• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2001년도 춘계학술대회 발표논문집
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• pp.195-198
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• 2001

본 논문에서는 최근 그 응용이 증가하고 있는 CAN통신 프로토콜을 이용하여 차량내 network개념을 도입하여 차내 각종 전기신호와 센서 입출력을 제어하는 통합 시스템의 개발에 관한 것을 간략히 기술한다. CAN시스템은 최대 1Mbps의 전송 비트율과 에러검출 및 에러영향의 시스템 내로의 한정 등의 기능이 뛰어난 높은 레벨의 통신 안정성을 가지면서 분산 실시간 제어를 효율적으로 지원하는 serial bus communication프로토콜의 하나이다. 본 연구에서 개발된 시스템은 4개의 독립 제어시스템과 관련 소프트웨어로 구성되어 있으며. 각각의 제어시스템간의 정보의 교환은 CAN통신 프로토콜에 안정적으로 이루어지며 자동차의 고급화와 함께 향후 실용화가 기대된다.

• 한국컴퓨터정보학회논문지
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• 제28권12호
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• pp.105-114
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• 2023

본 논문은 모바일 IAB를 향한 UxNB 네트워크 배포 및 운영 방안을 제안한다. SDN(Software Defined Network) 기반으로 UxNB 네트워크를 운영하여, 이동 통신 서비스를 원하는 지역에 UxNB를 배포한다. 서비스 지역에 UxNB를 배포한 후, IAB를 설정하여 이동 통신 서비스를 수행할 수 있다. 이를 위해 본 논문에서는 먼저 UAV 컨트롤러(UAV controller)와 SDN 컨트롤러(SDN controller)로 구성되는 UxNB 네트워크 컨트롤러(UxNB NC; UxNB network controller)를 제안하고 필요한 기능들을 기술한다. 다음으로 UxNB 네트워크를 배포하고 운영할 수 있는 시나리오를 단계별로 상세하게 제시한다. 또한 UxNB 네트워크 컨트롤러의 위치, UxNB에 대한 UAV 컨트롤러 제어 명령 전달 방법, UxNB 네트워크를 위한 IAB 적용 방법, UxNB 네트워크의 최적화, UxNB 네트워크의 RLF(radio link failure) 복구 및 UxNB 네트워크의 보안(security)에 대한 향후 연구를 논한다. 제안한 UxNB NC 아키텍처와 UxNB 네트워크 배포 및 운영 방안을 이용하여 모바일 IAB에 UxNB 네트워크를 원활하게 통합할 수 있을 것으로 기대한다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.34-34
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• 2000

One of the basic goals, when considering networks for communication in industrial control applications, is the reduction of complexity of related wiring harnesses. In addition, the networking offers the advantages for industrial control applications, such as ease of cabling, ease of changes in the cabling, ease of adding controller modules, etc. CAN (Controller Area Network) is generally applied in car networking in order to reduce the complexity of the related wiring harnesses. These traditional CAN application techniques are modified to achieve the real time communication for the industrial control applications. In this paper, we propose the method of CAN Identifier assignment for Real-Time network system. This method is can be used to scheduling messages on CAN for Real-Time network system. And also, the real-time network system is developed and the proposed moth(Ids are verified experimentally.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 ITC-CSCC -2
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• pp.600-603
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• 2000

In this paper, we propose the design method of distributed control system using Controller Area Network (CAN). CAN is an advanced serial communication protocol for distributed real-time control systems. It is a contention-based multi-master network whose timeliness properties come from its collision resolution algorithm which gives a high schedulable utilization and guaranteed bus access latency. With proposed method using CAN, we apply to robot controller. The effectiveness of proposed method is demonstrated by the simulation and experiment.

