Smart stadium applications using fiber optic sensing
Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously are employed in smart stadium or other venue applications, such applications including: parking lot security and management; intrusion detection; social sensing; air quality monitoring and early fire detection—among others.
1. A distributed fiber optic sensing (DFOS) system for parking lot monitoring and control, said system comprising:
a length optical fiber cable installed throughout selected areas of the parking lot;
a DFOS interrogator system in optical communication with the optical fiber cable; and
an intelligent analyzer configured to analyze DFOS sensing data received by the DFOS interrogator system, said analyzer configured to track vehicles entering and track vehicles exiting the parking lot and provide occupancy detection and parking hours monitoring for individual parking spaces in the parking lot from the analyzed sensing data.
2. The DFOS system of claim 1 wherein the vehicles enter and exit the parking lot through a gate.
3. The DFOS system of claim 2 wherein the vehicles are only allowed to enter the parking lot when the number of vehicles in the lot are less than a pre-determined threshold number.
4. The DFOS system of claim 2 wherein the system determines if a succeeding vehicle is attempting to enter the lot during an authorization of a preceding vehicle.
5. The DFOS system of claim 1 including distributed vibration sensing (DVS) and distributed strain sensing (DSS).
6. The DFOS system of claim 1 including a length of underground optical fiber and a length of overhead optical fiber.
7. The DFOS system of claim 6 wherein the overhead optical fiber is a distributed acoustic sensing (DAS) medium that detects sounds in the parking lot.