1. はじめに近年、電力自由化に伴って、原子力発電に伴うコス ト削減が強く要求されるようになってきた。それに加 えて熟練作業員の減少が進んでいることや、さらには 後継者に保守作業の技術伝承を行っていくことの難し さも問題となっている。その一方で、発電設備自体の 高経年化や CBM(Condition Based Maintenance)の導入に よって、ますます保守作業のありかたは複雑になって きており、保守作業支援の高度化が望まれている。そこで、拡張現実感技術を利用して保守作業を支援 するシステムを利用......
英字タイトル:
Development of Tracking Method for Augmented Reality System for Plant Maintenance Support

This study aims at developing an augmented reality system to support maintenance work of nuclear power plants. An accurate and wide-range tracking method is required as a key technology in order to realize the system. In this study, a new tracking method using multi-camera a nd gyro sensor has been developed in order to enlarge the area where the tracking is available with limited number of markers. Experimenta l evaluation result shows that the area where the developed method can cover is about 3 times l...
英字タイトル:
Development and Evaluation of Tracking Method for Augmented Reality System forNuclear Power Plant Maintenance Support

This study aims at developing an augmented reality system to support maintenance work of nuclear power plants. An accurate and wide-range tracking method is required as a key technology in order to realize the system. In this study, a new tracking method using multi-camera and gyro sensor has been developed in order to enlarge the area where the tracking is available with limited number of markers. Experimental evaluation result shows that the area where the developed method can cover is about 3 time...
英字タイトル:
Development and Evaluation of Tracking Method for Augmented Reality System for Nuclear Power Plant Maintenance Support

Abstract Aiming at improvement of task performance and reduction of human error of water system isolation task in NPP periodic maintenance, a support system using state-of-art information technology, Augmented Reality (AR) and Radio Frequency Identificat ion (RFID) has been proposed under the concept of off-site operation and maintenance support center, and a prototype system has been developed. The system has navigation function of which an indication is superimposed directly on the user's view to help to...
英字タイトル:
A Support System for Water System Isolation Task of Nuclear Power Plant by using Augmented Reality and RFID

Aiming at improvement of task performance and reduction of human error of water system isolation task in NPP periodic maintenance, a support system using state-of-art information technology, Augmented Reality (AR) and Radio Frequency Identification （RFID）has been proposed under the concept of off-site operation and maintenance support center, and a prototype system has been developed. The system has navigation function of which an indication is superimposed directly on the user's view to help to find ...
英字タイトル:
A Support System for Water System Isolation Task of Nuclear Power Plant by using Augmented Reality and RFID

In this study, an automatic registration system was developed that can measure 3 dimensional position and orientation of multi-range fiducials automatically using a camera, laser range finder and motion bases connected to a computer. Result of the experimental evaluation shows that the measurement takes about 50 seconds per marker and RMSE (Root Mean Square Error) of the position and orientation measurement are 3.5 mm and 1.2 degrees respectively....
英字タイトル:
Development and Evaluation of Automatic Registration System for Multi-Range Fiducials Applied to Augmented Reality

During the maintenance of nuclear power plants, it is important to reduce the radiation exposure of the workers. Auditory sensation has been widely used for alerting them to the radiation exposure such as personal dosimeters, which alert the user to radiation level by acoustic alarms. Although the measurement of radiation intensity has been more and more precisely, few study has focused on the selection of the effective alarm. The objective of this study therefore is to evaluate which acoustic feature is be...

A new fiducial marker for augmented reality was designed along with a method that recognizes the markers captured by a camera and calculates the relative position and orientation between the markers and the camera. These markers can be used at both long and short distances without increasing the number of markers pasted in the environment. Results of the experimental evaluation show that the new marker can be used in a larger area than circular markers and more stably than square markers....
英字タイトル:
Development of Wide Area Tracking Method for Augmented Reality using Multi-Range Fiducials