Transcript ManCyc5 Presentation 1.1

ADVANCED DESIGN APPLICATIONS
UNIT 4: MANUFACTURING
Learning Cycle Five - Making Sense Of It All
© 2015 International Technology and Engineering Educators Association
The 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.
© 2015 International Technology and Engineering Educators Association
Objectives

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.
© 2015 International Technology and Engineering Educators Association
Sensors
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?
www.clipartbest.com
© 2015 International Technology and Engineering Educators Association
Sensors
 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.
© 2015 International Technology and Engineering Educators Association
http://www.sonicscoop.com/site/wpcontent/uploads/2013/03/InputOutputLOGO.jpg
Sensors
Automobile Industry
• 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.
© 2015 International Technology and Engineering Educators Association
Sensors
 Information gathering
technology
 Heat sensors in ovens
 Motion detectors in
security systems
 Thermostat controls in air
conditioning
 Float sensor on an
automatic ice machine
© 2015 International Technology and Engineering Educators Association
Exploration
Normally closed sensors
Closed when not activated (turned on)
Open when activated (turned off)
Normally open sensors
Open 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.
© 2015 International Technology and Engineering Educators Association
Piezo 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.
http://oomlout.com/parts/VIBS-01-datasheet.pdf
© 2015 International Technology and Engineering Educators Association
Photo Resistor
 A photoresistor or lightdependent resistor (LDR)
or photocell is a lightcontrolled variable
resistor. The resistance of
a photoresistor decreases
with increasing incident
light intensity; in other
words, it exhibits
photoconductivity.
© 2015 International Technology and Engineering Educators Association
http://en.wikipedia.org/wiki/Photo_resistor#mediaviewer/File:LDR.jpg
Temperature 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.
© 2015 International Technology and Engineering Educators Association
http://www.tandyonline.co.uk/media/catalog/product/cache/1/image/9df78ea
b33525d08d6e5fb8d27136e95/t/m/tmp36_1.png
Boolean Logic
The AND Function
• Requires both sensors to be either activated
or closed for output to be activated.
© 2015 International Technology and Engineering Educators Association
Boolean Logic
The OR Function
• Requires only one sensor to be activated
or closed for the output to be activated.
© 2015 International Technology and Engineering Educators Association