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Mobile rail transit three-dimensional data acquisition method and system

A technology for rail transit and 3D data, applied in image data processing, active optical measurement devices, instruments, etc., to achieve the effects of reducing measurement errors, enriching software functions, and low cost

Pending Publication Date: 2022-02-08
武汉天测测绘科技有限公司
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  • Application Information

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Problems solved by technology

[0009] In view of this, the present invention proposes a mobile rail transit three-dimensional data acquisition method and system, which is used to solve the problem that the existing mobile scanning system can only solve relative data

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  • Mobile rail transit three-dimensional data acquisition method and system
  • Mobile rail transit three-dimensional data acquisition method and system
  • Mobile rail transit three-dimensional data acquisition method and system

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Embodiment Construction

[0050]The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the implementation manners in the present invention, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0051] see figure 1 , the present invention proposes a mobile rail transit three-dimensional data acquisition method, the method comprising:

[0052] S1. Obtain the point cloud data obtained by scanning the rail transit lines with the mobile rail scanning vehicle;

[0053] The mobile rail scanning car scans the point cloud data of the rail transit line through the scanner carried on the dolly moving along the rail transit line;

[0054] see figu...

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Abstract

The invention discloses a mobile rail transit three-dimensional data acquisition method and system. The method comprises the following steps: acquiring point cloud data obtained by scanning a rail transit line through a mobile rail scanning car; determining conversion parameters between different coordinate systems through the posture and position relation between a scanner and a trolley on a mobile track scanning vehicle and the posture and position relation between the trolley and a track, and converting the point cloud data into a track coordinate system by using the conversion parameters; and extracting a section position and a corresponding section point cloud from the point cloud data according to the section mileage data, and comparing the section point cloud with the design file data. Rail transit three-dimensional data acquisition is carried out based on the vehicle-mounted mobile laser scanning technology, traditional frame station type scanning is replaced, multiple detection work can be completed at the same time, accurate measurement of the absolute position of rail transit data can be achieved through coordinate transformation and section extraction of point cloud data, the rail transit state is rapidly judged through data comparison, and the method can be used for completion acceptance.

Description

technical field [0001] The invention belongs to the field of rail traffic measurement, and in particular relates to a mobile rail traffic three-dimensional data acquisition method and system. Background technique [0002] The track of rail transit is the most important part of the entire rail transit project, and the geometric state of the track directly affects the safe and stable operation of the train. After long-term operation and maintenance of rail transit lines, the geographic spatial position of the line will move, and the geometric shape of the track will change. With the development of high-speed railway and urban rail transit, the demand for line detection is increasing. At present, the detection requirements of high-speed rail and urban rail transit mainly include track absolute coordinate measurement, line limit detection, tunnel structure section detection, platform spacing detection, catenary Status detection, track gauge measurement, superelevation measureme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C15/00G01B11/00G06T3/60B61K9/00
CPCG01C15/002G01B11/002G06T3/604B61K9/00
Inventor 丁磊梅文胜杨统
Owner 武汉天测测绘科技有限公司
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