25-08-2017, 09:32 PM
ZIGBEE
ZIGBEE.pptx (Size: 521.85 KB / Downloads: 9)
INTRODUCTION
ZigBee is a wireless technology designed for control and sensor networks.
It defines a set of communication protocols for low-data-rate Short-range wireless networking.
Named after erratic, zig - zagging patterns of bees between the flowers.
Operates in Personal Area Networks (PAN’s) and device-to-device networks.
Based on the IEEE 802.15.4 Standard(LR-WPAN).
Products created by the ZigBee Alliance.
Operating frequency band
868 MHz in Europe,
915 MHz in the USA and Australia, and
2.4 GHz in worldwide.
ADVANTAGES
FREQUENCY BAND :- Zigbee operate in 2.4 GHz spectrum (unlicensed), 915 MHz and 868 MHz.
POWER :- Zigbee is upto 10 times more energy efficient than Bluetooth.
BATTERY – LIFE :- Zigbee is designed to run for 6 months to 2 years.
RANGE :- Zigbee allows a maximum range of 75m.
DATA RATE :- Low data rates about 20 -250 kbps.
COMPONENT COST :- The cost of zigbee`s components is lesser than other technologies.
TIME TO WAKE UP :- Zigbee device can wake up and get a packet across a network connection in around 15 milliseconds
DISADVANTAGES
Replacement with zigbee compliant appliances can be costly.
No more secure than a typical 802.11 wireless network.
Zigbee compliance certification for appliance manufacturers mandates lithium battery use.
Can be confusing at first for the home owner.
Zigbee compliant manufacturers slow to make an appearance on the market.
CONCLUSIONS:
ZigBee has been developed to meet the growing demand for capable wireless
networking between numerous low-power devices. It offers long life battery
extension and proved to be better wireless technology device. ZigBee demands
low data rate applications, and long battery life capability