Laser Inspection for Road Asset Management

Laser Scanning for Road Asset Management

Roads represent huge government investments and require periodic maintenance to keep them fit for purpose and mitigate deterioration.

Preventive road maintenance is the best way to conserve this infrastructure. Considering the resource constraints to carrying out road maintenance, governments need to allocate funds and resources in the best way possible.

To do this, it essential to assess the roads’ condition. Conventional road surveys are costly, time-consuming, and suffer a lack of repeatability and reproducibility.

But, using a vehicle-mounted point laser scanning system, you can have automatic road condition measurements at less cost.

Avestron’s Multi-Function Road Index Detection System can rapidly collect high-precision 3D point cloud data and grayscale data of the pavement.

This permits 3D modeling of the pavement according to the data and enables autonomous analysis and extraction of pavement distresses. It can detect 33 indicators such as pavement distress condition, rutting depth, surface unevenness, roadside facilities, and texture depth. It also offers complete sets of detection solutions to expressway, classified highway, urban roads, rail detection, and airfield pavement.

Avestron Road Inspection systems are powered by Intellectual Property from ZOYON Science and Technology Co., Ltd. and manufactured by Avestron in Canada.

Vehicle Mounted Laser Scanner for Road Deterioration Detection

Vehicle mounted laser scanning for road defects
Laser scanning for road asset management

Vehicle Mounted Laser Scanner System Components

Module

Function

2D PAVEMENT IMAGE DETECTION

Using a high-definition 2D image of correlation-illumination eliminates interference caused by roadside assets and vehicle shadow. 
This module detects transverse cracks, longitudinal cracks, pits, loose, weeping, plate angle fracture, broken boards, squirt mud, peeling corners, holes, seams material damage, exposed, repair.

3D PAVEMENT IMAGE DETECTION

Creates a high-precision 3D point cloud of the pavement and subdues environmental disturbances such as natural lighting, shadow, oil stain etc.
This module detects transverse cracks, longitudinal cracks, pits, subsidence, rut, upheaval, loose, weeping, plate angle fracture, broken boards, squirt mud, dislocation, arch, peeling corners, holes, and patching.

CROSS SECTION DETECTION

Makes measurements with a width of 3.6 m (non-discrete point analog) with a detection accuracy of 0.1 mm based on sub-pixel segmentation technique.
This module detects rutting and longitudinal dislocation; and dynamically displays rut section, calculates rutting area.

VERTICAL SECTION DETECTION

Performs tests under complex road conditions such as sudden stop, sudden start, change speed, horizontal and longitudinal slope and turns. Analyzes the smoothness of the road based on the surface contour.
This module detects flatness, texture depth, road wear, and lateral dislocation.

ASSETS DETECTION

Counts the number of road assets using GPS based and binocular photogrammetry and generates high resolution true color images.
This module detects protective structure defects, separation fence damage, sign defects, marking line defects, poor management, and greening protection.

ROAD GEOMETRY DETECTION

Cross slope, longitudinal slope and curvature.

Module Features:

Make road safety analysis based on preset rule and road geometry data; Configure data output spacing according to customer needs.

PAVEMENT LAYER THICKNESS AND PIPELINE DETECTION

Pavement layer thickness and pipelines.
Module Features:

Provide matching radar and antenna according to the customer needs; Precisely match based on temporal detection data.

GEOGRAPHIC LOCATION INFORMATION DETECTION

Latitude and longitude, altitude and station.

Module Features:

Based on road network level, space absolute positioning one meter; Based on the project level, space relative positioning of 0.5% Correct automatically in the whole kilometers.