Colecciones nacionales e internacionales de patentes

1. (WO2011156047) MULTILANE VEHICLE TRACKING SYSTEM

Pub. No.:    WO/2011/156047    International Application No.:    PCT/US2011/030751
Publication Date: Fri Dec 16 00:59:59 CET 2011 International Filing Date: Fri Apr 01 01:59:59 CEST 2011
IPC: G07B 15/06
Applicants: 3M INNOVATIVE PROPERTIES COMPANY
ROESNER, Bruce, B.
Inventors: ROESNER, Bruce, B.
Title: MULTILANE VEHICLE TRACKING SYSTEM
Abstract:
A vehicle tracking system and method of tracking vehicles in multiple traffic lanes is disclosed. One system includes an RFID reader including a plurality of antenna ports. The system also includes a first antenna connected to a first antenna port of the plurality of antenna ports, the first antenna oriented toward a first lane of traffic. The system further includes a second antenna connected to the first antenna port and oriented toward a second lane of traffic. The system also includes a third antenna connected to a second antenna port of the plurality of antenna ports, the third antenna oriented toward the first lane of traffic. In some cases, the RFID reader is configured to detect the existence of a vehicle in a lane based on detection of an RFID device associated with the vehicle at two or more of the plurality of antenna ports.