The invention discloses a planar
electrical capacitance tomography imaging
system and a detection method. The
electrical capacitance tomography imaging
system comprises an upper computer, a
single chip microcomputer, a
capacitance measurement circuit, a switching circuit, and an array type capacitive sensor, wherein the
single chip microcomputer is connected with the upper computer, the
capacitance measurement circuit and the switching circuit separately; the switching circuit is connected with the array type capacitive sensor and the
capacitance measurement circuit separately; the single chipmicrocomputer controls the switching circuit to perform
electrode switch on the array type capacitive sensor so as to realize
capacitive coupling between different electrodes, so that the capacitancemeasurement circuit can be used for measuring; data of the capacitance measurement circuit is transmitted to the
single chip microcomputer in a single direction, the single
chip microcomputer collects data and then is communicated with a data collection communication
system of the upper computer so as to transmit the data to a computer, then an image reconstruction system processes and reconstructs data. The
electrical capacitance tomography imaging system has a simple structure, is low in cost, and realizes large-area
rapid detection, so as to rapidly detect and position a defect.