生猪养殖阶段可追溯系统的天线设计（摘要）

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。

Antenna Design of Traceability System in Pig Breeding Stage

Objective] In response to pig breeding stage characteristics,the research aimed to design the traceability system to realize the pig product marking which based on RFID technology. Method] The antenna’s design method of electronic tag and reader antenna were expounded and different antennas were used for testing communication test of RFID system. Result] When the parameter setup such as data transportation ratio was same,the communication distance of external antenna was farther than RCB antenna; compare with three external antennas,the communication distance of coaxial antenna and wall-hanged antenna were farther. In 500 kbps transfer rate,communication distance was within 28 meters,and in 250 kbps transfer rate,communication distance was within 40 meters. Considered the cost of hardware,the price of wall-hanged antenna was higher than coaxial antenna,so in the same communication distance request,system selected coaxial antenna. Conclusion] During the pig breeding stage,by dint of electronic tag and reader designed by the research could improve the safety of the pork and fully realize the track of source of food and provide technology support for the transparent management of food safety.