• Journal of Advanced Navigation Technology
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• v.15 no.5
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• pp.879-886
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• 2011

Warning notification system base on mobile communication providers, is a warning information provider which senses the disaster and warning condition, provides the warning message to the entrepreneur and its mobile terminal. In this paper, for protecting our lives and properties, we study on disaster warning system ISO TC233's WG3's Public Warning model, Korea Disaster Forecasting and Warning System, disaster Forecasting and Warning System's role, and Colour-coded Alert etc.

• Journal of KIISE:Computing Practices and Letters
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• v.12 no.4
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• pp.229-240
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• 2006

The advanced Alarm System (AS) employs modem digital technology to implement the alarm functions of the NPP(Nuclear Power Plant). The use of modem digital technology can provide advanced alarm processing in which new algorithms such as a signal validation, advanced alarm processing logic and other features are applied to improve the control room man-machine interfaces. This paper will describe the design process of the AS of NPP, improving the system reliability and availability using the reliability prediction tool, design strategies regarding the human performance topics associated with a computer-based AS and the results of the performance analysis using a prototype of the AS.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2015.11a
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• pp.129-131
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• 2015

본 논문은 통합경보게이트웨이를 통하여 이기종 예 경보시스템들 간 상호 연계 및 재난 경보를 발령할 수 있는 통합경보시스템(Integrated Emergency Alert System)을 제안한다. 제안한 시스템은 재난 발령 인지를 담당하는 유관기관으로부터 재난 정보를 수집하고 이를 기존의 이기종 경보방송단말간의 연동을 위한 프로토콜로 변환하여 재난 상황 모델에 맞춰 경보 단말로 전달하는 기능을 가진다.

• The KIPS Transactions:PartC
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• v.13C no.3 s.106
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• pp.295-302
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• 2006

An intrusion detection system writes a lot of alarms against attack behaviors in real time. These alarms contain not only actual attack alarms, but also false alarms that are mistakes made by the intrusion detection system. False alarms are the main reason that reduces the efficiency of the intrusion detection system, and we propose framework for false alarms analysis in the paper. Also, we apply an incremental data mining method for pattern analysis of false alarms increasing continuously. The framework consists of GUI, DB Manager, Alert Preprocessor, and False Alarm Analyzer. We analyze the false alarms increasingly through the experiment of the proposed framework and show that false alarms are reduced by applying the analyzed false alarm rules in the intrusion detection system.

• Journal of Broadcast Engineering
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• v.20 no.4
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• pp.598-605
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• 2015

Effective alerts will drastically mitigate the disaster impacts. One way to enhance the effectiveness is to prepare multiple alert distribution channels. In this paper, we propose a new emergency alert distribution system that will solve the weaknesses of the current distribution systems, such as Cell Broadcasting System and T-DMB Automatic Emergency Alert Service. The weaknesses are: the limitation of message length, small portions of terminals that can receive and display the alert signal, and one-way communication service. To solve these problems, we propose an emergency alert distribution system over the Internet with RSS (Rich Site Summary) format. The system also has the capability of adaptive alert filtering according to the receiver characteristics. We analyzed the characteristics of RSS as an alerting format, and draw functional requirements satisfying use case scenarios. We designed the system only with major requirements and verified it on our test bed. Sending richer message contents through various receiving terminals, the system will achieve more effective emergency alert service.

• KIPS Transactions on Computer and Communication Systems
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• v.11 no.7
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• pp.217-224
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• 2022

Today, with the development of technology and industry, fire accidents in special buildings are increasing as special buildings increase. However, despite the rapid development of information and communication technology, human casualties are steadily occurring due to the underdeveloped and ineffective indoor fire alarm system. In this study, we confirmed that the existing indoor fire alarm system using acoustic alarm could not deliver a sufficiently large alarm to the in-room personnel. To improve this, we designed and implemented a fire alarm system using edge computing and beacons. The proposed improved fire alarm system consists of terminal sensor nodes, edge nodes, a user application, and a server. The terminal sensor nodes collect indoor environment data and send it to the edge node, and the edge node monitors whether a fire occurs through the transmitted sensor value. In addition, the edge node continuously generate beacon signals to collect information of smart devices with user applications installed within the signal range, store them in a server database, and send application push-type fire alarms to all in-room personnel based on the collected user information. As a result of conducting a signal valid range measurement experiment in a university building with dense lecture rooms, it was confirmed that device information was normally collected within the beacon signal range of the edge node and a fire alarm was quickly sent to specific users. Through this, it was confirmed that the "blind spot problem of the alarm" was solved by flexibly collecting information of visitors that changes time to time and sending the alarm to a smart device very adjacent to the people. In addition, through the analysis of the experimental results, a plan to effectively apply the proposed fire alarm system according to the characteristics of the indoor space was proposed.

• Proceedings of the Korean Information Science Society Conference
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• 2007.06c
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• pp.38-42
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• 2007

최근 원전 경보시스템은 운전원이 상황을 판단하는 데 불필요한 일시적인 경보나 결과 경보를 감축 및 억제하여 운전원의 주의가 특별히 필요한 경보에 집중하도록 하는 개량형 경보처리를 필요로 한다. 데이터베이스를 기반으로 원전 개량형 경보 시스템은 데이터베이스에 어떤 이벤트가 발생하면, 특정 공정을 검사해 조건이 맞는 경우 어떤 행동을 자동적으로 수행하여 경보처리를 수행할 필요가 있다. 또한 능동규칙의 사용으로 데이터베이스 상태 변화에 자동으로 대응하는 유용성을 확보해야 한다. 따라서 시간제한 개념을 가지는 데이터베이스 모델과 이를 바탕으로 한 능동 처리 기능을 가진 실시간 시스템을 구축하여 경보감축 및 억제를 수행할 수 있다. 본 논문은 원전의 개량형 경보처리를 위한 데이터베이스 설계 고려 사항들을 분석하여 실시간 능동 데이터베이스 기술을 도입하기 위한 분석을 수행한다. 그리고 능동 규칙을 이용한 개량형 경보처리 예와 구현 고려사항을 파악한 후 개발 계획을 정립한다.

• Proceedings of KOSOMES biannual meeting
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• 2003.11a
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• pp.105-108
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• 2003

A ultrasonic alert system is proposed in order to prevent the collision accidents of srmll ships. This system displays a lamp and a sound signal alerting collision by trrmsmitting ultrasonic pulse in air to detect ships and objects within fXJ m Under the condition of restricted visibility and compliazted works, it is expected to enh:uu:e the effect if navigators' lookout.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.303-304
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• 2022

본 논문에서는 재난위기경보관리시스템 구축을 위해 행정안전부가 구축중인 재난안전데이터 공유 플랫폼의 데이터를 연동하기 위한 기반 및 기술을 제안한다. 국가 R&D로 수행중인 재난위기경보관리시스템은 위기경보 수준을 판단하기 위해 필요한 데이터를 수집, 위기경보 수준 자동분석, 위기경보 수준 판단 및 표출하는 기능을 구현하였다. 그러나 실제 운영하기 위해서는 국가재난정보관리시스템(NDMS)내에서 운영할 수 있도록 재난안전데이터 공유 플랫폼의 데이터 연동을 위한 방안에 대해 연구하였다.

• Electric Engineers Magazine
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• v.222 no.2
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• pp.21-29
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• 2001

경보시스템에서 대다수의 출력 변환기는 전기 에너지를 음향 에너지로 전환시키지만 때때로 출력 변환기는 전기 신호를 광에너지로 전환시킬 것이다. 경보 시스템의 출력 음향 장치는 다음의 두기능중 하나 또는 모두를 행하기 위한 것이다.