Description:

Measuring of electric values, principles, using, and parameters. Analogue measuring converters. Electromechanical measuring devices. Current and potential measuring. Frequency and shift phase measuring. Electric work and electric power measuring: direct current, single-phase and three-phase current. Electrical resistance and impedance measuring. Magnetic measuring. Analogue scope. Digitalization, digital signal processing, signal reconstruction. Electronic measuring devices: multimeter, digital scope. Optoelectronic measuring device.

Contents:

1. Introduction to measurements, metrological properties of measuring insturments. Electromechanical measuring instruments.
2. Measurement error and uncertianity.
3. Measurement of direct current and voltage - standards, selection of measuring instrument and connection into circuits, selection of measuring ranges.
4. Measurements of alternating currents and voltages - standards, selection of measuring instrument and connection into circuits, selection of measuring ranges.
5. Power and energy measurements of direct current, single-phase and three-phase alternating current - measuring techniques and instruments.
6. Measurements of electric resistance using direct current.
7. Frequency and phase shift measurements.
8. Magnetic measurements.
9. Measurements of electric impedances, theory of bridge circuits.
10. Analog measuring converters - operational amplifiers, measuring amplifiers, measuring rectifiers.
11. Basic electronic measuring instruments - digital multimeters, connections of operational amplifiers.
12. Digitalization, digital signal processing and reconstruction of measured signal - signal sampling and samplers, A/D and D/A converters.
13. Multimeters. Analog and digital osciloscopes.
14. Measurement systems - categories, structures, standardized busses. LabVIEW. Exam topics and exampels.

Seminar contents:

1. Introduction, safety regulations for work in the electro laboratory, laboratory regulations, introduction of measuring devices e.g. power sources, multimeters, oscilloscopes, generators.
2. Simple connections and settings of measuring instruments for practical illustration of Kirchhoff's laws, Ohm's law and linearity of resistances and nonlinearity of diodes.
3. Measurement uncertainties - examples with respect to available measuring instruments.
4. Measurement of direct and alternating currents and voltages, digital multimeter.
5. Measurement of resistances: substitution method, ohm method for small and large resistances.
6. Power measurement for DC and AC quantities.
7. Digital Oscilloscopes: frequency and phase shift measurement.
8. Measurement of resistance and impedances. Measuring bridges, LC meter, equivalent circuit models.
9. Impedance measurement. Serial RLC circuit.
10. Sampling circuit: measuring the influence of the main capacitance on the parameters of the sampled signal.
11. Automated measurements, measuring systems, LabView: applications in biomedical tasks.
12. Measurement of electrical characteristics of multi-ports.
13. Measurement of VA characteristics of semiconductors.
14. RC cells, measurement of frequency amplitude and phase characteristics.

Recommended literature:

[1] Haasz, Sedláček: Electrical Measurements. 1. vydání. Praha: ČVUT,
2006.
[2] Sedláček, Haasz: Uncertainties in Electrical Measurement. 1. vydání. Praha: ČVUT, 2004.
[3] VRBA, J. Specific guidelines for the development of laboratory protocols for electrical engineering subjects [online]. Czech Republic, Kladno, CTU in Prague [cit. 2019-02-05] Last modification[18-02-2019]. Available at: https://predmety.fbmi.cvut.cz/cs/F7abbem
[4] VRBA, J. Sample protocol for the subject Electrical Measurements 17ABBEM [online]. Czech Republic, Kladno, CTU in Prague [cit. 2019-02-05] Last modification[18-02-2019].. Available at: https://predmety.fbmi.cvut.cz/cs/F7abbem

Abbreviations used:

Semester:

• W ... winter semester (usually October - February)
• S ... spring semester (usually March - June)
• W,S ... both semesters

Mode of completion of the course:

• A ... Assessment (no grade is given to this course but credits are awarded. You will receive only P (Passed) of F (Failed) and number of credits)
• GA ... Graded Assessment (a grade is awarded for this course)
• EX ... Examination (a grade is awarded for this course)
• A, EX ... Examination (the award of Assessment is a precondition for taking the Examination in the given subject, a grade is awarded for this course)

Weekly load (hours per week):

• P ... lecture
• C ... seminar
• L ... laboratory
• R ... proseminar
• S ... seminar