高压输电设施巡检多旋翼无人机挂载相机的选用方法

摘要

高压输电设施的无人机巡检作业需要拍摄满足一定分辨率要求的航拍图片。特定分辨率要求的任务下，为无人机匹配最合适的相机需要对相机型号、焦距、拍摄距离等参数进行匹配实验。提出一种在地面即可完成的实验和相应的实验结果分析方法，对目标图样进行不同条件下的拍摄后发现与原有光学计算公式的不符之处，提出了有关最小分辨率尺寸的经验公式。通过分析山东、四川等地的实地基塔拍摄照片对拍摄结果进行了验证，为后续不同分辨率要求的工作中选相机提供了依据。%In the UAV ( unmanned aerial vehicle) inspection operation of high voltage power facilities, it is signif⁃icant to acquire aerial images that meet resolution requirements. In order to select a suitable camera for UAV in a specific task, we should find the best collocation among resolutions, sensor size and focal length. An experiment with its result analysis method is proposed. After discovered the difference between traditional formula and experi⁃mental data, the empirical formula is summed up. Through the inspection work in Shandong and Sichuan, the em⁃pirical formula is verified, which provides the basis for selecting the camera in the work of different resolution capa⁃bility requirements.