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[目的]针对生猪养殖阶段特点,设计基于RFID技术的畜产品可追溯系统。[方法]阐述电子标签和读写器的天线设计方法,并采用不同的天线对可追溯系统进行通信测试。[结果]数据传输率等参数设置相同时,外接天线的通讯距离比PCB天线要远;3种外接天线比较而言,同轴天线和壁挂天线的通讯距离较远;500kbps数据传输率时通讯距离在28m范围内,250kbps数据传输率时通讯距离在40m范围内。从硬件成本角度考虑,壁挂天线价格远高于同轴天线,在相同通讯距离要求时,系统选用同轴天线。[结论]在生猪养殖阶段采用该研究设计的有源电子标签和读写器,可提高猪肉产品的安全性,并对彻底实现食品的“源头”追踪和提供食品安全的透明化管理提供技术支撑。
[Objective] The aim of this study was to design a livestock product traceability system based on RFID technology. [Methods] This paper describes the design method of antenna for RFID and reader, and uses different antennas to test the traceability system. [Result] When the parameters such as data transmission rate are set the same, the communication distance of the external antenna is farther away from the PCB antenna. In comparison, the communication distance between the coaxial antenna and the wall antenna is farther away; the communication distance when the data transmission rate is 500kbps In the 28m range, 250kbps data transmission rate when the communication distance within 40m. From the perspective of hardware cost, the price of wall-mounted antenna is much higher than that of coaxial antenna. When the same communication distance is required, the system chooses the coaxial antenna. [Conclusion] The active electronic tags and readers designed in this study can improve the safety of pork products in the stage of pig breeding, and provide the “source” tracking of food products and the transparent management of food safety Technical Support.