POWER LOSS DETAILS OF SOME REGIONS OF TAMIL NADU
BYT.CHANDAN
G.SUNILV.PRAVEEN KUMAR
Bogus seals Meter tampering Meter bypassing Changing connection Direct tapping from line Check meter, remote meter readers , tamper alarms.
Revolution-pulses. Pulses-modulated , multiplexed. Individually tapped at receiver. Processing by microcontroller.
DIFFERENCE OCCURS ALARM
The sensing unit Phase locked loop Cmos analog switch Buffer Intermediate frequency transformer
Intermediate frequency transformer(100-300) khz
Clipper phase locked loop
Disc rotation-energy consumed. Receiver-carrier. Pulse-counter. Counts six pulses and gives an output
for unit consumed. Counter-decimal counter-display unit.
Final and most important one. Manipulation and processing work-
microcontroller. Identification and indication- alarm.
NEED FOR MICRO CONTROLLER Simple system-microprocessor is
undesirable. interfacing.
AT89c51 is a 40 pin dip IC.
EPROM(electrically programmed read only memory) of 4 kilobytes.
Ram of 128 bytes. Input output
ports(p0,p1,p2,p3).
Set value-p1 by means of DIP switches. Pulses from energy meter are given to
respective pins of port 3. Alarm to 39th pin of IC. No external memory. Program- continuous counting of units and
simultaneous comparisions error predicted-alarm.
Digital meter–simplifies our work. Highly accurate , low loss and economical
one. Helps vigilance squad to control theft easily
and quickly. Extent of theft can be identified. Compact size, reliability, lightweight for quick
operation and high accuracy makes the system more effective.
Distance coverage-repeaters. atmospheric noises. A maintenance staff of highly skilled
and high trained personnel are needed.
Our idea is a boon to electricity board.
The crime of stealing power may be brought to end and there by a new bloom may be expected in the economy of our motherland.