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