激光探针扫描系统结构设计

发布时间：2018-07-03 18:04

本文选题：三维激光扫描 + 激光成像　；参考：《长春理工大学》2015年硕士论文

【摘要】：本文首先对三维激光扫描技术与激光探测成像相关理论进行研究总结,并以此为理论依据,提出一套激光探针扫描系统结构设计的方案。激光探针扫描系统结构主要包括三个部分:激光测距部分、机械扫描部分、数据采集处理部分。其中激光测距部分主要利用高频率激光测距仪对目标外形的距离信息进行测量并获得大量点云数据。机械扫描部分包括高速转台、高速转镜等相关结构设计,以实现整套系统按照设计方案中的扫描轨迹对目标进行三维激光扫描。数据处理部分主要以FPGA硬件与LabVIEW软件为设计核心,可以对激光测距仪采集到的目标距离点云数据进行高速准确处理并通过对点云数据的拟合计算,建立目标的三维模型,实现了激光扫描成像。激光探针扫描系统通过激光测距仪同高速转台、高速转镜等结构间的相互配合使得整个系统能够实现快速连续的三维激光扫描,并且通过对系统中相关机械结构的设计解决了扫描系统中机械系统响应频率与测距脉冲频率不匹配的问题,提高了高频率脉冲激光的测距扫描效率。
[Abstract]:In this paper, the theory of 3D laser scanning and laser probe imaging is studied and summarized, and based on this theory, a scheme of structural design of laser probe scanning system is put forward. The laser probe scanning system consists of three parts: laser ranging, mechanical scanning, data acquisition and processing. The laser ranging part mainly uses the high frequency laser rangefinder to measure the distance information of the target shape and obtain a lot of point cloud data. The mechanical scanning part includes the structure design of high speed turntable, high speed rotating mirror and so on, in order to realize the 3D laser scanning of the target according to the scanning track of the whole system. In the part of data processing, the FPGA hardware and LabVIEW software are used as the core of the design. The target distance point cloud data collected by the laser rangefinder can be processed at high speed and accurately, and the 3D model of the target can be established by fitting and calculating the point cloud data. Laser scanning imaging is realized. The laser probe scanning system enables the whole system to realize the rapid and continuous 3D laser scanning through the cooperation of the laser rangefinder with the high-speed turntable, high-speed rotating mirror and other structures. The problem of the mismatch between the response frequency and the ranging pulse frequency of the mechanical system is solved by the design of the related mechanical structure in the system, and the scanning efficiency of the high frequency pulsed laser ranging is improved.
【学位授予单位】：长春理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TN249

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