Home Monitoring with Wireless Sensor Networks
description
Transcript of 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• 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 Kit
Assembled Kill A Watt
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
• 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
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
Other uses
• Wireless temperature sensor• .NET Micro
Links
• http://www.digi.com/• http://www.ladyada.net/• http://www.p3international.com/• http://www.devicesolutions.net/
Sponsors