product Architecture

PUGH CHART

Design Objectives	Weights	Design 1	Design 2	Design 3	Design 4
Resolution of image	8	+	++	Datum	+
Ease of use	4	-	-	Datum	-
Portability	6	--	+	Datum	-
Use of standard parts	4	++	-	Datum	+
Cost	3	0	0	Datum	++
Score(+)		16	22		18
Score (-)		-16	-8		-10
Total		2	14		8

Design No.	Objective	Score Allocated	Justification for the Score
1	resolution of image	+	it takes good image of object due to IR sensor
Ease of Use	-	its complicated to use
	Portability	--	as separate system used for different function its difficult to carry
	Use of standard parts	++	more standard part are used
	Cost	0	same cost required as design 3
2	Resolution of image	++	it takes good image as design 1
	Ease of Use	-	due to use of rack and pinion mechanism it will complecate to work on
	portability	+	its easy to carry than design 1
	Use of standard parts	-	less standard parts used than design 3
	Cost	0	same cost required as design 3
3	resolution of image	0
	Ease of Use	0
	Portability	0
	use of standard parts	0
	Cost	0
	4	resolution of image	+
	Ease of Use	-	comparitively heavy to use
	Portability	-	as same as the design 1
	use of standard parts	+	due to suitable mechanism its parts are standard
	Cost	++	low cost compare to all designs