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in-vehicle network (IVN)

Modern motor vehicles have a high level of electronics for the various driving, driver assistance, navigation, ride comfort, communication and entertainment functions. The control units for the various functional areas are interconnected with an in-vehicle network (IVN) consisting of fieldbuses and local networks. The central component of the communication is the Central Gateway( CGW).

An In-Vehicle Network is an on- board vehicle network via which all control signals for the many sensors and actuators are transmitted. A summary list provides a quick overview of the many functional areas:

  • The supply of the 12 V or 48 V supply voltage combined with battery management. In addition to the classic 12 V on-board network, the 48 V on-board network is increasingly being used, and in electric vehicles the supply voltages are several hundred volts. In addition, these vehicles are concerned with monitoring the state of charge and the charging cycles of the batteries.
  • Driving comfort. As far as driving comfort is concerned, this involves seat adjustment, air conditioning with ventilation, and the display on which all relevant information about driving speed, fuel consumption, oil temperature, traffic information, congestion reports, weather information, road conditions, and more is shown to the driver.
  • Driving behavior and engine control. Electronic control units provide engine speed control, proper transmission, braking system control, and tire pressure control, to name a few.
  • Driver assistance systems. There are many driver assistance systems that use short-range radars and long-range radars to assist with lane keeping and changing, distance keeping, parking and other functions. There are also various sensors for moisture, darkness, traffic light detection, traffic sign recognition and other functions.
  • Navigation. The navigation devices available in motor vehicles can be used to determine the driving route between the departure point and the destination under various parameters such as the shortest or the fastest driving route.
  • Information. Modern motor vehicles are equipped with all possible modern information and communication services. The information service includes radio and digital traffic broadcasting( TMC) with the motorist broadcast information(ARI) and TPEG service. In addition, the information on road conditions and traffic congestion by means of C2C communication and C2I communication.
  • Communications. Mobile networks and their transmission towers are often oriented to traffic-intensive areas, so that accessibility on highways is completely guaranteed. Unlocking facilities allow phone calls to be made while driving.
  • Infotainment. In-vehicle inf otainment( IVI) is a special infotainment system developed for automobiles that can receive digital audio broadcasting( DAB) and digitalvideobroadcasting( DVB) while driving. Logging on to the Internet is also no problem. Multimedia applications and computer games can be accessed via USB sticks and CD and DVD players.

All the applications mentioned run via the In-Vehicle Network with its fieldbuses and local networks such as automotive Ethernet.

Englisch: in-vehicle network - IVN
Updated at: 24.04.2021
#Words: 452
Links: level, electronics, driver, navigation (NAV), communication (COM)
Translations: DE

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