Electric meter installation issue detection based on orientation change

Patent metadata

Field	Value
Publication number	US-11536745-B2
Application number	US-202016823133-A
Country	US
Kind code	B2
Filing date	Mar 18, 2020
Priority date	Mar 18, 2020
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

A method for detecting electric meter installation issues includes: determining an initial orientation of an electric meter based on initial acceleration measurements from an accelerometer positioned in the electric meter. Subsequent acceleration measurements from the accelerometer may be continuously monitoring, and a subsequent orientation of the electric meter may be determined based on the subsequent acceleration measurements. A difference between the initial orientation and the subsequent orientation based on the initial acceleration measurements and the subsequent acceleration measurements may be determined and compared to a threshold value. Based on the difference exceeding the threshold value, a notification of a change in orientation of the electric meter may be generated to a head-end system.

First claim

What is claimed is:

1. A method comprising:
determining an initial orientation of an electric meter based on initial acceleration measurements from an accelerometer positioned in the electric meter;
continuously monitoring subsequent acceleration measurements from the accelerometer;
determining subsequent orientations of the electric meter based on the subsequent acceleration measurements obtained within a specified period of time;
determining differences between the initial orientation and the subsequent orientations based on the initial acceleration measurements and the subsequent acceleration measurements obtained within the specified period of time;
comparing the differences to threshold values;
determining that the differences exceed the threshold values;
based on the differences exceeding the threshold values, determining that the orientation of the electric meter is oscillating; and
generating a notification of the oscillating orientation of the electric meter to a head-end system.

2. The method of claim 1 , wherein determining the initial orientation of the electric meter comprises executing a firmware procedure to initiate the initial acceleration measurements on the electric meter during installation.

3. The method of claim 1 , wherein determining the initial orientation of the electric meter comprises initiating the initial acceleration measurements from the accelerometer by the electric meter when the electric meter first registers on a network and transitions to an operational mode at an installation site.

4. The method of claim 1 , wherein continuously monitoring the subsequent acceleration measurements from the accelerometer comprises receiving acceleration measurements from the accelerometer at predetermined time intervals.

5. The method of claim 1 , wherein determining the differences between the initial orientation and the subsequent orientations comprises determining differences between the initial acceleration measurements and the subsequent acceleration measurements.

6. The method of claim 1 , wherein determining a difference between the initial orientation and the subsequent orientations comprises:
determining an initial tilt angle of the electric meter based on the initial acceleration measurements,
determining a subsequent tilt angles of the electric meter based on the subsequent acceleration measurements, and
comparing the initial tilt angle to the subsequent tilt angles.

7. The method of claim 6 , further comprising:
determining tilt angle differences of the electric meter at predetermined time intervals when subsequent acceleration measurements from the accelerometer are received.

8. The method of claim 6 , wherein a tilt angle of the electric meter is an angle in a front-to-back direction with respect to a front face of the electric meter, an angle in a side-to-side direction with respect to the front face of the electric meter, or an angle in a rotation direction around a vertical axis of the electric meter.

9. An electric meter, comprising:
an accelerometer configured to:
obtain initial acceleration measurements of the electric meter due to gravity; and
obtain subsequent acceleration measurements of the electric meter due to gravity over time; and
a processor in communication with the accelerometer, wherein the processor is configured to:
receive the initial acceleration measurements and the subsequent acceleration measurements from the accelerometer;
determine an initial of the electric meter based on the initial acceleration measurements;
determine subsequent orientations of the electric meter based on the subsequent acceleration measurements obtained within a specified period of time;
determine differences between the initial orientation and the subsequent orientations based on the initial acceleration measurements and the subsequent acceleration measurements obtained within the specified period of time;
compare the differences to threshold values;
determine that the differences exceed the threshold values;
based on the differences exceeding the threshold values, determine that the orientation of the electric meter is oscillating, thereby straining connected electrical wiring; and
generate a notification of the oscillating orientation of the electric meter to a head-end system.

10. The electric meter of claim 9 , wherein the processor is further configured to determine the differences between the initial orientation and the subsequent orientations by determining differences between the initial acceleration measurements and the subsequent acceleration measurements.

11. The electric meter of claim 9 , wherein the processor is further configured to determine the differences between the initial orientation and the subsequent orientations by:
determining an initial tilt angle of the electric meter based on the initial acceleration measurements,
determining subsequent tilt angles of the electric meter based on the subsequent acceleration measurements, and
comparing the initial tilt angle to the subsequent tilt angles.

12. The electric meter of claim 11 , wherein the processor is further configured to receive the subsequent acceleration measurements at predetermined time intervals.

13. The electric meter of claim 12 , wherein the processor is further configured to determine tilt angle differences at the predetermined time intervals when the subsequent acceleration measurements from the accelerometer are received.

14. The electric meter of claim 11 , wherein a tilt angle of the electric meter is an angle in a front-to-back direction with respect to a front face of the electric meter or an angle in a side-to-side direction with respect to the front face of the electric meter.

15. The electric meter of claim 11 , wherein a tilt angle of the electric meter is an angle in a rotation direction around a vertical axis of the electric meter.

16. A system comprising:
a head-end system including a server; and
an electric meter in communication with the head-end system, the electric meter comprising:
an accelerometer configured to:
obtain initial acceleration measurements of the electric meter due to gravity; and
obtain subsequent acceleration measurements of the electric meter due to gravity over time; and

a processor in communication with the accelerometer, wherein the processor is configured to:
receive the initial acceleration measurements and the subsequent acceleration measurements from the accelerometer;
determine an initial orientation of the electric meter based on the initial acceleration measurements;
determine subsequent orientations of the electric meter based on the subsequent acceleration measurements obtained within a specified period of time;
determine differences between the initial orientation and the subsequent orientations based on the initial acceleration measurements and the subsequent acceleration measurements obtained within the specified period of time;
compare the differences to threshold values;
determine that the differences exceed the threshold values;
based on the differences exceeding the threshold values, determine that the orientation of the electric meter is oscillating, thereby straining connected electrical wiring; and
generate a notification of the oscillating orientation of the electric meter to the server of the head-end system.

17. The system of claim 16 , wherein the processor is further configured to determine the difference between the initial orientation and the subsequent orientations by determining differences between the initial acceleration measurements an

Assignees

• Landis & Gyr Innovations Inc

Inventors

• Schamber David
• Stenberg David

Classifications

• G01R11/04

  Housings; Supporting racks; Arrangements of terminals · CPC title

• G01R22/066

  Arrangements for avoiding or indicating fraudulent use · CPC title

• G01R11/24

  Arrangements for avoiding or indicating fraudulent use · CPC title

• G01R11/25 Primary

  Arrangements for indicating or signalling faults · CPC title

• G06Q50/06

  Energy or water supply · CPC title