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传感器是一种以测量为目的,以一定精度把被测量转换为与之有确定关系的.便于处理的另一种物理量的测量装置、器件或元件。因此,传感器直接与被测对象发生联系,采集并获取被测对象的信息。由于一般的被测对象是非电信号,如位移、速度、温度、压力、流量等、所以传感器还必须将上述信号转换成便于传输和处理的电信号。
A sensor is a measurement device, device or element that measures a certain amount of precision and converts it to a determinate relationship with it. Therefore, the sensor directly connected with the measured object to collect and obtain the information of the measured object. Since the general object under test is a non-electrical signal, such as displacement, velocity, temperature, pressure, flow, etc., the sensor must also convert the above signal into an electrical signal that facilitates transmission and processing.