- RailMapper
- Specifications
- Photos
- Highlights
RailMapper - Mobile Mapping System for Rails
Based on the world's most accurate mobile mapping system, StreetMapper, the new RailMapper system is applicable for clearance measurement, sign detection, new construction, refurbishment and monitoring of rails and tunnels.
IGI with its partners designed this new system and established a complete solution with related workflow. By using the unique modularity of IGI equipment, one mobile mapping system can be used for various tasks and applications. Using the very latest laser scanning technology, precision navigation and advanced data processing coupled with innovative system design, RailMapper delivers proven accuracies in the most challenging environments.
The system can be equipped with different types of laser scanners which differ in prescision and range. A typical solution comprises of 2 to 3 scanners to get the best possible results. In addition different kind of RGB and video cameras for integration are available. Also the DigiTHERM sensor is compliant to deliver digital thermal imagery.
Precise Geo-Referencing - the heart of the system
The onboard navigation system includes a high end Global Navigation Satellite System (GNSS) receiver, a fibre optic gyro-based Inertial Measurement Unit (IMU) and the latest Direct Inertial Aiding Plus (DIA+) to assist in areas of poor GPS/GLONASS reception. RailMapper is the only system on the market to offer this level of precision navigation.
Based on IGI's Modular System Concept parts of the system can be exchanged into compliant land or air based systems. At the heart of nearly every precise system is its TERRAcontrol/AEROcontrol unit which can be used for terrestrial and airborne missions in order to be flexible and cost-saving. The photo to the right shows a TERRAcontrol unit. The small black Sensor Management Units (SMU) are interchangleable to other system solutions as StreetMapper or LiteMapper.
Please have a look at the Youtube video for an introduction:
Deliverables
An inherent feature of LiDAR data is that it is acquired, processed and delivered in a digital format, making it very easy to work with and to create data products that meet a wide range of needs. Immediately after the survey the data is processed to provide point data with XYZ position and reflective intensity. Depending upon the customer's requirements, the data can be processed and analysed further:
- Classification of laser data (for example ground, vegetation, buildings, wires)
- Vectorisation of laser data
- Measurement of objects
- 3D-Visualizations of surveying area
- Automatic track identification
- Automatic data processing for clearance measurement profiles, EN 15273-1 compliant
- Set-actual comparison of data sets
- Collision tests and passing simulations
- Semiautomatic modelling of power lines
Ease of Use
RailMapper has dedicated control touch-screens that show status information and allows the data capture parameters to be adjusted. Operations that require a higher level of skill - such as GNSS processing - are undertaken post-mission using sophisticated software for processing the collected navigation data, laser survey measurements and camera, thermal or video images.
Application sample images:
Results - Coloured Point Cloud
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Results - Classified Point Cloud
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Application - Automatic Clearance Measurement
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Application - Automatic Clearance Measurement with SiRailScan
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Application - Track Spacing
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Application - Banking
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Specifications Laser Scanner
| Laser Scanner VQ250T - highest precision up to 30m |
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| Pulse Repetition Rate | 300 kHz |
| Effective Measurement Rate | 300 kHz |
| Min. Range | 1.5 m |
| Max. Range (natural targets ρ ≥ 10%) | 30 m |
| Accuracy | 6 mm |
| Repeatability | 4 mm |
| Scanning angle | 360° |
| Scanning rate | 100 scans/sec |
| Number of targets per pulse | Unlimited |
| Angular resolution | 0.009° |
| Angular accuracy | 0.001° |
| Eye-safety | Class 1 eye-safe |
| Beam divergence | 0.3 mrad |
| Dimension (l x w x h) | 376 x 192 x 218 mm |
| Weight | 11 kg |
| Operating temperature | -10°C to +40°C |
| Protection class | IP64 |
| Laser Scanner VQ250 - high precision up to 300m | |
| Pulse Repetition Rate | 300 kHz |
| Effective Measurement Rate | 300 kHz |
| Min. Range | 1.5 m |
| Max. Range (reflectivity ρ ≥ 80%) | 200 - 500 m |
| Accuracy | 10 mm |
| Repeatability | 5 mm |
| Scanning angle | 360° |
| Scanning rate | 100 scans/sec |
| Number of targets per pulse | Unlimited |
| Angular resolution | 0.009° |
| Angular accuracy | 0.001° |
| Eye-safety | Class 1 eye-safe |
| Beam divergence | 0.3 mrad |
| Dimension (l x w x h) | 376 x 192 x 218 mm |
| Weight | 11 kg |
| Operating temperature | -10°C to +40°C |
| Protection class | IP64 |
| Laser Scanner VQ450 - densest point cloud up to 200m | |
| Pulse Repetition Rate | 550 kHz |
| Effective Measurement Rate | 550 kHz |
| Min. Range | 1.5 m |
| Max. Range (reflectivity ρ ≥ 80%) | 200 - 800 m |
| Accuracy | 8 mm |
| Repeatability | 5 mm |
| Scanning angle | 360° |
| Scanning rate | 200 scans/sec |
| Number of targets per pulse | Unlimited |
| Angular resolution | 0.009° |
| Angular accuracy | 0.001° |
| Eye-safety | Class 1 eye-safe |
| Beam divergence | 0.3 mrad |
| Dimension (l x w x h) | 377 x 205.5 x 218 mm |
| Weight | 12.5 kg |
| Operating temperature | -10°C to +40°C |
| Protection class | IP64 |
Average Point Density
| Average Point Density (pts/m² @ 5m range) |
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| 25 kph | 30 kph | 60 kph | 80 kph | 100 kph | |
| Based on one VQ250 |
1375 | 860 | 573 | 430 | 344 |
RailMapper product photos:
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RailMapper system installation on tower railcar TVT-700
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RailMapper system installation on tower railcar DVT-701
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RailMapper system installation on tram in Helsinki
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Results - Coloured Point Cloud
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Results - Classified Point Cloud
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Application - Automatic Clearance Measurement
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Application - Automatic Clearance Measurement with SiRailScan
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Application - Track Spacing
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Application - Banking
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Highlights
- Rail survey with automatic clearance measurement (EN 15273-1 compliant)
- Control of construction progress (set-actual comparison)
- Sign detection & tunnel profile measurement
- 3D-Visualizations of surveying area
- Semiautomatic modelling of power lines
- Collision tests and passing simulations
- 360° Field of View
- Up to 550 kHz effective measurement rate
- 1,400,000 3D points per second whilst in motion
- Up to 800 m scanning range
- Optical Odometer to achieve best results
- Graphical user interface with touch-screen
- Precise Navigation using TerraControl with DIA+
- Rapid mapping during traffic
- Flexible deployment because part of IGI's Modular System Concept. Parts of the system can be reused in StreetMapper or LiteMapper installations.