Electrical Measurement for Audio Engineering
FEKT-JMVAAcad. year: 2017/2018
The course is focused on measuring electrical, magnetic, and non-electrical quantities. In the first part of the semester, students are introduced to the basics of metrology in order to be able to evaluate the accuracy of measuring methods and measuring instruments, both analogue and digital. In subsequent sections the principles, structure and characteristics of measuring instruments, sampling, A/D and D/A converters, oscilloscopes and counters are explained. Almost half of the semester is devoted to methods of measuring voltage, current, frequency, time interval, phase, power, resistance, capacitance, inductance and resonant frequency, magnetic quantities, and non-electrical quantities.
In laboratory exercises, students verify in practice the knowledge acquired in lectures: implementation of measuring methods, selection of appropriate measuring equipment, measurement proper, and accuracy evaluation via calculating the uncertainties.
Classification of measuring instruments for electrical quantities. Principles of correct measurement, evaluation of the accuracy of instruments and methods, uncertainties of direct and indirect measuring methods. Analogue measuring instruments. Digital measuring instruments, sampling, A/D converters, characteristics. D/A converters. Measuring amplifier, its characteristics and use in measuring technology. Oscilloscopes. Basic methods for measuring voltage, current, frequency, time interval, phase, power, resistance, capacitance, inductance, and resonant frequency. Measurement of acoustic quantities and characteristics of audio equipmen. Measurement of non-electrical quantities. Automated measurement.
Learning outcomes of the course unit
Students who complete this course are able to:
- Evaluate the accuracy of the measuring method and instrument.
- Explain the construction and characteristics of standards of measuring el. quantities.
- Be knowledgeable about the choice of suitable measuring techniques and methods, realise measuring tasks and evaluate measurement accuracy.
- Operate basic types of measuring instruments, oscilloscopes and counters.
- Explain the principle of converters realising mathematical operations, A/D converters, and D/A converters.
- Explain the principle of analogue and digital measuring instruments, evaluate their advantages and disadvantages.
- Be well informed in the choice of a suitable method for measuring active and passive electrical quantities, evaluate their advantages and disadvantages.
- Be well informed in the choice of a suitable method for measuring magnetic and non-electrical quantities.
Knowledge at the level of secondary education and completion of obligatory courses taken in the first year of study at FEEC are required. Emphasis is placed on the knowledge of basic statistical methods, theoretical electrical engineering, signal processing, and analogue technology.
Recommended optional programme components
Recommended or required reading
BARTUŠEK, K.; GESCHEIDTOVÁ, E.; KUBÁSEK, R.; MIKULKA, J.; REZ, J.; STEINBAUER, M. Měření v elektrotechnice. Měření v elelektrotechnice. Brno: VUTIM, 2010. ISBN: 978-80-214-4160- 6. (CS)
BARTUŠEK, K.; GESCHEIDTOVÁ, E.; REZ, J.; STEINBAUER, M. Měření v elektrotechnice - návody k laboratorním cvičením. Brno: Ing. Zdeněk Novotný, CSc., Ondráčkova 105, 628 00 Brno, 2006. s. 1-118. ISBN: 80-214-3265-9. (CS)
GESCHEIDTOVÁ, E., STEINBAUER, M. Multimediální podpora výuky předmětu Měření v elektrotechnice. FRVŠ. Brno: FRVŠ, 2004. s. 0-17. (CS)
COOMBS,C.F.: Basic Electronic Instruments Handbook, McGraw-Hill (EN)
GESCHEIDTOVÁ, E. Mereni_pro_teleinformatiku_pro_integrovanou_vyuku_VUT_a_VSB_TUO.pdfMereni_pro_teleinformatiku_pro_integrovanou_vyuku_VUT_a_VSB_TUO
Planned learning activities and teaching methods
The methods of teaching depend on the form of classes; they are described in Article 7 of the Rules of studies and examinations of BUT.
Assesment methods and criteria linked to learning outcomes
The student can achieve:
- up to 20 points for the correctly prepared and in time submitted jobs
- up to 10 points for the absolved test measurement,
- up to 70 points for the exam.
The exam is focused on verifying the student’s orientation in the problematic of accuracy, construction, and characteristic of measuring instruments and methods.
Language of instruction
1. Principles of correct measurement, standards of measuring electrical quantities.
2. Evaluation of the accuracy of analogue and digital instruments.
3. Uncertainties of direct and indirect measuring methods.
4. Measuring amplifier, its characteristic and use in measuring technology, converters for the realization of mathematical operations.
5. Analogue measuring instruments.
6. Digital measuring instruments, sampling, A/D converters, characteristics.
7. D/A converters.
9. Basic methods for measuring voltage, current, frequency, time interval, phase, and resonance frequency.
10. Basic methods for measuring power.
11. Basic methods for measuring resistance, capacitance, and inductance.
12. Magnetic measurement. Measurement of non-electrical quantities.
13. Measurement of acoustic quantities and characteristics of audio equipment. Automated measurement.
The aim of the course is to provide students with information about methods for evaluating the accuracy of instruments and methods, about measuring instruments and methods for measuring active and passive quantities, as well as magnetic and non-electrical quantities.
Specification of controlled education, way of implementation and compensation for absences
Attendance at laboratory exercises is compulsory; authorized absence from laboratory exercises can be made up for, after agreement with the teacher (usually in the last week of the semester).