换能器(Transducers)即把一种能量转换为另一种能量的装置。生理科学研究中主要采用把其他的能量转变为电讯号的换能器,如使用较多的压力换能器,把各种压力变化(血压、胸内压等),转变为电讯号,然后将这电讯号,或经前置放大器,显示在示波器或记录仪上。目前,采用电动平衡记录仪的单位越来越多,因此就需要不同类型 Transducers are devices that convert one type of energy into another. In physiological science research, transducers that convert other energy into electrical signals are mainly used. If more pressure transducers are used, various pressure changes (blood pressure, intrathoracic pressure, etc.) are converted into electrical signals, and then This electrical signal, or via a preamplifier, is displayed on an oscilloscope or recorder. At present, there are more and more units using electric balance recorders, so different types are needed.