ZIGBEE TECHNOLOGYWireless Control That Simply Work

Presented By :- Sidhant RajElectronics & Communication Engineering YuvarajComputer Science Engineering

Zigbee is a Ad-hoc networking technology for LR-WPAN.

Based on IEEE 802.15.4 standard that defines the PHY and MAC layers for ZigBee.

Low in cost, complexity & power consumption as compared to competing technologies.

Data rate touch 250 kbps for 2.45 Ghz, 40 kbps for 915 Mhz and 20 kbps for 868 Mhz band.

WHAT IS ZIGBEE ?

Worlds most common frequency Bands

No wireless network standard that meets the unique needs of sensors and control devices.

Wireless system don’t require high data rates but require low cost and very low current drain.

Proprietary system are creating significant interoperability problems with each other and with newer technologies.

Why ZigBee is needed ?

Low power consumption. High density nodes per network. Simple protocol, global implementation. Network flexibility. Small size-less than 9mm*. Hundreds of device per network.

Features of ZigBee.

Data rates of 20 kbps and upto 250 kbps. Star or peer-to-peer network topologies. Support for Low Latency Devices. Handshaking. Low power usage consumption. 3 frequencies bands with 27 channels. Extremely low duty-cycle (<0.1%).

ZigBee General Characteristics.

Network Architecture

ZIGBEE LAYERS

All device have IEEE addresses. Short addresses can be allocated. Addressing modes: Network + Device identifier (star) Source/destination identifier (peer-peer) Source/ destination cluster tree + device

identifier (cluster tree)

Device Addressing

Comparison of ZigBee with Others

Application Sector

ZigBee will play a vital role in the mass adoption of cost effective, low power, mesh networking technology for monitoring and control applications, based on an open global standard.

Near future more flexibility and cost savings for consumers and greater control over household appliances.

Used for campus-wide electrical and security systems for a single computer.

Conclusion