Quick and intelligent detection system and method for dimensions of rail transit infrastructure

Abstract

The invention discloses a quick and intelligent acquisition system for dimensions of rail transit infrastructures. The system is composed of a laser range finder, an infrastructure type identification device and a laser point cloud collection system. The laser range finder tracks and measures distance information of infrastructures in real time. The infrastructure type identification device is used for obtaining design parameter information of the infrastructures. And the laser point cloud collection system consists of an industrial robot, a laser scanner and an optical tracker; the industrial robot drives the laser scanner to dynamically obtain laser point cloud data of the surfaces of the infrastructures; and the optical tracker tracks the laser scanner and provides real-time spatial position and attitude information for the laser scanner. In addition, the invention also discloses a dimension offset detection system and detection method of rail transit infrastructures. According to the detection method, no detecting person intervention is needed; and automatic, intelligent and informationized detection of large infrastructures like a ballastless track slab can be realized. Compared with the prior art, the provided detection method enables the efficiency to be improved by over five times and the detection precision to be improved by one magnitude order.

Description

technical field [0001] The invention relates to the field of detection of ballastless track slabs of high-speed railways, in particular to a fast and intelligent detection system and detection method for the size of rail transit basic components. Background technique [0002] High-speed railway CRTSⅢ ballastless track slab has been fully promoted in the construction of high-speed railway. As the foundation of the bearing track, the CRTSⅢ ballastless track slab directly affects the smoothness of the track, so the manufacturing accuracy of the track slab is very high. According to the requirements of Tie Zong Science and Technology [2013] No. 125 (post-tensioning method) and [2013] No. 162 (pre-tensioning method), each board must undergo all-round testing and generate a test data report. The testing workload is very huge. [0003] The current CRTSⅢ type ballastless track slab inspection technology is an improvement on the CRTSII type slab inspection technology, which is mainl...

AI Technical Summary

Problems solved by technology

It takes about 50 minutes for this system to complete the inspection of a slab. Each ballastless track slab factory produces about 100 ballastless track slabs per day on average. The current detection efficiency is far from meeting the actual needs of track slab production.

The actual measurement accuracy of the existing measurement system using a total station with tooling is about 0.3mm, and the allowable processing error of the track plate is 0.5mm. The current detection system cannot fully meet the requirements of size detection error in terms of accuracy.

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