IP Library Granted Patent US 7,228,726
Granted Patent B2
US 7,228,726 · App. 10/948,628 · Granted Jun 12, 2007

System and method for utility metering and leak detection

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Quick Facts
Patent No.
US 7,228,726
App. No.
10/948,628
Granted
Jun 12, 2007
Kind
B2
Abstract

The system and method for detecting water and/or gas leaks by monitoring usage patterns is described. In one embodiment, the existence of a leak is detected by looking for usage patterns wherein water or gas is always being used, at least at a low rate. A leak is indicated if usage does not drop to zero, at least for a period of time, during a given time interval (e.g., during a 24-hour period). The severity of the leak is indicated by the minimum amount of usage during the given time period. In one embodiment, the leak detection system is provided in connection with an Automatic Meter Reading (AMR) system.

Claims (17)

1. A sensor system, comprising:

a monitoring unit comprising at least one sensor configured to sense a utility meter reading, said monitoring unit configured to monitor said utility meter at desired intervals, to record a minimum utility usage and to determine a likelihood of a utility leak, said monitoring unit configured to report data measured by said at least one sensor in response to a read request.

2. The sensor system of claim 1 , wherein said at least one sensor comprises an optical sensor.

3. The sensor system of claim 1 , wherein said at least one sensor comprises an imaging sensor.

4. The sensor system of claim 1 , wherein said at least one sensor comprises an illumination source.

5. The sensor system of claim 1 , wherein said at least one sensor comprises an acoustic sensor.

6. The sensor system of claim 1 , wherein said at least one sensor comprises an electronic utility meter interface.

7. The sensor system of claim 1 , wherein said at least one sensor comprises a recorder interface.

8. The sensor system of claim 1 , wherein said at least one sensor comprises a water flow sensor.

9. The sensor system of claim 1 , wherein said at least one sensor comprises a gas flow sensor.

10. The sensor system of claim 1 , wherein said sensor system determines a likelihood of a utility leak according to a threshold test.

11. The sensor system of claim 10 , wherein said threshold test comprises a high threshold level.

12. The sensor system of claim 10 , wherein said threshold test comprises a low threshold level.

13. The sensor system of claim 10 , wherein said threshold test comprises an inner threshold range.

14. The sensor system of claim 10 , wherein said threshold test comprises an outer threshold range.

15. The sensor system of claim 1 , wherein said monitoring unit is configured to receive an instruction to change a status reporting interval.

16. The sensor system of claim 1 , wherein said monitoring unit is configured to receive an instruction to change a sensor data reporting interval.

Assignments (7)
CHANGE OF NAME Recorded Oct 5, 2017
From: GOOGLE INC.
To: GOOGLE LLC
Reel/Frame 044127/0735 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 19, 2014
From: NEST LABS, INC.
To: GOOGLE INC.
Reel/Frame 033568/0693 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INADVERTENT PATENT NO. 8,101,892 TO BE REMOVED PREVIOUSLY RECORDED AT REEL: 031658 FRAME: 0179. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Jul 29, 2014
From: KATES, LAWRENCE
To: NEST LABS, INC.
Reel/Frame 033452/0413 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INADVERTENT ADDITION OF U.S. PATENT NO. 8,101,892 TO THE LIST. ALL OTHER NUMBERS REMAIN AS PREVIOUSLY RECORDED ON REEL 031658 FRAME 0093. ASSIGNOR(S) HEREBY CONFIRMS THE U.S. PATENT NO. 8,101,892 IS TO BE REMOVED. Recorded Jul 28, 2014
From: KNOBBE, MARTENS, OLSON & BEAR LLP
To: NEST LABS, INC.
Reel/Frame 033429/0848 →
RELEASE OF SECURITY INTEREST Recorded Nov 18, 2013
From: KNOBBE, MARTENS, OLSON & BEAR LLP
To: NEST LABS, INC.
Reel/Frame 031658/0093 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 18, 2013
From: KATES, LAWRENCE
To: NEST LABS, INC.
Reel/Frame 031658/0179 →
SECURITY INTEREST Recorded Mar 26, 2009
From: KATES, LAWRENCE
To: KNOBBE, MARTENS, OLSON & BEAR, LLP
Reel/Frame 022460/0472 →