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With advances in technology, the automotive industry is booming, more and more demand to increase with the rapid development of the automotive industry, automotive consumer for comfortable car entertainment requirements increasing, traditional automotive network technology has been unbearable multiple harness shackles, according to the traditional way of access or additional equipment, each additional one electronic device to be increased at least a harness, this is the case not only increase in the harness of the car, electromagnetic interference is serious, the instability of the data expand , and increase the weight of the body itself, serious bondage with the rapid development of the automotive industry. Vehicle bus development molding CAN bus, LIN bus, but their applications are vulgar vehicle network series, higher requirements for media transmission, they are still unable to complete the task, the MOST bus technology ready to come out. With the increase of the vehicle-mounted device, and the cars in the bandwidth of the network increases, for example: the ordinary transmission DVD data requires 10.4MB / S, the transmission TV data is required to 14MB / S, these bandwidth network protocols in the ordinary car opinion catch up and the MOST was easily able to solve this problem. MOST bus-car media streaming, it generates in response to vehicle speed media equipment needs as well as comfort functions, the many advantages of the MOST bus, such as the anti-interference ability and fast transfer rate, data fault tolerance, MOST the transmission rate is divided into several, generally is 25Mbps or 50Mbps, 150Mbps transfer rate will also have in the near future, but due to the vehicle electronics for high immunity requirements for 150Mbps development of the MOST is still unknown, but To be sure, it is an inevitable trend. The MOST obvious advantages, in car entertainment systems are more widely used, it can be said, the MOST bus will become the vehicle network entertainment system, the most promising vehicle bus one. The highlight of the development history and background of the MOST, MOST, MOST of the forward-looking as well as in-car entertainment systems, applications and the importance to understand a whole. Followed by the introduction of the MOST25 the overall structure is then introduced MOST agreement, which this study is based on the synchronous data area based protocol, but the area of ??synchronous data and asynchronous data area shared data area, so must be introduced, again described The overall design of the MOST network, which is the focus of the entire article, details the MOST ring design, as well as the MOST each node design, including the hardware structure design, the design of the master node, node design of the CD player, voice control node design, amplifier node design, and so on, the end of this chapter describes the system simulation, system simulation theory for a number of forward-looking to complete the effect. The end of this article describes the the MOST network testing and diagnosis, the use of some advanced diagnostic tools, standard diagnostic MOST ring is conducive to detect the occurrence of errors, and provides a great help for the car detection.
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