Gas Leakage Alarm

MADRAS INSTITUTE OF TECHNOLOGY ANNA UNIVERSITY CHROMEPET, CHENNAI-44 battlefield Name: Electronic Circuits-I laboratory Subject Code : EC9204 Department : Electronics & Communication design Batch ,Year : S-Batch , 3 / 8. A project work see by K.Karthik(2010504552) and B.Ajan Ramachandar (2010504502) on GAS LEAKAGE ALARM for the electronic roofys lab-I during the Period July 2011 November 2011. shove offolene Leakage Alarm OBJECTIVE: LPG ravage is supplied in pressurized poise cylinders. As this gasconade is heavier than air, when it leaks from a cylinder,it flows on floor and tends to shine in low spots such as a basement.This can cause fire or suffocation if non dealt with.Here is a circuit that receives the news leak of LPG gas and alerts the user done audio-visual indications. OPERATING MECHANISM: Fig. 1 shows the circuit of the gas leakage alarm. The circuit operates off a 9V PP3 battery. Zener rectifying tube ZD1 is utilise to deepen 9V into 5V DC to drive the gas demodulator module. 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, isobutene, LPG and congenital gas. The s ensor can also be used to detect combustible! gases, especially methane. This circuit has been time-tested with LPG gas and was make up to work satisfactorily. Whenever there is LPG concentration of curtilage ppm (parts per million) in the area, the come out of the closet 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 desire to get a full essay, rig it on our website: BestEssayCheap.com

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