Aritech VV600, Планирование и руководство по установке

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Planning and Installation manual VV600/VV602Plus 4
1.2. Function
The detection principle is based on the structural vibrations generated in walls,
floors, ceilings and doors upon an attempt to break through such physical barriers.
The Aritech VV600Plus System features a high level of discrimination between real
attacks and normal background noise generated by human activities, effectively
reducing the level of unwanted alarms to almost zero.
To achieve this, three important parameters are analysed before an alarm is
triggered:
•
signal strength (amplitude)
•
signal frequency
•
signal duration
These parameters are very different between real attacks and "normal" background
vibrations. In general, one may describe the signal characteristics of a true break-in
attempt as per below:
Explosive means generate a signal with a very high amplitude and a short
duration.
Mechanical destruction generates signals with a moderate to high amplitude and
a long signal duration .
Rotating devices generate signals with a moderate to high amplitude and a long
signal
duration
.
Thermal devices generate signals with low amplitude and a long signal duration .
In the "Functional description", therefore, you will find that different analysing
channels deal with different types of signals in the Aritech VV600Plus System.
The application of surface mount technology in the actual sensor device itself, has
enabled the incorporation of complex circuits in a small housing, thus providing
unobtrusive, aesthetically pleasing detectors without operational trade-offs.
1.3. Detecting and Testing
The Aritech VV600Plus System consists of two main system functions which in
close co-operation guarantee an extremely high security level:
•
the detecting function
•
the testing function
1.3.1. The detection function
The core of the Aritech VV600Plus System is the vibration detectors VV600Plus
and VV602Plus. Each VV600/602Plus seismic detector is a fully equipped vibration
detector. This means that all necessary processing electronics is incorporated
within each VV600/602Plus unit. Each such unit is ready to co-operate with almost
any control panel presently available. No intermediate signal processing is
necessary, no vulnerable slave microphones are used. The VV600Plus utilises the
most advanced microelectronic processing circuits to reduce the risk of false
alarms while maintaining the highest detection level. The unique counting channel
that is featured on the VV600Plus allow higher sensitivity settings on safe and
document cabinets without generating nuisance alarms from ambient noise. It will
also detect attacks with hammers, sledgehammers, crowbars and hydraulic jacks
at a very early stage.The VV602Plus model is used to protect night deposit safes
and automatic teller machines (ATM’s). The counting channel has been omitted in