Closed type displacement sensor calibrating device

Abstract

The invention discloses a closed type displacement sensor calibrating device, which comprises a power electric machine connected with a movable shaft, the movable shaft is supported by an angular contact bearing pack, the movable shaft is equipped with a analyte movable ring, both the analyte movable ring and the pick-up probe are sealed in the sealing cavity provided with a medium inlet and a medium outlet, the end cover of the sealing cavity is connected with a differential head and a probe protective sleeve, the sensor bracket moves in a straight line by arranging one bearing between the differential head measuring rod and the sensor bracket, the pick-up probe and the sensor bracket are relatively fixed, the probe protective sleeve is connected with the pick-up probe, and the tail of the pick-up probe is connected with a sensor post treatment and result display part. The closed type displacement sensor calibrating device provided by the invention has the characteristics of calibrating optical fibre displacement sensors and other displacement sensors in liquid and gas fluid media under static and rotational conditions, so that the calibration environment of the sensor is approximate to the operating ambient of the sensor and then the resolution of the sensor is obtained under the condition of most approximate to the operating ambient.

Description

technical field [0001] The invention relates to the technical field of sensor calibration, in particular to a closed displacement sensor calibration device. Background technique [0002] Optical fiber displacement sensor is a new type of displacement measurement sensor that is in the development period. It measures displacement based on the principle of light reflection. It has the advantages of high measurement accuracy, small probe diameter, and small dependence on the material properties of the measured object. Traditional capacitive and eddy current displacement sensors have wider application prospects. Currently known fiber optic displacement sensors are mostly calibrated using a commercial axial displacement static calibrator or displacement static calibrator. Such devices are generally small in size, light in weight, and easy to carry, and can be used in laboratories or Can be used on site. However, due to the influence of the medium on the reflection of light, whic...

AI Technical Summary

Problems solved by technology

However, due to the influence of the medium on the reflection of light, which will affect the resolution of the sensor, the existing commercialized displacement calibration test bench can only be calibrated in the air medium, and there are certain difficulties in the calibration in water and other liquids. , so it is necessary to design a closed experimental device that can calibrate the optical fiber displacement sensor for different media application conditions

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