The Application Research Of CAN Bus On VxWorks

With the constant development of the CAN Bus technology,because of high bit rate and interference immunity that CAN Bus has itself,it becomes more popular in the application of the field of automobile , manufacture and navigation production. Also the development of the CAN Bus receives more and more attention.VxWorks is the Real Time Operating System(RTOS),it is retractable,can be reduced and has reliability,also it can be used on all of the popular CPU platform. Because of its good reliability and brilliant real time attribution,it has been widely used in communication,military affairs,navigation,spaceflight and many other high end technology industries.This paper is funded by the corpus of China State Shipbuilding Corporation,it emphasizes on the techonology of CAN Bus and VxWorks,also it makes the transplant of VxWorks's internal control system to CAN Bus's master control system in order to make navigation system into reality.This paper starts from the character advantage of CAN Bus,then analyses VxWorks's multitasking,I/O interface function and time management. In addition,it introduces the CAN Bus's software and hardware on the background of the navitation system.At last,it establishs a test plan of the CAN Bus network and it also analyses and summarizes the result of the test.The work that this paper has done includes:1. Fieldbus and CAN Bus;2. The introduction of navigation;3. The introduction of embedded operating system VxWorks;4. The construction of CAN Bus network's architecture; 5. The application of VxWorks's load mode in this paper;6. The accomplishment of CAN Bus's main functional module;7. The test plan of CAN Bus network and the analiysis of the result;This paper has planned and realized the CAN Bus's collection and interaction of information in the navigation system on the basis of VxWorks,it affords a reliable network platform for the centralized data detection of the upper client,it offers pratical reliance for automatic design.Besides,this network can be used to realize intelligent garden area,enviromental engineer,plant factory,industrial refrigeration etc.With the avidence of the test,the system can run stabile and reliable,and can be used flexible and conveniently,it has a extensive applicative prospect and promotion value.