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道路平整度检测多源数据高精度同步采集
电子技术应用
陈小宇,陈雪磊
华中师范大学 物理科学与技术学院,湖北 武汉 430079
摘要: 随着使用年限增加,道路出现了不平整等路面损坏情况,急需一种快速、有效的道路平整度检测设备对道路进行检测。设计了一种道路平整度检测多传感器数据同步采集系统,以FPGA为控制核心,利用GPS输出的NEMA数据和高稳晶振建立高精度的时间基准,采用A/D采样的方式进行同步数据采集。为提高系统的抗干扰能力和数据采样的精度,传感器信号调理电路采用差分放大和抗混叠滤波设计。实验结果表明,该系统完成了多传感器数据高精度同步采集,时间同步精度为微秒级,能够为评价路面平整度提供高精度原始数据,具有数据采样精度高、稳定性好、抗干扰能力强、成本低等优点,已在武汉夕睿光电技术有限公司的道路检测车上得到成功应用。
中图分类号:TN709;TH761 文献标志码:A DOI: 10.16157/j.issn.0258-7998.234085
中文引用格式: 陈小宇,陈雪磊. 道路平整度检测多源数据高精度同步采集[J]. 电子技术应用,2024,50(2):117-123.
英文引用格式: Chen Xiaoyu,Chen Xuelei. High precision synchronous acquisition of multi-source data for road roughness detection[J]. Application of Electronic Technique,2024,50(2):117-123.
High precision synchronous acquisition of multi-source data for road roughness detection
Chen Xiaoyu,Chen Xuelei
College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China
Abstract: With the increase in usage years, road surface damage such as unevenness occurs, and fast and effective road roughness detection equipment is urgently needed to detect the road. In this paper, we design a multi-sensor data synchronization acquisition system for road roughness detection, with FPGA as the control core, using NEMA data output from GPS and high stability crystal to establish a high-precision time reference, and using A/D sampling to synchronize data acquisition of 4 sensors. To improve the anti-interference capability and data sampling accuracy of the system, the sensor signal conditioning circuit is designed with differential amplification and anti-alias filtering. The experimental results show that the system completes the multi-sensor data synchronization acquisition with high precision, the time synchronization accuracy is microsecond level, can provide high precision raw data for evaluating the road roughness, has the advantages of high data sampling accuracy, good stability, strong anti-interference ability, low cost, etc., and has been successfully applied to the road detection vehicle of Wuhan XROE Co., ltd.
Key words : road roughness detection;synchronization acquisition;FPGA;multi-sensor

引言

随着社会进步和经济发展,我国的公路交通事业得到了极大的发展[1]。截止到2021年末全国公路总里程达528.07万公里,比上年末增加8.26万公里[2-3]。随着我国公路里程的逐年增长,道路检测工作也变得日益繁重。平整度是评价路面质量及路面施工验收中最重要的指标之一,占总体评价指标的15%~20%[4-5]。


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作者信息:

陈小宇,陈雪磊

华中师范大学 物理科学与技术学院,湖北 武汉 430079


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