ARC Communication Board

Team Members Cortney Ross (ME) – Project Manager Kirk Marquard (ME) Achilles Tziazas (CE) Amy Koster (ID) Rachel Lepkowski (ID) Elizabeth DeBartolo (ME) – Project Guide Daniel Phillips (EE) – Project Guide Stan Rickel (ID) – Project Consultant

Team Organizational Chart Manager: Cortney Ross (ME) Subsystem 1: External Enclosure of LCD Lead Engineer: Cortney Ross (ME) Support: Kirk Marquard (ME) Support: Amy Koster (ID) Support: Rachel Lepkowski (ID) Subsystem 2: Internal Enclosure of LCD Lead Engineer: Cortney Ross (ME) Support: Kirk Marquard (ME) Subsystem 3: Graphical User Interface Lead Engineer: Achilleas Tziazas (CE) Support: Amy Koster (ID) Support: Rachel Lepkowski (ID) Subsystem 4: Arm Lead Engineer: Kirk Marquard (ME) Support: Cortney Ross (ME) Subsystem 5: Computer Components Lead Engineer: Achilleas Tziazas (CE) Subsystem 6: Power Components Lead Engineer: Achilleas Tziazas (CE) Subsystem 7: Speaker Lead Engineer: Kirk Marquard (ME) Subsystem 8: Touch screen Lead Engineer: Achilleas Tziazas (CE)

Project Overview Our customer, Donna, is a mentally handicapped young adult who is in a motorized wheelchair. She has speech disabilities so she needs a special way to communicate with people who don’t know her well. She currently uses a book full of pictures that she and the staff that helps her is familiar with. Last year, a SD project designed a touch screen audio device to help her communicate with new people.

Customer Needs 1.Safety 1.Customer Safety a.No Interference With Wheelchair Controls b.Easily Be Able To Get Out of Way of Customer i.Low Obstruction of Vision c.Custom Enclosure 2.Product Safety a.Fixed to Wheelchair b.Adequate Product Size c.Adequate Product Weight d.Durable and Robust e.Weather Resistant 2.User Friendly 1.Graphical User Interface 2.Picture Based 3.Flow of Components on Wheelchair (Overall System) 4.Customer Requests a.Female Voice Output b.Colorful and Girly Case 3.Convenience 1.Battery a.Easily Charged b.Able To Plug In and Recharge c.Long Battery Life 2.System Must Be Fast 3.Customer a.Left Hand Design b.Antiglare Screen 4.Volume Adjustment for Staff 5.Upgradable By Staff

Current Design: “Big Pink Box”

Embedded Computer Computer of choice: EBC-7040 Reasons: Cheap ($370) Small size Robust construction (absorbs vibrations, cushioned design, fanless operation) ARM9 class processor (high performance & “ultra-low” power consumption) Ready “out of the box” Can come with both Windows CE or Debian Linux Supports up to 1280x1024 resolution Integrated Audio Only weights 0.4kg USB port for LCD Touch Screen

Issues: Slow response time from Embedian.com affects buying all other components (Taiwan) Embedian mentioned in their most recent e- mail that their Windows CE is “not mature yet” There is still the option for Linux for this box though Time is running out! Backup plan: ARK-1370 by Advantech Embedded Computer

LCD Touch Screen LCD chosen: Caltron 12.1 inch Open Frame LCD (FBT-12120) Reasons: Choice of USB or Serial (chosen USB  Plug & Play) Specs allow for 85% humidity Thin design (only 1.45 inches thin) Option of Resistive vs Acoustic Wave (chosen Resistive because of the ease of operation and it is also cheaper) Satisfies desired resolution of 800x600 Weight is O.K. : 1.4kg = 3.3lb Price is around $600 before their educational discount Has drivers for Windows CE and for “popular Linux distributions”

Issues: Caltron is out of these LCDs New shipment coming in approximately 10 days without counting any other delays like issues at the customs  More delays If we have to go back to using Linux, the drivers do not specify which Linux distributions are supported Backup Plan: Use the LCD that is in the “big pink box” LCD Touch Screen

Battery Power Requirements Using: h = 16 hours EBC-7040: Needs a 12V, 32,000 mAh battery LCD Touch Screen: Needs a 12V, 46,720 mAh battery A 12V battery should provide the necessary currents. Issues: Should I add 32,000+46,720 to come up with the desired mAh? Not an electrical engineer  Need more help with electrical engineering aspects of the project (already visited Dr. Slack)

Operating System Reasons: Easier for the current developer to code using Visual Studio  Using previous knowledge.NET is very popular and easy to program Data from companies that develop embedded systems benefit Windows CE Need less developers per project Less “time-to-market” for Windows CE (number of months from design to first shipment) Issues: Issues with Embedian’s Windows CE

Cable connector Current decisions: Looked into using a parallel cable to carry: Audio (sound) Video Power USB to the front panel Results: The only way to find out if it works is to actually implement this ASAP even without having the components (Dr. Slack’s suggestion) Might face issues if a parallel cable is used, due to the reason that video is a high speed signal (Dr. Slack & Dr. Reddy) It can be done but the only way to find out is to try it out

Pictures Under Donna’s Chair

Final Arm Design Assembled View

Final Arm Design Exploded View

Final Arm Design Attached To Sample Wheelchair

Purchasable Arm Hardware Daessy Lockable Frame Clamp LRFA+RTHTM+O3L Lockable Rear Folding Adapter with Tube Mount & Offset Link (requires lock) Fits 7/8” Tube Angle Positioning with Locking Adjustments Quick Release for Complete Removal of Arm. Price : $ (In process of designing a similar component to make from scratch – save money)

Purchasable Arm Hardware McMaster Incremental Angle Hinge P/N 1258A in-lbs Max Torque Price: $ (Could be made from stock save money)

Purchasable Arm Hardware Ball Base Tube Mount U-Bolt Clamp to 7/8” Diameter Tubing Easychair: RM-02c Price : $20.00 Socket Arm Used for Ball bases Easychair : RM-06 Price : $30.00 Ball Base Flat Mount Uses #8 and #10 Screws for mounting Easychair: RM-02 Price: $20.00 All Used for LCD/Laptop Mounting

Standard Arm Push Strength Max Push Force Male Of 5 th Percentile MIL-STD lbs MAX QRI0wnQC&pg=PA610&lpg=PA610&dq =how+much+force+can+a+human+exert &source=web&ots=zw5mm3ASMl&sig=p QFkyIdI056QthbEUKoYYF_rLnY#PPA61 2,M1

Hand Calculations See JPG Images See Excel Spreadsheet

Computerized Stress Analysis Using COSMOS Express to verify Hand Stress Calculations

Stress Comparison To Strait Bar

Hand Sketched Case Designs

SolidWorks Case and GUI Design

Shock Mounting What needs to be shock mounted? Computer to wheel chair Batteries to wheel chair POSSIBLY LCD touch screen to casing Already be accounted for in arm design

Shock Mounting

Thermoforming CJK is aware of our project and is willing to work with us to make a successful case Demonstration at Miller Plastics in PA Awaiting response on what type of plastics that can be thermoformed Looking into polycarbonate, delrin and UHMW polyethylene Need to finalize CAD design to send over to them

Our BIGGEST Concern: OUR WEBSITE IS GONE!!!

Questions.. Comments.. Concerns???