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A micro-distance seepage monitoring sensor

A technology for monitoring sensors and seepage, applied to instruments, measuring devices, scientific instruments, etc., can solve the problems of not being able to detect early seepage and hidden dangers in time, and achieve the effect of improving the spatial resolution of measurement

Active Publication Date: 2018-01-09
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a micro-distance seepage monitoring sensor, which solves or partially solves the technical problem that the early seepage and hidden dangers of leakage cannot be found in time in the prior art

Method used

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  • A micro-distance seepage monitoring sensor

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Embodiment Construction

[0017] see figure 1 , The embodiment of the present invention provides a micro-distance seepage monitoring sensor including: a core rod 6, a wire and an optical fiber 7. The wire is wound on the mandrel 6 . Marking points for marking the scope of the actual measurement area 3 are also arranged on the mandrel; the calibration points include a calibration zero point and a calibration end point; the area between the calibration zero point and the calibration end point constitutes the actual measurement area 3 . The length of the non-uniform area 5 is smaller than the length of the interference area 4 . The length of the fiber zone 2 is less than the length of the core rod 6 . Mandrel 6 is cylindrical. The mandrel 6 has a smooth surface. The mandrel 6 consists of a PVC pipe. The wires include heating wires. The optical fiber 7 is wound on the wire. The radius R of the sensor is greater than 12.5mm. The length of the sensor is 1 m. The wire is evenly wound on the mandrel 6...

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Abstract

The invention discloses a micro-distance seepage monitoring sensor, which belongs to the technical field of seepage monitoring. The micro-distance seepage monitoring sensor includes: a mandrel; a wire wound on the mandrel; an optical fiber wound on the wire; wherein the wire is evenly wound on the mandrel, and the wire is locally heated The method amplifies the temperature field disturbance, and then winds the optical fiber on the wire to form an optical fiber area; the optical fiber area is composed of an interference area and an actual measurement area; the interference area is distributed at both ends of the actual measurement area ; The distribution of optical fibers in the measured area is uniform; the interference area includes an inhomogeneous area, and the distribution of optical fibers in the inhomogeneous area is not uniform. The micro-pitch seepage monitoring sensor of the present invention makes the distance of seepage monitoring points dense in space, thereby improving the spatial resolution of measurement, and being able to detect early seepage and hidden dangers of leakage in time.

Description

technical field [0001] The invention relates to the technical field of seepage monitoring, in particular to a micro-distance seepage monitoring sensor. Background technique [0002] In order to alleviate the shortage of water resources in North China and Northwest China, the South-to-North Water Diversion Project has a total length of more than 1,300 kilometers. Many natural rivers from west to east have been cut off from south to north. For this purpose, many crossing buildings have been built. The embankment-crossing structures such as traffic bridges make the problem of seepage and seepage between the canal embankment and the structure prominent. Leakage at the joints of numerous oil pipeline networks and sewage pipelines will cause serious pollution to groundwater, and early detection of hidden dangers of leakage is the key to avoiding disasters. [0003] For the detection of seepage, most of the existing technologies only aim at the late seepage with a wide range and a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20G01K11/32
Inventor 段云岭冯金铭侯时雨温佳琦徐冰王仪心刘千惠
Owner TSINGHUA UNIV
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