How Warner Land Surveys uses the Leica Nova TS60
Case study
作者：安德鲁·格里芬
华纳土地调查有限公司（华纳调查），建立1979年，是英国领先的土地和工程测量顾问之一。在40年历史上交付了超过11,000个单独的项目，Warner调查的重点一直是客户服务以及优质数据收集和交付。该公司努力成为“首选”提供商qualitysurveys. As the company evolved, it quickly developed both construction and industrial departments to support an evolving client base.
“From our roots as a small land survey company to where we are now, we continue to provide a consistent, cost-effective service to support our clients with comprehensive ‘end-to-end’ solutions for all their survey requirements, from project concept to completion,”Warner Surveys董事总经理David Hutson说。
三个应用程序，一个总站
土地和工程测量公司使用一系列技术和最先进的测量和定位技术来确保以精确，准确性和最具成本效益和最安全的调查解决方案进行每个项目。华纳调查的项目控制网络调查，经过验证的“查看调查”和3D运动监控的工具是Leica Nova TS60 – World’s most accurate total station.
“The Leica TS60 is the instrument Warner Surveys turn to for projects requiring an additional level of accuracy assurance. Being a 0.5-second instrument makes it ideal for manual monitoring schemes, and the surveying of large survey control point networks, particularly in the rail environment. We have also found an additional use for the TS60’s telescopic imaging capabilities in verified view surveys,”赫特森解释。
The examples below explain how using the TS60 Warner Surveys:
进行了最高精度的控制调查，以验证控制点网络指导伦敦国王十字架的重新设计；
Helps its clients visualise precisely how its new project or development will look like by providing surveys to produce ‘verified views’;
Movement monitoring schemes for the 3D monitoring of façades or old buildings.
Control network survey for Kings Cross Station remodelling project
Countries are adapting and expanding their railway systems to mobilise the increasing urban growth and keep the economy on the move – London is no exception.
作为升级英国东海岸主线的Network Rail的一部分，将更换并重新设计了伦敦的国王越野基础设施。审查该电台的计划包括在新布局中重新布置轨道，并重新打开了一条废弃的隧道，允许进入车站的六个轨道而不是当前四个轨道。
华纳的调查于2019年初进行了调查，以恢复和重新调查Kings Cross Repodeling项目现有的调查控制点网络。调查这条铁路线需要在最短的时间内以最高的精度和标准捕获数据。
“As this is a rail environment control survey, requiring a very high level of accuracy, we opted straight away for the TS60 to undertake all traversing and control point observations,” says Chris Gilks, Warner Surveys lead surveyor on Kings Cross Remodelling project.“这是大规模控制调查的理想选择，因为它利用了乐器的优势。The TS60 allows us to observe and record ‘rounds’ or ‘sets of angles’ to a 0.5 second horizontal and vertical accuracy, and as a result, provides quality data sets, which ensure we achieve the required accuracies necessary to meet demanding Network Rail standards.”
Accuracy is an important benefit, but this is not the only advantage of using the TS60 for control network surveys. During the Kings Cross Remodelling project, in addition to ground control observations, there is also a requirement to verify and coordinate several wall-mounted prisms.
“With projects such as this, with high numbers of targets, when utilising the Leica Captivate ‘Sets of Angles’ app, it was often necessary to observe 12 or more different ground and wall targets in face left and right for seven complete rounds. For example; for 12 targets this would equate to 168 control observations for a single set up，”吉尔克斯解释说。
This process can be very demanding on time, especially in the rail environment where access and time on site are at a premium.
“The TS60 is well suited to this task due to its Piezo technology endless drives as opposed to the standard motorised drives. The increased rotation speed of the TS60 significantly reduces the time to observe such large sets of angles so, in turn, increases our productivity per hour on-site and ultimately reduces costs for Warner Surveys and our client,”adds Gilks.
验证的视图调查
华纳调查一直是“经过验证”调查的长期提供商，以进行准确的视觉表示（AVR）。AVR，摄影图像准确地放置在新的开发项目中，建筑师和开发人员通常用于计划目的，以显示未来计划的外观。可以将照片准确地放置并渲染到3D模型中，以可视化潜在的站点，收集GPS和总站测量。
Warner Surveys provide its clients, or the company producing the AVRs, the survey data to facilitate 3D digital modelling. Experts survey and record a large range of photograph reference points and the camera locations to ensure a high level of accuracy. The surveyed data collected by the team is then imported into the client’s 3D digital model from which render images of a proposed scheme can be rendered.
“ TS60具有其图像捕获功能，使我们能够为客户提供记录或调查的参考点的图像。它添加了调查点的望远镜图像记录，该记录有助于后处理，并可以提供给客户以确认或证明所调查的点，”remarks James Wallace, senior surveyor at Warner Surveys.
3D movement monitoring
Accurate and reliable positioning on the status of structures is crucial to make fast and informed decisions and react to potential problems.
现在，翻新工程需要维护现有的立面，而内部结构被拆除和重建以适合更现代的设计，这是一个司空见惯的地方。在这些情况下，指定的设计/结构工程师可以要求安装监视方案，以以毫米精度监视立面或结构。
Warner Surveys has monitored old buildings and façades using the TS60, as the robotic total station can determine its own position and orientation observing the control points set by the team.
“当华纳调查开始的洞穴ing up one of these monitoring schemes we carry out three sets of angles observations to our reference control and to the monitoring targets over three set up positions for the base readings. The TS60 really comes into its element during this base reading set up due to its speed when turning between face left and face right, and when turning to observe the numerous monitoring points. The Piezo technology direct drives that turn the TS60 massively increase the speed at, which a monitoring scheme can be carried, which allows us to process and hand over results to the client quicker,”concludes Peter Pearson, monitoring manager at Warner Surveys.
