• Journal of Digital Convergence
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• v.14 no.5
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• pp.427-432
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• 2016

The purpose of this study was to investigate drowning death patients on clinical care and prevention. Drowning accidents that occurred in the Republic of Korea were identified by using the Emergency Activity Daily Report Data from the National Emergency Management Agency (NEMA). The age of drowning accidents was 20-29 years (25.4%). Drowning cases for the months of August was 17.6%. The main circumstance involved in the drowning cases was swimming (45.0%). Half of swimming incidents related the drowning accidents of people attempting to save a life of a family member or friend from the water. The most common location was at a lake or reservoir (40.2%). Drowning is a main cause of accidents in the Republic of Korea. Preventive strategies that may be beneficial for persons contain life jackets or life rings supply, upgrading swimming ability, placing lifeguards based on public education activities.

• Proceedings of the Korea Information Processing Society Conference
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• 2015.04a
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• pp.581-584
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• 2015

드론은 GPS 포인트를 기반으로 무인비행이 가능하다. 이 특징을 활용하는 방안의 하나로서, 우리는 해양사고에서의 인명구조를 대상으로 하였다. 구명조끼를 GPS 신호발생기로 구현하고, 이를 이용한 웨이포인트를 설정함으로써, 드론으로하여금 재난자에게 우선 접근할 수 있도록 구현할 수 있다. 이를 실제 구현하기 위해서는 GPS 신호를 드론의 웨이포인트값으로 바꾸어 넣어주는 소프트웨어적 모듈이 요구되며, 본 연구에서 이를 구현하고자 한다. 우리는 3D 로보틱스의 Quadcopter와 그를 지원하는 Pixhawk를 사용하였다.

• Science of Emotion and Sensibility
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• v.23 no.4
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• pp.105-116
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• 2020

The purpose of this study is to progress the limitations and disadvantages of existing safety clothing by applying high technology to current safety clothing that is produced and distributed only with fluorescent fabrics and retroreflective materials. Therefore, the industrial suspender-type safety belt and engineering technology are introduced, designed, and fabricated to help save a life in an emergency. First, the suspender-type safety belt to be developed is designed to emit light by LED attached to the film, and the body of the belt-wearer is recognized from a distance through retroreflection from the flashing LED. It aims to support people's safety by preventing accidents during roadside work, rescue activities, and sports activities at night. Second, with the development of advanced devices when the user is in an unconscious state due to distress or falls into an unconscious state due to distress or accident, the tilt sensor of the control unit attached to the belt automatically detects the angle of the human body and generates light and sound. It is intended to further enhance the utilization by mounting a sensing and signaling device that generates a distress signal and shaping it in the form of a belt attached to a vest that can be easily detached from the outside of the garment. When the wearer falls due to an accident, the tilt sensor of this belt detects the angle change and then the controller generates a high-frequency sound and repeated LED blinking signals at the same time. In the case of conventional safety vests, it is almost impossible to detect that the person is wearing a vest when there is no ambient light, but in case of the safety belts in this study, the sound and light signals of the safety belt enable us to find the wearer within 100 meters even when there is no ambient light.

• Journal of Advanced Marine Engineering and Technology
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• v.38 no.9
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• pp.1156-1162
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• 2014

To prevent the Sewol incident again, by which the victims are 294 dead and still 10 missing, this study analyzed the change of safety consciousness of passengers onboard ship comparatively before and after the Sewol incident. The survey had performed 2 times at Jeju coastal cruise terminal at February 2014 and May 2014, and effective respondents were 394 and 401, respectively. After the Sewol incidents, the answers' ratio that they would follow the routes that the crews show and they would follow the crews' evacuation guides are decreased 24.5% and 18.5%, respectively. This means that the reliability on the crew members were decreased. Although 77.6% passengers responded that they felt nervousness onboard ship, 60% did not take safety lesson(s) and 45% did not know how to wear a life jacket. And also over 50% did not check the evacuation route map and the location of lifeboat, respectively. Meanwhile, 86.9% respondents answered the system of safey lesson should be changed, which has normally done by TV set.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1076-1077
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• 2023

해상 추락사고에 대응하는 해상 구조 로봇 프로젝트는 항만 근로자의 추락사고 감지와 피해자 구조에 초점을 둔다. 센서와 자율주행 기술을 접목하여 정확하고 효율적인 구조 작업을 가능케 하고, 자체 개발한 워터센서를 활용하여 신속한 구조를 지원한다. YOLO를 이용한 피해자 위치 파악, 블루투스 기반 관리자 어플리케이션, 해상 추락 감지 및 센서를 탑재한 구명 조끼, 자동 구조 작업 등의 기능을 통합하여 항만 근로자의 안전을 보장하며, 해수욕장 등 다양한 환경에서도 확장 가능한 창의적인 기술을 제시한다.

• Journal of IKEEE
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• v.16 no.1
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• pp.62-68
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• 2012

The planar microstrip antenna for the safety communication of life at sea is designed and manufactured to effectively receive the emergency wireless signal from the transmitter on the life vest. The proposed microstrip antenna in this paper is easy to make, light weight and cheap compared to other antennas because of printed antenna fabrication. To overcome the narrow bandwidth, large size and low gain characteristics of microstrip antenna, we use the IDMA(Identical Dual Patch Microstrip Antenna with Air-Gap) structure. The proposed antenna was fabricated with the use of 1.6mm FR4 and measured with the 28.7MHz(6.6%) of bandwidth and 3.04dBi of gain at the frequency of 426MHz. To validate the proposed antenna, we experimented the possible distance range at sea using the commercial UHF transceiver module and obtained over 5km distance for stable communication. This antenna can be widely applied to application of the UHF wireless mobile communication.