-
公开(公告)号：US20220214383A1
公开(公告)日：2022-07-07
申请号：US17609984
申请日：2020-05-11
发明人： Kazuma TAKENAKA , Tetsuya ISHIKAWA , Minako TERAO , Kotaro OGAWA , Saki KOBAKO , Naoki NOGUCHI
摘要： A current measurement device includes: four or more triaxial magnetic sensors arranged to have predefined positional relationships such that magnetism-sensing directions thereof are parallel to each other; and a calculator configured to calculate currents flowing through a pair of conductors to be measured, which are arranged in proximity to each other, based on detection results of the four or more triaxial magnetic sensors and the positional relationships between the four or more triaxial magnetic sensors, the currents flowing in mutually opposite directions.
-
公开(公告)号：US20170307566A1
公开(公告)日：2017-10-26
申请号：US15492265
申请日：2017-04-20
发明人： Tetsuya ISHIKAWA , Shinya MITO
摘要： A thinning detection system includes a current applying apparatus configured to apply an AC current to electrodes installed on metal equipment which is a monitoring object, a magnetic-field measuring apparatus including an array of magnetic sensors configured to measure a magnetic field distribution of a surface side of the metal equipment; and a measurement managing apparatus configured to estimate a thinning distribution of the metal equipment based on a magnetic field distribution difference which is a difference between a reference magnetic-field distribution which is obtained in a case where thinning has not occurred in the metal equipment and a measurement magnetic-field distribution which is an actual measurement result. The measurement managing apparatus calculates a virtual current distribution of the metal equipment from the magnetic field distribution difference, and estimates the thinning distribution of the metal equipment on the basis of a virtual eddy current represented by the virtual current distribution.
-
公开(公告)号：US20150139494A1
公开(公告)日：2015-05-21
申请号：US14542797
申请日：2014-11-17
发明人： Tetsuya ISHIKAWA , Nobuo OKABE , Yosuke ISHII , Ken'ichi KAMADA
CPC分类号： G06K9/00624 , G06K9/00711 , G06K9/4604 , G06T7/248 , G06T7/254 , G06T11/60 , G06T2207/10016 , G06T2207/20021 , G06T2207/30232
摘要： A slow change detection system includes: an image acquisition unit adapted to acquire a photographed image including consecutive images of a monitored object; a reference image acquisition unit adapted to acquire a reference image corresponding to the photographed image of the monitored object; a reference image area extraction unit adapted to extract, from the reference image, a reference image area that is an area corresponding to a photographed area of the photographed image; a change detection unit adapted to acquire a change area that is an area of the photographed image which is different from the reference image area and acquire a slow change area by excluding, from the acquired change area, a sudden change area derived from a history of the change area; and a display control unit adapted to superimpose and display information indicating the slow change area on the photographed image.
摘要翻译： 缓慢变化检测系统包括：图像获取单元，适于获取包括监视对象的连续图像的拍摄图像; 参考图像获取单元，其适于获取与被监视对象的拍摄图像相对应的参考图像; 参考图像区域提取单元，其适于从参考图像提取作为与所拍摄图像的拍摄区域相对应的区域的参考图像区域; 改变检测单元，其适于获取作为与所述参考图像区域不同的所述拍摄图像的区域的变化区域，并且通过从所获取的变化区域中排除从历史获得的突变变化区域来获取缓慢变化区域 变化区; 以及显示控制单元，其适于在所拍摄的图像上叠加并显示指示所述缓慢变化区域的信息。
-
公开(公告)号：US20210088557A1
公开(公告)日：2021-03-25
申请号：US16971927
申请日：2019-02-05
发明人： Kazuma TAKENAKA , Tetsuya ISHIKAWA , Minako TERAO , Kotaro OGAWA , Saki KOBAKO
摘要： A current measuring device (1) includes two triaxial magnetic sensors (11, 12) that are arranged with a prescribed gap between the the two triaxial magnetic sensors (11, 12) such that magnetic-sensing directions of the two triaxial magnetic sensors (11, 12) are parallel to each other, and a calculator configured to calculate a current (I) flowing in a measurement-object conductor (MC) based on detection results from the two triaxial magnetic sensors (11, 12) and a gap between the two triaxial magnetic sensors (11, 12).
-
-
-
搜索结果
4 条记录 (耗时 0.014 秒)
