An embodiment of the present invention includes a light emitting road boundary marking for activation upon road departure. The marker includes a photovoltaic cell unit mounted in a housing and having a photovoltaic cell plate and a battery. Further, a light emitting unit is mounted with the housing, and the light emitting unit has a light to be turned on and off based on electricity supplied from the photovoltaic cell unit and conditions of a control unit. The control unit includes a microphone to detect a soundwave generated by a wheel traveling over a rumble strip, a comparing circuit to substantially match the detected soundwave with a pre-programmed soundwave pattern, and a driver unit to activate the light emitting unit when the detected soundwave substantially matches the pre-programmed soundwave. Other embodiments may include a microprocessor, a transmitter and a receiver unit for relaying an activation signal to adjacent markers, a lamp flashing circuit, and switching circuits for roadway illumination lamps.
Light emitting road safety device with sound activation
2015-09-22
Patent
Elektronische Ressource
Englisch
IPC: | B60Q ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL , Anordnung von Signal- oder Beleuchtungsvorrichtungen, deren Einbau oder Halterung oder deren Schaltkreise bei Fahrzeugen allgemein / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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