An ear thermometer with an ear canal sensing device and a measurement method thereof is disclosed. The ear thermometer mainly comprises two sensors. One is an approach sensor installed on a probe. The approach sensor used as the ear canal sensing device determines whether the probe is inserted into an ear canal. Also, the approach sensor is used as the basis to switch the measurement mode to an ear temperature mode or a second measurement mode, such as the forehead temperature mode, surface temperature mode, or room temperature mode. The other is an infrared sensor used to measure temperatures. After the approach sensor determines the measurement mode, the infrared sensor measures the temperature to obtain a signal. Then, the signal is processed through a control module to be shown on a display unit.本發明提供一種具有耳道感測裝置之耳溫槍,該耳溫槍內主要包括兩個感測器,其一為近接感測器安裝於探頭上,可判斷探頭是否為插入耳道狀態,作為耳道感測裝置,用以自動切換量測模式為耳溫量測模式或額溫量測模式;而另一感測器為紅外線感測器,用以測量溫度;當近接感測器判斷出量測模式後,以紅外線感測器進行溫度量測,並透過一控制模組處理訊號後於一顯示單元上顯示。本發明中利用近接感測器做為探頭是否插入耳道之判斷,以切換量測模式,可將兩種以上之溫度量測結合於一機中。10‧‧‧溫度計本體12‧‧‧探頭122‧‧‧近接感測器124‧‧‧紅外線感測器14‧‧‧顯示單元16‧‧‧量測按鍵182‧‧‧耳溫量測模式顯示符號184‧‧‧額溫量測模式顯示符號
