• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.22 no.5
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• pp.53-73
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• 2023

Although it is mandatory to wear a seat belt that can minimize human injury when traffic accident occurs, the number of traffic accident casualties not wearing seat belts still accounts for a significant proportion.The seat belt wearing detection system for all seats is a system that identifies whether all seat passengers wear a seat belt and encourages their usage, also it can be a useful technical countermeasure. Firstly, this study established the viability of system implementation by assessing the factors influencing the severity of injuries in traffic accidents through the development of an ordered probit model. Analysis results showed that the use of seat belts has statistically significant effects on the severity of traffic accidents, reducing the probability of death or serious injury by 0.054 times in the event of a traffic accident. Secondly, a meta-analysis was conducted based on prior research related to seat belts and injuries in traffic accidents to estimate the expected reduction in accident severity upon the implementation of the system.The analysis of the effect of accident severity reduction revealed that wearing seat belts would lead to a 63.3% decrease in fatal accidents, with the front seats showing a reduction of 75.7% and the rear seats showing a reduction of 58.1% in fatal accidents. Lastly, Using the results of the meta-analysis and traffic accident statistics, the expected decrease in the number of traffic accident casualties with the implementation of the system was derived to analyze the traffic safety effects of the proposed detection system. The analysis demonstrated that with an increase in the adoption rate of the system, the number of casualties in accidents where seat belts were not worn decreased. Specifically, at a system adoption rate of 60%, it is anticipated that the number of fatalities would decrease by more than three times compared to the current scenario. Based on the analysis results, operational strategies for the system were proposed to increase seat belt usage rates and reduce accident severity.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.01a
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• pp.75-77
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• 2021

다양한 원인으로 매년 수많은 사람이 교통사고로 목숨을 잃거나 크게 다치곤 한다. 최근 교통사고 통계자료에 따르면 졸음운전으로 인한 교통사고가 음주운전이나, 과속보다도 높은 비중을 차지하고 있었다. 또한, 사고가 났을 때 안전벨트를 매지 않은 운전자나 동승객은 부상 정도가 훨씬 심각한 것으로 알려져 전 좌석에 안전벨트를 꼭 착용해야 하는 법도 제정되었다. 그런데도 많은 운전자 및 동승자가 안전벨트를 착용하지 않아 크게 부상을 당하는 사고는 줄지 않고 있다. 이러한 사고와 부상을 줄이기 위하여 본 논문에서는 다중 네트워크를 이용하여 운전자의 졸음 감지 및 운전자, 동승자의 안전벨트 착용 여부까지 실시간으로 판별하는 시스템을 설계하고 구현한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.854-855
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• 2023

안전벨트 미착용 혹은 통학 차량 미하차로 인한 사고를 방지하기 위해 좌석에 압력 센서와 안전벨트에 센서를 부착하여 착석하지 않은 상태, 안전 벨트 미착용, 안전 벨트 착용으로 3단계로 나누어 탑승자의 상태 정보를 운전석에 위치한 디스플레이에 정보를 표시하여 안전 사고가 발생할 가능성을 줄이고자 한다.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.26 no.3
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• pp.93-104
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• 2018

It is mandatory to use car seats for infants and children in the private vehicles in accordance with the traffic law of Korea. Recently, legislation has also been proposed to expand the use car seats to express and intercity buses. This reflects a growing consensus that mandatory infant and child car seats, both for private and commercial vehicles, are essential. However, Korean laws concerning infants and children on board aircraft allow parents or guardians to hold children under two years of age on their laps without any restraint devices. It is not possible for a parent to physically restrain an infant or child, especially during a sudden acceleration or deceleration, unanticipated or severe turbulence, or impact. The use of CRS provides an equivalent level of safety to infants and children as that afforded to adult passengers wearing seat belts. But there is no regulation even about Child Restraint Systems on board aircraft in Korea. To enhance their safety, infants and children should be restrained in an approved child restraint system that is appropriate to their weight and height. It is necessary to examine whether infants and children in flight can achieve the same level of safety as an adult.

• Journal of IKEEE
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• v.22 no.1
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• pp.223-226
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• 2018

Recently, various safety technologies have been extensively developed to protect occupants from accidents. This paper surveys various automotive occupant protection technologies such as antilock braking system, traction control system, electronic brake distribution, electronic stability control, autonomous emergency braking, airbag, seatbelt pretensioner, and active headrest. Their operation principles and implementations are also explained.

