Accurate positioning method for sleeve puller bolt of high-speed rail contact net supporting device

Abstract

The invention discloses an accurate positioning method for a sleeve puller bolt of a high-speed rail contact net supporting device. The accurate positioning method comprises the following steps that 1, obtaining a mark sample library of parts of the high-speed rail contact net supporting device; 2, constructing a deep convolutional neural network based on an improved Faster RCNN algorithm, whereinthe deep convolutional neural network comprises a feature extraction network, ROI generation, sample classification and frame regression; step 3, training the built deep convolutional neural network;and 4, adopting the trained deep convolutional neural network to accurately position the sleeve puller bolt of the high-speed rail overhead line system supporting device. According to the method, thehuge workload of manual recognition can be reduced, field image intelligent analysis is achieved, and positioning extraction of the small-scale sleeve puller bolt is achieved.

Description

technical field [0001] The invention relates to the technical field of high-speed railway image intelligent detection, in particular to a precise positioning method for a sleeve tightening bolt of a high-speed railway catenary support device. Background technique [0002] As of the end of 2018, the total mileage of my country's high-speed rail operations exceeded 29,000 kilometers, and the world's largest high-speed rail network has been built. At the same time, high-speed rail has become one of the most important means of transportation in China, which puts forward higher requirements for the safety performance of high-speed rail. The catenary support device is the main facility of the overhead catenary of the high-speed rail, which determines whether the catenary can operate safely. As the key power supply facility in the traction power supply system of the high-speed rail, the catenary mainly undertakes the power supply function of the high-speed rail EMU. Its reliability...

AI Technical Summary

Problems solved by technology

However, the complexity and diversity of catenary support device components

It brings serious challenges to the further application of the current inspection vehicle; the template matching positioning method, which is widely used in the automatic inspection technology of the current inspection vehicle, is sensitive to size differences, especially for the mispositioning of small parts such as sleeve jacking bolts Due to the high rate and missing location rate, it is necessary to further check the location results manually, which will affect the timely maintenance and treatment of the fault. During this process, the fault may further develop into an accident, and even bring significant losses and adverse effects.

Images