Method and system for calibrating a location system
AssigneeSymbol Technologies, Inc.
InventorSarosh Vesuna
Life of this patent
Estimating the term…
Abstract
The present invention is useful in connection with calibration of a wireless location system based on RF signals within a facility. Identification devices are provided at fixed locations which are selected within the facility. The RF environment is sampled at selected locations and data representing the sampled RF environment and the corresponding selected location is provided to a computer which maintains a database corrolating the RF environment data and the selected locations to be used with calibrating a location system.
Claims13
A method for calibrating a location system based on RF signals at a facility, comprising:
- placing one or more identification devices at selected locations in said facility;
- reading information from said one or more identification devices, said reading performed by a portable device;
- sampling the RF environment at a plurality of said selected locations in said facility, said sampling step performed by said portable device;
- signaling data representing said sampled RF environment and corresponding selected location in said facility to a computer;
- maintaining a database in said computer correlating said RF environment data and said information and said selected locations;
- and
- using said database to calibrate said location system.
A system for calibrating a location system based on RF signals at a facility, comprising:
- one or more identification devices at selected locations in said facility;
- one or more portable devices for reading information from said one or more identification devices;
- a receiver for sampling the RF environment at a plurality of said selected locations in said facility;
- and
- a computer for receiving data representing said sampled RF environment and corresponding selected location in said facility;
- wherein said computer is programmed to maintain a database correlating said RF environment data and said selected locations, and calibrate said location system using said database.
A method for calibrating a location system based on RF signals at a facility, comprising:
- placing one or more identification devices at selected locations in said facility;
- sampling the RF environment at a plurality of said selected locations in said facility;
- signaling data representing said sampled RF environment and corresponding selected location in said facility to a computer;
- maintaining a database in said computer correlating said RF environment data and said selected locations;
- and
- using said database to calibrate said location system;
- wherein said one or more identification devices comprise bar code labels encoding data representing said selected location, and wherein said sampling includes reading data from said bar code labels with a portable bar code reader, and wherein said signaling comprises sending said bar code data and said sampled RF environment data from said portable bar code reader by RF data communication.
A system for calibrating a location system based on RF signals at a facility, comprising:
- one or more identification devices at selected locations in said facility;
- a receiver for sampling the RF environment at a plurality of said selected locations in said facility;
- and
- a computer for receiving data representing said sampled RF environment and corresponding selected location in said facility;
- wherein said computer is programmed to maintain a database correlating said RF environment data and said selected locations and calibrate said location system using said database, and further wherein said one or more identification devices comprise bar code labels encoding said selected location, wherein said receiver is provided on a portable bar code reader, and wherein said portable bar code reader includes an RF data communications radio and is arranged to send data representing said bar code location data and said RF environment data to said computer by RF data communication.
Dependencies are inferred from the claim text.