Design and Implementation of Valve Failure Signal Multi-Channel Acquisition System Based on Acoustic Emission and Pipeline

Abstract:

Designed and implemented acoustic emission signal acquisition system core with microprocessor STM32F103RB. Acquisition system included high sensitivity acoustic emission sensors: PXR20; signal conditioning for acoustic emission, used high-speed ADC AD9225 for A/D conversion; used FIFO module for data buffer; used USB to serial port technology for data communications and transmissions. Central control unit design included gain control of amplifier circuit, clock control of external AD-chip and data cache chip, data acquisition port control, data output port control. Experimental results show that the system implements a multi-channel, parallel, high-precision acquisition and transmission for acoustic emission data.

• Periodical: Advanced Materials Research (Volume 460)
• Pages: 281-285
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.460.281
• Online since: February 2012
• Authors: Ting Feng, Jian De Wu, Xu Yi Yuan, Yu Gang Fan, Xiao Dong Wang
• Keywords: Acoustic Emission (AE), Multi-Channel Acquisition, Valve Failure

References

[1] LIU Yun-fei, YIN Dong-meng. The Depression of the Noise in AE from Particleboard Based on Wavelet Analysis[J]. Journal of Nanjing Forestry University (Natural Sciences Edition), 29(6):91-94.(2005)

[2] PROAKIS John, MANOLAKIS Dimitris G.Digital signal processing (4th Ed.) [M]. Upper Saddle River: Prentice Hall, Inc. (2006)

[3] Li Zheng. Designing of Large Capacity FIFO Based on Double Ports RAM[D].Shenyang：Shenyang University of Techology. (2009)

[4] Liu Qiang. Research and Implementation on PCI-based fiber-optic acoustic emission signal acquisition system[D]. Xian：Northwestern Polytechnical University, (2006)