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A Multifunctional Distributed Optical Fiber Sensor for Road Strain Testing and Thermal Conduction Snow Melting

A distributed optical fiber and strain testing technology, applied in the direction of optical devices, roads, instruments, etc., can solve the problems of inability to obtain road service information, etc., and achieve good anti-electromagnetic interference performance, wide application range, and good electrical insulation performance

Active Publication Date: 2021-10-19
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that the existing optical fiber grating sensor can only obtain the force state of the fixed point, but cannot obtain the overall service information of the road surface. Provide a distributed optical fiber sensor for road strain testing and heat conduction snow melting

Method used

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  • A Multifunctional Distributed Optical Fiber Sensor for Road Strain Testing and Thermal Conduction Snow Melting
  • A Multifunctional Distributed Optical Fiber Sensor for Road Strain Testing and Thermal Conduction Snow Melting
  • A Multifunctional Distributed Optical Fiber Sensor for Road Strain Testing and Thermal Conduction Snow Melting

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specific Embodiment approach 1

[0022] Specific implementation mode one: combine Figure 1 to Figure 6 Describe this embodiment, a multifunctional distributed optical fiber sensor for road strain testing and heat conduction snow melting described in this embodiment, the multifunctional distributed optical fiber sensor for road strain testing and heat conduction snow melting includes a plurality of lateral Sensing elements and a plurality of longitudinal sensing elements, the plurality of transverse sensing elements are arranged side by side in parallel, and the ends of the plurality of transverse sensing elements are connected sequentially; the plurality of longitudinal sensing elements are arranged side by side along the length direction of the transverse sensing elements set, and a plurality of longitudinal sensing elements are connected end to end in sequence, and the center line of the transverse sensing element along the length direction is perpendicular to the center line of the longitudinal sensing ele...

specific Embodiment approach 2

[0024] Specific implementation mode two: combination Figure 5 To illustrate this embodiment, each longitudinal sensing element described in this embodiment includes a longitudinal force-bearing optical fiber 1, a longitudinal thermal resistance 2, a longitudinal insulating layer 3, a longitudinal fixing plate 4, a longitudinal terminal post 5, a longitudinal electrified wire 6, a longitudinal protection The sleeve 7 and the longitudinal compensation optical fiber 8, the longitudinal thermal conduction resistance 2 is a cuboid, the upper surface of the longitudinal thermal conduction resistance 2 is provided with a longitudinal insulating layer 3, the two sides of the longitudinal thermal conduction resistance 2 are respectively provided with longitudinal fixing plates 4, and the longitudinal insulating layer The lower surface of 3 is fixedly connected with the upper surface of the longitudinal fixing plate 4, and both ends of the longitudinal thermal conduction resistance 2 ar...

specific Embodiment approach 3

[0032] Specific implementation mode three: combination Figure 5 or Image 6 To illustrate this embodiment, both the longitudinal stressed optical fiber 1 and the transverse stressed optical fiber 9 in this embodiment are strain measuring elements with a coating layer, a cladding and a tight sleeve.

[0033] Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

A multifunctional distributed optical fiber sensor for road strain testing and heat conduction snow melting, which relates to an optical fiber sensor. In order to meet the needs of mechanical performance testing of road surface structures in cold regions and anti-skid snow melting in winter, the invention designs a sensor that can simultaneously realize the The internal mechanical response test of the pavement structure in cold regions and the multifunctional distributed optical fiber sensor for the melting of ice and snow on the pavement. The present invention includes a plurality of transverse sensing elements and a plurality of longitudinal sensing elements, and the plurality of transverse sensing elements are arranged side by side in parallel, and the head and tail of the plurality of transverse sensing elements are connected in sequence to form a series structure; The lengthwise direction of the sensing elements is arranged side by side, and the ends of the longitudinal sensing elements are connected sequentially, and the center line of the transverse sensing element along the length direction is perpendicular to the center line of the longitudinal sensing element along the length direction. The stressed optical fiber is responsible for collecting the internal strain data of the pavement structure in the cold area, and the heat conduction resistance melts the snow through electricity and heat, so as to realize the multi-functionality of the road surface monitoring equipment in the cold area.

Description

technical field [0001] The invention relates to a distributed optical fiber sensor, in particular to a multifunctional distributed optical fiber sensor for road strain testing and heat conduction and snow melting, and belongs to the technical field of optical fiber sensors. Background technique [0002] Mastering the internal mechanical response of pavement structure is a necessary means to evaluate the long-term service performance of pavement in cold regions. At the same time, for roads in cold regions, snow and thin ice on roads in winter will reduce the anti-skid performance of the road surface, which will greatly affect driving safety and traffic capacity. Therefore, efficient snow melting and deicing of roads in cold regions are also very important. . [0003] With the development of optical fiber sensing technology, optical fiber sensors are widely used in civil engineering, aerospace, petrochemical, electric power, medical treatment, etc. field is widely used. How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/16E01C11/26
CPCE01C11/26E01C11/265G01B11/18
Inventor 马宪永宋洪阳董泽蛟曹宪成郭宝春
Owner HARBIN INST OF TECH
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