Research On Identily Technology Of Traceability Of Farm Product Supply Chain

Along with social progress and economic development, improvement of quality of life, food safety has been the social and consumer attention.In people's daily consumption of agricultural products account for a large proportion, it was the safety of agricultural products were particularly prominent.To achieve from the "farm" to the table safe supply of agricultural products, agricultural products must be established to track the supply chain traceability system, and establishment of traceability system to track the core of how agricultural products can be identified.In this paper, one-dimensional bar codes, two-dimensional bar codes, RFID (radio frequency identification) and other identification technology in the agricultural supply chain tracking applications in a retrospective study and discussion, and the three methods were compared and analyzed.Relatively simple one-dimensional bar code, but used widely, we are in contact with the vast majority of products and publications are one-dimensional bar code bar code; two-dimensional bar code technology is one-dimensional bar code can not meet the needs of practical applicationsarising under the premise of this paper to QR codes as an example, focusing on its technical characteristics and use of QR codes in agricultural supply chain traceability system of two key technologies:QR code encoding and decoding problems, that its agricultural supply chain istrace back the most appropriate technology; radio frequency identification technology (RFID) as a new automatic identification technology is being more and more attention to its domestic and international technical development of this system, working principle and other key technologiesthe research and analysis.