There is provided an aerosol generating device configured for user inhalation of a generated aerosol, the device comprising: a heater element configured to heat an aerosol-forming substrate； a power source connected to the heater element； and a controller connected to the heater element and to the power source, wherein the controller is configured to control the power supplied to the heater element from the power source to maintain the temperature of the heater element at a target temperature, and is configured to monitor changes in the temperature of the heater element or changes in the power supplied to the heater element to detect a change in air flow past the heater element indicative of a user inhalation. The controller may determine when a user has inhaled and may use this for dynamic control of the device as well as provide user inhalation data for subsequent analysis.提供一種氣溶膠產生裝置，其配置成用於所產生氣溶膠之使用者吸入，該裝置包括：一加熱元件，其配置用以加熱一氣溶膠形成基質；一電源，其連接至該加熱元件；以及一控制器，其連接至該加熱元件及該電源，其中該控制器係配置用以控制從該電源對該加熱元件所供應之電力，以維持該加熱元件之溫度在一目標溫度(target temperature)下，以及係配置用以監視該加熱元件之溫度的變化或對該加熱元件所供應之電力的變化，以偵測表示使用者吸入之通過該加熱元件的氣流之變化。該控制器可以測定使用者何時吸入以及可以將此使用於該裝置之動態控制及提供用於後續分析之使用者吸入資料。
