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Conference Paper: LED Traffic Light as Communication Device

TitleLED Traffic Light as Communication Device
Authors
KeywordsTransportation
Issue Date1999
PublisherIEEE.
Citation
IEEE/IEEJ/JSAI International Conference on Intelligent Transportation Systems Proceedings, Tokyo, Japan, 5-8 October 1999, p. 788-793 How to Cite?
AbstractThe visible light from an LED (light emitting diode) traffic light can be modulated and encoded with information. Hence, it can be used for the broadcasting of audio messages or any traffic or road information. Essentially all LED traffic lights can be used as communications devices. The paper focuses on the description of an audio information system made up of high brightness, visible light emitting diodes (LEDs) in which one or more LEDs are modulated and encoded with audio messages. The system also comprises a receiver combined with a speaker which is located at a distance from the LED traffic light. The receiver is designed to demodulate the optically transmitted audio information and broadcast the messages with the speaker. The optical link employs intensity modulation with direct detection. The audio information system implemented on an LED traffic light can provide the function of open space, wireless broadcasting of audio messages.
Persistent Identifierhttp://hdl.handle.net/10722/46164

 

DC FieldValueLanguage
dc.contributor.authorPang, GKHen_HK
dc.contributor.authorKwan, TOen_HK
dc.contributor.authorChan, CHen_HK
dc.contributor.authorLiu, HSen_HK
dc.date.accessioned2007-10-30T06:43:53Z-
dc.date.available2007-10-30T06:43:53Z-
dc.date.issued1999en_HK
dc.identifier.citationIEEE/IEEJ/JSAI International Conference on Intelligent Transportation Systems Proceedings, Tokyo, Japan, 5-8 October 1999, p. 788-793en_HK
dc.identifier.urihttp://hdl.handle.net/10722/46164-
dc.description.abstractThe visible light from an LED (light emitting diode) traffic light can be modulated and encoded with information. Hence, it can be used for the broadcasting of audio messages or any traffic or road information. Essentially all LED traffic lights can be used as communications devices. The paper focuses on the description of an audio information system made up of high brightness, visible light emitting diodes (LEDs) in which one or more LEDs are modulated and encoded with audio messages. The system also comprises a receiver combined with a speaker which is located at a distance from the LED traffic light. The receiver is designed to demodulate the optically transmitted audio information and broadcast the messages with the speaker. The optical link employs intensity modulation with direct detection. The audio information system implemented on an LED traffic light can provide the function of open space, wireless broadcasting of audio messages.en_HK
dc.format.extent633929 bytes-
dc.format.extent4651 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE/IEEJ/JSAI International Conference on Intelligent Transportation Systems Proceedings-
dc.rights©1999 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectTransportationen_HK
dc.titleLED Traffic Light as Communication Deviceen_HK
dc.typeConference_Paperen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/ITSC.1999.821161en_HK
dc.identifier.hkuros50486-

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