CAJ | 학술논문

针对声发射检测技术的相关理论，基于 VC ＋＋与 PCI-2数据采集卡，设计了一套声发射信号采集、分析与处理系统，介绍了硬件和软件结构。该系统实现了数据采集、处理、显示及存储等功能，并能通过强大的 Matlab接口对信号进行频谱分析。同时，提取了信号的幅值等20多种参数，并重点对振铃计数集质心频率等特征参数进行数据分析。最后，在实验室条件下分别用断铅信号和标准信号进行测试，验证了系统的可靠性。
침대성발사검측기술적상관이론，기우 VC ＋＋여 PCI-2수거채집잡，설계료일투성발사신호채집、분석여처리계통，개소료경건화연건결구。해계통실현료수거채집、처리、현시급존저등공능，병능통과강대적 Matlab접구대신호진행빈보분석。동시，제취료신호적폭치등20다충삼수，병중점대진령계수집질심빈솔등특정삼수진행수거분석。최후，재실험실조건하분별용단연신호화표준신호진행측시，험증료계통적가고성。
According to related theories of acoustic emission detection technology and basing on VC ++and PCI-2 data acquisition card,the system for acoustic emission signal collection,analysis and processing was de-signed,including the system hardware and software.The system can realize the function like data acquisition, processing,display and preservation,implement signal spectrum analysis through the powerful Matlab inter-face,extraction of 20-odd parameters like signal amplitude,as well as the data analysis of the characteristic pa-rameters like ring count and centroid frequency.The laboratory testing with pencil lead break and standard sig-nal proves the system reliability.