The Lamps Control System Based On LIN Bus

With the development of communication technology and much application of microprocessor and IC in auto, auto electronics advances toward networking. Currently network in vehicle has become one of the most popular research and application hotspot in auto electronics field.LIN is one network in vehicle of low cost. It complements current multiple network in vehicle. Overseas the specification research on LIN has been done much and presently great efforts are being made to make it more perfect. At the same time practice application technology on LIN also fast advances. But interiorly the research on LIN is just at starting point. So in our country it is necessary to speed up to research and develop application system on LIN.In this paper as up to date LIN specification version-LIN2.0 is lucubrated and carefully analyzed, some pivotal technologies such as the technology of controller for LIN bus, has been explored, after researched the token-ring network ,using the thought of it , improved the LIN protocol, made the LIN bus have the special of the host nodes communicating with each other, and also this system can check out the changes of the nodes in the network.Though the research of the LIN specification, this paper advance a technique of the car light control system which has been tested in the lab and has been used in the engineering. According to LIN protocol, designed and developed intelligence master and slave nodes. We finished hardware component selection and designed master circuit and Software analysis and procedure realization. In this system, the communication between nodes is according to the norm of the LIN 2.0.The LIN interface is based on the standard UART/SCI. It adopt to the single line standard of ISO9141.The LIN network consist of the improved concept of single master node and multiple slave node and provided the convenient user API.