Title :
Experimental study of phase sensitive detection technique in ECT system
Author :
Xiaochen Ren ; Shi Liu
Author_Institution :
Sch. Of Control & Comput. Eng., North China Electr. Power Univ., Beijing, China
Abstract :
Electrical capacitance tomography (ECT) techniques have been developed to visualize industrial processes with dielectric materials. Phase sensitive demodulation is a key part of ECT system to improve speed and accuracy. Methods of demodulation are demonstrated in this paper, including analogue and digital methods. The problems about applying digital quadrature demodulation in ECT were simulated by SIMULINK. Validation shows that the digital phase sensitive demodulation is complete enough to meet the requirements of ECT system in accuracy and speed.
Keywords :
capacitance measurement; demodulation; dielectric materials; electric impedance imaging; phase measurement; phase modulation; ECT system; SIMULINK simulation; analogue method; dielectric material; digital method; digital phase sensitive demodulation; digital quadrature demodulation; electrical capacitance tomography technique; industrial processing; phase sensitive detection technique; Abstracts; ECT; Phase sensitive demodulation; Quadrature demodulation; SIMULINK;
Conference_Titel :
Machine Learning and Cybernetics (ICMLC), 2014 International Conference on
Conference_Location :
Lanzhou
Print_ISBN :
978-1-4799-4216-9
DOI :
10.1109/ICMLC.2014.7009103
