Vojko Matko (Author), Miro Milanovič (Author)

Abstract

A new method for the automated measurement of the hysteresis of the temperature-compensated inductance-to-frequency converter with a single quartz crystal is proposed. The new idea behind this method is a converter with two programmable analog switches enabling the automated measurement of the converter hysteresis, as well as the temperature compensation of the quartz crystal and any other circuit element. Also used is the programmable timing control device that allows the selection of different oscillating frequencies. In the proposed programmable method two different inductances connected in series to the quartz crystal are switched in a short time sequence, compensating the crystal’s natural temperature characteristics (in the temperature range between 0 and 50 °C). The procedure allows for the measurement of the converter hysteresis at various values of capacitance connected in parallel with the quartz crystal for the converter sensitivity setting at selected inductance. It, furthermore, enables the measurement of hysteresis at various values of inductance at selected parallel capacitance (sensitivity) connected to the quartz crystal. The article shows that the proposed hysteresis measurement of the converter, which converts the inductance in the range between 95 and 100 μH to a frequency in the range between 1 and 200 kHz, has only 7 × 10−13 frequency instability (during the temperature change between 0 and 50 °C) with a maximum 1 × 10−11 hysteresis frequency difference.

Keywords

konverterji;merjenje;frekvenčni pretvorniki;kvarčni kristali;histereza;senzorska stikala;induktanca;inductance-to-frequency converter;hysteresis;automated measurement;sensor switching method;inductance;quartz crystal;temperature compensation;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FERI - Faculty of Electrical Engineering and Computer Science
UDC: 681.586
COBISS: 19646998 Link will open in a new window
ISSN: 1424-8220
Parent publication: Sensors
Views: 1417
Downloads: 389
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Other data

Secondary language: Slovenian
Secondary keywords: konverterji;merjenje;frekvenčni pretvorniki;kvarčni kristali;histereza;senzorska stikala;induktanca;
Type (COBISS): Scientific work
Pages: str. 1-14
Volume: ǂVol. ǂ16
Issue: ǂiss. ǂ7
Chronology: Jul. 2016
DOI: 10.3390/s16070995
ID: 9153934