Location-Aware Asset Management Steven Eglinton Geospatial Information Manager Tube Lines March 2011
May 24, 2015
Location-Aware Asset Management
Steven Eglinton
Geospatial Information Manager
Tube Lines
March 2011
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
• 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
Location – We think in a line
Mobility• Location Acuracy to +/- 0.3m• > 60% of network is above ground
Screenshots from GNSS device
Phase 1
Phase 3
Phase 2
GIS Mapping Solutions – GRS-1 Versitility
M
GRS-1 w/ EGNOS
SubMeter
GRS-1w/external Beacon receiver
GRS-1 + PG-A1w/ RH-1 Radio for GGD
DM +/-0.30m
GRS-1w/ NTRIP corrections GG
GPRS
CM
GRS-1 + PG-A1w/ NTRIP corrections for GGD
GPRS
Precision was carefully considered and is fit for purpose – track inspections
track inspections
Premises / bridge inspections
806 MHz XScale ProcessorWindows Mobile
Internal Magnetic Compass
Internal GSM Modem1GB internal memoryWiFi
Integrated Barcode Reader
RTK Dual constellation tracking L1+L2
RH-1 Radio Pack
Advanced digital imaging
GRS-1
Standard GRS-1 with Data SIM
Topcon’s Network correction service
GPS and Glonass
DGNSS 10-30 cm
TopNet DGNSS
Benefits of Location-aware Asset Management
• Easy fault documentation
• Time saving
• Designed for Non-Surveyors
• Consistent data
• Validated data
• Integrated
• No post-processing
Contact
Steven Eglinton
Geospatial Information Manager (2007-2011)
Tube Lines
Present:
Director, GeoEnable
Director/Council Member, AGI