A comparative study on QDCT-based and QDFT-based methods for multichannel vibration signals compression

Author

Jia, Tong

Author_Institution

Coll. of Electro-Mech. Eng., Jiaxing Univ., Jiaxing, China

fYear

2011

fDate

16-18 April 2011

Firstpage

1

Lastpage

4

Abstract

This paper had studied two methods for multichannel vibration signals compression, which were QDCT-based and QDFT-based method. In the experiment, the three signals data correspondent to orthogonal axes X, Y, Z were gotten by an acceleration sensor with three channels. The two methods could compress the multichannel vibration signal effectively, and also preserve the association for the signals of each channel, eliminate the noise and redundancy, extract the key features. The experiment results indicated its efficiency, and the comparative results indicated that the QDCT-based method was better than that of QDFT. Moreover that it provided a new method for multichannel signals to data compression and feature extraction.

Keywords

data compression; discrete Fourier transforms; discrete cosine transforms; vibrations; QDCT-based method; QDFT-based method; acceleration sensor; data compression; feature extraction; multichannel vibration signal compression; Acceleration; Correlation; Feature extraction; Image coding; Quaternions; Redundancy; Vibrations; data expression; multichannel vibration signals; quaternion-dct; quaternion-dft;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on

Conference_Location

XianNing

Print_ISBN

978-1-61284-458-9

Type

conf

DOI

10.1109/CECNET.2011.5768488

Filename

5768488