Module Design Based On Dsp Technology Of Composite Materials In Real Time Wavelet Analysis

Structural health monitoring system is an important research direction in the hot area of smart material and structure and wavelet analysis method is demonstrated to be a promising method to extract the features of structural damage. In this paper, a wavelet analysis module based on DSP implementation was developed for active composite health monitoring system to make the wavelet analysis system much more smaller and portable. The implementation of MALLAT algorithm with DSP system for wavelet analysis was discussed in detail. The DSP system is composed of TMS320vc5402 chip, AD 7865 with 400k sample rating and clock circuit, etc. The signal from the material is sent into the DSP system , then the decomposed signals are shown on the screen. In the future work through comparing the detail signal from damage specimen with the signal from healthy specimen , the damage signature can be extracted.