How Warner Land Surveys uses the Leica Nova TS60

Author: Andrew Griffin

华纳土地调查有限公司(Warner Surveys), founded1979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

The land and engineering surveying company uses a range of techniques and state-of-the-art measuring and positioning technology to ensure every project is carried out with precision, accuracy and the most cost-effective and safe survey solution. Warner Surveys’ go-to tool for project control network survey, verified ‘View Surveys’ and 3D movement monitoring is theLeica Nova TS60 – World’s most accurate total station。

“莱卡TS60仪器华纳调查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,”explains Hutson.

The examples below explain how using the TS60 Warner Surveys:

• Performed a control survey with the highest accuracy to verify the control point network guiding the redesign of the Kings Cross station in London;

• 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

各国正在适应和扩展其铁路系统，以动员不断增长的城市增长，并使经济继续前进 - 伦敦也不例外。

作为网络的一部分铁路数百万英镑的总结mme to upgrade the East Coast Main Line in the UK, London’s Kings Cross station aged infrastructure will be replaced and redesigned. The plans to review the station include re-laid the track in a new layout, with a disused tunnel being reopened, allowing for six tracks into the station instead of the current four.

Warner Surveys were commissioned in early 2019 to undertake the reinstatement and re-survey of the existing survey control point network on the Kings Cross Remodelling project. Surveying this railway line requires capturing data with the highest precision and standards in the shortest amount of time.

“由于这是一项铁路环境控制调查，需要非常高的准确性，因此我们立即选择了TS60进行所有遍历和控制点观测,” says Chris Gilks, Warner Surveys lead surveyor on Kings Cross Remodelling project.“It is the ideal choice for a large-scale control survey as it utilises the instrument’s strengths. 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.”

准确性是一个重要的好处，但这并不是使用TS60进行控制网络调查的唯一优点。在国王交叉重塑项目中，除了地面控制观测外，还需要验证和协调几个壁挂式棱镜。

“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,” explains Gilks.

This process can be very demanding on time, especially in the rail environment where access and time on site are at a premium.

“ TS60非常适合这项任务，因为其压电技术无尽的驱动器与标准电动驱动器相反。TS60的旋转速度的提高大大减少了观察到如此庞大的角度的时间，因此，进而提高了我们每小时的生产率，并最终降低了Warner Surveys和我们的客户的成本，”添加吉尔克斯。

Verified view surveys

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.

“The TS60, with its image capture capability, allows us to provide our clients with images of the recorded or surveyed reference points. It adds a telescopic image record of the point surveyed which facilitates post-processing and can be supplied to the client in order to confirm or prove the point surveyed,”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.

It is a commonplace now for refurbishment works to require that the existing façade is maintained, whilst the internal structure is demolished and rebuilt to suit a more modern design. In these instances, the appointed design/structural engineers may request the installation of a monitoring scheme to monitor a façade or structure with millimetre accuracy.

华纳的调查已使用TS60监视旧建筑物和立面，因为机器人总站可以确定其自己的位置和定向，并观察团队设定的控制点。

“When Warner Surveys begin the process of the setting 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,”总结说Warner Surveys监测经理Peter Pearson。