Friday, 19 December 2014
SMS BASED PWM SPEED AND DIRE CTION CONTROL OF DC MOTOR USING H-BRIDGE AND GSM MODEM
SMS BASED PWM SPEED AND DIRE CTION
CONTROL OF DC MOTOR USING H-BRIDGE AND GSM MODEM
ABSTRACT:
Nowadays there are
various electronic equipments
available for remote
operation of electronic devices.
But, the main
disadvantage of these
systems is that
they can be operated
only in short
ranges and also
less reliable. Thus, to
overcome the above drawbacks, we are using one of the
wireless communication technique i.e., GSM.
GSM
(Global Systems for
Mobile Communication) is
vastly u sed because
of its simplicity in
both transmitter and
receiver design, can
operate at 900
or 1800MHZ band,
faster , more
reliable and globally
network. Here the
system is capable
of controlling the motor b y receiving
control messages from an authorized
mobile number. Microcontroller is
the heart of
our system, which
controls the overall
operation of our system.
System always alert
for receiving SMS
from valid number
then that particular messages are
displayed on our
LCD(Liquid Crystal Display)
i.e., whether the
motor should rotate in right shift or left shift with a speed of so and
so. We are using
H-Bridge as an
driver for our
DC Motor because
our microcontroller doesn’t drive the motor directly.
This project uses regulated
5V, 500mA power supply. 7805 three terminal voltage regulator is used for
voltage regulation. Bridge type full wave rectifier is used to rectify the ac
out put of secondary o f 230/12V step down transformer
advantages:
1. Accurate speed control
2. System can be monitored
and controlled from any where
3. Mobile number can be
changed at any time
APPLICATIONS:
1. Process Industries
2. Bottle filling
industries
3. Conveyers
AUTOMATION
,
DC MOTOR
,
eee
,
EMBEDDED
,
GSM
,
microcontroller
,
PWM
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