Features
This system is to survey the pavement surface distress level and condition, which are the main input for the network and the project level in PMS(Pavement Management System).
This system consists of 1) one investigation vehicle, 2) a set of investigation processing equipment, and 3) the High Speed Computer and Server computer for the data processing and reduction.
The investigation items should include a series of pavement surface distress survey, rut depth survey and International Roughness Index(IRI).
The system is Laser Camer and controller and Recording System in order to survey the pavement surface distress and rut depth and transverse vertical depth and each system included the software to reduce and analyze the data surveyed.
The investigation vehicle includes a series of pavement surface recorder system, transverse cross profile recorder system and a distance measuring instrument(DMI) and GPS and recorder system
The investigation vehicle can be operated at day and night without the controlled lighting system.
Specifications
1 Investigation Vehicle(Any model can be applied)
1) Vehicle(Typical model is presented as follows) 1 Set
Complete vehicle with the form admission or structure modification admission in compliance with Each nation vehicle control law and atmospheric environment and noise regulation.
Weight : 5,130 Kg
Dimension (LxWxH)mm : 5125 x 1920 x 2000
Engine Displacement : 4000cc
Hill-climbing ability (Tan θ : 25%)
Interior space should be enough to mount the equipments required and floor finish with carpeting.
One or Two entrance doors
Air conditioning
AM/FM Stereo Cassette and CD Player
Insulation : Floor, Sides, Rear & roof
Work table
System rack
Ladder access to roof
Power Brake and power steering
Storage Area
Equipment Rack
Revolving light
Illuminated Sign Board
Conference Room
2) Generator 1 Set
4 Cycle Gasoline or light oil engine
Pressure Air Cooled
1 or 3 Phase, 5KW, 60Hz
Industrial Muffler
High Air Temperature Shutdown
Air Discharge Duct Adaptor
3) Power Distribution Control Panel 1 Set
Power Supply : AC 220V, DC24V, DC12V
Output : Protected with NFB
Power Supply on/off switch
Adjustable Voltage(with Inverters)
4) Sensor boxes within front site of Back Tires 1 Set
2 Surface Distress Survey System
2.1 Laser Measurement Image System(LRIS)
1) Specification
Image size : 4096 pixels/line, 28000 lines/s
Image width : 4 m
Laser Class : 3B
Power : 250W
Sensor size : 300mm(H) X 375 mm(L) X 200 mm(T)
Sensor weight : 20kg
Video Disk Recorder (VDR)
2) Distress Recording System
Measuring width : 4.0m
Measuring accuracy : Crack width 1mm
Transverse Resolution : 1 mm
Longitudinal resolution : 1 mm
Maximum measuring speed : 100Km/h
3 Rut Depth Survey System
3.1 LRMS(Laser Rut Measurement System) Specifications
No. of laser profilers : 2
Sampling rate (max.) : 25 profiles/s
Exposure/Laser pulse duration : 0.01 -1.00 ms
Profiles spacing (at 100km/h) : 20 cm
Transverse resolution (max.) : 1280 points/profile
Tranverse field-of-view(nominal) : 4m
Depth range of operation : 750mm
Z-axis(depth) accuracy : 土1mm
X-axis (width) accuracy : 土1mm
Laser profiler dimensions (W X H X D) : 140mmX1052mmX305mm
Power consumption (max.) : 150 W at 120/240 VAC
4 Data Processing & Analysis System
4.1 Pavement Distress & Rut Depth
Analysis System (Laser Camera image recording System & Multi-point displacement system(4m width with 25mm distance-160 points)
- Keyboard Inventory Facility
1 KVM Keyboard
Data Processing Software(KOHAT Crack Analysis Program)
Power Supply
- ROW Measurements
Type which is capable of Saving Images with crack
250 GB HDD
Data Processing Software
- Automated Crack Detection System
Which is capable of detecting Severity, Extent, Orientation
Which is capable of saving and printing the crack map.
