对空中进行测量和检查

无人机 - 无人机 - 现在在许多测量领域都使用。这不仅限于土地调查，还包括开放式矿山，垃圾填埋场和道路或建筑物。此外，这些多功能的小飞机为更有效地管理主要建筑工地提供了全新的可能性。在建造工作甚至开始之前，他们可以提供快速，低成本的空中概述，并生成准确而有意义的数据，以进行计算和报价。一旦开始建造工作，无人机拍摄的航空照片提供了临时步骤的常规纪录片记录。除了使监视施工进度变得更加容易外，它还促进了内部流程的控制。一旦建设工作完成，无人机对建筑物进行检查并提供证据表明该工作已按照商定和加快最终认可进行的证据。

The Swiss power company Axpo is using the UAV Aibot X6 to survey and document the major construction project “Linthal 2015” in the Glarus Alps region. In an initial step, the entire Linthal valley was surveyed from the air and a point cloud with an accuracy of up to one centimetre (0.4 inch) was generated. This data will now form the basis for planning subsequent steps of the construction process.

瑞士电力公司AXPO正在Glarus的广州建造一个新的地下抽水储存厂（该国最大的）。将来，该工厂将保证未来向瑞士东北部和中部的电力供应。该计划是为了使工厂从林默湖（Limmernsee）湖中抽水到穆特塞湖（Lake Muttsee） - 海拔630米（2,070英尺）的高度差异 - 在需要时，它可以在需要时再次发电。这个大规模项目涉及约18.5亿美元（17亿欧元）的投资成本，预计将在五年中完成最佳的工作，将在各个建筑工地雇用多达500名员工。该工厂应在2016年初开始发电。

快速，灵活的数据收集
Hundreds of thousands of cubic metres of soil and rock will have to be removed to build the tunnels and caverns for the pumped storage plant. Most of this spoil will be transported to the Muttenalp mountain by cable car and used to build the dam, which will be more than a kilometre long and rise to a maximum height of 36 metres (118 feet). The rest of the material will be deposited in front of the existing Limmern dam. In October 2014, Axpo used the Aibot X6 for the first time to survey this area, which is known as the Limmerntobel Inert Matter Disposal Site. Because the surrounding mountains blocked satellite signal reception, the aircraft was flown manually without GPS navigation. Photographs of the terrain were taken at a vertical angle during the flight to create high-resolution images of the disposal site with a 60 % to 90 % overlap. Before the flight, 14 ground control points were plotted evenly in a distance of approximately 50 to 80 meters (160 to 260 feet) in seven corners of the surveyed area for subsequent geo-referencing of the images. “This was the first time the Aibot X6 had been deployed at an altitude of 2,000 metres (6,562 feet), but the rarefied atmosphere had no adverse effects on its flight characteristics," explains pilot Robert Lautenschlager.

The 50,000 square metres (12.5 acres) of land was surveyed in two flights lasting ten minutes each. Agisoft photogrammetry software was used to process the data collected and a precise point cloud with an accuracy of up to one centimetre (0.4 inch) was generated. The whole evaluation processed lasted about 120 minutes. The point cloud was then integrated in the local coordinate system of the construction site, enabling Axpo’s surveyors to calculate the volume of the deposited material.

以前使用悬挂直升机的外部拍摄系统创建了处置地点的定期摄影记录。不仅可以使用AIBOT X6在短时间内记录高精度地理数据，而且还可以创建施工工作当前状态的完整和无缝文档。在任何给定的时刻，无人机都可以为承包商立即概述建筑物的发展方式，从而帮助他们更好地计划和控制流程。

测量和检查的结合
The use of UAVs means that surveying and inspecting tasks can now be combined more and more frequently. The Axpo example is a perfect illustration of this: in future, the company intends to use the Aibot X6 not only for the creation of digital models of terrain for planning and building power plants, but also for vital inspection tasks. It will be possible to fly over existing dams and take photographs that will allow the condition of the concrete surfaces on the airside and waterside of the dam to be assessed in detail. In this case, the hexacopter will again be fitted with a digital camera and flown to locations where it will take high-resolution pictures of all critical areas, thus enabling even the smallest cracks and other anomalies to be detected.

AIBOT X6也可用于检查电塔。Hexacopter在这里提供了许多优势，例如在发生故障或缺陷的情况下，部署的灵活性和可用性。由于检查是由遥控飞机执行的，因此它比直升机或尖顶的检查更安全，更便宜，因为甚至没有必要事先关闭电流。将来，AXPO还将依靠环境部门的无人空降帮助，在这里，无人机将用于拍摄山流的照片，作为残留水实验的一部分。

Written by Friederike Nielsen and Robert Lautenschlager