LC Technology OL Sample Design Folder Assessment

LC Technology OL Sample Design Folder

Assessment Project 50% Design Folder: 40% Artefact: 60% Exam Paper 50%

Sample Design Folder NCCA advice document to DES 1. Analysis, research and investigation 2. Overall management of project 3. Design ideas & selection of optimum solution 4. Sketches & drawings for manufacture 5. Environmental impact 6. Materials and production planning 7. Product realisation 8. Evaluation and critical reflection 9. Presentation and ICT

Analysis, Research and Investigation • Choose an area for research. • Research existing solutions. • Statement of candidate’s brief and specifications.

Analysis, Research and Investigation I will research the following topics: • Personal Alarms • Burglar Alarms

Analysis, Research and Investigation Research existing solutions

Analysis, Research and Investigation Elderly Children Personal Safety Handicappe d Single People

Analysis, Research and Investigation Hearing Disabilit y Elderly Handicapped Visually Impaired Wheelchair Bound

Analysis, Research and Investigation Associated Problems for Hearing Impaired: • awareness of caller - door bell / knocking! • telephone ringing • television / radio • cooker alarm • smoke alarm All sound • intruder based • dog barking

Analysis, Research and Investigation Alarm integrated into TV Remote Control

Analysis, Research and Investigation My Design Brief Design and manufacture a device which will signal to a hearing impaired person that someone is at the door. An output light will indicate when someone is at the door. The device will also include an alarm to indicate that an intruder has entered the house.

Analysis, Research and Investigation My Specifications 1. The device should be operated by a normal door-bell push button 2. When the button is pressed the LED will flash until the device is reset 3. It should be easy to change the battery 4. The product / device should also hold a TV remote control 5. I should be able to make the project in the Technology room 6. The electronic parts should be visible and accessible to the examiner 7. The product should be strong and withstand sudden shocks 8. The product should be environmentally friendly

Overall Management of the Project • Analysis of available resources • Time and budget constraints • Proposed timeframe/Gantt chart etc.

Overall Management of the Project Gantt Chart Class Periods: Analysis, research & investigation Overall management of project Design ideas & selection of optimum solution Sketches & drawings for manufacture Environmental impact Materials and production planning Product realisation Evaluation & critical reflection 5 5 5

Design Ideas & Selection of Optimum Solution • Three design ideas • Annotated sketches • Select one of the three ideas • Justify selection

Design Ideas & Selection of Optimum Solution Design Idea 1

Design Ideas & Selection of Optimum Solution Design Idea 2

Design Ideas & Selection of Optimum Solution Design Idea 3

Design Ideas & Selection of Optimum Solution I have decided to select idea 1 as the design I will make the last version where there is a housing to contain the circuit as shown below in the sketch.

Design Ideas & Selection of Optimum Solution I chose this idea because: • It does not have too many parts • All the parts are quite big so they will be easy to make • Acrylic is easy to shape and bend • A light will flash if an intruder enters the house • Another light will flash to show someone is at the door • It contains an electronic system • It will hold a remote control

Design Ideas & Selection of Optimum Solution Circuits • Outline how circuit works • Pros • Cons Circuit 2 Circuit 1 Circuit 3

Design Ideas & Selection of Optimum Solution My circuit design will use a combination of circuit 2 and circuit 3.

Design Ideas & Selection of Optimum Solution I chose this circuit because: • It will show when someone is at the door & when the door is open. • All the components are in the technology room. • I can use the CNC router to make the PCB board so soldering this circuit will be easier than using strip-board. • I have used push to make and push to break switches before so I am familiar with how they operate.

Sketches & Drawings for Manufacture CAD Drawings

Sketches & Drawings for Manufacture Drawing Instruments

Environmental Impact • Impact of materials and production processes • Product use • Suitability for re-cycling.

Materials & Production Planning Part Material Measurements Housing base Acrylic 110 x 80 x 3 5 Housing top Acrylic 110 x 80 x 3 5 Housing Clear acrylic 270 x 25 x 3 5 Swivel bracket Acrylic 1130 x 13 x 3 3 PCB board Copper clad board 4 Soldering circuit Components Classes 5 Quantity LEDs 2 10 k resistor 1 Push to make switch 2 Push to break switch 1 Battery 1 Thyristor 1 On/Off switch 1

Materials & Production Planning Work Breakdown Structure Diagram

Production Realisation • Sequence of manufacture • Photographic evidence

Production Realisation • Sequence of manufacture • Photographic evidence P. C. B. Layout

Evaluation & Critical Reflection • Testing of final artefact. • Evaluation against brief and specifications. • Comparison of planned schedules and actual schedules. • Suggested modifications with justification.