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 AD2B38EMB Electrical Measurements and Instrumentation Extent of teaching: 14P+6L Guarantors: Roles: P,V Language ofteaching: CS Teachers: Completion: Z,ZK Responsible Department: 13138 Credits: 5 Semester: Z

Anotation:

Methods of measurement of electrical physical quantities (voltage, current, power, frequency, resistance, capacitance and inductance) are explained together with principles of their correct application and accuracy estimation. The course is closed by presenting information of several basic electronic measuring instruments and explaining fundamentals of magnetic measurements and basic information concerning measurement systems.

Study targets:

Students should be acquainted with fundamentals of electrical (and magnetic) measurement and instrumentation, I particular with measuring methods, current used instruments and their basic parts, their properties and correct application including their integration into data acquisition systems.

Course outlines:

 1 Introduction - measuring chain, accuracy of measurement - evaluation of uncertainties of direct and indirect measurements, error of method and its correction. 2 Instruments for voltage and current measurement (analog, digital). 3 Measuring amplifiers with OA, converters of average and of RMS value, phase-sensitive rectifier. 4 Converters for sum and difference measurement, analogue multipliers, measurement of frequency and phase shift. 5 AC or DC current and voltage measurement - standards, methods and instruments 6 Principle of sampling and quantisation of analogue signal, DACs and ADCs - principle and properties. 7 Measurement of resistance - converter R → U; methods for low and high resistance measurement, unbalanced Wheatstone bridge for sensor application. 8 Present-day digital multimeters, common mode rejection, principle of autocalibration and software calibration. 9 Measurement of power - definition, measuring methods, digital wattmeter; measurement of energy consumption. 10 Measurement of impedance and admittance in LF range - bridges, principle of digital LCR meters. 11 Measurement of DC and LF magnetic field, measurement of parameters and characteristics of ferromagnetic materials. 12 Analogue and digitising oscilloscopes, passive oscilloscope probe. 13 LF generators of measuring signals.. 14 Data acquisition systems - overview and application, GP-IB measuring system, DAQ systems based on plug-in boards, software for DAQ systems - overview.

Exercises outline:

 1 Introduction, safety in lab, oscilloscope - basic control and measurement. 2 Frequency dependence of AC voltmeters. Voltage divider. 3 Low currents measurement. Measuring amplifiers (low DC voltage). 4 Influence of form factor on meter readings. Measuring rectifier. 5 One-phase power measurement. Frequency and period measurement. 6 Principle of signal sampling. Test I. 7 Digitising oscilloscope + arbitrary generatior, application of passive probe. Measurement of low resistances. 8 IEEE 488 measurement system. Test II 9 Digital impedance and admittance meter. 10 Amplitude permeability measurement. Test III 11 Imballanced Wheatstone bridge - application for resistance changing transducers 12 Measurement of the leakage magnetic field of the transformer. 13 Solving individual measurement task 14 Solving individual measurement task

Literature:

 [1] V. Haasz, M. Sedláček: Electrical Measurements, University Textbook, Publishing House of CTU in Prague, Prague, 2006 [2] M. Sedláček, J. Holub, D. Hejtmanová: Laboratory Exercises in Electrical Measurements, Publishing House of CTU in Prague, Prague, 2011 [3] Placko D. : Fundamentals of Instrumentation and Measurement, ISTE 2007, ISBN 1 905209 39 8 [4] Northrop R.B.: Introduction to Instrumentation and Measurements, CRC 2005, 0-8493-3773-9

Requirements:

Knowledge of courses: Electronic components, Signals and systéme, Fundamentals of electrical circuits

Webpage:

http://measure.feld.cvut.cz/vyuka/predmety/A2B38EMB https://moodle.fel.cvut.cz/courses/A2B38EMB

Keywords:

Measurement, instrumentation, electrical quantity, measuring instrument, measuring method,

Subject is included into these academic programs:

 Program Branch Role Recommended semester BKOI1 Computer Systems V 3 BKOI_BO Common courses V 3 BKOI3 Software Systems V 3 BKOI2 Computer and Information Science V 3 BKEEM1 Applied Electrical Engineering V 3 BKEEM_BO Common courses V 3 BKEEM2 Electrical Engineering and Management V 3 BKKME1 Communication Technology P 3 BKKME5 Komunikace a elektronika P 3 BKKME_BO Common courses P 3 BKKME4 Network and Information Technology P 3 BKKME3 Applied Electronics P 3 BKKME2 Multimedia Technology P 3 BKKYR1 Robotics V 3 BKKYR_BO Common courses V 3 BKKYR3 Systems and Control V 3 BKKYR2 Sensors and Instrumentation V 3 BIS(ECTS)-D Intelligent Systems V 3 BKSTMWM Web and Multimedia V 3 BKSTMSI Software Engineering V 3 BKSTMMI Manager Informatics V 3 BKSTMIS Intelligent Systems V 3 BKSTM_BO Common courses V 3 BSI(ECTS)-D Software Engineering V 3 BWM(ECTS)-D Web and Multimedia V 3 BMI(ECTS)-D Manager Informatics V 3

 Page updated 14.6.2019 17:52:56, semester: Z,L/2020-1, L/2018-9, Z,L/2019-20, Send comments about the content to the Administrators of the Academic Programs Proposal and Realization: I. Halaška (K336), J. Novák (K336)