• Proceedings of the Korean Information Science Society Conference
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• 2012.06d
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• pp.285-287
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• 2012

근래 정부에서는 차량용 블랙박스의 필요성과 효율성을 인식해 모든 차량에 블랙박스(EDR, Event Data Recorder)를 의무적으로 장착하게 하고, 이를 통해 차량의 운행 정보와 상황을 모니터 및 관리를 할 수 있도록 정부 시책을 신설하고 이를 추진하고 있는 중이다. 특히 차량사고 발생시 이를 시뮬레이션하고 분석할 수 있는 자료가 매우 부족하다. 교통사고의 시뮬레이션 사고 차량의 운행정보뿐만 아니라 주변 운행환경 및 운행여건, 다른 차량의 간섭 등 매우 많은 정보가 필요하기 때문이다. 이에 본 논문에서는 블랙박스 간 Ad-hoc network을 이용해 차량의 정보를 공유 할 수 있는 시스템을 제안하고자 한다. 즉, 차량에서 돌발상황이 발생했을 때 발생 차량의 블랙박스 의 정보와 주변 운행하고 있는 차량에 장착되어 있는 블랙박스의 정보를 Ad-hoc network를 통해 사고 발생차량으로 수집, 이를 저장하고 추후사고에 대한 시뮬레이션 에서 이 데이터들을 통해 돌발상황 당시의 주변 차량 흐름과 다른 차량간의 간섭 및 돌발상황 유발 같은 현상을 조금 더 정확하게 시뮬레이션 함으로서 돌발상황에 대한 분석 및 판단에 도움을 줄 것이라 생각한다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.6
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• pp.1429-1434
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• 2014

Recently, SUA(Sudden Unintended Acceleration) are increasingly occurred. However, all the responsibilities of SUA are accepted by an innocent driver despite of painful results due to mystery of accurate cause. If a driver raises this kind of trouble to the corresponding manufacturer, the automaker collects EDR installed in that vehicle and provides the result of their analysis as it turns out most of the analysis results were diagnosed "there is nothing wrong with the car". In this trend, the technology to protect drivers' position from SUA should be developed. In this study, the researchers aimed to develop a black box system that collects additional data from throttle valve which is considered as one of major causes of SUA accidents, in order to explain cause of SUA and defend innocent drivers.

• The Transactions of the Korea Information Processing Society
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• v.4 no.3
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• pp.754-766
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• 1997

In this paper,we implement the Audit Trail Service Sydtem for the EDI Security.It has solved a law dispute between enterprises by informations that have generated by the EDI serice systrm.The audit trail service sys-tem implemented for EDI security satisfied the requirements of audit and the protocol of the security serive of X.435 and X.400.The EDI Security Audit System consists of the event discrimiator,the audit recirder,the audit archiver,and the provider of audit services .The event discriminator classified the reansmitted data from the EDI network ot audit sercices.The audit recorder constructs an index that has combined time information wiht audit unformations which are classified by the event discriminator.ZThe audit archiver performas the vacumming of added audit imformations by passing time by passing time.The audit provider is a module that carries out the audit trail servies by using stored audit informations. The audit provider suports audit servies,which are non-requdiation,proof and probe,controller of security,and accesing infrimation.The audit trail service system for EDI security constructs audit information by using index that is combining time imfromation,so it supports especially fast accesing audit information.

• Journal of the Institute of Electronics and Information Engineers
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• v.51 no.2
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• pp.114-123
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• 2014

Vehicle Black Box (Event Data Recorder EDR) only recognizes the general surrounding environments of load. In addition, general EDR is difficult to recognize the images of a sudden illumination change. It appears that the lens is being a severe distortion. Therefore, general EDR does not provide the clues of the circumstances of the accident. To solve this problem, we estimate the value of Normalized Luminance Descriptor(NLD) and Normalized Contrast Descriptor(NCD). Illumination change is corrected using Normalized Image Quality(NIQ). Second, we are corrected lens distortion using model of Field Of View(FOV) based on designed method of fisheye lens. As a result, we propose integration algorithm of two methods that correct distortions of images using each Gamma Correction and Lens Correction in parallel.

• Journal of Auto-vehicle Safety Association
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• v.13 no.3
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• pp.78-85
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• 2021

Recently a traffic accident of heavy duty vehicles under the mandatory installation of ADAS (Advanced Driver Assistance System) is often reported in the media. Heavy duty vehicle accidents are normally occurring a high number of passenger's injury. According to report of Insurance Institute for Highway Safety, FCW (Forward Collision Warning) and AEB (Automatic Emergency Braking) were associated with a statistically significant 12% reduction in the rate of police-reportable crashes per vehicle miles traveled, and a significant 41% reduction in the rear-end crash rate of large trucks. Also many countries around the world, including Korea, are studying the effects of ADAS installation on accident reduction. Traffic accident statistics of passenger vehicle for business purpose in TMACS (Traffic safety information Management Complex System in Korea) tends to remarkably reduce the number of deaths due to the accident (2017(211), 2018(170), 2019(139)), but the number of traffic accidents (2017(8,939), 2018(9,181), 2019(10,095)) increases. In this paper, it is introduced a traffic accident case that could lead to high injury traffic accidents by being equipped with AEB in a bus. AEB reduces accidents and damage in general but malfunction of AEB could occur severe accident. Therefore, proper education is required to use AEB system, simply instead of focusing on developing and installing AEB to prevent traffic accidents. Traffic accident of AEB equipped vehicle may arise a new dispute between a driver's fault and vehicle defect. It is highly recommended to regulate an advanced event data recorder system.

• Journal of Advanced Navigation Technology
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• v.25 no.3
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• pp.248-255
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• 2021

The main causes of the July 2013 OZ 214 accident were poorly performed approach and the failure to recognize the autothrottle in the HOLD position which the automated speed control was not provided. The pilots late decision for go-around was also a critical factor leading to the accident. The B777 POM restricts the use of FLCH mode beyond the FAF. This research utilized the QAR data of an airline's B777 fleet in the period of two years where 44 cases were found. In many cases, the FLCH mode was used for rapid descent from an higher than normal situation. In addition, in the base turn, continuous use of FLCH mode even when the path was below the glide path were observed. Airports with elevation above 500 ft MSL had a higher rate of occurrence. In this research, the proper descent planning and vertical path monitoring, and the adherence to the limitation set in the manuals and the stabilized approach criteria were re-emphasized as mitigation to reduce event occurences.