• Journal of Advanced Marine Engineering and Technology
• /
• v.37 no.2
• /
• pp.183-191
• /
• 2013

International network standards for SOLAS ship are composed of instrument network that controls and monitors machine in real time, shipboard control network that controls and monitors system through computer by human and telecommunication network that connects ship and shore. This paper describes development of stack for instrument network protocol complied with NMEA 2000 that is IEC 61162-3 international standards for SOLAS ship and also that of engine room monitoring system using the developed stack. Developed engine room monitoring system is certified by NMEA according to standards that require to pass about 1,600 test procedures.

• Journal of Advanced Marine Engineering and Technology
• /
• v.39 no.6
• /
• pp.642-648
• /
• 2015

Recently, there have been many studies pertaining to reducing energy consumption on ships. As part of those studies, the energy consumption of ships can be reduced by understanding and controlling the varying loads, excluding fixed loads. In existing ships, engine room fans are usually operated based on the actual experience of the crew without any special guidelines. To realize energy reduction, we investigate the characteristics of engine-room fans, and we propose an energy-management system called the engine room fan control system (ERFCS) and the ERFCS algorithm. The ERFCS controls the fan speed depending on the temperature and pressure, where one to four fans are operated depending on changes in the load. In addition, the minimum rotation speed of the engine-room fan was limited to 50% to prevent the surging phenomenon, which is due to fan damage or low pressure resulting from mechanical friction or heating at low fan speeds. We develop a fan control system simulation model using LabVIEW that is based on the proposed algorithm and ISO 8861. Finally, we perform simulations to confirm that operation of the proposed fan control system is possible using only 46.4% of the power required by the existing method.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.27 no.7
• /
• pp.1129-1136
• /
• 2021

A pan-tilt-zoom (PTZ) camera-based monitoring system for efficient monitoring in the engine room of a vessel was designed. A number of places exist where traditional analog instruments are still used in vessel engine rooms, and blind spots closely related to safety exist, for which flooding or fire is a concern. A camera-based monitoring system that guarantees a wide range at a relatively fast cycle for these monitoring points can be an effective alternative to enhance the safety of a vessel. Therefore, a multiview monitoring system is proposed in which the functions of the existing PTZ camera are further strengthened using a software. The monitoring system comprises four modules: camera control, location registration, traversal control, and multiview image reconstruction. The effectiveness of the method was evaluated through a series of experiments in an engine room environment.

• 전기의세계
• /
• v.24 no.5
• /
• pp.53-56
• /
• 1975

선박에 본격적으로 자동화시스템이 채용되게 된 것은 1960년대의 일로서 주기관을 Bridge에서 직접 제어하는 방식을 채용하고 기관실에도 Control Room을 만들어 주기 및 보기등의 원격제어와 집중감시를 Control Console에서 가능하도록 하게 함으로써 발전하기 시작하였다. 세계무역량의 증가로 인한 선복량의 증가와 선원의 부족현상은 선박에도 고도의 자동화를 요구하게 되었고 선진조선국들은 선박자동화의 기술개발에 힘써 현재에는 각국의 선급협회들도 모두 기관실무인화에 관한 규격을 제정하여 이에 합격한 선박에 대해서는 부호들을 붙여주고 있다. 이와같이 기관실무인화는 자동화기술을 집대성한 것이라고 말할 수 있지만 최근에는 기술적으로 더욱 1보 전진하여 선박에 Computer를 탑재하고 기관의 자동화뿐만 아니라 항법과 선체 및 의장계통에까지 광범위하게 응용하기에 이르렀으며 실험단계를 거쳐 세계각국에서 실적선들이 출현하게 되었다.

