基于DSP的大电机线圈内部缺陷无损检测系统

Automatic Non Destructive Testing System of Pole Coil's Internal Defect in Large-scale Motor Based on DSP

在电机制造厂的大型电机线圈绝缘体发空的检测中,采用的是人工的"听声法",人为因素较多。文中根据大型电机无内部缺陷线圈与有内部缺陷线圈声学特性的差异,设计出一种基于TMS320F2812 DSP的大型电机线圈无损检测系统。该系统包括了敲击系统、信号检测系统和DSP系统。通过对所设计的硬件电路进行模拟仿真和局部硬件测试,完成了硬件平台的开发,并开发了相应的应用软件,使系统基本上能实现线圈的内部缺陷在线无损检测。

The empty voice detection of large-scale motor＇s pole coil in motormaker adopted artificial listening methods, which has many human factors. According to the acoustic characteristics differences in large-scale motor between non internal defects and internal defects pole coil, the paper designed a NDT （non destructive testing） system of pole coil in large-scale motor based on TMS320F2812 DSP. The system included knocking system ,signal acquisition system and DSP system. Through analog simulation and local hardware test to hardware circuit, the paper finished hardware platform development and application software, which realized on-line NDT of pole coil＇s internal defect.