• Journal of the korean Society of Automotive Engineers
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• v.18 no.5
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• pp.1-9
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• 1996

에어백 관련기술은 차체 충돌특성 평가, 승객거동분석, 좌석벨트/조향축/에어백의 조화설계 등을 포함하는 시스템 엔지니어링 기술과 충돌감지센서, 가스발생기, 모듈 등을 포함하는 주요 기능 부품의 설계 및 제조기술로 구분된다. 이 중 시스템 엔지니어링 기술은 국내의 완성차 업계의 노력에 의하여 선진국의 수준에 근접하고 있으나 부품의 설계 및 제조기술은 매우 취약한 상황이다. 80년대 후반부터 각국의 에어백 관련 특허 출원 건수가 급증하고 있으며 새로운 기능의 부품들이 속속 개발되고 있다. 에어백 기술의 발전방향은 소형화, 경량화, 저렴화로 요약된다. 차량의 전방 충돌에 대비한 에어백이 주종을 이루고 있으나 측면 충돌에 대비한 side bag, 뒷자석 승객을 보호하기 위한 rear bag 등이 개발되고 있고 최근에는 버스 등 대형차량이나 모터사이클 등에도 에어백을 부착하기 위한 연구가 추진되고 있다. 에어백은 충돌센서(crash sensor), 가스발생장치(inflator), 공기주머니(bag), 덮개(cover), 배선(wire harness) 등으로 구성된다. 이들 중에서 공기주머니, 덮개, 가스발생장치를 결합한 부분 조립품을 모듈(module)이라고 부르고 있다. 이하에서는 에어백을 구성하는 주요 기능부품들의 종류, 특성과 기술개발 동향을 알아보기로 한다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.01a
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• pp.175-176
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• 2021

현재 우리의 사회에는 인간보다 기계가 하는 것이 더 효율적인 일에 대해서 많은 부분이 자동화가 되어가고 있다. 그중 떠오르는 미래산업인 항공산업에서 원활한 이/착륙을 위해 승무원들이 항공기 내부를 돌아다니며 승객과 의자 등받이 체크를 하는 등의 과정에서 번거로움과 어느 정도의 시간이 걸리는 것에 대한 문제를 생각했고, 이 문제를 해결하기 위해 승객 탑승 여부, 승객 착석 여부, 안전벨트 착용 여부를 한눈에 볼 수 있게 표시하고, 승무원과 승객의 불필요한 말과 감정을 만드는 일이 줄어들어 승객과 근무하는 승무원 모두 쾌적하고 원활한 비행을 위해 본 연구를 추진하였다.

• Transactions of the Korean Society of Automotive Engineers
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• v.11 no.3
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• pp.145-154
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• 2003

Occupant simulation models have been used to study trends or specific design changes in several typical crash situations. The ATB, Articulated Total Body, was developed and used to predict gross human body responses to vehicle crashes and pilot ejections. Since the ATB source code is open to public, the user can add their own defined modules and functions. The introduction of seat belts into cars significantly decreased the injury risk of passengers in frontal impacts. In this paper, a new seat belt model was developed and implemented into the ATB. For this purpose, a subroutine of the new seat belt was constructed. A force-deflection function was added to replace an existing function to consider energy absorption. The function includes hysteresis effects of the experiment data of the loading and unloading parts of the seat belt load-extension curve. Moreover, this belt model considers a slip between ellipsoid and belt segments. This paper attempted to validate the ATB program which includes the subroutine of new belt models comparing with the real car frontal crash experiments and MADYMO frontal models. The analysis focusses on the human movement and body accelerations.

• Journal of Auto-vehicle Safety Association
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• v.9 no.3
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• pp.13-18
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• 2017

Since 2015, Euro-NCAP and C-NCAP have enhanced regulation on submarine of rear female passenger. This submarine regulation is a big obstacle to achieve the highest level crash performance. So the objective of this study is to develop new technical way to protect rear female passenger against submarine. In this study, we figured out how design factors of seatbelt affect submarine of rear female passenger by sled test. And we verified that rear passenger submarine can be improved by increasing intersection angle of seatbelt anchor and rotation amount of seatbelt buckle. Based on these results, this paper proposes a new invention of seatbelt buckle and anchor that can improve rear passenger submarine. One is seatbelt buckle that can be detached from stopper to prevent rotation and the other is seatbelt anchor that can be changed the structure so as to incline forward during crash. Finally we proved that submarine of rear female passenger can be improved by the effectiveness of new inventions.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.12 no.6
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• pp.84-92
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• 2013

This study improves the formability in fine-blanking the lock plate of car seat belts using a low carbon steel(SM35C) plate. The optimal die design for the forming process is proposed using rules for process planning based on theories and field experiences. The optimal design is analyzed using commercial finite element software in order to solve the fracture problems in the extrusion process. Through the improved layout based on the FEM results, the fracture of the extruded part and the roll over problem are solved. Furthermore, it is demonstrated through the shown from experiments that the extruded part does not break in the modified die.