Location based services for RFID and sensor networks
First Claim
1. A method for generating sensor tag locations expressed in a three-dimension global coordinate system from sensor tag locations expressed in three-dimensional local coordinate systems of mobile readers that read each tag and for updating the paths of each mobile reader, the method comprising:
- receiving sensor data from one or more mobile reader agents;
receiving tag location data that describes the location of one or more sensor tags expressed in local coordinates of a subspace of the mobile reader agent that read the sensor tag;
converting the tag location data into a global coordinate system that is common to all mobile reader agents; and
updating one or more paths of one or more of the one or more mobile reader agents to increase the coverage of reading tags in the subspace of the mobile reader agent, wherein updating the one or more paths of one or more of the one or more mobile reader agents to increase the coverage of reading tags in the subspace of the mobile reader agent comprises computing a path for the mobile reader agent around obstacles that are expressed in the form;
χ
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obsij={χ
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Accused Products
Abstract
Systems and methods for generating sensor tag locations expressed in a three-dimension global coordinate system from sensor tag locations expressed in three-dimensional local coordinate systems of mobile readers that read each tag and for updating the paths of each mobile reader are disclosed. In one embodiment, a method includes receiving sensor data from one or more mobile reader agents, receiving tag location data that describes the location of one or more sensor tags expressed in local coordinates of the subspace of the mobile reader agent that read the sensor tag, converting the tag location data into a global coordinate system that is common to all mobile reader agents, and updating one or more paths of one or more mobile reader agents to increase the coverage of reading tags in the subspace of the mobile reader agent.
49 Citations
18 Claims
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1. A method for generating sensor tag locations expressed in a three-dimension global coordinate system from sensor tag locations expressed in three-dimensional local coordinate systems of mobile readers that read each tag and for updating the paths of each mobile reader, the method comprising:
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receiving sensor data from one or more mobile reader agents; receiving tag location data that describes the location of one or more sensor tags expressed in local coordinates of a subspace of the mobile reader agent that read the sensor tag; converting the tag location data into a global coordinate system that is common to all mobile reader agents; and updating one or more paths of one or more of the one or more mobile reader agents to increase the coverage of reading tags in the subspace of the mobile reader agent, wherein updating the one or more paths of one or more of the one or more mobile reader agents to increase the coverage of reading tags in the subspace of the mobile reader agent comprises computing a path for the mobile reader agent around obstacles that are expressed in the form;
χ
obsi={χ
∈
X|Ai(χ
i)∩
0≠
Ø
}and χ
obsij={χ
∈
X|Ai(χ
i)∩
Aj(χ
j)≠
Ø
} where - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A sensor tag reader and location system for generating sensor tag locations expressed in a three-dimension global coordinate system from sensor tag locations expressed in three-dimensional local coordinate systems of mobile readers that read each tag and for updating the paths of each mobile reader, the system comprising:
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a processor; and memory comprising an inventory and an agent control application; wherein the processor, aided by the inventory and agent control application, is configured to; receive sensor data from one or more mobile reader agents; receive tag location data that describes the location of one or more sensor tags expressed in local coordinates of a subspace of the mobile reader agent that read the sensor tag; convert the tag location data into a global coordinate system that is common to all mobile reader agents; and update one or more paths of one or more of the one or more mobile reader agents to increase the coverage of reading tags in the subspace of the mobile reader agent, wherein the processor being configured to update the one or more paths of one or more of the one or more mobile reader agents to increase the coverage of reading tags in the subspace of the mobile reader agent further comprises the processor being configured to compute a path for the mobile reader agent around obstacles that are expressed in the form;
xobsi={x∈
X|Ai(xi)∩
0≠
Ø
}and xobsij={x∈
X|Ai(xi)∩
Aj(xj)≠
Ø
} where - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification