摘要
总线报文的发送周期有严格要求,如果发送周期不一致容易导致总线信号异常或者丢帧的情况,也不利于控制器模块的功能执行。组合仪表作为车辆中重要的控制器,当仪表发送的数据出现周期不稳定的情况时,将直接影响仪表的显示功能。文章针对研发过程中出现的仪表CAN报文发送周期异常问题,进行系统深入的研究,并采用鱼骨图方法枚举可能原因,并通过模拟仿真分析出问题的根本原因,最后修改软件后进行测试验证,确认问题已经完全解决。
The transmission cycle of bus messages has strict requirements.If the transmission cycle is inconsistent,it can easily lead to abnormal bus signals or frame loss,which is not conducive to the functional execution of the controller module.As an important controller in vehicles,the combination instrument,when the data sent by the instrument is unstable,it will directly affect the display function of the instrument.This article conducts a systematic and in-depth study on the issue of abnormal CAN message transmission cycle in the development process of the instrument,and uses fishbone diagram method to enumerate possible reasons.The root cause of the problem is analyzed through simulation.Finally,after modifying the software,testing and verification are carried out to confirm that the problem has been completely solved.
作者
肖武
XIAO Wu(Jiangling Motors Co.,Ltd.,Nanchang 330200,China)
出处
《汽车电器》
2024年第12期66-67,共2页
Auto Electric Parts
关键词
控制器
报文周期
仪表
鱼骨图
controller
message cycle
instrument
fishbone diagram
