Working Principle
The pavement laser multi-functional inspection system comprises: 13 laser sensors and 2 accelerometers. The road forward landscape image acquisition system comprises: 2 high-definition color cameras with a 360° pan-tilt video. The pavement distress video inspection system comprises: digital high-resolution industrial cameras and an industrial line-scan camera with 4096 pixels. The DMI (Distance Measuring Instrument) system comprises: an optical incremental rotary encoder mounted on the vehicle wheel. The data cable and data acquisition system comprises: data acquisition hardware system, including system host unit, laptop computer, power supply, and data cables. The acquisition software system comprises: data acquisition software and data analysis software. The power supply system comprises: traction batteries and vehicle-mounted power supply system. |
Multi-Functional Laser Pavement Inspection System
Front Roadway Scene Image Acquisition System
DMI Ranging System
Pavement Surface Distress Video Inspection System |
The instrument carrier vehicle options include: Maxus automatic-transmission diesel MPV, Mercedes-Benz commercial vehicle, and Dongfeng SUV.
Forward-Facing Road Image Acquisition System
(Road Slope 360-Degree Pavement View)
| Parameter | Specification |
| Acquisition Content | Forward-road photography, subgrade, roadside facilities, traffic signs and markings, greening, guard fences, street lamps, manhole covers, rainwater facilities, etc. |
| Camera Resolution | ≥2448 × 2048 pixels |
| Number of Cameras | 1-2 (expandable), equipped with 360° rotating pan-tilt head |
| Acquisition Interval | Adjustable from 5m to 50m |
Pavement Distress Video Detection System
The pavement distress video detection system is a mobile measurement system for pavement damage widely used in pavement condition survey, maintenance inspection and highway technical condition evaluation.
| Parameter | Specification |
| Detection Content | Road Distress Information |
| Imaging Resolution | ≤1.0mm |
| Effective Pavement Detection Width | ≥3.75 m |
| Transverse and Longitudinal Measurement Deviation | ≤5% |
| Indicated Relative Error of Pavement Distress Area | ±5% |
| Indicated Relative Error of Longitudinal Distance Sensor | ±0.1% |
| Measurement Repeatability of Pavement Distress Area | Coefficient of Variation (CV) ≤5% |
| Effective Detection Speed | 20-100 km/h |
Longitudinal-Distance Measuring Device
| Parameter | Specification |
| Positioning Accuracy | ≤0.1% |
| Resolution | ≥2000 pulses per revolution, manually configurable |
| Protection Class | IP65 or higher |
The Distance-Measuring Instrument (DMI) transmits all pulse-based mileage data to each measurement subsystem.
Equipment Parameters
| Detection Index | Pavement Smoothness Survey / Longitudinal Profile | Texture Depth TD | Rutting Survey(Rutting Depth)/Transverse Profile | ||
|---|---|---|---|---|---|
| International Roughness Index IRI | Rutting | ||||
| Special Direct-emitting Laser | Accelerometer | Texture Depth Laser | Special Direct-emitting Laser | Special Oblique-emitting Laser | |
| Sensor Type | Special Direct-emitting Laser | Accelerometer | Texture Depth Laser | Special Direct-emitting Laser | Special Oblique-emitting Laser |
| Quantity of Lasers | 1 | 2 | 1 | 9 (Re-usable with smoothness & texture) | 4 |
| Response Frequency | >150Hz | ≥400Hz | >300Hz | >150Hz | >150Hz |
| Sampling Frequency | 8KHz | - | 16KHz | 8KHz | 8KHz |
| Ground Clearance | 300±100mm | - | 300±100mm | 300±100mm | 745±500mm |
| Measurement Range | 500mm | ≥±5g | 500mm | 500mm | 1000mm |
| Resolution | <0.05mm | 1μg | <0.005mm | <0.05mm | <0.05mm |
| Accuracy | <0.5mm | 1mg | <0.1mm | <0.5mm | <0.5mm |
| Sampling Interval | 0.1m ~ 2m | - | 0.1m ~ 2m | 0.1m ~ 2m | 0.1m ~ 2m |
| Report Interval | 10m ~ 1000m | 10m ~ 1000m | 10m ~ 1000m | 10m ~ 1000m | 10m ~ 1000m |
| Detection Interval | ≤10mm | ≤10mm | ≤1mm | ≤10mm | ≤10mm |
| Detection Speed | 20 ~ 120km/h | 20 ~ 120km/h | |||
| Longitudinal Sampling Interval | - | - | - | ≤200mm | |
| Measurement Range | - | - | 0-2mm | 5-50mm | |
| Sampling Points on Cross-section | 1 ~ 2 | 1 ~ 3 | 13 | ||
| Effective Detection Width of Transverse Profile | ≥3.5m, adjustable | ||||
| Indication Error of Vertical Distance Measurement | ±1.0mm | ±0.1mm | ±1.0mm | ||
| Error of Longitudinal Distance-measuring Sensor | ≤0.05% | ±0.1% | ≤0.1% | ||
| Measurement Repeatability | C, ≤5% | C, ≤10% | C, ≤5% | ||
| Measurement Indication Error | 15% | 5% | 15% | ||
| Error Caused by Detection Speed Variation | ≤5% | ≤5% | ≤5% | ||
Intellectual Property
Working Principle
The pavement laser multi-functional inspection system comprises: 13 laser sensors and 2 accelerometers. The road forward landscape image acquisition system comprises: 2 high-definition color cameras with a 360° pan-tilt video. The pavement distress video inspection system comprises: digital high-resolution industrial cameras and an industrial line-scan camera with 4096 pixels. The DMI (Distance Measuring Instrument) system comprises: an optical incremental rotary encoder mounted on the vehicle wheel. The data cable and data acquisition system comprises: data acquisition hardware system, including system host unit, laptop computer, power supply, and data cables. The acquisition software system comprises: data acquisition software and data analysis software. The power supply system comprises: traction batteries and vehicle-mounted power supply system. |
Multi-Functional Laser Pavement Inspection System
Front Roadway Scene Image Acquisition System
DMI Ranging System
Pavement Surface Distress Video Inspection System |
The instrument carrier vehicle options include: Maxus automatic-transmission diesel MPV, Mercedes-Benz commercial vehicle, and Dongfeng SUV.
