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Accurate positioning method for concrete dam new cabin effective temperature measurement optical fiber on the basis of data symmetry analysis

A technology of concrete dams and temperature-measuring optical fibers, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as inaccurate positioning, and achieve the effect of solving inaccurate positioning and effective temperature measurement data.

Active Publication Date: 2018-11-06
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a precise positioning method for the effective temperature measurement optical fiber of the newly poured concrete dam based on the symmetrical analysis of data, which can solve the problem of inaccurate positioning when a single optical fiber continuously monitors the temperature of multiple warehouses of concrete, and realizes Precise positioning of effective temperature-measuring optical fiber for new pouring bin of concrete dam

Method used

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  • Accurate positioning method for concrete dam new cabin effective temperature measurement optical fiber on the basis of data symmetry analysis
  • Accurate positioning method for concrete dam new cabin effective temperature measurement optical fiber on the basis of data symmetry analysis
  • Accurate positioning method for concrete dam new cabin effective temperature measurement optical fiber on the basis of data symmetry analysis

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Embodiment 1

[0053] A precise positioning method for an effective temperature-measuring optical fiber in a new concrete dam pouring bin based on data symmetry analysis, the method includes the following steps:

[0054] Step 1: Optical fiber embedding construction and data acquisition: adopt double-strand binding embedding construction technology, according to the optical fiber embedding design plan, embed distributed optical fibers in the new pouring warehouse of the concrete dam, and record the effective temperature-measuring optical fiber section of the warehouse during the embedding process The size of the key measuring point is measured in meters, and the distributed optical fiber temperature sensing (DTS) system is used to collect the original temperature monitoring data along the single optical fiber in real time, and the original temperature measurement of the optical fiber at any point within 24 hours after the new pouring warehouse is closed The data is used as the data source for ...

Embodiment 2

[0094] Taking the optical fiber temperature measurement data of the 17#-013 warehouse of a certain dam as an example, the effective temperature measurement optical fiber precise positioning method of the new pouring warehouse proposed by the present invention is used to determine the effective temperature measurement point interval of the warehouse and the actual temperature corresponding to each measurement point. At the same time, 3 supporting point thermometers were buried on the upstream surface, the middle part of the warehouse and the downstream surface of the optical fiber buried line, and the reliability of the positioning results was verified by using the measured data of the thermometers at the corresponding positions. 17#-013 warehouse optical fiber and spot thermometer embedding scheme as follows Figure 6 As shown, only the effective temperature-measuring optical fiber section is included, where A and D points are the starting point and end point of embedding, B an...

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Abstract

The invention discloses an accurate positioning method for a concrete dam new cabin effective temperature measurement optical fiber on the basis of data symmetry analysis. The method comprises the following steps that: S1: carrying out optical fiber embedding construction and data acquisition; S2: on the basis of optical fiber original data obtained in S1, carrying out preliminary identification and screening; S3: carrying out the data symmetry analysis; and S4: determining a corresponding relationship among an amount of effective temperature measurement optical fiber measurement points, the interval length of an effective temperature measurement optical fiber temperature sensing glass core position and an optical fiber embedding spatial position, numbering the effective measurement pointof the new cabin, and realizing the accurate positioning of the concrete dam new cabin effective temperature measurement optical fiber. By use of the accurate positioning method for the concrete dam new cabin effective temperature measurement optical fiber on the basis of the data symmetry analysis, the problem of inaccuracy in positioning when a single optical fiber continuously monitors multi-cabin concrete temperature can be solved, and the accurate positioning of the concrete dam new cabin effective temperature measurement optical fiber is realized.

Description

technical field [0001] The invention relates to the technical field of concrete dam construction, in particular to a precise positioning method for an effective temperature-measuring optical fiber in a new pouring bin of a concrete dam based on data symmetry analysis. Background technique [0002] Optical fiber is a continuous linear temperature sensing medium. The temperature measurement system will continuously obtain all temperature data along the length of a single optical fiber with a length of 3-4km according to the set time interval. Monitoring location positioning is the basis for ensuring accurate acquisition of real temperature data at designated locations. The traditional optical fiber positioning generally adopts the rapid cooling agent spraying method, and uses the temperature mutation curve to quickly capture the temperature measurement interval. This method is only suitable for bare fibers that are sensitive to the cooling effect of quick coolant. However, t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 周华维梁志鹏潘志国赵春菊周宜红
Owner CHINA THREE GORGES UNIV