Mask apparatus and method for controlling the same

A mask apparatus comprising:

• a mask body in which a fan module is provided;
• a face guard coupled to a rear surface of a rear body configured to be in close contact with a user's face and having a breathing space therein;
• a pressure sensor installed in the mask body to measure a pressure of the breathing space;
• and
• a controller configured to:
• compare a current pressure value measured by the pressure sensor to a preset atmospheric pressure estimation;
• update the atmospheric pressure estimation based on a difference between the current pressure value and the atmospheric pressure estimation;
• control a rotation speed of the fan module based on a difference between the updated atmospheric pressure estimation and the current pressure value;
• compare each of a preset atmospheric pressure maximum estimation and a preset atmospheric pressure minimum estimation to the current pressure value;
• update the atmospheric pressure estimation according to the comparison result from each of the preset atmospheric pressure maximum estimation and the preset atmospheric pressure minimum estimation to the current pressure value, and
• when the preset atmospheric pressure maximum estimation if less than the current pressure value the controller is configured to:
• update the preset atmospheric pressure maximum estimation to the current pressure value;
• and
• update the preset atmospheric pressure minimum estimation by reflecting a weight.