Title :
A new method for a self-calibrating capacitive sensor
Author :
Mohr, Thomas ; Ehrenberg, Uwe ; Uhlmann, Hermann
Author_Institution :
Dept. of Fundamentals & Theor. of Electr. Eng., Tech. Hochschule Ilmenau, Germany
Abstract :
In this paper a new method for a self-calibrating capacitive sensor for threshold liquid level measurement is presented. The basic theoretical ideas are described and illustrated. The theoretical results are proven by field simulations. For practical experiments, a container was manufactured and special electronic circuits were developed. The values of the capacitors are measured, converted into digital values and transferred to the computer. Experimental results are depicted
Keywords :
calibration; capacitive sensors; compensation; level measurement; capacitive decoupling; capacitor difference; characteristic curves; compensation; field simulations; galvanic decoupling; self-calibrating capacitive sensor; threshold detection; threshold liquid level measurement; Capacitance; Capacitive sensors; Capacitors; Circuit simulation; Computational modeling; Computer aided manufacturing; Containers; Electrodes; Electronic circuits; Resistors;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.928859
