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There are roughly three types of current food quality and safety traceability technologies in China: one is RFID radio frequency technology, which adds a chip mark on the food packaging, and the product enters and exits the warehouse and transportation can automatically collect and read related information. The flow direction can be recorded on the chip; one is the QR code. Consumers only need to take the QR code through a mobile phone with a camera, and then the relevant information of the product can be queried. The query record will be kept in the system. Once the product needs to be recalled You can send text messages directly to consumers to achieve precise recalls; there is also a barcode plus product batch information (such as production date, production time, batch number, etc.). In this way, food manufacturers basically do not increase production costs.
“Food safety traceability” is the abbreviation of “food quality and safety traceability system”. It was originally a food safety management system that was gradually established and improved by the European Union in 1997 in response to the “mad cow disease” problem. This food safety management system is promoted by the government, covering the upstream and downstream of the entire product industry chain such as food production bases, food processing companies, and food terminal sales. Information is shared through special hardware equipment similar to bank teller systems to serve final consumption. By.
Once food quality problems occur on the consumer side, you can perform network queries through the traceable source code on the food label to find out all the circulation information of the food manufacturer, food origin, and specific farmers, and clarify the corresponding legal responsibilities of the accident party. This system is of great significance to food safety and self-discipline of the food industry.
Food safety traceability technology composition
1. RFID information technology collection
The food traceability management system will use advanced RFID technology and rely on network technology and database technology to realize information fusion, query, and monitoring, and provide safety and food products for each production stage and the process of distribution to the final consumption field. Reasonable decision-making on ingredient sources and inventory control to realize a food safety early warning mechanism. RFID technology runs through food safety, including production, processing, circulation, and consumption. The whole process is strictly controlled, and a complete food safety control system of the industrial chain has been established to form a closed-loop production and sales of various food companies to ensure Provide the society with high-quality and assured food, and ensure high-quality data exchange in the supply chain, allowing the food industry to thoroughly implement the source of food traceability and the ability to provide complete transparency in the food supply chain.
2. WSN IoT technology
WSN (Wireless Sensor Network) is a multi-hop self-organizing network system formed by a large number of low-cost micro sensor nodes deployed in the monitoring area. Its purpose is to cooperatively sense, collect and process the network coverage area. Information about the object being sensed in and sent to the observer. Sensors, perception objects and observers constitute the three elements of wireless sensor networks. As an important technology that constitutes a WSN network, Zigbee technology is gradually accepted by the market due to its advantages of low complexity, self-organization, low power consumption, low data rate, and low cost.
3. EPC global product electronic code system
The full name of EPC is ElectronicProductCode, which is called product electronic code in Chinese. The carrier of EPC is RFID electronic label, and realize the transmission of information with the help of the Internet. EPC aims to establish a global and open labeling standard for single products with no comments, and realize the tracking and tracing of single products on a global scale, so as to effectively improve the level of supply chain management and reduce logistics costs. EPC is a complete and complex integrated system.
The food traceability system will combine EPC technology to unify all circulation links (including production, transportation, and retail) to form an open and queryable EPC Internet of Things, thereby greatly improving the traceability of food.
4. Logistics tracking and positioning technology (GIS/GPS)
To achieve food traceability, it is necessary to run through the entire food process, including production, processing, circulation and sales. The entire process must be strictly controlled, so as to form a complete industrial chain food safety control system to ensure the provision of high-quality food to the society Rest assured of food, and can ensure high-quality data exchange in the supply chain, allowing the food industry to thoroughly implement the source of food traceability and the ability to provide complete transparency in the food supply chain. Therefore, the logistics and transportation links are extremely important for the safety of the entire food.
The application of GIS (Geographic Information System) and GPS (Global Satellite Positioning System) technology has just solved the problem of accurate tracking and real-time positioning in the process of logistics transportation. GIS is based on geospatial data and adopts geographic model analysis methods to provide a variety of spatial and dynamic geographic information in a timely manner. It is a computer technology system that serves geographic research and geographic decision-making. Especially in recent years, GIS has played an increasingly important role in GPS and route optimization with its powerful geographic information spatial analysis function. GPS (Global Satellite Positioning System) is a system that uses geosynchronous satellites and ground receiving devices to calculate the latitude and longitude coordinates of the current target device (receiving device) in real time to achieve positioning. Now more and more logistics systems use the combination of GIS and GPS to determine the operating conditions of transport vehicles. The food traceability system can effectively monitor and locate food by building a transportation positioning system.
Advantages of food safety traceability technology
1. Realize the record of the full name of food information in the circulation links of production areas, wholesale markets, supermarkets, etc., to achieve the effect of interlocking and well-documented;
2. Adopt Internet of Things technologies such as Zigbee to connect all links together urgently, avoid data loss or human intervention in the food circulation process, and ensure food safety and trustworthiness;
3. The entire system uses computer Internet and other technologies to facilitate every consumer and manager to understand the source and transportation process of food conveniently and quickly, and improve food safety supervision.
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