Active virtual fence using mesh networked rf tags
AssigneeSandlinks Systems Ltd.
InventorDan Raphaeli
Life of this patent
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Abstract
A system capable of monitoring an area and detecting a disturbance with the area. The system has a plurality of ultra-wide band radio frequency tags, each of the tags including a digital signal processing module configured to monitor changes in radio frequency multipath properties of received packets transmitted by at least one other of the tags. Changes in the radio frequency multipath properties may be caused by a disturbance indicative of an object in the vicinity of the tags. A corresponding method is also disclosed.
Claims10
A system capable of monitoring an area and detecting a disturbance with the area, the system comprising a plurality of ultra-wide band radio frequency tags, each of said tags including a digital signal processing module configured to monitor changes in radio frequency multipath properties of received packets transmitted by at least one other of said tags, said changes being caused by a disturbance indicative of an object in the vicinity of the tags.
A method for detecting the entry of an object into a monitored area, the method comprising:
- (a) deploying a plurality of ultra-wide band radio frequency tags, each of said tags including a digital signal processing module configured to monitor changes in radio frequency multipath properties;
- (b) monitoring, by at least one said tag, radio frequency multipath properties of received packets transmitted by at least one other of said tags;
- and
- (c) determining if any changes in said frequency multipath properties have occurred.
Dependencies are inferred from the claim text.