7 research outputs found

    A Redundancy of Servers and Networks for Reliability Improvement of a Monitoring and Control System

    Get PDF
    Recently, together with development of communications technology, monitoring and control systems have been used in many fields. When monitoring and control systems are developed, one of important things is considered about a redundancy so that the system can be operated normally whenever hardware faults are occurred partly. In this paper, we introduce a monitoring and control system with a redundancy function for servers and networks. The system, therefore, has an active server and standby server. Each server also has 3 communication ports, and 2 ports are connected to all field units and 1 port is connected to another server. In fields, all field units have to be constructed 2 communication ports connected each server through communication lines. Also, each server's communication program is implemented by analyzing and handling fault elements, and is modularized for linking easily with a monitoring and control module. An experiment with 2 servers and 2 field units is constructed to demonstrate its effectiveness.λͺ©μ°¨ Abstract 제1μž₯ μ„œλ‘  = 1 제2μž₯ κ°μ‹œμ œμ–΄ μ‹œμŠ€ν…œ = 4 2.1 κ°μ‹œμ œμ–΄ μ‹œμŠ€ν…œμ˜ κ°œμš” = 4 2.2 κΈ°μ‘΄ κ°μ‹œμ œμ–΄ μ‹œμŠ€ν…œμ˜ ꡬ쑰 = 5 2.3 κΈ°μ‘΄ κ°μ‹œμ œμ–΄ μ‹œμŠ€ν…œμ˜ ꡬ쑰의 κ°œμ„ μ  = 7 제3μž₯ μ œμ•ˆν•˜λŠ” κ°μ‹œμ œμ–΄ μ‹œμŠ€ν…œμ˜ 이쀑화 ꡬ쑰 = 9 3.1 κ°μ‹œμ œμ–΄ μ‹œμŠ€ν…œμ˜ ν•˜λ“œμ›¨μ–΄ 이쀑화 = 9 3.2 였λ₯˜ νŒλ‹¨κ³Ό 처리 = 10 3.3 κ°μ‹œμ œμ–΄ μ‹œμŠ€ν…œμ˜ λͺ¨λ“ˆν™” = 14 제4μž₯ 톡신 λͺ¨λ“ˆμ˜ κ΅¬ν˜„ = 16 4.1 λ©”λͺ¨λ¦¬ 관리 = 16 4.2 데이터 관리 λͺ¨λ“ˆ = 19 4.3 μž₯λΉ„ 접속 λͺ¨λ“ˆ = 21 4.3.1 접속 관리 μ“°λ ˆλ“œ = 23 4.3.2 οΌŸοΌŸμ΄ν„° μˆ˜μ§‘ μ“°λ ˆλ“œ = 28 4.4 μ„œλ²„ μƒνƒœ 관리 λͺ¨λ“ˆ = 29 4.4.1 ν™œμ„±μ„œλ²„μ˜ μ„œλ²„ μƒνƒœ 관리 λͺ¨λ“ˆ = 32 4.4.2 λŒ€κΈ°μ„œλ²„μ˜ μ„œλ²„μƒνƒœ 관리 λͺ¨λ“ˆ = 34 4.5 데이터 μ €μž₯ λͺ¨λ“ˆ = 36 제5μž₯ μ‹€ν—˜ 및 κ³ μ°° = 38 제6μž₯ κ²°λ‘  = 44 μ°Έκ³ λ¬Έν—Œ = 4

    μΆ”μƒν‘œν˜„μ£Όμ˜ 미술의 이데올둜기적 νŠΉμ„±μ— κ΄€ν•œ 연ꡬ

    No full text
    ν•™μœ„λ…Όλ¬Έ(석사)--μ„œμšΈλŒ€ν•™κ΅ λŒ€ν•™μ› :μ„œμ–‘ν™”κ³Ό λ―Έμˆ μ΄λ‘ μ „κ³΅,1999.Maste
    corecore