Research And Development Of Readers In The Blueberry Traceability System

Studies have shown that Blueberry contains some physiological active substance,such as anthocyanins, flavonols and phenolic acids, which are particular useful in anticancer, antioxidant, antiosteoporosis and so on. People have long been puzzled by the problems of food safety. Thus, it's rather important to establish a system to monitor the trace from the farmland to the dining-table for the high-price blueberry.By the research on blueberry and the advantages of RFID, a traceable system with the RFID is introduced in this paper. Firstly, considering the needs of the traceability of blueberry, this paper selected the farmland base, the processing center, the delivery center and the market center to be the traceable information nodes, which can ensure that the designed system is complete and scalable. Secondly, the paper introduced the Linux operating system and the QT4 program. To be a complete system, the paper also designed a module that can be used not only as a part of the RFID reader and writer but also as a tag.Finally, the paper designed a new anti-collision algorithm which can decrease the possibility of collision. This paper also proposed a low-power algorithm which can reduce the energy consumption of tags.The system finally passed the test and the results show that the tags can be written and read exactly when the tags arrived at the market center.It can not only save and update the information but also provide convenience for extension the system in the future.