Concept Selection and Product Architecture - L-Division-2018-2019/repo11 GitHub Wiki

1.Weights assigned to prioritized objectives

Objectives	Weightage
Safety	9
Efficient Collection	8
Efficient Movement	7
Efficient Crushing	6
Cost	5

2.PUGH Chart

Objectives	Weightage	Design Idea 1	Design Idea 2	Design Idea 3	Design Idea 2
Safety	9	+	+	+	Datum
Efficient Collection	8	++	+	+	Datum
Efficient Movement	7	+	++	++	Datum
Efficient Crushing	6	++	+	0	Datum
Cost	5	0	0	+	Datum
Score+	0	45	37	36	0
Score-	0	0	0	0	0
Total		45	37	36	0

The best Concept selected is "Design 1"

3.Justification of PUGH Chart

Design Idea no.	Objectie	Score Given	Justification
1	Safety	+	It has vacuum which can suck anything but, this will not, it is a plus point
1	Efficient Collection	++	Since the datum has vacuum it will suck the sand when compared to this it does not take sand
1	Efficient Movement	+	Since this has wide tyres where as datum has Triangle Wheels which is a plus point
1	Efficient Crushing	++	Since it has blades where as compared to compressing machine it has efficient crushing.
1	Cost	0	Both will cost around same
2	Safety	+	It has vacuum which can suck anything but, this will not, it is a plus point of saftey.
2	Efficient Collection	+	Since the datum has vacuum it will suck the sand when compared to this it does not take sand
2	Efficient Movement	++	Here it has a conveyor belt mechanism it is good where as datum has Triangle Wheels which is an plus point
2	Efficient Crushing	+	Since it has blades where as compared to compressing machine it has efficient crushing.
2	Cost	0	Here Both will cost around same
3	Safety	+	It has vacuum which can suck anything but this will not, it is a plus point of saftey
3	Efficient Collection	+	Since the datum has vacuum it will suck the sand when compared to this it does not take sand
3	Efficient Movement	++	Here it has a conveyor belt mechanism it is good where as datum has Triangle Wheels which is an plus point
3	Efficient Crushing	0	Here they both have same mechanism
3	Cost	+	This will cost less compared to previous one.

4.Selected Design

5.Glass box

6.Identified list of subsystems

Sl.no	Subsystems
1.	Collection of litter
2.	Crushing of litter

Interaction details

Subsystem 1	Collection of litter
Interactions	subsystem a- Movement of conveyor belt	subsystem b-collection of litter	subsystem c-disposal of waste into crusher
Energy Interaction	1	1	0
Data Interaction	1	0	0
Material interaction	1	1	0
spatial interaction	1	1	0

Subsystem 2	crushing and removal of litter
Interactions	subsystem a- crushing of litter	subsystem b-disposal into the garbage collector	subsystem c-removal of waste manually
Energy Interaction	1	0	0
Data Interaction	1	0	0
Material interaction	1	1	0
Spatial interaction	0	0	0

7.Functional tree Vs Component hirerarchy

8.System interaction details table

4.1 Building Wireless connection

Steps	User action	System Behavior
1).	Switch on the batteries of both mobile and robot
2).	Sending signal
3).		Accept the signal
4).		Confirm the signal
5).		Wireless connection built
6).		Glow The LED Light

4.2 Collecting the Garbage

Steps	User action	System Behavior
1).	Send the signal to switch on the machine
2).		Accept the signal sent
3).		Confirm the signal received
4).		Start the conveyor belt
5).		Start Collecting trash
6).	Send the signal for motion of the machine
7).		Accept the signal sent
8).		Confirm the signal received
9).		Collection of the garbage and sent to destruction box
10).	Send the signal to switch off the trash cleaning machine
11).		Accept the signal sent
12).		Confirm the signal received
13).	Send the signal to stop motion of machine
14).		Accept the signal sent
15).		Confirm the signal received

4.2 Destruction of the Garbage

Steps	User action	System Behavior
1).	Send the signal to switch on the machine for crushing
2).		Accept the signal sent
3).		Confirm the signal received
4).		Revolving of crushing
5).		Destruction of the trash
9).	Send the signal to switch off the machine of crushing
10).		Accept the signal sent
11).		Confirm the signal received
12).	Remove the Garbage manually