• 한국통신학회논문지
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• 제42권4호
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• pp.892-898
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• 2017

본 논문은 차량 내 AVN(Audio Video Navigation)에서 차량정보 분석과 제스처 인식이 가능한 소프트웨어 구조를 설계하고 구현 방법을 서술한다. 설계된 소프트웨어는 차량정보 분석을 위해 CAN(Controller Area Network) 통신 데이터 분석 모듈을 구현하여 차량의 주행 상태를 분석했다. AVN 소프트웨어는 분석된 정보를 웨어러블 디바이스의 제스처 정보와 융합토록 했다. 도출된 융합정보는 운전자의 명령 수행 단계로 매칭하고 서비스를 지원하는데 사용됐다. 설계된 AVN 소프트웨어는 기성 제품과 유사한 환경의 HW 플랫폼 상에 구현되어 차량 주행 상황과 동일하게 모사된 상황에서의 차량정보분석, 제스처 인식 수행 등의 기능을 지원함을 확인했다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2000년도 추계학술대회 논문집
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• pp.717-720
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• 2000

Event-driven communication protocols such as CAN(Controller Area Network) have inherent packet delays due to the contention process for the use of network medium. These delays are stochastic in nature because most packets arrive at random time instants. The stochastic property of the delay adversely influences the control system's performance in terms of stability, responsiveness and steady-state error. Another problem for safety-critical application such as brake-by-wire systems is the reliability of the communication modules that can fail abruptly. This paper deals with two methods to overcome the above problems : (i) scheduling method that can maintain packet delays under some acceptable level, and (ii) redundancy management of communication modules that prescribes dual-redundancy modules' behavior when one of them fails.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권10호
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• pp.5098-5115
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• 2017

A number of automotive electronics-safety, driver assistance, and infotainment devices-have been deployed in recent vehicles. This raises new challenges regarding in-vehicular network arbitration. A performance analysis of non-destructive arbitration has revealed a fairness issue. The arbitration prioritizes without collisions, despite multiple simultaneous transmissions; however, the performances of the highest priority node and the lowest priority node are very different. In this paper, an ID-rotation arbitration method to solve the arbitration-fairness problem is proposed. The proposed algorithm was applied to several engine control units (ECUs), including a controller area network (CAN) controller. Experimental results showed that the algorithm improved the fairness as well as the total throughput within a specific performance constraint.

• 디지털산업정보학회논문지
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• 제8권1호
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• pp.9-15
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• 2012

Multiple convenience features have been getting installed in recently released cars. However, the control of them has many uncomfortable matters yet. To resolve them, it is needed to study how to use easier the convenience features and control them remotely. Currently, wide range of convergence services are being released in various industries by using smartphone and smartphones with its state-of-the-art functions also are being released. In this paper, we design and implement smartphone-based applications for controling the vehicle's convenience features to control the vehicle convenience features with smartphone. To do this, we configure CAN (Controller Area Network) communication between the vehicle's various convenience features, and establish MCU (Micro Controller Unit) to control each feature. We also connect between the MCU and smartphones to make them available for the remote control. We can control lights, turn signals, audio, windows, air conditioner, and so on with the implemented smartphone-based control service of vehicle's convenience features using CAN remotely.

• 한국정밀공학회지
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• 제23권9호
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• pp.7-14
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• 2006

• 전기학회논문지
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• 제61권6호
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• pp.838-844
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• 2012

This paper proposes the effective monitoring method for marine engine system, which is implemented based upon Controller Area Network (CAN). As the marine engine monitoring system requires various kind of information, a lot of sensor nodes are distributed to several places. The CAN supports huge numbers of message IDs for the sensor nodes and provides a stable communication channel in a wide area such as a 12,000 TEU container ship. Since the CAN is priority-based communication system, some of hard real-time messages like alarm messages which are time-critical to the operation of the vessel cannot be communicated within the dead-time. Therefore it is desirable to distinguish the bandwidth of the CAN for static state messages and transition-state messages not to be harmful to the engine operations. Using the features of message arbitration ability of the CAN, it is proposed in this paper that the bandwidth allocation is dynamically adjusted to cope with the increment of input signal to improve the performance of monitoring system. Effectiveness and validity of the proposed scheme have been demonstrated through real experiments.