1 / 23

Office of the Dean of Students Automated Bookshelf (ABS) Design Review

Office of the Dean of Students Automated Bookshelf (ABS) Design Review. February 25, 2010 ARMS 1098-C. ODOS. Team Introduction. ODOS. Team Leader Ed Brown – Junior, EET Team Members Nathan Myers – Sophomore, EET Ben Ross – Junior, CE Lisa Li – Junior, EE. Community Need. ODOS.

ehren
Download Presentation

Office of the Dean of Students Automated Bookshelf (ABS) Design Review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Office of the Dean of StudentsAutomated Bookshelf (ABS)Design Review February 25, 2010 ARMS 1098-C ODOS

  2. Team Introduction ODOS • Team Leader • Ed Brown – Junior, EET • Team Members • Nathan Myers – Sophomore, EET • Ben Ross – Junior, CE • Lisa Li – Junior, EE

  3. Community Need ODOS • How does this help • Disabled student in wheelchair was having problems storing his books on his bookshelf • How has the design changed • Started out with linear model • X and Y movement would be necessary • User characteristics considered in design • Reach considerations • Weight considerations • Why the need should be addressed • Model for other groups • Ease of use

  4. Goals of the ABS ODOS • What aspects of the need will the project address? • Ease of use, control and replication • Design with the user in mind • Design for a 200 pound shelf load capacity • Fit ADA Standards for reach-ability • A finished prototype

  5. Project History Old ABS design ODOS • Origins of project • Has been around since Spring 2006 at least • Existing design idea • Movement in y-direction only • Outdated circuitry • Design and size do not fit current design criteria

  6. Project History • Stationary Unit • Moving Shelf Section • Track Actuator • Rails • Sensors • Shelf Stabilizers 3 1 2 4 5 6 ODOS • Overview of old prototype • Shelf is attached to a track actuator mounted behind the moving section

  7. Project History Where we come in Top: 200 lb actuator Bottom: 400 lb actuator ODOS • Last semester • Designs were considered • 1:4 scale prototypes were built • Actuator Discussions • 200 lb and 400 lb actuators • 200 is design load • 400 is too slow • Prototypes were tested for design • A full scale model of the shelf was built • No moving parts • Wood only

  8. What have we done? ODOS Design considerations 1:4 scale prototypes built Full scale model in construction Design requirements Design considerations

  9. Our Decision ODOS • Actuator System • We tore apart the old prototype model for parts • Began to build full scale prototype with foam board • We came across some issues in the process • The challenges we encountered helped us to come up with a new decision.

  10. Revelations ODOS • Force ratio required to life Actuator model would be about 800 pounds • Unrealistic and pricey • Combination of models • New model will be a “double actuator” • Similar to the claw vending machines • Allows for small movement in the X direction and 37” of movement in y direction (to shelf edge and floor)

  11. New Design Idea • Second half of the semester focused on a 4 way x-y design • Used 2 different types of actuators • New design moves bookshelf in 2 directions • Provides most space and is a simple design • Bookshelf itself will have to be modified • There will be approximately 8 inches cut off of the shelf ODOS

  12. Parts ODOS • Needed a small actuator to push shelf out • Small 12 inch stroke actuator • 100 pound capacity (more than enough) • Drawer Slides • For up and down movement • 24 inch stroke, 200 pound capacity

  13. Shelf Movement ODOS

  14. Shelf MovementStability ODOS • As designed, there are stability problems • Designed “L Brackets” for connecting actuator and track system • Mild steel • Deigned as to screw through actuator • Designed steel plates for stability • Meant to connect shelf to tracks • So that all components can move as a system • 1020 mild steel

  15. Shelf MovementControls Controls ODOS • 2 total buttons for movement • One up, one down • Simple • Down makes the system go out and down • Vise versa for up • Originally ran into a 5 prong power source • This is not needed and can be modified accordingly

  16. Shelf MovementRelay Theory Relay Safety Switch Power Supply ODOS • What is a relay? • The relays govern the motion of the system • Connected to the power supply then to the system control • Also connected to safety system • Safety switches cut all power when triggered

  17. Shelf MovementRelay Theory ODOS

  18. Challenges ODOS • Project must be safe • No tipping • Must have at least a 200 pound capacity • Minimize pinch points • Must have a “kill switch” • No slipping points

  19. Challenges ODOS • Electrical issues • Previous team did not keep circuitry diagram • Outdated technology • Can be compressed- not a priority • Many components were not working properly • Actuator did not function • Bad connections in circuitry • Problem temporarily fixed

  20. Challenges ODOS

  21. Challenges System integration Efficient movement and storage of parts How to do integrate using one button for 2 directions Other problems

  22. What’s left? ODOS Safety Systems System Integration Delivery of Prototype User Manual Report

  23. Questions?

More Related