Motion sensing system with adaptive timing for controlling lighting fixtures

A system for selectively providing power from a power source to at least one load to operate in an area for at least one occupant, comprising:

• a relay configured to provide a current conduction path between said power source and said load when in a closed position, and to interrupt said path when in an open position;
• a processing device connected to said relay for controlling when said relay is in said open position and when said relay is in said closed position;
• a memory device associated with said processing device for storing program code and at least one parameter specified by a system user, said processing device being programmable to control said relay switch in accordance with said stored program code and said parameter;
• and
• a sensor connected to said processing device for detecting when an occupant has entered said area and for providing at least one output signal to said processing device;
• wherein said processing device is programmable to close said relay in response to said output signal for a period of time not less than a first period of time equivalent to said parameter and not more than a second period of time, the duration of said second period of time being dynamically variable and determined automatically by said processing device in accordance with how often said sensor detects said at least one occupant in said area using at least one number, said number being stored in said memory device and determined by said processing device to be the duration of time elapsing between the occurrence of said sensor detecting said at least one occupant in said area, and one of initialization of said system and a prior occurrence of said sensor detecting said at least one occupant in said area.

A system for selectively providing power from a power source to a load to operate in an area for at least one occupant, comprising:

• a relay configured to provide a current conduction path between said power source and said load when in a closed position, and to interrupt said path when in an open position;
• a processing device connected to said relay for controlling when said relay is in an open position and when said relay is in a closed position;
• a sensor connected to said processing device for detecting when said occupant has entered said area and for providing at least one output signal to said processing device;
• a memory device associated with said processing device for storing program code and at least one parameter specified by a system user, said processing device being programmable to control said relay in accordance with said stored program code, said at least one parameter and said at least one output signal to close in response to said at least one output signal for a dynamically variable period of time determined automatically by said processing device in accordance with how often said sensor detects said occupant in said area using at least one number, said number being stored in said memory device and determined by said processing device to be the duration of time elapsing between the occurrence of said sensor detecting said at least one occupant in said area, and one of initialization of said system and a prior occurrence of said sensor detecting said at least one occupant in said area;
• a first switch connected to said processing device to select one of a plurality of operational modes comprising a manual mode and an automatic mode;
• and
• a second switch connected to said processing means for controlling when said processing device closes said relay depending on which of said plurality of operational modes is selected said automatic mode corresponding to a mode in which said processing device closes said relay in response to said output signal, said manual mode corresponding to a mode in which said processing device controls said relay, when open, to remain open until said second switch is activated regardless of said output signal.

A system for selectively providing power from a power source to a load to operate in an area for at least one occupant, comprising:

• a relay configured to provide a current conduction path between said power source and said load when in a closed position, and to interrupt said path when in an open position;
• a processing device connected to said relay for controlling when said relay is in an open position and when said relay is in a closed position;
• a sensor connected to said processing device for detecting when said occupant has entered said area and for providing at least one output signal to said processing device;
• a memory device associated with said processing device for storing program code and at least one parameter, said processing device being operable to control said relay in accordance with said stored program code, said at least one parameter and said at least one output signal to close in response to said at least one output signal for a dynamically variable period of time determined automatically by said processing device in accordance with how often said sensor detects said occupant in said area using at least one number, said number being stored in said memory device and determined by said processing device to be the duration of time elapsing between the occurrence of said sensor detecting said at least one occupant in said area, and one of initialization of said system and a prior occurrence of said sensor detecting said at least one occupant in said area;
• an air-gap switch;
• and
• a power supply circuit for providing power signals from said power source to said relay, said processing device, said sensor and said memory device and comprising a transformer, said air-gap switch being connected between said power source and said transformer.