Low power apparatus for preventing loss of cell phone and other high value items
First Claim
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1. A system for monitoring the distance between a mobile communications appliance and a tracking device comprising:
- At least one tracking device comprising an RF radio, programmable logic, and battery;
adapted toestablish a connection between the device and the mobile appliance,periodically measure and store the signal strength of the connection, wherein the signal strength is filtered by an algorithm executing on the programmable logic to reduce inaccuracies in the measured signal strength,compare the signal strength to previously stored values; and
,communicate data including least one of the signal strength or a parameter derived from the signal strength to the mobile appliance when the signal strength varies from stored values by a predetermined amount; and
,an application executing on the mobile appliance adapted to alert a user when the data communicated from the tracking device indicates the separation between the tracking and the appliance exceeds a predetermined distance.
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Abstract
A system for the prevention of loss of wallets, keys, purses and the like. The system uses a programmable wireless appliance such as a cell phone as a wireless tracker, and utilizes lightweight wireless tag devices attached to the items to protected. A software application executes on the wireless appliance to query the wireless tags and determines when any part of the system is going out of range.
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Citations
9 Claims
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1. A system for monitoring the distance between a mobile communications appliance and a tracking device comprising:
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At least one tracking device comprising an RF radio, programmable logic, and battery;
adapted toestablish a connection between the device and the mobile appliance, periodically measure and store the signal strength of the connection, wherein the signal strength is filtered by an algorithm executing on the programmable logic to reduce inaccuracies in the measured signal strength, compare the signal strength to previously stored values; and
,communicate data including least one of the signal strength or a parameter derived from the signal strength to the mobile appliance when the signal strength varies from stored values by a predetermined amount; and
,an application executing on the mobile appliance adapted to alert a user when the data communicated from the tracking device indicates the separation between the tracking and the appliance exceeds a predetermined distance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification