Application of MAX 262 Programmable Filters in Ultrasonic Guided Waves Detection
A signal processing electric circuit used in ultrasonic guided waves nondestructive testing has been designed, which contains the pre-amplifier, the single chip stc89c52 and the microprocessor programmable MAX262 and so on. Its feasibility test is carried out. The center frequency and other parameters are input into the computer by VC software programmed, and the computer sends these instructions to the single chip. The single chip controls MAX262 filter to work regularly and the noise signals are well filtered. The signals output from the data sampler are analyzed and processed, and the defect echo signals can be clearly recognized. The experimental results show that the designed signal processing electric circuit is feasible and its effect of application is good.
MAX262 chip Ultrasonic guided wave Band pass filter Programmable Multi-frequency filter
Zeng F. Zhu S.J Wang Y.M. Shen L.H. Shen C.J.
College of Ship and Power; Naval University of Engineering;NO.717, Jiefang Road, Wuhan 430033 China
国际会议
第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)
重庆
英文
1184-1186
2009-08-01（万方平台首次上网日期，不代表论文的发表时间）