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基于UDP协议的EOL主从控制研究与应用

2021-11-03张晓光,李岩,张海龙

汽车科技 2021年5期

张晓光,李岩,张海龙

摘  要:本文设计了以EOL(End Of Line)设备为控制端,检测线设备为执行端的主从控制体系,进而将车辆CAN总线通讯工艺内容从检测线设备剥离,统一由电检设备完成。本文基于UDP协议制定了通讯标准架构,并以控制检测线设备-驾驶辅助SCBS标靶为例,证明了该体系的实用性。目前已历经300000车辆生产验证,该体系在稳定性、容错性等方面满足工业生产要求,可将该技术在整车制造行业进行推广使用。

关键词:EOL;检测线;主从控制;UDP协议

中图分类号:TP393.1     文献标识码:A     文章编号:1005-2550(2021)05-0025-07

Research and Application of EOL Master slave Control based on UDP Protocol

ZHANG Xiao-guang1, LI Yan2, ZHANG Hai-long2

( 1.Electronic and electrical Development Dept, Faw Bestune Co.,Ltd,ChangChun130012, China ; 2.Manufacturing Engineering &Logistics Department,China FAW Group., Ltd, ChangChun 130012, China )

Abstract: This paper designs a master-slave control system with EOL (End Of Line) equipment as the control End and detection Line equipment as the executive End, and then separates the communication process content Of vehicle CAN bus from detection Line equipment to be completed by electrical inspection equipment. In this paper, the communication standard architecture is developed based on UDP protocol, and the usability of the system is proved by taking the actual case of control detector device - driving assistance SCBS target as an example. At present, the system has been verified in the production of 300,000 vehicles. The system can meet the requirements of industrial production in terms of stability andfault tolerance , etc., and the technology can be popularized and used in the whole vehicle manufacturing industry.

1    引言

隨着电子信息技术的高速发展,复杂、多样的汽车电子技术得到了普及和应用,使汽车从低端车简单的一路CAN网络发展为高端车复杂的6路以上CAN网络,从简单车辆装载几个电子ECU模块发展为高端车近百个电子ECU模块,新技术的应用为汽车制造总装领域电器检测技术带来了革新性变化。具体技术变化体现在以下几个方面:其一,EOL(End Of Line)便携式设备被大量布置在装配线上,用于ECU零件检查、ECU配置写入、ECU故障读取、ECU功能检查、电路通断检查等工艺用途;其二,检测线设备(四轮定位、转毂、大灯仪、制动测试台、加注设备、驾驶辅助设备)参与着ECU功能标定、ECU功能检查、ECU故障读取等工艺用途。随着车辆总线通讯设备种类的增多,同时,带来了诸多弊端:往往一个电控单元的技术变更,例如零件版本升级、诊断协议变更、检查方法升级、安全算法升级等,带来的是所有通讯诊断类设备程序的同时升级,由此带来了改造时间耗时长、改造费用投资高等弊端。……

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