Patent ID: 8514076

Claim:
A security system for detecting an unauthorized activity and attempt to enter through an entrance of a secured area comprising: an entrance barrier for controlling entry through the entrance including a plurality of intersecting structural tubular elements; a first fiber optic intrusion sensor including at least one fiber optic sensor line for sensing a first predetermined fault condition signifying an unauthorized attempt to open the barrier; a second fiber optic intrusion sensor including at least one fiber optic sensor line for sensing a second predetermined fault condition signifying one of a bend or a severance of a tubular element; at least one fiber optic scanning unit for scanning the optical sensor line and receiving reflected scan signals from the optical sensor line; a system computer for receiving and processing the scan signals from said scanning unit in real-time representing the state of the optical sensor lines and generating a real-time fault signal in response to detecting one of said first and second predetermined fault conditions; and a communication device communicating notice of the fault signal to security personnel.