Smart sensors pick out the dangerous sounds

Geoquip and Domain Dynamics have designed a real-time intelligent intrusion detection system which does not use closed circuit television. The Perimeter Security and Intrusion Classification system (Psicon) uses a technique called Time Encoded Signal Processing and Recognition (Tespar), developed by Domain Dynamics. The system analyses environmental sounds and vibrations from perimeter sensors to distinguish sinister […]

Geoquip and Domain Dynamics have designed a real-time intelligent intrusion detection system which does not use closed circuit television.

The Perimeter Security and Intrusion Classification system (Psicon) uses a technique called Time Encoded Signal Processing and Recognition (Tespar), developed by Domain Dynamics.

The system analyses environmental sounds and vibrations from perimeter sensors to distinguish sinister signals from other background noises.

Each Psicon-protected zone contains discreet or hidden sensors which detect vibrations and noise. The continuously monitored signals are coded by Tespar which focuses on particular elements within the signal patterns – the peaks and troughs within the signal and the intervals between them.

This compacted data can be used for simple correlation comparisons and, if more discrimination is required, can be analysed by neural networks.

In practice, the Tespar stream is correlated with stored examples of known intrusions to establish whether or not to raise an alarm.

Psicon is being manufactured and marketed by Geoquip, which claims the system is sensitive enough to detect and identify events such as an intruder climbing a wall or railings, and to distinguish these from traffic or other noises.