가상현실 기반 범용 선반 교육 시스템
A Virtual Reality based Education System for General Lathe
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초록
가상현실의 장점 중 하나는 공간과 시간의 제약 없이 간접적인 경험을 사용자에게 제공할 수 있다는 것이다. 또한 다양한 환경에서 발생하는 위험 상황들을 미리 경험하고 현실에서 대비할 수 있으므로, 가상현실은 안전사고가 발생할 수 있는 제조공정을 미리 실습하는 데에 매우 좋은 방법이라 할 수 있다. 이에 본 연구에서는 가상환경 기반의 범용 선반 교육 시스템을 제안한다. 제안하는 시스템은 Unity 3D를 이용하여 개발되었다. 사용자는 본 제안하는 시스템에서 ‘학습모드’ 와 ‘실습모드’를 선택할 수 있으며, 학습 모드에서는 선반 장치의 각 부품별 명칭, 공정 순서, 안전 사항 등을 알 수 있으며, 실습모드 에서는 재료와 도면을 선택하고 각종 스핀들 및 페달을 이용해 공작을 수행할 수 있다. 마지막으로 본 연구에서는 개발된 시스템을 이용해 실무자 및 비 실무자들을 대상으로 사용자 평가를 실시하였으며, 그 결과 제안하는 시스템은 사용자에게 현실적이고 몰입감 있는 선반 교육 시스템을 제공할 수 있어 교육 시스템으로 적합하다는 평가를 얻었다.
Abstract
One of the advantages in virtual reality (VR) is that it can provide indirect experience to users without the space and the time limitations. Furthermore, the VR allows users to avoid every dangerous situations in a various environment, so the VR is a best method to practice manufacturing devices, which can be occurred in dangerous conditions. Therefore, this paper proposes a VR based education system for a general lathe. The proposed system is composed of an head mounted display, controllers, a foot tracker, and a PC. The virtual environment was designed using Unity 3D. A user can study the general lathe with two modes, a study mode and a practice mode. A user can get the information of the general lathe’s each part and a basic to use the general lathe. In the practice mode, a user can select a material and a blueprint, and can control a spindle speed, a handle, and a break paddle by gestures. Furthermore, we recorded real sounds according to the materials and spindle speeds to enhance the experience of users. Finally, user tests are conducted with working-level workers and non-working-level workers, and compared the proposed system and a previously developed VR based general lathe education system. The results show that the proposed system is suitable for teaching educatee.
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