Forward-Facing Road Image Acquisition System
(Road Slope 360-Degree Pavement View)
| Parameter | Specification |
| Acquisition Content | Forward-road photography, subgrade, roadside facilities, traffic signs and markings, greening, guard fences, street lamps, manhole covers, rainwater facilities, etc. |
| Camera Resolution | ≥2448 × 2048 pixels |
| Number of Cameras | 1-2 (expandable), equipped with 360° rotating pan-tilt head |
| Acquisition Interval | Adjustable from 5m to 50m |
Pavement Distress Video Detection System
The pavement distress video detection system is a mobile measurement system for pavement damage widely used in pavement condition survey, maintenance inspection and highway technical condition evaluation.
| Parameter | Specification |
| Detection Content | Road Distress Information |
| Imaging Resolution | ≤1.0mm |
| Effective Pavement Detection Width | ≥3.75 m |
| Transverse and Longitudinal Measurement Deviation | ≤5% |
| Indicated Relative Error of Pavement Distress Area | ±5% |
| Indicated Relative Error of Longitudinal Distance Sensor | ±0.1% |
| Measurement Repeatability of Pavement Distress Area | Coefficient of Variation (CV) ≤5% |
| Effective Detection Speed | 20-100 km/h |
Longitudinal-Distance Measuring Device
| Parameter | Specification |
| Positioning Accuracy | ≤0.1% |
| Resolution | ≥2000 pulses per revolution, manually configurable |
| Protection Class | IP65 or higher |
The Distance-Measuring Instrument (DMI) transmits all pulse-based mileage data to each measurement subsystem.
Equipment Parameters
| Detection Index | Pavement Smoothness Survey / Longitudinal Profile | Texture Depth TD | Rutting Survey(Rutting Depth)/Transverse Profile | ||
|---|---|---|---|---|---|
| International Roughness Index IRI | Rutting | ||||
| Special Direct-emitting Laser | Accelerometer | Texture Depth Laser | Special Direct-emitting Laser | Special Oblique-emitting Laser | |
| Sensor Type | Special Direct-emitting Laser | Accelerometer | Texture Depth Laser | Special Direct-emitting Laser | Special Oblique-emitting Laser |
| Quantity of Lasers | 1 | 2 | 1 | 9 (Re-usable with smoothness & texture) | 4 |
| Response Frequency | >150Hz | ≥400Hz | >300Hz | >150Hz | >150Hz |
| Sampling Frequency | 8KHz | - | 16KHz | 8KHz | 8KHz |
| Ground Clearance | 300±100mm | - | 300±100mm | 300±100mm | 745±500mm |
| Measurement Range | 500mm | ≥±5g | 500mm | 500mm | 1000mm |
| Resolution | <0.05mm | 1μg | <0.005mm | <0.05mm | <0.05mm |
| Accuracy | <0.5mm | 1mg | <0.1mm | <0.5mm | <0.5mm |
| Sampling Interval | 0.1m ~ 2m | - | 0.1m ~ 2m | 0.1m ~ 2m | 0.1m ~ 2m |
| Report Interval | 10m ~ 1000m | 10m ~ 1000m | 10m ~ 1000m | 10m ~ 1000m | 10m ~ 1000m |
| Detection Interval | ≤10mm | ≤10mm | ≤1mm | ≤10mm | ≤10mm |
| Detection Speed | 20 ~ 120km/h | 20 ~ 120km/h | |||
| Longitudinal Sampling Interval | - | - | - | ≤200mm | |
| Measurement Range | - | - | 0-2mm | 5-50mm | |
| Sampling Points on Cross-section | 1 ~ 2 | 1 ~ 3 | 13 | ||
| Effective Detection Width of Transverse Profile | ≥3.5m, adjustable | ||||
| Indication Error of Vertical Distance Measurement | ±1.0mm | ±0.1mm | ±1.0mm | ||
| Error of Longitudinal Distance-measuring Sensor | ≤0.05% | ±0.1% | ≤0.1% | ||
| Measurement Repeatability | C, ≤5% | C, ≤10% | C, ≤5% | ||
| Measurement Indication Error | 15% | 5% | 15% | ||
| Error Caused by Detection Speed Variation | ≤5% | ≤5% | ≤5% | ||
Intellectual Property
