Non-contact measurements of railway overhead line geometries

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University of Birmingham , Birmingham
Statementby C. Mair.
The Physical Object
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Open LibraryOL18745715M

“London and North East Railway” should read “London and North Eastern Railway” PageFigure – the lower of the two geometry diagrams shows the Stagger Effect dimension incorrectly, and does not show the most extreme blown off wire position. The corrected diagram is. Overhead line geometry measurement.

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Overhead line geometry – contacting system (pantograph) Rail profile measurement; Signalling; Structure profile measurement; Track geometry; Software. Balfour Beatty Rail Limited is registered in England and Wales under company number with its registered office at 5 Churchill Place, Canary. Fararooy, S., Mari, C.: Review of railway overhead line geometry measurement systems.

In: IEE Current Collections for High Speed Trains Seminar, pp. 4//4 () Google Scholar by: 1. REES Module #6 - Railway Alignment Design and Geometry 13 Vertical Geometry - Grades Rail – rarely exceeds 1% (% for industry lines) Highway – 4% common 6% on ramps Up to 8% Non-contact measurements of railway overhead line geometries book county roads LRT – maximum 4 to 6% Up to 10% for short sectionsFile Size: 2MB.

Non-contact measurements of railway overhead line geometries book Overhead Power Lines presents not only the scientific and engineering basis for the electric and mechanical design, but also comprehensively describes all aspects of most recent technology, including the selection and design of components such as conductors, insulators, fittings, supports and foundations.

The chapters on line survey, construction and maintenance address /5(3). Various technologies have recently been developed for high-speed railways, in order to boost commercial speeds from kmh −1 to kmh − these technologies, this paper introduces the kmh −1 class current collection performance evaluation methods that have been developed and demonstrated by Korea.

Specifically, this paper reports details of the video-based. The Catenary Geometry & Wear System is a non-contact measuring system using laser scanners and high-resolution digital cameras to measure height, residual thickness and stagger of up to 8 wires simultaneously at a top speed of km/h.

Vehicle Ride Measurement As an accredited testing organisation we are well versed in capturing and processing acceleration measurements to national/international standards in order to obtain Ride Quality information in accordance with, for example ENV “Railway applications – Ride comfort for passengers – Measurement and Evaluation”.

The CALIPRI rail measurement device makes it possible to quickly and correctly evaluate all common rail profiles with a single hand movement and can be expanded with software modules. Thanks to the non-contact measurement operation, the results are user-independent. False readings from hard to read dials are now a thing of the past.

Alan Baxter Network Rail Guide to Overhead Electrification ALB-GUN-EOH / February Rev 10 1 of 52 Introduction Introduction Overhead Line Equipment – or OLE – is the name railway engineers give to the assembly of masts, gantries and wires found along electrified railways.

Schedule of Dimensions for Indian Railways, mm Gauge Dear Sir/Dear Sirs, above rail level for overhead structures to mm and increase to mm in the horizontal distance to a fixed structure up to chance of the line being subsequently converted to 25KV on. A new chapter V(A) was added in respect of.

Track and overhead line electrification We provide design and construction expertise for a range of railway infrastructure projects. Our in-house design teams cover permanent way, overhead lines, traction power, and mechanical and electrical systems.

describes the development and validation of a new model of dynamics of railway overhead line electrification equipment (OLE), to be applied as a decision support tool to assist in system design and maintenance.

Figure 1 shows an overview of a typical span of rail overhead power line. 1. Introduction. Ice formation on railway overhead catenary wires is in wintertime a common cause for equipment malfunction and train-delays in countries with Nordic climate A catenary is a system of at least two overhead contact lines used to supply electricity to an electric train, tram (streetcar) or electric bus that is equipped with a pantograph (a current collector on the roof of the.

The analysis of catenary wires is important for the rail sector to measure changes over time. As catenary wires sag, or wear, this can cause major defects along the electrified route.

Rail Vision provides contactless approaches to catenary wire measurement of wire height, stagger, thickness, and change in position from track centreline.

