METHODS AND SYSTEMS FOR TRACKING OBJECTS OR PEOPLE WITHIN A DESIRED AREA
First Claim
1. A method for tracking a location of an object, comprising the steps of:
- providing a motion detector on a first radio frequency device, the motion detector detecting motion of the first radio frequency device;
transmitting radio frequency location signals from the first radio frequency device to a second radio frequency device with time intervals between the transmissions;
decreasing the time intervals between the transmissions from the first radio frequency device to the second radio frequency device in response to the detection of motion by the motion detector; and
periodically determining a separation distance between the first radio frequency device and the second radio frequency device based on the radio frequency location signals transmitted from the first radio frequency device to the second radio frequency device.
3 Assignments
0 Petitions
Accused Products
Abstract
A method for tracking the object includes providing a motion detector on a first radio frequency device and detecting the motion of the first radio frequency device, transmitting radio frequency location signals from the first radio frequency device to a second radio frequency device with time intervals between the transmissions, decreasing the time intervals between the transmissions from the first radio frequency device to the second radio frequency device in response to the detection of motion by the motion detector, and periodically determining a separation distance between the first radio frequency device and the second radio frequency device based on the radio frequency location signals transmitted from the first radio frequency device to the second radio frequency device.
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Citations
20 Claims
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1. A method for tracking a location of an object, comprising the steps of:
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providing a motion detector on a first radio frequency device, the motion detector detecting motion of the first radio frequency device; transmitting radio frequency location signals from the first radio frequency device to a second radio frequency device with time intervals between the transmissions; decreasing the time intervals between the transmissions from the first radio frequency device to the second radio frequency device in response to the detection of motion by the motion detector; and periodically determining a separation distance between the first radio frequency device and the second radio frequency device based on the radio frequency location signals transmitted from the first radio frequency device to the second radio frequency device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A security system for tracking a location of at least one object within an area defined by a boundary, the security system comprising:
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at least one first radio frequency device, each said first radio frequency device being coupled to a corresponding one said object, said at least one first radio frequency device adapted to periodically transmit radio frequency location signals; a second radio frequency device discrete from said first radio frequency device and configured to receive said radio frequency location signals; and at least one motion detector coupled with said at least one first radio frequency device, said at least one motion detector configured to detect when the at least one first radio frequency device is in motion; wherein said at least one first radio frequency device is configured to periodically transmit said radio frequency location signals at a first rate while said at least one first radio frequency device is not in motion, and wherein said at least one first radio frequency device is configured to periodically transmit said radio frequency location signals at a second rate in response to said motion detector detecting movement of said at least one first radio frequency device, said second rate being greater than said first rate. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A security system for tracking a location of an object within an area defined by a boundary, the security system comprising:
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a first radio frequency device adapted to be coupled to the object and to periodically transmit radio frequency location signals; a second radio frequency device discrete from said first radio frequency device and configured to receive said radio frequency location signals, said second radio frequency device being adapted to periodically calculate a separation distance between the first radio frequency device and the second radio device based on strengths of the radio frequency location signals; and a motion detector coupled with said first radio frequency device, said motion detector configured to detect when said first radio frequency device is in motion, said motion detector configured to initiate a wake up signal in response to said motion detector detecting motion of said first radio frequency device, wherein said second radio frequency device is configured to receive said wake up signal and wherein, in response to said second radio frequency device receiving said wake up signal, said second radio frequency device is configured to periodically calculate said separation distance at a greater periodic rate relative to a time before said second radio frequency device receives said wake up signal. - View Dependent Claims (17, 18, 19, 20)
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Specification