Simulation Study on Multi-Frequency Signal Detection in Perimeter Intrusion Detection System by Matlab

2014 ◽  
Vol 530-531 ◽  
pp. 293-296
Author(s):  
Zhi Gang Li ◽  
Ling Yun Chen ◽  
Ming Ji Wang ◽  
Yu Shuang Li
Keyword(s):  
Intrusion Detection ◽  
Signal Detection ◽  
Simulation Study ◽  
Intrusion Detection System ◽  
Detection System ◽  
Electromagnetic Disturbance ◽  
Frequency Signal ◽  
Detection Circuit ◽  
One Machine ◽  
Processing Circuit

Multi-domain perimeter intrusion detection system by one machine is based on leaky cable. To solving the problem that the multi-frequency electromagnetic disturbance signal detection circuit is complex and repeated, a method is raised, which is without processing by different frequency, sending the intrusion disturbance signal from multisport to processing circuit to perform FFT, contrasting it with signal spectra without disturbance by frequency analysis, and determining if intrusion happened, the number of intrusion case, detailed place and domain. Simulation study is performing by Matlab, which demonstrated the feasibility and advantage in the project.

scholarly journals The Impact of Temperature of the Tripping Thresholds of Intrusion Detection System Detection Circuits

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6851
Author(s):  
Jarosław Łukasiak ◽  
Adam Rosiński ◽  
Michał Wiśnios
Keyword(s):  
Intrusion Detection ◽  
Intrusion Detection System ◽  
Detection System ◽  
The State ◽  
Operating Environment ◽  
Electrical Parameters ◽  
Safety Level ◽  
Environment Temperature ◽  
Detection Circuit ◽  
The Impact

This research paper discusses issues regarding the impact of temperature on the tripping thresholds of intrusion detection system detection circuits. The objective of conducted studies was the verification of a hypothesis assuming that the variability of an intrusion detection system’s (considered as a whole) operating environment temperature can impact the electrical parameters of its detection circuits significantly enough so that it enables a change in the interpretation of the state observed within a given circuit fragment from the state of “no circuit violation” to “circuit violation”. The research covered an intrusion detection system placed in a climatic chamber with adjusted temperature (−25.1 ÷ +60.0 [°C]). The analysis of the obtained results enabled determining the relationships that allow selecting detection circuit resistor values. It is important since it increases the safety level of protected facilities through proper resistor selection, thus, correct interpretation of a detection circuit state.

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