Abstract


Aiming at improvement of task performance and reduction of human error of water system isolation task in Nuclear Power Plant (NPP) periodic maintenance, a support system using state-of-the-art information technology, Augmented Reality (AR) and Radio Frequency Identification (RFID) has been proposed, and a prototype system has been developed. The system has navigation function of which an indication is superimposed directly on the user¡Çs view to help to find the designated valves by AR. It also has valve confirmation function by scanning RFID tag attached on the valve. In case of applying it to practical use, its information presentation device is important because it affects not only the system configuration but also the task performance. In this study, therefore, an appropriate information presentation device has been pursued by conducting subject experiments employing psychological experimental technique. The candidates of the devices are one-eye video see-through HMD (SCOPO), both-eye video see-through HMD (Glasstron), tablet PC and compact TV. In the experiment, task completion time, number of errors, NASA-TLX score as subjects¡Ç mental workload and subjective usability questionnaire were measured when using the above devices. As the results, it was found that SCOPO was an appropriate device as wearable system configuration, and compact TV was an appropriate device as handheld system configuration.

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(C) 2020 Hirotake Ishii