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J1939
Society of Automotive Engineers standard SAE J1939 is the vehicle bus recommended practice used for communication and diagnostics among vehicle components. Originating in the car and heavy-duty truck industry in the United States, it is now widely used in other parts of the world. SAE J1939 is used in the commercial vehicle area for connection and communication throughout the vehicle, with the physical layer defined in ISO 11898. A different physical layer is used between the tractor and trailer, specified in ISO 11992. History Originally, Controller Area Network (CAN) was not mentioned in J1939, which covered cars and tractor-trailer rigs, and with some dual and triple use 8-bit addresses assigned by the SAE J1939 board. CAN was not originally free, but its instruction set did fit in the custom instruction format of J1939. This was true as of 2000. Since then, CAN has been included, the chipset for J1939 has been clocked faster, and 16-bit addresses (PGN) have replaced 8-bit add ... [...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] |
Vehicle Bus
A vehicle bus is a specialized internal communications network that interconnects components inside a vehicle (e.g., automobile, bus, train, industrial or agricultural vehicle, ship, or aircraft). In electronics, a bus is simply a device that connects multiple electrical or electronic devices together. Special requirements for vehicle control such as assurance of message delivery, of non-conflicting messages, of minimum time of delivery, of low cost, and of EMF noise resilience, as well as redundant routing and other characteristics mandate the use of less common networking protocols. Protocols include Controller Area Network (CAN), Local Interconnect Network (LIN) and others. Conventional computer networking technologies (such as Ethernet and TCP/IP) are rarely used, except in aircraft, where implementations of the ARINC 664 such as the Avionics Full-Duplex Switched Ethernet are used. Aircraft that use AFDX include the B787, the A400M and the A380. Trains commonly use Ethern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Controller Area Network
A Controller Area Network (CAN bus) is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other's applications without a host computer. It is a message-based protocol, designed originally for multiplex electrical wiring within automobiles to save on copper, but it can also be used in many other contexts. For each device, the data in a frame is transmitted serially but in such a way that if more than one device transmits at the same time, the highest priority device can continue while the others back off. Frames are received by all devices, including by the transmitting device. History Development of the CAN bus started in 1983 at Robert Bosch GmbH. The protocol was officially released in 1986 at the Society of Automotive Engineers (SAE) conference in Detroit, Michigan. The first CAN controller chips were introduced by Intel in 1987, and shortly thereafter by Philips. Released in 1991, the Mercedes-Benz W140 was the first produ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CANopen
CANopen is a communication protocol and device profile specification for embedded systems used in automation. In terms of the OSI model, CANopen implements the layers above and including the network layer. The CANopen standard consists of an addressing scheme, several small communication protocols and an application layer defined by a device profile. The communication protocols have support for network management, device monitoring and communication between nodes, including a simple transport layer for message segmentation/desegmentation. The lower level protocol implementing the data link and physical layers is usually Controller Area Network (CAN), although devices using some other means of communication (such as Ethernet Powerlink, EtherCAT) can also implement the CANopen device profile. The basic CANopen device and communication profiles are given in the CiA 301 specification released by CAN in Automation. Profiles for more specialized devices are built on top of this basic pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO 11898
A Controller Area Network (CAN bus) is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other's applications without a host computer. It is a message-based protocol, designed originally for multiplex electrical wiring within automobiles to save on copper, but it can also be used in many other contexts. For each device, the data in a frame is transmitted serially but in such a way that if more than one device transmits at the same time, the highest priority device can continue while the others back off. Frames are received by all devices, including by the transmitting device. History Development of the CAN bus started in 1983 at Robert Bosch GmbH. The protocol was officially released in 1986 at the Society of Automotive Engineers (SAE) conference in Detroit, Michigan. The first CAN controller chips were introduced by Intel in 1987, and shortly thereafter by Philips. Released in 1991, the Mercedes-Benz W140 was the first p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fleet Management System
The Fleet Management Systems Interface (FMS) is a standard interface to vehicle data of commercial vehicles. The six European manufacturers Daimler AG, MAN AG, Scania, Volvo (including Renault), DAF Trucks and IVECO developed the so-called FMS-Standard in 2002 to make manufacturer-independent applications for telematics possible. The following data are broadcast at the FMS interface: * Vehicle improvement (all round) * Vehicle speed (wheel based) * Vehicle speed (from tachograph) * Clutch switch (on/off) * Brake switch (on/off) * Cruise control (on/off) * PTO (Status/Mode) * Accelerator pedal position (0–100%) * Total fuel used (litres since lifetime) * Fuel level (0–100%) * Engine speed * Gross axle weight rating (kg) * Total engine hours (h) * FMS-Standard software version (supported modes) * Vehicle identification number (ASCII) * Tachograph information * High-resolution vehicle distance * Service distance * Engine coolant temperature The data are coded according to SAE J1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SAE International
