Title :
Design of Mining Logistics UHF RFID Interrogator and Solution of Misreading Problem
Author :
Hong, Xia ; Zhe-zhuang, Ding
Author_Institution :
Sch. of Control & Comput. Eng., North China Electr. Power Univ., Beijing, China
Abstract :
To solve the problem that traditional RFID interrogator has no operating system and can only identify a short distance, this paper designed one UHF RFID interrogator based on S3C2440A controller and AS3992 UHF RFID chip. It uses the closed-loop network to control the output power, uses the antenna impedance match tuning network to reduce the reflected power. The maximum output power is 31d Bm. The identification distance is more than 10 meters. It solves the problem of misreading between the multi interrogators with the help of Linux operating system and host server. It has the advantages of long identification distance, high stability and no misreading. So it is more suitable for using in the mining logistics. It reduces the logistics cost and improves the logistics accuracy.
Keywords :
Linux; UHF devices; antennas; circuit tuning; closed loop systems; impedance matching; microprocessor chips; radiofrequency identification; AS3992 UHF RFID chip; Linux operating system; S3C2440A controller; UHF RFID interrogator; antenna impedance match tuning network; closed-loop network; host server; identification distance; logistics accuracy; logistics cost; mining logistics; misreading problem; multiinterrogators; output power control; reflected power reduction; Antennas; Impedance; Logistics; Radio frequency; Radiofrequency identification; Servers; Tuning; RFID interrogator; UHF; mining logistics; misreading;
Conference_Titel :
Computer Science & Service System (CSSS), 2012 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4673-0721-5
DOI :
10.1109/CSSS.2012.76