secondary education university engineering greg burnham stephanie foster estacado high school...
TRANSCRIPT
Secondary EducationUniversity Engineering
Greg Burnham
Stephanie Foster
Estacado High School
Richard Gale
Texas Tech
What Gap?
Typically find standards based testing in high school
Multiple choice
Fixed format
A ‘right’ answer and some wrong ones
Most university engineering is open-endedLots of ways to succeed
Managing constraints is important
‘optimum’ rather than ‘right’
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Curriculum Alignment
State of Texas TEKS generally
STARR geared toward application of skills
Science – Most Science TEKS 2 and 3 application, real world technology, measurement, interpretation plus content
Math – Underlying process, problem solving in everyday process, mathematic representations and models, transformations of sine and cosine functions
Cscope and specific curriculum contain application of real world technology in their specificity
RoboticsMust figure out how to apply theory
Which theory?
What level of rigor?
Always have constraintsTime
Money
People
Availability of material
Team organization Appreciation for diversity
Logistics
Standards
Problem solving behaviors
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What are we doing today?
Issues with building a robot in our workshop
Programming is both overrated and underappreciated
Electronics requires ‘specialists’
NOT
You can take this stuff home with you
Extremely useful in all robotics programs
You can apply it to a wide range of problem solving exercises – www.ni.com – will lead you to a wealth of chat rooms, bulletin boards, tutorials, educational resources
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AgendaWe will forego loading the sw (20-30 minutes) but here’s how you do it
Plug and play – pulls up a panel of instruments immediately
DMM – adventures with Ohm’s Law
General audio analysis with Elvis – electronics laboratory virtual instrumentation system
Programming in LabVIEW – input, manipulation, analysis, output of complex electrical signals
Take home – MyDAQ, software, solar cell, LabVIEW for Education
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Adventures in Ohm’s Law
Ohm’s Law V = IR
Applications for physics classroom
Bread board circuit –9V battery and clip with leads, resistors and jumpers
DMM – voltage probes
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Adventures in Ohm’s Law
Select Ohm’s on DMM front panel
Press run arrow
Measure the resistance of three resistors and record your values
Calculate the total resistance of the three in series
Rtotal = R1 + R2 + R3
Calculate the total resistance of the three in parallel
1/Rtotal = 1/R1 + 1/R2 + 1/R3
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Adventures in Ohm’s LawDraw a series circuit and assemble it in the bread board and check
A possible series circuit (red and black out to battery clip
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Adventures in Ohm’s LawDraw a parallel circuit and assemble it in the bread board and check
Possible parallel circuit on the bread board
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Audio Analysis with Elvis Oscilloscope to graph the voltage of music
Go to my music and pick something to play be sure it is on repeat or looped
Pull up the NI Elvis, click scope
plug in audio cord into headphones in computer and audio in on myDAQ
Give the scope the following constraints.
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Audio Analysis with Elvis Oscilloscope to graph the voltage of music
Click RUNGraphs the
frequencies of music
played
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Piezo MyDAQ
MyDAQ wired with a Piezo Transistor
Light green AO0
Yellow AO A ground
Orange AO+ Dark green AO-
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Audio Analysis with Elvis Using function generator and Piezo to play an octave and scope to graph
Start Frequency 1024
Stop Frequency2048
Click Sweep This is 2 octaves
above middle C
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Audio Analysis with Elvis Click Scope to bring up a graph of the scale
This is a simple way to
generate a sine wave and
shows that amplitude
is sound volume and
frequency is pitch
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Audio Analysis with Elvis Oscilloscope and Function Gen together
Goal is to show an amplitude change on the oscilloscope
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Audio Analysis with Elvis Oscilloscope and Function Gen together
Goal is to show an amplitude change on the oscilloscope
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Audio Analysis with Elvis Oscilloscope and Function Gen together
When changing the trigger or the start point
Shows the relationship between frequency and period
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Audio Analysis with Elvis Oscilloscope and Function Gen together
When changing the trigger or the start point, changing the period to 500 us
A Little More General
Each of the instruments we used so far are programs created in a language called LabVIEW
Virtual Instruments
Highly visual – drag and drop
Customized for a particular application
The hardware allows for the user to create his or her own
Limitations of off the shelf VI’sThey’re always doing what someone else wanted
They’re really good but not exactly right for you
Build your own
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Who, me?
RelaxTons of open source applications
Multiple chat rooms and user groups
Built in tools
The challengeFind something pretty close to what you want
Dig into it far enough to figure out how it works
Modify it to your application
You can do this
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