Electrical Measurements and Instrumentation B

Prerequisite:

Physics 1 (X02FY1)
Electrical Circuits 2 (X31EO2)
Electronics (X34ELE)

Lecturer:

Vladimír Haasz (gar.)

Tutor:

Supervisor:

Department of Measurement

Synopsis:

Electrical and electronic measuring instruments, digital instruments, methods of measurement of electrical quantities (voltage, current, power, frequency, resistance, capacitance and inductance), basic magnetic measurements, basics of measurement systems, basics of sensors for measurement of selected non-electrical quantities.

Requirements:

Syllabus of lectures:

Ref. [1] and [2] will be referred to during the lectures.

1. Introduction, accuracy of measurement, uncertainty estimation

2. Analogue meters. PMMC meter. Iron vane and electrodynamic meters

3. Measuring amplifiers with OA. Measurement of sum and difference. Converters of average value. Integrating amplifier

4. Frequency and phase shift measurements, measurement of revolutions

5. DC and AC current and voltage measurements - methods and instrumentation, RMS converters, temperature measurement using thermocouples

6. DACs and ADCs

7. Measurement of resistance - methods, instruments, converters

8. Basics of R sensors, digital multimeters

9. Measurement of power and energy, digital wattmeters, analogue multipliers 10. Measurement of impedance and admittance (L-R, C-G) - methods and instruments, basics of L and C sensors

11. Measurement of B, H, and magnetising characteristics of ferromagnetic materials

12. Analogue and digitising oscilloscopes, sampling methods of measurement

13. Instruments controlled by microcontrollers. Generators of measuring signals, optoelectronic sensors

14. Data acquisition systems

Syllabus of tutorials:

1. Introduction, safety in lab. Analogue oscilloscope - basic control and measurement

2. Frequency dependence of AC voltmeters. Voltage divider

3. Measuring amplifiers (low DC voltage). Low currents measurement

4. Influence of form factor on meter readings. Measuring rectifier

5. One-phase active power measurement. Frequency measurement

6. Principle of signal sampling. Test I

7. Digitising oscilloscope, application of passive probe. Measurement of low resistances

8. IEEE 488 measurement system. Test II

9. Measurement of leakage flux of power transformer

10. Imballanced Wheatstone bridge. Test III

11. Digital impedance and admitance meter

12. Amplitude permeability measurement. Test IV

13. Solving individual measurement tasks

14. Solving individual measurement tasks

Study Objective:

Study materials:

1. Haasz, V., Sedláček, M.: Electrical Measurements. Publ. House ČVUT, Prague 2006

2. Sedláček, M., Holub, J., Hejtmanová, D.: Laboratory Exercises in Electrical Measurements. Publ. House ČVUT, Prague 2005

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Electronics and Communication Technology - structured studies (compulsory course)