4.2 Surface Distress analysis software
Laser Camera Image recording System should provide following analysis software for the surface distresses.
1) Analysis Items
Asphalt Pavement
Fatigue Cracking
Block Cracking
Edge Cracking
Longitudinal Cracking
Transverse Cracking
2) Cracking analysis Items
Crack length
Distribution percentage of Cracking
5 GPS(Global Positioning System)
KOHAT will provide GPS for position coordination for IRI(International Roughness Index) and Rut depth and Pavement distress image and Data Processing & Analysis System
Compact GPS
Summary of Specifications
|
Classification
|
Specification
|
|
|
Pavement
surface distress survey system |
Distress survey accuracy
(crack width) |
Resolving Power =
 |
|
Transverse
coverage width |
F3.7
|
|
|
Type of camera
|
Laser Camera
|
|
|
Number of camera
|
2
|
|
|
Lighting system
|
Laser light
|
|
|
Size of an image
|
Above width 3.7m and length 7.5m{about 4mX8m)
|
|
|
Resolution of an image
|
All collected images shall be with same resolution.
Should detect cracks as small as 1mm at anytime day or night. |
|
|
Rut Depth
Measurement System |
Vertical Measurement
precision |
Less than ±1mm
|
|
Longitudinal sampling Interval
|
Less than 1m
|
|
|
Transverse Sampling Interval
|
Less than 25mm
|
|
|
Transverse coverage
width |
More than 3.7m
|
|
|
Maximum vertical
measurement depth |
More than ±7.5cm
|
|
|
Longitudinal
Profiling System |
Measurement
method |
Inertia Non contact sensors Method
|
|
Survey aocuracy
|
Less than 0.1mm
|
|
|
Longitudinal
sampling Interval |
Less than 25mm
(at 100km/h) |
|
|
Transverse sampling
number of profiles per pass |
2 points
|
|
Position
Confirming System |
Distance Measurement |
Error Tolerance Below 0.5%
|
|
Measurement Environment
|
Anytime day or night
|
|
|
Measurement Speed
(Pavement surface distress survey, rutting Measurement, Longitudinal Profiling Measurement) |
Max. 100km/h
|
|
|
Chassis
|
Seating |
More than 4 seat
|
|
Maximum Speed
Fuel Tankage |
Max. 100km/h
Diesel/Gasoline More than 60ℓ |
|
|
Engine Horsepower
|
More than 150HP
|
|
|
Overall Length
|
More than 5,125mm in length(5125mm)
|
|
|
Overall Width
|
More than 1,920mm in width(1920mm)
|
|
|
Overall Height
|
More than 1,008mm in height(2000mm)
|
|
|
Wheel Base
|
More than 3,200mm in distance
|
|
|
Handle Position
|
Left-Hand
|
|
|
Warning Lights
|
A unit, Yellow Color, 300candela(CD)
A rotating warming light(Rectangular shape) |
|
Remarks
One year warranty service will be provided.
technical training will be provided by manufacturer's qualified engineer.
Business area
Road/Airport/Railroad/Harbor pavement/ Facilities management and Planning
Pavement management system (PMS) and software development
Railroad roadbed/ Harbor pavement management system development
National road, City, County, Airport pavement management and vicarious execution
Lecture and education for Road and Airport pavement engineers Planning and Research in test pavement of road and airport
Consultation for pavement construction and design
Evaluation of structure stability in railroad roadbed
Laboratory and field test of various pavement materials
Pavement structure evaluation using FWD
Roughness measurement of pavement
Skid resistance measurement of pavement
Pavement distress condition survey
Pavement survey equipment development
Our Client
Nationwide cities, provinces and counties
National road / highway management agencies
Airport and port authorities and operators
Military facility management units
National railroad and local subway authorities
Pavement construction or design companies
Pavement material development & production companies
Universities and Pavement relation laboratories
 |
Achievements & Performance
|
