Moving object/person`s perimeter detection device for monitoring e.g. building interior, has infrared and hyperfrequency channels with transmission and reception antennas that are constituted of squared patch and inclined rectangular patch

摘要

#CMT# #/CMT# The device has a passive infrared channel and a hyperfrequency channel for generating double detection lobes connected to frequency shift key modulation Doppler sensor to monitor a detection zone located in length in front of the sensor and to monitor a zone located at a base of the sensor at same time. A transmission antenna (3) and a reception antenna (7) of the hyperfrequency channel are constituted of supply lines, a squared shaped patch (1) and a rectangular patch (2) inclined at forty five degree. The patches have Teflon(RTM: PTFE) glass and are coated with copper. #CMT# : #/CMT# An independent claim is also included for a method for utilizing a perimeter detection device. #CMT#USE : #/CMT# Device for perimeter detection of a moving object or moving person for monitoring interior of a site e.g. building, industrial site, PME/PMI, institution, stockyard of vehicles or warehouse for protecting the site against intrusion risks (all claimed). #CMT#ADVANTAGE : #/CMT# The design of the detection device permits to modify sensitivity thresholds of the infrared and hyperfrequency channels with respect to external conditions e.g. wind, rain, or high temperature, thus optimizing performance of the channels with respect to weather conditions. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a representation of a frequency shift key Doppler sensor utilizing two transmission and reception antennas with double lobes.`(Drawing includes non-English language text)` 1 : Squared shaped patch 2 : Rectangular patch 3 : Transmission antenna 5 : Microwave amplifier 7 : Reception antenna.