RF based positioning and intrusion detection using a wireless sensor network

A wireless sensor system includes an array of wireless nodes, each wireless node including a wireless transceiver transmitting over the radio frequency (RF) and a processor. The array of wireless nodes is distributed over an area. In operation, the array of wireless node determines the presence of a...

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Bibliographische Detailangaben
1. Verfasser:	HITT DALE K
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED FISHING FORESTRY HORTICULTURE HUMAN NECESSITIES HUNTING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING TRAPPING WATERING
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Beschreibung
Zusammenfassung:	A wireless sensor system includes an array of wireless nodes, each wireless node including a wireless transceiver transmitting over the radio frequency (RF) and a processor. The array of wireless nodes is distributed over an area. In operation, the array of wireless node determines the presence of an object within the area by measuring the RF power between a neighboring pair of wireless nodes. In one embodiment, an object is present in the area when the RF power between a first wireless node and a second neighboring wireless node is less than a predetermined value.