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1. (WO2018015541) ARRANGEMENT FOR MEASURING CAPACITANCE

Pub. No.:    WO/2018/015541    International Application No.:    PCT/EP2017/068492
Publication Date: Fri Jan 26 00:59:59 CET 2018 International Filing Date: Sat Jul 22 01:59:59 CEST 2017
IPC: G01N 27/22
G01R 27/26
Applicants: OSTBAYERISCHE TECHNISCHE HOCHSCHULE REGENSBURG
Inventors: SCHUBERT, Martin Josef Wilhelm
SEIGN, Stefan
Title: ARRANGEMENT FOR MEASURING CAPACITANCE
Abstract:
The present invention is in the field of measuring capacitance of a measurement capacitor C. The measured capacitance can depend on humidity, for example on the humidity of soil. An arrangement for measuring the capacitance includes a first circuit and a second circuit, wherein the second circuit is adapted to provide a signal corresponding to the capacitance of the measurement capacitor C based on a signal provided by the first circuit system. More specifically, the first circuit includes at least two diodes connected in series, wherein a first port of the measurement capacitor C is connected to the contact between two of the diodes connected in series and a second port of the measurement capacitor C is connected to a signal line.