Processes and devices enabling the entry of a target into a zone to be detected
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 23, 2007
Grant Date -
Jun 2, 2005
app pub date -
Nov 24, 2004
filing date -
Nov 27, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process to detect the entry of a target into a zone, such process wherein it has the following stages: an illuminating beam is projected in the direction of the target by at least one source, the beam reflected on the target after its projection by one or more sources is received by at least two detectors placed in proximity to the zone and whose fields of detection incorporate a common part, each detector being synchronized to at least one of the sources, each travel distance separating the source and each detector via the target is computed or else only one of these distances is computed and then associated with a target presence criterion supplied by another detector, a target detection signal is delivered when the distance or distances thus computed, as well as qany presence criterion or criteria supplied, allow a point located geometrically in the zone under surveillance to be defined.
First Claim
Other Claims data not available
