DETECTION OF A POSITION OF AN OBJECT
First Claim
1. A method for estimating a position of an object, said method comprising:
- receiving a radio wave from each radio frequency identification (RFID) tag of N RFID tags affixed to the object at different positions at the object, wherein N is at least 2;
detecting, from the received radio waves, a position of each RFID tag;
estimating, by a processor, a position of each RFID tag from analysis of the detected positions, wherein said estimating comprises utilizing, for n=1, 2, . . . , N, a specified probability function P(′
pn|pn) denoting a probability that the estimated position of RFID tag n is pn if the detected position of RFID tag n is pn, and wherein ′
pn and pn are vectors from an origin of a coordinate system to the detected position and the estimated position, respectively, of the RFID tag n; and
said processor ascertaining the position of the object from analysis of the estimated positions.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and associated system for estimating a position of an object. A radio wave is received from each radio frequency identification (RFID) tag of N RFID tags affixed to the object at different positions at the object (N≧2). A position of each RFID tag is detected from the received radio waves. A position of each RFID tag is estimated from analysis of the detected positions. The estimating includes utilizing, for n=1, 2, . . . , N, a specified probability function P(′pn|pn) denoting a probability that the estimated position of RFID tag n is pn if the detected position of RFID tag n is pn, wherein ′pn and pn are vectors from an origin of a coordinate system to the detected position and the estimated position, respectively, of the RFID tag n. The position of the object is ascertained from analysis of the estimated positions.
-
Citations
20 Claims
-
1. A method for estimating a position of an object, said method comprising:
-
receiving a radio wave from each radio frequency identification (RFID) tag of N RFID tags affixed to the object at different positions at the object, wherein N is at least 2; detecting, from the received radio waves, a position of each RFID tag; estimating, by a processor, a position of each RFID tag from analysis of the detected positions, wherein said estimating comprises utilizing, for n=1, 2, . . . , N, a specified probability function P(′
pn|pn) denoting a probability that the estimated position of RFID tag n is pn if the detected position of RFID tag n is pn, and wherein ′
pn and pn are vectors from an origin of a coordinate system to the detected position and the estimated position, respectively, of the RFID tag n; andsaid processor ascertaining the position of the object from analysis of the estimated positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A system for estimating a position of an object, said system comprising:
-
means for receiving a radio wave from each radio frequency identification (RFID) tag of N RFID tags affixed to the object at different positions at the object, wherein N is at least 2; means for detecting, from the received radio waves, a position of each RFID tag; means for estimating a position of each RFID tag from analysis of the detected positions, wherein said estimating comprises utilizing, for n=1, 2, . . . , N, a specified probability function P(′
pn|pn) denoting a probability that the estimated position of RFID tag n is pn if the detected position of RFID tag n is pn, and wherein ′
pn and pn are vectors from an origin of a coordinate system to the detected position and the estimated position, respectively, of the RFID tag n; andmeans for ascertaining the position of the object from analysis of the estimated positions.
-
-
11. A system comprising a receiving unit and a control unit collectively configured to perform a method for estimating a position of an object, said receiving unit coupled to the control unit, said method comprising:
-
said receiving unit receiving a radio wave from each radio frequency identification (RFID) tag of N RFID tags affixed to the object at different positions at the object, wherein N is at least 2; said receiving unit detecting, from the received radio waves, a position of each RFID tag; estimating, by a processor of the control unit, a position of each RFID tag from analysis of the detected positions, wherein said estimating comprises utilizing, for n=1, 2, . . . , N, a specified probability function P(′
pn|pn) denoting a probability that the estimated position of RFID tag n is pn if the detected position of RFID tag n is pn, and wherein ′
pn and pn are vectors from an origin of a coordinate system to the detected position and the estimated position, respectively, of the RFID tag n; andsaid processor ascertaining the position of the object from analysis of the estimated positions. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification