|
Train Communication Network
The train communication network (TCN) is a hierarchical combination of two fieldbus networks for data transmission within trains. It consists of the Multifunction Vehicle Bus (MVB) inside each vehicle and of the Wire Train Bus (WTB) to connect the different vehicles. The TCN components have been standardized in IEC 61375. Multifunction vehicle bus (MVB) The MVB connects individual nodes within a vehicle or closed train set. Unlike the WTB, there is no single connector standard for the MVB – instead, there are 3 defined media and connector classes: * OGF ( Optical Glass Fibre) uses 240 micron fiber up to 2000 m * EMD (Electrical Medium Distance) uses shielded twisted pair with RS-485 transmitters and transformers for galvanic isolation, up to 200 m * ESD (Electrical Short Distance) uses simple backplane wiring without galvanic isolation, up to 20 m The plugs and sockets are the same as used by Profibus, with 2 x DE-9 sockets per device. For OGF, the media s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brown, Boveri & Cie
Brown, Boveri & Cie. (Brown, Boveri & Company; BBC) was a Swiss group of electrical engineering companies. It was founded in Baden bei Zürich, in 1891 by Charles Eugene Lancelot Brown and Walter Boveri who worked at the Maschinenfabrik Oerlikon. In 1988 BBC merged with ASEA to form ABB. Early history of BBC Brown Boveri BBC Brown Boveri was established in 1891. The company was one of only a few multinational corporations to operate subsidiaries that were larger than the parent company. Because of the limitations of the Swiss domestic market, Brown Boveri established subsidiaries throughout Europe relatively early in its history, and at times had difficulty maintaining managerial control over some of its larger operating units. The merger with ASEA, a company which was praised for its strong management, was expected to help Brown Boveri reorganize and reassert control over its vast international network. Activity in Britain Brown Boveri's early activities included manufac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Layer
In the seven-layer OSI model of computer networking, the physical layer or layer 1 is the first and lowest layer: the layer most closely associated with the physical connection between devices. The physical layer provides an electrical, mechanical, and procedural interface to the transmission medium. The shapes and properties of the electrical connectors, the frequencies to transmit on, the line code to use and similar low-level parameters, are specified by the physical layer. At the electrical layer, the physical layer is commonly implemented in a dedicated PHY chip or, in electronic design automation (EDA), by a design block. In mobile computing, the MIPI Alliance *-PHY family of interconnect protocols are widely used. Role The physical layer defines the means of transmitting a stream of raw bits over a physical data link connecting network nodes. The bitstream may be grouped into code words or symbols and converted to a physical signal that is transmitted over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEC 61158
A fieldbus is a member of a family of industrial digital communication networks used for real-time distributed control. Fieldbus profiles are standardized by the International Electrotechnical Commission (IEC) as IEC 61784/61158. A complex automated industrial system is typically structured in hierarchical levels as a distributed control system (DCS). In this hierarchy the upper levels for production managements are linked to the direct control level of programmable logic controllers (PLC) via a non-time-critical communications system (e.g. Ethernet). The fieldbus links the PLCs of the direct control level to the components in the plant of the field level such as sensors, actuators, electric motors, console lights, switches, valves and contactors and replaces the direct connections via current loops or digital I/O signals. The requirement for a fieldbus are therefore time-critical and cost sensitive. Since the new millennium a number of fieldbuses based on Real-time Ethernet have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethernet
Ethernet ( ) is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1983 as IEEE 802.3. Ethernet has since been refined to support higher bit rates, a greater number of nodes, and longer link distances, but retains much backward compatibility. Over time, Ethernet has largely replaced competing wired LAN technologies such as Token Ring, FDDI and ARCNET. The original 10BASE5 Ethernet uses a thick coaxial cable as a shared medium. This was largely superseded by 10BASE2, which used a thinner and more flexible cable that was both less expensive and easier to use. More modern Ethernet variants use Ethernet over twisted pair, twisted pair and fiber optic links in conjunction with Network switch, switches. Over the course of its history, Ethernet data transfer rates have been increased from the original to the lates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
WorldFIP
