Electric eddy transducer dynamic calibration device
An eddy current sensor and dynamic calibration technology, applied in the field of measurement and testing, can solve the problems of inaccurate correspondence between the eddy current sensor and the test platform, low calibration accuracy, etc., and achieve good neutrality, large contact area, and good stability.
Active Publication Date: 2013-11-27
ZHEJIANG UNIV
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Problems solved by technology
[0006] In order to overcome the shortcomings of inaccurate correspondence between the eddy current sensor and the test platform and low calibration accuracy existing in the existing eddy current sensor calibration device, the present invention provides an electric eddy current sensor that can be accurately aligned with the test platform and has high calibration accuracy. Calibration device for eddy current sensors
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[0031] Such as Figure 1-3 As shown, the dynamic calibration device for the eddy current sensor includes a vibrating table 1, a base, an induction disc 2 fixed on the moving coil of the vibrating table 1, a standard acceleration sensor 3 fixedly connected to the induction disc 2, and an installation with an eddy current sensor An adjustment mechanism, and a support rod 4 connecting the base and installing the adjustment mechanism. The bottom of the support rod 4 is fixed on the base by screws.
[0032] The installation adjustment mechanism includes a mounting plate 5 for installing the eddy current sensor and a position adjustment mechanism that drives the mounting plate 5 to move up and down, and the mounting plate 5 is provided with a plurality of mounting holes for the eddy current sensor 6 , the mounting holes are evenly distributed, and there are positioning parts for fixing the eddy current sensors 6 in the mounting holes. The positioning member includes a positioning ...
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The invention provides an electric eddy transducer dynamic calibration device which comprises a vibration platform, a sensing disc, a standard acceleration transducer, an installation and adjusting mechanism, a base and a supporting rod. The installation and adjusting mechanism comprises an installation plate for containing an electric eddy transducer and a position adjusting mechanism for driving the installation plate to move up and down, and the position adjusting mechanism comprises an upper support, a lower support, an adjusting screw rod, a ruler and a rotary knob. The adjusting screw rod and the ruler are connected with the upper support and the lower support, the rotary knob drives the adjusting screw rod to rotate so as to enable the lower support to move up and down, the adjusting screw rod is parallel to the ruler, the top end of the ruler is fixedly connected with the upper support, the ruler is in slidable connection with the lower support, the upper support is installed on the supporting rod in a rotatable mode, a locking mechanism which locks the position of the upper support is arranged on the upper support, the lower support is installed on the supporting rod in a slidable and rotatable mode, a fastening mechanism which fastens the position of the lower support is arranged on the lower support, and the installation plate is fixed on the lower support. The electric eddy transducer dynamic calibration device has the advantages of enabling the electric eddy transducer to precisely align at a testing platform, and being high in calibration precision.
Description
technical field [0001] The invention relates to the field of measurement and testing, in particular to a calibration device for an eddy current sensor. Background technique [0002] The eddy current sensor is a non-contact measuring probe, which is widely used in the vibration monitoring system of rotating machinery in petroleum, chemical, power generation and other industries. [0003] Chinese patent No. 201120564333.9 discloses a dynamic calibration device for eddy current sensors based on an accelerometer calibration system, including a fixed bracket, and an upper disk and a lower disk are fixed on the pillars of the fixed bracket; the upper disk is set for The clamping sleeve for clamping the eddy current sensor, the lower disk fixes the excitation table, the standard voltage accelerometer is set on the excitation table, the circular test platform is fixed on the upper end of the standard piezoelectric accelerometer, the circular test platform and the upper disk Corresp...
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IPC IPC(8): G01M7/02
Inventor 何闻金子迪贾叔仕周杰潘龙洪起徐祥
Owner ZHEJIANG UNIV
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