Objectives and competences
The objective of the course is to get acquainted with the basics of measuring technique, understanding the operation of measuring instruments and measuring the basic quantities in electrical engineering, using measurement methods, analyzing the operation of A/D cards for capturing measurement data, by synthesizing measurement schemes using virtual instrumentation and by evaluating the measurement results, disruptions and errors occurring in the measuring technique.
Content (Syllabus outline)
• Introduction: basic definitions of the measurement technique, properties of measurement devices, quantities and their interconnection, international system of units (SI).
• Evaluation of measurements and measurement errors.
• Measurement chain elements (probes, measurement circuits, amplifiers, measurement converters: U/I, U/f, f/I, I/U, input filters, measurement transformers, Hall probe).
• Electrical measurement devices: analogue measurement devices.
• A/D, D/A conversion and different typs of conversions.
• Digital electronic measurement devices: digital electronic voltmeter, digital electronic oscilloscope, digital electronic counter, frequency meter, Bode plotter, current clamps, logic analyser.
• Measurement disturbances and influence quantities.
• Measurement bridges: DC bridges, alternating bridges, digital compensators.
• Digital measurement methods and electrical quantity measurements: voltage and current measurement, resistance, impedance, power, inductance, mutual inductance, capacitance and dielectric loss measurement, frequency, period and phase angle measurement, time to digital conversion (TDC), measurement of ferromagnetic material characteristics, measurement of magnetic induction and magnetic field strength.
• Intelligent measurement devices: principle of automated measurement and instruments.
Learning and teaching methods
• lectures, e-learning,
• tutorials,
• lab work.
Intended learning outcomes - knowledge and understanding
• demonstrate knowledge of basic terms and definitions in metrology,
• able to evaluate the results of the measurement results,
• able to make a synthesis of the measurement scheme,
• correctly display and evaluate the measurement results,
• to create a computer interface for the measuring system,
• use appropriate digital measurement methods and instruments,
• understand the principles of digital measuring instruments
Intended learning outcomes - transferable/key skills and other attributes
• Communication skills: oral lab work defense, written expression at a written examination,
• Calculation skills: work with the Multisim simulator,
• Problem solving: simulate measurement methods, use instruments,
• Measure basic quantities in electrical engineering, use basic measurement methods,
• Using software tools to write reports,
• Group work: laboratory work.
Readings
• V. Matko: Digitalni merilni instrumenti in merilne metode: zapiski predavanj. Maribor: Fakul. za elektro, raču. in inform, 2020.
• F. Bergelj: Meritve 2.del, Univerza v Ljubljani , Fakulteta za elektrotehniko Ljubljana , ISBN 961-6210-85-8.
• MATKO, Vojko. Parametrični vplivi na kakovost in zanesljivost merilnega vezja: učbenik. 1. izd. Maribor: Univerza v Mariboru, Univerzitetna založba: Fakulteta za elektrotehniko, računalništvo in informatiko, 2022. 1 spletni vir (1 datoteka PDF ([VI], 85 str.)), ilustr. ISBN 978-961-286-606-8. https://dk.um.si/IzpisGradiva.php?id=81747.
• J. G. Webster: Measurement, Instrumentation and Sensors, CRC Press, Florida, ISBN 0-8493-8347-1.
• R. Lerch: Elektrische Messtechnik: Analoge, digitale und computergestutzte Verfahren, 7. Auflage, Springer Vieweg, Berlin Heidelberg, 2016.
Prerequisits
Basic knowledge of electrical engineering, mathematics and physics.
Additional information on implementation and assessment The written exam may be substituted with continuous knowledge testing and assessment.
