Consumptive leak detection system

• US 20050190066A1
• Filed: 10/14/2004
• Published: 09/01/2005
• Est. Priority Date: 10/16/2003
• Status: Active Grant

• Current Assignee: Itron, Inc.
• Original Assignee: Itron, Inc.
• Inventors: Myers, Gregory, Schleich, Mike, Penz, Janet
• Granted Patent: US 7,119,698 B2
• Time in Patent Office: Days
• US Class Current: 340/605
• CPC Class Codes: G01M 3/2807 for pipes G01M3/2892, G01M3/30 take precedence

Abstract

The leak detection system encompasses the use of a fluid monitoring device equipped with transmission capabilities and a data acquisition device. The fluid monitoring device monitors consumption of a fluid over a predetermined time period to obtain a consumption value. The fluid monitoring device then compares the consumption value against a pre-established threshold value. If the consumption value is less than the threshold value, the fluid monitoring device produces a leak indication. The fluid monitoring device transmits the leak indication, which is received by the data acquisition device.

Claims

1. A system for detecting a leak of a monitored fluid, comprising:

a fluid monitoring device, wherein said fluid monitoring device monitors consumption of the fluid over a predetermined time period to obtain a consumption value, compares the consumption value to a threshold value, and produces a leak indication upon said consumption value being less than said threshold value; and

a data acquisition device, wherein said data acquisition device is in communication with said fluid monitoring device and receives said leak indication from said fluid monitoring device.

2. The system of claim 1, wherein said fluid monitoring device comprises a utility meter, wherein said utility meter is equipped to transmit utility meter data.

3. The system of claim 2, wherein said utility meter is equipped for one-way transmission of utility meter data.

4. The system of claim 2, wherein said utility meter is equipped for two-way transmission of utility meter data.

5. The system of claim 1, wherein said data acquisition device comprises a reader in an automatic meter reading system.

6. The system of claim 1, wherein said leak indication comprises:

a leak/no leak indicator, a difference in consumption between said consumption value and said threshold value, or both a leak/no leak indicator and a difference in consumption between said consumption value and said threshold value.

7. The system of claim 1, wherein said predetermined time period is established by designation of a sample window time and a sample period time.

8. A method for detecting a leak in a monitored fluid, the method comprising:

monitoring the consumption of a fluid over a predetermined time period to obtain a consumption value;

comparing said consumption value to a threshold value;

producing a leak indication upon said consumption value being less than said threshold value; and

transmitting said leak indication.

9. The method of claim 8, wherein said step of monitoring is performed by a utility meter.

10. The method of claim 8, wherein said step of transmitting comprises one-way transmitting of said leak indication.

11. The method of claim 8, wherein said step of transmitting comprises two-way transmitting of said leak detection.

12. The method of claim 8, wherein said step of transmitting comprises transmitting to a reader in an automatic meter reading system.

13. The method of claim 8, wherein said leak indication comprises:

a leak/no leak indicator, a difference in consumption between said consumption value and said threshold value, or both a leak/no leak indicator and a difference in consumption between said consumption value and said threshold value.

14. The method of claim 8, wherein said predetermined time period is established by designation of a sample window time and a sample period time.

15. A system for detecting a leak of a monitored fluid, comprising:

monitoring means for monitoring a fluid over a predetermined time period to obtain a consumption value, for comparing said consumption value to a threshold value, for producing a leak indication upon said consumption value being less than said threshold value, and for transmitting said leak indication; and

data means for communicating with said monitoring means and for receiving said leak indication from said monitoring means.

16. The system of claim 15, wherein said monitoring means comprises a utility meter.

17. The system of claim 15, wherein said monitoring means is equipped for one-way transmission of said leak indication.

18. The system of claim 15, wherein said monitoring means is equipped for two-way transmission of said leak indication.

19. The system of claim 15, wherein said data means comprises a reader in an automatic meter reading system.

20. The system of claim 15, wherein said leak indication comprises:

a leak/no leak indicator, a difference in consumption between said consumption value and said threshold value, or both a leak/no leak indicator and a difference in consumption between said consumption value and said threshold value.

21. The system of claim 15, wherein said predetermined time period is established by designation of a sample window time and a sample period time.