关于传感器的定义,在航天部“部标”QJ30—81标准中已有明确规定:“为测量的目的,将感受的物理量(一般为非电量)按照相应的关系,转换成另一种物理量(一般为电量)输出的装置”。这一标准还对各种不同用途的传感器分别予以定义。大多数传感器在进行不同物理量间的信息转换时,总是要有能最转换过程,因此也称为“换能器”。但是从广义而言,传感器是以信息转换更为确切。 As for the definition of the sensor, it has been stipulated clearly in the standards of the Ministry of Aeronautics and Astronautics “QJ30-81:” For the purpose of measurement, the physical quantity to be sensed (generally non-electricity) is converted according to the corresponding relationship into another Physical (usually electricity) output device “. This standard also defines a variety of sensors for different purposes. Most transducers always have the most conversions in the conversion of information between different physical quantities, hence the name ”transducer." But in the broadest sense, the sensor is more accurate with information conversion.