signal. For example, single zone
detectors combine the signals from
shoe shanks with those from a watch
or objects carried in a shirt and trouser
pockets. If the cumulative signal from
these objects equals the size of the
signal generated by the object being
targeted, an unwanted alarm occurs.
By way of contrast, Intelliscan processes
the signals from these objects in different
zones, thus minimizing the cumulative
signal effect.
Compensates for Detection Losses
Caused by Re-bar in Floors
Non-uniform detection is frequently
caused by re-bar in a floor or wall.
External metal can distort a detector’s
magnetic field and may cause a loss in
detection. For example, re-bar in a sup-
port floor produces a dead spot at foot
and ankle height. As a consequence,
metal objects that pass through the dead
spot are undetected at normal sensitivity
levels.
This is corrected in a conventional detec-
tor by raising its overall sensitivity to a
value where detection occurs at ground
level. However, if a floor is heavily rein-
forced with steel, a significant increase in
sensitivity must be applied to achieve
detection. This results in the upper
regions of the detector becoming overly
sensitive and an increase in unwanted
alarms.
The ability to precisely adjust the sensi-
tivity of the individual zones of multi- and
dual-zone detectors, permits hot spots
and dead spots (high and low sensitivity
regions) to be eliminated. For example,
detection losses caused by re-bar in a
floor can be compensated by increasing
the ground zone’s sensitivity to a level
that allows the targeted object to be
detected. Unlike a conventional
detector, the upper regions of the arch
way can be operated at normal sensitivi-
ty settings. Uniform detection is main-
tained throughout the archway and
unwanted alarms prevented.
Horizontal Axis Gain Control
While adjustable zones compensate for
detection losses caused by metal in floors
or ceilings. A different solution is needed to
counteract distortion caused by metal posi-
tioned near the side of a detector. When
a detector is operated in proximity to a ver-
tical metal object, such as a steel girder,
deterioration in detection uniformity occurs
across the horizontal axis of the archway.
In situations where a detector cannot be
positioned away from the offending metal,
Horizontal Axis Gain Control (HAGC)
may permit detection uniformity to be
restored. Ranger’s new generation of
detectors all include HAGC as a standard
feature.
Intelliscan Executive
The Intelliscan Executive, shown on
previous page, is a customized version
of the Intelliscan Eighteen-Zone and is
handcrafted to resemble furniture. It is
constructed from quality wood and
blends into elegant surroundings.
Woods can be selected to match a
customers decor.
INTELLISCAN
Pinpoints exact
location of weapons
Compensates for
detection losses
caused by re-bar
Eliminates the need
to empty pockets of
normal quantities
of keys and coins,
etc.
Affordably priced
for all security
applications
Powerful Detection
Enhancement option
Detection Enhancement Option
Detection Enhancement is
designed for sophisticated users
that wish to design and optimize
their own detection programs. It
allows customized detection pro-
files to be created for advanced
weapon and asset protection
applications.
The design procedure is imple-
mented using Intelliscan's micro-
processor. A program called
Identiscananalyzes metal objects
that are passed through the
detector. It generates a charac-
teristic signature for each object.
Once a signature has been creat-
ed for an object, its detection
response can be precisely manip-
ulated. Difficult to detect ferrous,
non-ferrous, stainless steel or
composite objects can be specifi-
cally targeted.
(16 paginas)
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