PIPING INSPECTION METHOD AND PIPING INSPECTION SYSTEM

• Main Authors: TATENO JUNICHI, AKECHI YOSHIHIRO, ISHIYAMA KAZUYO, ANDO MAKOTO
• Format: Patent
• Language: English; Japanese
• Published: 27.09.2021
• Subjects: AEROPLANES; AIRCRAFT; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSIONTRANSMISSIONS IN AIRCRAFT; AVIATION; COLORIMETRY; COSMONAUTICS; EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLYING SUITS; HELICOPTERS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; PARACHUTES; PERFORMING OPERATIONS; PHYSICS; RADIATION PYROMETRY; TESTING; TRANSPORTING

To provide a piping inspection method capable of safely, easily, and accurately detecting abnormality of piping.SOLUTION: A piping inspection method in the present invention includes: a first step (S2) of moving an unmanned aircraft in a longitudinal direction of piping; a second step (S3) of projecting an optical image on a surface of the piping from the unmanned aircraft, and photographing the optical image with a visible light camera of the unmanned aircraft; a third step (S4) of calculating a tangential direction of the piping from the optical image; a fourth step (S5) of acquiring a plurality of visible images of the piping with the visible light camera while moving the unmanned aircraft in a circumferential direction of the piping on the basis of the tangential direction, and acquiring a plurality of thermo-images with a thermo-camera of the unmanned aircraft; and a fifth step (S8) of acquiring temperature distribution of the piping from the plurality of visible images and the plurality of thermo-images acquired by repeating the first step to the fourth step, and detecting abnormality of the piping.SELECTED DRAWING: Figure 3 【課題】配管の異常を安全且つ容易に、精度良く検出できる配管の点検方法を提供する。【解決手段】本発明の配管の点検方法は、無人航空機を配管の長手方向に移動させる第１の工程（Ｓ２）と、無人航空機から配管の表面に光学像を投影して、光学像を無人航空機の可視光カメラで撮影する第２の工程（Ｓ３）と、光学像から配管の接線方向を算出する第３の工程（Ｓ４）と、接線方向に基づいて無人航空機を配管の周方向に移動させながら、可視光カメラで配管の複数の可視画像を取得すると共に無人航空機のサーモカメラで複数のサーモ画像を取得する第４の工程（Ｓ５）と、第１の工程〜第４の工程を繰り返して取得された複数の可視画像と複数のサーモ画像から配管の温度分布を取得して配管の異常を検出する第５の工程（Ｓ８）とを備える。【選択図】図３