Sicurit: outdoor dual technology barriers absolute plus
ABSOLUTE PLUS is a high security Dual Technology Barrier that combines Microwave and Infrared Technology to enhance capability of detection while drastically reducing false alarm rates (FAR).
Available in 3 ranges (200/80/50mt.), ABSOLUTE PLUS consists in a pair (TX and RX) of extruded aluminium columns in which Infrared Beam and Microwave Technology are combined into one unit; both sensing elements are located in a single casing, and are connected electronically using a special “AND” Logic Function. Since the two sensors will not detect an intrusion precisely at the same time the system has been designed to generate an alarm when both sensors produce an output in a preselected time interval.
SYSTEM PHILOSOPHY
False alarms are often caused by external, atmospheric conditions, or by the movements of animals.
The most frequent causes, as far as atmospheric conditions are concerned, are due to wind that causes movements of objects like pages of newspaper or plastic bags, which may interrupt the infrared beam.
As far as animals are concerned, the most frequent causes are due to the movements of stray dogs and cats or other wild animals, which can easily interrupt the infrared beams, especially those installed about 40 to 50 cm above the ground. Other causes of interruption of the beams installed at the top may be birds, which happens very frequently in open-field installations.
The built-in disqualifying circuits deactivate the IR Beams if a strong attenuation of the signal occurs caused by, for example, fog, heavy rain or heavy snowfall.
If the Infrared disqualification circuits start functioning, the sensitivity of the Microwave device decreases automatically, and during this time span (of disqualification) the system functions using one technology only (the Microwave).
ABSOLUTE PLUS has been designed to protect outdoor sensitive areas like:
Government buildings, airports, solar parks, military sites, prisons, correctional facilities, nuclear plants, refineries, sensitive buildings and land areas, communications facilities, banking facilities, ports, museums, industrial & Commercial Sites and sites requiring maximum security.
by the Editorial Staff
