IR sensor array configuration and signal processing for detecting obstacles in railways

This work describes a sensor array based on optical emitters, which allows to detect obstacles in railways. The sensorial system consists of a barrier of emitters and another of receivers, placed at opposite sides of the railway. Apart from the disposition of the sensorial system, it is necessary a...

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Bibliographic Details
Published in2004 IEEE Sensor Array and Multichannel Signal Processing Workshop pp. 216 - 220
Main Authors Garcia, J.J., Urena, J., Hernandez, A., Mazo, M., Garcia, Alvarez, F., Jimenez, J.A., Donato, P., Perez, M.C.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2004
Subjects
Array signal processing
Infrared detectors
Infrared sensors
Optical arrays
Optical receivers
Optical sensors
Optical signal processing
Rail transportation
Sensor arrays
Sensor phenomena and characterization
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Summary:This work describes a sensor array based on optical emitters, which allows to detect obstacles in railways. The sensorial system consists of a barrier of emitters and another of receivers, placed at opposite sides of the railway. Apart from the disposition of the sensorial system, it is necessary a codification method for the emission in order to detect the reception or the non-reception of transmissions between an emitter and a receiver. The method is based on a signal codification using complementary sequence pairs, suitably adapted for their simultaneous emission through the transmission channel. A high reliability under adverse conditions is achieved with the developed system, being possible to detect the presence of obstacles, and to inform about their situation.
ISBN:9780780385450
0780385454
DOI:10.1109/SAM.2004.1502940