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Lecturer(s)
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Slavík Lubomír, Ing. Ph.D.
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Course content
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Lectures: 1. Introduction to the measurement, fundamental terms. Measurement definitions and tasks. Metrological basics of measurement, metering system, physical quantities units. 2. Measurement errors, additive, multiplicative, quantizing. Measurement indeterminateness, measurement uncertainty. Metrological measurement basics. Direct and indirect measurement. Measurement uncertainty determination. 3. Measurement methods, deflection, zeroing, resonance, comparable, substitute, differential methods. Well - balanced and unequal impedance bridge, conditions of bridge balance, bridge sensitivity. 4. Electromechanical measurement instruments, static and dynamic properties. Magneto-electric(moving-coil), magneto-electric with rectifier, electro-magnetic instruments, analog measurement of electric voltages and currents. Electrodynamics, ferrodynamic and inductive instruments, electric power and energy measurement. Ratio and vibration instruments. Electromechanical instruments marking. 5. Electronic measurement instruments elements and circuits. Operational amplifiers, characteristics. Measuring amplifier, inverting and no inverting amplifier, impedance inverter, instrumental amplifier, integrative and derivational amplifier. Analog comparator. Filters in measuring instruments. Analog switches. Sampling circuits. A/D and D/A converters. 6. Digital measurement of basic electric quantities, numerical strain measuring, flow and resistance. Principle and characteristics numerical multimeters. Splatter-disturbance and his suppression near numerical voltmeters 7. Impedance and admittance measurement. Direct - measuring impedance and admittance instruments using phasor, bridge and resonance methods. 8. Oscilloscope measurement, basic properties of analog and digital oscilloscopes. 9. Voltage and current sources. Importance and basics schematics. Stabilization factor. 10. Generators. Basic oscillators. Harmonic generators, impulse generators. Function generators. Frequency synthesizers. 11. Digital time and frequency measurement. Principles, schematics and properties of universal counters. 12. Spectral analyzers principles and properties. Spectra of chosen signals Practice: 1. Practices: Absolute and relative errors at analogous and digital instruments. Measurement uncertainties. Indirect measurement. Methodic for measurement and measured quantities processing. The least square method. 2. Practices in Laboratory: Voltage divider measurement. Resistance changes in Wheatston bridge branch. Frequency dependence of AC voltmeters. Analog and digital oscilloscope measurement. Electric power measurement. Measuring amplifier basic characteristic measurement. A/D converters characteristics measurement. Comparator measurement. Stabilized power sources measurement. Internal power source resistance measurement, stabilization factor, function generators. Piezoelectric resonators parameters identification. Oscillator circuits, counters. 3. Practices of lectures, repeating.
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Learning activities and teaching methods
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Monological explanation (lecture, presentation,briefing), Demonstration, Project teaching, Laboratory work
- Semestral paper
- 24 hours per semester
- Preparation for exam
- 40 hours per semester
- Class attendance
- 56 hours per semester
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Learning outcomes
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The subject is an introduction to the technical measurement problems. Students are prepared to the basic measuring methods, electrical and electronic instruments and will learn to measure electrical quantities and set the measuring errors by means of that instruments.
Student obtains review an introduction to the technical measurement problems. Student is prepared to the basic measuring methods, electrical and electronic instruments and will learn to measure electrical quantities and set the measuring errors by means of those instruments.
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Prerequisites
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The presumptions are a good knowledge from mathematics, physics, mechanics, electrotechnics and electronics.
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Assessment methods and criteria
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Student's performance analysis, Practical demonstration of acquired skills
Active participation in practices, all measurement protocols elaboration, inclusion (credit) obtaining
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Recommended literature
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Fajt V. a kol. Elektrická měření..
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Fajt V. Haasz V. Sedláček M. Elektrická měření..
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Haasz, V., Sedláček,M.:. Elektrická měření (Přístroje a metody). ČVUT, Praha, 2003.
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Hejtmanová D. Draxler K. Kašpar P. Šimůnek M. Elektrická měření - laboratorní cvičení..
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Ripka, P., Ďaďo, S.,Kreidl, M., Novák, J. Senzory a převodníky. ČVUT, Praha, 2005. ISBN 80-01-0123-3.
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Šindelář V., Tůma Z. Metrologie, její vývoj a současnost..
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Vedral J. Elektronické obvody měřicích přístrojů..
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Vedral J. Fischer J. Elektronické obvody pro měřicí techniku..
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