Engineering 161
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Transcript of Engineering 161
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Text
The Automated Trash ReceptacleTeam 4: Amrit, Dalton, Daniel, Edgar, John and Josh
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Objectives
Design and Produce a trash can that can open and close automatically
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The Design ProcessProblem
Our design will improve sanitary conditions and convenience by sealing receptacle openings and allowing an automated opening switch
Constraints ~ 10 weeks
$50
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The Design ProcessAlternatives
Moving trash can
Trash can that slides out of a housing
Hole in the housing that opens and closes
Shutter system
Roll Up/Down
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Alternatives for MotorsDC Motor
Power Window MotorStepper Motor
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The Design ProcessEvaluating Alternatives
Evaluation Criteria Weight
Trash can slides out of housing Hole in the housing
Value Wt * Value Value Wt * Value
Simplicity 0.4 2 0.8 5 2.0
Functionability 0.3 5 1.5 5 1.5
Quickly Produced 0.15 4 0.6 5 0.75
Cost 0.05 4 0.2 7 0.35
Safety 0.1 7 0.7 6 0.6
Total 1.0 — 3.8 — 5.2
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The Design ProcessEvaluating Alternatives
Evaluation Criteria Weight
Shutter System Roll Up/Down
Value Wt * Value Value Wt * Value
Simplicity 0.4 3 1.2 9 3.6
Functionability 0.3 6 1.8 5 1.5
Quickly Produced 0.15 2 0.30 7 1.05
Cost 0.05 10 0.50 10 0.5
Safety 0.1 6 0.6 6 0.6
Total 1.0 — 4.4 — 7.25
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Alternatives for Door
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Building A Prototype: CAD
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Building a PrototypePart of the housing
Window motor
Ardunino Uno, Motor Shield
Power Supply
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ProblemsElectrical - getting enough power to open and close the door
Proximity dectection (clothing)
False tests
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Future planssolar power
multiple sensors
motor open/close switches
safety features