食品製造工程における選別作業適性評価手法に関する研究

摘要

Experiments on useful field-of-view (UFOV) and eye-head coordination were employed to propose an evaluation method for using it during visual information processing, without distracting the subject's main task. Eye and head movement were measured under the condition in which the subject's UFOV was controlled. In particular, subjects performed two tasks: a simple task for inducing a decrease in alertness and a visual target detection (VTD) task for inducing eye-head coordination. In the simple task, the subjective arousal level and UFOV were measured. UFOV was measured by subjective response to a visual target. As a result of conducting the simple task, it was found that UFOV was narrowed at the time of low arousal. In the VTD task, eye and head movement were measured under the condition in which visual angular distance to the visual target was controlled in steps. As a result of conducting the VTD task, it was found that eye-head coordination to the visual target was influenced by UFOV, eye movement precedes viewing a visual target inside of the UFOV, and head movement precedes viewing a visual target outside of the UFOV. Furthermore, it was indicated that it is possible to detecting narrowed UFOV using the relation between visual angular distance to visual target and response time lag of eye and head movement.%本論文は，人工現実感技術を用いて選別作業適性を容易に推定する手法を提案するものである.本手法では，まず，実コンベアおよび人工現実感技術(VR)を用いて，選別作業に関する実験を行う.次に，クラスター分析を用いて実コンベアで得られたデータ(選別作業時間)を基に，被験者を複数の選別作業適性グループに分ける.その後，交差検証法を用いて，人工現実感装置で得られたデータ(選別作業時間)から実コンベアでの選別作業適性を推定するためのモデルを作り，モデルに基づき，作業員の選別作業適性を推定する.さらに，本論文では，選別作業適性と人員配置との関係も考察した.