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Webtrain Decoupling

This project aims to design a system to automatically decouple cars from the Webtrain upon request, utilizing sensors and digital command control. The progress of the project, timeline, and future goals are discussed.

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Webtrain Decoupling

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  1. Webtrain Decoupling Adam Kadolph EE451 Bradley University Advisors: Dr. Irwin, Dr. Schertz Week 1-6 Monday 11/20

  2. Outline • Project Goals • Introduction • System Operation • Week 1-6 Progress • Timeline of Events • Review Sensors • Where is the Project Going?

  3. Project Goals • The goal of the project is to design a system to automatically decouple cars from the webtrain. • The system will be able to decouple a specific car upon request. • A sensor to detect train position

  4. Introduction • The Webtrain is an N-Gauge Scale model train. • The train is controlled through the Digital Command Control (DCC) System • Packets of data sent to train • Each locomotive has a special receiver circuit built in • The locomotive can decode DCC Signal sent • Several trains running at various speeds in different direction at once

  5. Introduction • The Webtrain Decoupling System is a 4th Generation project for the webtrain. • 2002 Webtrain Built • 2003 Web Interface • 2005 DCC System and Current Sensing • 2006 Decoupling System

  6. System Operation Two modes of decoupling • Manual Mode • User Commands: • Foreward • Backward • Stop • Automatic Mode • User Commands: • Car select for decoupling

  7. Week 1 Progress • Understand Webtrain System • DCC System • Decoupling • Wrote first draft of functional description • Start Website

  8. Timeline – Week 1

  9. Week 2 Progress • Worked on getting DCC system running • Continued work on Website • Turned in first draft of functional description

  10. Timeline – Week 2

  11. Week 3 Progress • Train running through DCC system • Mounted decouple magnet on bypass track • Successfully decoupled several cars from the train using DCC system

  12. Timeline – Week 3

  13. Week 4 Progress • Spent Morning understanding previous years code • Added plenty of comments in code • Afternoon spent working on my own coding • Implemented new menus • Added corresponding function to menus

  14. Timeline – Week 4

  15. Week 5 Progress • Remounted decoupling magnet on bypass lane • Finished coding of manual decoupling aspect of project • Accomplished several decoupling runs • Added weights to trains for improvements

  16. Timeline – Week 5

  17. Week 6 Progress Took measurements of track, train, and decoupler to determine sensor limitation • Researched Optical Sensors • Ambient Light Photo Sensor • Reflective Photo Sensor • Phototransistor • Website Update

  18. Timeline - Week 6

  19. Sensors • Ambient Light Photosensor • Detection of three levels of ambient light • Analog adjustable gain for levels • Digital Output • Dimensions (4.0mm x 3.2mm x 1.1mm) • Reflective Photosensor • Emitter and Detector in one package • Dimensions (3.4mm x 2.7mm x 1.5mm) • Phototransistor • Fall back sensor • Mounted below track

  20. Where is the project going? • Decoupling System • Collision Avoidance • RFID tags

  21. Questions? Comments. END

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