1 / 32

LED Traffic Lights 4000

LED Traffic Lights 4000. Adan Corral, Chris Brauweiler, Antonio Porto. ECE445 – Senior Design Project. Group 3. April 30 th , 2010. LED traffic lights are “too efficient” Incandescent bulbs produce much more heat Solve the problem and maintain energy savings. Introduction.

moke
Télécharger la présentation

LED Traffic Lights 4000

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. LED Traffic Lights 4000 Adan Corral, Chris Brauweiler, Antonio Porto ECE445 – Senior Design Project Group 3 April 30th, 2010

  2. LED traffic lights are “too efficient” Incandescent bulbs produce much more heat Solve the problem and maintain energy savings Introduction *http://www.impactlab.com/2009/12/17/led-traffic-lights-causing-more-accidents/

  3. Features Design Hardware Software Testing Improvements Actual Engineering Solution Outline

  4. Keeps snow from accumulating on traffic lights Maintains energy savings over conventional bulbs Low-cost Easy implementation Low maintenance Benefits

  5. Solar panel to minimize operating costs Grid as a back-up Autonomous System can control several light bars Long lifetime Features *http://www.msnbc.msn.com/id/34436730/ns/us_news-life/

  6. Temperature data Snowfall rate Assumptions

  7. Design Heating Element Power Management Energy Storage/Collection Detection Control

  8. Design - Defrosting Nichrome (heating element) Glass plate 36 gauge ( )

  9. Design - Defrosting

  10. Design – Power Management • Solar panel / battery interaction • Charge Controller • Sources of power: • Battery (11.6 – 13.0Vdc) • Grid (12.6Vac, 10.3Vdc)

  11. Design – Power Management • Switching between battery and grid • Controlled through an inverter

  12. Design – Power Circuit

  13. Design – Battery *Masters, Gilbert M. Renewable and Efficient Electric Power Systems

  14. Design – Battery *Masters, Gilbert M. Renewable and Efficient Electric Power Systems

  15. Design – Battery • Average (expected) current with Nichrome on:

  16. Design – Solar Panel • Power Consumption: • Power Production: • 3 hours of full solar insolation • At least 14.5V

  17. Design – Software

  18. Awesome Box

  19. Testing – Power Consumption • The measured power consumption is: • Energy consumption in a 14hr period:

  20. Testing – Solar Panel • 10Ah battery boost charged in ~45min @ 3.5A

  21. Testing – Power Management

  22. Testing – Power Management

  23. Testing – Temperature Sensor *From LM235 Datasheet

  24. Testing -Detection • Nichrome On: .420V • Nichrome Off: .440V

  25. Testing - Nichrome

  26. Cost Analysis • Fixed costs (significant contributions only): • Panel + battery + PIC + Transformer + Charge Controller = $408 • Variable costs (significant contributions only): • 5ft Nichrome + Photodiode + Transistor + (1/3) Multiplexer = $4.30 • Can be reduced significantly with “all grid” implementation

  27. Use of relays to control Nichrome Simpler microcontroller Increase power capabilities Improvements

  28. All grid solution Expand to service entire intersection More Nichrome Real World Implementation

  29. Cost of all grid solution: Fixed: ~$25.00 Variable: ~$5.00 Cost to service 12 bar intersection (36 lights): $205.00 Cost using air scoops ($20.00 ea): $720.00 Real World Implementation *http://www.ledsmagazine.com/news/7/1/4

  30. Prof. Scott P. Carney Ms. Christyn Collum Mr. Juan Medina Prof. Emerson D. Nafziger Parts Shop and Machine Shop Staff Mr. Ali Bazzi Mr. Kevin J. Colravy Acknowledgments

  31. Questions?

More Related