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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DMM PortsRed to HI on V Ω side and black to COM

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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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MyDAQ Input/Output Ports

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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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Get started here

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Get started here

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