Measuring the distance between a moving vehicle and the road surface | Road surface inspection using SGI400
SinceVision SinceVision
Local road surface subsidence and ruts, which are difficult to detect visually, are measured while driving. This is a case study of distance measurement between the vehicle and the road surface using SinceVision's SGI400 laser displacement sensor.
Two sensors are mounted in front of the inspection vehicle to continuously acquire distance and shape data while in motion. This reduces the burden and oversight associated with manual inspections and is utilized for understanding unevenness and making decisions on road maintenance. Measurement information can be transmitted to the onboard computer via communication functions.
It supports a maximum sampling rate of 88 kHz, a measurement range of ±100 mm, a repeatability accuracy of 2 μm, and linearity of ±0.05% F.S. The original case shows a measurement accuracy of 0.1 mm.
With resistance to ambient light, vibration and shock resistance, and an IP67 protection structure, it is designed for outdoor inspection environments. The 1.2 million data storage capacity supports high-speed data acquisition. Actual detection performance needs to be evaluated based on driving, installation, and road conditions.

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