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  • Access Control
  • Biometric RFID
  • CCTV
  • Integrated systems
  • Intruder Alarms
  • Perimeter security

CPS Plus

Microphonic Cable Perimeter System

System Description The CPS Plus is a passive, perimeter intruder detection system, suitable for both internal and external applications.

It is normally used on existing, external fences such as chain link and welded mesh. It can also be used on top of, or in the structure of walls (wood, brick, stone etc.). Designed to detect all the typical intrusion attempts of cutting the fence, pulling or lifting the fence or climbing over and, in the case of internal applications, penetration of the wall, the system is used as the primary means of detection in applications of medium to high risk. When used with a secondary system (such as CCTV surveillance equipment) it can be used for the highest risk applications.

Operating Principles
The operation of the CPS Plus system is based on detecting, with a Microphonic cable, all of the typical mechanical disturbances produced during an attempted intrusion.

The Microphonic Cable is installed along the perimeter fence of the area to be protected. The particular characteristics make it especially sensitive to the mechanical disturbances produced in the course of an attempt to violate the protection (cutting, climbing pulling etc.); this disturbance is translated into an electric, signal by a piezoelectric effect, which is continuously processed by the analyser.

To conform to the perimeter layout and the level of sensitivity required the installation of the cable can assume many different configurations, but in each case no more than 300 metres of cable per zone can be used.

Using FFT (Fast Fourier Transform) time and frequency domain analysis the system breaks all the signals down into a number of discrete frequency groups. Attack signals and interference signals have different frequency distributions and by using a unique auto-setup feature the system can be configured to discriminate between genuine attacks and signals caused by sources of interference, such as wind and rain.

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