Sensors and Measurement Transducers

Higher education teachers: Zajec Peter

Subject description

Prerequisits:

• The entry requirements are specified by the Faculty of Electrical Engineering.
• To attend the written exam, the candidate has to complete laboratory work and write the associated reports.

Content (Syllabus outline):

a) To emphasize the significance of sensors in power engineering and measurement transducers in mechatronic systems.

b) Transducers: basic concepts and definitions, measuring chain and the definition of its components, ideal / real measurement transducer, the static characteristics, dynamic characteristics, influence quantity, reliability and security.

c) Physical description of thermal-electrical conversion, optical-electrical, mechanical-electrical, magnetic-electric, chemical-electrical conversion and other geometric material changes being exploited in modern measuring articles.

d) Measurement of mechanical and process variables for applications in propulsion systems and mechanical structures. Measurement:

• geometrical quantities such as: expansion, linear displacement, a rotation angle, speed and angular speed, the thickness of layers,
• force, pressure (liquid and mechanical gauges with resistance band, inductive, capacitive sensor) and the torque and power,
• mass,
• volumetric and mass flow of fluids and sandy materials,
• temperature (thermistors, resistance Pt sensors, thermocouple, semiconductor sensors)
• chemical and other properties of material,
• proximity switches.

e) Galvanic separation of measuring circuits in the field of control electronics.

f) Matching circuits, electronic evaluation of signals from voltage, current, position, velocity and acceleration gauges. Structure of modern measuring systems, the use of virtual instruments.

Objectives and competences:

To establish competent background in the field of sensoric: to be familiar with selection, design and evaluation of different sensors capable of measuring diverse (non)-electrical quantities.

Intended learning outcomes:

To gain knowledge on sensors, transducers and signal conditioning of physical quantities usually found in electric motor drives, control and power electronics.

Learning and teaching methods:

• lectures
• tutorials

Study materials

1. D. Fefer, A. Jeglič: Senzorji in pretvorniki, Univerza v Ljubljani, Fakulteta za elektrotehniko, 2006.
2. P.Zajec, zapiski predavanj
3. J. Turner, Automotive Sensors. Momentum Press, 2009.
4. E. Ramsden, Hall-Effect Sensors: Theory and Application. Newnes, 2011.
5. P. P. L. Regtien, Sensors for Mechatronics. Elsevier, 2012.
6. R.Pallás-Areny, J.G.Webster: Sensors and signal conditioning, New York, Wiley, 2001.
7. H. Bernstein: Sensoren und Messelektronik, München, Pflaum, 1998.