Sequential state logic for pneumatic valve monitoring using piezo film sensors

This paper presents an approach to monitor actuation events of pneumatic valves using piezo film sensors. These sensors are very low-cost, flexible, wide-band, and are ideally suited to acquire acoustic signals non-intrusively from the valve. Event-specific signal signatures based on the envelope of the sensor signals are used to determine the behavior of the valves under operation. A sequential state logic is developed to detect the signatures for normal valve events. All design considerations are derived from experimental data obtained from a laboratory testbed. The performance results, including analysis of signals at various stages of the algorithm are presented using MATLAB.

[1]  D. W. Prine,et al.  Application of acoustic leak detection technology for the detection and location of leaks in light water reactors , 1988 .

[2]  Y. H. J. Au,et al.  Acoustic Emission Signal Processing , 2001 .

[3]  Fulei Chu,et al.  Application of the wavelet transform in machine condition monitoring and fault diagnostics: a review with bibliography , 2004 .

[4]  Viggo Henriksen,et al.  Spectral analysis of internally leaking shut-down valves , 2011 .

[5]  H. D. Haynes.  Evaluation of check valve monitoring methods , 1992 .

[6]  Diego Andina,et al.  Application of Neural Networks , 2007 .

[7]  Graham Thompson,et al.  An experimental investigation into the detection of internal leakage of gases through valves by vibration analysis , 1997 .

[8]  Mohamed F. Younis,et al.  A sensor network for non-intrusive and efficient leak detection in long pipelines , 2011, 2011 IFIP Wireless Days (WD).

[9]  D. T. Kaplan,et al.  Fetal ECG extraction with nonlinear state-space projections , 1998, IEEE Transactions on Biomedical Engineering.

[10]  Joon Lyou,et al.  Condition Monitoring of Check Valve Using Neural Network , 2005 .

[11]  Yang Heng-hu,et al.  Nondestructive Detection of Valves Using Acoustic Emission Technique , 2015 .

[12]  L. P. Gradin,et al.  Reducing operations and maintenance costs by prudent commercial grade item dedication , 1994, Proceedings of 1994 IEEE Nuclear Science Symposium - NSS'94.

[13]  E. W. McAllister.  Pipeline rules of thumb handbook : quick and accurate solutions to your everyday pipeline problems , 2005 .