Abstract


In order to stabilize energy supply, it is necessary not only to improve power generation system as machines itself, but also to improve its human machine interface. Especially, in the field of maintenance work of nuclear power plants (NPPs), there are some rooms to improve its efficiency and safety by introducing state-of-the-art information technology. Augmented Reality (AR) is one of the promising technologies that will be able to improve efficiency of the maintenance work and reduce human errors. The AR expands the surrounding real world by superimposing computer-generated information on user¡Çs view and represents various information more intuitively than with legacy interfaces such as paper-based instruction documents. In order to apply the AR to the maintenance work, a tracking method that measures position and rotation of workers in real time is indispensable. Until now, many kinds of tracking methods have been developed and applied to many applications, but it is difficult to introduce these conventional tracking methods into NPP maintenance because these methods does not fulfill all requirements from the viewpoint of accuracy, stability and availability when used in NPP. In this study, therefore, a new circular marker has been designed and a tracking system that recognizes plural circular markers at one time and uses them for calculating the position and rotation of the target with high accuracy has been developed. And some experiments have been conducted in order to evaluate the accuracy and reliability of the proposed method.

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(C) 2020 Hirotake Ishii