Hi I'm kowsi. I would like to get details on ppt presentation on alerting system for gas leakage using gsm. Please send... this will be very helpful to my project. Please....

The objective of this project is to detect any leakage of
LPG/CNG based cars, small scale factories or in home
appliances also. It will detect the leakage and will close the
knob of the system to stop the supply of the gas. Stepper
motor is there that could be attached with the knob and will
close the supply by rotating it. For assistance and LCD of
16x2 is also there. An alarm is there also the stop the alert the
user as soon as leakage is found.
Gas sensors are employed in a wide range of applications in
the fields of safety, health, instrumentation etc... Common
examples are domestic/commercial alarms for explosive or
toxic gases, or in automotive application as gas leakage
detectors for LPG powered cars and exhausts detectors inside
any fuel powered truck/car. Such sensors, nowadays, are
found also in applications involving air quality control
systems and pollution monitoring. Today’s sensors, while
featuring a high sensitivity to a wide gases variety, are very
compact in size and have significantly reduced their power
consumption to better adapt to portable solutions. Building a
system with a gas sensor is not as easy as it could appear.
Despite the sensor could be treated, basically, as a variable
resistor (which value depends on gas concentration in air) the
practical implementation in a project should be done
considering some design rules, especially if the final circuit is
a device to be used in a field where reliability is strongly