Zigbee

Published by Craig Miles on

Zigbee

  • Developed by Zigbee Alliance
  • IEEE 802.15.4 based specification
  • High level communication protocols
  • Used to create Personal Area Networks (PAN)
  • Uses small low power digital radios
  • Typically used for home automation, medical device data collection, other projects requiring low power & low bandwidth
  • Conceived in 1995, standardised in 2003, revised in 2006

Features of Zigbee

  • Low power
  • Low data rate
  • Close proximity data communications
  • Wireless ‘ad hoc’ network (WANET), which is a decentralised type of wireless network.

Zigbee Advantages (compared with other WPANS, such as Bluetooth & WIFI)

  • Simpler
  • Less expenditure

Zigbee Applications (typical uses)

  • Wireless light switches
  • Home energy monitors
  • Traffic management systems
  • Other consumer & industrial equipment, requiring short communication range & low wireless data transmission rate
Typical Zigbee Performance
  • 10 – 100 meters range (per device), based on line of sight
  • Range dependent on both power output & environmental characteristics
  • Long distance communication possible by passing data through a ‘mesh network’, which allows the data to transfer through ‘intermediate’ devices between zigbee nodes
  • Long battery life, due to low power consumption
  • Secure communication using 128 bit symmetric encryption keys
  • 250 kbit/s, which is suited to intermittent data transmissions, such as from a sensor or other input device.

 

 

 

Categories: Blog

Craig Miles

Craig Miles