Remote metering display with motion sensor

• US 7,185,281 B2
• Filed: 01/18/2001
• Issued: 02/27/2007
• Est. Priority Date: 01/18/2001
• Status: Expired due to Term

• Current Assignee: Square D Company (Schneider Electric SE)
• Original Assignee: Square D Company (Schneider Electric SE)
• Inventors: Thurmond, M. Jason, Pyle, Michael W., Lutz, Eric M., McMahon, Ken L., Farago, Jeff J., McComas, Don T.
• Primary Examiner(s): Luu; Sy D.
• Application Number:
  US09/765,860
• Publication Number:
  US 20020126157A1
• Time in Patent Office: 2,231 Days
• Field of Search: 715/700, 715/867, 715/810, 715/835, 715/854, 702/188
• US Class Current: 715/700
• CPC Class Codes: G01D 2204/18 Remote displaying of utility meter readings
• CPC Class Codes: G01D 4/002 Remote reading of utility meters
• CPC Class Codes: H04Q 9/02 Automatically-operated arrangements
• CPC Class Codes: Y02B 90/20 Smart grids as enabling technology in buildings sector smart grids supporting the management or operation of end-user stationary applications in general, or like technologies with no associated climate change mitigation effect Y04S20/00
• CPC Class Codes: Y04S 20/30 Smart metering, e.g. specially adapted for remote reading

Abstract

A remote metering display is used for displaying power-related information generated by a power meter linked to the display. The remote metering display comprises a display screen, a plurality of user interface buttons for navigating through menu options depicted on the display screen, and a motion sensor for activating the display screen in response to detection of a person'"'"'s presence within a predetermined distance of the motion sensor.

Claims

1. A method of remotely monitoring electrical power in an electrical circuit, comprising:

coupling a power meter in a switchgear to an electrical circuit for sensing power-related signals in said electrical circuit and generating power-related information based on said power-related signals;

connecting a metering display that is remote from said power meter to said power meter, said remote metering display including;

a display screen for presenting, without user interaction, at least some of said power-related information when said display screen is powered on;

a plurality of user interface buttons for navigating through menu options depicted on the display screen; and

a motion sensor for powering on the display screen in response to detection of a person'"'"'s presence within a predetermined distance of said remote metering display;

accessing said power-related information by navigating through menu options on said display screen; and

viewing from said distance at least some of said power-related information.

2. The method of claim 1, wherein said display screen is a vacuum florescent display screen.

3. The method of claim 1, including powering off said display screen in response to no motion being detected by the motion sensor and none of said user interface buttons being pressed for a predefined period of idle time.

4. The method of claim 3, wherein said predefined period of idle time is definable in one of said menu options using said user interface buttons.

5. The method of claim 1, wherein said motion sensor includes a plurality of selectable sensitivity levels for varying the predetermined distance, and further, selecting one of the sensitivity levels of said menu options using said user interface buttons.

6. The method of claim 1, wherein said motion sensor senses infrared waves projected from a person'"'"'s body.

7. The method of claim 1, wherein said motion sensor includes a pyroelectric detector for sensing infrared waves projected from a person'"'"'s body, and includes a fresnel lens for focalizing the infrared waves to a window area of said pyroelectric detector.

8. The method of claim 7, wherein said pyroelectric detector generates an analog output signal, and wherein said motion sensor further includes an analog-to-digital converter for receiving and digitizing the analog output signal.

9. A remote metering display for displaying power-related information generated by a separate power meter remotely linked to the metering display that is remote from the power meter and located in a switchgear, the remote metering display comprising:

a processing unit;

a display screen coupled to the processing unit for presenting, without user interaction, at least some of said power-related information from said remotely linked power meter when said display screen is powered on;

a plurality of user interface buttons, coupled to the processing unit, for navigating through menu options depicted on the display screen; and

a motion sensor, coupled to the processing unit, for powering on the display screen in response to detection of a person'"'"'s presence within a predetermined distance of said remote metering display, said powering on allowing viewing from said distance at least some of said power-related information.

10. The display of claim 9, wherein the display screen is a vacuum florescent display screen.

11. The display of claim 9, wherein the display screen is powered off by the processing unit in response to no motion being detected by the motion sensor and none of the user interface buttons being pressed for a predefined period of idle time.

12. The display of claim 11, wherein the predefined period of idle time is definable in one of the menu options using the user interface buttons.

13. The display of claim 9, wherein the motion sensor includes a plurality of selectable sensitivity levels for varying the predetermined distance, one of the sensitivity levels being selected in one of the menu options using the user interface buttons.

14. A power metering arrangement, comprising:

a power meter, coupled to a power line and located in a switchgear, for sensing power-related signals traveling through the power line and for generating power-related information based on the power-related signals; and

a remote metering display for displaying the power-related information, the remote metering display being remotely linked to the power meter, the remote metering display including;

a display screen for presenting, without user interaction, at least some of said power-related information when said display screen is powered on;

a plurality of user interface buttons for navigating through menu options depicted on the display screen; and

a motion sensor for powering on the display screen in response to detection of a person'"'"'s presence within a predetermined distance of said remote metering display, said powering on allowing viewing from said distance at least some of said power-related information.

15. The display of claim 14, wherein the display screen is a vacuum florescent display screen.

16. The display of claim 14, wherein the display screen is powered off in response to no motion being detected by the motion sensor and none of the user interface buttons being pressed for a predefined period of idle time.

17. The display of claim 16, wherein the predefined period of idle time is definable in one of the menu options using the user interface buttons.

18. The display of claim 14, wherein the motion sensor includes a plurality of selectable sensitivity levels for varying the predetermined distance, one of the sensitivity levels being selected in one of the menu options using the user interface buttons.