scholarly journals A Train Hot Bearing Detection System Based on Infrared Array Sensor

2013 ◽  
Vol 347-350 ◽  
pp. 672-676 ◽  
Author(s):  
Ying Wang ◽  
Zheng Rong Wu
Keyword(s):  
High Speed ◽  
Detection System ◽  
Bayesian Classifier ◽  
High Speed Train ◽  
Reliable Operation ◽  
Array Data ◽  
Array Sensor ◽  
Railway System ◽  
Infrared Array

Train wheel hot bearing is the primary cause of cutting-axle fracture and severe hotbox accidents, which poses a great threat to the safety of railway transmission. It is necessary and vital to research and develop the technique of hot bearing detector and corresponding system for maintaining the reliable operation of railway system and meeting the requirement of high speed train. In this paper, based on advanced infrared array sensor, a train hot bearing detection system which adopts master-slaver mode, collects bearing temperature array data and uses Bayesian classifier for hotbox discrimination is established to monitor train wheel hot bearing and the detector itself. It provides possibility to improve the accuracy of hotbox alarm, display the waveform of bearing temperature on 3D and manage the bearing information on whole line.

scholarly journals The Effect of Pendolino high-speed rail on the structure of buildings located in the proximity of railway tracks

2016 ◽  
Vol 21 (1) ◽  
pp. 231-238
Author(s):  
K. Grębowski ◽  
Z. Ulman
Keyword(s):  
Dynamic Analysis ◽  
High Speed ◽  
Building Structure ◽  
High Speed Train ◽  
High Speed Rail ◽  
Railway Tracks ◽  
High Speed Trains ◽  
Railway System ◽  
The Subject ◽  
The Impact

Abstract The following research focuses on the dynamic analysis of impact of the high-speed train induced vibrations on the structures located near railway tracks. The office complex chosen as the subject of calculations is located in the northern part of Poland, in Gdańsk, in the proximity of Pendolino, the high speed train route. The high speed trains are the response for the growing needs for a more efficient railway system. However, with a higher speed of the train, the railway induced vibrations might cause more harmful resonance in the structures of the nearby buildings. The damage severity depends on many factors such as the duration of said resonance and the presence of additional loads. The studies and analyses helped to determinate the method of evaluating the impact of railway induced vibrations on any building structure. The dynamic analysis presented in the research is an example of a method which allows an effective calculation of the impact of vibrations via SOFISTIK program.

Analisis Kinerja GSM-R Pada Kereta Cepat Indonesia

2020 ◽  
Vol 4 (2) ◽  
pp. 93-100
Author(s):  
Natriya Faisal
Keyword(s):  
New York ◽  
Control System ◽  
High Speed ◽  
Radio Waves ◽  
High Speed Train ◽  
New York University ◽  
Natural Conditions ◽  
Train Control ◽  
Train Control System ◽  
Railway System

The High-Speed Train of Indonesian will be implemented in 2022. The communication system used on the fast train is planned to use GSM-R in the future. GSM-R technology is expected to be applied to railways in Indonesia as well as in Europe. The railway system in Germany has applied GSM-R on the Berlin to Halle / Leipzig line using the first European Train Control System (ETCS) in Europe [2]. Radio waves used by GSM-R are at a frequency of 876 to 880 MHz for the uplink side and 921 to 925 MHz on the downlink side. This journal analyzes the GSM-R design that will be applied to Indonesian fast trains using the New York University Simulation (NYUSIM) method. This study evaluates the performance of GSM-R with intervention with natural conditions, such as temperature, humidity, air pressure, power and so on, resulting in a better GSM-R performance in terms of resistance to interference tested.

Effects of Wide-Area Operation Environment on the Bogie of High-Speed Train and Solutions

2016 ◽  
Vol 693 ◽  
pp. 314-317
Author(s):  
Peng Wang ◽  
Tai Yong Wang ◽  
Lu Yang Jing ◽  
Zhe Liu
Keyword(s):  
High Speed ◽  
Wide Area ◽  
High Speed Train ◽  
High Speed Railway ◽  
Railway System ◽  
Operation Environment ◽  
Definition Of

High speed railway system in China has developed rapidly in recent years but the operation environment of China has a great deal of differences between Europe and Japan. In the paper, a definition of wide-area operation environment is proposed and its effect on the bogie of high-speed train is analyzed, also some solutions are given.

scholarly journals Medium-Voltage AC Static Switch Solution to Feed Neutral Section in a High-Speed Railway System

