Abstract: The application of heavy duty automobile network communication is becoming more and more extensive, the communication of each control unit produces various message data, because the existing controller area network (CAN) bus message information interpretation tools cannot be widely used, the application range of messages is small. In order to make effective use of these message data and get more useful information from the message, this paper based on SAE J1939-71 protocol, combine with Pandas data analysis tool, use Python language to develop a set of program software for message data analysis, which is applied to vehicle fault troubleshooting, message result viewing and other scenarios, to improve the readability and utilization of vehicle messages.

Key words: Heavy duty automobile; CAN bus message; SAE J1939-71 protocol; Data analysis

摘要： 重型汽车网络通信的应用日趋广泛，各个控制单元的通信产生各种各样的报文数据， 因现有的控制器局域网（CAN）总线报文信息解读工具不能普遍应用，使得报文的应用范围 较小。为能有效利用这些报文数据，从报文中得到更多的有用信息，文章基于 SAE J1939-71 协议，结合 Pandas 数据分析工具，使用 Python 语言开发一套用于报文数据解析的程序软件， 应用在车辆故障排查、报文结果查看等场景，可提高车辆报文的可读性和利用率。

关键词: 重型汽车；CAN 总线报文；SAE J1939-71 协议；数据解析