Abstract: An interactive system for a facility, such as a parking facility, a warehouse or some other type of facility, includes a user interface for detecting empty parking spaces, moving vehicles and personnel. The user interface can be associated with a “smart” light fixture or other component mounted in the parking structure. A control subsystem includes a system processor which interacts with a user interface. The user interface communicates directly with a user and with a smart card whereby parking transactions are automatically recorded and debited to an account. A key fob transmitter transmits signals to a smart fixture for summoning emergency assistance. The system processor utilizes GPS coordinates for guiding users, locating parking spaces, and identifying smart light fixtures receiving emergency assistance signals. The system can provide various information about the presence, absence and movement of vehicles and individuals within various structures.

Abstract: A light fixture with a detection system includes a sensor subsystem with vehicle and personnel sensors. The detection system also includes an indicator/display subsystem with empty space, moving vehicle and personnel present indicators. The detection system further includes a control subsystem mounted in the light fixture and connected to the sensor and indicator subsystems for actuating the indicators in response to the signal inputs from the sensors. Applications of the detection system in parking structures and industrial facilities are disclosed.

Abstract: A light fixture lens mounting system includes a lighting fixture body having an opening, a lens, and a lens mounting ring having structure for supporting the lens over the opening, the body opening and the lens mounting ring being fitted with a series of corresponding lugs for interlocking engagement. Preferably, the body lugs project outwardly from a rim to form an outwardly open groove and the ring lugs project inwardly from the ring to form an inwardly open groove to permit interlocking engagement of the body lugs in the ring groove and the ring lugs in the body groove. In particularly preferred forms, the body lugs include structure for supporting a gasket adjacent the lens to provide a weathertight seal. In other preferred forms, the body lugs extend inwardly to form an inwardly open groove, and the rings project outwardly from the ring to form an outwardly open groove to permit interlocking engagement of the body lugs in the ring groove and the ring lugs in the body groove.