• Journal of the Korean Society for Aeronautical & Space Sciences
• /
• v.37 no.1
• /
• pp.76-81
• /
• 2009

A nonlinear pressure controller to actively regulate the thrust of a solid propulsion system is presented. To compensate for the parametric uncertainties with respect to the chamber pressure induced by changing nozzle throat area, Lyapunov-based parameter adaptation method has been applied. In order to verify the effectiveness of the proposed control method, the experiments were carried out using the cold gas test equipment that can simulate the operating environment of variable thrust solid propulsion system. The experiment results show that the nonlinear pressure controller has better performance than conventional P and PI controller.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.28 no.2
• /
• pp.370-376
• /
• 2022

Smart ships related studies are being conducted in various fields owing to the development of technology, and an engine room patrol robot that can patrol the unmanned engine room is one such study. A patrol robot moves around the engine room based on the information learned through artificial intelligence and checks the machine normality and occurrence of abnormalities such as water leakage, oil leakage, and fire. Study on engine room patrol robots is mainly conducted on machine detection using artificial intelligence, however study on movement and control is insufficient. This causes a problem in that even if a patrol robot detects an object, there is no way to move to the detected object. To secure maneuverability to quickly identify the presence of abnormality in the engine room, this study experimented with whether a patrol robot can determine the shortest path by applying the A* algorithm. Data were obtained by driving a small car equipped with LiDAR in the ship engine room and creating a map by mapping the obtained data with SLAM(Simultaneous Localization And Mapping). The starting point and arrival point of the patrol robot were set on the map, and the A* algorithm was applied to determine whether the shortest path from the starting point to the arrival point was found. Simulation confirmed that the shortest route was well searched while avoiding obstacles from the starting point to the arrival point on the map. Applying this to the engine room patrol robot is believed to help improve ship safety.

• Proceedings of the Korean Nuclear Society Conference
• /
• 1998.05a
• /
• pp.233-238
• /
• 1998

SMART 인간기계연계(MMI : Man Machine Interface)는 발달된 컴퓨터 기술과 디스플레이 기법을 기반으로 설계되고 있으며, 이는 안전성과 생산성을 향상시키려는 의도를 갖고 있다. 현재, 최신 기술을 적용한 제어실 설계는 인간기계연계 설계자, 발전소 운영회사, 규제기관 등 모두에게 관심의 대상이다. 최신 기술을 제어실 설계에 적용할 경우에는 객관성 있는 설계 평가를 통하여 설계 결과가 안전성 향상에 기여함은 물론 운전작업자에게 유용함을 가시적으로 입증할 필요가 있다. 본 논문에서는 SMART 인간기계연계설계 평가를 위해 개발된 절차의 구성과 평가작업 내용을 기술하였다.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.22 no.1
• /
• pp.131-139
• /
• 2018

Many ship researches have been carried out in connection with the fourth revolution, one of which focuses on EMS(energy management system). The EMS is referred to as systems for managing the energy of ships and include various systems. In this paper, we analyze the energy saving field in ship and propose a ship power energy management system including individual load control systems that can save energy in the engine room. EMS includes individual load control systems of PCS (Pump Control System), ERFCS (Engine Room Fan Control System), LCS (Load Control System), HVACS (Heating, Ventilation, Air conditioning Control System). Proposed EMS primarily conserves energy in the individual load systems of the engine room. Secondly, the integrated monitoring and control system is used to control the power generation system and the power load system to save energy.

• Proceedings of the Korean Society of Propulsion Engineers Conference
• /
• 2012.05a
• /
• pp.468-471
• /
• 2012

This paper describes a construction scheme of hot backup or triple modular redundancy control system in a ground hot-firing test facility to carry out performance assessment of propulsion system used in a space launch vehicle. It was possible for a hot backup redundancy control system with manual operated console to simulate TMR control system. A console layout of control system in control center to restrict imprudent works of operators was proposed.

• Proceedings of KOSOMES biannual meeting
• /
• 2006.11a
• /
• pp.125-129
• /
• 2006

It is very important to remove the noise levels made by an electric home appliance and machines they are located in the auditory region. The noise of ship engine room is known as it is not easy to lower so the working environment of the engine room is the worst condition because the improvement for the noise seemed insignificant and the hearing loss is occurred. As the monitoring equipment and an intelligent control system are improved rapidly the main engine of the ship can be enclosed with an acoustic barrier and any other absorbtion equipment. In this study, the sound absorbtion barrier is experimentally researched by change the volume and the length of the neck for the Helmholtz resonator as the resonator can absorb the noise effectively.