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 Adds authentication & encryption
ZigBee Stack
XBee
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
XBee Adapter
Adapter Pinout
Wireless Kill A Watt
Parts Kit
Schematic
Assembled Kit
Assembled Kill A Watt
Motion Detector Passive Infrared (PIR) Pryoelectric Device Detects change in the infrared profile
Pyroelectric Devices Voltage output with temperature changes – Temperature change modifies atom position – Changes polarization – Gives rise to voltage
Fresnal Lens
Frame Description 7EStart Delimiter 00 0CLength Bytes 83API Identifier for 16bit DIO Data 56 78Source Address 2ERSSI Value bytes 00Option byte 02Sample Quantity Byte
Frame Description continued 00 18Channel Indicator – Sample Data (1 high, 0 low) 36Checksum
Other uses Wireless temperature sensor.NET Micro
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