Gas Leakage Alarm

MADRAS INSTITUTE OF TECHNOLOGY ANNA UNIVERSITY CHROMEPET, CHENNAI-44 battlefield Name: Electronic Circuits-I science lab Subject Code : EC9204 Department : Electronics & Communication technology Batch ,Year : S-Batch , 3 / 8. A project work dress by K.Karthik(2010504552) and B.Ajan Ramachandar (2010504502) on GAS LEAKAGE ALARM for the electronic circumferences lab-I during the Period July 2011 November 2011. shove offolene Leakage Alarm OBJECTIVE: LPG brag is supplied in pressurized poise cylinders. As this flatulency is heavier than air, when it leaks from a cylinder,it flows along floor and tends to shine in low spots much(prenominal) as a basement.This can cause fire or suffocation if non dealt with.Here is a circuit that breaks the news leak of LPG gas and alerts the user done audio-visual indications. OPERATING MECHANISM: Fig. 1 shows the circuit of the gas leaka ge alarm. The circuit operates off a 9V PP3 battery. Zener semiconductor diode ZD1 is utilize to deepen 9V into 5V DC to drive the gas sensing element faculty. The SEN-1327 gas sensing element module from Rhydo LABZ is used in this circuit. Its output goes senior high when the gas level reaches or exceeds certain point. A preset in the module is used to set the threshold.

Interfacing with the sensor module is done through a 4-pin SIP header. Pin details of the gas sensor module are shown in Fig. 2. An MQ-6 gas sensor is used in the gas sensor module. As per its datasheet, it has high sensitivity to propane, butane, isobu tene, LPG and natural gas. The sensor can a! lso be used to detect combustible gases, especially methane. This circuit has been time-tested with LPG gas and was plant to work satisfactorily. Whenever there is LPG concentration of curtilage ppm (parts per million) in the area, the divulge pin of the sensor module goes high. This contract drives timer IC 555, which is wired as an astable multivibrator. The multivibrator basically flora as a tone generator. Output pin 3 of IC 555 is...If you ask to get a full essay, rig it on our website: BestEssayCheap.com

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