The course aims at introducing the notions required for electronic measurements. The course deals with basic concepts on electronic measurement science, and corresponding measurement uncertainty. The basic analog measuring instruments and their metrological characteristics will be introduced. The student will be able to design his measuring sections, to choice the most suitable meaduring tools, measuring method, end perform the measurement along with the corresponding uncertainty estimation.
To provide knowledge about digital instrumentation and Automatic Measurement Systems
Unit 1: Basic measurement theory (10)
Quantity, Measure, Measurement, Measurement methods: direct and indirect measurement methods, Null and deflection measurement methods, Indication, Metrological characteristics of a measuring instrument, calibration diagram, Calibration curve and instrumental measuremnt uncertainty, sensitivity, resolution, hysteresis, precision and accuracy, repeatability and reproducibility.
Unit 2: Uncertainty of measurement (14)
GUM, Uncertainty of measurement, Type A Type B uncertainties, Combanied standard uncerainty: uncorrelated input quantities and correlated input quantities, expanded uncertainty.
Unit 3: DC masuring instruments and DC measuring methods (14)
Analog measuring instruments, the permanent magnet-moving coil galvanometer, milliammeter, millivoltmeter, ammeter, voltmeter, zero-center galvanometer, accuracy class, metodo volt-amperometrico, voltmeter-ammeter method and corresponding loading effects, Weathstone bridge circuit, Substitution methods, Potentiometer method for e.m.f. and current measurement, Clark's potentiometer, Kelvin-Varley potentiometer, direct reading potentiometer.
Unità 4: AC measuring instruments (12)
AC-DC converters: half-wave and full-wave average reading, half-wave and full-wave peak reading, and true rms-reding rectifiers, Analog Oscilloscopes, Cathoide ray tube and its senibility, horizontal and vertical channels, time base, triggered sweep.
Part I: Digital Instrumentation
A/D conversion, sampling, quantization
Digital instruments (Time, frequency, Voltage) (18 hours)
A/D and D/A converters (Numeric ramp, linear ramp, follower, double ramp, flash, successive approximation)
Digital scope
Spectrum analyzer
Autmatic Measurement Systems
Data Acquistion Systems
Distributed measurment systems (IEEE488.2)
LabVIEW
Part II: Methods (9 hours)
Part III: Practical Sessions (23 hours)
1) E. Doebelin, "Strumenti e metodi di misura", Mc Graw Hill
2) E. Doebelin, "Measurement systems", McGraw Hill
3) G. Iuculano D Mirri, "Misure Elettroniche", CEDAM
4) J. Carr, "Elements of electronic instrumentation and measurements" 3 Ed, Prentice Hall
5) Norma UNI 4546-1984, "Misure e misurazioni"
6) Norama UNI CEI ENV 13005:2000 "Guida all'espressione dell'incertezza di misura"
7) Teacher's notes
G. Zingales, “Misure elettriche: metodi e strumenti”, UTET, Torino, 1993
G. Iuculano, D. Mirri, “Misure Elettroniche”, CEDAM 2002
Tutorial LabVIEW
Tutorial DAQ
Tutorial GPIB