内燃机排放测量CVS系统控制系统开发

发布时间：2019-05-07 02:45

【摘要】：日益严重的雾霾已经影响到了人们的日常生活,北京、河北、山东等地的居民深受其害。而汽车尾气排放在大气污染尤其是在雾霾的成因方面作出的贡献随着汽车保有量的快速增长而迅速增加,因此汽车尾气排放受到了社会各界广泛关注。世界各国都针对汽车排放制定了越来越严格的相关法律法规。汽车生产企业和科研单位也作出努力使汽车排放技术得到了很大的改进和提高,降低了尾气中的污染物浓度,排放检测技术和设备在其中起到了很大的促进作用。本文以北京理工大学汽车动力性及排放测试国家专业实验室CVS设备为研究对象,为CVS设备重新匹配工控机和输入输出板卡;确定系统控制方案为集中式控制系统;利用串行端口通信技术,以AVL排放测试设备之间的通信协议—AK协议为基础;使用面向对象编程语言Delphi,采用面向对象编程技术,通过模块化结构设计,以开发操作简便、界面友好、可靠地控制软件为目的,开发了具备高可靠性的CVS系统控制软件。CVS系统控制系统的开发完成,恢复了原系统的气袋采样、颗粒采样等功能,并且通过设计友好的操作界面方便了操作者的使用,同时避免了因为系统设备升级带来的成本增加,达成了本课题的开发目标。
[Abstract]:Increasingly serious haze has affected people's daily lives, and residents in Beijing, Hebei, Shandong and other places suffer from it. The contribution of vehicle exhaust emissions in air pollution, especially in the cause of haze, increases rapidly with the rapid increase of vehicle ownership, so the emission of automobile exhaust has been paid more and more attention by all walks of life. Countries all over the world have made more and more stringent laws and regulations on automobile emissions. Automobile manufacturing enterprises and scientific research institutions have also made great efforts to improve and improve the automobile emission technology and reduce the concentration of pollutants in tail gas. Emission detection technology and equipment have played a great role in promoting the emission. In this paper, the CVS equipment of Beijing Institute of Technology Automobile Power and Emission Test Laboratory is taken as the research object, the industrial control computer and the input / output board card are re-matched for the CVS equipment, and the control scheme of the system is determined as the centralized control system. Based on the communication protocol of AVL emission test equipment-AK protocol, the serial port communication technology is used. Using the object-oriented programming language Delphi, the object-oriented programming technology and modular structure design are adopted in order to develop the software which is easy to operate, friendly in interface and reliable in control. The control software of CVS system with high reliability is developed. The development of the control system restores the functions of gas bag sampling and particle sampling of the original system, and facilitates the use of the operator by designing a friendly operation interface. At the same time, the cost increase caused by the upgrade of the system equipment is avoided, and the development goal of this subject is achieved.
【学位授予单位】：北京理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U467.48

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