Data processing method based on self-moving rail transit mobile 3D scanning system

A rail transit and data processing technology, applied in image data processing, character and pattern recognition, image enhancement, etc., can solve the problems of inability to meet rail transit detection requirements, single software functions, inflexible measurement, etc., to reduce data processing work. The effect of improving data collection efficiency and reducing security risks

Active Publication Date: 2021-07-30
CHINA RAILWAY DESIGN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. The self-moving rail transit mobile 3D scanning system is large in size, heavy in weight, inflexible in measurement, inconvenient to carry, unable to meet the needs of daily inspection, and needs to collect data for the inspection items of rail transit one by one;
[0005] 2. During the measurement, it is necessary to cooperate with the tractor and the flatbed truck, which is difficult to cooperate and the measurement cost is high;
[0006] 3. Most of the vehicle-mounted 3D scanning systems are produced abroad and can only be imported through purchase. The related communication interfaces, data interfaces and software development interfaces are not open, and the software functions provided by the system are single, which cannot meet the detection needs of rail transit

Method used

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  • Data processing method based on self-moving rail transit mobile 3D scanning system
  • Data processing method based on self-moving rail transit mobile 3D scanning system
  • Data processing method based on self-moving rail transit mobile 3D scanning system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] As shown in the figure, a mobile 3D scanning system for self-moving rail transit includes:

[0079] The mobile car is set on the track and can move along the track;

[0080] A laser scanner, used to collect laser data within the length range of the measured rail traffic and within a certain distance range on both sides of the track, and the laser data is stored in the laser scanner;

[0081] A structured light scanner, configured to collect track profile data of the track being measured, the track profile data being stored in the structured light scanner;

[0082] The inclination sensor is used to collect the inclination data of the angle change of the mobile vehicle during the movement;

[0083] The gauge sensor is used to collect the initial gauge data of the track during the movement of the mobile vehicle;

[0084] The speed encoder is used to collect the mileage data of the mobile vehicle moving on the track;

[0085] A PLC controller, installed on the mobile veh...

Embodiment 2

[0103] As shown in the figure, on the basis of Embodiment 1, the data processing method based on the mobile three-dimensional scanning system of self-moving rail transit includes the following steps:

[0104] (1) Data collection of rail transit: use the self-moving rail transit mobile 3D scanning system to collect infrastructure and surrounding environment data along the measured rail transit, and obtain laser data, track profile data, inclination data, initial gauge data and mileage data, and transmit the inclination data, initial gauge data and mileage data to the host computer, the laser data is stored in the laser scanner, and the track profile data is stored in the structured light scanner;

[0105] (2) Multi-source data preprocessing: the laser data, track profile data, inclination data, initial gauge data and mileage data of the receiving step (1), and perform multi-source data fusion processing on the multi-source data to generate 3D point cloud, grayscale image, gauge...

Embodiment 3

[0128] On the basis of Example 2, such as Figure 2-Figure 11 As shown, an operating system is embedded in the host computer, and the host computer communicates with the PLC controller on the mobile vehicle through serial port communication. The operating system is used to receive laser scanners, structured light scanners, and speed encoders. , the multi-source data transmitted by the inclination sensor and the gauge sensor, analyze and fuse the multi-source data collected by multiple sensors, generate a three-dimensional point cloud and a grayscale image, and generate instructions according to the analysis results to control the mobile vehicle, according to the After the 3D point cloud and grayscale image are extracted and analyzed to obtain the measurement data required for rail inspection, the inspection of rail transit is completed.

[0129] Further, the operating system of the host computer includes a vehicle-mounted mobile three-dimensional scanning system control module...

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Abstract

The invention discloses a data processing method based on a self-moving three-dimensional scanning system for rail transit, which includes the following steps: (1) data collection for rail transit: using a self-moving three-dimensional scanning system for rail transit to collect data along the track traffic infrastructure and surrounding environment data to obtain laser data, track profile data, inclination data and mileage data, and transmit the laser data, track profile data, inclination data and mileage data to the host computer; (2) multi-source data pre-processing Processing: the host computer receives the laser data, track profile data, inclination data and mileage data of step (1), and performs multi-source data fusion processing on the multi-source data to generate a three-dimensional point cloud along the measured rail transit and Gray-scale image. The upper computer is used as the core to control the processor to realize one-time data collection and generate a three-dimensional point cloud gray-scale image by fusion of multi-source data. Compared with the traditional measurement method, the data collection efficiency is improved and the security risk of online is reduced. .

Description

technical field [0001] The invention belongs to the technical field of rapid comprehensive detection of rail transit, and in particular relates to a data processing method based on a self-moving three-dimensional scanning system for rail transit. 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 detec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61D15/08B61K9/08G06K9/62G06T5/50
CPCB61D15/08B61K9/08G06T5/50G06T2207/10028G06T2207/20221G06F18/25
Inventor 谭兆刘成王长进张冠军洪江华李亚辉许磊秦守鹏石德斌梁永赵海郑雪峰杨云洋张云龙杨双旗谷红叶薛琪
Owner CHINA RAILWAY DESIGN GRP CO LTD
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