Patent ID: 9142130
Filing Date: 2015-09-22
Classification: G08G

Abstract:
1. A light emitting road boundary marking device, comprising: a housing; a photovoltaic cell unit mounted in the housing and having a photovoltaic cell plate and a battery; and a light emitting unit having at least one light marker to be turned on and off based on power supplied from the photovoltaic cell unit and conditions of a control unit; the control unit having a microphone to detect a soundwave at a particular location and an audio circuit to filter and condition the detected soundwave, a waveform comparing and control circuit to positively identify a distinct complex audio waveform indicative of a wheel traveling over a rumble strip by substantially matching the detected, filtered and conditioned waveform with a pre-programmed complex waveform indicative of a wheel traveling over a rumble strip, and a driver unit to activate the light emitting unit and at least one light associated with said particular location, when the detected, filtered and conditioned waveform substantially matches said pre-programmed complex waveform; a transmitter for relaying an addressable activation signal to at least one adjacent light markers, and wherein a plurality of said light markers are networked and at least one adjacent networked marker includes an addressable receiver and a corresponding light emitting unit for illumination upon reception of the relayed activation signal that has been encoded with the correct address information; and a control and transmitter unit having the capability to adapt network address information to activate the next in a series of markers until such time that a predetermined maximum number of markers in the network activation protocol has been achieved.