Distributed Reflectometry Method for Wire Fault Location Using Selective Average

Lelong, Adrien; Sommervogel, Laurent; Ravot, Nicolas; Carrion, Marc Olivas

doi:10.1109/jsen.2009.2033946

Cited by 35 publications

(35 citation statements)

References 13 publications

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“…The aggregation of all this information provides unambiguous location of the defect. This requires that the signal from one diagnosis system does not interfere with the others thus preventing from creating false alarms: an innovative averaging method based on the use of Walsh Hadamard sequences was proposed in [60].…”

Section: Embedded Distributed Diagnosismentioning

confidence: 99%

Wire Troubleshooting and Diagnosis: Review and Perspectives

Auzanneau¹

2013

PIER B

123

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Abstract-Electrical cables of all types are subject to aggressive environments that can create defects or accelerate aging. Many application domains require diagnosis methods and tools. Among many methods, reflectometry has proven to be the best candidate and can be easily applied to the detection and localization of hard defects, while only requiring one access point to the wire. But soft defects are more difficult to track and require new powerful methods. This paper presents a review of the recent state of the art in the field of wired network diagnosis and shows the evolution of future activities in this domain. It provides new perspectives and new research domains are proposed.

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Section: Embedded Distributed Diagnosismentioning

confidence: 99%

Wire Troubleshooting and Diagnosis: Review and Perspectives

Auzanneau¹

2013

PIER B

123

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“…This leads to frequency agility and adaptability which is ideal for live wire testing [5]. Unlike MCR, MCTDR has been implemented in distributed diagnosis strategy using a selective average method [8]. As its name indicates, this method consists in exploiting the averaging operation by using binary weighting coefficients.…”

Section: Reflectometry: State-of-the-artmentioning

confidence: 99%

“…These methods are interesting but remain limited as they require a huge post-processing procedure to reduce interference constraints. In complex wiring networks, a distributed diagnosis strategy is proposed [7], [8]. It consists in making reflectometry measurements at different points at the same time in order to reduce ambiguities caused by multipath signals propagation.…”

Section: Introductionmentioning

confidence: 99%

On-line diagnosis using Orthogonal Multi-Tone Time Domain Reflectometry in a lossy cable

Hassen¹,

Auzanneau²,

Incarbone³

2013

10th International Multi-Conferences on Systems, Signals &Amp; Devices 2013 (SSD13)

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Currently, on-line wire diagnosis using reflectometry is under intensive investigation, aiming at detecting and locating faults on wiring networks while the target system is operating. The idea is to inject a broadband test signal in the network under test and analyse the signal reflected by each impedance discontinuity. However, the presence of native signals on live wires may impact the diagnosis due to interference and EMC or limited bandwidth constraints. Our proposed "Orthogonal MultiTone Time Domain Reflectometry"(OMTDR) method, based on Orthogonal Frequency Division Multiplexing (OFDM) technique, seems to be a suitable candidate for on-line diagnosis as it achieves high data rate transmission, interference robustness, bandwidth efficiency and complete spectrum control. Moreover, it allows communication among diagnosis sensors to accurately locate faults position in multi-branch wiring networks which require more than one diagnosis sensor.

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“…One of the ubiquitous techniques is reflectometry. The development of this technique increases its functionality and applications [3][4][5]. Unfortunately, the reflectometry response itself is not always self-sufficient to identify and locate the defects in the electrical connections and it is a reason why a solution of the inverse problem may also enhance the applicability of reflectometry [6,7].…”

Section: Introductionmentioning

confidence: 99%

Contactless Modal Phenomena Based Approach to Detecting, Identifying, and Diagnosing of Electrical Connections

Orlov

Gazizov

2018

Complexity

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This paper presents a unified description of a new approach for contactless detection, identification, and diagnostics of electrical connections and describes an idea and principles of using modal probing for these tasks. Simulation and experimental results on pulsed signal propagation through flat cables demonstrate the modal decomposition of a pulsed signal, which varies depending on the state of the probed wire. It is shown that the presented tasks can be solved by modal probing. The article also considers the analysis of modal distortions in frequency domain and gives the formula for its practical use. This formula can be useful when the pulse duration time is longer than the minimum of mode delay difference. In conclusion, we present further development ideas of the modal probing.

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Distributed Reflectometry Method for Wire Fault Location Using Selective Average

Cited by 35 publications

References 13 publications

Wire Troubleshooting and Diagnosis: Review and Perspectives

Wire Troubleshooting and Diagnosis: Review and Perspectives

On-line diagnosis using Orthogonal Multi-Tone Time Domain Reflectometry in a lossy cable

Contactless Modal Phenomena Based Approach to Detecting, Identifying, and Diagnosing of Electrical Connections

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