Construction clearance detection method

Abstract

The invention relates to a railway safety detection technology and specifically relates to a construction clearance detection method. The method includes the following steps: pre-calibrating a cameraby using a Zhang Zhengyou calibration method and obtaining camera parameters; invoking geographic location data information of a platform by using locating information of a computer, and determining astation of a current location and a station name; during an operating process of a train, taking a video image; performing phase unwrapping according to a projection structured light measuring technology; performing three-dimensional computation by using a phase unwrapping result, and generating three-dimensional point clouds; comparing each Z value in the three-dimensional point clouds with a clearance intrusion standard to judge if there is clearance intrusion, wherein if there is clearance intrusion, performing clearance intrusion alarm, and determining the account of clearance intrusion and a clearance intrusion location, and otherwise, ending the detection. The construction clearance detection method solves the problems that a manual detection method is slow in detection and affectedby subjective factors and that a laser line scanning method can only perform discontinuous measurement. In the meanwhile, a window period of train operation is not required during detection of clearances of platforms and shelters.

Description

technical field [0001] The invention relates to a railway safety detection technology, in particular to a building limit detection method. Background technique [0002] Efficient and accurate monitoring of the boundary status of various platforms and shelters along the railway is of great significance to enhance the safety of railway transportation and prevent traffic accidents. Every year, the railway bureaus invest a lot of manpower and material resources to regularly monitor the invasion status of the railway shelters and platforms. [0003] Traditional railway encroachment monitoring generally uses manual measurement methods such as plumb lines. After artificially selecting possible encroachment points, select the corresponding plumb line and other manual measurement tools to carry out encroachment monitoring. Manual measurement methods such as plumb lines have the disadvantages of slow speed and great influence of human subjective factors. [0004] In addition to manu...

AI Technical Summary

Problems solved by technology

[0006] The invention provides a building limit detection method, which solves the problems that the manual detection method has a slow detection speed, is affected by human subjective factors, and the laser line scanning measurement method can only measure intermittently.

Images