Construction clearance detection method

A detection method, a technology of building boundary, applied in measurement devices, surveying and navigation, photogrammetry/video surveying and other directions, can solve the problem of laser line scanning measurement method and manual detection method that can only be measured intermittently and is affected by human subjective factors The problem of slow detection speed, etc., achieves the effect of fast measurement speed, convenient and rapid positioning of intrusion points, and elimination of hidden dangers of intrusion.
CN110398199AInactive Publication Date: 2019-11-01内蒙古能建数字信息科技有限公司
4 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
内蒙古能建数字信息科技有限公司
Publication Date
2019-11-01
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More