold chain distribution system as claimed in claim 1, characterized in that: The monitoring platform has built-in data processing algorithms and is equipped with a multi-level early warning system. The early warning level is determined based on the data processing results and early warning information is generated. The early warning levels are divided into: Emergency warning: abnormalities are detected in the lock picking data of the central distribution refrigerated box, the temperature data of the modular packaging box or the central distribution refrigerated box exceeds 120% of the safety threshold, the odor data shows that the fresh product has obviously deteriorated, and multiple moderate warnings appear at the same time; Serious warning: The temperature of the modular packaging box or central distribution refrigerated box exceeds 110% but less than 120% of the safety threshold; the odor data shows that the fresh product has reached the critical point of deterioration; the collision data of the modular packaging box or central distribution refrigerated box shows a strong collision; and multiple minor warnings appear at the same time; Moderate warning: The temperature of the modular packaging box or central distribution refrigerator exceeds the safety threshold but does not reach 110%, the odor data approaches the critical point, the collision data shows a moderate collision, and the temperature data analysis predicts that it will exceed the safety threshold within 2 hours; Mild warning: The temperature of the modular packaging box or central distribution refrigerator is close to but not above the safety threshold, the odor data shows a slight change, the collision data shows a slight collision, and the temperature data analysis predicts that it will approach the safety threshold within 4 hours; Green prompt: Any data has slight abnormalities but is within a safe range.

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