PUGH CHART

• TASK 1- Assign weights to the objectives

|OBJECTIVET|WEIGHTS|

OBJECTIVET	WEIGHTS
USER FRIENDLY	9
EASE OF USE	4
PORTABILITY	5
SEMI AUTOMATIC	6
USE OF STANDARDS	3
LOW COST MAINTENANCE	7

• TASK-2 - Write Pugh chart for the 5 alternative designs shown in figures

DESIGN OBJECTIVES	WEIGHTS	DESIGN 1	DESIGN 2	DESIGN 3	DESIGN 4	DESIGN 5
User friendly	9	Datum	++	+	+	0
Ease of use	4	Datum	+	++	0	+
Portability	5	Datum	++	-	+	0
semi automatic	6	datum	+	0	-	+
Use of standard parts	3	Datum	-	-	+	0
Low cost maintenance	7	Datum	+	-	0	0
Score(+)		0	39	25	17	10
Score (-)		0	3	15	0	0
Total		0	36	10	17	10

5.1 JUSTIFICATION FOR SCORE GIVEN

DESIGN NO.	OBJECTIVE	SCORE ALLOCATED	JUSTIFICATION FOR THE SCORE
1	User friendly	Datum	As per the reference
	Ease of Use	Datum	As per the reference
	Portability	Datum	As per the reference
	Maintenance	Datum	As per the reference
	Semiautomatic	Datum	As per the reference
	use of standard parts	Datum	As per the reference
2	User friendly	++	The machine is safe to use and comfortable
	Ease of Use	+	Convenient to use
	Portability	++	small in size so easy to carry
	Maintenance	+	since it has many adopted features like dust proof,rust proof so has long durability
	Semiautomatic	+	user can switch to both manual and semiautomatic mode when necessary
	use of standard parts	-	sensors are used which help in sensing low level of urea and alertness is also a function included
3	User friendly	+	helps manually
	Ease of Use	++	normally putting in urea to dispense properly
	Portability	-	can not be pulled easily wherever required
	Maintenance	-	more maintenance is needed if it is taken in uneven area the machine maybe damaged
	Semiautomatic	0	semi operated by the user
	use of standard parts	-	not much used
4	User friendly	+	light weight and convenient
	Ease of Use	0	same as reference
	Portability	+	can be movable easily due to its shape
	Maintenance	0	software updates need to be done,and regular replacing of filters is a must
	Semiautomatic	-	cant be semiautomatic
	use of standard parts	+	we used impeller disc which can spread urea to most of the parts
5	User friendly	0	same as the reference
	Ease of use	+	easily accesible
	Portability	++	can be carried from one place to other
	Maintenance	0	regular cleaning and inspecting nozzle is required
	Semiautomatic	+	can be manual and can run on DC as well
	use of standard parts	0	alert signal for low level,over flow of urea,etc

5.2 SELECTED DESIGNS

5.3 PRODUCT ARCHITECTURE

5.4 FUNCTION CLUSTERING

5.5 INTERACTION BETWEEN SUBSYSTEMS

5.5.1 Subsystsem List

SL. NO.	Subsystem
1	Input and storage unit
2	Battery and alert unit
3	Dispensing unit

5.5.2Ineraction Detail

Subsystem1	Subsystem2	Subsystem3
Spatial		Yes
Data
Material		Yes

Subsystem2	Subsystem1	Subsystem3
Spatial		Yes
Data
Material		Yes

Subsystem3	Subsystem1	Subsystem2
Spatial	Yes	Yes
Data
Material	Yes	Yes