SAE International, formerly named the Society of Automotive Engineers, is a United States-based, globally active professional association and standards developing organization for engineering professionals in various industries. SAE International's world headquarters is in Warrendale, Pennsylvania, 20 miles north of Pittsburgh, Pennsylvania. Principal emphasis is placed on global transport industries such as aerospace, automotive, and commercial vehicles. The organization adopted the name SAE International to reflect the broader emphasis on mobility. SAE International has over 138,000 global members. Membership is granted to individuals, rather than companies. Aside from its standardization efforts, SAE International also devotes resources to projects and programs in STEM education, professional certification, and collegiate design competitions. For historical legacy reasons, the label "SAE" is commonly used on tools and hardware in North America to indicate United States c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO 11992
ISO 11992 is a CAN based vehicle bus standard by the heavy duty truck industry. It is used for communication between the tractor and one or more trailers. Its full title is "Road vehicles -- Interchange of digital information on electrical connections between towing and towed vehicles". The protocol structure is similar to SAE J1939 Society of Automotive Engineers standard SAE J1939 is the vehicle bus recommended practice used for communication and diagnostics among vehicle components. Originating in the car and heavy-duty truck industry in the United States, it is now widely .... The main differences are timing, bus voltage level and the structure of the message's 29-bit identifier. External links Official texts ISO 11992-1:2003 - Part 1: Physical and data-link layers* [http://www.iso.org/iso/home/store/catalogue_ics/catalogue_detail_ics.htm?ics1=43&ics2=040&ics3=15&csnumber=33470 ISO 11992-3:2003 - Part 3: Application layer for equipment other than brakes and running gea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ISO 11783
ISO 11783, known as Tractors and machinery for agriculture and forestry—Serial control and communications data network (commonly referred to as "ISO Bus" or "ISOBUS") is a communication protocol for the agriculture industry based on the SAE J1939 protocol (which includes CANbus) . It is managed by the ISOBUS group in VDMA. The ISOBUS standard specifies a serial data network for control and communications on forestry or agricultural tractors and implements. Parts The standard comes in 14 parts: *ISO 11783-1: General standard for mobile data communication *ISO 11783-2: Physical layer *ISO 11783-3: Data link layer *ISO 11783-4: Network layer *ISO 11783-5: Network management *ISO 11783-6: Virtual terminal *ISO 11783-7: Implement messages application layer *ISO 11783-8: Power train messages *ISO 11783-9: Tractor ECU *ISO 11783-10: Task controller and management information system data interchange *ISO 11783-11: Mobile data element dictionary *ISO 11783-12: Diagnostics ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
J1708
Society of Automotive Engineers standard SAE J1708 is a standard used for serial communications between ECUs on a heavy duty vehicle and also between a computer and the vehicle. With respect to Open System Interconnection model (OSI), J1708 defines the physical layer. Common higher layer protocols that operate on top of J1708 are SAE J1587 and SAE J1922. The protocol is maintained by SAE International. Description The standard defines a 2-wire 18 gauge wire cable that can run up to and operates at 9600 bit/s. A message is composed of up to 21 characters, unless the engine is stopped and the vehicle is not moving in which case transmitters are allowed to exceed the 21 byte max message length. Messages start with a Message ID (MID) character and finish with a checksum at the end. Characters are transmitted in the common 8N1 format. The hardware utilized are RS-485 transceivers wired for open collector operation through the use of a pullup and pulldown of the separate data lin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CAN FD
CAN FD (Controller Area Network Flexible Data-Rate) is a data-communication protocol used for broadcasting sensor data and control information on 2 wire interconnections between different parts of electronic instrumentation and control system. This protocol is used in modern high performance vehicles. CAN FD is an extension to the original CAN bus protocol that was specified in ISO 11898-1. The basic idea to overclock part of the frame and to oversize the payload dates back to 1999. Developed in 2011 and released in 2012 by Bosch, CAN FD was developed to meet the need to increase the data transfer rate up to 5 times faster and with larger frame/message sizes for use in modern automotive Electronic Control Units (ECUs). As in the classic CAN, CAN FD protocol is designed to reliably transmit and receive sensor data, control commands and to detect data errors between electronic sensor devices, controllers and microcontrollers. Although CAN FD was primarily designed for use in high p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fleet Telematics System
A Fleet Telematics System (FTS) allows the information exchange between a commercial vehicle fleet and their central authority, i.e., the dispatching office. A FTS typically consists of mobile Vehicle Systems (VS) and a stationary Fleet Communication System (FCS). The FCS may be a stand-alone application maintained by the motor carrier or an internet service running by the supplier of the system. The FCS usually includes a database in which all vehicle positions and messages are stored. Digital maps are often included which allow visualization of vehicle positions and traces. Communication with the FCS is realized by trunked radio, cellular, or satellite communication. Positioning of vehicles is usually realized by satellite positioning systems and/or dead reckoning using gyroscope and odometer. Usually, the VS is equipped with a simple input device allowing drivers to send predefined status messages. Drivers may add simple content, e.g., numeric values, but usually cannot ente ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
