Assigned Weights to Objectives

Objectives	Weights
SemiAutomatic	6
Modular Colours	1
Portable	3
High-graded Material	6
Light Weight	4
Cost Efficient	7
User Friendly	8
Safety	9
Region Selectivity	6

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PUGH CHART

Objectives	Weight	Rack-Pinion Model	Scissor-Lift Model	Wiper Model	Robotic-Arm Model
SemiAutomatic	6	DATUM	0	0	0
Modular Colours	1	DATUM	0	0	0
Portable	3	DATUM	++	+	0
High-graded Material	6	DATUM	0	0	0
Lightweight	4	DATUM	+	+	-
Less Power Consuming	5	DATUM	+	0	-
Cost efficient	7	DATUM	0	+	0
User-friendly	8	DATUM	++	0	+
Safety	9	DATUM	0	+	-
Region Selectivity	6	DATUM	++	0	++
Score(+)	55	DATUM	43	31	20
Score(-)	0	DATUM	0	0	18
Total	55	DATUM	43	31	2

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5.1 JUSTIFICATION FOR SCORE

Design	Objective	Score Allocated	Justification
Rack-Pinion Model	Semi Automatic	DATUM	-
	Modular Colours	DATUM	-
	Portable	DATUM	-
	High-graded Material	DATUM	-
	Light Weight	DATUM	-
	Less Power Consuming	DATUM	-
	Cost Efficient	DATUM	-
	User-friendly	DATUM	-
	Safety	DATUM	-
	Region Selectivity	DATUM	-
Scissor-Lift Model	Semi Automatic	0	similar to DATUM
	Modular Colours	0	similar to DATUM
	Portable	6	Due to the string
	High-graded Material	0	similar to DATUM
	Light Weight	-4	Has two sections
	Less Power Consuming	0	similar to DATUM
	Cost Efficient	0	similar to DATUM
	User-friendly	8	Using the Interface
	Safety	0	similar to DATUM
	Region Selectivity	6	Using the Interface
Wiper Model	Semi Automatic	0	similar to DATUM
	Modular Colours	0	similar to DATUM
	Portable	6	Due to it's clip ON fixation
	High-graded Material	0	similar to DATUM
	Light Weight	4	Less motors
	Less Power Consuming	5	Less motors
	Cost Efficient	7	Less components needed
	User-friendly	0	similar to DATUM
	Safety	9	The parts remain attached to board
	Region Selectivity	0	similar to DATUM
Robotic-Arm Model	Semi Automatic	0	similar to DATUM
	Modular Colours	0	similar to DATUM
	Portable	0	similar to DATUM
	High-graded Material	0	similar to DATUM
	Light Weight	-4	Single Motor
	Less Power Consuming	-5	Single Motor
	Cost Efficient	0	similar to DATUM
	User-friendly	8	Interface
	Safety	-9	Heavy weight (might not stand)
	Region Selectivity	12	Interface

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5.2 SELECTED DESIGN

The Scissor-Lift Model

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5.4 FUNCTION CLUSTERING

INDICATION UNIT

• INDICATING START
• INDICATING PAIRING MODE
• INDICATING SUCCESSFULL CONNECTION
• INDICATING THE CONCLUSION OF CLEANING

INTERPHASE UNIT

• PROVISION TO SELECT THE AREA
• DISPLAY CONNECTIVITY
• TO INITIATE CLEANING
• INDICATE THE CONCLUSION OF CLEANING

WIRELESS CONNECTIVITY SYSTEM

• ESTABLISH CONNECTION BETWEEN MOBILE DEVICE AND CONNECTING BOT

CLEANING SYSTEM

• TO MOVE THE BOT
• TO CLEAN

SPRAYING SYSTEM

• A CONTAINER TO STORE THE LIQUID
• TO SPRAY THE LIQUID

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5.5 INTERACTION BETWEEN SUBSYSTEMS

Sl.No.	Subsystem
1	Indication unit
2	interface unit
3	Wireless connection unit
4	Cleaning unit

                                                      **Interaction Details**

Indication Unit	interface unit	Wireless connection unit	Cleaning unit
Spatial	Yes	No	No
Data	Yes	Yes	Yes
Material	No	No	No

Interface Unit	Indication unit	Wireless connection unit	Cleaning unit
spatial	Yes	Yes	No
Data	Yes	Yes	Yes
Material	No	No	No

Wireless Connection Unit	Indication unit	Interface unit	Cleaning unit
Spatial	No	No	No
Data	Yes	Yes	Yes
Material	No	No	No

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