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Networked HVAC Controller for Efficient Climate Control - Bradley University

Explore the advanced HVAC controller developed by Bradley University's Department of Electrical & Computer Engineering, guided by Ed Siok under Dr. Malinowski's supervision. This project aims to enhance heating, ventilation, and air conditioning (HVAC) systems by incorporating networked interfaces and separate zones for improved efficiency and user interaction. The system employs temperature sensors, digital outputs for furnaces, air conditioners, and zoned dampers. The software includes HVAC control and a web server with multiple operational modes. The project involves working with the CML-5282 LITE microcontroller board, Dallas DS1820 temperature sensors, and creating web interfaces. Scheduled tasks cover the development of hardware drivers, testing programs on Linux, creating HVAC control code, and debugging software. Additional tasks include expanding the HVAC code and implementing a VPN server for enhanced functionality.

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Networked HVAC Controller for Efficient Climate Control - Bradley University

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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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