Title :
Dynamic performance improvement of ERT system [electrical resistance tomography]
Author :
Wenhui, Wang ; Feng, Dong ; Yanbin, Xu ; Junwen, Liu
Author_Institution :
Dept. of Autom., Tianjin Univ., China
Abstract :
Electrical resistance tomography (ERT) is the embranchment of process tomography (PT). In this paper, the bottleneck of system real-time performance is analysed. The dynamic performance of the system can be improved by increasing the signal frequency, placing the band pass filter (BPF) parallel and replacing the low pass filter (LPF) used to obtain the amplitude information by a digital measurement method. Based on these analyses, an improved ERT system is designed, and a method of peak value measurement used to obtain the amplitude of the measurement signal is put forward.
Keywords :
band-pass filters; electric admittance measurement; electric impedance imaging; electric resistance measurement; peak detectors; tomography; ERT system dynamic performance improvement; ERT system real-time performance; band pass filter; conductance distribution; digital measurement method; electrical resistance tomography; peak value measurement; process tomography; Band pass filters; Design methodology; Electric resistance; Frequency measurement; Low pass filters; Performance analysis; Real time systems; Signal analysis; Signal design; Tomography;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351336