Method and apparatus for determining an air quality level.

摘要

For accurately determining air quality level even when the temperature and humidity are varied , predefining formula used for obtaining output value of air quality level sensor according to conditions of temperature and humidity at clean state, calculating output value at clean state of the air quality level sensor on a temperature and humidity at air quality detection using the formula, taking as correction amount a difference between the calculated output value and an output value at clean state of the air quality level sensor in conditions of temperature and humidity providing absolute determination reference of air quality level, correcting threshold value predetermined in the conditions of temperature and humidity providing an absolute determination reference , by adding the correction amount to the threshold value, and determining an air quality level by comparing an output of the air quality sensor upon the air quality detection , with the corrected threshold value.