scholarly journals Pipe leak diagnostic using high frequency piezoelectric pressure sensor and automatic selection of intrinsic mode function

2017 ◽  
Vol 257 ◽  
pp. 012091 ◽  
Author(s):  
Hanafi M Yusop ◽  
M F Ghazali ◽  
M.F.M. Yusof ◽  
M.A Pi Remli ◽  
M H Kamarulzaman
Keyword(s):  
Pressure Sensor ◽  
High Frequency ◽  
Intrinsic Mode Function ◽  
Mode Function ◽  
Automatic Selection ◽  
Piezoelectric Pressure Sensor ◽  
Selection Of

scholarly journals Fault Identification in Pipeline System Using Normalized Hilbert Huang Transform and Automatic Selection of Intrinsic Mode Function

2018 ◽  
Vol 221 ◽  
pp. 02002 ◽  
Author(s):  
Hanafi M. Yusop ◽  
M.F. Ghazali ◽  
M.F.M. Yusof ◽  
M.A.Pi Remli ◽  
M. Samykano
Keyword(s):  
Distribution Systems ◽  
Water Pressure ◽  
Intrinsic Mode Function ◽  
Transient Signal ◽  
Pipeline System ◽  
Pressure Transient ◽  
Hilbert Huang Transform ◽  
Mode Function ◽  
Automatic Selection ◽  
Selection Of

Pressure transient analysis has been widely used to monitor the condition of pipelines and its assessment in water distribution systems. This is a low-cost nonintrusive technique with the ability to locate uncertainties (leak, pipe fitting, blockage) at a greater distance from the measurement point. In this research, Normalised Hilbert Huang Transform (NHHT) is used as the method to analyse the pressure transient signal. However, this method has difficulty in selecting the suitable intrinsic mode function (IMF) for the advance data analysing. As an alternative, Integrated Kurtosis-based Algorithm for z-filter Technique (Ikaz), which allows automatic selection of intrinsic mode function (IMF) been used to substitute the NHHT limitation in this study. The analysis is conducted on a 67.9-meter Medium High-Density PolyEthylene (MDPE) pipe installed with single artificial leak simulator at a water pressure in the range of 1-4 bar.

scholarly journals Research on material selection of force-sensitive element for high-frequency dynamic piezoelectric pressure sensor

2022 ◽  
Vol 355 ◽  
pp. 01026
Author(s):  
Sikang Cai ◽  
Guicong Wang ◽  
Yingjun Li ◽  
Xiaoqi Yang
Keyword(s):  
Pressure Sensor ◽  
High Frequency ◽  
Sensitive Element ◽  
Material Selection ◽  
Coupling Effect ◽  
Dynamic Performance ◽  
Pressure Sensors ◽  
Great Sensitivity ◽  
Sensing Element ◽  
Piezoelectric Pressure Sensor

The high-frequency dynamic piezoelectric pressure sensor has the advantages of simple structure, long service life, high natural frequency, excellent signal-to-noise ratio and great sensitivity. It is appropriate for measuring high dynamic, dynamic or quasi-static pressure changes and pressure fluctuations. And this kind of sensor is widely utilized in the shock wave testing. The force-sensitive element is one of the main factors affecting the static and dynamic performance of piezoelectric pressure sensors. Basing on the piezoelectric equation and coupling effect between mechanics and electricity, in this paper, the finite element model of the high-frequency dynamic piezoelectric pressure sensor is established. The influences of the force-sensing element on the sensitivity of the sensor are analysed. Referential suggestions for choosing force-sensitive element of high-frequency dynamic piezoelectric pressure sensor are provided.

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