Centralized route calculation for a multi-hop streetlight network

A system for monitoring and controlling streetlights, the system comprising:

• a multiplicity of streetlight controllers with each streetlight controller comprising;
• at least one switch operative to control the operation of a load, at least one sensor operative to monitor the operation of said load,
• at least one processor coupled to said switch and said sensor, and
• a radio transceiver coupled to said processor and operative to receive data representing a control action associated with said each streetlight controller and transmit data associated with said each streetlight controller in respect to said at least one sensor, and
• a local coordinator comprising;
• a local coordinator radio transceiver, and
• a local coordinator processor coupled to the coordinator radio transceiver, the local coordinator processor operative to maintain a list of the multiplicity of streetlight controllers and, cooperatively with the local coordinator radio transceiver, operative to exchange messages with any of the multiplicity of streetlight controllers and a central coordinator for facilitating monitoring and controlling of the multiplicity of streetlights;
• wherein each of the multiplicity of streetlight controllers is configured to:
• receive a first broadcast message comprising an address associated with a transmitter that transmitted the first broadcast message, and in response to the first broadcast message transmit a second broadcast message containing an address of the streetlight controller,
• record the address associated with the transmitter into a list of addresses when the first broadcast message is received and the address associated with the transmitter is not in the list of addresses, and
• in cooperation with the radio transceiver, transmit the list of addresses to the local coordinator;
• wherein the local coordinator processor is further operative to:
• maintain a connectivity model for the list of the multiplicity of streetlight controllers, the connectivity model comprising, for each of the multiplicity of streetlight controllers, a list of addresses of neighbors and, respective, link quality information;
• adjust the connectivity model to reflect a health parameter for said each of the multiplicity of streetlight controllers, the health parameter used to vary the link quality information for links associated with a corresponding streetlight controller;
• generate routes from the local coordinator to said each of the multiplicity of streetlight controllers based on the connectivity model;
• and
• transmit monitoring and control messages between the central coordinator and the multiplicity of streetlights based upon the generated routes.