result - YUQI1122/ECE387_Midterm GitHub Wiki

Above all, when applying more amount of gas, the analog value will increase, but different gas need different amount to reach the same analog value.For instance, the vapor gas need larger amount to reach the same analog value than butane, the butane need larger amount of gas to reach the same analog value than the alcohol and the cigarette gas need similar amount of gas with butane to teach the same analog value. Therefore, the analog value can convert to concentration of the gas in ppm. I set the smoke detector will run the alarm when it reach larger than 30 ppm because it might be harmful value for human body. According to the result of smoke detector, when applying the same amount of gas, the butane runs the alarm fastest.