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Preliminary Detailed Design

Table of Contents 1 Team Vision for Preliminary Detailed Design Phase 2 Updated Engineering Requirements 3 Prototyping, Engineering Analysis, Simulation 4 Schematics & Drawings 4.1 Interface Board Diagram 4.2 Power Supply Diagrams 4.3 Enclosure Concept Designs 4.4 Smart Phone Apps Flow Charts 5 Bill of Material (BOM) & Budget 6 Test Plans (Elijah) 7 Risk Assessment (Zhengguo) 8 Plans for next phase

Team Vision for Preliminary Detailed Design Phase

Accomplishments:

• Selected SBC
• Selected two candidates for testing: (see below)
• Ordered prototyping/testing materials
• Developed Test Plans
• Coordinated with client; determined that a battery will not be included in the design.
• Coordinated with client; determined that a portable or integrated projector would prove useful. Future testing will determine feasibility of integrated projector.
• Created preliminary BOM and budget for project
• Developed software flowcharts to help visualize how applications on SBC and smartphone will function
• Came up with plan to mitigate risk of calling 911 with Android smartphone. Wanted to test plan with prototype phone but did not have time; this will happen during next phase.

Unaccomplished goals:

• Begin feasibility experimentation with prototyping materials
• Test feasibility of mini projector that could be built-in to the design

Updates to the System-Level Design since last Design Review:

• No Battery
• Portable projector is a definite. Integrated is another possibility.
• New vision for enclosure... Internal components would be mounted on boards made from a non-conductive material (acrylic sheet or similar), which stack inside the enclosure to save space.
• Power control/distribution system, instead of individually powered components

Updated Engineering Requirements

Link to the original document is here: Engineering Requirements (.xlsx)

Prototyping, Engineering Analysis, Simulation

Ordered various materials to begin prototyping and experimentation with. Materials did not arrive in time to begin experimentation with, so a large portion of the time between this design review and the next will be spent testing feasibility using the purchased components.

• Smartphone
• iPod Touch
• Wired flip phone
• Phone Line Simulator
• Single Board Computer

Schematics & Drawings

Interface Board Diagram

Power Supply Diagrams

Enclosure Concept Designs

Smart Phone Apps Flow Charts

Bill of Material (BOM) & Budget

Test Plans (Elijah)

Risk Assessment (Zhengguo)

Link to the original document is here: Risk Assessment (.xlsx)

Plans for next phase

Dania:

• Learn how to use AutoCad Electrical
• Draw power supply diagrams (terminal blocks, xfmr, ac/dc converter, etc.)
• Revise power supply strategy as needed
• Update BOM and Budget

Elijah:

• Teach Dania how to use AutoCad Electrical
• Work with Alex and Jung to test strategy for disabling Android cell communication on prototype phone
• Revise software flowcharts for SBC and Phone apps
• Create storyboarding images (sample screenshots of digital interfaces on devices)
• Revise test plans

Zhengguo:

• Work with Alex and Elijah to test strategy for disabling Android cell communication on prototype phone
• Create full design and parts list for Interface Module

Grace:

• Research & recommend option to team: enclosure made in-house vs purchased and built-out.
• Design internal mounting system for components; draw fully dimensioned diagrams with components included
• Work with Dania to begin 3d-printing test models, brackets, etc. for internal mounting system

Alex:

• Finalize use cases & draw them in Visio
• Test mini projector that could be physically integrated for feasibility
• Work with Alex and Jung to test strategy for disabling Android cell communication on prototype phone
• Determine how data can best be passed between SBC and Phone via Bluetooth

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