PUGH CHART

OBJECTIVES

• Safety
• Ease of use
• Portability
• Looks
• Cost

Assigned weights to the Objective

Objective	Weights
Safety	8
Ease of use	6
Portability	4
Looks	5
Cost	3

Pugh Chart for 4 Alternative designs

Design Objective	Weights	Design 1	Design 2	Design 3	Design 4
Safety	8	0	Datum	0
Ease of use	6	0	Datum	-
Portability	4	0	Datum	--
Looks	5	+	Datum	+
Cost	3	-	Datum	-
Score(+)		5	0	5
Score(-)		-3	0	-17
Total		2	0	-12

5.1 JUSTIFICATION FOR SCORE GIVEN

Design no	Objective	Score Allocated	Justification for the Score
1	Safety	0	It will be as safe to use as the datum
	Ease of use	0	It will be as easy to use as the datum
	Portability	0	Same portability like datum
	Looks	5	It will be more fancy and cool
	Cost	-3	It will be more costly than the datum product
2	Safety	0	used for comparison
	Ease of Use	0	used for comparison
	Portability	0	used for comparison
	Looks	0	used for comparison
	Cost	0	used for comparison
3	Safety	0	It will be as safe to use as the datum
	Ease of use	-6	Using it will be a bit difficult
	Portability	-8	It wont be a portable product because it will be sealed with the ceiling
	Looks	5	Will look cooler than the datum product
	Cost	-3	Will be costly than the datum product
4	Safety	0	It will be as safe to use as the datum
	Ease of Use	0	It will be as easy to use as the datum
	Portability	0	Same portability like datum
	Looks	5	It will be more fancy and cool
	Cost	-3	It will be more costly than the datum product

5.2 SELECTED DESIGN

PRODUCT ARCHITECTURE

5.4 FUNCTION CLUSTERING

5.5 INTERACTION BETWEEN SUBSYSTEMS

Sub system list

Sl no	Subsystem
1	Operating unit
2	Sensing unit
3	Indicating unit

Interaction Details

Subsystem 1	Subsystem 2	Subsystem 3
Spatial	Yes	No
Data	Yes	Yes
Material	No	No

Subsystem 2	Subsystem 1	Subsystem 3
Spatial	Yes	No
Data	Yes	Yes
Material	Yes	No

Subsystem 3	Subsystem 1	Subsystem 2
Spatial	No	Yes
Data	Yes	Yes
Material	Yes	No