5. CONCEPT EVALUATION AND PRODUCT ARCHITECTURE.2.0 - Q-div-Engg-Exploration-2026-27-Odd/Repo-11 GitHub Wiki

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OBJECTIVES	WEIGHTS
Cleaning efficiency	9
Safety	8
Ease of use	7
Portability	5
Use of standard parts	6
Cost	7
Durability	6
Water saving efficiency	5

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OBJECTIVE	WEIGHT	DESIGN 1	DESIGN 2	DESIGN 3	DESIGN 4	DESIGN 5
Cleaning efficiency	9	+	+	+	0	DATUM
Safety	8	+	0	+	0	DATUM
Ease of use	7	+	0	0	0	DATUM
Portability	5	0	_	_	-	DATUM
Use of parts	6	+	_	-	0	DATUM
Cost	7	+	_	-	-	DATUM
Durability	6	+	0	-	-	DATUM
Water saving	5	-	+	-	+	DATUM
Total		38	-4	-2	-13	0
Rank		1	4	3	5	2

 

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OBJECTIVE	DESIGN	SCORE	JUSTIFICATION
Cleaning	D-1	+	Better 360 clean-spray nozzle +agitation performer basket +DC motor+ gearbox
	D-2	+	Better – Enclosed drawer + spray nozzles wash all sides + water tank recirculation vs Datum simple bubble only
	D-3	+	Better – Fine bubble diffuser 1–2 mm + pressurized recirculation pipe + rinse spray bar vs Datum single pump
	D-4	0	Same – Spray nozzle + basket similar to Datum bubble cleaning, no agitator
Safety	D-1	+	Safer – Enclosed SS304 chamber + transparent lid + timer control vs Datum fragile acrylic + exposed pumps + shock risk
	D-2	0	Same – Transparent lid + proximity sensor safe but Cello plastic similar fragility as Datum acrylic
	D-3	+	Safer – Food-grade plastic tub industrial grade vs Datum fragile acrylic, enclosed blower
	D-4	0	Same – Acrylic container like Datum, no extra safety
Ease of use	D-1	+	Easier – Auto ESP32 + timer/modes + buzzer indicator + one-button rotary wash vs Datum manual Arduino control
	D-2	0	Same – ESP32 + buzzer + control panel similar to D1 but drawer pull needs two hand
	D-3	0	Same – Industrial controls not user-friendly, similar as Datum manual
	D-4	0	Same – Microcontroller + buzzer + spray similar to Datum
Portability	D-1	0	Same – Washing chamber + DC motor + gearbox + water pump similar weight as Datum acrylic + 2 pump
	D-2	-	Less portable – Cello box + water tank + level sensor + bulky drawer + adapter heavy vs Datum small acrylic box
	D-3	-	Less portable – Large food-grade tub + air pump/blower + water pump/blower + recirculation pump industrial size vs Datum small
	D-4	-	Less portable – Container + geared motor + spray frame bigger than Datum
Standard parts	D-1	+	More standard – SS304 basket + standard DC motor + gearbox + water pump + nozzles are market standard vs Datum custom acrylic
	D-2	-	Less standard – Custom Cello drawer + water tank + proximity sensor custom mount not standard
	D-3	-	Less standard – Fine bubble diffuser 1–2 mm custom plate + industrial blower not standard kitchen parts
	D-4	0	Same – Standard container + geared motor + spray nozzle similar to Datum
Cost	D-1	+	Cheaper – Single motor + gearbox + water pump Rs.1600 vs Datum 2 pumps + air + water Rs.1800 = cheaper
	D-2	-	Costlier – Water tank + sensor + ESP32 + buzzer + proximity + pump + Cello Rs.2500 > Datum
	D-3	-	Costlier – Air pump/blower + fine diffuser + water pump + large tub Rs.3000 > Datum
	D-4	-	Costlier – Geared motor + spray + container + adaptor + micro Rs.2200 > Datum
Durability	D-1	+	More durable – Steel SS304 rotary basket + metal chamber vs Datum fragile acrylic cracks easily
	D-2	0	Same – Cello plastic drawer similar durability to acrylic Datum, not steel
	D-3	-	Less durable – Food-grade plastic less durable than SS304, diffuser plate clogs
	D-4	-	Less durable – Plastic container + motor mount plastic less durable, similar fragility
Water saving	D-1	-	Less water saving – Rotary agitator + spray needs more water, no recirculation vs Datum circulation recycles
	D-2	+	More saving – Water tank + level sensor + recirculation pump + drain hose saves water vs Datum open
	D-3	+	More saving – Water pump recirculation + pressurized pipe + overflow recycles water
	D-4	+	More saving – Drain outlet pipe + controlled inlet saves vs Datum continuous bubbles

 

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SUBSYSTEM 1 WASHING BASET+MOTOR	SUBSYSTEM 2 WATER SYSTEM	SUBSYSTEM 3 CONTROL+POWER
Spatial	YES	YES
Data	NO	YES
Material	YES	NO

 

 

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Food is loaded through opening into SS304 rotatory basket. The LID switch + transparent lid tells controller Safe to start -ESP32 +buzzer indicates start

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SUBSYSTEM 2 WATER SYSTEM	SUBSYSTEM 1 WASHING	SUBSYSTEM 3 CONTROL+POWER
Spatial	YES	YES
Data	NO	YES
Material	YES	NO

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The basket receives food and holds it in water Sprays over rotating basket, it levels sensor Drain outlet report to and are driven by the ESP32 controller.