Study on Moving Bodies Identification Algorithm Based on Piezoelectric Cable Vibration Signals

Abstract

With regard to the identifying process of moving bodies identification device based on piezoelectric cable, this thesis proposes its matched algorithm. This algorithm mainly solves the problem of identifying moving bodies with piezoelectric signal of piezoelectric cable. As is demonstrated by experiments towards human, bicycle and creeper truck, this method can make quick and accurate identification of the three kinds of moving bodies. The security system based on piezoelectric cable is a kind of new-type security system with high concealment whose core content is to study the identification problems of piezoelectric cable vibration signal. Through the analysis of a large number of measured signals, a kind of analysis and processing algorithm of moving bodies vibration signal is designed adopting wavelet packet analysis theory and local peaking extraction method. Through the analysis of movement mechanism towards the different moving bodies such as human, bicycle and creeper truck, the waveform feature is provided and the accurate identification of moving bodies is achieved. The research on moving bodies identification device based on piezoelectric cable is still at primary stage both at home and abroad. At present, there are advanced intrusion detection devices based on fiber perimeter intrusion detection security system [1], but they can only detect whether there are moving bodies intrusion or not without the ability to identify the moving bodies. The algorithm of the present design can analyze and process the vibration signals and achieve moving bodies identification.