Broken Rail Detection System using RF Technology

Sireesha, R.; B, Ajay Kumar; Mallikarjunaiah, G; B, Bharath Kumar

doi:10.14445/23488549/ijece-v2i4p103

Cited by 2 publications

(2 citation statements)

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“…where s(t) is the observed signal in the injection side, A and ω are the amplitude and angular frequency (which is a scalar measure of rotation rate calculated by ω = 2π f ) of the injected signal, respectively, α is the attenuation constant per unit length of the TL, β is the phase constant per unit length of the TL, Γ is the reflection coefficient (see (13)) and x is two times the location of the impedance discontinuity. The phase and attenuation constants of a MTL, considering the model in Figure 3, are defined by the propagation constant γ d in Equation (11), where…”

Section: Proposed Methods For Identification and Location Of Track Circuit Failuresmentioning

confidence: 99%

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Identification and Localization of Track Circuit False Occupancy Failures Based on Frequency Domain Reflectometry

Alvarenga

Cerqueira

Filho

et al. 2020

Sensors

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Railway track circuit failures can cause significant train delays and economic losses. A crucial point of the railway operation system is the corrective maintenance process. During this operation, the railway lines have the circulation of trains interrupted in the respective sector, where traffic restoration occurs only after completing the maintenance process. Depending on the cause and length of the track circuit, identifying and solving the problem may take a long time. A tool that assists in track circuit fault detection during an inspection adds agility and efficiency in its restoration and cost reduction. This paper presents a new method, based on frequency domain reflectometry, to diagnose and locate false occupancy failures of track circuits. Initially, simulations are performed considering simplified track circuit approximations to demonstrate the operation of the proposed method, where the fault position is estimated by identifying the null points and through non-linear regression on signal amplitude response. A field test is then carried out in a track circuit approximately 1500 m long to validate the proposed method. The results show that the proposed method can identify and estimate the fault location due to a short circuit between rails with high accuracy.

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Section: Proposed Methods For Identification and Location Of Track Circuit Failuresmentioning

confidence: 99%

“…There are applications, such as [13], which seeks to detect broken rail by monitoring TC voltage and transmitting information to the train through a radio frequency system. This proposed tool requires an amount of equipment to be installed by TC, as well as communication systems with trains.…”

Section: Introductionmentioning

confidence: 99%