Automotive Electronics

总线系统 – Bus Systems

CAN, FlexRay, Ethernet, K-Line, LIN and MOST in use

除了由法律规定的通过诊断连接接口(CAN或者K线)访问车辆外,车辆内其他的总线系统也确立了其标准。这些总是集中于满足特定的需要,从降低高带宽传输实施成本到总线在安全相关的分布式控制系统中的应用。

 

CAN ISO 11898

[Translate to Chinesisch:] CAN ISO 11898

The CAN bus (Controller Area Network) was introduced to enable the networking of a large number of ECUs. It permits high data rates in diagnostics and flash programming.

 

 

CAN FD ISO 11898-1

CAN FD ISO 11898-1

CAN with flexible data rate (CAN FD) overcomes the limitations of the classical CAN bus in terms of data transfer rate. In practice the data throughput of CAN FD is six times higher than classical CAN, depending on the network topology.

 

D-PDU API (ISO 22900)

LIN

LIN bus (Local Interconnected Network) enables the inexpensive integration of sensors and actuators in vehicle networks. It creates small subnets.


 

 

FlexRay

FlexRay

FlexRay was invented at the beginning of this century to be able to implement an appropriate bus system for security-critical applications. It enables deterministic time responses and is designed to be redundant.
 

 

MOST

MOST

MOST (Media Oriented System Transport) was introduced at the beginning of this century to simplify the integration of infotainment ECUs into the vehicle thanks to its special communication mechanisms and high data rates.

 

K-Line ISO 9141

K-Line ISO 9141

In the 1990s, the K-Line was one of the first ways of accessing ECUs in completed vehicles. This is why it was stipulated in the first OBD standards and has been in use ever since. Today, it is being replaced in new projects by CAN.
 

 

SAE J1850

SAE J1850

The launch of OBD led to standardized access of vehicle networks – something enabled in the US with the help of the J1850 standard.


 

 

Ethernet

Ethernet

With Ethernet, a standard that has been used successfully for years now in networking is currently being introduced to automotive electronics. In addition to inexpensive components, a major advantage is the extremely high bandwidth.

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