Visual Positioning Detection of EMU Brake Pad Based on Deep Learning
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 12
Abstract
［Objective］ With the continuous development of the rail transit industry, its operation scale and safety requirements are constantly increasing. To address the issues of low efficiency, missed and false detections in the manual inspection of EMU (electric multiple unit) brake pads, it is necessary to study visual positioning detection methods for EMU brake pads. ［Method］ A visual positioning detection method for EMU brake pads based on deep learning is proposed. To address the issue of indistinct image features in real-world scenarios, based on the Faster R-CNN (region conventional neural network) algorithm, an edge detection branch is introduced, and a target edge loss function is added to the loss function, integrating edge information from an auxiliary network. Bilinear interpolation is used to calculate feature pixel values, preserving more feature information of the EMU brake pads. ［Result & Conclusion］ The improved Faster R-CNN model proposed here can handle details at the edges, accelerate network convergence, and learn more edge features of the EMU brake pads. Through the bilinear interpolation method, the misalignment errors of target features during ROI (region of interest) pooling quantization process are reduced. The proposed brake pad detection method achieves an average precision of 98.42% and an FPS (frames per second) of 27.77%.
Authors and Affiliations
Chunling GUAN, Yingjie XU, Yuechao SONG
Keywords
Related Articles
- EP ID EP752716
- DOI 10.16037/j.1007-869x.2024.12.011
- Views 19
- Downloads 0
Influence of Brake Device Push-out Stiffness on Vibration Performance of Rail Transit Vehicle
Objective As a braking mode,electromechanical brake adopts the motor controlled screw rod drive to implement the pushing action, making the brake shoe to contact with the wheel and complete the transmission of brake forc...
Research on Urban Rail Transit Service Quality Evaluation Based on Passenger Demand
Objective Evaluation of urban rail transit service quality based on passenger demand not only promotes service quality improvement and enhances passenger satisfaction with travel, but also contributes to economic and soc...
Identification Method for Missing Cotter Pins in Catenary Systems Based on Stacked Denoising Autoencoder Network
Objective When using convolutional neural networks (CNNs) for the state detection of catenary system cotter pins, the imbalance between positive and negative samples leads to a low detection rate of missing pins in the n...
Application of DC Power Supply Air-conditioning Units in Urban Rail Transit Vehicles
［Objective］ Currently, air-conditioning units in urban rail transit vehicles predominantly use an AC (alternating current) 380 V power supply mode, which requires two power conversions before reaching the end-use equip...
Design and Research of Dynamic Loading System for High-speed EMU Axle Box Bearing Reliability Test Bench
Objective Bench test is a primary technical means for studying the performance of high-speed EMU (electric multiple units) axle box bearings. Accurately simulating the practical operational load conditions of axle box be...