DEVELOPMENT OF A HIGH SPEED DATA ACQUISITION SYSTEM FOR ELECTRICAL CAPACITANCE TOMOGRAPHY

摘要

A new capacitance measuring circuit based on charge amplification principle for electrical capacitance tomography has been developed. The measured capacitance is only charged and discharged once and no noise is created by the measurement principle. Test results show the data acquisition time for 66 capacitance (for reconstructing one image) is 4.2ms and the time for transmitting the data is 2ms.