System and method utilizing virtual switching for electrical panel metering

• US 7,155,350 B2
• Filed: 07/22/2004
• Issued: 12/26/2006
• Est. Priority Date: 07/22/2004
• Status: Active Grant

• Current Assignee: EI Electronics LLC (Hubbell, Inc.)
• Original Assignee: Electro Industries/Gaugetech
• Inventors: Kagan, Erran
• Primary Examiner(s): WACHSMAN, HAL D
• Application Number:
  US10/896,489
• Publication Number:
  US 20060020405A1
• Time in Patent Office: 887 Days
• Field of Search: 702/57, 702 60- 62, 702/64, 702/65, 702/75, 702/76, 702/79, 702/122, 702/187, 702/188, 324/114, 324/115, 324/103.R, 324/110, 324/140.R, 324/141, 324/142, 324/116, 705/412, 705/401, 705/410, 705/63, 705/60
• US Class Current: 702/57
• CPC Class Codes: G01R 15/002 Switches for altering the measuring range or for multitesters
• CPC Class Codes: G01R 21/133 by using digital technique
• CPC Class Codes: G01R 21/1335 Tariff switching circuits
• CPC Class Codes: G01R 22/10 using digital techniques

Abstract

A system and method utilizing virtual switching in an electrical panel meter. The virtual switching enables the meter to be upgraded or downgraded through a switching signal, by activating or deactivating the metering functions that are to be performed in the meter. Accordingly, when the upgrade or downgrade is necessary, the meter does not have to be replaced.

Claims

1. An electrical metering device for controlling multiple metering functions comprising:

a function operating unit storing the multiple metering functions; and

a virtual switching unit including a plurality of virtual switches, each virtual switch corresponding to each available metering function for selectively activating and deactivating the corresponding metering function,

wherein the virtual switching unit is configured for receiving a single switching signal indicating which of at least two of the available metering functions are to be activated and activating or deactivating the corresponding virtual switches.

2. The device of claim 1, further comprising:

a memory for storing readings of the multiple metering functions; and

a display for displaying the readings of the multiple metering functions.

3. The device of claim 2, wherein the display comprises a touch screen.

4. The device of claim 1, wherein the virtual switching unit is provided with software operative to selectively active and deactivate the multiple metering functions in response to the single switching signal.

5. The device of claim 1, wherein the virtual switching unit is provided with hardware operative to selectively active and deactivate the multiple metering functions in response to the single switching signal.

6. The device of claim 1, wherein the multiple metering functions are selected from the group consisting of measuring voltage, current, vars, frequency, power, watt-hours, vars/hours, demand, harmonics and a combination thereof.

7. The device of claim 1, wherein the single switching signal is transmitted to the device via one of the internet, a telephone line, a direct communication line, and wireless transmission.

8. The device of claim 1, wherein the single switching signal includes a unique code associated with the device.

9. The device of claim 1, further comprising an input device configured to select the at least two available metering functions, wherein the single switching signal is generated by the device based on the selected at least two available metering functions.

10. In an electrical metering device including a function unit storing multiple metering functions and a virtual switching unit including a plurality of virtual switches, each virtual switch corresponding to each available metering function for selectively activating and deactivating the corresponding metering function, a method of controlling the multiple metering functions consisting of:

receiving a single switching signal indicating which of at least two of the available metering functions are to be activated;

selectively activating and deactivating each virtual switch corresponding to the at least two available metering function according to the single switching signal; and

performing the multiple metering functions corresponding to the activated virtual switches.

11. The method of claim 10, further comprising:

storing readings of the multiple metering functions; and

displaying the readings of the multiple metering functions.

12. The method of claim 11, wherein the readings are displayed on a touch screen.

13. The method of claim 10, wherein the step of selectively activating and deactivating each virtual switch according to the received single switching signal is performed by software.

14. The method of claim 10, wherein the step of selectively activating and deactivating each virtual switch according to the received single switching signal is performed by hardware.

15. The method of claim 10, wherein the multiple metering functions are selected from the group consisting of measuring voltage, current, watts, vars, frequency, power, watt-hours, demand, harmonics and a combination thereof.

16. In an electrical metering device including a function unit storing multiple metering functions and a virtual switching unit including a plurality of virtual switches, each virtual switch corresponding to each available metering function for selectively activating and deactivating the corresponding metering function, a method of upgrading the metering device comprising the steps:

presenting a list of available metering functions;

enabling or disabling at least two available metering functions from the presented list;

generating a single switch signal for activating each virtual switch corresponding to each enabled metering function and deactivating each virtual switch corresponding to each disabled metering function; and

receiving the single switch signal by the virtual switching unit;

determining which of the at least two available metering functions is enabled or disabled; and

selectively activating each virtual switch corresponding to each enabled metering function and deactivating each virtual switch corresponding to each disabled metering function.

17. The method of claim 16, further comprising charging a user based on a number of the multiple metering functions that are enabled.

18. The method of claim 16, wherein the metering device further comprises a display configured for presenting the list and an input device configured for enabling or disabling the at least two available metering functions, wherein the single switch signal is generated in the metering device.

19. The method of claim 16, further comprising:

storing readings of the multiple metering functions; and

displaying the readings of the multiple metering functions.

20. The method of claim 16, wherein the single switch signal is transmitted to the metering device.

21. The method of claim 20, wherein the single switch signal is transmitted to the metering device via one of the Ethernet and wireless transmission.