Design of Acoustic Testing System for Gas-Containing Sediment Based on PXI and LabVIEW
LU Xiao-sha · Journal of Zhejiang Sci-Tech University · 2014
Aiming at the problem that gas-containing sediment sample is difficult to maintain in-situ state during the test,aplatform for gas-containing sediment simulation and testing experiments is designed.LabVIEW and PXI bus are used to design multi-parameter measurement and data processing soft and hardware system.PXI module is selected to construct hardware system.Circuits for transmitting and receiving ultrasonic waves are designed.Ultrasound,temperature,pressure and displacement data are collected on the basis of LabVIEW software.After signal processing and calculation of acoustic parameters and sound velocity,the results are shown.Contrast experiments of sound velocity testing of existing sediment samples indicate the testing system has consistent testing results with RS-ST01 Cnonmetal ultrasonic tester.This shows ultrasonic measurement section of the testing system is reliable.The advantage of this testing system is that it has better expansibility and openness.