조선소에서 트랜스포터와 블록의 정확한 위치를 파악하는 일은 선박건조 생산 능력을 증가시키는 요소이지만, 현재는 관리자 및 숙련공의 판단에 의해 작업이 진행되고 있는 실정이다. 본 논문에서는 조선소의 주요 이동객체인 트랜스포터 및 블록에 대한 실시간 위치 추적 시스템 구축에 대해 소개하고 그 시스템의 주요 기능 가운데 하나인 블록의 상차/하차 상태를 판단하는 방법을 제안하였다. 이 기능을 구현하기 위해 세 가지 센서가 사용되었다. 첫 번째는 대상 블록을 인식하기 위한 RFID 리더이고, 두 번째는 바닥에 매설된 태그를 인식하여 트랜스포터의 위치를 추적하기 위한 RFID 리더이며 또 하나는 물체 인식을 위한 초음파센서이다. 이를 이용하여 조선소 현장에서 두 차례에 걸쳐 시험이 실시되었고 1차 실험에서 나타난 오류를 수정한 후, 최종실험에서는 현장에 적용 가능한 결과를 얻을 수 있음을 확인하였다.
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