Description
The MLPL system is co-developed by VECTRA and IFFSTAR. Integrated in a mono or multifunctional vehicle, this laser profilometer has metrological qualities equivalent to those of the APL profilometer. As such, it is approved for the acceptance of wearing courses after construction.
The measure can be carried out at a speed between 36 and 130 km/h, on dry or slightly wet roads.
It does not require any adaptation of the driving or the transverse position of the vehicle in order to carry out the measurement in the wheel tracks.
- Sensors: Laser, gyrometer, accelerometer
- 2 traces of measurements in the wheel track (necessary to meet the requirements of the method and standard)
- Optional equipping for a third measurement trace in the center of the lane
- Number of tracks: 0.875 m on both sides of the axis
- Position of the measurement traces: ± 100 mm
- Measuring range: 0.1 mm
- Vertical resolution: 5 mm
- Length range seen by the MLPL : 0.05 mm to 50 m
- Indicators:
- Raw profile: IRI, APL (NBO, EBO), CP, SW, QSPO
- Macro texture indicators: PMP, PTE
The system allows you to:
- Circulate without constraint of speed or inconvenience to the user.
- Not permanently or occasionally exceed the size of the carrier vehicle, including measuring equipment. The width of the device, including all equipment, must not exceed 3m.
- Analyses the energy profiles and notes by waveband (EBO and NBO) as described in the LCPC test method N° 46 and the NF P 98–218 standard.
Possible output indicators are:
- File of the elementary points constituting the surveyed profile.
- Analysis of the energy profiles and note by waveband as described in the ME–LCPC method n°46 and the NF P 98–218 standard.
- International Roughness Index (IRI) value
