Development of Underground Perimeter Intrusion Detection System

Abstract

An underground passive perimeter intrusion detection system
employing minimal electric charge detection methodology has been
developed and applied in the practical field. Existing technologies for
perimeter intrusion detection systems primarily utilize active sensor
types. The passive system offers several advantages, notably its
immunity to electromagnetic fields since no current flows through the
sensor cable, and it is considered an environmentally friendly
technology. A fixed-length sensor cable is buried underground within
designated security zones. A shielded telecommunication cable can be
employed to detect the minimal charges generated by external
intrusions. When the underground-buried sensor cable experiences
deformation due to external forces and impacts, friction arises between
the cable sheath and the inner copper conductor, leading to the
generation of triboelectricity. The developed charge-sensitive analog
device incorporates specialized hardware techniques for the detection,
amplification, and processing of minimal charges. The digital module
SCM employs software algorithms to assess and trigger alarms based
on the system's sensitivity level. The proposed system demonstrates a
dependable intrusion detection rate of approximately 96% to 97%
when taking into account all installation and environmental factors.