The tomography sensor of capacitance in rectangle form includes the frame, the outlay measurement electrode, the built-in measurement electrode, the insulation electrodes, the driving protection pole, the end shield and the shield frame. The insualtion electrode, the end shield are connected to the shield frame, forming a sthe whole. The measurement electrodes are plainly pasted on the surface of the rectangular frame, positioned on the exterior of the frame at the measurement area. The insulation electrodes are placed between the measurement electrodes with their electrodes are perpendicular to each other. The insulation electrodes located on the four corners are larger than other insulation electrodes are connects to the shield frame directly. The shield frame envelops all the electrodes of the sensor. |