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Optical fiber reinforcement meter

A steel bar meter and fiber optic technology, applied in the field of measurement, can solve the problems of low sensitivity, high insulation requirements, and poor durability of differential resistance steel bar meters, and achieve strong anti-interference ability, high sensitivity, and stable performance.

Inactive Publication Date: 2014-01-15
STATE GRID ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resistance strain gauge type has poor durability and is easy to creep, and the differential resistance type steel bar meter has low sensitivity. At the same time, the differential resistance, vibrating wire type and other electric steel bar meters are seriously disturbed by electromagnetic interference and have high insulation requirements, so they are not suitable for strong electromagnetic harsh environments. use

Method used

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  • Optical fiber reinforcement meter

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Embodiment Construction

[0016] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0017] like figure 1 As shown, an embodiment of the present invention has a fiber grating sensitive component 1 and a sensing sleeve 2 . The fiber grating sensitive part 1 is fixed on the sensing sleeve 2 through the tightening part 3 or welding. The sensing sleeve 2 is made of high-strength material, and different shapes and sizes can be designed according to different measurement requirements. The two ends of the sensing sleeve 2 are connected with steel connecting rods 10, and the connecting rods 10 and the sensing sleeve 2 are connected by thread or welding.

[0018] The fiber grating sensitive part 1 comprises an elastomer base 4 , a fiber grating 5 and a protective housing 6 . The optical fibers at both ends of the fiber grating 5 are fixed in the elastomer base 4 by bonding or welding, and are packaged in the protective casing 6 for protec...

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Abstract

The invention discloses an optical fiber reinforcement meter, and belongs to the technical field of measurement. The optical fiber reinforcement meter comprises an optical fiber grate sensitive component, a sensing sleeve and reinforcement connecting rods, wherein the optical fiber grate sensitive component is fixed in the sensing sleeve; the reinforcement connecting rods are connected to the two ends of the sensing sleeve; the optical fiber grate sensitive component comprises an optical fiber grate, an elastomer base and a protection housing; the optical fiber grate is tensioned and fixed in the elastomer base; the elastomer base is packed in the protection housing; signal transmission fibers are arranged at two ends of the optical fiber grate, extend out of the two ends of the optical fiber grate sensitive component, and penetrate from the sensing sleeve. The optical fiber reinforcement meter is good in linearity, high in sensitivity, high in precision, and strong in electromagnetic interference resistance, has a relatively good protection structure, and is suitable for being used in severe environments.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to an optical fiber steel bar meter used in fields such as water conservancy and hydropower engineering, traffic engineering, municipal administration and the like. Background technique [0002] As we all know, the steel bar gauge is a measuring instrument used to measure the stress of the concrete reinforcement of the engineering building, or it is buried as a bolt stress gauge in the borehole of the bedrock, slope and underground structure wall that needs to be reinforced. Reinforcement gauges mainly include resistance strain gauge type, differential resistance type, vibrating wire type and other types. The resistance strain gauge type has poor durability and is easy to creep, and the differential resistance type steel bar meter has low sensitivity. At the same time, the differential resistance, vibrating wire type and other electric steel bar meters are seriously ...

Claims

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Application Information

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IPC IPC(8): G01L1/24
Inventor 王军涛邹念椿刘果王梅枝卢新春刘冠军李学胜
Owner STATE GRID ELECTRIC POWER RES INST
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