Title :
Time-domain analysis and research on blasting vibration signals based on Fourier transform
Author_Institution :
Xiangfan Vocational & Tech. Coll., Xiangyang, China
Abstract :
The blasting earthquake waves characteristics is studied by the Fourier transform in this paper, the energy distribution of blasting vibration signals with short-time and non-stationary characteristics is analyzed by short-time Fourier transform. According to time-frequency properties of Fourier transform, the blasting vibration time signal is scanned with stratified reconstruction signal, the relative energy distribution of blasting vibration and time variation law of the vibration intensity with different frequencies are obtaapined by these signals. The measured results of blasting vibration signal show that the analysis of energy distribution characteristics based on Fourier transform can accurately gives the information of blasting vibration signal. The results provide much more feasible and efficient way of analyzing the structural security of blasting vibration.
Keywords :
Fourier transforms; detonation waves; mechanical engineering computing; signal reconstruction; time-domain analysis; vibrations; Fourier transforms; blasting earthquake waves; blasting vibration signals; energy distribution; signal reconstruction; time domain analysis; Continuous wavelet transforms; Discrete wavelet transforms; Time frequency analysis; Vibrations; Wavelet analysis; Characteristic analysis; Energy distribution; Fourier Transform; Short-time instability; Time-frequency characteristics;
Conference_Titel :
Electronic and Mechanical Engineering and Information Technology (EMEIT), 2011 International Conference on
Conference_Location :
Harbin, Heilongjiang, China
Print_ISBN :
978-1-61284-087-1
DOI :
10.1109/EMEIT.2011.6022920
