CO2 detection system in mixed gas using MQ-135 sensor

The increase in CO2 gas occurred very significantly due to the use of fossil fuels, industry, forest fires, volcanic eruptions and natural resulting air pollution. dangers CO? for humans can cause headaches, sweating, blurred vision, tremors, loss consciousness after exposure five ten minutes. is a poisonous which physically colorless odorless. This characteristic causes many be unaware existence this gas, so that it exposed endangers health. Therefore we need detection system. difficulty occurs when mixed with other gases have similar material properties. In research, system designed detect mixes using MQ-135 sensor. has been built then compared standard tool, namely xm-7000 dragger. test data analyzed linear regression showed results accordance 2the value R = 0.9896 conversion equation y 0.0389x-76.086. With these provide new opportunities testing on mixtures are easier cheaper.