IEEE Teacher In-Service Program

Activities Including Ship the ChipSail AwayHand BiometricsSort It Out

IEEE TeacherIn-Service ProgramGuayaquil, Ecuador10 – 11 November 2009

Christopher LesterCoralí Ferrer

Actividad 1:Transportando Papitas Fritas(Ship the Chip)Package design and the engineering behind shipping productssafely

Ship the Chip

Learn about engineering product planning and design.

Learn about meeting the needs of society.

Learn about teamwork and working in groups.

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Objectives

Ship the Chip

Manufacturing Engineering Package design, manufacture and test Material properties and selection

Real world application of mathematics

Teamwork

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Students will learn…

Ship the Chip

Design a package that will securely hold a potato chip and protect it from breaking when dropped

Construct the lightest package to get the highest score. Overall score based on:

Weight Intactness Score Volume

5

The Challenge

Ship the Chip

1. Sketch a design on the worksheet2. Construct a model of your package3. At a test station, drop the package from a height of 1.5 meters4. Open your package and examine the chip5. Calculate and record your score6. Redesign and reconstruct your package

Extra materials available at testing tables7. Label your package with Table # and Team Name8. Submit your worksheet and package to the Test Team for overnight

testing

6

Procedure

Ship the Chip

Cardboard – 22 cm x 28 cm 10 Craft sticks 6 Cotton Balls String – 91 cm Plastic wrap – 1 sheet of 22 cm x 28 cm 10 Toothpicks Foil – 1 sheet of 22 cm x 28 cm Paper – 1 sheet of 22 cm x 28 cm 1 Mailing label 1 Potato Chip

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Materials

Ship the Chip

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Tools and Accessories

Ship the Chip

Intactness score : 100: like new, perfect 50 : slightly damaged; cracked but still in one piece 25 : broken in 2 - 5 pieces 5 : broken in 6-20 pieces 1 : broken into more than 20 pieces; crumbled

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Scoring Intactness score

Overall Score = [weight in kg] x [volume in cm3]

Estimate Volume as Length x Width x Height

Ship the Chip

1. Dibuja el diseño del empaque en la hoja de trabajo2. Confecciona tu empaque3. En la estación de prueba, suelta el empaque a una altura de 1.5

metros.4. Abre el empaque y examina la papa 5. Calcula y anota tu puntaje6. Rediseña tu empaque

Hay materiales adicionales en las mesas de prueba7. Etiqueta tu empaque con el número de mesa y el nombre de tu

equipo8. Entrega tu hoja de trabajo y empaque al Equipo para pruebas

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Procedimiento

Ship the Chip

Puntaje de integridad: 100: como nueva, perfecta 50 : levemente dañada; trizada pero aún entera 25 : rota en 2 a 5 trozos 5 : rota en 6 a 20 trozos 1 : rota en más de 20 trozos; en migajas

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Puntuación Puntaje de integridad

Puntaje total = [masa en kg] x [volumen en cc]

Estime volumen como longitud x anchura x altura


Actividad 2:Navegando(Sail Away)Naval architecture, boats, sails and the process of designingto specifications

Sail Away

Learn about marine engineering and sailing principles.

Learn about engineering product planning and design.

Learn about meeting the needs of society.

Learn about teamwork and working in groups.

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Objectives

Sail Away

Principles of watercraft engineering

Design process and problem solving techniques

Design to meet specifications

Teamwork

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Students will learn…

Various Hull Designs

Sail Away

2 plastic bottles Paper Cardboard Glue, tape String Foil Plastic wrap Toothpicks Popsicle sticks Rubber bands

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Materials

Sail Away

Design a sailboat that…

Has the smallest sail area possible,but still

Travels the length of the trough in less than 5 seconds, and

Support a payload of 200g

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The Challenge

Sail Away

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Test Procedure

Goal 1: Smallest Sail Area Possible.

Goal 2: Travel Time < 5 seconds. (without sinking!)


Actividad 3:Biométrica de la Mano(Hand Biometrics)Measurement and biometric technologies for identificationand security applications

Hand Biometrics

Learn about biometrics technology

Learn about engineering product planning and design

Learn about meeting the needs of society

Learn about teamwork and working in groups

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Objectives

Hand Biometrics

Measurement of a physical characteristic Examples include:

Fingerprints DNA Retinal pattern Hand dimensions

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What is a biometric?

Hand Biometrics

Universality – each person should have the characteristic. Uniqueness – how well a biometric separates individuals from others. Permanence – how well a biometric resists aging, variance over time. Collectability – ease of acquisition, measurement. Performance – accuracy, speed, and robustness of technology used. Acceptability – degree of approval of a technology. Circumvention – ease of use of a substitute.

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Properties of a biometric

Hand Biometrics

Biometrics are used to match an unknown sample to a database of known samples Criminal investigations

Biometrics are used to authenticate identities Fingerprint computer login

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Why use a biometric?

Hand Biometrics

Create a database of 4 known samples from measurements of your hands

Develop a rule or algorithm by which you can: …accpect an unknown sample and match it to an

entry in your database; or …reject the unknown sample as not appearing in

the database at all

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Your Turn

Hand Biometrics

Work in groups of 4 Each person gets their hand measured 2 times

You measure your own right hand Another teammate measures

your right hand 1 “Testing” sample,

1 “Database” sample DO NOT SWAP FORMS!

