Method for concrete temperature monitoring and simulation back analysis based on thermal imager

A technology of concrete temperature and thermal imager, which is used in the analysis of materials, material analysis by optical means, instruments, etc.

Inactive Publication Date: 2014-06-04
HOHAI UNIV +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a concrete temperature monitoring and simulation anti-analysis method based on a thermal imager, which overcomes the shortcomings of the existing large-volume concrete temperature detection method

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  • Method for concrete temperature monitoring and simulation back analysis based on thermal imager
  • Method for concrete temperature monitoring and simulation back analysis based on thermal imager

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0030] To monitor the temperature of mass concrete, first set up a thermal imaging camera and set the observation parameters of the thermal imaging instrument, such as detector pixels, frame frequency, thermal sensitivity, field of view, etc. After the parameter setting is completed, the data is collected and organized to obtain the infrared thermal image, and then the temperature values ​​of the feature points at different times are analyzed.

[0031] A concrete temperature monitoring and simulation back-analysis method based on a thermal imager, such as figure 1 shown, including the following specific steps:

[0032] Step 1, use the thermal imager to observe the temperature field distribution on the concrete surface, and obtain the temperature data of typical measuring points and the infrared thermal image;

[0033] Step 2. Based on the tempera...

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Abstract

The invention discloses a method for concrete temperature monitoring and simulation back analysis based on a thermal imager, which comprises: observing the distribution of a concrete surface temperature field by using a thermal imager, so as to obtain typical measuring point temperature data and an infrared thermogram; inverting concrete thermodynamic parameters by a shuffled frog leaping algorithm based on the temperature data observed by the thermal imager; simulating a concrete temperature field and stress field based on the inverted concrete thermodynamic parameters; and comprehensively analyzing the concrete cracking condition by using the temperature data observed by the thermal imager and the simulated temperature field and stress field. According to the invention, the correctness of the calculation results and the feasibility of the temperature control scheme are examined by comparing the infrared thermogram with the concrete surface temperature field and stress field in a corresponding simulation model, which overcomes various deficiencies in current large-size concrete temperature detection methods.

Description

technical field [0001] The invention relates to a concrete temperature monitoring and simulation back analysis method based on a thermal imager, and belongs to the technical field of water conservancy and hydropower engineering. Background technique [0002] At present, in the temperature control and anti-cracking of large-volume concrete, one-time embedded thermal resistance sensors are used for temperature monitoring to detect the concrete temperature. In the process of embedding the sensors, it brings construction difficulties to the construction personnel and increases the technical cost. Another On the one hand, technicians need to go to the embedded point to measure the data collected, which also brings difficulties to the work. Since the first use of thermal imaging technology to detect breast cancer in 1957, infrared has been widely used in equipment diagnosis, material non-destructive testing, and automatic testing of test pieces. The use of infrared thermal imaging...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/84
Inventor 许军才沈振中任青文
Owner HOHAI UNIV
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