Last known state across a plurality of dispersed geographic sensors synchronized to a common clock

A smart sensor device attachable to a streetlight fixture, the smart sensor device comprising:

• a GPS receiver arranged to receive GPS signals that include a distributed clock;
• a local clock circuit arranged to supply a local clock signal to circuitry of the smart sensor device, wherein the local clock signal is synchronized to the distributed clock;
• a local, non-volatile memory arranged to store sensor-based data;
• a sensor arranged to capture event data;
• a processor-based event-monitoring circuit arranged to receive the captured event data from the sensor, correlate the event data with the distributed clock based on the synchronized local clock signal, and store the correlated event data in the memory;
• and
• a transceiver arranged to transmit the stored correlated event data to a remote server.

A method comprising,

• receiving a selection of events to monitor for each of a plurality of smart sensor devices coupled to respective streetlight fixtures of a plurality of streetlight fixtures;
• providing the selection of events to the plurality of smart sensor devices;
• identifying an occurrence of an incident associated with the plurality of streetlight fixtures;
• receiving, from each of the plurality of smart sensor devices, event data that is correlated to a distributed clock received by GPS receivers of the plurality of smart sensor devices;
• aggregating the correlated event data based on the distributed clock;
• and
• generating a current state of the plurality of smart sensor devices prior to the occurrence of the incident.