LC Technology

OL Sample Design Folder

Assessment

Design Folder: 40%

Artefact: 60%

Project 50% Exam Paper 50%

Sample Design Folder

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

NCCA advice document to DES

• 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

Analysis, Research and Investigation

Research existing solutions

PersonalSafety

Children Elderly

Handicapped

Single People

Analysis, Research and Investigation

HearingDisabilit

y

Elderly

Wheelchair Bound

Handicapped

Analysis, Research and Investigation

Visually Impaired

Associated Problems for Hearing Impaired:

• awareness of caller - door bell / knocking! • telephone ringing• television / radio• cooker alarm• smoke alarm• intruder• dog barking

Analysis, Research and Investigation

All sound based

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

Analysis, Research and Investigation

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: 5 5 5 5 5 5 5 5 5 5 5

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

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

Optimum SolutionI have decided to select idea 1 as the design I will make. 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

Design Ideas & Selection of Optimum Solution

Circuit 1

Circuit 2 Circuit 3

Design Ideas & Selection of Optimum Solution

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

Components Quantity

LEDs 2

10k resistor 1

Push to make switch 2

Push to break switch 1

Battery 1

Thyristor 1

On/Off switch 1

Part Material Measurements Classes

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

5

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.