Microphonic detection is a cost effective fence disturbance detection system, suiting new or existing fences. This system suits standard Galvanised Chain-mesh, Palisade, Barbed wire and welded mesh fences. Microphonics detects climbing, cutting and lifting of fence mesh to crawl under. Microphonics can be attached to fences as a stand-alone detection system or can be installed as a single element in an overall Perimeter defense system.

Microphonics principles are simple. Microphonic sensor cable is physically attached to fences in zones of up to 300 metres. Fence disturbance causes small amounts of vibration. Vibration causes the transducer cable to produce small electrical signals.

Zone cables connect to Signal processors. Signal processing units digitally apply intelligent adaptive algorithms, fine tuning readings, profiling your fence for environmental and climatic conditions. Application of algorithms, to your fence behavior profile allows the vibration induced signals to provide reliable, disturbance specific outputs.

Sensitivity is an adjustable parameter based on your risk/false alarm tolerance. Detection rate for a properly commissioned system is around 95% for unaided climbing attempts with a 95% output accuracy.

Correctly designed and Installed systems will be tolerant to climatic conditions including rain, snow, hail, fog, wind. Sensing will be tolerant to motion of nearby objects (vehicles, etc.), motion of surface or underground water, vegetation up to 30 cm (1 ft.) high, sand storms or Seismic vibration. Microphonic detection is unaffected by radio-frequencies, electro-magnetic interference and acoustic or magnetic effects.

As with many areas of security installation, quality of installation and equipment vary substantially. Innovative Controls recommend the following specification detail as minimums.