DocumentCode :
2203805
Title :
Development of a high-speed capacitive surface sensor for fluid distribution imaging
Author :
Thiele, Sebastian ; Da Silva, Marco Jose ; Hampel, Uwe
Author_Institution :
Inst. of Safety Res., Dresden
fYear :
2007
fDate :
28-31 Oct. 2007
Firstpage :
236
Lastpage :
239
Abstract :
Experimental investigation of multiphase flows plays an important role in many research and industrial application areas, such as chemical and petroleum industry and nuclear engineering. We introduce a novel surface sensor based on electrical capacitance (permittivity) measurements to visualize flows along the surface of objects. The prototype sensor is formed by a 32times32 pixel interdigital sensing structure and can be mounted onto the wall of pipes or vessels and thus has a minimal influence on the flow. An associated electronics measures the capacitance of the fluid on each sensing structure in a multiplexed manner. This way, images of the fluid distribution can be achieved directly without the need for any reconstruction procedure. Images at up to 10,000 frames per second can be obtained. The system was evaluated showing good reproducibility and accuracy. Initial results of a two-component mixing experiment are presented.
Keywords :
capacitance measurement; capacitive sensors; flow sensors; flow visualisation; multiphase flow; permittivity measurement; electrical capacitance measurement; flow visualization; fluid distribution imaging; high-speed capacitive surface sensor; interdigital sensing structure; multiphase flows; permittivity measurement; Capacitance measurement; Capacitive sensors; Chemical engineering; Chemical industry; Chemical sensors; Design engineering; Electric variables measurement; Image sensors; Permittivity measurement; Petroleum industry;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sensors, 2007 IEEE
Conference_Location :
Atlanta, GA
ISSN :
1930-0395
Print_ISBN :
978-1-4244-1261-7
Electronic_ISBN :
1930-0395
Type :
conf
DOI :
10.1109/ICSENS.2007.4388380
Filename :
4388380
Link To Document :
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