A Novel Multiple-Electrodes Excitation Method for Electrical Capacitance Tomography System

摘要：

Aiming at the non-uniformity problem of sensitivity distribution caused by the soft field effect of the static electric field in the measurement region of capacitance sensor, on the basis of deeply analyzing the capacitance measuring principle in electrical capacitance tomography system, an triple electrodes excitation and double electrodes examine method is proposed. By using the new method, a more uniform electric field can be got, and the independent measurement data is also increased, which improves the ill-posed of the problems, enhances the uniformity of capacitance sensitivity. The electromagnetic properties of the sensor are simulated by utilizing the ANSYS and MATLAB software. The experiment and calculation results show that the difficulty of measurement circuit is reduced, the uniformity of capacitance sensitivity is improved greatly with triple electrodes excitation and double electrodes examine method compared with singe electrode excitation method, and the quality of the reconstructed image is also improved.

关键词： Electrical Capacitance Tomography Triple Electrodes excitation Sensitivity distribution Capacitance sensor

作者: Li Lanying Gao Ming Chen Deyun

作者单位: School of Computer Science and Technology,Harbin University of Science and Technology ,Harbin China School of Computer Science and Technology,Harbin University of Science and Technology ,Harbin China

会议类型: 国际会议

会议名称: The 6th International Forum on Strategic Technology(IFOST 2011)(第六届国际战略技术论坛)

会议地点: 哈尔滨

会议语种:英文

页码: 1167-1171

在线出版日期: 2011-08-22（万方平台首次上网日期，不代表论文的发表时间）