Apparatus for aerosol generating device having heating control circuit heating based on temperature of the heater or heaters

An aerosol generating device comprising an apparatus, the apparatus comprising:

• a heating circuit for heating a heating element, the heating element arranged to heat an aerosol generating material to thereby generate an aerosol;
• a temperature sensing arrangement for sensing a temperature of the device;
• and
• a controller for controlling a supply of energy to the heating circuit, wherein the controller is configured to:
• determine a characteristic that is indicative that energy is being supplied to the heating circuit over a given time period, and determine a change in temperature sensed by the temperature sensing arrangement over the given time period, and
• take a control action if, based on the determined characteristic and the increase in temperature sensed by the temperature sensing arrangement over the given period, the controller determines that one or more predetermined criteria that are indicative of a fault in the temperature sensing arrangement are satisfied;
• wherein the aerosol generating device is for generating an aerosol for being inhaled by a user.

A method for a controller of an apparatus for an aerosol generating device, the apparatus comprising:

• a heating circuit for heating a heating element, the heating element arranged to heat an aerosol generating material to thereby generate an aerosol;
• a temperature sensing arrangement for sensing a temperature of the device;
• and
• the controller, wherein the controller is for controlling a supply of energy to the heating circuit;
• wherein the method comprises:
• determining a characteristic that is indicative that energy is being supplied to the heating circuit during a given time period;
• determining a change in temperature sensed by the temperature sensing arrangement over the given time period;
• and
• taking a control action if, based on the characteristic and the increase in temperature sensed by the temperature sensing arrangement over the given period, the controller determines that one or more predetermined criteria that are indicative of a fault in the temperature sensing arrangement are satisfied.