Development of Contact-Loss Measuring System Using Ultraviolet Ray Detection

Hayasaka, Takamasa; Shimizu, Mitsuaki; Nezu, Kazuyoshi

doi:10.2219/rtriqr.50.131

Cited by 14 publications

(5 citation statements)

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“…Several arcing systems based on UV cameras were developed by railway operators. Examples of such sensors are described in (Hayasaka, Shimizu, & Nezu, 2009) and ).…”

Section: Uv Camerasmentioning

confidence: 99%

Prognostics and Health Management for an Overhead Contact Line System - A Review

Brahimi

Medjaher

Mohammed

et al. 2020

IJPHM

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The railway industry in European countries is standing a significant competition from other modes of transportation, particularly in the field of freight transport. In this competitive context, railway stakeholders need to modernize their products and develop innovative solutions to manage their asset and reduce operational expenditures. As a result, activities such as condition-based and predictive maintenance became a major concern. Under those circumstances, there is a pressing need to implement prognostics and health management (PHM) solutions such as remote monitoring, fault diagnostics techniques, and prognostics technologies. Many studies in the PHM area for railway applications are focused on infrastructure systems such as railway track or turnouts. However, one of the key systems to ensure an efficient operability of the infrastructure is the overhead contact line (OCL). A defect or a failure of an OCL component may cause considerable delays, lead to important financial losses, or affect passengers safety. In addition maintaining this kind of geographically distributed systemsis costly and difficult to forecast. This article reviews the state of practice and the state of the art of PHM for overhead contact line system. Key sensors, monitoring parameters, state detection algorithms, diagnostics approaches and prognostics models are reviewed. Also, research challenges and technical needs are highlighted

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“…Several arcing systems based on UV cameras were developed by railway operators. Examples of such sensors are described in (Hayasaka, Shimizu, & Nezu, 2009) and ).…”

Section: Uv Camerasmentioning

confidence: 99%

Prognostics and Health Management for an Overhead Contact Line System - A Review

Brahimi

Medjaher

Mohammed

et al. 2020

IJPHM

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“…More attention has been paid to the monitoring of the contact status of the pantograph and catenary system and pantograph vibration as important indices to evaluate the dynamical performance and current-collection quality [1,2]. In recent years, new methods to measure and process the contact status and acceleration have been presented, including image processing (visible light, ultraviolet ray, or infrared ray detection) [3][4][5][6][7], the vibration mode superposition and inversion [8,9], and optical fibre among others.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Monitoring System for Pantograph and Catenary Based on Condition‐Based Recognition of Pantograph

Zhou

Yang

Liu

et al. 2019

Shock and Vibration

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In recent years, the length of electrified railway systems has increased along with the number of railway vehicles in China. For the pantograph-catenary system, as one of the key components of the vehicle system, an urgent problem includes diagnosing faults and proposing a safety monitoring system to assure safe operation, improve the level of detection, and decrease the cost of maintenance and repairs. For the monitoring system based on the pantograph, the design process, whole architecture, function module, fault diagnosis method, and monitoring scheme have been investigated. Two specified faults were introduced to describe how to develop such a monitoring scheme based on the pantograph condition-based recognition.

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“…so-called hard points [3][4][5][6]. Contactless methods, which may be used only for static measurements, usually require the use of laser scanners or vision cameras [2,[7][8][9][10]. Sometimes a combination of measurement current collectors and cameras is employed [4,7,11].…”

Section: Introductionmentioning

confidence: 99%

“…Contactless methods, which may be used only for static measurements, usually require the use of laser scanners or vision cameras [2,[7][8][9][10]. Sometimes a combination of measurement current collectors and cameras is employed [4,7,11]. The measurement of contact wire wear is performed, as a rule, with the use of laser scanners [4][5][6][7][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Robustness of contact-less optical method, used for measuring contact wire position in changeable lighting conditions

Skibicki

2017

Teh. vjesn.

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Original scientific paperThe article presents verification of robustness of contactless method based on 2D image camera, which is used to measure catenary contact wire position in changeable ambient lighting conditions. Robustness in changeable lighting conditions is ensured through the combination of advanced image processing for background information removal and the algorithm of error correction. This algorithm detects incorrect images and substitutes information from these images with proper measurement data obtained from correct images which precede and follow the incorrect one. The paper presents and discusses the processing algorithms used, as well as shows examples of measurement results obtained on a full scale laboratory stand. Keywords: contact line; diagnostic systems; electric traction; measurement systemsRobustnost bezkontaktne optičke metode korištene za mjerenje položaja žice spoja u promjenjivim uvjetima osvjetljenja Izvorni znanstveni članak U članku je prikazana provjera robustnosti bezkontktne metode utemeljene na 2D fotoaparatu, koja se koristi za mjerenje položaja žice spoja u promjenjivim uvjetima osvjetljenja okoline. Robustnost u promjenjivim uvjetima osvjetljenja osigurana je kombinacijom napredne obrade slike za uklanjanje pozadinskih informacija i algoritma ispravljanja pogrešaka. Ovaj algoritam otkriva netočne slike i nadomješta informacije s ovih slika s odgovarajućim mjernim podacima dobivenim od ispravnih slika koje prethode i slijede pogrešnu. Rad prikazuje i raspravlja o korištenim algoritmima za obradu, te pokazuje primjere rezultata mjerenja dobivenih na laboratorijskom mjernom pultu.

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Development of Contact-Loss Measuring System Using Ultraviolet Ray Detection

Cited by 14 publications

References 0 publications

Prognostics and Health Management for an Overhead Contact Line System - A Review

Prognostics and Health Management for an Overhead Contact Line System - A Review

Investigation on Monitoring System for Pantograph and Catenary Based on Condition‐Based Recognition of Pantograph

Robustness of contact-less optical method, used for measuring contact wire position in changeable lighting conditions

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