Automatic calibration apparatus of fully automatic portable eddy current displacement sensor

Abstract

The invention discloses an automatic calibration apparatus of a fully automatic portable eddy current displacement sensor. A case body is provided with an installation bottom plate thereon. The installation bottom plate is fixedly provided thereon with a signal acquiring apparatus, a driver assembly, a 24V power supply and an encoder. An installation panel is provided with an electronic component,a guide rail, and an electric machine controller. The guide rail is fixed to the installation panel. A mobile support is installed in the guide rail to constitute a sliding pair. The mobile support is fixed to a moving platform of the driver assembly. The driver assembly drives the mobile support to conduct horizontal linear movement over the guide rail. According to the invention, the apparatusherein can fast calibrate the eddy current displacement sensor, can display the linearity of the eddy current displacement sensor, and feedbacks the slope K value and the intercept b value of the eddycurrent displacement sensor the first time. The apparatus herein has the characteristics of higher calibration efficiency, compact structure, small size and portability.

Description

technical field [0001] The invention discloses a portable automatic calibration device for an eddy current displacement sensor. Background technique [0002] The eddy current displacement sensor is a non-contact proximity displacement sensor. With the development of engineering testing technology, eddy current displacement sensors (eddy current displacement sensors) have been widely used in online monitoring and fault diagnosis of large rotating machinery. The feedback output voltage of the standard eddy current displacement sensor has a positive linear relationship with the measured distance. In engineering, the voltage value at the output terminal of the eddy current displacement sensor is generally measured to convert the measured distance. Before the eddy current displacement sensor is used, it must be calibrated to determine the coefficient of the sensor (slope K and intercept b). Therefore, it is particularly important to accurately calibrate the coefficient of the ...

AI Technical Summary

Problems solved by technology

[0005] 1. It is necessary to manually rotate the screw micrometer to adjust the measured distance, and the calibration efficiency is low;

[0006] 2. It does not have the function of data storage. Every time the measured distance is adjusted, it is necessary to manually record the adjusted distance and the output voltage of the sensor;

[0007] 3. It does not have the power supply function of the sensor, and it is necessary to prepare a power supply for the sensor during calibration; (the general power supply mode of the eddy current displacement sensor is -24V DC)

[0008] 4. The coefficient of the sensor cannot be calculated automatically. Generally, the calibration record needs to be manually input into Excel, and the linearity of the sensor is drawn by using the chart function of Excel, and the coefficient of the sensor is calculated.

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