Analysis and Simulation on Capacitance Detector Field
Xin Xie · Jisuanji fangzhen · 2008
The character of capacitance detector field was studied. First the two-electrode capacitive detector was researched, and it was deduced from electromagnetic theory that the detection field was quasi-electrostatic. Then simulation was made on the detector field of frequency-sensitive model and amplitude-coupling model. The simulation results show that the isopotential lines around the amplitude- coupling detector is much desener and whose distribution is much further, which obviously explains that the amplitude-coupling model is more sensitive than the frequency-sensitive model.