• Journal of the Institute of Electronics Engineers of Korea SD
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• v.45 no.10
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• pp.31-38
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• 2008

This paper describes sensor network system implementation for the IEEE 1451.2 standard which guarantees compatibilities between various wired sensors. The proposed system consists of the Network Capable Application Processor(NCAP) in the IEEE 1451.0, the Transducer Independent Interface(TII) in the IEEE 1451.2, the Transducer Electronic Data Sheet(TEDS) and sensors. The research goal of this study is to minimize and optimize system complexity for IC design. The NCAP is implemented using C language in personal computer environment. TII is used in the parallel port between PC and an FPGA application board. Transducer is implemented using Verilog on the FPGA application board. We verified the proposed system architecture based on the standards.

• Proceedings of the KIEE Conference
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• 2006.07a
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• pp.254-255
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• 2006

최근의 전력시스템 분야에서는 IT기술의 혁신적인 발전과 향후 전개될 유비쿼터스 네트워크 사회에서의 전력시스템 분야의 역할 및 발전 방향에 대한 많은 의견이 있었다. 이러한 노력은 IT기술과 유비쿼터스 네트워크 기술을 전력분야에 적용하여 지능화된 전력네트워크 감시 및 제어시스템을 구현하는 방향으로 전개되고 있다. 전력시스템을 구성하는 주요 시설물을 감시하고 유지하기 위한 방안으로 센서 및 센서네트워크의 구현을 통한 지능형 감시 체계를 구현하는 방법이 논의되고 있다. 전력계통시스템을 감시하기 위하여 사용되는 각종 센서 및 액츄에이터에서 계측된 데이터를 규격화하는 방법을 규정한 IEEE 1451 과 디지털변전소의 통신을 위한 프로토콜로 여겨지는 IEC 61850 규격은 전력설비내의 센서 및 센서네트워크를 구성하는 주요 프로토콜로서 프로토콜간의 상호 연계 및 변환 기술의 개발은 네트워크 시스템의 운용 성능에 직결된다. 그러므로 IEEE 1451과 IEC 61850의 연구를 통하여 최적의 지능형 전력네트워크 구현하기 위한 변환기술이 필요하다.

• Journal of Institute of Control, Robotics and Systems
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• v.15 no.7
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• pp.753-759
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• 2009

As many systems depend on electronics in an intelligent vehicle, concern for fault tolerance is growing rapidly. For example, a car with its braking controlled by electronics and no mechanical linkage from brake pedal to calipers of front tires(brake-by-wire system) should be fault tolerant because a failure can come without any warning and its effect is devastating. In general, fault tolerance is usually designed by placing redundant components that duplicate the functions of the original module. In this way a fault can be isolated, and safe operation is guaranteed by replacing the faulty module with its redundant and normal module within a predefined interval. In order to make in-vehicle network fault tolerant, this paper presents the concept and design methodology of an IEEE 1451 based dual CAN module. In addition, feasibility of the dual CAN network was evaluated by implementing the dual CAN module.

• Journal of the Korean Society for Precision Engineering
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• v.28 no.4
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• pp.436-445
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• 2011

As automation systems become intelligent and autonomous for productibility, industrial networks (fieldbuses) and network-based devices are essential components of intelligent manufacturing systems. However, there are obstacles for the wide acceptance of the network-based devices such as smart sensor and network-based actuator. First, there exist numerous fieldbus protocols that a network-based device should be able to support. Second, the whole network-based device has to be replaced when only the sensor of the module fails. In order to overcome these obstacles, a smart sensor/actuator is implemented as two units; one responsible for network communication and the other for sensor/actuator operations using IEEE 1451.0 standard. This paper presents a structure of the 1451.0-based smart sensor with multiple connectivity function designed by CANopen.

• Journal of the Korean Society for Precision Engineering
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• v.28 no.2
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• pp.176-184
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• 2011

As modern megalopolises become more complex and huge, convenience and safety of citizens are main components for a welfare state. In order to make safe society, telemetrics technology, which remotely measures the information of target system using electronic devices, is an essential component. In general, telemetrics technology consists of USN (ubiquitous sensor network) based on a wireless network, smart sensor, and SoC (system on chip). In the smart sensor technology, the following two problems should be overcome. Firstly, because it is very difficult for transducer manufacturers to develop smart sensors that support all the existing network protocols, the smart sensor must be independent of the type of networking protocols. Secondly, smart sensors should be modular so that a faulty sensor element can be replaced without replacing healthy communication element. To solve these problems, this paper investigates the feasibility of an IEEE 1451 based ZigBee smart sensor system. More specifically, a smart sensor for large network coverage has been developed using ZigBee for active telemetrics.

• Journal of the Korea Society of Computer and Information
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• v.16 no.9
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• pp.45-55
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• 2011

Context awareness technologies are based on efficient sharing of environment information of ubiquitous sensors in everyday life, and users require this awareness technologies to get quality of services. However, the application has been restricted due to its varieties of sensors and many different methods of communications. Therefore, IEEE 1451 standard has been published to interface between sensors and network layer. But it does not connect to a middleware because IEEE 1451 is for transducer standards. This paper presents a transducer and application interface protocol which connect to the context-aware middleware by defining a protocol to obtain context information using XML. We have implemented a bridge health monitoring system and railroad monitoring system in which different sensors and users' application are used to prove the efficacy of proposed interface protocols.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2006.07a
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• pp.292-292
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• 2006

• Review of KIISC
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• v.16 no.6
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• pp.64-73
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• 2006

USN(Ubiquitous Sensor Network) 기술은 유비쿼터스 사회의 기반이 되는 중요한 기술 중의 하나로 USN 기술을 통해 산업 구조와 시장 구조에 전반적인 큰 변화를 가져올 것으로 예상된다. 본 고에서는 중요성 점증되고 있는 IP-USN 관련하여 표준화 현황으로서 IEEE 1451 워킹그룹, IEEE 802.15 워킹 그룹, ZigBee Alliance 및 IETF 6LoWPAN 워킹 그룹에서 추진 중인 내용에 대하여 고찰한다 또한 관련 기술 및 IP-USN에서 요구되어지는 보안기술에 대해서 고찰한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.05a
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• pp.94-96
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• 2022

Plug & Play techniques have been proposed in various ways to overcome the complexity of sensors/drivers in IoT application development. IEEE1451 standard abstracts sensors/drivers into a data structure called TEDS. As a result, characteristics of the sensor/driver are unnecessary when connecting the sensor/driver to the host device. The method proposed by ETRI is a format in which device drivers of sensors/drivers are dynamically loaded and connected to hosts, and there is no particular abstraction data structure. Both schemes are located at both ends in terms of the abstraction unit of the sensor/driver. We present the problem based on this fact, and what optimized methods can exist in the middle of it. In this paper, we analyze existing Plug&Play techniques. Also, we specify abstraction units of sensors/drivers, and analyze them.

• Journal of Sensor Science and Technology
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• v.18 no.6
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• pp.409-416
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• 2009

A lot of valuable-piece of information are acquisited through ubiquitous sensor network(USN) system composed of man-made sensors. The telemetry system used for communicating to access informations between nature and human-beings monitors and estimates the status of infrastructure, utilities and natural environments to prevent hidden disasters, improving quality of life and productivity in multi-directional views. That would be the reason of USN subsistence. This paper will be a review on how to build long-term USN system. Therefore, this paper focuses on reviewing the sensor interface and the sensor network interface and its significance as the foundation stone for varying USN service profiles and showing its development example, and finally proposing a few of things to set up future-oriented USN open system.