Design And Implementation Of The Algorithm For The Intrusion Detection System Based On Seismic Sensor Network

Seismic sensor was less affected by external environmental factors and have higher detection sensitivity compared to the other types of sensors such as infrared sensor, magnetic sensors, thermal sensor. And the seismic sensor array can identify target signals intelligently. The seismic sensor web intrusion detection system use the seismic sensors as the main node, It combine the sensor network technology, intrusion detection technology, embedded technology and virtual instrument technology and have obvious advantages. It can be implement real-time survey about the objective behavior around the protected enclosure-wall. Alarm the intrusion signals and exclusion non-intrusion signals. The early intrusion detection system have large limitations about the results of judge warning. It can judge there have intrusion objective or not, but it can not identify objective behavior. The seismic sensor web intrusion detection system is out of these technology limitations, and It can provide a more stable protection.This paper introduces the principle of seismic signal generation, signal the type of ground motion and seismic signal characteristics; then introduced to the type of vibration sensor and principle; The data acquisition system is substitute for the NI_DAQ card, it designed for the cost of TI company's data acquisition card was too expensive. System hardware circuit board based on LPC2378 processor and software compiled by LABVIEW8.5, realized serial portable data acquire with eight channel The collected data through the signal sent to the PC RS232 serial port receive buffer, the system can be collected vibration signal filtering, preprocessing, storage and other processing; in the acquisition of signals based on the study of the time domain and frequency domain signal feature extraction method, combined with intrusion prevention system requirements, analyze the signal characteristics and design of the system algorithm; in the analysis algorithm MATLAB simulation results, the algorithm is ported to ARM in real-time monitoring.At the end of the article,we analysis the database monitoring results of the analysis of issues arising, propose solutions to problems can be studied in several directions.