16-08-2012, 09:57 AM
GSM Based Motor Monitoring and Speed Control
1GSM Based Motor.pdf (Size: 303.86 KB / Downloads: 400)
Abstract
In this paper, the design aspects of an embedded device which can control up to 8 devices by sending a specific SMS
message from a mobile phone are presented. This controller is extremely handy at places where we have to control the ON and OFF
switching of the devices but no wired connection to that place is available. To implement this, a GSM modem is connected to a
programmed microcontroller which would receive the SMS from a reference cell phone. The control signal part of the received SMS
is extracted and is changed to microcontroller-preferred format. A PC which is connected to the microcontroller using a serial
communication through RS232 can be used for monitoring and transmission of the control signals to the modem. The monitoring is
also done by interfacing a LCD to the microcontroller. AT commands were used for controlling the functionality of modem’s
(Global Systems for Mobile Communication) is vastly used 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 by
receiving control message from an authorized mobile number.
INTRODUCTION
This Project is a very good example of embedded
system as all its operations are controlled by intelligent
software inside the microcontroller. The aim of this
project is to control i.e. to ON/OFF and speed control of
different motors, the electrical or electronic appliances
connected to this system from anywhere in the world.
For this purpose user can use any type of Mobile. This
way it overcomes the limited range of infrared and radio
remote controls. Using the convenience of SMS, this
project lets you remotely control equipment by sending
plain text messages, such as "abcdn1", "abcdnaf3",
"abcdf57n142"– all of which can be pre-programmed
into the controller and easily remembered later. It can
control up to eight external devices Short Message
Service (SMS) is defined as a text-based service.
SYSTEM COMMUNICATION
ARCHITECTURE
As shown in Figure 1 the wireless transference of
industrial monitoring messages discussed in this paper is
built on the SMS of the GSM network. Data messages
produced at one end of the monitoring system are
encapsulated into a short message by the gateway and
sent to remote monitoring devices at another end. When
a short message is received, it can be restored to its
original industrial form by removing the SMS PDU
head. This is also conducted by the gateway of the
monitoring system.
A BRIEF INTRODUCTION OF GSM SIM 300
MODEM WITH SIMCOM TECHNOLOGY
GSM modem with RS 232 connector: The Global
System for Mobile Communications (GSM) is the most
popular standard for mobile phones in the world. It is the
European standard for digital cellular service that
includes enhanced features. It is based on TDMA
technology and is used on 900/1900 MHz. We are using
the sim 300, a GSM modem from simcom. This is a
powerful GSM/GPRS Terminal with compact and selfcontained
unit. This has standard connector interfaces
and has an integral SIM card reader.
CONCLUSION
In the paper low cost, secure, ubiquitously
accessible, auto-configurable, remotely controlled
solution for automation of different motors has been
introduced. The approach discussed in the paper has
achieved the target to control industrial appliances
remotely using the GSM -based system satisfying user
needs and requirements.
GSM technology capable solution has proved to be
controlled remotely, provide industrial security and has
achieved the target to control different industrial
appliances remotely using the SMS-based system
satisfying user needs and requirements GSM technology
capable solution has proved to be controlled remotely,
provide industrial security and is cost-effective as
compared to the previously existing systems.