High-precision vehicle-mounted road texture laser scanning device and data acquisition and processing method

By installing a laser scanning device in the middle of the vehicle and combining it with encoder control, the contradiction between scanning speed and accuracy of the vehicle-mounted scanner is resolved, achieving efficient and accurate road texture detection, meeting the ISO13473 standard, and applicable to the detection and maintenance assessment of various road engineering projects.

CN121783972APending Publication Date: 2026-04-03CHANGAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-22
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

Existing vehicle-mounted laser scanners have a trade-off between scanning speed and accuracy, and are significantly affected by vibration when installed at the front or rear of a vehicle, failing to meet the requirements of ISO13473 and impacting traffic.

Method used

Design a high-precision vehicle-mounted road texture laser scanning device, which installs a laser camera and a filler in the middle of the vehicle, uses a photoelectric encoder to control the laser scanning in sync with the wheel rotation, and combines data leveling, noise reduction and interpolation algorithms to achieve fast and accurate road texture information acquisition.

Benefits of technology

It achieves high-precision road texture detection that meets ISO13473 standards without affecting traffic, with a vertical resolution of 0.005mm, a horizontal resolution of 0.06mm, and a maximum scanning speed of 46km/h. It reduces the impact of vibration and is suitable for the detection and maintenance assessment of various road engineering projects.

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Abstract

The invention belongs to the technical field of road detection and road surface texture measurement, and particularly relates to a high-precision vehicle-mounted road surface texture laser scanning device and a data collecting and processing method.The device comprises a bearing vehicle, a laser camera, a mounting frame, a light supplementing device, a controller and a photoelectric encoder; all the components are integrated in a five-face closed box body and installed in the middle of a bearing vehicle so as to reduce the vibration influence, the photoelectric encoder is connected with a vehicle transmission shaft, motion signals are converted into electric signals to control the laser camera to emit laser according to the set frequency, reflected signals of a deep-color road surface are enhanced through the light supplementing device, and rapid scanning under the low exposure time is achieved. And under the condition that the standard condition is met, the global macroscopic texture is rapidly and dynamically detected. The device can realize dynamic high-precision acquisition, is excellent in anti-seismic property, can quickly acquire pavement surface texture information under the condition of not influencing traffic, and is suitable for detection and maintenance evaluation of various pavement projects such as roads, urban roads and airport runways.
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Citation Information

Patent Citations

  • Macro-micro texture separate acquisition device based on pavement texture spectral analysis

    CN112710660A