Title:
SIGNAL PROCESSING METHOD AND SYSTEM BASED ON TIME-OF-FLIGHT MASS SPECTROMETRY AND ELETRONIC APPARATUS
Document Type and Number:
WIPO Patent Application WO/2018/003465
Kind Code:
A1
Abstract:
The present invention provides a signal processing method, a signal processing system and an electronic apparatus for analysis of time- of-flight mass spectra. The method comprises: (a) digitalizing an analog signal output from an ion detector to acquire a plurality of complete raw time-of-flight spectra or acquiring each effective part in a plurality of raw time-of-flight spectra for a plurality of times; (b) if complete raw time-of-flight spectra are acquired in step (a), extracting the effective parts of each raw time-of-flight spectra; (c) applying a continuous wavelet transform to each effective part of each raw time-of-flight spectrum to map to each frequency band or scale; (d) determining the positions and intensities of each spectral peak in each raw time-of-flight spectrum by detecting the maxima of an obtained two-dimensional wavelet coefficient distribution, and saving said peak position and intensity as the characteristic data of each spectral peak; (e) accumulating the characteristic data of said spectral peaks obtained by processing each of the raw time-of-flight spectra and stacking the data to form a spectral peak intensity/ time- of-flight histogram.
Inventors:
SHEN JIAQI (CN)
SUN WENJIAN (CN)
ZHANG XIAOQIANG (CN)
SUN WENJIAN (CN)
ZHANG XIAOQIANG (CN)
Application Number:
PCT/JP2017/021578
Publication Date:
January 04, 2018
Filing Date:
June 12, 2017
Export Citation:
Assignee:
SHIMADZU CORP (JP)
International Classes:
H01J49/00; G06F17/14; H01J49/40
Foreign References:
| US20120126110A1 | 2012-05-24 | |||
| US6870156B2 | 2005-03-22 | |||
| US8063358B2 | 2011-11-22 |
Other References:
P. DU ET AL: "Improved peak detection in mass spectrum by incorporating continuous wavelet transform-based pattern matching", BIOINFORMATICS., vol. 22, no. 17, 4 July 2006 (2006-07-04), GB, pages 2059 - 2065, XP055259624, ISSN: 1367-4803, DOI: 10.1093/bioinformatics/btl355
Attorney, Agent or Firm:
KYOTO INTERNATIONAL PATENT LAW OFFICE (JP)
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