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Automatic Electronic Control of the Level of LPG in air in a Confined Space

Ismail, Arbaeyah (2004) Automatic Electronic Control of the Level of LPG in air in a Confined Space. Universiti Teknologi Petronas. (Unpublished)

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Abstract

Documentation of the automatic electronic control of the level of LPG in air in a confined space can be viewed in this project. Humans are increasingly becoming dependent on petrochemical products for their daily life. Ignition of these combustible products can have catastrophic effect especially in a confined space where there exist limited amount of air. Therefore, a sensor is needed to monitor the level of gases in homes and also in industry to avoid all possibilities of the accidents. The aim of this project is to design an automatic electronic control of the level of flammable gases in a closed chamber as one of the solution in curbing the concentration of these gasses from increasing in air and reaching its lower explosive limit (LEL). Literature review was done in order to select the suitable sensor and the appropriate circuit. Some lab work was also conducted to verifY all the findings and simulate the circuit designed. After simulation, the circuit was designed and tested on breadboard. Graphs of voltage changes versus time and when exposed to gas was plotted. From detailed analysis using the spreadsheet provided, it was demonstrated that the sensor is very sensitive and its response time is less than a minutes. The circuit is demonstrated to be working once the sensor is to be working once the sensor is exposed to the gas by actuating a venting fan. A prototype sensor circuit is finally designed and tested.

Item Type: Final Year Project
Academic Subject : Academic Department - Electrical And Electronics - Pervasisve Systems - Digital Electronics - Test and Reliablity
Subject: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Engineering > Electrical and Electronic
Depositing User: Users 2053 not found.
Date Deposited: 09 Oct 2013 11:08
Last Modified: 25 Jan 2017 09:47
URI: http://utpedia.utp.edu.my/id/eprint/8372

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