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Locomotive snaking motion monitoring method

A technology for motion monitoring and locomotives, applied in complex mathematical operations, image data processing, instruments, etc., can solve problems such as the inability to quickly and real-time observe road surfaces and snaking movements, and achieve the effect of rich video information

Active Publication Date: 2017-06-20
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a locomotive snaking motion monitoring method, which solves the technical problem that the existing locomotive snaking motion monitoring method cannot quickly and real-time observe the road surface and snaking motion, and effectively realizes the snaking motion monitoring

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  • Locomotive snaking motion monitoring method

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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] Cameras can collect spatially dense data and offer the opportunity for remote measurements at the expense of less precision, are relatively cheap and can be monitored quickly. The basic idea of ​​the invention is to use a locomotive-mounted camera as a monitor of locomotive oscillations, although the environment is practically stationary and rigid, within the camera's field of view all parts of the scene are moving; locomotive motion can be based on perceived stability Assumptions are inferred from image motion known as the optical flow field, in order to provide information about the direction of motion and relative depth in the scene, through the video captured by the forward-facing on-board camera to analyze the snaking motion of the locomotive. Details include the following steps:

[0051] Step 1: For a given video, extract ...

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Abstract

The invention discloses a locomotive snaking motion monitoring method, and belongs to the field of locomotive monitoring and safety. The method comprises the following steps: extracting an image size of a given video, and initializing the FOE coordinates and the focal length fd of a camera; searching a Harris angle point of two continuous images, and carrying out the tracking matching of the same angle point of the two images through an LK algorithm; calculating the rotating speed of a locomotive; training a regression model through the data of different rotating speeds, and predicting the current snaking degree through the regression model. According to the invention, the method is advantageous in that the method can be suitable for the complex illumination and background conditions, achieves the non-contact detection, can effectively use the conventional intelligent equipment, and brings convenience to a manager for seat checking.

Description

technical field [0001] The invention relates to the field of locomotive monitoring and safety, in particular to a method for monitoring locomotive snaking motion based on forward vehicle video surveillance. Background technique [0002] The most basic criterion for evaluating railway operation is the stability and safety of train operation. With the several major speed increases of China’s railways and the construction of high-speed rail, the stability and safety of operation have also been placed in a more prominent position, while The snaking motion caused by the lateral vibration of the locomotive will affect the stability and safety of the locomotive running. [0003] Traditional methods of snaking motion measurement usually involve contact or displacement sensors, which need to involve the chassis and bogie where external damage often occurs. In recent years, there has been some research on locomotive snaking motion in China. The Chinese utility model patent with the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/285G06T7/33G06T7/38G06F17/18G06T7/70
CPCG06F17/18G06T2207/10016G06T2207/10024G06T2207/20081G06T2207/30232G06T2207/30241G06T2207/30244
Inventor 唐鹏胡燕花金炜东
Owner SOUTHWEST JIAOTONG UNIV
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