|
Marine Electronics
Marine electronics refers to electronics devices designed and classed for use in the marine environment on board ships and yachts where even a small amount of salt water can destroy some electronics devices. Therefore, the majority of these types of devices are either water resistant or waterproof. Marine electronics devices include chartplotter, marine VHF radio, autopilot and self-steering gear, fishfinder and sonar, marine radar, GPS, fibre optic gyrocompass, satellite television, and marine fuel management. Communication The electronics devices communicate by using a protocol defined by National Marine Electronics Association(NMEA), with two standards available, NMEA 0183 (serial communication network) and NMEA 2000 (controller-area network based technology). There is also Lightweight Ethernet (LWE). In recent years, the International Electrotechnical Commission (IEC) has created a new standards suite for "Digital interfaces for navigational equipment within a ship". This i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronics
The field of electronics is a branch of physics and electrical engineering that deals with the emission, behaviour and effects of electrons using electronic devices. Electronics uses active devices to control electron flow by amplification and rectification, which distinguishes it from classical electrical engineering, which only uses passive effects such as resistance, capacitance and inductance to control electric current flow. Electronics has hugely influenced the development of modern society. The central driving force behind the entire electronics industry is the semiconductor industry sector, which has annual sales of over $481 billion as of 2018. The largest industry sector is e-commerce, which generated over $29 trillion in 2017. History and development Electronics has hugely influenced the development of modern society. The identification of the electron in 1897, along with the subsequent invention of the vacuum tube which could amplify and rectify small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NMEA 2000
NMEA 2000, abbreviated to NMEA2k or N2K and standardised as IEC 61162-3, is a plug-and-play communications standard used for connecting marine sensors and display units within ships and boats. Communication runs at 250 kilobits-per-second and allows any sensor to talk to any display unit or other device compatible with NMEA 2000 protocols. Details Electrically, NMEA 2000 is compatible with the Controller Area Network ("CAN Bus") used on road vehicles and fuel engines. The higher-level protocol format is based on SAE J1939, with specific messages for the marine environment. Raymarine SeaTalk 2, Raymarine SeaTalkNG, Simrad Simnet, and Furuno CAN are rebranded implementations of NMEA 2000, though may use physical connectors different from the standardised DeviceNet 5-pin A-coded M12 screw connector, all of which are electrically compatible and can be directly connected. The protocol is used to create a network of electronic devices—chiefly marine instruments—on a boat. Vario ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RS-422
RS-422, also known as TIA/EIA-422, is a technical standard originated by the Electronic Industries Alliance that specifies electrical characteristics of a digital signaling circuit. It was meant to be the foundation of a suite of standards that would replace the older RS-232C standard with standards that offered much higher speed, better immunity from noise, and longer cable lengths. RS-422 systems can transmit data at rates as high as 10 Mbit/s, or may be sent on cables as long as at lower rates. It is closely related to RS-423, which uses the same signaling systems but on a different wiring arrangement. RS-422 specifies differential signaling, with every data line paired with a dedicated return line. It is the voltage difference between these two lines that define the mark and space, rather than, as in RS-232, the difference in voltage between a data line and a local ground. As the ground voltage can differ at either end of the cable, this required RS-232 to use signals with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simplex Communication
Simplex communication is a communication channel that sends information in one direction only."Simplex" ''The IEEE Authoritative Dictionary of Standard Terms, 7th Ed.'', 2000, Inst. of Electrical and Electronic Engineers, p.1053 The International Telecommunication Union definition is a communications channel that operates in one direction at a time, but that may be reversible; this is termed half duplex in other contexts. A duplex communication channel requires two simplex channels operating in opposite directions at the same time. For example, in TV and radio broadcasting, information flows only from the transmitter site to multiple receivers. A pair of walkie-talkie two-way radios provide a simplex circuit in the ITU sense; only one party at a time can talk, while the other listens until it can hear an opportunity to transmit. The transmission medium (the radio signal over the air) can carry information in only one direction. The old Western Union company used the term sim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ASCII
ASCII ( ), abbreviated from American Standard Code for Information Interchange, is a character encoding standard for electronic communication. ASCII codes represent text in computers, telecommunications equipment, and other devices. Because of technical limitations of computer systems at the time it was invented, ASCII has just 128 code points, of which only 95 are , which severely limited its scope. All modern computer systems instead use Unicode, which has millions of code points, but the first 128 of these are the same as the ASCII set. The Internet Assigned Numbers Authority (IANA) prefers the name US-ASCII for this character encoding. ASCII is one of the IEEE milestones. Overview ASCII was developed from telegraph code. Its first commercial use was as a seven-bit teleprinter code promoted by Bell data services. Work on the ASCII standard began in May 1961, with the first meeting of the American Standards Association's (ASA) (now the American National Standards I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RS-232
