| 主权项 |
1. A system for tomographic imaging in a pipe, tube or other object comprising:
a sensor, comprising at least four electrodes, positioned in a predetermined arrangement relative to each other around the pipe, tube, or object; each of the electrodes comprising a plurality of capacitance plate segments, each of the capacitance plate segments of each of the electrodes defining a capacitor when paired with a corresponding capacitance plate segment of one of the other electrodes; a voltage source, arranged to impart a voltage to selected capacitance plate segments, a sensitivity of the sensor being controlled by at least one of: the amount and the distribution of the imparted voltage applied to the selected capacitance plate segments; a measuring circuit, connected to each of the at least four electrodes to detect a capacitance of any of the capacitors between any selected pair of the electrodes though currents induced in the measuring circuit; and a first processing system, in communication with the measuring circuit, the first processing system programmed with instructions for executing on the first processing system to: convert capacitance data collected therefrom into an image. |
