Weights Assigned to Prioritised Objectives

Objectives	Weightage
User-friendly	8
Strength	6
Portable	4
Safety	5
Precise	3

PUGH Chart

Objectives	Weightage	Design Idea1	Design Idea2	Design Idea3	Design Idea4
User-friendly	8	+	+	Datum	--
Strength	6	0	++	Datum	0
Portable	4	+	0	Datum	+
Safety	5	-	+	Datum	0
Precise	3	++	0	Datum	-
+ Score		18	25		14
- Score		5	0		19
Total		13	25		-5

Justifications

Design no	Objective	Score given	Justification
1	User-friendly	+	More commands are not required for this machine.
	Strength	0	both the machines have same strength they can hold same amount of load.
	Portable	+	the machine is light compared to the other.
	Safety	-	trench drill may cause harm.
	Precise	++	as the space for seeds is less one seed will be dropped at a time.
2	User-friendly	+	The machine is automatic so no complexity in handling.
	Strength	++	It capacity of withholding load is high.
	Portable	0	It is same as handy as the reference machine.
	Safety	+	Machine contains bucket teeth like structure which are not so harmful.
	Precise	0	No comparison
4	User-friendly	--	Mobile is used to give commands so the users may come across difficulties to handle.
	Strength	0	carrying capacity is same so no comparison.
	Portable	+	Its light weight so easy to carry.
	Safety	0	No harmful parts so safe to use.
	Precise	-	Not accurate as the seeds are dropped through wheels.

SELECTED DESIGN

clustering of the subsystems

Identified list of subsystems

sl no.	Subsystems
1	Subsystem-1(DIGGING AND MOVEMENT)-AKSHATA VERNEKAR
2	Subsystem-2(SOWING AND STORAGE)-ANUSHREE KAGADAL,ANUSHA AKKI
3	Subsystem-3(COVERING,OBSTACLE DETECTION,NOTIFICATION-ADNAN BASARI

FUNCTIONAL TREE VS COMPONENT HIERARCHY

FUNCTIONAL TREE

COMPONENT HIERARCHY

Interaction details:

Subsystem-1

-	Subsystem-2	Subsystem-3
Energy interaction	Y	Y
Data material	Y	Y
Material interaction	N	N
Spatial interaction	N	N

Explanation:

• Power is required for sowing seed along with moving the machine.
• Power is required for indication, notification and covering.
• Commands are given for sowing and notification.

Subsystem-2

-	Subsystem-1	Subsystem-3
Energy interaction	Y	Y
Data material	N	Y
Material interaction	N	Y
Spatial interaction	N	Y

Explanation:

• Power is required for sowing seeds and notification.
• Commands are given when the container is empty.
• Sensors are connected to the container.

Subsystem-3

-	Subsystem-1	Subsystem-2
Energy interaction	Y	Y
Data material	N	Y
Material interaction	N	Y
Spatial interaction	N	Y

Explanation

• Power is required for giving sound or indicating light
• Commands are given for the completion of seeds of container.
• Sensing material are connected.