1. Webtrain Decoupling Adam Kadolph EE451 Bradley University Advisors: Dr. Irwin, Dr. Schertz Week 9 Monday 2/12

2. 2 Outline Last Week Current Week Voltage Thresholds Software Overview

3. 3 Last Week Designed circuit for Photocell Built Test Track with Sensor –Thanks Nick Coded program to measure and display voltages from circuit Determined voltage thresholds for three states (nothing, coupler, train)

4. 4 Current Week Integrate train controls with sensor program Plan out Automatic decoupling routine Update website

5. 5 Timeline

6. 6 Voltage Thresholds Coupler Detecting State 0.28 – 0.52 V Train Detecting State 0.84 – 5.00 V Nothing Detecting State 0.00 - 0.28 V and 0.52 – 0.84 V Voltage Resolution can be increased later if 20 mV is not sufficient

7. 7 Software Overview Automatic Decoupling Routines –Train detection –Train car count –Train stop –Decouple cars after desired one (wait) –Train move forward pass switch –Train detection –Error correction (Main Track)

8. 8 Software Overview Automatic Decoupling Routines –Train move backward –Train detection –Train stop –Decouple desired car (wait) –Train move forward past switch –Train detection –Error correction (Bypass Track)

9. 9 Software Overview Automatic Decoupling Routines –Train move backward –Couple remaining cars to train –Train stop

10. 10 Questions? The End