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Cement-based intelligent composite material strain sensor with temperature compensation function

A technology of strain sensor and cement-based material, applied in the field of strain sensor, can solve the problems of complex structure and layout process of the strain sensor system, limit the application and promotion of the strain sensor system, etc., so as to improve the performance stability and the accuracy of strain monitoring. , to avoid the reduction of the strain-resistivity linear correlation, to avoid the effect of resistivity fluctuations

Active Publication Date: 2012-06-20
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the composition structure and layout process of the strain sensing system are very complicated, and it can only be applied to the bending deformation monitoring of concrete beams, which limits the application and promotion of the cement-based intelligent composite strain sensing system.

Method used

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  • Cement-based intelligent composite material strain sensor with temperature compensation function
  • Cement-based intelligent composite material strain sensor with temperature compensation function
  • Cement-based intelligent composite material strain sensor with temperature compensation function

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Effect test

Embodiment 1

[0035] refer to Figure 1 to Figure 4 , a cement-based intelligent composite material strain sensor with temperature compensation function, including a strain monitoring module 1 and a temperature monitoring module 2, the strain monitoring module 1 and the temperature monitoring module 2 are made of carbon fiber cement basic characteristic intelligent composite material and set in Composed of four parallel electrodes 3 on the composite material, the strain monitoring module 1 and the temperature monitoring module 2 are connected and four parallel electrodes 3 are arranged on each of them, the electrodes 3 are high-purity copper mesh, and each electrode 3 Both the strain monitoring module 1 and the temperature monitoring module 2 are cuboid in shape, and the electrodes 3 are arranged vertically to the longest side of the cuboid and are left-right symmetrical.

[0036] Among them, the carbon fiber cement basic intelligent composite material is mainly composed of PAN-based choppe...

Embodiment 2

[0040] refer to Figure 1 to Figure 4 , a cement-based intelligent composite material strain sensor with temperature compensation function, including a strain monitoring module 1 and a temperature monitoring module 2, the strain monitoring module 1 and the temperature monitoring module 2 are made of carbon fiber cement basic characteristic intelligent composite material and set in Composed of four parallel electrodes 3 on the composite material, the strain monitoring module 1 and the temperature monitoring module 2 are connected and four parallel electrodes 3 are arranged on each of them, the electrodes 3 are high-purity copper mesh, and each electrode 3 Both the strain monitoring module 1 and the temperature monitoring module 2 are cuboid in shape, and the electrodes 3 are arranged vertically to the longest side of the cuboid and are left-right symmetrical.

[0041]Among them, the carbon fiber cement basic intelligent composite material is mainly composed of PAN-based chopped...

Embodiment 3

[0045] refer to Figure 1 to Figure 4 , a cement-based intelligent composite material strain sensor with temperature compensation function, including a strain monitoring module 1 and a temperature monitoring module 2, the strain monitoring module 1 and the temperature monitoring module 2 are made of carbon fiber cement basic characteristic intelligent composite material and set in Composed of four parallel electrodes 3 on the composite material, the strain monitoring module 1 and the temperature monitoring module 2 are connected and four parallel electrodes 3 are arranged on each of them, the electrodes 3 are high-purity copper mesh, and each electrode 3 Both the strain monitoring module 1 and the temperature monitoring module 2 are cuboid in shape, and the electrodes 3 are arranged vertically to the longest side of the cuboid and are left-right symmetrical.

[0046] Among them, the carbon fiber cement basic intelligent composite material is mainly composed of PAN-based choppe...

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Abstract

The invention discloses a cement-based intelligent composite material strain sensor with a temperature compensation function, which comprises a strain monitoring module and a temperature monitoring module, wherein the strain monitoring module and the temperature monitoring module are formed by carbon-fiber cement-based intrinsic intelligent composite material and four parallel electrodes arranged on the composite material; and the strain monitoring module and the temperature monitoring module are connected and are respectively provided with four parallel electrodes. The cement-based intelligent composite material strain sensor has the advantages of temperature compensation function, high sensitivity coefficient, high voltage-sensitive and good performance stability, is applicable to strain monitoring of concrete structures under various environment conditions, avoids the defect of poor technical effect of a thermoelectric couple for directly measuring the temperature and carrying out temperature function, has the characteristics of high temperature compensation accuracy and simple technology and simultaneously improves the temperature compensation effect and the strain monitoring accuracy of the sensor under various strain conditions.

Description

technical field [0001] The invention relates to a strain sensor, in particular to a cement-based intelligent composite material strain sensor with temperature compensation function, which is used for strain monitoring of concrete structures. Background technique [0002] At present, in civil engineering structures, resistance strain gauges are widely used to monitor the strain of concrete structures, which has the advantages of mature technology, stability and reliability, but the sensitivity coefficient of strain gauges is only 2-3, the durability is very poor, and the installation process is complicated and the cost is relatively high. High, unable to meet the technical needs of people for the long-term monitoring of the life of important civil engineering structures. The cement-based intelligent composite material strain sensor has the advantages of high sensitivity coefficient, excellent durability, low cost, and simple layout process and data acquisition. An important ...

Claims

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Application Information

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IPC IPC(8): G01B7/16
Inventor 魏剑陈晋贺格平
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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