Positioning apparatus and method combining RFID, GPS and INS
First Claim
1. An apparatus for positioning a mobile object in the mobile object by combining Radio Frequency Identification (RFID), a Global Positioning System (GPS) and an Inertial Navigation System (INS), comprising:
- a GPS signal receiving means for receiving GPS signals from a satellite and acquiring GPS positioning information of the mobile object;
an RFID reading means for receiving and reading an RFID tag identification (ID) transmitted from RFID tags according to movement of the mobile object;
an INS sensing means for acquiring velocity information, acceleration information and direction information of the mobile object by using a plurality of accelerating sensors and gyro sensors;
a GPS/RFID selecting means for generating selection information for a positioning algorithm based on whether the GPS positioning information transmitted from the GPS signal receiving means is used or not and whether the RFID tag ID is acquired in the RFID reading means; and
an integrated positioning means for acquiring positioning information of the mobile object by executing any one selected from a GPS/INS positioning algorithm, an RFID/INS positioning algorithm, and an INS positioning algorithm based on the selection information of the GPS/RFID selecting means.
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Abstract
Provided is an apparatus and method for positioning a mobile object by combining Radio Frequency Identification (RFID), Global Positioning System (GPS), and Inertial Navigation System (INS). The apparatus and method can acquire positioning information stably and continuously even when GPS signals are cut off by combining the RFID positioning information with INS positioning information. The positioning apparatus includes: a GPS signal receiving unit; an RFID reading unit; an INS sensing unit; a GPS/RFID selecting unit for generating selection information for a positioning algorithm based on whether GPS positioning information transmitted from the GPS signal receiving unit can be used or not and whether a tag ID is acquired in the RFID reading unit; and an integrated positioning unit for acquiring the positioning information of the mobile object by executing any one selected from a group of a GPS/INS positioning algorithm, an RFID/INS positioning algorithm, and an INS positioning algorithm based on the selection information of the GPS/RFID selecting unit.
145 Citations
15 Claims
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1. An apparatus for positioning a mobile object in the mobile object by combining Radio Frequency Identification (RFID), a Global Positioning System (GPS) and an Inertial Navigation System (INS), comprising:
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a GPS signal receiving means for receiving GPS signals from a satellite and acquiring GPS positioning information of the mobile object;
an RFID reading means for receiving and reading an RFID tag identification (ID) transmitted from RFID tags according to movement of the mobile object;
an INS sensing means for acquiring velocity information, acceleration information and direction information of the mobile object by using a plurality of accelerating sensors and gyro sensors;
a GPS/RFID selecting means for generating selection information for a positioning algorithm based on whether the GPS positioning information transmitted from the GPS signal receiving means is used or not and whether the RFID tag ID is acquired in the RFID reading means; and
an integrated positioning means for acquiring positioning information of the mobile object by executing any one selected from a GPS/INS positioning algorithm, an RFID/INS positioning algorithm, and an INS positioning algorithm based on the selection information of the GPS/RFID selecting means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for positioning a mobile object by combining Radio Frequency Identification (RFID), a Global Positioning System (GPS) and an Inertial Navigation System (INS), comprising the steps of:
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a) receiving GPS signals from a satellite and acquiring GPS positioning information of the mobile object;
b) receiving and reading an RFID tag identification (ID) transmitted from RFID tags according to movement of the mobile object;
c) acquiring velocity information, acceleration information and direction information of the mobile object by using a plurality of accelerating sensors and gyro sensors;
d) generating algorithm selection information for a positioning algorithm based on whether GPS positioning information acquired in the GPS signal receiving step a) is used or not and whether the RFID tag ID is acquired; and
e) acquiring the positioning information of the mobile object by executing any one selected from a GPS/INS positioning algorithm, an RFID/INS positioning algorithm, and an INS positioning algorithm based on the algorithm selection information. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification