advanced design applications unit 4: manufacturing advanced design applications unit 4:...
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ADVANCED DESIGN APPLICATIONSADVANCED DESIGN APPLICATIONS
UNIT 4: MANUFACTURINGUNIT 4: MANUFACTURING
© 2015 International Technology and Engineering Educators Association
Learning Cycle Five - Making Sense Of It All
The BIG IdeaThe BIG Idea
Big Idea:
In this learning cycle, students will interact with different types of sensors and learn about their functions within the manufacturing process. Knowledge of how manufacturing is shaped by these external factors will be essential for student success in the Manufacturing Unit Learning Cycles, Preliminary and Primary Challenges of the Advanced Design Applications course.
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ObjectivesObjectives
After completing this learning cycle, you will be able to:
Explain how sensors work and how they are used in manufacturing to control technological systems and devices.
Develop a program to logically control a set of inputs to achieve a desired outcome.
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SensorsSensors
What would you do if you touched a hot stove?
What sense do we use to cross the street?
What about to turn off the alarm clock?
How can we find freshly-made popcorn?
How can we pick the best ice cream?
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www.clipartbest.com
SensorsSensors
Senses provide us with information Similar to a
manufacturing system Inputs/Outputs Processing power Rely heavily on
information processed in sensory system to safely function.
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http://www.sonicscoop.com/site/wp-content/uploads/2013/03/InputOutputLOGO.jpg
SensorsSensors
Automobile Industry
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• Initial years relied on senses of the human body.•More complex automobiles made it impossible to continue in this fashion.• Today computers and other information systems have take the place of humans.
SensorsSensors
Information gathering technology Heat sensors in ovens Motion detectors in
security systems Thermostat controls in air
conditioning Float sensor on an
automatic ice machine
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Normally closed sensorsClosed when not activated (turned on)
Open when activated (turned off)
Normally open sensorsOpen when not activated (turned off)
Closed when activated (turned on)
Depending on the type of device or sensor, the program may cause the opposite output than expected.
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ExplorationExploration
Piezo Vibration SensorPiezo Vibration Sensor
A piezoelectric sensor is a device that uses the piezoelectric effect, to measure changes in pressure, acceleration, strain or force by converting them to an electrical charge.
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http://oomlout.com/parts/VIBS-01-datasheet.pdf
Photo ResistorPhoto Resistor
A photoresistor or light-dependent resistor (LDR) or photocell is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity.
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http://en.wikipedia.org/wiki/Photo_resistor#mediaviewer/File:LDR.jpg
Temperature SensorTemperature Sensor
These sensors use a solid-state technique to determine the temperature. They use the fact as temperature increases, the voltage across a diode increases at a known rate.
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http://www.tandyonline.co.uk/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/t/m/tmp36_1.png
Boolean LogicBoolean Logic
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The AND Function• Requires both sensors to be either activated
or closed for output to be activated.
Boolean LogicBoolean Logic
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The OR Function• Requires only one sensor to be activated
or closed for the output to be activated.