RenowacjaZłoêMonychstruktur ZapomocąSkanowanialaserowego 3D

坦帕/佛罗里达州一家废水处理厂的项目工程师面临着具有挑战性的翻新 - 拆除了其中一个泵房，并取代了该工厂消化者中的管道。虽然现有的二维图纸记录了管道，但它们并未包含计划重建所需的细节级别，以保证新安装的方式不会与现有结构发生冲突。

项目工程师及其团队需要对彼此缠绕，更改高程并在各种植物结构中缠绕的管道迷宫进行彻底了解。为了评估水箱的容量，他们需要在水箱内进行测量，其中包括将填充线代表到水箱的最高部分，以及水在塔中退出的点。最后，他们想要一个整体场地计划，展示建筑足迹及其彼此之间的关系。该文档将帮助他们了解水流的动态，确定消化器能力，在水塔中建立联系点，并就植物的修复做出明智的决定。

点云，3D可视化和模型提供了关于管道和阀门复杂网络的宝贵见解。

手动完成文档不仅很复杂，而且可能很危险。首先，由于水塔高53米（175英尺），因此很难进入。此外，在对废水消化器进行手动测量时，存在掉落和溺水的风险，这些消化剂是用于稳定处理过程中从废水中去除的固体的开放式桶。

Manual documentation would also be time consuming due to the complexity as well as the logistics of manoeuvring around the plant and, for example, negotiating catwalks that narrow to about 41 cm (16 in) wide in some places. It probably would have taken a team of four engineers around two weeks to take measurements, and they still would have only been able to gather a bare minimum of data.

从困难，危险到简单且安全，并通过激光扫描
The project engineer realised that laser scanning could be the solution to their problem. After searching for service providers, he contacted Ryan Hacker, president of TruePoint Laser Scanning. Because laser scanners methodically and quickly capture data points that represent all objects within their range, they could easily capture the complex piping and plant layout. In addition, since the True-Point Laser Scanning team chose to use the Leica ScanStation C10, they were able to document buildings and structures accurately within a 300 metre (980 feet) range while capturing thousands of data points in a second. This long-range capability meant the technicians could safely scan the interior walls of digesters from the catwalks and record the water tower from the ground, eliminating the need for man lifts and repelling equipment.

Two TruePoint technicians determined that they needed to take scans in thirty-six locations. Laser scanning captures everything in line of sight. To assure thorough documentation, however, they took scans from multiple angles. Each scan represented a fragment of the puzzle that TruePoint associates would later piece together. While the project engineer had originally planned a multi-phased project in order to continue operations while replacing specific pipes and valves, TruePoint was able to complete the data collection in a day. The quick process also saved money by reducing the need for several documentation projects. In addition, because all the data was available immediately, engineers could make a full plan that reduced the need for future change orders. The scans produced a series of point clouds, threedimensional data sets that represent the scanned objects at the facility. Back at TruePoint’s headquarters, the workflow fell into an easy rhythm as the team imported the multiple point clouds into Leica Cyclone software. Then, to gain a complete view of the plant they assembled the puzzle, registering the point clouds and joining them into a single data set. They sent the 3D representation to the engineers at the water treatment plant who also use Leica Cyclone software. The engineers imported the point clouds into their Autodesk AutoCAD software to create a model. In addition, TruePoint provided Leica TruViews that give a panoramic 3D view of the scanned area. The TruViews are intuitive for people to use; they can easily zoom in to see points of interest and look at them from all angles.

Taking measurements and analysing the data in the office
工程师能够从办公室舒适的情况下仔细检查数据，并计算因管道，水流和特定测量值的必要升高。将所有数据触手可及，使他们能够为制造商提供所需的新管道的确切尺寸和形状。一旦收到管道，他们在现场要做的就是组装。因此，他们节省了手动劳动时间。结果，水处理厂的工程师能够更准确，全面地计划其翻新工程，提高安全性，降低成本并更快地实现目标。由于该项目的成功，项目经理现在已将激光扫描纳入其他项目。

布鲁斯·鲍迪奇（Bruce Bowditch）撰写