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A strain gauge calibration device and method

A strain gauge and strain rod technology, applied in the field of strain gauge calibration equipment, can solve the problems of reducing calibration efficiency, increasing calibration errors, wasting human resources, etc., and achieve the effect of improving calibration work efficiency and avoiding errors

Active Publication Date: 2017-03-22
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The two existing calibration methods use manual suspension of heavy objects (such as weights) to load the load, which wastes a lot of human resources, reduces the efficiency of calibration, and increases the calibration error due to manual operation.

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  • A strain gauge calibration device and method
  • A strain gauge calibration device and method
  • A strain gauge calibration device and method

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Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] An embodiment of the present invention provides a strain gauge calibration device, such as figure 1 with figure 2 as shown, figure 1 Schematic diagram of the structure of the strain gauge calibration equipment, figure 2 It is a schematic structural diagram of a bridge formed by a strain gauge to be calibrated and a resistor. The strain gauge calibration device includes: a controller 11 , a servo driver 12 , a servo motor 13 , a mechanical transmissi...

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Abstract

The invention provides strain gauge calibration equipment and method, and relates to the field of computer measurement and control. Manual operation is not needed in the strain gauge calibration process so that strain gauge calibration efficiency is enhanced and additional errors caused by manual operation can be avoided. The strain gauge calibration equipment comprises a controller, a servo driver, a servo motor, a mechanical transmission assembly and a strain rod. The controller is connected with the servo motor via the servo driver. The servo motor is connected with one end of the mechanical transmission assembly. The other end of the mechanical transmission assembly is connected with one end of the strain rod. The other end of the strain rod is fixedly connected. The strain rod is provided with a strain gauge to be calibrated. An electrical bridge is formed by the strain gauge to be calibrated and a resistor. The output end of the electrical bridge is connected with the controller, and the other end of the electrical bridge is connected with a power supply. The embodiment of the invention is applied to strain gauge calibration.

Description

technical field [0001] The invention relates to the field of computer measurement and control, in particular to a strain gauge calibration device and method. Background technique [0002] Strain gauge is a widely used measuring instrument with various types, which can be used not only in safety issues of construction engineering, but also in rocket engine testing. Therefore, the calibration of the strain gauge is of great significance. [0003] At present, there are two main methods for strain gauge calibration: one method is to use a strain beam, paste the strain gauge on the strain beam, apply a load to the beam to generate a known strain value, and use a high-precision static strain gauge to measure the strain gauge’s strain. variable, and then calculate the sensitivity coefficient according to the corresponding data processing specifications (such as regression analysis or least square method); another method is to use a precision bridge (or other high-precision resista...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/16
Inventor 吕翔陈剑李江刘佩进何国强
Owner NORTHWESTERN POLYTECHNICAL UNIV
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