Sponge city permeable pavement water level monitoring system based on fiber bragg grating

A fiber grating, permeable pavement technology, applied in permeability/surface area analysis, liquid level indicators for physical variable measurement, roads, etc., can solve problems such as weakening water permeability, and achieve accurate judgment and good monitoring effects.

Active Publication Date: 2020-03-17
WUHAN UNIV OF TECH
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  • Application Information

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Problems solved by technology

[0003] However, its water permeability will weaken over time, which will have adverse effects on the water storage, water seepage, drainage and other functions of the sponge city. Theref

Method used

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  • Sponge city permeable pavement water level monitoring system based on fiber bragg grating
  • Sponge city permeable pavement water level monitoring system based on fiber bragg grating
  • Sponge city permeable pavement water level monitoring system based on fiber bragg grating

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[0027] The present invention will be further described in detail below in conjunction with the description of the drawings and the specific embodiments.

[0028] See Figure 1 to Figure 4 , A spongy urban permeable pavement water level monitoring system based on fiber grating, comprising at least one monitoring unit 2 buried under the permeable pavement 1, and the monitoring unit 2 is connected to the signal processing device 3 via an optical cable 33 ;

[0029] A single monitoring unit 2 includes at least two fiber grating temperature sensors 4, all fiber grating temperature sensors 4 are arranged in sequence along the direction of gravity, and adjacent fiber grating temperature sensors 4 are connected in series;

[0030] A single fiber grating temperature sensor 4 includes an aluminum housing 41 and an optical fiber 42. The optical fiber 42 is provided with a grating area 421 on the portion located in the aluminum housing 41. The grating area 421 is provided with a grating 422. Th...

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Abstract

The invention discloses a sponge city permeable pavement water level monitoring system based on a fiber bragg grating. The system comprises at least one monitoring unit, wherein the monitoring unit isburied below a permeable pavement, the monitoring unit is connected with a signal processing device through an optical cable, each monitoring unit comprises at least two fiber bragg grating temperature sensors, all the fiber bragg grating temperature sensors are sequentially arranged in the gravity direction, the adjacent fiber bragg grating temperature sensors are connected in series, each fiberbragg grating temperature sensor comprises an aluminum shell and an optical fiber, grating areas are arranged on portions, located in the aluminum shell, of the optical fibers, the portions, locatedon two sides of the grating areas, of the optical fibers are fixedly connected with an inner wall of the aluminum shell, and the portions, extending out of the aluminum shell, of the optical fibers are connected with the optical fibers on the adjacent fiber grating temperature sensors in series. The system is advantaged in that the system not only can monitor water permeability of the pavement fora long time and is good in monitoring effect, but further is high in monitoring reaction speed and high in accuracy.

Description

technical field [0001] The invention relates to a permeable road surface water level monitoring system, which belongs to the field of sponge city health monitoring, in particular to a sponge city permeable pavement water level monitoring system based on optical fiber gratings. Background technique [0002] With the rapid development of urban construction in our country, the construction concept of "sponge city" has gradually entered the public's field of vision. The main content of the current "sponge city" construction is the construction of low-impact development (LID) rainwater system. Among them, permeable pavement is more and more used in urban roads due to its good performance and outstanding advantages, and has become a key point in the construction of sponge city. An important part of. The permeable pavement in urban roads is usually made of permeable bricks, which have good air permeability, water permeability and water retention. Rainwater can penetrate through th...

Claims

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Application Information

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IPC IPC(8): G01N15/08G01K11/32G01F23/22E01C11/22G01K11/3206
CPCG01N15/08G01K11/32G01F23/22E01C11/225G01N2015/0846
Inventor 梁磊刘辉王慧徐刚王宁
Owner WUHAN UNIV OF TECH
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