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Browse Prior Art Database

Data Communication System for Automatic Vehicle Identification

IP.com Disclosure Number: IPCOM000112177D
Original Publication Date: 1994-Apr-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 4 page(s) / 128K

Publishing Venue

IBM

Related People

Doganata, YN: AUTHOR [+2]

Abstract

Disclosed is an automatic vehicle identification method using data communication techniques. The method does not require driver intervention or vehicles to slow down and may find many applications in an intelligent vehicle/highway system. Toll roads and bridges are important sources of money for various services. The toll collection process, however, is the primary reason for congestion in most places. This is mainly because, the vehicles have to slow down or stop to pay for the toll. Similarly, traffic violators are detected by either radar systems or by the intervention of the police officers which cause major delays in the traffic.

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This is the abbreviated version, containing approximately 47% of the total text.

Data Communication System for Automatic Vehicle Identification

      Disclosed is an automatic vehicle identification method using
data communication techniques.  The method does not require driver
intervention or vehicles to slow down and may find many applications
in an intelligent vehicle/highway system.  Toll roads and bridges
are important sources of money for various services.  The toll
collection process, however, is the primary reason for congestion in
most places.  This is mainly because, the vehicles have to slow down
or stop to pay for the toll.  Similarly, traffic violators are
detected by either radar systems or by the intervention of the police
officers which cause major delays in the traffic.

      An automatic identification of a vehicle which does not require
speed reduction finds various applications in an intelligent
vehicle/highway system.  Possible applications are automatic toll
collection at the toll roads, bridges and parking lots, detection of
traffic violators, automatic charging and billing at the gas
stations, locating a stolen vehicle, etc.  Since the technique that
we will describe here is transparent to the drivers, the vehicles are
not required to slow down or they don't have to be stopped.
Alternative solutions include tagging the vehicles which require
optical readers and result in slowing down.

      A data communication system is designed to establish a two-way
communication between a base station and the vehicles that are
approaching it at their regular speeds.  The base station
continuously transmits a signal at a prespecified frequency asking
the vehicles to identify themselves.  All vehicles have a
transmitter/receiver system that scans a frequency range to detect
messages transmitted from the base station.  As soon as they receive
the message transmitted from the base station, they attempt to
register by using a multiaccess protocol.  The multiaccess protocol
allows them to register before they leave out of the communication
range.  The base station collects and stores the information on
vehicle identifications and their time of registration.  This
information is then sent to the central base station which is
connected to the other base stations by communication links.  Hence,
the vehicles that pass through a specific point are identified.

      Besides its application for automatic toll collection, the same
principle can also be used in the parking lots to determine parking
fees automatically.  The vehicles that occupy the parking slots are
identified and charged by using the same principles.  In intelligent
parking lots, instead of parking meters, we suggest to have a
transmitter/receiver system.  Similarly, the vehicles are identified
automatically and billed later for the services they had in the gas
stations.  One other possible application is that the speed of a
vehicle can be checked by using the same system.  The time it takes
to travel between two base st...