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Structure evaluation apparatus, structure evaluation system, and structure evaluation method

外国特許コード F180009594
整理番号 5277
掲載日 2018年11月16日
出願国 アメリカ合衆国
出願番号 201715454316
公報番号 20170269204
公報番号 10794990
出願日 平成29年3月9日(2017.3.9)
公報発行日 平成29年9月21日(2017.9.21)
公報発行日 令和2年10月6日(2020.10.6)
優先権データ
  • 特願2016-052944 (2016.3.16) JP
発明の名称 (英語) Structure evaluation apparatus, structure evaluation system, and structure evaluation method
発明の概要(英語) A structure evaluation apparatus has an acquisitor and an evaluator. The acquisitor acquires a distribution that represents a distribution of strength of a reflected wave obtained by an electromagnetic radar scan to a reinforced concrete which comprises concrete and a material other than concrete. The evaluator calculates similarity, with reference to a reference region including the material in the distribution, of other regions including the material than the reference region in the distribution.
従来技術、競合技術の概要(英語) BACKGROUND
Field of Art
Embodiments of the present invention relate to a structure evaluation apparatus, a structure evaluation system, and a structure evaluation method.
Related Art
Japanese Patent Application Publication No. 2005-331404 discloses the non-destructive testing of reinforced concrete structures (hereinafter, “reinforced concrete”), wherein the electromagnetic radar method has been used. In electromagnetic radar method, an electromagnetic radar apparatus radiates reinforced concrete with an electromagnetic pulse and detects the electromagnetic waves reflected from rebars and gaps inside the reinforced concrete. From the characteristics of the reflected waves, it is possible to detect the position of rebars and anomalies such as gaps inside the reinforced concrete. However, in diagnosing the conventional electromagnetic radar measurement results of reinforced concrete, there has been great reliance on experience and intuition. For that reason, there have been cases in which it is not possible to make a stable quantitative evaluation of sturdiness. This type of problem is not limited to steel-reinforced concrete, but is common to all reinforced concrete.
特許請求の範囲(英語) [claim1]
1. A structure evaluation apparatus comprising:
an acquisitor configured to acquire intensity distribution that represents a distribution of strength of a reflected wave obtained by an electromagnetic radar scan to a reinforced concrete which comprises concrete and a material, the material being a material other than concrete; and
an evaluator configured to calculate a correlation value, the correlation value being based on at least one reference region image including the material in the intensity distribution and based on other regions images including the material that are not the reference region image,
wherein the at least one reference region image is an image of a region that is considered sound,
wherein the at least one reference region image includes a first reference region and a second reference region, each of the first reference region and a second reference region being considered sound,
wherein the first reference region includes the material without any intersection between the material and other material in the intensity distribution,
wherein the second reference region includes the material and is the material intersecting with another material in the intensity distribution,
wherein the evaluator calculates correlation value of first regions that are selected in the other regions with reference to the first reference region,
wherein each of the first regions includes the material without any intersection between the material and other material,
wherein the evaluator calculates correlation value of second regions that are selected in the other regions with reference to the second reference region,
wherein each of the second regions includes the material and is the material intersecting with another material,
wherein the evaluator evaluates whether or not each of the first regions is sound based on the calculated correlation value of each of the first regions, and
wherein the evaluator evaluates whether or not each of the second regions is sound based on the calculated correlation value of each of the second regions.

[claim2]
2. The structure evaluation apparatus according to claim 1, further comprising:
an output configured to output a correlation distribution responded on the correlation value of each of the first regions and the correlation value of each of the second regions.

[claim3]
3. The structure evaluation apparatus according to claim 2, further comprising:
a display controller that displays information regarding a selected location selected within the correlation distribution.

[claim4]
4. The structure evaluation apparatus according to claim 1, wherein the material is different in permittivity from concrete.

[claim5]
5. The structure evaluation apparatus according to claim 4, wherein the material is a rebar.

[claim6]
6. A structure evaluation system comprising:
an electromagnetic radar apparatus that generates intensity distribution by scanning, with electromagnetic radar, reinforced concrete that comprises concrete and a material, the material being a material other than concrete; and
a structure evaluation apparatus that comprises an acquisitor that acquires the intensity distribution from the electromagnetic radar apparatus, and an evaluator that calculates a correlation a value, the correlation value being based on at least one reference region image including the material in the distribution and based on other regions images including the material that are not the reference region image,
wherein the at least one reference region image is an image of a region that is considered sound,
wherein the at least one reference region image includes a first reference region and a second reference region, each of the first reference region and a second reference region being considered sound,
wherein the first reference region includes the material without any intersection between the material and other material in the intensity distribution,
wherein the second reference region includes the material and is the material intersecting with another material in the intensity distribution,
wherein the evaluator calculates correlation value of first regions that are selected in the other regions with reference to the first reference region,
wherein each of the first regions includes the material without any intersection between the material and other material,
wherein the evaluator calculates correlation value of second regions that are selected in the other regions with reference to the second reference region,
wherein each of the second regions includes the material and is the material intersecting with another material,
wherein the evaluator evaluates whether or not each of the first regions is sound based on the calculated correlation value of each of the first regions, and
wherein the evaluator evaluates whether or not each of the second regions is sound based on the calculated correlation value of each of the second regions.

[claim7]
7. A structure evaluation method comprising:
acquiring intensity distribution that represents a distribution of strength of a reflected wave obtained by an electromagnetic radar scan to a reinforced concrete which comprises concrete and a material, the material being a material other than concrete; and
calculating a correlation a value, the correlation value being based on at least one reference region image including the material in the intensity distribution and based on other regions images including the material that are not the reference region image,
wherein the at least one reference region image is an image of a region that is considered sound,
wherein the at least one reference region image includes a first reference region and a second reference region, each of the first reference region and a second reference region being considered sound,
wherein the first reference region includes the material without any intersection between the material and other material in the intensity distribution,
wherein the second reference region includes the material and is the material intersecting with another material in the intensity distribution,
wherein the evaluator calculates correlation value of first regions that are selected in the other regions with reference to the first reference region,
wherein each of the first regions includes the material without any intersection between the material and other material,
wherein the evaluator calculates correlation value of second regions that are selected in the other regions with reference to the second reference region,
wherein each of the second regions includes the material and is the material intersecting with another material,
wherein the evaluator evaluates whether or not each of the first regions is sound based on the calculated correlation value of each of the first regions, and
wherein the evaluator evaluates whether or not each of the second regions is sound based on the calculated correlation value of each of the second regions.
  • 発明者/出願人(英語)
  • TAKAMINE HIDEFUMI
  • WATABE KAZUO
  • SHIOTANI TOMOKI
  • TOSHIBA CORPORATION
  • KYOTO UNIVERSITY
国際特許分類(IPC)
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