US 10,311,722 B2Granted

Vehicle identification and/or monitoring system

AssigneeLicensys Australasia Pty Ltd

InventorsAlbertus Jacobus Pretorius, Andy Goran Olsson

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Abstract

An apparatus is disclosed which is operable to detect and identify vehicles, where individual vehicles each have at least one RFID communication device mounted thereon close to the surface on which the vehicle travels, and a vehicle's RFID communication device(s) is/are operable to transmit to the apparatus a signal indicating that vehicle's identity, the apparatus including an RFID reader, the RFID reader having an antenna which is operable to be positioned on or in the surface on which the vehicles travel, and the antenna (which may be an “adapted dipole” antenna) is operable to transmit a signal to a vehicle's RFID communication device(s) and to receive a backscattered modulated signal from a RFID communication device on that vehicle indicating that vehicle's identity, such that that vehicle is thereby detected and identified by the apparatus.

An apparatus operable for use in detecting and identifying vehicles, where individual vehicles each have thereon at least one radio-frequency identification (RFID) communication device with a directional device antenna close to a surface on which the vehicles travel, a radiation pattern of each directional device antenna being directed parallel to a direction of vehicle travel, and each RFID communication device on the vehicle is operable, if correctly operational, to backscatter a modulated ultra-high frequency (UHF) signal to the apparatus indicating that particular vehicle's identity, the apparatus including an RFID reader, the RFID reader having a reader antenna operable to be positioned on or in the surface on which the vehicles travel, the reader antenna and the device antenna defining a read zone, and the RFID reader being operable, while the RFID communication device on the vehicle is in the read zone, to transmit a signal to the RFID communication device on the vehicle and, if the RFID communication device on the vehicle is correctly operational, to receive the modulated backscattered UHF signal from the RFID communication device on the vehicle indicating that particular vehicle's identity, so that that vehicle is identified using the apparatus, wherein a radiation pattern of the reader antenna has a shape that approximates a wide and low elliptic torus or a squashed doughnut located on or just above the surface on which the vehicles travel and centered on the position of reader antenna so a region of space is within the read zone, the region of space:

extending from approximately 5 meters (m) horizontally before the RFID reader antenna to approximately 5 m horizontally beyond the RFID reader antenna in the, or any, direction of vehicle travel,
being approximately 4 m wide horizontally, perpendicular to the direction of vehicle travel, and
extending from approximately 200 millimeters (mm) to approximately 1200 mm vertically above the surface on which the vehicles travel.

Facts

Application

15/302,248Filed 9 Apr 2015

Priority

AU 201490135614 Apr 2014

Published

US 2017/0032666 A12 Feb 2017

Granted

4 Jun 2019

Term ends

Not estimatedThe source records don’t support an estimate.

Classification14 codes

G08G 1/017
Detecting movement of traffic to be counted or controlled: identifying vehicles
G06K 7/10366
Sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves: the interrogation device being adapted for…
G06K 7/10425
The interrogation device being fixed in its position, such as an access control device for reading wireless access cards, or a wireless ATM: the…
G08G 1/0116
Based on the source of data: from roadside infrastructure, e.g. beacons

Abstract

Claims16