用于结构健康监测的实时DSP数据采集及小波分析模块  

Real-Time Data Sample and Wavelet Analysis System Based on DSP Implementation for Structure Health Monitoring

作　　者：赵霞[1] 袁慎芳[1] 王帮峰[1] 

机构地区：[1]南京航空航天大学智能材料与结构研究所,江苏南京210016

出　　处：《测控技术》2003年第4期16-20,共5页Measurement & Control Technology

摘　　要：基于TI公司生产的DSP系列中的TMS32 0VC5 40 2主频较高的特点 ,采用采样速率 4 0 0kHz的AD786 5 ,辅助CPLD ,成功实现了对复合材料引出的传感信号的数据采集 ,并进行实时小波处理的功能。该模板设计的成功对复合材料的结构健康监控的系统集成具有重要的意义。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.A wavelet analysis module based on DSP implementation is developed for active composite health monitoring system to make the wavelet analysis system much more small and portable.The implementation of MALLAT algorithm with DSP system for wavelet analysis is discussed in detail. The DSP system is composed of TMS320VC5402 chip,AD 7865 with 400kHz sample rating and clock circuit, etc.The monitored structural signal can be sent directly into the DSP system. Wavelet analysis of the input signal can be done in the module to extract the feature of structure damage.

关 键 词：数据采集 小波分析 小波函数 DSP 模块 结构健康监测 复合材料 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置] TB33[自动化与计算机技术—控制科学与工程]