关键词: 汽车总线；拓扑图绘制；A*算法；软件设计

Abstract: To adapt to the increasingly complex requirements of modern automobile communication systems, eliminate the hidden dangers of errors caused by manual drawing of automobile bus topology diagram, and improve research and development efficiency, this paper proposes an automatic drawing design scheme of automobile bus topology diagram based on A*algorithm. Firstly, this paper extracts the elements needed for topological graph drawing in actual engineering projects, then combs the automatic drawing process of topological graph, and finally uses A* algorithm to optimize the connection process between nodes and network segments. Based on the actual communication system of a car, compared with the traditional manual drawing, it is verified that this design can significantly improve the drawing efficiency of the automobile bus topology while ensuring clear, beautiful and accurate.

Key words: Automobile bus; Topology diagram drawing; A* algorithm; Software development