隨著科技的進步與發展，人們對於「製造」的需求早已不僅止於自動化生產。然而，無論是設備異常偵測、零組件使用壽命預估甚至是工具機聯網製造，感測器都扮演著不可或缺的腳色，例如：想要知道工具機加工過程中為何有異常振動，就必須仰賴加速規量測振動訊號來進行分析；想要知道溫度變化對於機台熱變形的影響，就必須透過位移感測器與溫度感測器來所量測之數據來建立熱變位誤差模型。本文將介紹兩種常用的感測器－振動、溫度感測器，並敘述其應用於工具機狀態監測之使用情境。

Paving by the development and improvement of technologies, “manufacturing” in these days requires more than automation. No matter equipment abnormal detection, component life cycle prediction, or IIoT in machine tool manufacturing, sensors are crucial and play an indispensable role. For understanding why and how abnormal vibrations are excited during the machine tools’ operation, accelerator is necessary to capture vibration signals for analysis; for realizing how temperature variation influence the thermal deformation of machining tools, displacement and temperature sensors are required for establishing the thermal displacement prediction model to compensate the displacement error. This paper will introduce two generally used sensors mentioned in the above applications-accelerators and temperature sensors, and the circumstance of how they play their roles in machine tool state monitoring.