3D PAVEMENT PROFILING WITH LCMS
The ROMDAS LCMS module is one of the most advanced multifunctional devices for measuring pavement condition. The LCMS is connected to a central ROMDAS system and controlled by the ROMDAS Acquisition Software. It uses high speed cameras, 2 laser line projectors from Pavemetrics and advanced optics to acquire high resolution 3D profiles of the road surface.
LCMS records more than 5,000 full 4 m wide profiles per second while travelling at normal traffic speeds. The high frequency of profiles allow for automatic identification of a range of critical pavement attributes.
It’s custom optics and high-power scanning lasers mean the system is unaffected by light conditions and can operate in full daylight or night-time.
A single sensor module, LCMS-4M is a an ideal budget solution for pavement condition data collection to meet specific data needs and project network length. This LCMS-4M sensor unit uses the LCMS technology and is a fully automated solution integrated with ROMDAS Acquisition Software to collect the required pavement condition data.
The “4M” here denotes the 4m lane width it covers even with a single sensor to create high resolution 3D road profiles. LCMS-4M automatically detects and quantifies select pavement condition defects such as cracking (including sealed), rutting, potholes, patches, pavement markings, and manholes and storm drains. It fully complies with industry best practice for pavement condition rating of one pass per direction to provide industry standard condition ratings according to the PASER and PSCI standards.
PROFILE ANALYSIS
Thanks to the exceptionally accurate transverse profiles, scan frequency and analysis algorithms, the LCMS is capable of automatically calculating datasets like:
Cracking (including, width, depth, length, type and even sealed cracks),
Rut depth, width and cross-sectional area,
MPD Macro-texture,
Pavement Type and Marking detection,
Edge drop-off and curb detection,
Ravelling detection,
Bleeding,
Pothole and Delamination detection,
Shoving,
Concrete joints and faulting,
Water pooling depths,
Sewer and storm-drain detection ,
Pavement images automatically overlaid with defects.
Upgrades available also enable the collection of:
Longitudinal profiles and roughness (IRI),
Road geometry (slope, cross-fall, radius of curvature, super elevation),
Airport Foreign Object and Debris (FOD) detection.
Terrain mapping for CAD
The LCMS is ideal for network level surveys or for customers who require the high accuracy and variety of data needed to manage modern roads.
100x the typical resolution of mobile LiDAR
Automated cracking, rutting, potholes, manholes and more
1-10 PASER rating protocol output
95%+ repeatability
High-resolution images with distresses
ESRI SHP le output
Sampling Rate
28,000 Hz (profiles per second)
Vertical resolution
+/- 0.10 mm
Laser Type Classification
Class 4
Laser Safety Classification (Complete System)
Class 1 (as defined in IEC 60825-1:2014)
Outputs
Standard outputs:
Cracking (Longitudinal, transverse, alligator, multiple, sealed cracks),
Rut depth, width & cross-sectional area for each wheel path,
Macro-texture (MPD, MTD) across whole lane width in 5 AASHTO band,
Potholes & Delamination,
Edge drop-off and curb detection,
Pavement type detection,
Pavement marking detection,
Raveling,
Bleeding,
Shoving,
Concrete joint/faulting,
Water pooling,
Sewer and storm –drain,Geotagged Pavement images (.JPEG).
Survey Speed
Up To 100 Km/h
Transverse Range
4m nominal (4160 points per profile)
Output File Format
Microsoft Access Files, JPEG Image files with Defect Overlay.
Environmental Protection
IP—65 (NEMA 4)
Power Consumption
150 Watts (240 VAC)
Applicable standards
ASTM E950, ASTM E965, ASTM E1703, ASTM E1845, ASTM E1926, ASTM D5340, ASTM D6433, AASHTO PP37, AASHTO PP38, AASHTO PP67, AASHTO PP68, AASHTO PP69, AASHTO PP70, AASHTO R56, AASHTO R85, AASHTO R86, AUSTROADS Guidelines (where applicable), ISO 13473, NCAT Profiler Certified (longitudinal profiler), LCPC Methode d’essai No 40, World Bank Technical Paper 46.