Presentation outlining GIS / Mobility Solution (PoC) at Tube Lines (part of London Underground). by Steven Eglinton

1. Location-Aware
Asset Management
Steven Eglinton
Geospatial Information Manager
Tube Lines
March 2011

2. The Challenge
1) “Improve precision of track fault locations”
2) “Reduce work bank from identifying
duplicate faults”
Required criteria for solution:
• Enable workforce to resolve to 1m track location
• Create consistent & validated inspection data
• Ensure output is machine-readable
• Provide easy-to-use solution/tool for the above

3. Location – We think in a line
• To define where we are on the track – need a
coding system
( Legacy system specified by London
Underground)
• N124 = unique area code
• N = northern line
• EB = eastbound track
• LO = local track
• 101 = 101 metres along track in direction from start of an area

4. Mobility
• Location Acuracy to +/- 0.3m
• > 60% of network is above ground
Screenshots from GNSS device

5. Phase 1
Phase 2
Phase 3

7. GIS Mapping Solutions – GRS-1 Precision was
Versitility carefully considered
and is fit for purpose
– track inspections
GPRS
GPRS
GRS-1 + PG-A1 GRS-1 GRS-1 GRS-1
GRS-1 + PG-A1
w/ NTRIP w/ NTRIP w/external w/ EGNOS
w/ RH-1 Radio
corrections for corrections GG Beacon receiver
for GGD
GGD
Premises / bridge inspections
DM +/-0.30m SubMeter M
CM
track inspections

8. GRS-1
Advanced digital RTK Dual Integrated Barcode
imaging constellation Reader
tracking L1+L2
806 MHz XScale Internal Magnetic Internal GSM Modem RH-1 Radio Pack
Processor Compass 1GB internal memory
Windows Mobile WiFi

9. TopNet
Standard GRS-1 with Data SIM
DGNSS Topcon’s Network correction service
GPS and Glonass
DGNSS 10-30 cm

10. Benefits of Location-aware Asset Management
• Consistent data
• Easy fault documentation
• Validated data
• Time saving
• Integrated
• No post-processing • Designed for Non-Surveyors

11. Contact
Steven Eglinton
Geospatial Information Manager (2007-2011)
Tube Lines
Present:
Director, GeoEnable
Director/Council Member, AGI