RFID system for lifting devices
First Claim
1. A lifting device equipped with an RFID scanning system, said device comprising:
- an article receiving area configured for receipt of a stack of articles having RFID tags associated therewith;
a first scanning antenna at a first height relative to said article receiving area, and a second scanning antenna at a second height relative to said article receiving area above said first height;
a computer control system in communication with said first and second scanning antennas, said control system applying a verification parameter to RFID signals received by said second scanning antenna as opposed to said first scanning antenna to determine whether RFID tagged articles detected by said second scanning antenna are within said stack of articles; and
said verification parameter determined as a function of read rates of RFID signals detected by said first scanning antenna.
3 Assignments
0 Petitions
Accused Products
Abstract
A lifting device equipped with an RFID scanning system having an article receiving area configured for receipt of a stack of articles having RFID tags associated therewith. A first scanning antenna is provided at a first height relative to the article receiving area, and a second scanning antenna is provided at a second height relative to the article receiving area that is above the first height. A computer control system is in communication with the first and second scanning antennas and applies a verification parameter to RFID signals received by the second scanning antenna to determine whether RFID tagged articles detected by the second scanning antenna are within the stack of articles carried by the lifting device.
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Citations
13 Claims
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1. A lifting device equipped with an RFID scanning system, said device comprising:
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an article receiving area configured for receipt of a stack of articles having RFID tags associated therewith; a first scanning antenna at a first height relative to said article receiving area, and a second scanning antenna at a second height relative to said article receiving area above said first height; a computer control system in communication with said first and second scanning antennas, said control system applying a verification parameter to RFID signals received by said second scanning antenna as opposed to said first scanning antenna to determine whether RFID tagged articles detected by said second scanning antenna are within said stack of articles; and said verification parameter determined as a function of read rates of RFID signals detected by said first scanning antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A lifting device equipped with an RFID scanning system, said device comprising:
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a vertically movable carriage assembly configured for receipt of a stack of RFID tagged articles; a first scanning antenna configured on said carriage assembly at a first height so as to detect RFID tagged articles within the stack carried within said carriage assembly; a second scanning antenna supported above said carriage assembly and vertically movable with said carriage assembly, said second scanning antenna disposed at a second height so as to detect RFID tagged articles within the stack that are at a height above said carriage assembly; a computer control system in communication with said first and second scanning antennas, said control system applying a verification parameter to RFID signals received by said second scanning antenna as opposed to said first scanning antenna to determine whether RFID tagged articles detected by said second scanning antenna are within said stack of articles, said verification parameter determined as a function of read rates of RFID signals detected by said first scanning antenna from RFID tagged articles within said carriage assembly.
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10. A method for accounting for a stack of RFID tagged articles carried by a lifting device including any one of a clamp truck, forklift, or lift truck, said method comprising:
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scanning a lower portion of the articles within the stack with a first scanning antenna, and scanning an upper portion of the articles within the stack with a second scanning antenna disposed at a height above the first scanning antenna; applying a verification parameter to RFID signals received by the second scanning antenna as opposed to the first scanning antenna, the verification parameter establishing an acceptance criteria for determining whether RFID signals received by said second scanning antenna are from RFID tagged articles within the stack of articles; and said verification parameter determined as a function of read rates of RFID signals detected by said first scanning antenna. - View Dependent Claims (11, 12, 13)
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Specification