Method and system for monitoring food tray activity

• US 7,489,239 B2
• Filed: 01/26/2006
• Issued: 02/10/2009
• Est. Priority Date: 01/10/2003
• Status: Expired due to Fees

• Current Assignee: Monismart Systems LLC
• Original Assignee: Monismart Systems LLC
• Inventors: Demetrops, John, Roberts, Stuart J., Schuster, Vladimir
• Primary Examiner(s): Bugg; George A
• Assistant Examiner(s): BLOUNT, ERIC
• Application Number:
  US11/340,962
• Publication Number:
  US 20060125635A1
• Time in Patent Office: 1,111 Days
• Field of Search: 340/568.1
• US Class Current: 340/568.1
• CPC Class Codes: G08B 13/1472 with force or weight detection
• CPC Class Codes: G08B 5/36 using visible light sources

Abstract

The invention relates to a method and system for monitoring tray activity in which a tray sensing device detects the presence of a tray in a given location. The tray can be a conventional tray for supporting food articles or can be supported or integral with a food cart. Information from the tray sensing device can be forwarded to a central information system. The central information system can display the information or activate an alarm. The alarm can be an audio or visual alert. The alarm can be deactivated upon removal of the tray from the given location or upon dispatching of personnel to the given location.

Claims

1. A system for monitoring tray activity in a hallway comprising:

a tray sensing device, said tray sensing device is an antenna adapted to be positioned to run along a length of said hallway, said tray sensing device adapted for sensing said tray; and

means for forwarding a control signal from said tray sensing device to a central information system upon said tray sensing device sensing said tray wherein the antenna is a flat ribbon cable.

2. The system of claim 1 further comprising:

alarm means for generating an audio alert or a visual alert, said alarm means being activated upon receipt of said control signal.

3. The system of claim 2 further comprising:

means for deactivating said alarm upon receipt of said information from said tray sensing device indicating the absence of said tray in said hallway.

4. The system of claim 2 further comprising:

means for continuing to forward said information from said tray sensing device while said tray is positioned along said length of said hallway until said tray is removed from said hallway and deactivating said alarm when said information is no longer forwarded.

5. The system of claim 2 further comprising:

means for deactivating said alarm upon dispatching of personnel to said given location.

6. The system of claim 1 wherein said tray includes a tray sensor, said tray sensor is respectively either a transmitter or a receiver for sending or receiving a signal.

7. The system of claim 1 further comprising:

a plurality of said tray sensing devices arranged in a plurality of zones, each of said tray sensing devices relaying information from said tray sensing device over a communication path to said central information system.

8. The system of claim 7 wherein said communication path is a wired connection or wireless connection.

9. A system for monitoring tray activity in a hallway comprising:

a tray sensing device for detecting the presence of the tray in the hallway said tray sensing device is an antenna of a flat ribbon cable adapted for running along a length of said hallway;

means for forwarding a control signal from said tray sensing device to a central information system upon detecting the presence of the tray; and

alarm means for generating an audio alert or a visual alert, said alarm means being activated upon receipt of said control signal.