Engineering is fun in the instrumentation laboratory Angla

Engineering is fun in the instrumentation laboratory Angéla Váradi, Tamás Bodolai Department of Electrical and Electronic Engineering University of Miskolc, Hungary elkvsza@uni-miskolc. hu 14 October 2009 Global Colloquium on Engineering Education, Budapest 1

Teaching and research areas of the Department of Electrical and Electronic Engineering Electrical Engineering Electronics Measurement and Instrumentation • • • 14 October 2009 Analysis of high power network disturbances Flicker analysis Efficiency of the electrical energy consumption Electrical drive diagnostics Analogue electronics Power electronics Car electronics Development of instrumentation systems for mechatronic equipment Remote controlled instrumentation systems Global Colloquium on Engineering Education, Budapest 2

Teaching activity of the Department of Electrical and Electronic Engineering 14 October 2009 Level Engineering Semester Assistant Mechanical Electrical 4 BSc Electrical Mechanical Energetics Information Technology Mechatronics 7 MSc Mechanical Information Technology (Electrical is prepared for accreditation) 4 Ph. D 6 Global Colloquium on Engineering Education, Budapest 3

14 October 2009 Measurement education Measurement evolution Two opposing trend Global Colloquium on Engineering Education, Budapest 4

Curricula in BSC Electrical Engineering 14 October 2009 Global Colloquium on Engineering Education, Budapest 5

Metrology courses in BSC Electrical Eng. curriculum 14 October 2009 Global Colloquium on Engineering Education, Budapest 6

Introductory course 1 hour theory, 2 hours laboratory, 1 hour Lab. View Measuring errors, standards Handling of basic instruments, DMM, FG, Oscilloscope Soldering practice Lab. View basics (1 hour per week) First steps in Lab. View learning – student solution – not perfect, but working 14 October 2009 Global Colloquium on Engineering Education, Budapest 7

Measurement Science 2 hours theory, 1 hour laboratory Statistical analysis of measurement errors Basic theory of computer-aided instrumentation Lab. View solutions for data analysis 14 October 2009 Global Colloquium on Engineering Education, Budapest 8

Practice in computer-aided instrumentation 3 hour laboratory Data acquisition Sensors 14 October 2009 Global Colloquium on Engineering Education, Budapest 9

Measurement systems 1 hour theory, 2 hours laboratory Remote controlled instrumentation Industrial test methods 14 October 2009 Global Colloquium on Engineering Education, Budapest 10

Test and diagnostics 4 hours per week Project based team work (optional subject for certain specialisation) 14 October 2009 Global Colloquium on Engineering Education, Budapest 11

Laboratory load – Students motivation 200 student per semester – 2 hours per week – 14 students per group in average (2009 -2010 academic year 1 st semester: 310 students in 23 groups; 61 hours laboratory practices per week) Changing the concept What we teach? 14 October 2009 How we teach? Global Colloquium on Engineering Education, Budapest 12

Student attitudes at the laboratory ? Your experiences? 14 October 2009 Global Colloquium on Engineering Education, Budapest 13

Student attitudes at the laboratory • 5* students • „Oh. End of the seminar? Can I stay a bit? ” Researcher students • „The neutral mass” • „What is the minimum level? ” • „I don’t mind”! Most of them are not able to connect or not interested in connecting the real life and the science 14 October 2009 Global Colloquium on Engineering Education, Budapest 14

Student attitudes at the laboratory What is the ratio in your experiences? 14 October 2009 Global Colloquium on Engineering Education, Budapest 15

Student attitudes at the laboratory • 5* students 2% • „Oh. End of the seminar? Can I stay a bit? ” 10% • „The neutral mass” ~40% • „What is the minimum level? ” 30% • „I don’t mind”! 20% 14 October 2009 Global Colloquium on Engineering Education, Budapest 16

Importance of the task definition • Build a vibration sensing circuit using xxx type piezoelectric accelerometer and charge amplifier. Develop measuring software suitable for continuous data acquisition and signal display. Using FFT analysis define frequency spectrum of the vibration signal. ? 14 October 2009 Global Colloquium on Engineering Education, Budapest 17

Importance of the task definition • Build a vibration sensing circuit using xxx type piezoelectric accelerometer and charge amplifier. Develop measuring software suitable for continuous data acquisition and signal display. Using FFT analysis define frequency spectrum of the vibration signal. • Build a sensing circuit and develop measuring and analyzing software suitable for display your mobile phone’s vibration-call and define 3 frequency components with the highest amplitude level. 14 October 2009 Global Colloquium on Engineering Education, Budapest 18

Student solution 14 October 2009 Global Colloquium on Engineering Education, Budapest 19

Measurements using capacitor microphone 14 October 2009 Global Colloquium on Engineering Education, Budapest 20

Student solution 14 October 2009 Global Colloquium on Engineering Education, Budapest 21

Test and Diagnostic – the project based course • Last semester of the study • Team work (4 students per team) • Team leader – the best project proposal • Realization and presentation • Self evaluation 14 October 2009 Global Colloquium on Engineering Education, Budapest 22

Examples from the students projects Cooling efficiency diagnostic of different materials used for power LEDs 14 October 2009 Global Colloquium on Engineering Education, Budapest 23

Examples from the students projects Development of light intensity sensor for control of window shutter 14 October 2009 Global Colloquium on Engineering Education, Budapest 24

Experiences • Self-grouping is not successful – rearrangement • Project proposals include too much work for the defined time limit • Students enjoy the work (including electrical and mechanical tasks) • Self-evaluation is mostly fair • Half of the projects is part of the leader’s diploma work 14 October 2009 Global Colloquium on Engineering Education, Budapest 25

Remote controlled laboratory at the DEEE Specialties: 1. Open for all Internet users (web browser only necessary) 2. The user is an active participant during the operation 14 October 2009 Global Colloquium on Engineering Education, Budapest 26

Remote controlled laboratory at the DEEE Web camera Compact Fiel. Point Linear displacement sensor ciruit 14 October 2009 DC motor test Global Colloquium on Engineering Education, Budapest Lab. View Power LED test 27

http: //193. 6. 7. 165/c. FPe. html 14 October 2009 Global Colloquium on Engineering Education, Budapest 28

Motivation methods 1. Task definition – from the real life 2. Team work – learning by doing 3. Internet based system – playing-doing-learning ? 14 October 2009 Global Colloquium on Engineering Education, Budapest 29

Conclusions Courses in metrology are practice oriented subjects, requiring activity and creativity of students. New practical experiments and teaching methods worked out at our department encourage students, increase their motivation. Project based course integrates theoretical knowledge and practical abilities, students solve real-life problems, while they learn to work in team. The remote controlled laboratory provides wide range of educational utilization, particular focus points depend on the specialization and the year of the study. 14 October 2009 Global Colloquium on Engineering Education, Budapest 30

Thank you for your kind attention! Questions? Angéla Váradi Department of Electrical and Electronic Engineering University of Miskolc, Hungary elkvsza@uni-miskolc. hu 14 October 2009 Global Colloquium on Engineering Education, Budapest 31