Utility meter remote reader

• US 6,674,371 B1
• Filed: 08/18/2000
• Issued: 01/06/2004
• Est. Priority Date: 08/18/2000
• Status: Expired due to Term

• Current Assignee: Credit Suisse First Boston Mortgage Capital LLC (Credit Suisse)
• Original Assignee: Hersey Meter Company
• Inventors: Middleton, Michael, Oliver, Stewart
• Primary Examiner(s): Horabik, Michael
• Assistant Examiner(s): WONG, ALBERT KANG
• Application Number:
  US09/640,864
• Time in Patent Office: 1,236 Days
• Field of Search: 340/870.02, 340/870.03, 340/870.37, 341/15, 341/16, 341/192, 341/173, 250/231.13
• US Class Current: 340/870.02
• CPC Class Codes: G01D 4/002 Remote reading of utility meters
• 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 utility meter reading device includes a set of stator wheels each including a plurality of conductive segments and a set of indexable digit discs driven sequentially by consumption of a provided utility and having each a conductive segment movable upon rotation of a respective disc into capacitive alignment with one of the conductive segments of a stator wheel; a micro-controller supplies a current signal to the meter discs and stators and through a circuit reads the amount of the utility consumed as reflected in the alignment of certain ones of the conductive segments of the discs and stator wheels.

Claims

1. A utility data gathering system for measuring the consumption of a provided utility comprising:

at least one stator wheel comprising a plurality of conductive elements, wherein said stator wheel is centered about an axis;

a digit wheel comprising at least one conductive element, wherein said digit wheel is rotatable about said axis;

a microprocessor operable for applying a current sequentially to each of said conductive elements of the stator wheel;

reading an output capacitance signal value along a region around the axis of the stator wheel wherein the signal is generated when at least one of said conductive elements of the digit wheel is proximate to at least one of said conductive elements of the stator wheel, said output capacitance signal having a value proportional to the distance of said conductive elements of the digit wheel; and

comparing each of the output capacitance values to determine the position of said digit wheel wherein the position of said digit wheel relative to said stator wheel is a specific quantity related to said consumption of the provided utility.

2. The invention as claimed in claim, 1 wherein each said stator wheel includes at least ten conductive members.

3. The invention as claimed in claim 1 wherein said discs ad said stator wheels are not in contact with each other.

4. The invention as claimed in claim 1 wherein said circuit includes a controller for directing a signal sequentially to each conductive member of said stator wheel in sequence and for determining said relative capacitance relation.

5. The invention as claimed in claim 1 wherein said circuit delivers a signal of at least 455 K to each said conductive member of said stator wheels.

6. A utility data gathering system comprising:

a plurality of discs wherein rotation of said discs reflect a quantity of consumption of the provided utility in increments of measure,

a plurality of stator wheels wherein each said disc is associated with a said stator wheel,

wherein said stator wheels include a plurality of circumferentially spaced conductive members and said discs include a single conductive member, and

a circuit that delivers a signal to every said conductive member of said stator wheels to establish a relative capacitance relation between every said conductive member of said stator wheel and said conducive member of said associated discs wherein said relative capacitance relation determines said position of said discs and to determine said quantity of consumption of the provided utility in increments of measurement,

wherein said disc and said stator wheel include a slip ring segment, wherein said signal is returned to said circuit by capacitance coupling between said slip ring of said stator wheel and said slop ring of said associated disc.

7. The invention as claimed in claim 6 wherein each said stator wheel includes at least ten conductive members.

8. The invention as claimed in claim 6, wherein said signal is at least 455 MHz to said stator wheels.

9. The invention as claimed in claim 6, wherein said discs and said stator wheels are not in contact with each other.

10. A utility data gathering system comprising:

a plurality of discs wherein rotation of said discs reflect a quantity of consumption of the provided utility in increments of measure,

a plurality of stator wheels wherein each said disc is associated with a said stator wheel,

wherein said stator wheels include a plurality of circumferentially spaced conductive members and said discs include a single conductive member, and

a circuit that delivers a signal to said stator wheels to determine said quantity of consumption of the provided utility in increments of measurement,

wherein at least two discs are provided with a stator wheel intermediate said two discs so that at least one said stator wheel is associated with two said discs.

11. The invention as claimed in claim 10 wherein each said stator wheel includes at least ten conductive members.

12. The invention as claimed in claim 10, wherein said signal is at least 455 KHz to said stator wheels.

13. The invention as claimed in claim 10, wherein said discs and said stator wheels are not in contact with each other.