The invention discloses a large-
stroke and adjustable multi-channel
eddy current micro-displacement sensor parallel calibration device, which is characterized in that a probe support frame for mounting a sensor probe and a translation platform support frame for mounting a translation platform are fixedly arranged on a substrate, an inside
micrometer is fixed on a
micrometer support frame, a head of the inside
micrometer is in contact with a ball on the side surface of the translation platform, and the inside micrometer is fixed on the translation platform support frame; the inside micrometer, the ruler head and the tension spring in the
translation table are rotated to drive the
translation table to move, so that the measured object is driven to horizontally move, the distance between the measured object and the sensor probe is changed, the variable quantity is
read through the inside micrometer, and the output information of the sensor is synchronously recorded; and repeating the process to obtain multiple groups of sensor input and output signals, and obtaining a
calibration result of the
eddy current micro-displacement sensor through data fitting. According to the invention, the
offset distance and the measurement
stroke can be adjusted according to application requirements, and calibration of
eddy current micro-displacement sensors of various specifications can be met. And a plurality of sensor probe supporting frames can be arranged, so that parallel calibration of the multi-channel sensor is realized, and the working efficiency is improved.