道路普查多传感器数据采集  

Multi-sensor data acquisition for road surveying

作　　者：陈小宇[1] 堵刚刚 向春玲 

机构地区：[1]华中师范大学物理科学与技术学院,武汉430079 [2]武汉海达数云技术有限公司,武汉430223

出　　处：《电子测量技术》2017年第8期174-179,共6页Electronic Measurement Technology

基　　金：华中师范大学基本科研业务费专项资金项目(CCNU16A02018)资助

摘　　要：设计了一种适用于道路普查需求的多传感器数据同步采集系统,以PIC24系列单片机为控制核心,结合GPS和高稳石英晶体建立高精度时间基准,利用加速度计和激光测距仪获取车辆在行进过程中垂直方向的加速度和对地距离,利用路面相机和景观相机采集路面和道路周边景观图像,并以时间作为纽带,实现了多个传感器数据高精度同步。测试结果表明,该系统实时性好、精度高、稳定可靠,能够实现道路路面及周边景观图像的实时同步采集,为道路路面裂缝检测及路面平整度解算提供高精度的原始传感器数据。A multi-sensor data synchronous acquisition system was designed for road survey. A PIC24 family microcontroller is used as the control core, combined with GPS and high stability quartz crystal to establish high- precision time reference. Accelerometer is used to acquire the acceleration, and laser range finder is used to acquire the distance in the vertical direction during vehicle travel. Road surface images can be collected by monochrome camera and road landscape images can be collected by color camera. Time is used as a link to achieve a high precision synchronization of multiple sensor data. Experiments show that the system has good real-time performance, high precision and stability. It can realize the synchronous acquisition of road pavement and landscape images. It provides high precision raw sensor data for road surface crack detection and pavement roughness calculation.

关 键 词：道路普查 GPS授时 激光测距 同步采集 

分 类 号：TN99[电子电信—信号与信息处理] TB22[电子电信—信息与通信工程]