Academic year/semester: 2024/25/1

ECTS Credits: 6

Available for: Only for the faculty’s students

Lecture hours: 1
Seminarium:0
Practice: 0
Laboratory: 2
Consultation: 0

Prerequisites: Measurements I.

Course Leader: Dr. Károly Bretz

Faculty: Kandó Kálmán Faculty of Electrical Engineering, 1084 Budapest, Tavaszmező utca 17.

Course Description:
To attain the measuring principles, necessary for measuring basic electrical quantities. Knowledge of construction and handling of most important electrical measuring instruments, interpretation of their technical specification. Knowledge, necessary to select optimal measuring methods and instruments.

Competences:

Topics:
Thematics:
Digital methods of frequency, period and time measurement. Sources of errors
Measuring phase shift. Construction of digital counter equipments, time base.
DC and AC power basics
Power mesurement methods: ammeter-voltmeter method, electrodynamic instrument, electronic power meters. Electric energy measurement, watt-hour meter.
Basics of impedance measurement. AC bridges. Electronic impedance measurement methods, digital method.
Sampling modes in oscilloscopes. Digital Storage Oscilloscope: operation, blind time problem and solution modes. Logic analyzers: block-diagram, time or state-domain operation, display forms. Spectrum analyzers, operation, block-diagram, applications
Basics of DC power supplies: stabilization parameters, output limitation characteristics Construction of DC supplies, coupling methods.
Switching mode stabilizers. Power Factor Correction: problem, solution methods.
Transducers of non-electrical parameters: standard signal systems, energy distribution methods. Applications of electrical measuring non-electrical quantities. Sensors for temperature measurement.
Sensors of rotation speed, force, torque, displacement and light.
Trends in instrumentation and measurement. Basics of automatic measuring systems. Data aquisition systems.
Special software tools in automatic measurement.
Lab. practice thematics:
Measuring frequency and time
Impedance measurement I (measuring resistance)
Use of DSO I.
Power measurement
Impedance measurement II(measuring C and L)
Use of DSO II.
Temperature measurement
Strain gaus measurement
Repalacement
Optional measurement
Rotation measurement
Movement measurement
Repalacement
Independent measurement

Assessment: Visit of the lectures and the laboratory practice is obligatory. Conditions of the midyear grade: Laboratory practice part Students should write a test every weeks. There are two type of test: - „starter test”: 2 questions from new measurements starter question lists - „test for mark”: 5 questions from the previously measured themas The laboratory practice result is the mathematical average of the „test for mark” marks. You should retake every falid tests during the semester Lectures part During the semester we will write 3 tests. The test work contains 6 questions. The student get 1 points for every correct answers. The sum points must reach at least 7,2 points. At the end of the semester students should write an retake test for every tests. Midyear grade replacement In an examination period students should write an retake test from the faild tests. The maximum number of the retaken tests are 3.

Exam Types:

Compulsory bibliography: Dr. Horváth Elek: Méréstechnika jegyzet (1161) Lecture slides https://elearning.uni-obuda.hu/ Zsolt Markella: Measurement Laboratory 2/A https://elearning.uni-obuda.hu/ Zsolt Markella: Measurement Laboratory 2/B https://elearning.uni-obuda.hu/ Zsolt Markella: Measurement Laboratory 2/C https://elearning.uni-obuda.hu/

Recommended bibliography: Helfrick-Cooper: Modern Electronic Instrumentation and Measurement Techniques Chin: Elektronic Instruments and Measurements

Additional bibliography:

Additional Information: