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System background
In recent years, the frequent occurrence of many food safety incidents has seriously threatened the health of consumers. It has attracted widespread worldwide attention and has also affected the healthy, sustained and stable development of the food industry. How to ensure the safety of the food supply chain has become an urgent global issue that needs to be resolved. Traditional food quality inspection methods have problems such as lagging management, low efficiency and high error rate. The use of RFID technology to establish a safe food supply chain system can effectively solve the above problems. The RFID system can provide a reliable connection between the food and the source in the food supply chain, ensuring that the source of the food arriving at the supermarket shelf and kitchen is clear, and can be traced to the production enterprise, even animals, plants, and specific processing operators.
“Food is the heaven for the people, and safety is the first.” The application of RFID technology in the safe food supply chain will help food companies strengthen food safety management, stabilize and expand consumer groups, and enhance market competition. From the perspective of the food supply chain, it creates an environment for consumers to consume with confidence, establishes a good image, and effectively improves the service level of the entire supply chain. Although there are still some problems to be solved in the application of RFID, its application prospects are very broad.
working principle
After the electronic tag reader 1 starts working, it sends an instruction to read the tag 3 to the antenna 2. The electronic tag 3 on the food 4 receives the radio wave energy from the antenna 2, and then sends the serial number information to the antenna 2, and the antenna 2 receives this signal , And send this signal to the reader 1. The reader will process the received signal and then bury it in the data processing chip 5 integrated in the reader. At the same time, it will be distributed in each of the circulation links. The sensors 6 respectively send the measured surrounding environment information to the data processing chip 5. The data processing chip 5 comprehensively processes the received information, and then sends the processing results to the food safety database 8 through the communication network 7.
system structure
The system consists of electronic tags, antennas, readers, sensors that detect external environmental parameters, food safety databases, food safety assessment algorithms, and corresponding service networks. Its outstanding feature is the electronic tags attached to food packaging; temperature, humidity, Sensors such as illuminance; use the RFID public service system to form a food safety management system, a quality assessment system and a traceability system based on food quality information and environmental data.
Schematic diagram of RFID food safety management system architecture. The electronic label is pasted on the food or food packaging box, the reader is connected with the antenna, and the sensor is integrated with the reader. The data packets read by it are transmitted to the food safety management database through the network, and the manufacturers and products in each link of the food supply chain The information is registered in the RFID public service system, based on the food safety management database, through the integration of supply chain information, the system provides food information services, food safety traceability, food quality assessment and other application services.
The food safety management database is the basis for the realization of functions and services of the system. It establishes a data record for each food corresponding to an electronic label to describe its operating personnel and environmental parameters in various circulation links such as food processing, transportation and warehouses. , Processing method and time and other information.
In the process of food raw material production, the pasture raised livestock records feed, vaccine and other information, and the farm grows agricultural products to record varieties and fertilization information. These information are transmitted to the food safety management system through the network and written into the database.
In the process of food production and processing, a unique RFID electronic tag is embedded on its surface or packaging material. The encoding format and number of bits are determined by the national food safety standard. The manufacturer reads the electronic tag through the reader. The network writes various information that can affect the quality of the food into the food safety database, such as the source of raw materials, processing technology, processor name, product quality information, recommended eating period, eating method, etc.
Use service
Based on the integration of food safety management database and food supply chain information, the system can provide the following services.
(1) Food information services: Users can enjoy food information services through inquiries.On the dining table, you can get information about the origin of each dish, the producer (processer), the date of production, the chef, and the cooking method; when shopping in the supermarket, you can get the flow information and safety information of the purchased food
(2) Food safety traceability: Once an outbreak occurs, the food safety management system can quickly find the product sales location, responsible person and product origin information, not only can find the ultimate consumer of each food according to the food safety traceability system, but also You can also find out the links that have problems in the circulation or production process, and take corresponding measures.
(3) Terminal query system: Supermarkets are the main channel for consumers to buy food. Consumers can check the information of the purchased food on the RFID electronic tag query terminal provided by the supermarket or the manufacturer.
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