Communication system for controlling smart appliances using power line communication
icrocontroller-based master and slave units are designed with serial ports for communication with a computer and a transmission port to couple the signal to modems at both ends. The programming of the microcontrollers at either endfor formatting the data bits before they are sent down the power...
| Main Authors: | , , , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2006
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/5899/ http://irep.iium.edu.my/5899/ http://irep.iium.edu.my/5899/ http://irep.iium.edu.my/5899/1/01684818.pdf |
| Summary: | icrocontroller-based master and slave units are
designed with serial ports for communication with a
computer and a transmission port to couple the signal
to modems at both ends. The programming of the
microcontrollers at either endfor formatting the data
bits before they are sent down the power line and the
development of software for putting in place the
required master and slave protocols is presented.
Coupling data signals to power line through
interfacing circuits is a challenging task as power line
and the communication system operate at two extremes
-very lowfrequency and high powerfor the power line
while communication is working at very highfrequency
and very low voltage and current levels. Hence, the
coupling circuit to be designed must be capable to
withstand the high power system side in order to
prevent a damage being done to the electronic side of
the communication system. At the same time it must be
reliable enough to make sure that data bits are
transferred on to the power line with high accuracy.
The interfacing circuits are designed and tuned to
frequency contents making the bits of data. The
frequency performance of these coupling circuits is
presented, showing the range a power line can be used
for communication ofsuch data. |
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