RILA Train Mounted Survey System, Opportunities & Constraints · 3 (Data) RILA is a suite of train mounted sensors Acquisition for rapid acquisition of survey data that negates the

RILA Train Mounted Survey System, Opportunities & Constraints

Trevor Burton UK Programme Manager – Fugro RailData

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RILA Train Mounted

Survey System,

Opportunities & Constraints

Trevor Burton Fugro RailData

UK Programme Manager

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(Data) Acquisition RILA is a suite of train mounted sensors

for rapid acquisition of survey data that negates the need for surveyors to be on or near the track in the acquisition of the data.

RILA survey data supports a range of topographical survey, gauging and infrastructure monitoring applications for asset management, maintenance and engineering design.

Analysis Advice Acquisition

Introduction

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2007 2013 2015 2018 Acquisition

Introduction

•  2007 2013/14 2017

•  RILA Track RILA 360 RILA v3.0

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Advice

Introduction

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Analysis Advice Acquisition Ana7/1lysis Advice Acquisition

Introduction

2013 RILA Track Trials – Wigan to Southport / Manchester Airport

2014 Project based trials – Settle to Carlisle/Carnforth

2015 Gt Western IEP, Norwich in 90, Midland Mainline Electrification, High Output Track Renewals Scotland

2016 Gt Western Route Modernisation, South Wales Electrification, Northern Hub, HOTR LNW, Western & Wales, Anglia and South East

2017/18 Wessex DMU, Crossrail, Transpennine Route Upgrade, MML, Basingstoke to Reading, Ad-hoc deliveries of existing data & onward processing.

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Introduction

Product Acceptance Received from NR Systems Review Panel in 2016 with 9 Safety Related Application conditions.

Reviewed & Updated in 2017 to include new system developments and 7 of the 9 SRACs closed.

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Introduction

NR Survey Standards

NR/L2/TRK/3100 Issue 4, December 2, 2017

Note 3 RILA Track+RILA 360 measurements are always correlated thereby improving the relative accuracy. When modelling objects (using multiple points from the point cloud) the relative accuracy between objects is +/-3mm in X,Y&Z.

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RILA Technology

RILA GPS and IMU

GPS 5Hz, IMU 300Hz

RILA 360 LiDAR Scanner

1Million pulses per second (400 scans each of 2500 pulses)

RILA Video System

3 lenses, 170° field of view

RILA Track Laser Vision Scanners

Static laser split by prism with camera 500Hz

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RILA Track Technology

x, y, z

l β

α

GPS 5 Hz, augmented with post processed RINEX data from CORS network

IMU 300 Hz

Laser Vision 500 Hz

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RILA is run 4 times over each track to ensure maximum track accuracy and compensate for small differences in GPS between measurement runs.

Running multiple times in both directions also densifies the LiDAR point cloud.

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RILA is run 4 times over each track to ensure maximum track accuracy and compensate for small differences in GPS between measurement runs.

Running multiple times in both directions also densifies the LiDAR point cloud.

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RILA 360 Technology

RILA 360 laser operates simultaneously with the track system and scans objects and features within the rail corridor in a “what you see is what you get mode” As data is captured multiple times in both directions there are very few occluded or shadowed areas.

Complex algorithms combine the various individual runs into a single homogenous cloud.

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RILA 360 Technology

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RILA Video Technology

RILA is also equipped with an integrated video system.

Video is acquired from a three lens camera array with a 170 degree field of view. The video is georeferenced and can be viewed in most media players, via an on-line portal or stored as individual JPGs with associated world reference files.

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RILA Video Technology

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RILA Data Applications

RILA is routinely used as a source for topographical survey. RILA track strings are produced from the track data while objects, structures and lineside features can be extracted from the point cloud.

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RILA can be used for 6ft passing clearance analysis and structure gauging. NGD compliant SC0 and SCX files being the standard deliverable product.

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RILA is currently awaiting approval for platform gauging but can be used to determine Heights and Staggers and measurement of OLE components.

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RILA Deployment

RILA can be mounted to dedicated locomotives or on the rear of an in-service passenger service, with the equipment being loaded in less than 2 minutes at terminus stations during turnarounds.

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RILA Deployment

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RILA Deployment

RILA can be mounted to a range of different rolling stock using custom designed coupler adaptors or to buffered trains via a universal buffer adaptor.

Two RILA technicians travel with the equipment in the rear train cab.

A RILA Designated Person communicates with signalers and train crew

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Advice

RILA Opportunities

•  Clearly defined health and safety benefit •  No possessions or track access required

in the collection of data •  Thousands of track man-hours saved •  Survey entire routes in days •  Collect whole route data and process as

required •  Survey once and use for many different

projects/applications •  Can be mounted to a range of locos and

passenger services •  Assigned NR Band 1A accuracy

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Analysis Advice Acquisition Advice Acquisition

RILA Constraints & Potential Mitigation

Coverage / Completeness •  GPS loss in tunnels, deep cuttings and in

urban corridors – supplement with ground control (targets, spheres on spigots etc) or tie in to recent ground topo

•  Train pathing – on passenger services at the mercy of the paths given to particular services. Loss of data at stations with multiple platforms. Unlikely to record loops, sidings etc. – supplement where necessary with other sources of data (drones, static laser scanning, road/rail or trolley based mobile mapping systems.

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Weather •  Impossible to survey with lying snow.

Potential loss of data in heavy rain. Excessive low sun comprises photogrammetric measurement of Track data introduction of blue lasers

Network Operational Issues •  TOC and Union matters – established

procedures and track record •  Perceived risk to timetable – if turnaround

tight, wait for next service

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Data Handling •  Huge data volumes – Gt Western regional

project 40Tb – store/share in the cloud, deliver/access via web portal. Consider format choices and products carefully.

•  Typical project – point cloud as .LAS &.POD output as OSGB and Snakegrid

•  Video as individual .JPG frames and as MPEG,

•  DGN, CSV of rail strings, wire runs •  DGN of topographical survey •  SC0/SCX/SCP gauging files

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Conclusion

RILA can supply clearly defined benefits: •  Speed of Acquisition •  Health and Safety through removal of survey personnel

from the track •  Data that can be used for range of asset management

and design applications •  Mode of acquisition promotes capture once and use

many times ethos. Constraints need to be managed accordingly: •  Relatively small areas of occluded or substandard data

compared with track length captured. •  Operational issues ever present but diminishing with

experience and track record •  Survey specifications need to be prepared with

consideration to potential data volumes.

We are Fugro

For more information, please contact: Trevor Burton [email protected] fugro.com/raildata

Q&A

RILA Train Mounted Survey System, Opportunities & Constraints

Trevor Burton UK Programme Manager – Fugro RailData

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RILA Train Mounted Survey System, Opportunities & Constraints · 3 (Data) RILA is a suite of train mounted sensors Acquisition for rapid acquisition of survey data that negates the