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5. concept generation
| Serial No. | Functions from User Perspective | Functions from Designer Perspective |
|---|---|---|
| 1 | Easily puts used paper cup into machine | Provide an accessible cup-feeding inlet |
| 2 | Crush cups without manual effort | Provide an automatic crushing mechanism |
| 3 | Process many cups quickly | Design for high-throughput continuous operation |
| 4 | Reduce the volume of waste | Achieve high cup volume reduction ratio |
| 5 | Avoid touching dirty cups | Provide hands-free/automatic operation |
| 6 | Know when the machine is working | Provide operation/status indicators |
| 7 | Stop the machine if something gets stuck | Provide jam detection and automatic shutdown/reversal |
| 8 | Empty the crushed cups easily | Provide removable or accessible collection container |
| 9 | Know when the waste container is full | Provide a container full detection/indicator system |
| 10 | Use the machine for different cup sizes | Design an adjustable or adaptable crushing chamber |
| 11 | Have the machine operate quietly | Design for low-noise crushing operation |
| 12 | Avoid frequent maintenance | Use durable, low-maintenance components |
| 13 | Clean the machine easily | Provide easy access surfaces and removable parts |
| 14 | Use the machine for long periods | Design a reliable system with thermal/overload protection |
| 15 | Minimize electricity consumption | Optimize the motor, transmission and control system for energy efficiency |
| 16 | Move or install the machine conveniently | Provide compact dimensions, suitable |
| 17 | Understand how to operate the machine | Provide intuitive controls and clear operating instructions |
| 18 | Dispose of crushed cups easily | Design the output and collection system for easy transfer/recycling |
| 19 | Start the machine easily | Provide simple start/stop control system |
| Serial No. | Subfunctions | Means 1 | Means 2 | Means 3 | Means 4 |
|---|---|---|---|---|---|
| 1 | Automatic Detection |
 Sensing Paper Cup |
 Bin Full Alert |
 IR sensor |
 ultra sonic sensor |
| 2 | Safety System |
 Emergency Stop |
 Safety Cover |
 Overload Protection |
 Prevents Hand Entry |
| 3 | Garbage System |
 Collecting waste paper Cup |
 Liquid Separation |
 Bag Holder |
|
| 4 | Feed Cup |
 Gravity Funnel |
 Guide Rollers |
 Flap Door |
 Slider Ramp |
| 5 | Crush Cup |
 Motor / Fan Assembly |
 Piston Press |
 Squeeze Rollers |
 Single Rotating Blade |
| 6 | Motor Drive |
 DC Motor |
 AC Motor |
 Stepper Motor |
 Air Cylinder |
| Serial No. | Subfunctions | concept 1 (ROHIT) | Concept 2 (Maheen) | Concept 3 (Bhargavi) | Concept 4 (Harshita) | concept 5 (Neel) |
|---|---|---|---|---|---|---|
| 1 | Automatic detection | Ultrasonic sensor | Camera | IR sensor | Proximity sensor | Photoelectric sensor |
| 2 | Safety system | Emergency stop button | Lid safety interlock | Magnetic safety doorlock | Smart control panel | Motor overload |
| 3 | Garbage system | Automatic lid | Multiple compartments | Vertical feeding chute | Removable garbage bin | Pull out drawer indicator |
| 4 | Feed cup | Circular feed cup | Automatic feeding cup | Small funnel shaped cup | Adjustable feed cup | Gravity flap door |
| 5 | Crush cup | Rotating blade crushing | Twin roller crushing | Vertical crushing chamber | High efficiency grinding disc | Piston press |
| 6 | Motor drive | DC geared motor | Brushless DC motor | Vertical DC geared motor | Smart BLDC motor | AC Induction Motor |