Sensors and Computer Based Measurements

• Biomedical Engineering, Semester 2, position 4
• Aviation, Semester 2, position 4
• Dizajn u mašinstvu, Semester 2, position 4
• Industry Engineering, Semester 2, position 4
• Motori SUS, Semester 2, position 4
• Weapon Systems, Semester 2, position 4
• Mechanics, Semester 2, position 4

The aim of the course is to provide comprehensive insight into the sensors and digital acquisition systems (DAQ), measurement systems, and mainly, their usage in the field of systems testing in the area of Mechanical Engineering; To introduce students to the world of virtual instrumentation and graphical programming environment (LabVIEW) which is dedicated to the development of DAQ applications. To gain experience in functioning and using DAQ systems through numerous, real-world examples. To get closer acquaintance with the sensors, and digital acquisition software & hardware, in general, and methods of DACQ software development and testing.

Ability to integrate sensors and DAQ hardware in measurement chains in order to fulfill specific requirements in the field of mechanical engineering system testing & measurements. Ability to build and test software applications (LabVIEW virtual instruments) for measurement and automation of various mechanical engineering systems. Practical knowledge in computer-based measurements of fundamental engineering data. Supplied basic knowledge and practice in the LabView environment sufficient to apply for a test and potentially get a degree of certified CLAD programmer.

Measurement Techniques; Measurement of Non-Electrical Quantities (Sensors and Sensor Systems, Displacement and Angles, Speed, Acceleration, Force, Torque, Pressure, Mass, Temperature, Flows, Signal Conditioning); Digital Measurement Techniques (Discretisation of Amplitude and Time, Sampling Theorem, Quantization, A/D, and D/A Converters, Measurement of Frequency, Counters); Architecture and basic principles of data acquisitions systems (DAQS); Measurement Errors and Statistics; Static and Dynamic Behavior of Sensors.

Introduction to the Virtual Instrumentation (VI) and LabVIEW development environment; Data flow in VI; Troubleshooting and Debugging Vis; Implementing a VI; File I/O Techniques; Common Design Techniques and Patterns; Managing Hardware resources; Synchronization Techniques; Event Programming; Error Handling; Controlling the User Interface; Improving an Existing VI; Practice labs with various sensors and measurement chains building tasks. Student Project: Building a DAQ with given requirements (complied with the Student's module syllabus); *National Instruments (NI) Labview courses “Core 1” & “Core 2” are incorporated into the theoretical and practical teaching of this course. This course is in compliance with the “LabVIEW Academia” program and therefore offers students all benefits stated in the LabVIEW Academia agreement.

No particular requirements for attending this course

Handouts: N. Miljić, Computer Based Measurements & Virtual Instrumentation. DACQs: National Instruments USB 6008, MyDAQ, PXI. Graphical Development Environment: National Instruments LabView 2010 with modules and toolkits (LVA package) Auxiliary platforms: Demo board for simulation of analog and digital signals; Universal Amplifying / Conditioning board for various sensors; Driver board for DC and step motors.

Total assigned hours: 75

New material: 20
Elaboration and examples (recapitulation): 10

Auditory exercises: 10
Laboratory exercises: 16
Calculation tasks: 0
Seminar paper: 0
Project: 3
Consultations: 0
Discussion/workshop: 1
Research study work: 0

Review and grading of calculation tasks: 4
Review and grading of lab reports: 3
Review and grading of seminar papers: 0
Review and grading of the project: 5
Test: 0
Test: 3
Final exam: 0

Activity during lectures: 0
Test/test: 45
Laboratory practice: 0
Calculation tasks: 5
Seminar paper: 0
Project: 10
Final exam: 40
Requirement for taking the exam (required number of points): 42

Holman, J. P.: Experimental methods for engineers. McGraw-Hill, 2007. ISBN 0071181652; Labview Core 1 & 2 Course Manual & Exercises, 2012, National Instruments ; J. Hoffmann: Taschenbuch der Messtechnik, Carl Hanser Verlag GmbH & Co. KG, 2007, ISBN-13 978-3446409934; Robert Bishop: LabVIEW 2009 Student Edition, Prentice Hall, 2010, ISBN13- 9780132141291; J. Niebuhr, G. Lindner: Physikalische Messtechnik mit Sensoren, Vulkan-Verlag GmbH, 2005, ISBN-10 9783835631519