基于RFID的机车检修配件质量追溯管理系统的研究

本文通过对铁路局现有机车检修配件的管理方式进行研究和分析,将信息化融合到铁路机车检修配件管理过程中。设计了基于RFID的机车检修配件质量追溯管理系统的四层架构体系模型,并对机车检修配件使用的全生命周期过程的业务流程进行了分析,详细阐述了RFID在机车检修配件各个环节的应用。该系统由于采用了RFID射频识别技术,具有较强的实时性,可以实现对机车检修配件的全生命周期追溯管理。     

浅析机车车轴内部缺陷的超声波探伤

针对铁道机车车轴内部缺陷的超声波探伤难点,提出了段修采取径向检测的方法,发现了较大的线状危害性缺陷。分析了内部缺陷产生原因及危害,介绍了车轴线状和点状内部缺陷的定量分析方法及波形分析要点。实践证明,径向检测方法有效解决了目前机车车轴超声波探伤工艺存在的局限性,确保了行车安全。     

基于流量差法内燃机车随车油耗仪

文中介绍一专用于火车机车燃油消耗计量的仪器——内燃机车随车油耗仪，采用涡轮传感器测量流量，并用差值法对燃油消耗量进行积算。针对如何提高系统的测量精度，提出温度——体积误差修正方法。     

Design of a Vibration Sensor Based Train Arrival Detection System to Prevent Elephant-Train Accidents in Sri Lanka

At present, Sri Lanka is home to about 5,000-6,000 wild elephants roaming over close to 70% of the country’s land. Despite this blessing, around 150 elephants die each year due to many reasons. The main reasons for the altercations between humans and elephants are the drastic increase in the human population, human encroachment upon elephant territory for agriculture and settlements and unplanned development and transportation efforts. Elephants are long lived herbivores, and their survival depends upon regular migration over large distances to search for food, water, and social and reproductive partners. According to the Sri Lanka railways the average number of elephants that get killed due to elephant-railway accidents is about 9 per year. As a solution for this problem, we have proposed a novel system to pass a signal to indicate the train arrival. The proposed system detects the vibration of the locomotives and after detecting the vibration, alarm system will generate a high frequency signal within the frequency range, where the elephants are sensitive. The proposed system is a low cost device and this can be placed anywhere at any time. Moreover, this project aims to protect elephants from being harmed which usually happen due to various human activities.     

大轴重机车牵引杆参数对动力学性能影响

为研发30t大轴重电力机车,研究了推挽式低位牵引杆各项参数对轮重减载率、车体平稳性和脱轨系数等动力学性能的影响。采用多体动力学软件SIMPACK建立2B0机车动力学模型。分析了车辆的直线与曲线通过性能。结果表明直线工况下牵引杆转角对车体垂向平稳性影响较大;曲线工况下随着牵引杆转角的增大导向轮对轮重减载率迅速降低,且变化的斜率随牵引杆长度增加而变大;小半径曲线工况下脱轨系数和轮轨横向力受牵引杆参数影响较小。     

ICARUS: design and deployment of a case-based reasoning system for locomotive diagnostics

Locomotives, like many complex modern machines, are equipped with the capability to generate on-board fault messages indicating the presence of anomalous conditions. Such messages tend to be generated in large quantities, and are difficult and time consuming to interpret manually. This paper presents the design and development of a case-based reasoning system for diagnosing locomotive faults using such fault messages as input. The process of using historical repair data and expert input for case generation and validation is described. An algorithm for case matching is presented, along with some results on pilot data.