In this project we are going to provide an advanced solution for detect PPM level of carbon monoxide gas in vehicle. As per use of heater use increasing day by day in the vehicles. It is very important to control level of carbon monoxide but when a high level CO occurs then it may produce heavy disaster. We are using MQ-7 gas sensor which provide maximum resistance at leakage time. When CO gas sensor detected it produce a buzzer sound also it switch on the exhaust fan and Switch off Heater system. We can set this at different PPM level of CO gas.
The onboard CO Sensor (MQ-7) provides the CO contents in the air. If this found above set PPM value then it will inform the Host controller by pulling the Digital Output Pin to High and onboard status LED glow. The sensor module is mainly intended to provide a means of comparing CO sources and being able to set an alarm limit when the source becomes excessive.
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