• Title/Summary/Keyword: TCS System

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Quality characteristics of beef in thermoelectric cooling system combined with plasma during storage (열전소자 장치 및 플라즈마 처리에 의한 소고기 저장 중 품질특성)

  • Kwon, Ki-Hyun;Sung, Jung-Min;Kim, Ji-Young;Kim, Byeong-Sam;Kim, So-Hee
    • Food Science and Preservation
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    • v.24 no.1
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    • pp.52-59
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    • 2017
  • This study was performed in order to examine the effect of a thermoelectric cooling system combined with plasma on beef. Beef was studied in a box with a thermoelectric cooling system and plasma generation apparatus (TCS-1), a box with thermoelectric cooling system (TCS-2) and a polystyrene box (control). A temperature inside the thermoelectric cooling system was kept below $2^{\circ}C$, and volatile basic nitrogen (VBN) values of TCS-1 and TCS-2 were 7.72 mg% and 9.20 mg%, respectively. The thiobarbituric acid (TBA) value (0.52 mgMA/kg) of TCS-1 was significantly lower than that (0.91 mgMA/kg) of TCS-2. For volatile basic nitrogen (VBN) value, TCS-1 maintained freshness compared to TCS-2, since the freshness of TCS-1 value (6.98-9.77 mg%) was less than that of TCS-2 (6.98-11.45 mg%) during storage. The microbial counts of TCS-1 and TCS-2 were 4.62 log CFU/g and 7.09 log CFU/g, respectively, on the $7^{th}$ day, which were lower than that (8.45 log CFU/g) of control on the $3^{rd}$ day. Sensory evaluation of TCS-1 showed the highest scores for appearance, color, juiciness, and overall acceptability than the others. In conclusion, TCS-1 was effective for maintaining freshness of beef during storage.

The Advantage of renovation from Track Circuit Based Train Control to Communication Based Train Control (궤도회로기반 시스템에서 통신기반 시스템으로의 개량사업에 대한 장점)

  • Min, Jun-Sung;Lee, Jin-Haeng;Kang, Lee-Teag;Yoo, Young-Jun
    • Proceedings of the KSR Conference
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    • 2008.11b
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    • pp.1327-1332
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    • 2008
  • Nowadays, the technology development of communication and system engineering should impact on the Train Control System(TCS). The one of main developments in TCS is the Communication Based Train Control(CBTC), which does not depend on the track circuit. Currently, there are the project to modernize TCS as CBTC system from the track circuit system around the world. In Korea, there are the new CBTC system revenue projects such as Busan-Gimhae LRT, Sin-Bundang Line, and so on. There is also Government project called Maglev Line in Daejeon, which is applied CBTC system. Through the examples of world TCS renovation, it is expected to modernize the track circuit TCS system as CBTC system in Korea. Therefore, we would express the advantage of developing from the traditional TCS system to CBTC TCS system.

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Integrated Railway Signaling Systems for Laboratory Testing of Next-generation High-speed Train (한국형 고속전철용 신호시스템의 실험실 시험을 위한 통합 신호시스템)

  • Hwang, Jong-Gyu;Lee, Jong-Woo;Park, Yong-Jin
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.53 no.1
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    • pp.32-39
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    • 2004
  • Railway signaling systems consist of several vital computerized equipment such as CTC(Centralized Traffic Control), EIS(Electronic Interlocking System), ATC(Automatic Train Control) and so on. Currently, the project for development of railway signaling systems for the next-generation high-speed train is progressed according to the G7 project and railway signaling related several companies and research institute are joined this project consortium. The railway signaling systems, being developed in this project, called as a kTCS(Korean Train Control System), is composed of kTCS-CTC, kTCS-IXL, kTCS-ATC and etc. kTCS signaling systems have to be operated at the laboratory testing level as integrated signaling systems by interface between each railway signaling systems before railway field installation and revenue service. To solve this matter, communication protocols between each signaling equipment are designed and message codes for each defined protocols have defined. And also several equipment has developed for the railway integrated signaling systems for laboratory testing. We has plentifully tested and verified the designed protocols and the characteristics of integrated railway signaling systems with our developed each kTCS signaling equipment and communication protocols. In this paper, the integrated kTCS system including communication protocols is presented.

DEVELOPMENT OF A TELESCOPE CONTROL SYSTEM, MS-TCS (중소형 망원경 제어 시스템 MS-TCS 개발)

  • HAN INWOO;NAM UK-WON
    • Publications of The Korean Astronomical Society
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    • v.13 no.1 s.14
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    • pp.85-98
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    • 1998
  • In this paper we describe MS-TCS, the telescope control system which was developed in Korea Astronomy Observatory. MS-TCS can control an equatorial type telescope equipped with stepping motors and incremental type optical encoders. MS-TCS consists of (1) POINT_TEL which is the program roning in a PC and (2) TCS-196 which is the electroics board to control the telescope. The communication between the PC and TCS-l96 is done through RS-232 or RS-422 serial line. MS-TCS can control the secondary mirror and dome. It also provide network function using TCP/IP for remote control of the telescope. MS-TCS is suitable for controlling medium to small size telescope for research and education.

