Fibre optic portable rail vehicle detector

Kepák, Stanislav; Čubík, Jakub; Zavodny, Petr; Hejduk, Stanislav; Nedoma, Jan; Davidson, Alan; Vašinek, Vladimír

doi:10.1117/12.2257061

Cited by 5 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As described by the authors, for example, snow and black ice reduce the efficiency of these systems. As for nondestructive installation, [32] and [33] come closest to the topic. An alternative track vibration monitoring system based on the two-arm Mach-Zehnder interferometer has been proposed, demonstrated, and tested along a single railway track in the Prague subway system [32].…”

Section: Discussionmentioning

confidence: 99%

“…Two passive detection systems placed 50 m and 1.3 km away from the control room were used to measure tunnel vibrations triggered by passing trains free from the effect of any unrelated EMI existing in the subway tunnel. In [33], the authors proposed a fiber-optic system consisting of one or more passive fiber track-side sensors based on the three arm Mach-Zehnder interferometer and an x86 processing unit located at the work site. The system was tested in real traffic with the results obtained indicating the successful detection of all the rail vehicles with one sensor.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Fiber-optic interferometric sensor for monitoring automobile and rail traffic

Nedoma¹,

Fajkus²,

Kahánková³

et al. 2018

Turk J Elec Eng & Comp Sci

Self Cite

View full text Add to dashboard Cite

This article describes a fiber-optic interferometric sensor and measuring scheme including input-output components for traffic density monitoring. The proposed measuring system is based on the interference in optical fibers. The sensor, based on the Mach-Zehnder interferometer, is constructed to detect vibration and acoustic responses caused by vehicles moving around the sensor. The presented solution is based on the use of single-mode optical fibers (G.652.D and G.653) with wavelength of 1550 nm and laser source with output power of 1 mW. The benefit of this solution lies in electromagnetic interference immunity and simple implementation because the sensor does not need to be installed destructively into the roadway and railroad tracks. The measuring system was tested in real traffic and is characterized by detection success of 99.27% in the case of automotive traffic and 100% in the case of rail traffic.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Fiber-optic interferometric sensor for monitoring automobile and rail traffic

Nedoma¹,

Fajkus²,

Kahánková³

et al. 2018

Turk J Elec Eng & Comp Sci

Self Cite

View full text Add to dashboard Cite

show abstract

“…The work in [23] described the use of a Mach-Zehnder fiber-optic interferometer to monitor car traffic, for detecting vehicles, and measuring their speed. A Mach-Zehnder interferometer for rail transport was described in [24], which analyzed the use of a three-armed Mach-Zehnder interferometer in rail traffic as a traffic density detector.…”

Section: State-of-the-artmentioning

confidence: 99%

Use of Fiber-Optic Sensors for the Detection of the Rail Vehicles and Monitoring of the Rock Mass Dynamic Response Due to Railway Rolling Stock for the Civil Engineering Needs

et al. 2019

Self Cite

View full text Add to dashboard Cite

The paper describes the original results of a comparative study of the standard seismic station vs. a novel interferometric sensor for civil engineering needs. The presented results showed that to implement seismic measurements using standard seismic stations, a method using a fiber optic interferometer may serve as an alternative. We presented time records and the frequency spectra obtained from experimental measurements of the dynamic response of the upper rock mass beneath passing tram vehicles (a total of 769 passes) over a period of five months of practical measurements under various climatic conditions. The fiber-optic sensor detected all phenomena at a 100% rate, and the recorded results were compared to the results from a standard seismic station. Both sets of results were recorded simultaneously and agreed significantly, especially in terms of frequency. With regard to time, all tram vehicle axles were detected in individual time records. With regard to frequency, the results detected in the bandwidth generally correlated to rail transport for individual types of tram vehicles.

show abstract

“…Only a few published papers have focused on the usage of fiber-optic interferometric sensors for traffic applications so far. An interesting study is presented in [15], in which the authors show measurements from a fiber-optic interferometer to detect trains in the Prague subway system. The measuring arm of the interferometer…”

Section: Introductionmentioning

confidence: 99%

Fiber Optic Phase-Based Sensor for Detection of Axles and Wheels of Tram Vehicles

Nedoma¹,

Kostelanský²,

Fridrich³

et al. 2020

Komunikácie

Self Cite

View full text Add to dashboard Cite

This paper presents a novelty approach to usage of the fiber-optic phase-based sensor in railway transportation. We designed and tested the real deployment of this sensor working on the principle of light interferences within optical fibers. The proposed construction of the sensor allowed to increase the sensitivity and thanks to this can be detected and calculated individual axles and wheels of tram vehicles. We performed long-time period measurements (April to September 2019) in diverse climatic conditions, including measurements of 642 tram passages (several different construction types) in real urban traffic. The detection accuracy level was slightly above 99.4 %.

show abstract

Fibre optic portable rail vehicle detector

Cited by 5 publications

References 6 publications

Fiber-optic interferometric sensor for monitoring automobile and rail traffic

Fiber-optic interferometric sensor for monitoring automobile and rail traffic

Use of Fiber-Optic Sensors for the Detection of the Rail Vehicles and Monitoring of the Rock Mass Dynamic Response Due to Railway Rolling Stock for the Civil Engineering Needs

Fiber Optic Phase-Based Sensor for Detection of Axles and Wheels of Tram Vehicles

Contact Info

Product

Resources

About