  Although Cellular communication is getting more and more popular in our
country present days, but its network improvement is hampered by the crysis of
electricity. The recent decision of present Government is that they will not
provide any electricity from the grid to any new BTS rooms of any Celluler
operator companies like Grammen Phone, Robi, Airtel etc. These companies have
to develop their own power stations either by using generators or by developing
solar plants. Now a days most of the BTS rooms, that the cellular operators are
installing with a generator and 48 volt battery backup. So for the
synchronisation of the operation of PDB, Generator and battery, they require a
device called Voltage Temperature Monitoring System or VTMS. It is a
Microcontroller based controlling unit which controlls the operation of
generator and battery when PDB in not available in the BTS room.
