Citation link:
Authors:
Nikolov, Georgi Todorov; Stoyanov, Ivan Iliev; Nikolova, Boyanka Marinova
Title:
RLC measurement using virtual counting techniques
Date of Issue:
2006
Is Part of:
Proceedings of the Technical University – Sofia, 56(2), 2006, pp. 242-247
Publisher:
TU - Sofia
Identifiers:
1311-0829 [issn]
Type:
Article
Language:
eng
Subject:
counting techniques; ratiometric calibration method; RLC measurement; sensor
Abstract:
In the present paper a frequency mode data acquisition technique, which converts resistance, capacitance or inductance values into a frequency-based signal by placing the measured element into a relaxation oscillator is considered. The system is realized using low cost oscillator with one comparator and capability of virtual instrumentation. The design process of the software that controls the virtual RLC meter is explained in brief. In order to increase the measurement accuracy and due to possibility of virtual instrumentation the ratiometric calibration method is suggested and put into practice. The fair accuracy of the virtual RLC meter is verified by experimental results from resistance and capacitance measurements. As example of the versatile applications of the system, the virtual system based on RH capacitive sensor is realized.
Description:
Reviewer prof. Marin Marinov. - Formulas, tables, schemes - References, pp. 247
