1 / 11

ECE 4884 : Senior Design

ECE 4884 : Senior Design. LightSaVers. Outline. Project Overview. Automated light balancing via remote blinds and dimmers Centralized, low-power wireless network Low bandwidth information feed via remote sensor network LED-based light fixture. Medium Level Schematic. Cypress PSOC.

sheadon
Download Presentation

ECE 4884 : Senior Design

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. ECE 4884 : Senior Design LightSaVers

  2. Outline

  3. Project Overview • Automated light balancing via remote blinds and dimmers • Centralized, low-power wireless network • Low bandwidth information feed via remote sensor network • LED-based light fixture

  4. Medium Level Schematic Cypress PSOC Cypress PSOC Cypress PSOC

  5. ZigBee Network • Shot range mesh network • Low power - 30mA/3µA • Data rates @ 250kbs

  6. Network Perfomace • Light sensor sampling directly via ZigBee • UART between microcontroller & ZigBee • Central controller makes decisions and sends commands for light & blind modules DAC Dimming Digital outputs Motor control TX ADC Cypress PSOC ZigBee ZigBee Light sensor RX UART @ 19200 baud

  7. Design Problems • Unsuccessful at getting UART to work on PIC • Light dimming via current modulation required a DAC not available on PIC Tradeoffs • PIC replaced by more expensive cypress PSOC • Cypress PSOC provided an easy UART interface along with DAC

  8. Status Quo • Transmitted sensor values using ZigBee • Implemented light dimming via DAC on PSOC • Controlled stepper motor using digital outputs on PSOC • Transmitted and decoded commands from the central controller

  9. Future Work • Implement solution in Aware home and tweek performance • Replace PSOC with cheaper compatible microcontroller • Reduce design to minimum possible microcontroller • Replace Maxstream XBee with cheaper ZigBee modules

  10. Testing • Cover sensors and simulate the flowchart • System will not be run for a long period of time due to robustness issues • Blinds may be operated manually pending mechanical mounting of the stepper • The power savings will be tested by measuring the current flowing to the light fixture vs. that of an incandescent light bulb

  11. Questions?

More Related