Computer Based Measurements

ID: 3425
Course type: scientific and vocational
Course coordinator: Miljić L. Nenad
Lecturers: Miljić L. Nenad
Contact: Miljić L. Nenad
Level of studies: Ph.D. (Doctoral) studies – Mechanical Engineering
ECTS: 5
Final exam type: project design

Lectures

Goal

The aim of the course is to provide comprehensive insight into the digital acquisition systems (DAQ), measurment systems and, mainly, their usage in the field of testing of systems covered in the Mechanical Engineering; To introduce students the world of virtual instrumentation and graphical programming environment (LabVIEW) which is dedicated to development of DAQ applications. To gain experience on 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 DAQ software developing and testing. This course is, mainly, intended for students not closely familiar with the computer based measurement techniques at level needed for PHD studies, as well for those who are willing to extend their knowledge in this area.

Outcome

Ability to integrate sensors and DAQ hardware in measurement chain in order to fulfill specific requirements in the field of mechanical engineering system testing & measurements. Ability to build and test software application (LabVIEW virtual instruments) for measurement and automation of various mechanical engineering systems. Practical knowledge in computer based measurements of fundamental engineering data

Theoretical teaching

Architecture and basic principles of data acquisitions systems (DAQS); Definition and clarification of the fundamental terms in the field of measurement technique. Fundamentals of signal filtering (Analog & Digital); Hardware components of the DAQ module –DAQ device; Basic principles of digital data acquisition; DAQ based measurement chaines for the measurement of a temperatures, pressures, forces, torques, speed, acceleration,...; Specific issues on digital input/output of DAQ devices; Counters and their usage for counting of discrete events and position measurement; Communications standards in measurement instrumentation (RS-232, RS-422/485, IEEE-488 (GPIB));

Practical teaching

Introduction to the Virtual Instrumentation (VI) and LabVIEW development environment; Data flow in VI; Troubleshooting and Debugging Vis; Implementing a VI; Managing Hardware resources (Low and High-Level File I/O ); Common Design Techniques and Patterns; Synchronization Techniques; Event Programming; Error Handling; Controlling the User Interface ( VI Server Architecture; Control references); File I/O Techniques ; Improving an Existing VI; Creating and Distributing Applications; Student Project: Building a DAQ with given requirements; *)National Instruments (NI) Labview courses “Core 1” & “Core 2” are incorporated in 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 LabVIEW Academia agreement.

Attendance requirement

No particular requirements for attending this course

Resources

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

Assigned hours

Total assigned hours: 65

Active teaching (theoretical)

New material: 30
Elaboration and examples (recapitulation): 20

Active teaching (practical)

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

Knowledge test

Review and grading of calculation tasks: 0
Review and grading of lab reports: 0
Review and grading of seminar papers: 0
Review and grading of the project: 15
Test: 0
Test: 0
Final exam: 0

Knowledge test (100 points total)

Activity during lectures: 0
Test/test: 0
Laboratory practice: 25
Calculation tasks: 0
Seminar paper: 0
Project: 45
Final exam: 30
Requirement for taking the exam (required number of points): 60

Literature

Labview Core 1 & 2 Course Manual & Exercises, National Instruments; Robert H. King:Introduction to Data Acquisition with LabVIEW,McGraw-Hill,2009,; Fernando Puente León, Uwe Kiencke:Messtechnik: Systemtheorie für Ingenieure und Informatiker, Springer, 2011