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Networked HVAC Controller

Networked HVAC Controller. Bradley University Department of Electrical & Computer Engineering By: Ed Siok Advisor: Dr. Malinowski. Topics. Summary Detailed Description System Block Diagram Software Description Current Status Equipment and Schedule. Summary.

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Networked HVAC Controller

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  1. Networked HVAC Controller Bradley University Department of Electrical & Computer Engineering By: Ed Siok Advisor: Dr. Malinowski

  2. Topics • Summary • Detailed Description • System Block Diagram • Software Description • Current Status • Equipment and Schedule

  3. Summary • Heating, Ventilation, & Air Conditioning Controller (HVAC) • Separate Zones • Network Interface

  4. Topics • Summary • Detailed Description • System Block Diagram • Software Description • Current Status • Equipment and Schedule

  5. System Block Diagram

  6. Inputs • Inputs – Temperature Sensors • DS1820- Dallas Semiconductor Digital Sensor

  7. Outputs • Outputs • Furnace • Air Conditioner • Zoned Dampers

  8. Internet / Network • Network Interface • Input & Output – All interaction with users

  9. Topics • Summary • Detailed Description • System Block Diagram • Software Description • Current Status • Equipment and Schedule

  10. Software • Two Purposes • HVAC controller • Web Server

  11. HVAC Software • Three Modes of Operation • Heat, Cool, Off

  12. Web Server

  13. Topics • Summary • Detailed Description • System Block Diagram • Software Description • Current Status • Equipment and Schedule

  14. Completed Tasks • Familiarization with board • Two methods of Uploading Code • dBug Monitor using Hyperterminal • Implementation of TCP Stack • OpenTCP and RTXC Operating System • uClinux

  15. uClinux! • A version of Linux refined for use on microcontrollers without memory management • Included features: • File System Support • Multithreading • TCP Stack • Web Server

  16. uClinux! • Challenges: • Maneuvering through Linux • Programming for a Linux Device • Access to all hardware • Compiling a new OS with updated software

  17. Topics • Summary • Detailed Description • System Block Diagram • Software Description • Current Status • Equipment and Schedule

  18. Equipment • CML-5282 LITE Microcontroller Board • Axiom Manufacturing • Dallas DS1820 Digital Temperature Sensors • Or similar serial communication sensors

  19. Schedule for Spring • Weeks 1-4 • Create Hardware Drivers for the Interfaces • Research and Create Test Programs on Linux and port them to the Microcontroller • Create the web interface for the web server and test the inputs and outputs

  20. Schedule • Weeks 5-8 • Create HVAC controller code • Create code to interface with digital sensors with serial communication • Implement all of the code with Linux on the board

  21. Schedule • Weeks 9-12 • Test and Debug all software and ensure that the project is working correctly • Add any additional features • Write final report • Create final presentation

  22. Additional tasks • Implement web server / HVAC controller using OpenTCP and simple RTOS • Expand HVAC code to include two stage heating, and optimization of usage • Implement a basic VPN server using the microcontroller

  23. Any Questions?

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