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Mechanical Engineering Concept Selection

Physical Deterrence Concepts

		(reference) None		360 degree Sprinkler		Mister		Water Jet		Pulsing Jet
Selection Criteria	Weight	Rating	Wtd	Rating	Wtd	Rating	Wtd	Rating	Wtd	Rating	Wtd
Rate of Water Use	20%	5	1.00	3	0.60	4	0.80	1	0.20	2	0.40
Fabrication	10%	5	0.50	4	0.40	3	0.30	2	0.20	2	0.20
Programming Complexity	10%	5	0.50	5	0.50	5	0.50	2	0.20	1	0.10
Cost	5%	5	0.25	3	0.15	3	0.15	3	0.15	3	0.15
Pump Strength Required	10%	5	0.50	4	0.40	4	0.40	3	0.30	3	0.30
Range	20%	1	0.20	5	1.00	3	0.60	5	1.00	5	1.00
Robustness	5%	5	0.25	5	0.25	5	0.25	5	0.25	5	0.25
Implementation	10%	5	0.50	5	0.50	2	0.20	3	0.30	3	0.30
Effectiveness	10%	1	0.10	5	0.50	2	0.20	5	0.50	5	0.50
	Total Score	3.80		4.30		3.40		3.10		3.20
	Rank	2		1		3		5		4
	Continue?			Yes

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Adjustable Plant Holder Concepts

		(reference) None		Metal Band		Sets of Brackets		Brackets with Sliders		Rubber Straps		One Larger Pot
Selection Criteria	Weight	Rating	Wtd	Rating	Wtd	Rating	Wtd	Rating	Wtd	Rating	Wtd	Rating	Wtd
Feasibility	15%	5	0.75	5	0.75	5	0.75	5	0.75	5	0.75	1	0.15
Fabrication	15%	5	0.75	4	0.60	3	0.45	4	0.60	5	0.75	5	0.75
Adjustability	20%	1	0.20	5	1.00	4	0.80	4	0.80	4	0.80	4	0.80
Cost	10%	5	0.50	4	0.40	3	0.30	3	0.30	4	0.40	4	0.40
Implementation	15%	5	0.75	3	0.45	4	0.60	4	0.60	3	0.45	2	0.30
Effectiveness	10%	1	0.10	5	0.50	4	0.40	4	0.40	3	0.30	2	0.20
Ease of Change	10%	1	0.10	5	0.50	3	0.30	4	0.40	3	0.30	5	0.50
Robustness	5%	5	0.25	4	0.20	5	0.25	4	0.20	1	0.05	5	0.25
	Total Score	3.40		4.40		3.85		4.05		3.80		3.35
	Rank	5		1		3		2		4		6
	Continue?			Yes				Yes

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Physical Deterrence Concepts - Reservoir/pump

		Additional Pump		New Reservoir w/ 2 Pumps		Additional Reservoir w/ Pump		Solenoid Valve
Selection Criteria	Weight	Rating	Wtd	Rating	Wtd	Rating	Wtd	Rating	Wtd
Cost	30%	5	1.50	3	0.90	4	1.20	3	0.90
Size	20%	5	1.00	3	0.60	3	0.60	5	1.00
Fabrication	10%	3	0.30	4	0.40	5	0.50	4	0.40
Difficulty to Implement	30%	3	0.90	4	1.20	5	1.50	4	1.20
Water Management	10%	4	0.40	4	0.40	4	0.40	4	0.40
	Total Score	4.10		3.50		4.20		3.90
	Rank	2		4		1		3
	Continue?					Yes

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