The Factory Instrumentation Protocol or FIP is a standardized field bus protocol. Its most current definition can be found in the European Standard EN50170. History The FIP standard is based on a French initiative in 1982 to create a requirements analysis for a future field bus standard. The study led to the European Eureka initiative for a field bus standard in June 1986 that included 13 partners. The development group (réseaux locaux industriels) created the first proposal to be standardized in France. The name of the FIP field bus was originally given as an abbreviation of the French "Flux d'Information vers le Processus" while later referring to FIP with the English name "Factory Instrumentation Protocol" (some references also use the hybrid "Flux Information Protocol"). Based on the requirements study other manufacturers created similar protocol definitions - starting in 1990 a number of partners from Japan and America merged with FIP to the WorldFIP standardization group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NFC 46602
NFC usually refers to: * Near-field communication, a set of communication protocols for electronic devices * National Football Conference, part of US National Football League NFC may also refer to: Psychology * Need for cognition, in psychology * Need for closure, social psychological term Sports * NFC Championship Game, the National Football Conference Championship Game * NCAA Football Championship (Philippines) * National football centre, soccer centre in several countries * Newcastle F.C., Northern Irish football team * Newington F.C., Northern Irish football team * Newtowne F.C., Northern Irish football team * Northeast Football Conference, junior college football conference Organizations * National Fertilizer Corporation, a state-owned enterprise in Pakistan * National Finance Center of the US Department of Agriculture * Nuclear Fuel Complex, a division of the Department of Atomic Energy in India * National Finance Commission Award, a series of economic reforms in P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Factory Instrumentation Protocol
The Factory Instrumentation Protocol or FIP is a standardized field bus protocol. Its most current definition can be found in the European Standard EN50170. History The FIP standard is based on a French initiative in 1982 to create a requirements analysis for a future field bus standard. The study led to the European Eureka initiative for a field bus standard in June 1986 that included 13 partners. The development group (réseaux locaux industriels) created the first proposal to be standardized in France. The name of the FIP field bus was originally given as an abbreviation of the French "Flux d'Information vers le Processus" while later referring to FIP with the English name "Factory Instrumentation Protocol" (some references also use the hybrid "Flux Information Protocol"). Based on the requirements study other manufacturers created similar protocol definitions - starting in 1990 a number of partners from Japan and America merged with FIP to the WorldFIP standardization group ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEC SC65C
The International Electrotechnical Commission (IEC; ) is an international standards organization that prepares and publishes international standards for all electrical, electronic and related technologies. IEC standards cover a vast range of technologies from power generation, transmission and distribution to home appliances and office equipment, semiconductors, fibre optics, batteries, solar energy, nanotechnology, and marine energy, as well as many others. The IEC also manages four global conformity assessment systems that certify whether equipment, system or components conform to its international standards. All electrotechnologies are covered by IEC Standards, including energy production and distribution, electronics, magnetics and electromagnetics, electroacoustics, multimedia, telecommunications and medical technology, as well as associated general disciplines such as terminology and symbols, electromagnetic compatibility, measurement and performance, dependability, desig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Substation
A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low, or the reverse, or perform any of several other important functions. Between the generating station and the consumer, electric power may flow through several substations at different voltage levels. A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages. They are a common component of the infrastructure. There are 55,000 substations in the United States. Substations are also occasionally known in some countries as switchyards. Substations may be owned and operated by an electrical utility, or may be owned by a large industrial or commercial customer. Generally substations are unattended, relying on SCADA for remote supervision and control. The word ''substation'' comes from the days before the distri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEC TC 57
IEC Technical Committee 57 is one of the technical committees of the International Electrotechnical Commission (IEC). TC 57 is responsible for development of standards for information exchange for power systems and other related systems including Energy Management Systems, SCADA SCADA (an acronym for supervisory control and data acquisition) is a control system architecture comprising computers, networked data communications and graphical user interfaces for high-level supervision of machines and processes. It also cove ..., distribution automation & teleprotection. Working groups TC 57 consists of several working groups, each of which is responsible for development of standards within its domain. The active working groups are listed below. External links IEC TC 57IEC TC 57 WGs #057 {{engineering-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
