Gas leak detection is a process of identifying potentially hazardous gas leaks by means of various sensors. These sensors usually employ an audible alarm to alert people when dangerous gas has been detected along with it gives SMS.

Objective 

The primary objective of the present project is to provide a novel means for safety and detecting any malfunctioning of a pressurized gas system to prevent accumulation of combustible gases so that damage or explosion due to such an accumulation of gases is prevented.

Operation

Gas detectors measure and indicate the concentration of certain gases in air via different technologies. Typically employed to prevent toxic exposure and fire, gas detectors are often battery operated devices used for safety purposes.

They are manufactured as portable or stationary units and work by signifying high levels of gases through a series of audible or visible indicators, such as alarms, lights or a combination of signals. While many of the older standard gas detector units were originally fabricated to detect one gas, modern multi-gas devices are capable of detecting several gases at once.

As detectors measure a specified gas concentration, the response of the sensor surpasses a certain pre-set level, an alarm will activate to warn the user.

Features 

High sensitivity to LPG, is-butane, propane

Small sensitivity to alcohol, smoke.

Fast response

Wide detection range

Stable performance and long life

Simple drive circuit

Application 

It is used in gas industries.

It  is   used  in  mining   of  coal  and   other  materials .

It  is   used  in  municipal   gas  distribution.

It  is   used  in  nuclear   power  stations.

Used   for   safety  from  gas   leakage  in  cooking   gas  fired  appliances   like  ovens , stoves etc.

It can also detect alcohol so it is used as a liquor tester.

Scope of the project 

In future, more detecting systems like any gas detection systems can be implemented. Additional features include more secure systems like a call/SMS will   be sent to a telephone number if a gas leakage and a   fire in an n/w area like LAN and internet used to worldwide

Conclusion 

This project is a microcontroller based project. A gas sensor is used to detect dangerous gas leaks in the kitchen or near any gas heaters. The sensor can also sense LPG and coal gas as well as an ideal sensor to use to detect the presence of a dangerous LPG leak in your car or in a service station, storage tank environment. This unit can be easily incorporated into the alarm unit, to sound an alarm or give a visual indication of LPG concentration. The sensor has excellent sensitivity combined with a quick response time.

source: http://www.bweducation.businessworld.in / BW Education / by BW Online Bureau / July 12th, 2018