06-04-2012, 05:09 PM
MICROCONTROLLER BASED AUTOMATION
83MICROCONTROLLER-BASED-POWER-THEFT-IDENTIFICATION.pdf (Size: 98.75 KB / Downloads: 31)
INTRODUCTION:
Electricity is the modern man’s most convenient and useful form of
energy without which the present social infrastructure would not be feasible. The
increase in per capita production is the reflection of the increase in the living
standard of people. When importance of electricity is on the increasing side, then
how much should theft of this energy or illegal consumption of power from the
transmission lines be averted? Power theft has become a great challenge to the
electricity board.
MICROCONTROLLER BASED AUTOMATION:
Embedded systems - a combination of software, hardware and
additional mechanical parts that together forms a component of a larger system, to
perform a specific function. It’s a technology, characterized by high reliability,
restricted memory footprint and real time operation associated with a narrowly
defined group of functions.
MODES OF THEFT:
It has been seen that there are 4 common methods of power
theft as given below :-
Bogus seals and tampering of seals.
Meter tampering, meter tilting, meter interface and
meter bypassing.
Changing connection.
Direct tapping from line.
Due to introduction of modern electronic metering equipments, power
thieves are utilizing more technological methods.
RECEIVING SECTION:
The FM signal that are transmitted from the transmitter section
travels through the power line and reaches the receiving section, where these
signals are tapped individually. The basic components in the receiver section are :-
Intermediate Frequency Transformer
Clipper
Phase locked loop
THE NEED FOR MICRO CONTROLLER:
The necessity of using micro controller arise from the fact that, for
a product design which requires only a simple system, the use of microprocessor
is undesirable. The micro controller identifies all the function needed to make up
a simple microprocessor system and puts as many as possible in a single IC. The
micro controller used in this project is AT 8951, which is a 40 pin dip IC.
CONCLUDING LINES:
This paper is designed for industrial purpose, but it can be extended
to domestic purposes also. It gives a big hand to vigilance squad to control theft
quickly and easily. With its usage, the crime of stealing power may be brought to
an end and thereby a new bloom may be expected in the economy of our
motherland. The prime limitation of the system in the present form is the distance
coverage.