Method of controlling aerosol generating device with a plurality of geomagnetic sensors and aerosol generating device controlled thereby

A method of controlling an aerosol generating device with a plurality of geomagnetic sensors, the method comprising:

• detecting detachment of at least one detachable element that is attachable to and detachable from an inner space or an outer space of the aerosol generating device;
• detecting, with the plurality of geomagnetic sensors, a change in strength of an internal magnetic field of the aerosol generating device due to the detachment;
• and
• identifying the at least one detachable element based on a detection result from at least one of the plurality of geomagnetic sensors,
• wherein the plurality of geomagnetic sensors comprise a first geomagnetic sensor and a second geomagnetic sensor, and
• wherein the identifying of the detachable element comprises:
• determining whether the at least one detachable element has passed through a predetermined area of the inner space or the outer space, based on a detection result from the first geomagnetic sensor, and
• determining whether the at least one detachable element is completely attached to the inner space or the outer space, based on a detection result from the second geomagnetic sensor.