Adaptive synchronized lighting
GOAL: TO SECURE ACCESS ROADS
Secure a passageway by using light energy only where and when it is needed for this function.
Connected or stand-alone, the light intensity is set according to the time of day to ensure maximum lighting during transit times and reduced power in the middle of the night.
Time slots during the assumed transit periods are illuminated when no transit occurs. This results in unnecessary energy expenditure.
A traditional solution: the time-slotted dimming is complemented by presence detection to turn on or increase power as soon as a pedestrian or vehicle enters the lighting zone.
The street lights are thus configured within an association where each member informs the rest of the group of the behaviour to adopt detections of a passage. Penetration into a detection zone or along a track is therefore reactive to the observed speed of passage. Depending on the transit speed, the streetlights will be synchronized to accompany the passenger to the detection zone, before he arrives under the streetlights and by delay after leaving the detection zone.
Since the streetlights are connected to each other by a local radio link, the intelligence embedded in each of them will operate autonomously without any external instructions to be received from a concentrator, thus independent of an external failure.
Their configuration in a mesh network from any point of the defined group, allows to resize the network at will. This same configuration ensures redundancy of the synchronization signal, even in the event of an accident along a track. The network recreating its links itself.
Hybrid power supply
The hybrid power supply objective is to minimize the energy bill of connected, new or obsolete streetlights and secure their functions.
Today, the traditional solution is to relamp with the installation of a led lantern, recharge a battery on the grid, switch to autonomous solar lighting.