Title :
Tag movement direction estimation methods in an RFID gate system
Author :
Oikawa, Yoshinori
Author_Institution :
Access Devices Div., NEC TOKIN Corp., Shiroishi, Japan
Abstract :
An RFID system using many RF tags has some advantages over a bar code system such as simultaneous multi-reading and long read range. Especially, it has been strongly desired by logistics and the retail industry for efficiency of operation. Recently, user-friendly RFID systems are being studied. We focused on a gate system using RFID technologies. It will be very useful for the efficiency of inventory management and the check of illicit smuggling out. In this paper, a new method of tag movement direction detection using the difference of passing time of two antennas without external expensive sensors is proposed. Some experimental results of this method are also shown and its feasibility is proved.
Keywords :
antennas; radio direction-finding; radiofrequency identification; RFID gate system; antenna passing time; bar code system; illicit smuggling out checking; inventory management; logistics industry; radio frequency identification; retail industry; tag movement direction estimation method; Antenna measurements; Delay estimation; Directive antennas; Inventory management; Logistics; National electric code; Radio frequency; Radiofrequency identification; Sensor systems; Time measurement;
Conference_Titel :
Wireless Communication Systems, 2009. ISWCS 2009. 6th International Symposium on
Conference_Location :
Tuscany
Print_ISBN :
978-1-4244-3584-5
Electronic_ISBN :
978-1-4244-3584-5
DOI :
10.1109/ISWCS.2009.5285228
