Research On The Application Of Multimedia System Based On Ethernet Of Vehicle

In a few decades ago,most people still think that the car for himself to be a distant thing;but in a few years later,when people have enjoyed by the vigorous development of automobile industry brought traffic bonus at the same time,also for the automobile experience put forward higher requirements,namely,auxiliary and intelligent driving.However,as far as the current technology is concerned,the process of automobile intelligence is hindered by the limitation of data transmission technology.Ethernet has the characteristics of high bandwidth and low delay.The existing car uses LVDS line to transmit video,LVDS wire material is high cost,connector cost is high,layout is difficult,transmission distance is limited,analog signal is easy to produce image distortion.In the car,the demand for high-definition audio and video transmission is relatively low.It can be used reluctantly.In the future,vehicles will be popularized for ADAS technology.They will use a large number of sensors such as cameras.The LVDS line will not be arranged and the cost of vehicles will be greatly increased.The AVB transmission of high definition data with a pair of twisted pair twisted pair lines can greatly reduce the cost and have scalability to higher bandwidth.This paper mainly introduced the research background of the creation,in the domestic and foreign research as a basis for the possibility of the implementation of this study to pave the way;mainly introduces the audio and video bridge,which is the core technology involved in this study,after the basic design and plan;through the car entertainment demand analysis,combined with the advantages of sound video bridge technology,the function of each module is needed in the system are determined,in the realization of the function of each part at the same time,effectively control the design of each module,so as to clear the logical connection between each module,complete the data transfer between modules;according to the software platform and the function module of demand.The hardware equipment for a reasonable choice;expounds the realization of each function module in the software platform;Verify from the functional aspects of the design,also includes network etc;according to test results,the system designed in this study can better meet the needs of users,and have obtained excellent results in system stability and fluency test.The car for a long time for solution of video transmission line layout of the price is too high,difficult problem,aided by the communication module,the CAN bus signal acquisition vehicle in communication with the outside world,the car signal scheduling,as the future of the car after the car intelligent multi camera multi radar information exchange to support.