ED2‐CD - U-Div-Engg-Exploration-Odd-26-27/Repo-14 GitHub Wiki

ED2-CD: Concept Design (Team 14)


Activity 1: User vs. Designer Perspectives

S.No. Functions from User Perspective Functions from Designer Perspective
1 Takes in daily kitchen waste easily. Provide an accessible input hopper with sufficient volume capacity.
2 Breaks down large pieces of food. Implement a mechanical shredding or grinding mechanism.
3 Mixes the waste automatically. Incorporate an automated motor-driven agitator or rotating shaft.
4 Does not produce bad smells in the house. Integrate a carbon-based odor filtration and ventilation system.
5 Safe to use (won't hurt hands when open). Install safety interlock switches that cut power when the lid is opened.
6 Turns waste into compost quickly. Optimize internal heating and aeration to accelerate microbial decomposition.
7 Easy to remove the finished compost. Design an accessible, easily removable discharge tray.
8 Operates quietly without disturbing the house. Utilize acoustic dampening materials and low-decibel motors.
9 Does not use too much electricity. Optimize heating elements and motor duty cycles for energy efficiency.
10 Easy to clean the inside of the machine. Use non-stick, corrosion-resistant internal materials.
11 Tells the user when the compost is ready. Implement sensor-based indicators (time/moisture) with an LED UI alert.
12 Prevents the compost from becoming too soggy. Incorporate a leachate (liquid) drainage and collection mechanism.
13 Fits easily in a kitchen or balcony (compact). Optimize internal component layout to minimize the overall footprint.

Activity 2: Function Tree

Activity - 3 : Morphological Chart

Serial No. Subfunctions Means 1 Means 2 Means 3 Means 4
1 Feed organic waste Manual feeding Hopper Conveyor Rotating drum inlet
2 Store/contain waste Open container Closed bin Cylindrical chamber Rectangular chamber
3 Size reduction Manual cutting Rotary blade Crusher Shredder
4 Provide aeration Natural ventilation Perforated chamber Air blower Ventilation fan
5 Provide heat Natural decomposition Electric heater Heating coil Solar heating
6 Control operation Manual switch Timer Relay control Arduino/microcontroller
7 Supply electrical power Battery Adapter Solar panel AC mains
8 Indicate machine status LED Buzzer LCD display Digital display
9 Speed control Manual switch PWM controller Variable resistor Microcontroller
10 Safety mechanism Fuse Emergency Switch Motor overload protection Safety cover
11 Odour control Vent holes Activated carbon Biofilter Exhaust system