• Journal of the Society of Naval Architects of Korea
• /
• v.60 no.6
• /
• pp.406-415
• /
• 2023

In this study, we focused on developing and verifying ship collision avoidance algorithms using Unity simulator and ROS(Robot Operating System). ROS is used to establish an environment where communication between different operating systems is possible, and a dynamic model of a ship is constructed within Unity simulator. The Lidar data collected in Unity environment is passed to the system based on python through ROS. In the system based on python, control command values were created through the logic of the collision avoidance algorithm using data, and the values were transferred back to Unity to control the movement of the virtual ship. Through the developed simulation system, the reliability of the collision avoidance algorithm of ships with two different forms in an environment similar to the actual physical world was confirmed. As a result, it was confirmed on the simulator that it could be avoided without collision even in an environment with various types of obstacles, and that the avoidance characteristics according to the dynamics of the ship could be analyzed.

• Proceedings of the Korea Society for Simulation Conference
• /
• 2002.11a
• /
• pp.41-46
• /
• 2002

이 연구는 기존 VTS 시스템의 효율성을 증대시키기 위해 VTS 시스템에 선박조종 시뮬레이터를 기능적으로 연계시켜 VTS 시스템을 3차원으로 확장시키고자 시도된 것이다. 기존의 VTS 시스템은 ARPA Radar를 이용한 2차원에 국한된 관제 시스템이나 이 시스템에 분산처리 네트워크방식을 적용하여 3차원 기능을 가진 VTS 시스템으로의 확장이 가능하도록 하였다. 이러한 확장된 VTS 시스템의 운용은 선박의 안전운항에 큰 역할을 할 수 있을 것으로 기대된다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2021.11a
• /
• pp.136-138
• /
• 2021

본 논문은 경남무인선박 규제자유특구 혁신사업육성 실증 사업의 일환으로 선박해양플랜트연구소(KRISO) 주관으로 수행한 연구 개발 사업의 실증 시험 수행 및 성과에 관련된 내용임. 선박해양플랜트연구소 무인선 아라곤2호와 3호에 적용한 원격관제 시스템의 고도화 및 성능개선 관련 연구개발 수행 중이다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2013.10a
• /
• pp.32-33
• /
• 2013

In the past, the scenario of VTS simulator was made by instructor's manual operation using waypoint definition of target ship. but in this study, we use automatic scenario creation technology with AIS data and Port-MIS data. The created VTS simaulator scenario also can be modified, added, and saved by instructor's manual operation. VTS simulator display target ship on the Electronic Navigation Chart based on S-57 format. A instructor can easily open this scenario and start, pause, stop operation wirth VTS simulator. A new modification also can be applied immediately to current scenario and can be saved new scenario file. VTS simulator using this technology can create many scenarios for a specific purpose and can be easily used for various application fields.

• Journal of the Society of Naval Architects of Korea
• /
• v.47 no.6
• /
• pp.776-781
• /
• 2010

In the ship-handling simulator, it is important for a ship manoeuvring model to represent the dynamic characteristic of a ship and to be simple for reducing calculation time. Especially, even if principal dimensions of a ship are given in initial design stage, or manoeuvring test data are only given by model or real ship's trials, simulations are often needed to check the manoeuvrability of a ship. In this paper, a simple manoeuvring model based on turning test data of a ship is mathematically developed. And the simulation results are verified by comparing with turning test results of a real ship.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.19 no.2
• /
• pp.138-144
• /
• 2013

Large and small marine accidents which are related to vessel's navigation are happening continuously and these maritime accidents have caused loss of lives and properties, and serious maritime environmental pollution damage. It is also true that maritime pollution damage is increasing due to these accidents, probability of growth of seaborne volume and complicated maritime traffic environment. Korea, recently, is developing an evaluation index which can assess sea risk through the evaluation of maritime traffic environment and provide danger and general information with relation to maritime traffic environment on target sea area to evaluate maritime traffic safety. In this paper, we intend to confirm the validity of maritime traffic safety on the basis of vessel navigator's risk consciousness and various sailing conditions by using the ship handling simulator. To confirm the validity of sailing vessel's maritime traffic safety, we use analysis of variance. By using analysis of variance, we analyze vessel navigator's characteristics, distance, speed and encounter type between vessels. Through multiple comparison of each factor's risk difference, we can confirm the change of numerical value of risk difference in statistical aspect.

• Journal of Korean Port Research
• /
• v.5 no.2
• /
• pp.39-63
• /
• 1991

A PC-based ship maneuvering simulator was developed which was configured in a high performance IBM PC compatible i486 and i286 computer with a TMS 340 graphic signal processor and 10 MBPS Ethernet Cards. A real-time ship maneuvering simulation program was developed which includes computer generated imagery (CGI) for bird's eye view type and perspective view type. The simulator H/W was designed and manufactured and S/W for interface of various navigation equipments was made Especially, programs for output, analysis, and assessment of simulations results were developed. Communications between PC's are made by using Ethernet bus type LAN system. Simulations could be performed under various environments (current, wind, wave etc.) using data base of harbors and ships. This system can be used for various purposes such as crew's training, harbor and waterway design, and assessment of ship maneuverability in harbor.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2010.10a
• /
• pp.180-181
• /
• 2010

An estimation algorithm of collision risk among multiple ships has been developed in order to reduce human error and prevent collision accidents. The algorithm is designed to calculate the collision risk among ships based on Fuzzy theory by using AIS data as traffic information. In this paper, to validate the algorithm, the AIS data of actual collision accident, which occurred between a product carrier and a cargo carrier in Busan harbor in 2009 are collected. The replay simulation is carried out on the actual AIS data and the collision risk is calculated in real time. In this paper, the features of the estimation algorithm of collision risk and the results of replay simulation based on AIS data of actual collision accident are discussed.

• Journal of Navigation and Port Research
• /
• v.34 no.10
• /
• pp.727-733
• /
• 2010

An estimation algorithm of collision risk among multiple ships has been developed in order to reduce human error and prevent collision accidents. The algorithm is designed to calculate the collision risk among ships based on Fuzzy theory by using AIS data as traffic information. In this paper, to validate the algorithm, the AIS data of actual collision accident, which occurred between a product carrier and a cargo carrier in Busan harbor in 2009 are collected. The replay simulation is carried out on the actual AIS data and the collision risk is calculated in real time. In this paper, the features of the estimation algorithm of collision risk and the results of replay simulation based on AIS data of actual collision accident are discussed.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2013.06a
• /
• pp.502-503
• /
• 2013

Triple-E(1만 8천 TEU급) 컨테이너선은 경제성, 에너지효율, 친환경 등을 고려한 초대형 컨테이너선으로 2013년 7월경에 부산신항에 입항할 예정이다. 부산신항에는 현재까지 1만 6천 TEU급 컨테이너선이 입항한 바 있으며, 이러한 세계최대 크기급 컨테이너선 입항 계획에 따라, 선박조종시뮬레이터를 이용하여 부산신항 진입항로 및 토도 부근 수역에서의 선박운항 안전성 검토를 수행하였다.