Digital correlation method was used to extract phase information as the phase information of eddy current testing signals could reflect the characteristics of detecting system.
涡流检测信号中的相位信息能反映检测系统的某些特性,讨论用数字相关法提取相位特征信息。
2
In the digital image performance testingsystem of CMOS camera, defect detection is crucial.
在CMOS摄像头数字图像性能检测系统中,疵点检测是关键内容。
3
On-line testing shows that, this digital ultrasonic peening power supply based on DSP can make the system work at the resonance state, and the peening process is stable.