Efficient monitoring of inventory items
First Claim
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1. A method for monitoring items at an inventory location, comprising:
- selecting an antenna element at the inventory location;
enabling the antenna element to receive a plurality of RFID tag identifiers, each of the plurality of RFID tag identifiers representative of an RFID tag of a plurality of RFID tags, each of the plurality of RFID tags associated with an item located at the inventory location and wherein the item is at least partially within a field of the antenna element;
receiving the plurality of RFID tag identifiers;
sending, using the antenna element, a signal that includes a first RFID tag identifier of the plurality of RFID tag identifiers;
receiving, at the antenna element, a response from a first RFID tag associated with the first RFID tag identifier; and
determining from the response and the first RFID tag identifier that a first item associated with the first RFID tag remains located at the inventory location.
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Abstract
Described is a system and method for efficiently tracking inventory using RFID tags (e.g., RFID tags). For example, an RFID tag reader may perform an inventory mode to receive RFID tag identifiers from RFID tags located within a range of an antenna element of the RFID tag reader. Those RFID tag identifiers may be included on an inventory table associated with the antenna element. In a second mode, the RFID tag reader may perform a targeted read. During a targeted read mode, the RFID tag reader, utilizing the antenna element, may issue a request for a selected RFID tag identified in the inventory table to reply to the request.
83 Citations
21 Claims
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1. A method for monitoring items at an inventory location, comprising:
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selecting an antenna element at the inventory location; enabling the antenna element to receive a plurality of RFID tag identifiers, each of the plurality of RFID tag identifiers representative of an RFID tag of a plurality of RFID tags, each of the plurality of RFID tags associated with an item located at the inventory location and wherein the item is at least partially within a field of the antenna element; receiving the plurality of RFID tag identifiers; sending, using the antenna element, a signal that includes a first RFID tag identifier of the plurality of RFID tag identifiers; receiving, at the antenna element, a response from a first RFID tag associated with the first RFID tag identifier; and determining from the response and the first RFID tag identifier that a first item associated with the first RFID tag remains located at the inventory location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A computing system, comprising:
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one or more processors; and a memory coupled to the one or more processors and storing program instructions that when executed by the one or more processors cause the one or more processors to at least; select an antenna element at an inventory location; send a first instruction to enable the antenna element to receive a plurality of RFID tag identifiers, each of the plurality of RFID tag identifiers representative of an RFID tag of a plurality of RFID tags, each of the plurality of RFID tags associated with an item located at the inventory location and wherein the item is at least partially within a field of the antenna element; receive the plurality of RFID tag identifiers; send a second instruction to enable the antenna element to send a signal that includes a first RFID tag identifier of the plurality of RFID tag identifiers; determine that a response to the signal that includes the first RFID tag identifier has not been received; and determine from the first RFID tag identifier and based at least in part on the determination that a response has not been received, that a first item associated with the first RFID tag has been picked from the inventory location. - View Dependent Claims (11, 12, 13, 14)
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15. A method, comprising:
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receiving from an antenna element positioned at an inventory location, a plurality of RFID tag identifiers, each of the plurality of RFID tag identifiers representative of an RFID tag of a plurality of RFID tags, each of the plurality of RFID tags associated with an item located at the inventory location and wherein the item is at least partially within a field of the antenna element; sending, using the antenna element, a signal that includes a first RFID tag identifier of the plurality of RFID tag identifiers; receiving from the antenna element a response from a first RFID tag associated with the first RFID tag identifier; and determining from the response and the first RFID tag identifier that a first item associated with the first RFID tag is located at the inventory location. - View Dependent Claims (16, 17, 18)
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19. A method, comprising:
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enabling an antenna element; in response to enabling, receiving a plurality of RFID tag identifiers; subsequent to receiving the plurality of RFID tag identifiers, sending, using the antenna element, a signal that includes a first RFID tag identifier of the plurality of RFID tag identifiers; subsequent to sending the signal, receiving, at the antenna element, a response associated with the first RFID tag identifier; and determining from the response that a first item associated with the first RFID tag is within a field of the antenna element. - View Dependent Claims (20, 21)
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Specification