Parameter correction method and device of gas sensor and air purification equipment

The invention discloses a parameter correction method and device of a gas sensor and air purification equipment, the gas sensor is arranged in an air duct of the air purification equipment, and the method comprises the steps that the gas sensor is controlled to be powered on and preheated until the preheating duration reaches the preheating set duration; controlling the air purification equipment to purify air until the purification duration reaches the set purification duration; acquiring the change rate of the output value of the gas sensor; determining that the change rate is smaller than a preset threshold value, controlling the air purification equipment to stop air purification, and correcting the output reference value of the gas sensor according to the output value of the gas sensor at the current moment. Therefore, the influence of gas pollutants emitted by the material of the air duct of the air purification equipment on the gas concentration detected by the gas sensor can be reduced to a great exte