REAL-TIME LOCATION SYSTEM USING TAG INTERROGATOR AND EMBEDDED OR FIXED TAG TRANSMITTERS
First Claim
1. A system for tracking vehicles within a terminal, comprisingat least one tag interrogator mounted on a vehicle to be identified and tracked within the terminal and operative for emitting a signal containing data identifying the vehicle to which the tag interrogator is mounted;
- at least one tag transmitter fixed at a known location within the terminal where vehicles are to be identified and receptive to a tag interrogator on a vehicle when the vehicle passes within proximity to the fixed tag transmitter for transmitting a wireless RF signal having data identifying the tag transmitter and identifying the tag interrogator as an identifier for the vehicle to which the tag interrogator is mounted; and
at least one access point positioned at the terminal for receiving the RF signal from the tag transmitter for subsequent processing to verify vehicle identity at the known location.
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0 Petitions
Accused Products
Abstract
A system tracks vehicles within a terminal and includes at least one tag interrogator mounted on a vehicle to be identified and tracked within the terminal. The tag interrogator is operative for emitting a signal containing data identifying the vehicle to which the tag interrogator is mounted. At least one tag transmitter is fixed at a known location within the terminal where vehicles are to be identified and receptive to a tag interrogator on the vehicle when the vehicle passes within proximity to the fixed tag transmitter for transmitting a wireless RF signal having data identifying the tag transmitter and identifying the tag interrogator as an identifier for the vehicle to which the tag interrogator is mounted. At least one access point is positioned at the terminal for receiving the RF signal from the tag transmitter for subsequent processing to verify vehicle identity at the known location.
60 Citations
25 Claims
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1. A system for tracking vehicles within a terminal, comprising
at least one tag interrogator mounted on a vehicle to be identified and tracked within the terminal and operative for emitting a signal containing data identifying the vehicle to which the tag interrogator is mounted; -
at least one tag transmitter fixed at a known location within the terminal where vehicles are to be identified and receptive to a tag interrogator on a vehicle when the vehicle passes within proximity to the fixed tag transmitter for transmitting a wireless RF signal having data identifying the tag transmitter and identifying the tag interrogator as an identifier for the vehicle to which the tag interrogator is mounted; and at least one access point positioned at the terminal for receiving the RF signal from the tag transmitter for subsequent processing to verify vehicle identity at the known location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for tracking an asset within a monitored environment, comprising:
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at least one tag interrogator mounted on an asset to be identified and tracked within the monitored environment and operative for emitting a signal containing data identifying the asset to which the tag interrogator is mounted; at least one tag transmitter fixed at a known location within the monitored environment where assets are to be identified and receptive to a tag interrogator on the asset when the asset passes within proximity to the fixed tag transmitter for transmitting a wireless RF signal having data identifying the tag transmitter and identifying the tag interrogator as an identifier for the asset to which the tag interrogator is mounted; and at least one access point positioned at the terminal for receiving the RF signal from the tag transmitter for subsequent processing to verify the identity of the asset at the known location. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. A method for tracking vehicles within a terminal, comprising:
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emitting a signal from a tag interrogator mounted on a vehicle to be identified and tracked in the terminal and containing data identifying the vehicle to which the tag interrogator is mounted; transmitting a wireless RF signal from at least one tag transmitter fixed at a known location within the terminal where vehicles are to be identified in response to the vehicle having the tag interrogator passing within proximity to the fixed tag transmitter, wherein the RF signal includes data identifying the tag transmitter and identifying the tag interrogator and vehicle; and receiving the RF signal from the tag transmitter within at least one access point for subsequent processing to verify vehicle identity at the known location. - View Dependent Claims (21, 22, 23, 24, 25)
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Specification