Occupancy status indicator

An occupancy status indicator, comprising:

• a motion detector for detecting motion in an enclosed space and thus the presence of a person in said space;
• a proximity detector for detecting the passage of said person through a doorway of said space;
• an indicator including a first color lamp, a second color lamp, a third color lamp, and a beeper;
• and
• a control unit connected to said motion detector, said proximity detector, and said indicator, said control unit being arranged to:
• activate said third color lamp when said motion detector detects motion in said space for indicating that said space is occupied by said person;
• deactivate said third color lamp when said motion detector detects no motion in said space and said proximity detector detects the passage of said person through said doorway, and activate said second color lamp in a first mode for indicating that said person has left said space for a short duration;
• activate said second color lamp in a second mode after said passage of said person through said doorway and said motion detector detects no motion in said space for a predetermined period for indicating that said person has left said space for a longer duration;
• and
• activate said first color lamp and said beeper when said motion detector detects no motion in said space and said proximity detector detects no one passing through said doorway for indicating an emergency in said space.

An occupancy status indicator, comprising:

• a motion detector for detecting motion in an enclosed space and thus the presence of a person in said space;
• a proximity detector for detecting the passage of a person through a doorway of said space;
• an indicator including a first color lamp, a second color lamp, a third color lamp, and a beeper;
• a concealed switch for sending a silent alert to a remote location,
• a control unit connected to said motion detector, said proximity detector, said indicator, and said concealed switch, said control unit including a first color illuminated button, a second color illuminated button, and a third color illuminated button which are respectively illuminated simultaneously with said first color lamp, said second color lamp, and said third color lamp, and a communications link for being connected to a communications network, said control unit being arranged to:
• activate said third color lamp in a first mode when said motion detector detects motion in said space for indicating that said space is occupied by said person;
• activate said third color lamp in a second mode when said third color illuminated button is pressed for indicating that said person wishes not to be disturbed;
• activate said first color lamp and said beeper when said motion detector detects no motion in said space and said proximity detector detects no one passing through said doorway for indicating an emergency in said space;
• activate said first color lamp and said beeper when said first color illuminated button is pressed for indicating said emergency in said space;
• activate said second color lamp in a first mode when said second color illuminated button is pressed once for indicating that said person has left said space for a short duration;
• activate said second color lamp in a second mode after said passage of said person through said doorway and said motion detector detects no motion in said space for a predetermined period for indicating that said person has left said space for a longer duration;
• activate said second color lamp in said second mode when said second color illuminated button is pressed a second time for indicating that said person has said left space for said longer duration;
• activate said third color lamp in said first mode when said third color illuminated button is pressed once while said second color lamp is activated in said second mode for indicating that said space is occupied by a visitor when said person is absent;
• activate said third color lamp in said second mode when said third color illuminated button is pressed a second time while said second color lamp is activated in said second mode for indicating that said visitor wishes not to be disturbed;
• send a silent alert to a remote location through said communications link when said concealed switch is activated;
• communicate occupancy status of said space to said communications network;
• and
• reset an internal clock in said control unit when said second and third color illuminated buttons are pushed simultaneously.

An occupancy status indicator, comprising:

• a motion detector for detecting motion in an enclosed space and thus the presence of a person in said space;
• a proximity detector for detecting the passage of said person through a doorway of said space;
• an indicator;
• and
• a control unit connected to said motion detector, said proximity detector, and said indicator, said control unit being arranged to:
• activate said indicator in a first mode when said motion detector detects motion in said space for indicating that said space is occupied by said person;
• activate said indicator in a second mode when said motion detector no longer detects motion in said space and said proximity detector detects no one having passed through said doorway for indicating an emergency in said space;
• and
• deactivate said indicator when said motion detector detects no motion in said space and said proximity detector detects that said person has passed through said doorway for indicating that said person has left said space.

An occupancy status indicator, comprising:

• a motion detector for detecting motion in an enclosed space and thus the presence of a person in said space;
• a proximity detector for detecting the passage of said person through a doorway of said space;
• an indicator including a lamp;
• and
• a control unit connected to said motion detector, said proximity detector, and said indicator, said control unit being arranged to:
• activate said lamp in a first mode when said motion detector detects motion in said space for indicating that said space is occupied by said person;
• activate said lamp in a second mode when said motion detector no longer detects motion in said space and said proximity detector detects no one having passed through said doorway for indicating an emergency in said space;
• and
• deactivating said lamp when said motion detector no longer detects motion in said space and said proximity detector detects that said person has passed through said doorway for indicating that said person has left said space.

An occupancy status indicator, comprising:

• a motion detector for detecting motion in an enclosed space and thus the presence of a person in said space;
• a proximity detector for detecting the passage of said person through a doorway of said space;
• a computer containing control firmware connected to said motion detector and said proximity detector, said computer including a display, said computer being arranged to:
• display a signal on said display in a first mode when said motion detector detects motion in said space for indicating that said space is occupied by said person;
• display said signal on said display in a second mode when said motion detector no longer detects motion in said space and said proximity detector detects no one having passed through said doorway for indicating an emergency in said space;
• and
• deactivate said signal on said display when said motion detector no longer detects motion in said space and said proximity detector detects that said person has passed doorway for indicating that said person has left said space.