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Calibrating device for eddy sensor

An eddy current sensor and calibration device technology is applied in the field of detection technology and sensors to achieve the effects of improving test accuracy, improving adaptability and accuracy, and reducing influence

Inactive Publication Date: 2012-07-04
XI AN JIAOTONG UNIV
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  • Calibrating device for eddy sensor
  • Calibrating device for eddy sensor
  • Calibrating device for eddy sensor

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] refer to figure 1 , a kind of eddy current sensor calibration device, comprises micrometer 1, and micrometer 1 is fixed on platform base 3 through micrometer support 5, and micrometer measuring rod moves freely according to specific reference value, and the moving amount utilizes digital display reading head to read, through controllable The fine-tuning device can accurately move the probe distance, and fix the distance between the sensor under test and the test flat head 2 to achieve the purpose of calibration. Refer to Figure 3a and Figure 3b , the test flat head 2 is connected with the micrometer 1 through screws, the sensor bracket 4 is fixed on the bench base 3, the sensor positioning block 6 and the positioning screw 7 are fixed on the sensor bracket 4, and the axis of the sensor bracket 4 and the micrometer bracket 5 are on the same line.

[0021] r...

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Abstract

The invention discloses a calibrating device for an eddy sensor. The calibrating device comprises a micrometer, wherein the micrometer is fixed on a rack base through a micrometer bracket; a measuring flat-end is connected with the micrometer; a sensor bracket is fixed on the rack base; a sensor positioning block is fixed on the sensor bracket; the sensor bracket and the axis of the micrometer bracket are on the same straight line; a V-shaped groove structure is arranged on the sensor bracket; the eddy sensor is clamped in the V-shaped groove structure and locked through the sensor positioning block and a positioning screw; the rack base is made from high-carbon steel and marble materials; the reaction of the eddy sensor to displacement variation can be calibrated by fine adjustment to precision of the micrometer; calibration is realized by data comparison; and by changing the distance between the eddy sensor end surface and the measuring flat-end, the linearity and the sensitivity of the eddy sensor can be measured. Therefore, the calibrating device has the characteristics of high resolution, easy operation and adjustable linear range, and has the advantages of stable and reliable detection result and simple operation.

Description

technical field [0001] The invention belongs to the field of detection technology and sensor technology, and in particular relates to an eddy current sensor calibration device. Background technique [0002] With the continuous application of eddy current sensors in industry, especially in the use of displacement measurement, it is necessary to detect and calibrate the displacement accuracy of eddy current sensors. In some demanding industrial occasions and inspection tests, such as the condition monitoring of large steam turbine units, the dynamic rotation test of shaft components, and the state detection of power machinery, etc. These devices have high requirements on the working status, not only pay attention to the frequency information of the vibration signal, but also pay special attention to the amplitude information of the vibration signal. If the amplitude information is quantified and measured, the eddy current sensor must be calibrated and calibrated. Therefore, ...

Claims

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Application Information

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IPC IPC(8): G01B7/02
Inventor 梁霖刘飞徐光华高慧中
Owner XI AN JIAOTONG UNIV
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