Deflection sensor for monitoring bridge deformation and deflection measuring method

A deformation monitoring and sensor technology, used in measuring devices, deflection sensors for bridge deformation monitoring and deflection measurement, can solve problems such as being unable to meet real-time, synchronous protection and accuracy at the same time, and reduce laying and maintenance. Volume, high precision effect

Inactive Publication Date: 2012-07-04
上海砺晟光电技术有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0012] The present invention aims at the deficiencies of existing technologies that cannot simultaneously meet the requirements of real-time, synchronization, protection and accuracy, etc., and proposes a deflection sensor and a deflection measurement method suitable for bridge deformation monitoring

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  • Deflection sensor for monitoring bridge deformation and deflection measuring method
  • Deflection sensor for monitoring bridge deformation and deflection measuring method
  • Deflection sensor for monitoring bridge deformation and deflection measuring method

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specific Embodiment

[0044] Specific embodiment: when the measurement wavelength λ is 5 mm, the width of the planar coil of the measurement board 1 is also half of the measurement wavelength λ, namely 2.5 mm, and the length can be 8 mm. Each code track of the measurement board 1 adopts two planar coils, and the distance between adjacent planar coils of the same code track is 1 / 2 an integer multiple of the measurement wavelength λ, which is set to 2.5 mm in this embodiment. The distance between planar coils of different code tracks is greater than half of the measurement wavelength λ, which is set to 4 mm in this embodiment. The difference between the starting positions of the planar coils of different code tracks is 1 / 4 of the measurement wavelength λ, that is, the difference is 1.25mm. The width of the metal conductor 4 on the reflection grid 2 is half of the measurement wavelength λ, that is, 2.5mm, and the length is set to 12mm.

[0045] Assuming that the vertical deflection measurement range ...

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Abstract

The invention discloses a deflection sensor for monitoring bridge deformation and a deflection measuring method. The deflection sensor consists of a measuring plate, a reflecting grating and a supporting arm, wherein the measuring plate is fixed on measuring points on the bridge; the reflecting grate is fixed on the supporting arm; and the two ends of the supporting arm are fixed on two neighboring measuring points of the measuring plate. According the deflection sensor, the deflection measuring method is that, the deflection sensors are arranged on two horizontal measuring lines, the sensors on the same horizontal measuring line are in end-to-end connection, and a measuring point interval is reserved between the sensors on the two horizontal measuring lines on the horizontal position. The deflection sensor for monitoring the bridge deformation and the deflection measuring method have the advantages of high precision, high speed, non contact, low power consumption, small size, and wireless design, and can be used for measuring the vertical and the horizontal deflection of the deformation of all sorts of roads and bridges.

Description

technical field [0001] The invention relates to a measuring device in the technical field of building construction, in particular to a deflection sensor and a deflection measuring method for bridge deformation monitoring. Background technique [0002] Bridge is a kind of project with high cost and huge structure. Once it collapses, it will affect the traffic, economy and social life in a large area for a long time. Bridges are exposed to the sun and rain, and bear fatigue loads, and there will inevitably be cumulative damage that develops slowly. When the cumulative damage develops to a certain extent, safety accidents will occur. In particular, with the advancement of science and technology and the needs of transportation, many long-span bridges have emerged, especially suspension bridges are favored by people for their large spans, beautiful shapes, and material savings, and have become the first choice for long-span bridges. However, as the span increases, the safety fac...

Claims

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Application Information

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IPC IPC(8): G01M5/00G01B7/16
Inventor 赵辉刘伟文陶卫雷华明吕春峰王成龙
Owner 上海砺晟光电技术有限公司
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