Automotive Bus Systems

In a car, there are several operating fields with different requirements regarding the corresponding bus system. Each of the bus systems mentioned above is used to serve a certain communication requirement between the automotive electronic components. The designer selects the appropriate bus system depending on the required safety level, the data transmission rate and the costs. For example, the CAN bus even though it is currently the most important automotive bus system is not well-suited for very fast data transmission as needed for multimedia applications. Also, the CAN bus system is too sophisticated, and therefore too expensive for applications with low data rates, where only few parts of the system are involved in the transmission, for example sun roofs or heating systems. For these applications, new bus systems have been designed.