Meter register transmitting flow rate warning

• US 8,109,131 B2
• Filed: 01/14/2008
• Issued: 02/07/2012
• Est. Priority Date: 03/09/2001
• Status: Expired

• Current Assignee: Arad Measuring Technologies Ltd
• Original Assignee: Arad Measuring Technologies Ltd
• Inventors: Winter, Dan
• Primary Examiner(s): Caputo, Lisa
• Assistant Examiner(s): ROY, PUNAM P
• Application Number:
  US12/013,853
• Publication Number:
  US 20080209985A1
• Time in Patent Office: 1,485 Days
• Field of Search: 738/618.8, 738/619.4, 73/405.R, 73/491
• US Class Current: 73/40.5R
• CPC Class Codes: G01D 4/006 Remote reading of utility meters to a non-fixed location, i.e. mobile location
• CPC Class Codes: G01D 5/12 using electric or magnetic means G01D5/06 takes precedence
• CPC Class Codes: G01D 5/2515 with magnetically controlled switches, e.g. by movement of a magnet
• CPC Class Codes: G01F 1/075 with magnetic or electromagnetic coupling to the indicating device
• CPC Class Codes: G01F 1/56 by using electric or magnetic effects G01F1/66 takes precedence
• CPC Class Codes: G01F 15/007 comprising means to prevent fraud
• CPC Class Codes: G01F 15/063 using electrical means
• CPC Class Codes: G01F 15/0755 involving digital counting
• CPC Class Codes: G08B 21/18 Status alarms G08B21/02 takes precedence
• CPC Class Codes: H01Q 1/22 by structural association with other equipment or articles
• CPC Class Codes: H01Q 1/2233 used in consumption-meter devices, e.g. electricity, gas or water meters
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 9/0407 Substantially flat resonant element parallel to ground plane, e.g. patch antenna dipole H01Q9/285; monopole H01Q9/40
• CPC Class Codes: H01Q 9/0414 in a stacked or folded configuration
• CPC Class Codes: H01Q 9/0421 with a shorting wall or a shorting pin at one end of the element H01Q9/0414 takes precedence
• 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 method and apparatus for measuring a fluid and determining a leak comprising the steps of providing a meter and a meter register coacting with the meter. When a leak is detected, a signal is transmitted from the meter register regarding fluid consumption. The transmitted signal indicates a leak either when the measured flow rate remains a fixed volume over a fixed period of time, or the measured flow rate exceeds a threshold value.

Claims

1. A method of detecting a leak in a liquid consumption system, comprising the following steps:

providing a meter housing having a liquid inlet opening, a liquid outlet opening, a measuring chamber between, and in fluid communication with, the liquid inlet and the liquid outlet openings, and a cavity having an access opening;

providing a sealed meter register in the access opening of the meter housing, wherein the meter register comprises a microprocessor and the meter register is magnetically coupled with the measuring chamber to coact with the measuring chamber to receive liquid flow information from the measuring chamber, wherein the microprocessor of the meter register receives the liquid flow information and measures the amount of liquid flowing through the measuring chamber as a function of time defined as a measured flow rate;

passing a liquid from a liquid source, through the liquid inlet opening of the meter, through the measuring chamber of the meter and through the liquid outlet opening of the meter to the liquid consumption system, wherein as the liquid moves though the measuring chamber, the measuring chamber generates the liquid flow information, and the microprocessor provides the measured flow rate; and

generating a signal indicating a leak when the measured flow rate is greater than zero and when one of the following events occurs;

(i) the measured flow rate remains constant over a fixed period of time, or

(ii) the measured flow rate exceeds a threshold flow rate value.

2. The method as claimed in claim 1, further comprising the steps of transmitting information when said meter has been tampered with.

3. The method as claimed in claim 1, further comprising

transmitting information when said meter has been tampered with, wherein said tampering comprises subjecting said meter register to a magnetic field above a threshold value.

4. The method as claimed in claim 1, wherein said meter is adapted to receive signals from an external source.

5. The method as claimed in claim 1, further comprising the step of providing shut-off means in a liquid line which is coupled to said meter and opening and closing said shut-off means depending on the volume of liquid passing through said meter.

6. The method as claimed in claim 1, wherein the transmitted signal is an identification signal.

7. The method as claimed in claim 1, wherein the liquid is water.

8. The method as claimed in claim 1, wherein the meter register and meter are part of an automated meter reading system.

9. The method as claimed in claim 1, wherein the signal is transmitted to indicate a leak when the measured flow rate is greater than zero and the measured flow rate remains constant over a fixed period of time.

10. The method as claimed in claim 1, wherein the signal is transmitted to indicate a leak when the measured flow rate is greater than zero and the measured flow rate exceeds a threshold value.

11. A method of detecting a leak in a fluid consumption system, comprising the following steps:

providing a fluid meter to pass a fluid from a fluid source, through the meter to the fluid consumption system;

providing a meter register to coact with the meter to measure the amount of fluid flowing through the meter from the fluid source to the fluid consumption system;

providing a microprocessor to receive fluid flow information from the meter register to measure the amount of fluid moving through the meter from the fluid source to the fluid consumption system as a function of time defined as a measured flow rate;

generating a transmitted signal indicating a leak when the measured flow rate is greater than zero and when one of the following events occurs;

(i) the measured flow rate remains constant a fixed volume over a fixed period of time, or

(ii) the measured flow rate exceeds a threshold flow rate value, and

said method further comprises the step of determining reverse flow through said meter and transmitting such information.

12. A method of detecting a leak in a liquid consumption system, comprising the following steps:

providing a meter having a measuring chamber, wherein a liquid passes from a liquid source, through the measuring chamber of the meter to the liquid consumption system;

providing a meter register having a microprocessor, wherein the meter register is magnetically coupled with the measuring chamber to coact with the meter to measure the amount of liquid flowing from the liquid source through the meter to the liquid consumption system, and wherein the microprocessor receives liquid flow information from the meter register to measure the amount of liquid from the liquid source moving through the meter to the liquid consumption system as a function of time defined as a measured flow rate; and

generating a signal indicating a leak when the measured flow rate is greater than zero and when one of the following events occurs;

(i) the measured flow rate remains constant over a fixed period of time, or

(ii) the measured flow rate exceeds a threshold flow rate value,

wherein said signal includes information corresponding to an odometer reading on said meter.

13. A method of detecting a leak in a liquid consumption system, comprising the following steps:

providing a meter adapted to receive signals from an external source, the meter having a measuring chamber, wherein a liquid passes from a liquid source, through the measuring chamber of the meter to the liquid consumption system;

providing a meter register having a microprocessor, wherein the meter register is magnetically coupled with the measuring chamber to coact with the meter to measure the amount of liquid flowing from the liquid source through the meter to the liquid consumption system, and wherein the microprocessor receives liquid flow information from the meter register to measure the amount of liquid from the liquid source moving through the meter to the liquid consumption system as a function of time defined as a measured flow rate; and

generating a signal indicating a leak when the measured flow rate is greater than zero and when one of the following events occurs;

(i) the measured flow rate remains constant over a fixed period of time, or

(ii) the measured flow rate exceeds a threshold flow rate value, and

transmitting to the meter a first signal from the external source to adjust a transmitting second signal from the meter, the second signal indicating an odometer reading.