Commercial/industrial buried security system having sound/vibration probes and spring activated buried system released upwards setting high voltage fibres preventing movement and raising alarm.

摘要

The buried security system has sound (12) and vibration probes (15) which set off a system buried underground (10). The system has a set of springs (1) which release the system upwards around the protection perimeter. Buried in the area are thirty two spider arranged fibres which make outer electrical contacts (9) with the raised unit, and produce a neutralising voltage which stops person movement. The security services are also alerted.