公开(公告)号：US20240219054A1

公开(公告)日：2024-07-04

申请号：US18558108

申请日：2021-05-13

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Yasuhiro MATSUMOTO ,  Satoshi SHINOZAKI ,  Junichiro TAMAMATSU

IPC: F24F11/49 ,  F24F110/76 ,  G01N33/00

CPC classification number: F24F11/49 ,  G01N33/0063 ,  G01N33/007 ,  F24F2110/76

Abstract: A failure determination system (100) according to the present disclosure includes a ventilation equipment (2); a gas concentration sensor (1) that outputs a detected value corresponding to a gas concentration, issues an alarm on the basis of the detected value, and transits alarm issuance information; and a control device (3). The control device (3) includes a communication unit (31) which receives alarm issuance information, a ventilation control unit (32) which controls the ventilation equipment (2) to execute a ventilation operation on the basis of the alarm issuance information, and a determination unit (33) which determines whether the gas concentration sensor (1) fails on the basis of the alarm issuance information.

公开(公告)号：US20240265546A1

公开(公告)日：2024-08-08

申请号：US18565897

申请日：2021-06-02

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Issei WAKUI ,  Yasuhiro MATSUMOTO

IPC: G06T7/11 ,  G01S17/894

CPC classification number: G06T7/11 ,  G01S17/894 ,  G06T2207/10028

Abstract: An analysis device (1) according to the present invention includes a 3D point cloud data input unit (12) that receives point cloud data inside a structure measured by a laser scanner, a first analysis unit (13) that removes point cloud data other than that of a structure evaluation object from the point cloud data, and a second analysis unit (14) that extracts point cloud data of a place necessary for structure evaluation.

公开(公告)号：US20240281947A1

公开(公告)日：2024-08-22

申请号：US18565955

申请日：2021-06-02

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Issei WAKUI ,  Yasuhiro MATSUMOTO

IPC: G06T7/00 ,  G06T7/13 ,  G06T7/593 ,  G06T7/60 ,  G06T17/00

CPC classification number: G06T7/0002 ,  G06T7/13 ,  G06T7/593 ,  G06T7/60 ,  G06T17/00 ,  G06T2207/10012 ,  G06T2207/10028 ,  G06T2207/30241 ,  G06T2210/56

Abstract: An analysis device (1) according to the present invention includes an internal image input unit (11) that receives an image of the inside of a structure captured by moving a stereo camera, a 3D point cloud data generation unit (12) that generates point cloud data of an internal structure of the structure by each internal image on an image-capturing route, a first analysis unit (13) that removes point cloud data other than a deterioration prediction target from the point cloud data, and a second analysis unit (14) that extracts point cloud data in a space within a predetermined distance from a camera trajectory of the stereo camera from the point cloud data removed by the first analysis unit.