Energies ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 2740 ◽  
Author(s):  
Jose Canales ◽  
Iosu Aizpuru ◽  
Unai Iraola ◽  
Jon Barrena ◽  
Manex Barrenetxea
Keyword(s):  
High Speed ◽  
Test Procedure ◽  
High Speed Train ◽  
High Speed Railway ◽  
Electric System ◽  
Medium Voltage ◽  
Three Phase ◽  
Railway System ◽  
Pass Through ◽  
Neutral Section

A high-speed train (HST) is a single-phase load supplied by a three-phase AC grid. The HST produces unbalanced three-line currents affecting the power quality of the grid. To balance the asymmetries on average, railway feeding sections are supplied that rotate the three phases of the grid. An electric isolation segment, called the neutral section (NS), between different sections is necessary. The HST must pass through this 1.6 km NS without power supply. In this paper, a medium-voltage AC static switch solution to feed the high-speed train in the NS is proposed. Thyristor technology is selected to design the 25 KVAC static switch. A medium-voltage power electronics procedure design is proposed to ensure proper operation in the final application. An NS operation is analyzed to identify impacts within the electric system and solution requirements are developed. Then, a low-scale prototype is used to experimentally validate the solution based on thyristor technology and the medium-voltage AC static switch is designed. Limitations on power and voltage at the Mondragon University Medium-Voltage Laboratory do not allow testing of the AC static switch at nominal conditions. A partial test procedure to test sections of the AC static switch is proposed and applied to validate the solution. Finally, experimental results for the Cordoba–Malaga (Spain) high-speed railway in real conditions with an HST crossing the NS at 300 km/h are shown.

scholarly journals REQUIREMENT FOR THE TOP STRUCTURE OF THE ROADS ON HIGH SPEED RAILWAYS

2021 ◽  
pp. 45-48
Author(s):  
Z Kakharov ◽  
N. Kodirov
Keyword(s):  
Experimental Study ◽  
Carbon Steel ◽  
High Speed ◽  
High Strength ◽  
Practical Significance ◽  
High Speed Train ◽  
Reliable Operation ◽  
Rolling Surface ◽  
Hot Weather ◽  
The Republic

Goal: Consider the issue of the requirement for the upper structure of the track on high-speed railways in the Republic of Uzbekistan. Methods: For reliable operation, the rails must be sufficiently strong, durable, wearresistant, hard and at the same time not fragile, since they perceive the shock-dynamic load. The material for the rails is high-strength carbon steel. Results: One of the main features of a continuous welded track is that wellfixed rail strings cannot change their length when the temperature rises or falls. Because of this, significant longitudinal tensile or compressive forces arise in them, which in hot weather can lead to the ejection of the path to the side, and in severe frost - to a fracture of the lash with the formation of a dangerous gap. Practical significance: An analysis from an experimental study shows the use of a continuous-welded track is especially effective on sections of high-speed train traffic, where increased requirements are imposed on the upper structure of the track. Particular attention is paid to the prevention and elimination of wavy wear of the rolling surface of the rails, which is eliminated by grinding them with special rail-grinding trains. The developed techniques can be recommended for practical use.

Based on Inclinometer to Measure Dynamic Deflection of High-Speed Railway Bridge

2013 ◽  
Vol 405-408 ◽  
pp. 3019-3026 ◽  
Author(s):  
Xian Long He ◽  
Li Zhen Zhao
Keyword(s):  
High Speed ◽  
Detection System ◽  
Good Method ◽  
Railway Bridge ◽  
High Speed Train ◽  
Loading Test ◽  
High Speed Railway ◽  
Deflection Measurement ◽  
Measurement Results ◽  
Beam Bridge

The dynamic deflection measurement is an important component to the bridge loading test of high-speed railway bridge. Using inclinometers to test the Dynamic deflection is a good method for High-Speed Railway bridge deflection detection. In this paper, we develop a new inclinometer and a new theory to fast calculate deflection. It has been use to detect the dynamic deflection of Baishui River bridge on FuZhou-WenZhou High-Speed Railway when high speed train runs across at kinds of speed. Results indicate: comparing with the measurement results of photoelectric deflection detection system, all dynamic deflection measurement results of inclinometers are very accuracy. Their deflection curves are also similar. All results also show: Using our inclinometers to test High-Speed Railway bridge dynamic deflection can get precise results and can satisfy the dynamic deflection measurement request of high-speed railway bridge. Comparing with other methods of dynamic deflection measurement, this method is very easy to operate., do not need stop the traffic, and not affected by weather, and not need a static reference point, can measure the dynamic deflection of any beam bridge.

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