SOLAR PV CONTROL SYSTEM.pdf
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It is designed for low power applications, it fits well into embedded systems and<br />
those markets where reliability and versatility are important but a high bandwidth<br />
is not required.<br />
The table below shows the comparison between the various wireless technologies<br />
and their application<br />
FOCUS<br />
APPLICATION<br />
Zigbee and<br />
802.15.4<br />
Monitoring<br />
and Control<br />
Email: david.irungu@stu.kuct.ac.ke<br />
GSM/GPRS/CDMA 802.11 BLUETOOTH<br />
Wide area voice<br />
and data<br />
High speed<br />
internet<br />
Device<br />
connectivity<br />
BATTERY LIFE years 1week 1 week 1 week<br />
BANDWIDTH 250 kbps Up to 2 mbps Up to 54<br />
TYPICAL<br />
RANGE<br />
ADVANTAGES Low power<br />
mbps<br />
100+ meters Several kilometres 50-100<br />
cost<br />
Table 3: Zigbee Comparison<br />
Existing<br />
infrastructure<br />
meters<br />
Speed<br />
ubiquity<br />
Reason for the application of Xbee module in this system<br />
a. Large number of nodes/sensors<br />
b. Very low system/node costs<br />
c. Operation for years on inexpensive batteries<br />
d. Reliable and secure links between network nodes<br />
e. Easy deployment and configuration<br />
f. Global solutions<br />
720 kbps<br />
51<br />
10-100 meters<br />
Convenience<br />
g. ZigBee technology protocol has proven that NO message is lost on transfer of data.<br />
2012
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