In telecommunications, RS-232 or Recommended Standard 232 is a standard originally introduced in 1960 for serial communication transmission of data. It formally defines signals connecting between a ''DTE'' (''data terminal equipment'') such as a computer terminal, and a ''DCE'' (''data circuit-terminating equipment'' or ''data communication equipment''), such as a modem. The standard defines the electrical characteristics and timing of signals, the meaning of signals, and the physical size and pinout of connectors. The current version of the standard is ''TIA-232-F Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange'', issued in 1997. The RS-232 standard had been commonly used in computer serial ports and is still widely used in industrial communication devices. A serial port complying with the RS-232 standard was once a standard feature of many types of computers. Personal computers used them for connecti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stowe Marine
Stowe Marine is a developer and manufacturer of advanced instrumentation systems for racing and cruising sailing yachts. Introduction Stowe instruments can be found on many of the world's leading sailing yachts, such as Velsheda. Stowe is now based in Lymington on the south coast of England. History The company was founded in the 1970s by Alan Cozens in a shed in his back garden in Rowlands Castle, Hampshire, England. The first product which proved very popular was the Trailing Log, a portable battery powered instrument that measures boat speed and distance run. Thousands of these early instruments are still in use today. Over the course of the 1980s and 1990s Stowe extended its activities into Integrated Instruments, Autopilots and Navigation Plotters. As a company Stowe has changed hands a number of times during its 25+ year lifetime, and is now a subsidiary of Tinley Electronics, the Lymington based marine electronics service company. Stowe however remains headquartered just ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Simrad Yachting
Simrad Yachting is a manufacturer of marine electronics for the leisure and professional markets. A member of the Navico family of brands, Simrad Yachting develops, manufactures and distributes navigation systems, autopilots, marine VHF radios, chartplotters, echosounders, radars, fishfinders and a wide range of other marine technology. History The Simrad name has been in existence for over sixty years. The brand was established in 1947 by Willy Christian Simonsen, who set up his own wireless company called Simonsen Radio. Initially he focused on the production of radio communications for fishing vessels but a few years later coined the name Simrad to encompass a wider range of activities – namely the design and manufacture of navigation, communication, auto-steering and fish-finding technologies. In 1996 the Simrad Group was purchased by the Kongsberg Group which, following a decision to focus on the industrial market, sold on the Simrad recreational product range to Alto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raymarine Marine Electronics
Raymarine is a manufacturer and major supplier of electronic equipment for marine use. The company targets both recreational and light commercial markets with their products, which include: *GPS Chartplotters * VHF Radios *Digital Fishfinders / Sonar *Radar * Self-steering gear (Autohelm / Autopilot) *Satellite television *Software solutions The Raymarine brand has been on the market for over 80 years. Within this time, their product range has included visual navigation information equipment. At the moment, Raymarine is one of the global leaders in this niche. Their products work with performance sensors that operate along with intelligence operating systems. Raymarine has a global service network that operates in over 80 countries all over the world. Until 2005 the company manufactured the majority of its products, but this year the company started outsourcing the production process. A year later the company declared to have completed this reorganization. The company focuses on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fast Data EXchange
FDX, short for Fast Data eXchange is a proprietary maritime communication protocol by Nexus Marine AB. It describes how data points from sensors are to be sent across an RS485 serial bus to displays. FDX was originally developed in the 1990s, and is now mostly seen as a legacy protocol. The GND10 gateway from Garmin translates FDX into NMEA 2000, to be able to continue using Nexus sensors on more recent NMEA 2000 NMEA 2000, abbreviated to NMEA2k or N2K and standardised as IEC 61162-3, is a plug-and-play communications standard used for connecting marine sensors and display units within ships and boats. Communication runs at 250 kilobits-per-second and allows ... networks. References {{reflist External links FDX introduction from Nexus Marine* http://www.cruisersforum.com/forums/f13/nexus-bus-or-fdx-protocol-164575.html Github: Reverse engineered FDX parser Global Positioning System Computer buses Marine electronics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Furuno
(commonly known as Furuno) is a Japanese electronics company whose main products are marine electronics, including marine radar systems, fish finders, and navigational instruments. The company also manufactures global positioning systems and medical equipment, and entered the weather radar market in 2013. History Furuno Electric Shokai was founded in Nagasaki, Japan in 1948. The same year, Furuno commercialized the world's first practical fish finder. Manufacturing continued to ramp up as the decade came to a close, and by the mid-1950s, Furuno was producing various Marine supplements, such as early examples of commercial Marine radars. In 1973, Furuno created an early iteration of satellite positioning receivers for vessels at sea. Later that decade, Furuno entered the United States market, establishing an HQ in the United States as Furuno USA. Following this expansion and continued growth, Furuno continued expanding their marine-based radar products. In 2009, Furuno a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Protocol
A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics and synchronization of communication and possible error recovery methods. Protocols may be implemented by hardware, software, or a combination of both. Communicating systems use well-defined formats for exchanging various messages. Each message has an exact meaning intended to elicit a response from a range of possible responses pre-determined for that particular situation. The specified behavior is typically independent of how it is to be implemented. Communication protocols have to be agreed upon by the parties involved. To reach an agreement, a protocol may be developed into a technical standard. A programming language describes the same for computations, so there is a close analogy between protocols and programming languages: ''protocols ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
