WIM车辆动态称重系统的设计与实现
发布时间：2018-08-04 21:31
【摘要】：随着国民经济的发展,国内商业贸易和公路运输产业也在飞速的发展,与此同时超限超载运输的情况也逐渐增多,这也就促使了国内越来越多的投入到车辆动态称重系统的研究。本文从车辆动态称重系统的整体系统功能介绍入手,介绍了车辆动态称重系统中的数字信号预处理、影响车辆动态称重精度的因素、系统软件设计和系统外场测试等内容。本文首先从整体方面介绍了现存车辆动态称重系统,包括车辆动态称重系统的传感器,介绍了不同传感器的优势和缺点,其次介绍了车辆动态称重系统中对车辆信号的处理方法,包括去噪的方法和运算方法等,然后介绍了车辆动态称重系统中影响测量精度的一些因素,如路面状态、传感器状态等与车辆无关的因素和车辆自身振荡等与车辆相关的因素。然后,本文具体介绍了车辆动态称重系统中的数据处理方法,包括均值滤波、FIR数字滤波和小波变换滤波这三种方法,并根据这三种方法,在matlab中仿真滤波结果和原始波形对比,根据仿真结果和信号处理结果提出软件开发中选择的数据处理方法的具体方案。其次,根据仿真结果提出了软件设计的方案,并设计开发了对应的软件。软件部分包括运行在linux中的嵌入式软件和运行在上位机中的上位机软件。下位机嵌入式软件是使用arm-linux-gcc交叉编译环境开发的,主要包括原始数据接收模块、计算运算模块、数据通信模块和标定配置模块。上位机软件是在Visual C++下开发的,其主要功能是与下位机软件进行数据通信,接收下位机软件的运算数据、状态数据等,并向下位机软件发出配置参数的指令,完成对下位机软件参数进行配置等。最后,根据设计开发的整体系统软件,进行外场测试,在不同传感器布局的情况下,不同车辆车型,以不同速度的情况下验证了整体系统的稳定性和工作的正常性。
[Abstract]:With the development of the national economy, the domestic commercial trade and road transport industry are also developing rapidly. At the same time, the situation of overloaded and overloaded transportation is also gradually increasing. This has prompted more and more research on vehicle dynamic weighing system in China. Starting with the introduction of the whole system function of the vehicle dynamic weighing system, this paper introduces the digital signal preprocessing in the vehicle dynamic weighing system, the factors influencing the vehicle dynamic weighing precision, the system software design and the system external field test, etc. This paper first introduces the existing vehicle dynamic weighing system, including the sensors of the vehicle dynamic weighing system, and introduces the advantages and disadvantages of different sensors. Secondly, the paper introduces the processing methods of vehicle signal in vehicle dynamic weighing system, including denoising method and operation method, and then introduces some factors that affect the measuring precision in vehicle dynamic weighing system, such as road condition. The sensor state is independent of the vehicle and the vehicle oscillation is related to the vehicle. Then, this paper introduces the data processing methods of vehicle dynamic weighing system, including mean filter Fir digital filter and wavelet transform filter. According to these three methods, the filter results are compared with the original waveform in matlab. According to the simulation results and the signal processing results, the specific scheme of the data processing method selected in the software development is put forward. Secondly, according to the simulation results, the software design scheme is proposed, and the corresponding software is designed and developed. The software includes embedded software running in linux and PC software running in PC. The embedded software of the lower computer is developed by using the arm-linux-gcc cross-compiling environment, which mainly includes the raw data receiving module, the computing module, the data communication module and the calibration configuration module. The upper computer software is developed under Visual C. its main function is to communicate with the lower computer software, receive the operation data and state data of the lower computer software, and send the instructions of configuration parameters to the down computer software. Complete the configuration of the lower computer software parameters. Finally, according to the whole system software designed and developed, the external field test is carried out. The stability and normality of the whole system are verified under the conditions of different sensor layout, different vehicle models and different speeds.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U492.321
本文编号：2165226
[Abstract]:With the development of the national economy, the domestic commercial trade and road transport industry are also developing rapidly. At the same time, the situation of overloaded and overloaded transportation is also gradually increasing. This has prompted more and more research on vehicle dynamic weighing system in China. Starting with the introduction of the whole system function of the vehicle dynamic weighing system, this paper introduces the digital signal preprocessing in the vehicle dynamic weighing system, the factors influencing the vehicle dynamic weighing precision, the system software design and the system external field test, etc. This paper first introduces the existing vehicle dynamic weighing system, including the sensors of the vehicle dynamic weighing system, and introduces the advantages and disadvantages of different sensors. Secondly, the paper introduces the processing methods of vehicle signal in vehicle dynamic weighing system, including denoising method and operation method, and then introduces some factors that affect the measuring precision in vehicle dynamic weighing system, such as road condition. The sensor state is independent of the vehicle and the vehicle oscillation is related to the vehicle. Then, this paper introduces the data processing methods of vehicle dynamic weighing system, including mean filter Fir digital filter and wavelet transform filter. According to these three methods, the filter results are compared with the original waveform in matlab. According to the simulation results and the signal processing results, the specific scheme of the data processing method selected in the software development is put forward. Secondly, according to the simulation results, the software design scheme is proposed, and the corresponding software is designed and developed. The software includes embedded software running in linux and PC software running in PC. The embedded software of the lower computer is developed by using the arm-linux-gcc cross-compiling environment, which mainly includes the raw data receiving module, the computing module, the data communication module and the calibration configuration module. The upper computer software is developed under Visual C. its main function is to communicate with the lower computer software, receive the operation data and state data of the lower computer software, and send the instructions of configuration parameters to the down computer software. Complete the configuration of the lower computer software parameters. Finally, according to the whole system software designed and developed, the external field test is carried out. The stability and normality of the whole system are verified under the conditions of different sensor layout, different vehicle models and different speeds.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U492.321
【共引文献】
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，本文编号：2165226
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