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Procedure – Part 1

Testing SampleA___B___C___D___


Database SampleA___B___C___D___


Hand Biometrics

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Measuring a hand

Medida A:Desde la punta del indice hasta el nudillo

Hand Biometrics

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Measuring a hand

Medida B:Ancho del dedo anular medido a traves del nudillo superior

Hand Biometrics

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Measuring a hand

Medida C:Ancho de la palma a traves de los cuatro nudillos inferiores

Hand Biometrics

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Measuring a hand

Medida D:Ancho de la palma desde el nudillo medio del pulgar a traves de la mano

A

B

C

D

Medida A:Desde la punta del indice hasta el nudillo

Medida B:Ancho del dedo

anular medido a traves del nudillo

superior

Medida C:Ancho de la palma

a traves de los cuatro nudillos

Medida D:Ancho de la palma desde el nudillo medio del pulgar a traves de la mano

Hand Biometrics

Set aside all 4 white “Testing” forms Looking at just the 4 pink Database samples,

develop a mathematical and/or logical rule that can be used to match an unknown sample to an entry in the “Database”

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Hand Biometrics

Let Sn=An+Bn+Cn+Dn

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Example Rule









S3 = 20.5cm

S4 = 24.9cm

S2 = 25.3cm

S1 = 22.1cmTesting Sample

A___B___C___D___


S = 24.7cm

Compute Sn for each entry in “Database”

Compute S for unknown test sample

Choose Database sample with least error < 0.5 cm,Else state “No Match”

Error = 0.2cmMATCH

Hand Biometrics

Combine “Testing” samples for entire table (8 samples)

Mix and shuffle “Testing” samples Each group picks 2 random Testing samples For each sample, use your RULE to determine if

there is a match in your “Database” and, if yes, which entry matches

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Hand Biometrics

Fill in worksheet

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Actividad 4:¡Clasifícalo!(Sort It Out!)The engineering behind industrial sortingprocesses

Sort It Out

Learn about engineering systems

Learn about coin manufacturing processes

Learn about teamwork and working in groups

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Objectives

Sort It Out

Miners panning for gold

Quality control in food and other industries

Bottle sorting for recycling

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Sorting through History

Sort It Out

Image Processing:Off-the-shelf cameras, frame grabbers, and image-processing software used todevelop a casino-coin sorting system

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Different Types of Sorting

Lighting

Digital I/O & Network

ConnectionFrame Grabber

Part Sensor

Camera &

PC platform

Inspection software

Optics

Sort It Out

Material Properties of Coin: Current run through left coil,

creates magnetic field. Magnetic field passes through

and is attenuated by coin Right coil receives magnetic

field, creates measurable current with different value depending on the coin

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Different Types of Sorting

Coin in Center

Transverse line represents direction of magnetic field

Sort It Out

Mixed coins come from a variety of sources and must be sorted out before they can be redistributed Coins from vending machines Coins from parking meters

Also helpful to identify fake or foreign coins

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Why Coin Sorting is Needed

Sort It Out

Mixed coins are Sorted Rolled Re-circulated through

banks and businesses

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Why Coin Sorting is Needed

Sort It Out

Groups of 2

You are a team of engineers hired by a bank to develop a machine to sort coins that are brought in by customers.

Must mechanically sort mixed coins into separate containers: 10 x $1 10 x $2 10 x $5 5 x $10

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Your Turn

Sort It Out

How good is it?

1: “Distance” performance index:

A coin that does not get sorted has maximum Derror = 3

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Your Turn

$1$1 $2$2 $5$5 $10$10

$1$1

$1 $1$2

$2$2$2$2$2

$5$5$5$5 $5

Distance from correct binhere, Derror = 2 bins

$10$10 $10

$2

Index Derror,i2

i

4 1 2.24

$2

Sort It Out

How good is it?

2: “Percentage” performance index:

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Your Turn

$1$1 $2$2 $5$5 $10$10

$1$1

$1 $1$2

$2$2$2$2$2

$5$5$5$5 $5 $10

$10 $10$2

$2

Index # of coins incorrectly identified

Total # of coins to sort100

2

35100 5.7%

Sort It Out

Materials: glue, tape, paper or plastic

plates, cardboard, scissors or hole punch, foil, paper, cardboard tubes

one sample of each coin to be sorted

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Your Turn

Design (draw) a mechanical sorter that can separate the $1, $2, $5, and $10 coins

Input: either Parallel – all coins are inserted at

start of your sorter together; or Serial – coins are inserted at start

of your sorter one at a time

Output: Each denomination of coin in its own physical container

Sort It Out

At your table, choose 2 groups to build a parallel sorter; the other 2 groups will build a serial sorter

You will have 45 seconds to allow your sorter to operate

Predict the value of the two performance indices for your design

Construct your sorting mechanism

Test it!

Can you do better?

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Your Turn

Sort It Out

Did your sorting mechanism work? If not, why did it fail?

What were your performance index values?

What levels of error would be acceptable in: Medical Equipment manufacturing? Nail manufacturing?

What redesigns were necessary when you went to construct your design? Why?

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Conclusion

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