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US 7,852,262 B2Granted
Wireless mobile indoor/outdoor tracking system
AssigneeCybernet Systems Corporation
InventorsPavan K. Namineni, Trevor Davey, Gary Siebert, Charles J. Jacobus
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Abstract
This invention is a wireless mobile indoor/outdoor tracking system. It is designed to track the absolute position of all nodes in a network indoors and outdoors. The system uses GPS positioning when a signal is available and RF ranging when it is unavailable. When indoors, a minimum of three network nodes must receive a GPS signal to determine absolute position. A mesh network is used to make the system mobile and to create an avenue for data to be transmitted to a remote base station.
Claims5
A indoor/outdoor positioning system, comprising:
- a plurality of geo telemetry units (GTUs), each GTU containing:
- a global positioning system (GPS) satellite receiver, a
- a radio-frequency (RF) transceiver, and
- a microcontroller (MCU) in electronic communication with the GPS receiver and RF transceiver, each MCU being operative to perform the following functions:
- (a) automatically determine the absolute position of the GTU based upon GPS if GPS signals are available;
- (b) if GPS signals are not available, automatically communicating with other GTUs to determine its position relative to at least three other GTUs using RF ranging;
- and
- (c) automatically communicate its location to other GTUs, regardless of whether position was determined through GPS or RF ranging.
5 more elements
Dependencies are inferred from the claim text.