450-8701/01 – Electrical Measurements (EMe)
| Gurantor department | Department of Cybernetics and Biomedical Engineering | Credits | 6 |
| Subject guarantor | Ing. Richard Velička, Ph.D. | Subject version guarantor | Ing. Richard Velička, Ph.D. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | summer |
| | Study language | Czech |
| Year of introduction | 2010/2011 | Year of cancellation | |
| Intended for the faculties | FS, USP | Intended for study types | Bachelor |
Subject aims expressed by acquired skills and competences
Students learn to use electrical measuring instruments and to measure basic electrical quantities.
An integral part of the student's competence is also the knowledge of calculating the deviation and uncertainty of the measurement result.
Teaching methods
Lectures
Individual consultations
Experimental work in labs
Project work
Teaching by an expert (lecture or tutorial)
Summary
Students will learn to use all types of measuring devices, from analog to digital to virtual, which they will also try to create. They will be able to measure basic electrical quantities and passive elements using various methods.
An integral part of every measurement is also knowledge of the calculation of deviation (error), the uncertainty of the measurement result.
Compulsory literature:
1. VELICKA, R., BICOVSKA, B., ONDRACZKA, T.: Methods and Measurement in Electrical Engineering, VSB-TU Ostrava, INTERREG V-A, PROJECT REG. NUMBER:CZ.11.3.119/0.0/0.0/16_022/0001155, Ostrava 2021. 86 p. [On-Line]: http://lms.vsb.cz.
2. Sedláček, M., Haasz, V.: Electrical Measurements and Instrumentation, ČVUT 2000
3. Hejtmanová, D., Ripka, P., Sedláček, M.: Electrical Measurements and Instrumentation, Laboratory excercises, ČVUT 2001
Recommended literature:
Way of continuous check of knowledge in the course of semester
Verification of study:
- Regular handover of protocols.
- Exercise tests.
Practical test measurement.
Conditions for credit:
Full attendance in laboratory training including the practical test measurement. It is necessary to get at least 51 assessing points.
E-learning
Study according to the materials in the LMS system for the given subject (https://lms.vsb.cz).
Other requirements
There are not defined other requirements for student
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Topics of lectures (the order of lectures may change, there may be several topics in one lecture):
• INTRODUCTION, GRADUATION CONDITIONS, CREATION OF PROTOCOL
• MEASUREMENT ACCURACY
Method error (deviation).
Error (deviation) of the measuring device
Errors of digital measuring devices
Indirect measurement
Errors due to interference
Measurement uncertainty
• MEASUREMENT OF PASSIVE ELEMENTS
Methods of measuring passive quantities
Resistance measurement
Impedance measurement
Measurement of parameters of coils, chokes
Resonance method of measuring inductance and capacity
Digital LCR meters, RLC bridges
Measuring small resistances
Measuring large resistances
• MEASURING INSTRUMENTS
Pointing device
Types of signals
Measurement of effective value with analog measuring devices
Measurement of effective value with digital measuring devices
Measuring transducers
Measuring device of devices
Properties of measuring devices
• OSCILLOSCOPES
Analog oscilloscope
Digital oscilloscope
Measurement of active quantities with an oscilloscope
• SINGLE PHASE POWER
Performance measurement in general
Direct current power measurement
Measurement of single-phase power
• THREE-PHASE NETWORK (topic for MEO subject is optional)
Measurement of active power
Reactive power measurement
Phasor diagram of voltages and currents
• FREQUENCY AND PHASE SHIFT
Frequency measurement
Phase shift measurement
Universal counter
Frequency analyzer
Filters
• CHARACTERISTICS OF FERROMAGNETIC MATERIALS (topic for MEO subject is optional)
Magnetic quantities
Measurement of characteristics of ferromagnetic materials
• VIRTUAL INSTRUMENTATION
Virtual measuring instrument
Measuring converter (A/D – Analog-to-digital converter)
Measurement card
VXI bus
• DEVICE COMMUNICATION
Communication interface
Communication via GPIB
• EXTERNAL EXPERT LECTURE - electricity transmission, quality, measurement
Labs:
- Introductory theoretical preparation, safety in the laboratory,
- Task No. 1 – Measurement accuracy,
- Task No. 2 – Passive elements,
- Task No. 3 – Properties of measuring devices,
- Task No. 4 – Oscilloscope,
- Task No. 5 – Single-phase power,
- Task No. 6 – Three-phase network,
- Task No. 7 – Frequency and phase shift,
- Task No. 8 – Ferromagnetic materials,
- Task No. 9 – Virtual Instrumentation,
- Task No. 10 – Digital oscilloscope and communication,
- Independent measurement (mandatory task).
Projects:
10 protocols from measurements according to laboratory exercises.
Tests:
10 test questions - in each exercise 1.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction