Objectives:

1.safety

2.Ease of use

3precision of sensing

4.cost

5.portability

Assigning weights to the objectives.

SI.no	Objectives	weightage
1	Safety	7
2	Ease of use	5
3	precision of sensing	8
4	Cost	4
5	portability	6

PUGH Chart

Objectives	Weightage	Design 1	Design 2	Design 3	Design 4
safety	7	Datum	-(-7)	-(-7)	-(-7)
Ease of use	5	Datum	++(+10)	-(-5)	+(+5)
precision of sensing	8	Datum	+(+8)	+(+8)	+(+8)
Cost	4	Datum	+(+4)	0	+(+4)
Portability	6	datum	0	+(+6)	0
+Score		0	+22	+18	+17
-Score		0	-7	-12	-7
Total score		0	+15	+6	+10

The best idea selected is IDEA 2

Design Idea1

Objectives	Score given	Justification
Safety	0	it doesn't have any pointed edges,the battery used is of very low voltage,so it is safe to use
Ease of use	0	sorting machine has a motor for its movement so the user can effortlessly operate it
precision of sensing	0	use sensors to find size of chocolate
portability	0	machine is easy to handle and not too heavy and portable one
Cost	0	the sensors and the motors are all chosen such that the cost is minimal

Design Idea 2

Objectives	Score given	Justification
Safety	-	the unstable single rod for first container make it less safe
Ease of use	++	the complete design is is more easy to use
precision of sensing	+	the position of sensors increase the chances of an chocolate movements based on size
Portability	0	its not heavy to carry and its portable one
Cost	+	less number of sensors make it cheaper

Design Idea 3

Objectives	Score given	Justification
Safety	-	the physical barriers may hurt the user in case of geeting stuck up
Ease of use	-	the proudct will become quite heavy and the user has to manually turn the machine
precision of sensing	+	IR sensors are used for precise sensing
Portability	+	easy to handle and portable one
Cost	0	here they use sensors and robotic arm and extra barriers increase the cost of machine

Design Idea 4

Objectives	Score given	Justification
Safety	-
Ease of use	+	sorting machine not too heavy so its user friendly
precision of sensing	+	IR sensors are used for precision of sensing
Portability	0	having base structure not makes it easily portable
Cost	+	use of sensors and motors are not soo costly

Final sketch