Introduction to NI ELVIS K. Craig 1
Introduction to NI ELVIS
Dr. Kevin CraigGreenheck Chair
in Engineering Design&
Professor of Mechanical EngineeringMarquette University
Introduction to NI ELVIS K. Craig 2
DAQ What is DAQ?
DAQ (data acquisition) systems capture, measure, and analyze physical phenomena from the real world.
Light, temperature, pressure, and torque are examples of the different types of signals that a DAQ system can measure.
Data acquisition is the process of collecting and measuring electrical signals from sensors and test probes, and sending them to a computer for processing.
Data acquisition may also include the output of analog or digital control signals.
Introduction to NI ELVIS K. Craig 3
Virtual Instrumentation Virtual Instrumentation is defined as the combination of
measurement and control hardware and application software with industry-standard computer technology to create user-defined instrumentation systems.
Virtual Instrumentation provides an ideal platform for developing instructional curriculum and conducting scientific research. Tools must be flexible and adaptable, both in instructional labs,
where experiments combine measurement, automation, and control, but also in research environments, where the needs are unpredictable.
Modularity, and hence new functionality, and economy are important attributes.
Introduction to NI ELVIS K. Craig 4
Traditional Instrumentation
Introduction to NI ELVIS K. Craig 5
Engineering System Investigation Process
PhysicalSystem
SystemMeasurement
MeasurementAnalysis
PhysicalModel
MathematicalModel
ParameterIdentification
MathematicalAnalysis
Comparison:Predicted vs.
Measured
DesignChanges
Is The ComparisonAdequate ?
NO
YES
START HERENI ELVIS
LabVIEW
Introduction to NI ELVIS K. Craig 6
NI ELVIS II
Design and Prototyping Platform for Engineers
Introduction to NI ELVIS K. Craig 7
Introduction to NI ELVIS K. Craig 8
Introduction to NI ELVIS K. Craig 9
Introduction to NI ELVIS K. Craig 10
Introduction to NI ELVIS K. Craig 11
Introduction to NI ELVIS K. Craig 12
Variable Power Supply
Introduction to NI ELVIS K. Craig 13
Digital Multimeter
Introduction to NI ELVIS K. Craig 14
Function Generator
Introduction to NI ELVIS K. Craig 15
Arbitrary Waveform Generator
Introduction to NI ELVIS K. Craig 16
Oscilloscope (Time-Response Plots)
Introduction to NI ELVIS K. Craig 17
Bode Analyzer (Frequency-Response Plots)
Introduction to NI ELVIS K. Craig 18
DSA Dynamic Signal Analyzer
Introduction to NI ELVIS K. Craig 19
Impedance Analyzer
Introduction to NI ELVIS K. Craig 20
Introduction to NI ELVIS K. Craig 21
Introduction to NI ELVIS K. Craig 22
Introduction to NI ELVIS K. Craig 23
Time Domain Frequency Domain VI
Introduction to NI ELVIS K. Craig 24
Introduction to NI ELVIS K. Craig 25Indicates Continuity
ELVIS Breadboard
Introduction to NI ELVIS K. Craig 26
ELVIS Exercises Measurement of Component Values with the DMM
Resistor (1.0 k and 2.2 k) Measure component values using the DMM by
connecting the components across the Banana A and Banana B inputs.
Resistors in Series and Parallel Building a Circuit and Measuring Voltage and Current
using the DMM Measure Voltage Source and Current Through Single
Resistor Voltage Divider Circuit Current Divider Circuit
Introduction to NI ELVIS K. Craig 27
Measuring Resistance
Introduction to NI ELVIS K. Craig 28
Introduction to NI ELVIS K. Craig 29
Resistors in Series
Introduction to NI ELVIS K. Craig 30
Resistors in Parallel
Introduction to NI ELVIS K. Craig 31
eout
ein
R2
R12
out in1 2
Re eR R
= +R2R1
Iin
Iout
I1 I2
21 in
1 2
12 in
1 2
RI IR RRI I
R R
= += +
in 1 2 outI I I I= + =
Voltage Divider
Current Divider
Introduction to NI ELVIS K. Craig 32
Using the DMM to Measure Voltage
Using the DMM to Measure Current
Banana A
Banana B
Banana B Banana C
Introduction to NI ELVIS K. Craig 33
DC Voltage Divider
Introduction to NI ELVIS K. Craig 34
Measuring Current through a Resistor5voltsi 0.005122A
0.9762k= =
Introduction to NI ELVIS K. Craig 35
Current Divider
( )
21
1 2
Ri iR R
975.90.0073592168.7 975.9
0.002284A
= + = +
=
5voltsi 0.007359A0.6794k
= =
Introduction to NI ELVIS K. Craig 36
Time Response of a Voltage Divider Response to a Square Wave Input (Step Response)
and Sine Wave input ELVIS Connections
Circuit Input to FGEN FGEN to Analog Input Signal AI 6+ Measured Signal to Oscilloscope AI 7+ Oscilloscope AI 7- and AI 6- to DC Ground Circuit Ground to DC Ground
Introduction to NI ELVIS K. Craig 37
Function GeneratorFGEN
DC Ground
OscilloscopeChannel AI 7+
OscilloscopeChannels AI 7- and AI 6-
Time Response
OscilloscopeChannel AI 6+
Introduction to NI ELVIS K. Craig 38
Voltage Divider Time Response
Introduction to NI ELVIS K. Craig 39
Introduction to NI ELVIS K. Craig 40
Introduction to NI ELVIS K. Craig 41
Frequency Response (Bode Plot) of a Voltage Divider ELVIS Connections
FGEN to Circuit Input Measured Signal to Analog Input Signal AI 0+ FGEN to Analog Input Signal AI 1+ DC Ground to Analog Input Signals AI 0- and AI 1-
and circuit ground
Introduction to NI ELVIS K. Craig 42
Function GeneratorFGEN
DC Ground
Analog Input SignalAI 0+
Analog Input SignalsAI 0- and AI 1-
Frequency Response
Analog Input SignalAI 1+
Introduction to NI ELVIS K. Craig 43
Voltage Divider Frequency Response
Introduction to NI ELVIS K. Craig 44
Semi-Log Paper1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 2.0
10 20 30 40 50 60 70 80 90 1001.0 1.301 1.477 1.602 1.699 1.778 1.845 1.903
1.9542.0
log10
Introduction to NI ELVIS K. Craig 45
Introduction to NI ELVISDAQVirtual InstrumentationSlide Number 4Slide Number 5Slide Number 6Slide Number 7Slide Number 8Slide Number 9Slide Number 10Slide Number 11Slide Number 12Slide Number 13Slide Number 14Slide Number 15Slide Number 16Slide Number 17Slide Number 18Slide Number 19Slide Number 20Slide Number 21Slide Number 22Slide Number 23Slide Number 24Slide Number 25ELVIS ExercisesSlide Number 27Slide Number 28Slide Number 29Slide Number 30Slide Number 31Slide Number 32Slide Number 33Slide Number 34Slide Number 35Slide Number 36Slide Number 37Slide Number 38Slide Number 39Slide Number 40Slide Number 41Slide Number 42Slide Number 43Slide Number 44Slide Number 45