1. Information sensing layer

The information-aware layer is mainly based on technologies such as the core of the Internet of Things. After picking fruits and vegetables, the unified EPC coded logo is first implanted into fruits and vegetables, and the readers are installed in the storage, transportation, processing, packaging, and distribution of fruit and vegetable cold chain logistics. Automatically identify the information of all links of fruit and vegetable cold chain logistics, and read or identify the quality information of fruits and vegetables; use wireless sensors, wired monitoring equipment, information input terminals to collect storage, transportation, processing, sales and other information in real time. The Internet of Things technology also dynamically manages all information on fruit and vegetable cold chain logistics, and achieves a comprehensive grasp of information about fruit and vegetable quality.

2, network communication transport layer

The network transmission layer utilizes various network technologies and their fusion technologies to transmit the perceived information to the fruit and vegetable supply chain information platform in a high quality and safe manner, realize mass data transmission and sharing, and realize the requirement of “connected objects”. This layer is based on technology, combined with long-distance connection technology (such as GSM, UMTS, etc.) and close-range connection technology (such as ZibBee, Blue-Tooth, wifi, UWB, etc.) to achieve communication between people, things and systems in the fruit and vegetable industry chain. Through the reader and network, communication system and network access equipment, the information obtained by the data acquisition layer is input into a certain information and vegetable industry chain information private network, and the fruit and vegetable industry chain information private network uses the Internet as a bridge to realize the quality information of fruits and vegetables in the wide grid. Communication networks and other private networks are securely and efficiently interconnected.

3. Application service layer

The application layer solves the problem of information processing and human-machine interface. The data transmitted by the network layer enters various information systems for processing at this level, and interacts with people through various devices. First of all, we should understand the needs of the people in the cold chain logistics industry of fruits and vegetables, and understand the services that the system should provide based on the demand. The main members concerned with the quality of fruit and vegetable cold chain logistics are: government regulatory authorities, cold chain related companies and end consumers. As a government regulatory agency, it is responsible for supervising, managing and controlling the quality of fruits and vegetables. He needs to know all the information in the cold chain circulation of fruits and vegetables. IoT technology needs to meet the needs of government regulatory authorities to keep information and provide communication with cold chain logistics companies. The platform for communication; as a cold chain related enterprise, we must first grasp the dynamic information of the cold chain of fruits and vegetables at each time point. Secondly, we should share this information to the upstream and downstream enterprises through the IoT platform in time to realize the efficient transmission of fruit and vegetable circulation information and ensure the circulation of each fruit and vegetable. As the ultimate consumer of fruits and vegetables, they are most concerned about the safety and freshness of fruits and vegetables. When purchasing fruits and vegetables, they can achieve traceable information throughout the journey, and achieve the purpose of purchasing with confidence.

In summary, the application of Internet of Things technology in the cold chain logistics of fruits and vegetables is conducive to the supervision and effectiveness of government regulatory authorities, achieving the goal of no dead angle management; helping fruit and vegetable enterprises to strengthen food safety operation and management, and stabilize and expand consumer groups. Enhance the market competitiveness; help consumers to rest assured that they can easily enjoy the "fresh fruits and vegetables" food.

Reprinted from the network