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A Study on the development strategy for TCS in technology context (기술발전 추이에 따른 열차제어장치의 개발방향)

  • Lee, Jae-Ho;Shin, Duck-O;Lee, Kang-Mi;Hong, Hyo-Sik
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.642-646
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    • 2008
  • Signaling system, for which ensuring safe train operation, must be a fail-safe system with higher reliability and safety. TCS has made significant improvements both on signaling system, from relay based ground signaling system to computer based on-board system, and on driving mode, form low speed and low density driving to TCS supporting high speed and high density driving. In addition, TCS has been applied to rolling stock with a wide variety of context according to the characteristics of rolling stock or railway infrastructure. In this paper, therefore, we confirmed the basic concept of ATC system and analyzed its development process in technology context via referencing international cases and ATC systems introduced and applied in Korea. Based on those analyses, we suggested the new TCS development strategy for its suitable application to high speed line, conventional line and metro, and we also provided technical considerations related to TCS application.

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Construction of Integrated Signalling System for Next-generation High-Speed Train (한국형 고속전철용 신호시스템 시제품의 시험을 위한 통합신호시스템 구축)

  • Hwang, Jong-Gyu;Shin, Duck-Ho;Joung, Eui-Jin;Lee, Jong-Woo
    • Proceedings of the KIEE Conference
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    • 2002.07b
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    • pp.1220-1222
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    • 2002
  • The railway signaling system consists of several vital computerized equipments. Now the project for development of signaling system for the next-generation high-speed train is progressed according to the consortium. The developing signaling system by this project, kTCS(Korean Train Control System), is composed of kTCS-CTC, kTCS-IXL, kTCS-ATC and etc. The KTCS signaling has to be operated as a integrated system by interface between each signaling. To achieve these, communication protocols between each signaling have to be designed and message codes are defined. In this paper the configuration of integrated kTCS system and designed communication protocol is presented.

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Design and Construction of Integrated Signalling System for Next-generation High-Speed Train (한국형 고속전철용 통합 신호시스템의 설계 및 구축)

  • 황종규;이종우;조용기;류호중
    • Proceedings of the KSR Conference
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    • 2002.05a
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    • pp.467-472
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    • 2002
  • The railway signal ing system consists of several vital computerized equipments. Now the project for development of signal ing system for the next-general ion high-speed train is progressed according to the consortium. The developing signal ing system by this project, kTCS(Korean Train Control System), is composed of kTCS-CTC, kTCS-IXL, kTCS-ATC and etc. The KTCS signaling has to be operated as a integrated system by interface between each signaling. To achieve these, communicat ion protocols between each signal ing have to be designed and message codes are defined. In this paper the configuration of integrated kTCS system and designed communication protocol is presented.

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Vehicle Traction Control System using Fuzzy Logic Theory (퍼지논리를 이용한 차량 구동력 제어 시스템)

  • 서영덕;여문수;이승종
    • Transactions of the Korean Society of Automotive Engineers
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    • v.6 no.5
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    • pp.138-145
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    • 1998
  • Recently, TCS(Traction Control System) is attracting attention, because it maintains traction ability and steerability of vehicles on low-$\mu$ surface roads by controlling the slip rate between tire and road surface. The development of TCS control law is difficult due to the highly nonlinearity and uncertainty involved in TCS. A fuzzy logic approach is appealing for TCS. In this paper, fuzzy logic controller for TCS is introduced and evaluated by the computer simulation with 8 DOF vehicle model. The result indicate that the fuzzy logic TCS improves vehicle's stability and steerability.

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Investigation of Radio Communications-based Train Control System with Interoperability (무선통신기반 열차제어시스템 상호운영성 연구)

  • Choi, June-Young;Park, Jae-Young
    • Journal of the Korean Society for Railway
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    • v.17 no.1
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    • pp.35-42
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    • 2014
  • This paper analyzes the hazard related to train control, the functional requirements for atrain control system(TCS) and the automatic train protection(ATP) functional allocation that ensures the interoperability of a radio communications-based TCS. In addition, the interoperability can be obtained using wireless communications technology standards and standardized functional allocations of TCS performed on the wayside and onboard. Using this information, an integrated operating system for a rail network can be constructed. The functional allocations of TCS that support interoperability, require hazard analysis of TCS and definition of the system requirements. The hazard factors for a TCS are confirmed through setting the train safety space control and train speed limit excess. Furthermore, this paper determines the impact of the hazard factors on the TCS and, defines the functional requirements for the TCS subsystems and the ATP wayside and onboard functional allocations.

Design of an Interface System IC for Automobile ABS/TCS (자동차용 ABS/TCS 인터페이스 시스템 IC의 설계)

  • Lee, Sung-Pil;Kim, Chan
    • Journal of the Institute of Convergence Signal Processing
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    • v.7 no.4
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    • pp.195-200
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    • 2006
  • The conventional discrete circuit for ABS/TCS system was examined and the problems of the system were analyzed by computer simulation. In order to improve the performance of ABS/TCS system, interface IC which has error compensation, comparator and under voltage lock-out circuit was designed and their electrical characteristics were investigated. The voltage regulator was included to compensate the temperature variation in the temperature range from $-20^{\circ}C$ to $120^{\circ}C$ for automobile environment. ABS and brake signal were separated using the duty factor of same frequency or different frequencies. UVLO(Under Voltage Lock-Out) circuit and constant current circuit were applied for the elimination of noise, and protection circuit was applied to cut the excess current off. Layout for IC fabrication was designed to enhance the electrical performance of ABS/TCS system. Layout was consisted of 11 masks, arrayed effectively 8 pads to reduce the current loss. We can see that the result of layout simulation was better than the result of bread board.

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