The latest developments of electrical tomography in China

Huxiang Wang1, Lihui Peng2, Baoliang Wang3, Shi Liu4 and Wuqiang Yang5

1. School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China

2. Department of Automation, Tsinghua University, Beijing 100084, China

3. Department of Control Science and Engineering, Zhejiang University, Hangzhou, 310058, China

4. School of Energy and Power Engineering, North China Electric Power University, Beijing 102206, China

5. School of Electrical and Electronic Engineering, The University of Manchester, Sackville Street, Manchester M60 1QD, UK

ABSTRACT

Supported by Natural Science Foundation of China (NSFC), a team of researchers from five organisations has worked on electrical tomography (ET) since 2006. This paper presents the latest development of ET by them, which have been achieved in hardware, image reconstruction algorithms and applications. A new digital ET system has been developed, with the data acquisition rate up to 1000 frames per second. Dual­modality ECT/ERT has been investigated for measurement of gas­oil­ water flows. New image reconstruction algorithms with good stability, fast speed and high accuracy have been developed. Some flow parameters, such as void fraction, and flow regime identification, are also investigated.

Keywords Electrical tomography, digital system, image reconstruction