1. Monitor And Control Agricultural And Industrial
Applications Using Sms
SMS Control Systems (Pty) Ltd specializes in the application of the locally
developed and operationally stable Cellsecure and global remote GSM
technologies which make it possible to monitor and control agricultural and
industrial applications using SMS (Short Message Service).
What is GSM ?
GSM, which stands for Global System for Mobile Communications, is a digital cellular
radio network operating in over 200 countries world-wide. It provides almost complete
coverage in western Europe, and growing coverage in the Americas, Asia and elsewhere.
Of special interest is the capability of the GSM network to be used for data computing.
Most people think of voice calls when they think of cellular phones. But because GSM is
digital, you can connect your GSM-enabled phone to your laptop computer and send or
receive e-mail, faxes, browse the Internet, securely access your company's LAN/intranet,
and use other digital data features including Short Messaging Service.
The unique roaming features of GSM allow cellular subscribers to use their services in
any GSM service area in the world in which their provider has a roaming agreement. That
means the phone you use in France could work in Germany, Australia, Finland and even
China, depending on your provider's roaming agreements.
GSM-enabled phones have a "smart card" inside called the Subscriber Identity Module
(SIM). The SIM card is personalized to you and you alone. It identifies your account to
the network and provides authentication, which allows appropriate billing.
Aim of project
Imagine being able to control all the electrical appliances of your home from virtually
any place your are in the world! For example, say one cold winter day, you are stuck in
traffic on the motorway after a long day at work. By pressing a few keystrokes on your
mobile phone, you activate a macro which turns on the heating, prepares your Jacuzzi,
switches on your electrical fireplace and lava-lamps at your premises.
In today's times the GSM mobile terminal has become one of the items that is constantly
with us. Just like our wallet/purse, keys or watch, the GSM mobile terminal provides us
with a communication channel that enables us to communicate with the world. The want
for a person to be reachable or to call anyone at any time is very appealing.
Using the cybernetic concept of action space, we in fact extend the action space of the
human with the mobile terminal, enabling the subscriber to talk to another subscriber and
thus exchange information, issue or receive commands.

2. In this project, we will explore ways of extending this notion of Home Automation by
applying mobility to it using various technologies that are available in our information
age. These technologies include mobile communication devices and the Internet which
are becoming part of our everyday lives.
Working of the project:
A potential user only need to use his cell phone (any type or brand, only
contract phones) in order to monitor and control agricultural and industrial
applications.
The systems from SMS Control Systems which incorporate the cellsecure GSM
technology operate by sending and receiving SMS. This means that it is
possible to send a SMS to start a electric motor. As soon as the motor is started
the system from SMS Control Systems will send a SMS back to an operator
with a message such as: "Motor #1 running at main pump house ".
The system from SMS Control Systems may also be used to monitor the alarm
status of any process variable such as: temperature, Voltage etc. If a critical
temperature is exceeded a SMS message such as: "Temperature > 55 deg at
Motor Shaft" will be send to an operator of the system.
Hardware Spec:
DsPIC 30F4013 Microcontroller
GSM Modem (SIM 300S Module)
Relay Circuits
Signal processing circuits
Temperature Sensor
Software Spec
PIC C 30C Compiler
MPLAB IDE

3. The block Diagram of the project is given below
Block Diagram:
GSM MODEM
SIM300s
Module
dsPIC
Power Supply
Unit Microcontroller
dsPIC30f4013
Relay
Driver
Signal Conditioning
Circuit
Motor Relay
Power
Supply
Voltage
Sensor Motor
Temperature Sensor