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Lecturer(s)
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Aichinger Ladislav, Ing. Ph.D.
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Kybic Radim, Ing. Ph.D.
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Veselý Alexander Hanns, Ing. Ph.D.
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Vlášek Jaroslav, Ing.
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Čejka Miroslav, Ing.
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Firstová Kateřina, doc. Ing. CSc.
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Büllow Miroslav, Ing. Ph.D.
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Janouškovec Václav, Ing. Ph.D.
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Course content
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Topics of the lectures: 1) Introduction, systems of units , measuring methods, errors of measurement, propagation of the errors of indirect measurements 2) Measurement of DC and AC voltage and current. Direct and indirect methods (deflective instruments, comparators, compensators). Laboratory standards of voltage and current. 3) Measurement of power of DC and AC current. Measurement of power in 3-phase system. Nominal power factor and constant of wattmeter. Methods to check the phase sequence. 4) Measurement of frequency and phase shift and time intervals. Electronic frequency counters and laboratory frequency standards. 5) Measurements of resistance. Direct and indirect methods, bridge methods. Ohm-meters, laboratory resistance standards. 6) Measurement of impedances. Equivalent circuits of real inductor and capacitor. Methods to measure inductors and capacitors (V-meter/A-metter method, V-meter/A-meter/W-meter method, method of 3 V-meters etc.). Laboratory standards of inductance and capacity. 7) Measurement of impedances. Bridge methods, resonant methods, digital RLC meters. 8) Magnetic measurements. Measurement of DC and AC magnetic field. Probes for measurement of magnetic field. Method for measurement of the dynamic hysteresis loop of a ferromagnetic material. 9) Electrical measuring instruments. Principles and basic features of electromechanical measuring systems (permanent magnet moving coil instruments, moving iron instruments, electrodynamic and ferrodynamic instruments, induction instruments) 10) Electronic measuring instruments. Measuring transducer, measuring amplifier, operational amplifier as a core part of measuring transducer, instrumentational amplifier. Transducers for measurement of peak, average, RMS and TRMS values. Active rectifier in electronic measuring instrument. 11) Digital multimeter (DMM). Typical block diagram of DMM. Input signal conditioning for voltage, current and resistance measurement by DMM. Analog to digital converter in DMM - principle, features limitations. Typical expression of errors of DMM. Interference types and their rejection (SMRR, CMMR parameters). 12) Digital and analog oscilloscope, block diagrams, principles of operation. Types of oscilloscopes, their features, use, limitations. Methods to sample and digitalize an analog signal. Analog to digital converter in digital oscilloscope - principle, features, limitations. 13) Oscilloscopic probes. Passive, active, differential and current probes - principles and use. High-impedance probe compensation.
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Learning activities and teaching methods
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- Preparation for an examination (30-60)
- 50 hours per semester
- Contact hours
- 39 hours per semester
- Practical training (number of hours)
- 26 hours per semester
- Preparation for laboratory testing; outcome analysis (1-8)
- 8 hours per semester
- Preparation for comprehensive test (10-40)
- 10 hours per semester
- unspecified
- 45 hours per semester
- Contact hours
- 20 hours per semester
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| prerequisite |
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| Knowledge |
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| to apply elementary rules and methods for the circuits analysis (Ohms law, Kirchhoff laws, Thomson formula, phasor diagrams) |
| to apply the basic of higher-mathematics including rules for derivation and integration |
| Skills |
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| to solve elementary versions of DC and AC circuits containing RLC elements (RC networks, resonant circuits, the superposition principle, Thevenin/Northon theorem, etc.) |
| to characterize and specify features of basic electrical and electronic elements and components (capacitor, inductor, resistor, transformer, diode, transistor, operational amplifier) |
| Competences |
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| N/A |
| N/A |
| N/A |
| learning outcomes |
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| Knowledge |
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| to explain essential methods for measurement active and passive electrical quantities |
| to specify both advantages and drawbacks of particular measuring methods depending on conditions of measurement |
| to explain principles and technical limits of basic measuring instrumentation (voltmeter, ampermeter, wattmeter, multimeter, frequency counter, oscilloscope, function generator) |
| to choose the most suitable method for measurement of particular electrical quantity and justify its use |
| Skills |
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| to build an electrical circuit for measurement of particular electrical quantity |
| to operate a basic measuring instrumentation (voltmeter, ampermeter, wattmeter, multimeter, frequency counter, oscilloscope, function generator) |
| to choose most suitable measuring instrument for measurement of particular electrical quantity |
| to evaluate the results of the measurement |
| Competences |
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| N/A |
| N/A |
| N/A |
| teaching methods |
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| Knowledge |
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| Lecture |
| Lecture with visual aids |
| Skills |
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| Laboratory work |
| Competences |
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| Lecture |
| Lecture with visual aids |
| Laboratory work |
| assessment methods |
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| Knowledge |
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| Combined exam |
| Test |
| Skills |
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| Skills demonstration during practicum |
| Individual presentation at a seminar |
| Competences |
|---|
| Combined exam |
| Test |
| Skills demonstration during practicum |
| Individual presentation at a seminar |
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Recommended literature
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Haasz, V. a kol. Elektrická měření - přístroje a metody. Praha, ČVUT, 2018. ISBN 978-80-01-06412-2.
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Haasz, V., Sedláček, M. Elektrická měření - přístroje a metody. Praha, ČVUT, 2005. ISBN 80-01-02731-7.
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Kularanta, N. Digital and Analogue Instrumentation ? testing and measurement. London, IEE, 2003. ISBN 0852969996.
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Northrop, R. B. Introduction to Instrumentation and Measurements. New York, 2017. ISBN 9781138071902.
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Tumanski, S. Principles of Electrical Measurement. New York, 2006. ISBN 9780750310383.
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Tůmová, O. a kol. Elektrická měření, měřicí metody. Plzeň, ZČU, 2005. ISBN 80-7043-412-0.
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Vedral, J., Svatoš, J. Zpracování a digitalizace analogových signálů v měřicí technice. Praha, ČVUT, 2018. ISBN 978-80-01-06424-5.
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Webster, J. G., Eren, H. Measurement, Instrumentation, and Sensors Handbook: Electromagnetic, Optical, Radiation, Chemical, and Biomedical Measurement. New York, 2017. ISBN 9781138072183.
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