车载式路面平整度及构造深度检测系统设计与实现

发布时间：2018-01-13 10:43

本文关键词：车载式路面平整度及构造深度检测系统设计与实现　出处：《长安大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着我国国家公路网的快速发展和日渐完善，使得与之相关的路面检测领域的相关技术也急需发展。路面平整度及构造深度是影响车辆行驶质量和安全性的重要因素，也是公路施工过程中和后期养护管理的重要评测指标，所以设计一种高效、精确、操作简便的路面平整度及构造深度检测设备是一项意义重大的任务。因此，本文进行了车载式平整度及构造深度检测系统的设计和研究。通过查阅大量的相关文献，了解了国内外路面平整度及构造深度检测技术发展现状，研究了各种检测技术的基本原理。构建了基于激光位移传感器和双加速度计的车载式路面平整度及构造深度检测系统。主要研究内容如下： 1、简要阐述了路面平整度及构造深度检测领域的国内外发展现状以及发展方向。研究分析了平整度及构造深度的各种评价指标，研究了国际平整度指数IRI的计算模型和计算方法，按照国家规定使用国际平整度指数IRI和平均断面深度MPD作为本系统的检测输出指标，并围绕这两项指标进行了具体的研究工作。 2、研究分析了系统所需要的各种传感器的工作原理，确定了系统对传感器、采集卡和工控机的性能要求，并最终选择了能满足设计要求的各部分器件，确定了系统的结构和安装方式。对系统的软件部分进行了算法研究，主要分析了加速度信号的二次积分、去除直流项等，以及对加速度信号和激光位移信号的滤波等过程。 3、进行标定试验和实际道路试验，，对用到的激光位移传感器、加速度计、增量式旋转编码器等传感器进行了标定实验，修正了传感器的测量结果。设计进行了车载式路面平整度及构造深度检测系统与标准检测的相关性试验，检测系统的重复性试验以及行驶车速对检测结果的影响性试验。实验结果表明，本文设计平整度及构造深度检测系统性能稳定、可靠，能够作为实际道路路面平整度及构造深度检测系统进行路面检测。
[Abstract]:With the rapid development and improvement of the national highway network in China. It is urgent to develop the related technologies in the field of pavement detection. Pavement smoothness and construction depth are the important factors that affect the driving quality and safety of vehicles. It is also an important index of maintenance management in the course of highway construction, so it is a significant task to design an efficient, accurate and easy to operate pavement smoothness and construction depth detection equipment. In this paper, the design and research of vehicle-borne flatness and structural depth detection system are carried out. Through consulting a large number of relevant documents, understand the domestic and foreign pavement smoothness and structural depth detection technology development status. The basic principles of various detection techniques are studied. A vehicle-borne pavement roughness and construction depth detection system based on laser displacement sensor and dual accelerometer is constructed. The main contents are as follows: 1. The development status and development direction of pavement smoothness and structural depth detection at home and abroad are briefly described, and various evaluation indexes of smoothness and structural depth are studied and analyzed. The calculation model and method of international smoothness index (IRI) are studied. According to the national regulations, the international smoothness index (IRI) and the average section depth (MPD) are used as the output indicators of the system. And carried on the concrete research work around these two indexes. 2. The working principle of all kinds of sensors needed by the system is studied and analyzed, and the performance requirements of the system for sensors, data acquisition cards and industrial control computers are determined. Finally, the components that can meet the design requirements are selected. The structure and installation mode of the system are determined. The algorithm of the software part of the system is studied. The secondary integration of acceleration signal and the removal of DC term are mainly analyzed. And the process of filtering acceleration signal and laser displacement signal. 3. Calibration experiments and actual road tests are carried out. The laser displacement sensors, accelerometers, incremental rotary encoders and other sensors are calibrated. The measurement results of the sensor are corrected. The correlation test between the vehicle mounted pavement flatness and the structural depth detection system and the standard detection is carried out. The repeatability test of testing system and the influence test of driving speed on the test results. The experimental results show that the performance of the system designed in this paper is stable and reliable. It can be used as an actual pavement roughness and structural depth detection system for pavement detection.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U416.0;U412.2

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