Application Of Location Detection System Using
Active Type RFID Tags To Railways
Author(s)
K. Seki, S. Suzuki, M. Ukai & R. Tsuchiya
Abstract
As active type RFID tags can transmit their identification information about
10 m by radio, we can calculate locations of persons who hold tags with an
accuracy of a few meters, by installing tag receivers appropriately and by the
function of a location calculating server which analyzes the gathered information
regarding receivers which have received the tags’ identification information. We
are developing two application systems to make use of active type RFID tags.
The first one is an information provision system for passengers. In this system,
passengers hold tags, location calculating servers are installed at stations and in
trains, and an information delivering server is located at a management center.
The location calculating servers at stations always transmit calculated location
information of tags to information delivering server via an Intranet. On the other
hand, the location calculating servers in trains store the calculated location
information while trains are running between stations and transmit them at a
stroke via communications lines such as wireless Local Area Networks to the
information delivering server when the trains stop at stations. Therefore, the
information delivering server can trace the locations of passengers continuously
and manage their status such as entering into stations and getting off trains
almost on time. Accordingly, it can deliver guidance information to mobile
phones of the passengers via e-mail at appropriate places and timing. The
second one is a system to cope with abnormal situations. In this system, station
staffs hold tags. When a video surveillance system detects an illegal event such
as violence and suspicious loitering, it transmits an alarm to the nearest staff to
directly go to the location. As the locations of the staff are detected by tags
indoors and by Global Positioning System (GPS) outdoors, they can be
continuously traced wherever they are.
Keywords: active type RFID tag, Information provision system, video
surveillance system.
Keywords
active type RFID tag, Information provision system, video
surveillance system.
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