Height measurement is carried out either by line of sight or by levelling measurements. In the line of sight measurement both the optical view finder and the graduated ruler are set up on the rail. For measurements in turnouts, a levelling device is generally used. In total, the NMT is equipped with a track geometry system, laser track scanners, a high-resolution video camera, unattended geometry measurement system, and overhead line inspection systems.

These are in addition to the PLPR system and a radio survey system which check coverage for the GSM-R communication system. This paper reviews various overhead wire geometry measurement (OWGM) systems currently used, or being developed for use, in railways world-wide.

The motivation for OWGM is first outlined. Different range-finding techniques are classified. Features of various OWGM systems are then summarised. (4 pages). Rail Vision’s track geometry measurements are based around readings taken from laser and inertial sensors.

Such non-contact measurements are important for the understanding of track behaviour with time. Track geometry measurements are made at high line speeds using TrackVue system. The system can be installed on a wide variety of vehicles and. The installation of overhead lines may require reconstruction of bridges to provide safe electrical clearance.

Description Non-contact measurements of railway overhead line geometries FB2

Overhead lines, like most electrified systems, require a greater capital expenditure when building the system than an equivalent non-electric system. While a conventional rail line requires only the grade, ballast, ties and rails, an.

Measurement and data collection will be carried out by the Atkins digital image correlation team which specialises in non-contact measurements in a live rail environment using imaging systems and correlation algorithms. The team has recently measured structural deflections to mm accuracy on over 16 locations for a variety of clients.

OmniQuest helps engineers to programme the works carried out by vehicles on the rail network more effectively. It provides real-time and historical information on the movement and status of vehicles fitted with an on-board unit in both graphical and tabular format making it quick and easy for engineers to understand and use.

Measurement and data collection will be carried out by the Atkins Digital Image Correlation team which specialises in non-contact measurements in a live rail environment using imaging systems and. BS EN Railway applications. Current collection systems.

Requirements for and validation of measurements of the dynamic interaction between pantograph and overhead contact line BS EN - TC Tracked Changes. Railway applications. Current collection systems. Figure 2 - Track geometry and rail profile measurement All measurements can be effectively carried out in the entire speed range of km/h.

The rail transversal profiles are also sampled every m in the same speed range. The system is also provided with a. The first will be a dedicated production recording car, linking track geometry, overhead line and 'six foot' gauging measurements for the first time.

The second vehicle will provide a high speed testbed which will be used to evaluate any new infrastructure monitoring systems that may be developed in the future.

An overhead contact line inspection system that can be installed on a rail-and-road car has been developed. It consists of a small-size contact wire wear measuring instrument and a small-size.

Measurement and data collection will be carried out by the Atkins Digital Image Correlation team which specialises in non-contact measurements in a live rail environment using imaging systems and correlation algorithms.

The team has recently measured structural deflections to mm accuracy on over 16 locations for a variety of clients. Installing new overhead line masts and wires for our programme of electrification also involves clearing vegetation from the railway, reconstructing any bridges that are too low to fit the OLE, and piling – drilling foundations for the overhead line masts.

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Quickly and accurately collect, view, analyze, and manage every dimension of the railway infrastructure and its conditions over time. You can manage track geometry measurements and exception data as well as longitudinal rail profile measurements and rail defects from popular rail measurement systems.

The new track geometry of turnouts is usually set in the route plan in height and direction. The marking out is done by the surveying department. The marking out (to ensure the target geometry) by wooden poles is particularly important.

It is necessary to ensure that the piles are put in sufficiently deep that they do not get damaged or buried during the work.However, PLPR is just one of seven individual measurement systems on-board.

Nor is it the only one to employ lasers. A second is the Fraunhofer non-contact overhead line inspection system. Rather than looking downwards, this uses lasers and cameras to measure the position of overhead wires (including stagger and height) using triangulation.Request PDF | Video-Based Dynamic Stagger Measurement of Railway Overhead Power Lines Using Rotation-Invariant Feature Matching | In this paper we propose an effective method of assessing the.