On-chip Data Compression Scheme for Lung EIT Signal Acquisition and Recovery

  • Boxiao Liu
  • , Chun Huat Heng
  • , Guoxing Wang
  • , Yong Lian

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

An on-chip data compression scheme, suitable for electrical impedance tomography signal acquisition and recovery is proposed. For typical 16 electrode lung electrical impedance tomography system, 13 channel high frequency signals are acquired and I/Q demodulated to different frequencies. Frequency division signals are summed up and sampled by only two delta sigma modulators with high resolution. Thus 84.6% reduction of ADC usage is achieved, and the output data is repacked with compression ratio of 9.75. After decimation, each I/Q signal is recovered with 10-bit resolution by applying Blackman window corrected fast Fourier transformation algorithm.

Original languageEnglish
Title of host publication2018 IEEE 23rd International Conference on Digital Signal Processing, DSP 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538668115
DOIs
StatePublished - 2 Jul 2018
Externally publishedYes
Event23rd IEEE International Conference on Digital Signal Processing, DSP 2018 - Shanghai, China
Duration: 19 Nov 201821 Nov 2018

Publication series

NameInternational Conference on Digital Signal Processing, DSP
Volume2018-November

Conference

Conference23rd IEEE International Conference on Digital Signal Processing, DSP 2018
Country/TerritoryChina
CityShanghai
Period19/11/1821/11/18

Keywords

  • Blackman window
  • Electrical impedance tomography
  • fast Fourier transformation
  • frequency division
  • on-chip data compression

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