• 전력전자학회논문지
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• 제8권4호
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• pp.359-365
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• 2003

본 논문은 산업용 네트워크 중 가장 많이 사용되는 네트워크 중 하나인 CAN를 사용하여 레미콘 생산설비 시스템에 온라인 자동화하는 방식을 제시하였다. 레미콘 생산설비에서 수분센서, 로드셀 센서 등에 대한 CAN 네트워크 인터페이스회로를 설계하였으며, 2개의 상태만 있는 리미트 스위치 및 램프 등을 효율적으로 네트워킹시키는 방식을 제시하였다. CAN 네트워크를 통하여 전체 레미콘생산 설비를 호스트 컴퓨터로 제어하면서 동작상태를 모니터링하고, 본 논문에 제시한 방법을 실제 레미론설비에 적용하여 타당성을 확인하였다.

• 대한임베디드공학회논문지
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• 제12권6호
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• pp.351-358
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• 2017

The most common communication interface for automotive electronic control devices is CAN (Controller Area Network). Sine CAN was first adopted to Daimler vehicles in 1991, all of automobile manufacturers use the CAN communication for in-vehicle networks. However, as the number of electronic control devices connected to the CAN network rapidly increases, the CAN protocol reaches the limit of technology. To overcome this limitation, Bosch introduced the new communication protocol, that is CAN-FD (Flexible Data-rate). In this paper, we analyze the characteristics and limitations of CAN-FD communication according to the topology under the in-vehicle wiring harness environment designed based on the existing classic CAN communication.

• 전기전자학회논문지
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• 제22권2호
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• pp.518-521
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• 2018

차량 내부의 다양한 전자장치를 연결하는 차량 내 통신(IVN: in-vehicle network)은 실시간성, 저잡음성, 고신뢰성, 고유연성 등이 필요하며 CAN(controller area network), CAN-FD(CAN flexible data rate), FlexRay, LIN(local interconnect network), SENT(single edge nibble transmission), PSI5(peripheral sensor interface 5) 등 다양한 기술이 있다. 본 논문에서는 이들 기술의 동작 원리에 대해 살펴보고 각 기술의 적용 대상과 장단점에 대해 설명한다.

• 한국자동차공학회논문집
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• 제19권4호
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• pp.54-63
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• 2011

An educational network system based on CAN protocol internal to a passenger ground vehicle has been developed. The developed network system has been applied to a commercial plug-in electrical vehicle and verified the educational applicability. To apply this in-vehicle network technology based on CAN, a suitable electric vehicle has been chosen and a CAN network structure has been designed, developed and manufactured. Since the commercial electric vehicle chosen as a test bed has its own proprietary electric network, we explain how the original electric network has been utilized and how the new network system has been designed. The developed network system on a real vehicle has been tested to show the applicability and the performance. Finally, the system has been applied at few classrooms to demonstrate how the in-vehicle network system works and to teach how to analyse the CAN signals. The developed system proven to be effective for educational purpose.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 심포지엄 논문집 정보 및 제어부문
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• pp.80-82
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• 2004

Personal robot consist of various modules that have independent functions. Because personal robot has requirement that support various construction for user's tendency. Therefore, Middleware mechanism at support not only personal robot's main functional element but also embedded modules functional elements is required. Each module have various heterogeneous network interfaces and variable services and variables. Therefore, Middleware must support these various network interfaces. This paper, pointed in Controller Area Network(CAN) inreface that usually used in embedded system for control. For connect various heterogeneous network interfaces (Ethernet, RS232 etc..), it is necessary to modify bagic CAN frame format. And also make some kind of BUS topology for CAN network.

• 경영과정보연구
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• 제2권
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• pp.335-354
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• 1998

In this study I construct CAN(Controller Area Network) for automobiles similar to LAN(Local Area Network) and build communication modules in the major part of an automobile to link several sub-systems. Since each station replaces the communication function of sub-systems and has various types of sensor, actuator, controller, and switch, every information about automobile's status is obtained from the network. The manufactured system showed a superior capability. The following is the contents of study. 1. The definition of communication packet through the analysis of CAN protocol. 2. The Design of modules using micro-controller 80C196CA. 3. The Network configuration.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 심포지엄 논문집 정보 및 제어부문
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• pp.255-257
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• 2006

This paper proposed a platform which includes both Network processor and DSP for flexible IED. The Network processor is one of the Intel's IXP4XX Product Line family and the DSP is one of the TI's C6000 family. An embedded Linux is ported in Network processor so that a DSP program can be downloaded to Network processor through ethernet and then downloaded to DSP. Using this method, various algorithms according to IED can be applied to the Network processor board. Maximum ten ADCs can be connected because there is a CPLD between DSP and ADC. That is, the network processor board which can measure maximum 40 channels is implemented. In DSP program, thread and double buffering methods are used not to miss voltage samples. The Network processor board is verified using a method that eight channel voltage signals converted to digital are transmitted to server through both DSP and IXP425.

• 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.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2005년도 ICCAS
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• pp.1586-1589
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• 2005

GUMF (Global User Management Framework) that is proposed in this research can be applied to next generation network such as BcN (Broadband convergence Network), it is QoS guaranteed security framework for user that can solve present Internet's security vulnerability. GUMF offers anonymity for user of service and use the user's real-name or ID for management of service and it is technology that can realize secure QoS. GUMF needs management framework, UMS (User Management System), VNC (Virtual Network Controller) etc. UMS consists of root UMS in country dimension and Local UMS in each site dimension. VNC is network security equipment including VPN, QoS and security functions etc., and it achieves the QoSS (Quality of Security Service) and CLS(Communication Level Switching) functions. GUMF can offer safety in bandwidth consumption attacks such as worm propagation and DoS/DDoS, IP spoofing attack, and current most attack such as abusing of private information because it can offer the different QoS guaranteed network according to user's grades. User's grades are divided by 4 levels from Level 0 to Level 3, and user's security service level is decided according to level of the private information. Level 3 users that offer bio-information can receive secure network service that privacy is guaranteed. Therefore, GUMF that is proposed in this research can offer profit model to ISP and NSP, and can be utilized by strategy for secure u-Korea realization.

• 한국정보통신학회논문지
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• 제17권8호
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• pp.1820-1826
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• 2013

산업현장에서 가장 많이 사용하고 있는 이기종 필드 센서 네트워크의 경우 센서간 통신은 CAN 통신 방식을 기반으로 버스형 구조로 설계되어 있다. 이러한 네트워크는 버스형 구조 특성상 거리 벡터 라우팅 프로토콜을 지원하고 있으며, 또한 이기종 네트워크를 지원할 경우 별도의 라우팅 테이블을 두어 변환하는 방식을 지원한다. 하지만 이러한 네트워크는 확장의 제한 및 늦은 전송처리속도 문제로 인해 네트워크 효율성 저하에 원인이 되고 있다. 그래서 본 논문에서는 네트워크의 확장성 및 높은 전송 처리속도를 보장하기 위한 새로운 CAN 라우팅 프로토콜을 제안한다. 제안하는 라우팅 프로토콜은 RIPv2 기반으로 설계되었으며, 거리 벡터 라우팅 프로토콜의 단점을 보안하기 위해 우선순위 부여 및 부가 기능을 부여할 수 있는 구간을 두는 방식을 지원하도록 설계하였다. 본 논문에서 제안하는 방식의 효율성 증가를 검증하기 위해 CAN 통신 기반으로 이기종 필드 센서 네트워크를 구축하여 데이터 전송률을 측정하였다.