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Long-gauge-distance strain sensor high-precision calibration frame

A strain sensor, high-precision technology, applied in the field of sensing, can solve the problems of no dial gauge fixing frame, difficulty in changing the distance of the fixture, and short calibration length

Active Publication Date: 2013-12-04
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the calibratable length is short, mainly for the calibration of "point" sensors; the pads are made of steel sheets, the drag plate moves too fast and the control is inconvenient, the fixtures are prone to deformation, and the distance between the fixtures is difficult to change. Sub-table fixing frame and other issues

Method used

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  • Long-gauge-distance strain sensor high-precision calibration frame
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  • Long-gauge-distance strain sensor high-precision calibration frame

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Embodiment Construction

[0020] Such as figure 1 , figure 2 as well as image 3 As shown, the long gauge strain sensor calibration frame of the present invention is composed of a fixed frame, a moving mechanism, a clamping and measuring device and the like. Strain is directly applied to the long-gauge sensor to be calibrated by the precise movement of the shifting mechanism, and there will be no relative slip and strain loss that occurs in indirect methods (such as carrier methods, etc.), and the strain can be accurately measured directly through the dial gauge. , so the calibration accuracy is high.

[0021] The fixed frame is the main part of the calibration frame, and the moving mechanism, clamping and measuring devices are installed on the fixed frame. The fixed frame is composed of a front end plate 1, a rear end plate 2, three fixing rods 9 and fixing nuts; among them, the three fixing rods 9 are distributed in an isosceles triangle in space and are parallel to each other, and are connected ...

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Abstract

The invention discloses a long-gauge-distance strain sensor high-precision calibration frame which is composed of a front end plate, a back end plate and a middle fixing frame, wherein the front end plate and the back end plate are connected through the middle fixing frame. A fixing frame is arranged between the front end plate and the back end plate in a sliding mode. The fixing frame comprises a first dragging plate and a second dragging plate. A fixing rod is sleeved with the first dragging plate and the second dragging plate, and the first dragging plate is fixedly connected with the second dragging plate. A differential screw rod is connected with the second dragging plate. The other end of the differential screw rod is connected with a circular handle which is connected to the back end plate. Dial gauges and two clamps are arranged on the front end plate and the first dragging plate. 3 to 20 cushion block grooves are formed in the opposite surfaces of the two clamps. A sensor clamping cushion block is arranged in each cushion block groove, and each cushion block is a soft metal block. The long-gauge-distance strain sensor high-precision calibration frame has the advantages of being reasonable in structure arrangement, large in stiffness, adjustable in differential screw rod screw-in speed, high in control precision, firm and durable.

Description

technical field [0001] The patent of the present invention relates to a long-gauge-length strain sensor calibration frame. The calibration frame has a reasonable structural design, high rigidity, and high propulsion precision control. It is especially suitable for long-gauge length and relatively fragile strain sensor calibration, and can perform high-precision on multiple sensors at the same time. The calibration belongs to the field of sensor technology. Background technique [0002] Optical fiber sensor is a new type of sensor that has developed rapidly in recent years. It has many advantages that traditional sensors cannot match: such as anti-electromagnetic interference, good electrical insulation, high sensitivity, light weight, corrosion resistance, good durability, and easy installation. etc., so it has broad application prospects. In particular, the fiber optic grating sensor has good dynamic measurement performance in addition to the above advantages. After being ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16
Inventor 杨才千邬植树吴智深夏叶飞
Owner SOUTHEAST UNIV
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