车辆外廓尺寸检测系统设计
发布时间：2018-09-06 16:49
【摘要】：随着国家经济发展,我国汽车拥有量大幅提升,由非法车辆改装导致的超载超限引发了一系列社会环境问题,对国家和人民生命财产造成巨大损失。《道路车辆外廓尺寸、轴荷及质量限值》(GB1589-2004)严格规范车辆生产厂家的生产。《营运车辆综合性能要求和检验方法》(GB18565-2001)要求车辆不得任意改造其结构,且需要对汽车尺寸参数进行检测。车辆外廓尺寸参数成为汽车通过性参数及运行安全检测的重要内容之一。 本文提出一种车辆外廓尺寸的检测方法,该方法利用投影测量原理,通过光幕传感器构造立体平行光源,通过检测车辆对平行光束的遮挡来测量车辆外型尺寸。车辆外廓尺寸检测系统是一种典型测试测量系统,采用上中下三层系统结构。系统安装了大量传感器,自主开发了一款嵌入式数据采集卡,实现对传感器信息高速实时采集和控制,并通过以太网技术向上位机程序传输数据。运用现代软件设计技术开发可靠性高和扩展性强的上位机程序,为系统将来的扩展升级奠定基础。 本文首先详细分析了车辆外廓尺寸参数检测的必要性及当前研究现状,并提出了一套可行的检测系统方案。然后详细介绍基于ARM Contex-M3芯片的数据采集,并重点说明了采集卡关键部分硬件电路设计。在μCOS/II实时操作系统和LWIP网络协议栈的基础上进行嵌入式软件设计。在系统上位机的设计中,首先介绍了LabVIEW开发平台,然后深入研究基于面向对象编程的综合型应用程序设计模式和各个功能模块程序设计。通过实车测试验证系统的稳定性和精确性,表明系统达到预期研究目标,满足检测要求。最后归纳总结论文所完成工作,并对系统后续可以继续研究的方面进行展望。
[Abstract]:With the development of national economy, car ownership in China has been greatly increased. Overloading and overloading caused by illegal vehicle conversion has caused a series of social and environmental problems, resulting in huge loss of life and property of the state and people. The axle load and mass limit value > (GB1589-2004) strictly regulates the production of the vehicle manufacturer. (GB18565-2001) requires that the vehicle must not be arbitrarily modified its structure, and the size parameters of the vehicle should be tested. The dimension parameter of vehicle profile has become one of the important contents of vehicle passing parameter and running safety detection. In this paper, a method of measuring vehicle exterior dimension is presented. The method uses projection measurement principle, constructs stereoscopic parallel light source through light screen sensor, and measures vehicle exterior dimension by detecting the occlusion of vehicle to parallel light beam. The vehicle profile measurement system is a typical measuring system, which adopts the structure of upper, middle and lower layers. A large number of sensors are installed in the system, and an embedded data acquisition card is developed, which can collect and control the sensor information at high speed and in real time, and transmit data to the host computer by Ethernet technology. The application of modern software design technology to develop the upper computer program with high reliability and strong expansibility lays the foundation for the future expansion and upgrade of the system. In this paper, the necessity and current research status of vehicle exterior dimension parameter detection are analyzed in detail, and a set of feasible detection system scheme is put forward in this paper. Then the data acquisition based on ARM Contex-M3 chip is introduced in detail, and the hardware circuit design of the key part of the acquisition card is emphasized. The embedded software is designed on the basis of 渭 COS/II real-time operating system and LWIP network protocol stack. In the design of the upper computer of the system, the LabVIEW development platform is first introduced, and then the design pattern of integrated application program based on object-oriented programming and the program design of each function module are deeply studied. The stability and accuracy of the system are verified by real vehicle test, which shows that the system achieves the expected research goal and meets the detection requirements. Finally, the paper summarizes the work done, and the system can continue to study the future aspects of the outlook.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.41;U495
本文编号：2226955
[Abstract]:With the development of national economy, car ownership in China has been greatly increased. Overloading and overloading caused by illegal vehicle conversion has caused a series of social and environmental problems, resulting in huge loss of life and property of the state and people. The axle load and mass limit value > (GB1589-2004) strictly regulates the production of the vehicle manufacturer. (GB18565-2001) requires that the vehicle must not be arbitrarily modified its structure, and the size parameters of the vehicle should be tested. The dimension parameter of vehicle profile has become one of the important contents of vehicle passing parameter and running safety detection. In this paper, a method of measuring vehicle exterior dimension is presented. The method uses projection measurement principle, constructs stereoscopic parallel light source through light screen sensor, and measures vehicle exterior dimension by detecting the occlusion of vehicle to parallel light beam. The vehicle profile measurement system is a typical measuring system, which adopts the structure of upper, middle and lower layers. A large number of sensors are installed in the system, and an embedded data acquisition card is developed, which can collect and control the sensor information at high speed and in real time, and transmit data to the host computer by Ethernet technology. The application of modern software design technology to develop the upper computer program with high reliability and strong expansibility lays the foundation for the future expansion and upgrade of the system. In this paper, the necessity and current research status of vehicle exterior dimension parameter detection are analyzed in detail, and a set of feasible detection system scheme is put forward in this paper. Then the data acquisition based on ARM Contex-M3 chip is introduced in detail, and the hardware circuit design of the key part of the acquisition card is emphasized. The embedded software is designed on the basis of 渭 COS/II real-time operating system and LWIP network protocol stack. In the design of the upper computer of the system, the LabVIEW development platform is first introduced, and then the design pattern of integrated application program based on object-oriented programming and the program design of each function module are deeply studied. The stability and accuracy of the system are verified by real vehicle test, which shows that the system achieves the expected research goal and meets the detection requirements. Finally, the paper summarizes the work done, and the system can continue to study the future aspects of the outlook.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP391.41;U495
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，本文编号：2226955
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