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권용진(Kwon Yong-Jin),신덕호(Shin Duck-Ho),유광균(Ryu Kwang-Kyun),이기서(Lee Key-Soe) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper show Device Driver for RTOS-FT Systems. In this paper, a definition of Device Driver is introduced which is used in RTOS-FT Systems. The structure of Device Driver is briefly divided into physical layer and logical layer. The specific characteristic of physical field and logical field which is discussed in this paper is suggested for the system which is satisfied with fault-tolerant theory.
강민수(Kang Min-Soo),이정석(Lee Jung-Suk),김현기(Kim Hyun-Key),유광균(Ryu Kwang-Kyun),이기서(Lee Key-Seo) 한국철도학회 2000 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper proposes the failsafe control logic which has applied to the voting on the TMR system by using FPGA. The self-detection circuit is also designed for detecting a characteristic of fault at TMR system. The fault producing in the self-detection system is largely classified among an intermittent fault, a transient fault and a permanent fault. If it is happened to the permanent fault, the system can be failed. Therefore, it is designed the logic circuit which is not transferred the permanent fault to the system after shut off output. The control logic of the Fail Safe proposed in the paper is required for a circuit integrate of device to minimize the failure happened. Therefore, it makes to design FPGA with modeling of VHDL. The circuit of the Fail Safe of TMR system is able to apply to nuclear system, rail-way system, aerospace and aircraft system which is required for high reliability.
강민수(Kang Min-Soo),김윤집(Kim Yun-Jib),이정석(Lee Jung-Suk),이동선(Lee Dong-Sun),유광균(Ryu Kwang-Kyun),이기서(Lee Key-Seo) 한국철도학회 2001 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper proposes the system to describe the data transmission methods using the simply frequency transmission methods between a railway track and the train. This system can control the railway signals through the ABS or ATS system located in the train and stations, having the frequency about 433.92 MHz. It shows the advanced system to send a lot of data through the microprocessor installed in a transmitter and transmitter-receiver at the train and railway.