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MECH3424 Measurement and Instrumentation

Credit
6 points
Offering
AvailabilityLocationModeFirst year of offer
Not available in 2022UWA (Perth)Face to face
Details for undergraduate courses
  • Level 3 core unit in the Automation and Robotics Engineering; Biomedical Engineering; Mechanical Engineering major sequences
Content
This unit covers concepts relating to measurement and noise, enabling students to understand the issues required to achieve high-quality measurements. Topics include accuracy, precision, repeatability, calibration, uncertainty and signal noise. Measurements from a range of sensors (mechanical, optical, electrical) are introduced and subsequent signal conditioning (operational amplifiers, instrumentation amplifiers) are addressed with the aim of maximising signal quality. Statistical methods are discussed to better understand noise processes and how signal noise can be minimised. Methods to improve signal quality (signal to noise ratio) are discussed. Measurement signal and noise are analysed in both the time and frequency domain to better understand the connection between two domains and the importance of measurement bandwidth. Sampling is reviewed to understand the impact of moving from continuous-time (CT) and discrete-time (DT), including discussion of the Nyquist rate and aliasing. The conversion between the analogue to digital domains including CT-DT, system transfer functions, spectral analysis (discrete Fourier transform, discrete-time Fourier transform) and the construction of finite and infinite impulse response filters to reduce noise is discussed.
Outcomes
Students are able to (1) explain measurement concepts; (2) use information from instrumentation specifications to design experiments; (3) achieve high-quality measurements using appropriate collection and data manipulation methods; (4) present data numerically and in graphical form in a manner that is clear and concise and includes the uncertainty associated with the measurement; (5) move between the time and frequency domains to interpret measurements and minimise signal noise; (6) assess instrumentation characteristics that affect data collection and measurement; and (7) analyse data in a manner that includes the uncertainty associated with the measurement.
Assessment
Indicative assessments in this unit are as follows: (1) laboratories; (2) quizzes; and (3) final examination. Further information is available in the unit outline.
Unit Coordinator(s)
Associate Professor Adrian Keating
Unit rules
Prerequisites:
And CITS2401 Computer Analysis and Visualisation (ID 343) ENSC2004 Engineering Mechanics (ID 7437) And MATH1012 Mathematical Theory and Methods (ID 6013) And Course Enrolment ( BH011 Bachelor of Engineering (Honours) (ID 25) Or CB006 Bachelor of Engineering (Honours)/ Bachelor of Commerce (ID 6) Or CB004 Bachelor of Engineering (Honours)/ Bachelor of Science (ID 4)
Co-requisites:
Nil
Incompatibility:
MECH4424 Measurement and Noise (ID 2625)
Contact hours
lectures/information sessions: 3 hours per week; practical classes: 1 hour per week; labs: 2 hours per week
Note
It is recommended that students are familiar with the Microsoft Excel spreadsheet program as Excel will be used to perform calculations in assessments/labs.
  • The availability of units in Semester 1, 2, etc. was correct at the time of publication but may be subject to change.
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  • Unit readings, including any essential textbooks, are listed in the unit outline for each unit, one week prior the commencement of study. The unit outline will be available via the LMS and the UWA Handbook one week prior the commencement of study. Reading lists and essential textbooks are subject to change each semester. Information on essential textbooks will also be made available on the Essential Textbooks. This website is updated regularly in the lead up to semester so content may change. It is recommended that students purchase essential textbooks for convenience due to the frequency with which they will be required during the unit. A limited number of textbooks will be made available from the Library in print and will also be made available online wherever possible. Essential textbooks can be purchased from the commercial vendors to secure the best deal. The Student Guild can provide assistance on where to purchase books if required. Books can be purchased second hand at the Guild Secondhand bookshop (second floor, Guild Village), which is located on campus.