Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Track inspection imaging control signal generator, generation method and track inspection system

A signal generator and imaging system technology, which is applied in the field of rail transit, can solve problems such as two-dimensional or three-dimensional depth image distortion, uneven line scan control signals, hidden safety hazards, etc., and achieve the effect of uniform control signals

Inactive Publication Date: 2020-06-23
成都精工华耀科技有限公司
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the actual operation of the comprehensive inspection vehicle, there is a delay of about 1 day from the beginning of the inspection to the receipt of the inspection results. If there are large or major defects, the first discovery time will be missed, and there are certain safety hazards.
[0006] 2) The frequency coverage of comprehensive inspection and inspection vehicles is low
However, in our practical application, we found that there is such a problem: the speed signal transmitted by MVB has a large delay, and the generated line scan control signal is not uniform, which will make the captured two-dimensional or three-dimensional depth image travel along the train. Orientation is distorted, such as Figure 1-3 Shown: where, figure 1 This is the case where the size of the fastener is normal under the condition of constant speed driving; figure 2 It is the acceleration stage, the mileage interval of the generated control signal is greater than the actual mileage, resulting in image compression, image 3 Middle is the deceleration stage, the mileage interval of the generated control signal is smaller than the actual mileage, causing the image to be stretched

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Track inspection imaging control signal generator, generation method and track inspection system
  • Track inspection imaging control signal generator, generation method and track inspection system
  • Track inspection imaging control signal generator, generation method and track inspection system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] The mounted track visual intelligent inspection system for electric buses consists of a power supply module, a vehicle MVB bus interface, a signal generator, a visual imaging module, a data acquisition module, a data processing module and a mounting bracket, such as Figure 4 As shown, the power supply module supplies power to the imaging control module, signal generator, data acquisition module, and data processing module; the power supply module, signal generator, data acquisition module, and data processing module are located inside the compartment, and the visual imaging module is fixed on the On the bogie of electric passenger car, located outside the car, the installation diagram is as follows Figure 5 shown.

[0071] like Figure 5 As shown, an accelerometer 6 is installed on the vision module 5, and an instantaneous speed calculation and signal generation module 7 is installed in the compartment. The instantaneous speed calculation and signal generation module...

Embodiment 2

[0094] The difference from Embodiment 1 is that formula 4 is used to quickly calculate the instantaneous vehicle velocity v 1 :

[0095] 1) when v 0 When it is not updated, it is quickly calculated by the following iterative formula:

[0096]

[0097] in, is the instantaneous velocity at the i-th and i-1 moments, with as the instantaneous velocity v at the current moment 1

[0098] 2) when v 0 When updating, through the integral formula (1), the instantaneous velocity v 1 Correction can avoid integral accumulation error;

[0099] where v 0 The way to judge the update is to check whether there is data update on the MVB interface or to judge the v 0 Whether the value has changed.

Embodiment 3

[0101] A state that does not distinguish between electric and passenger cars, and directly performs the instantaneous velocity v 1 The calculation method is:

[0102] when v 0 =0, and |a|≤a_th 1 , it is judged that the train stops, so that v 1 =0, turn off the control signal p output;

[0103] when v 0 >0, and v 0 When not updated, use formula 4 to quickly calculate the instantaneous velocity v 1 ;

[0104] when v 0 >0, and v 0 When updating, the velocity v is calculated using formula 1 a , so that v 1 =v a .

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

PUM

No PUM Login to View More

Abstract

The invention provides a track inspection imaging control signal generator, a generation method and a track inspection system. The signal generator comprises an accelerometer and an instantaneous speed calculation and signal generation module; train speed and accelerometer signals acquired by an MVB bus are comprehensively utilized, so that the instantaneous speed of a train in any motion state isaccurately calculated in real time; based on the instantaneous speed, according to the mileage pulse signal resolution requirement of an inspection imaging system, the linear array scanning control signals of the inspection imaging system are generated in real time, so that the inspection imaging system mounted on the train performs uniformly scans and images a track to obtain two-dimensional orthree-dimensional data of the surface of the track, so that the data can be applied to track disease detection.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a track inspection imaging control signal generator, a generation method and a rail inspection system. Background technique [0002] Rail transit is the supporting industry of our transportation, and it plays great value in many aspects such as national economic development and people's daily life. As the infrastructure of rail transit, the performance status of rail is closely related to the safety of rail transit operation. After the subway has been in operation for a long time, due to various reasons such as train rolling, foundation settlement, and material aging, the track condition will gradually deteriorate, and various diseases such as gauge changes, rail fractures, and fastener failures will occur randomly. If it is not dealt with, it may lead to major traffic accidents such as train derailment. Therefore, track inspection and maintenance work is particularly impo...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B61K9/08B61K9/10B61C17/00G06K9/00G06Q10/00
CPCB61K9/08B61K9/10B61C17/00G06Q10/20G06F2218/04
Inventor 左丽玛
Owner 成都精工华耀科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com