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Home Monitoring with Wireless Sensor Networks

Home Monitoring with Wireless Sensor Networks. Jesse Phelps – Senior Developer , LashBack. Agenda. ZigBee XBee Basic Overview Adapter Kill A Watt Motion Detector (PIR) XBee frame description Other uses. Wireless Sensor Networks. ZigBee. Personal Area Network Built on IEEE 802.15.4

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Home Monitoring with Wireless Sensor Networks

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  1. Home Monitoring with Wireless Sensor Networks Jesse Phelps – Senior Developer, LashBack

  2. Agenda • ZigBee • XBee • Basic Overview • Adapter • Kill A Watt • Motion Detector (PIR) • XBee frame description • Other uses

  3. Wireless Sensor Networks

  4. ZigBee • Personal Area Network • Built on IEEE 802.15.4 • Adds authentication & encryption

  5. ZigBee Stack

  6. XBee

  7. XBee Specs • Power output: 1mW • Indoor/Urban range: Up to 100ft (Pro 300ft) • Outdoor/LOS range: Up to 300ft (Pro 1mi) • RF data rate: 250kbps • Operating frequency: 2.4 GHz

  8. XBee Adapter

  9. Adapter Pinout

  10. Wireless Kill A Watt

  11. Parts Kit

  12. Schematic

  13. Assembled Kit

  14. Assembled Kit

  15. Assembled Kill A Watt

  16. Assembled Kill A Watt

  17. Motion Detector • Passive Infrared (PIR) • Pryoelectric Device • Detects change in the infrared profile

  18. Pyroelectric Devices • Voltage output with temperature changes • Temperature change modifies atom position • Changes polarization • Gives rise to voltage

  19. Fresnal Lens

  20. Frame Description • 7E Start Delimiter • 00 0C Length Bytes • 83 API Identifier for 16bit DIO Data • 56 78 Source Address • 2E RSSI Value bytes • 00 Option byte • 02 Sample Quantity Byte

  21. Frame Description continued • 00 18 Channel Indicator • 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 • 00 18 Sample Data (1 high, 0 low) • 36 Checksum

  22. Other uses • Wireless temperature sensor • .NET Micro

  23. Links • http://www.digi.com/ • http://www.ladyada.net/ • http://www.p3international.com/ • http://www.devicesolutions.net/

  24. Sponsors

  25. Questions? @jessephelps http://www.jessephelps.com/

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