Monitoring load operation

Patent metadata

Field	Value
Publication number	US-10620240-B2
Application number	US-201314761130-A
Country	US
Kind code	B2
Filing date	Jan 18, 2013
Priority date	Jan 18, 2013
Publication date	Apr 14, 2020
Grant date	Apr 14, 2020

Abstract

A load monitoring system for a facility includes a computer system configured to execute a model of the object, the model configured to estimate a state of the object as a function of measured values of at least one characteristic of the object, receive at least one measured value of the at least one characteristic of the object, and execute, by the computer system, the model to compute an estimated state of the object.

First claim

What is claimed is:

1. A system for monitoring states of an electric load powered from a power supply, the system comprising:
a plurality of sensors configured to measure at least one characteristic of the load and transmit at least one measured value of the at least one characteristic of the load, the plurality of sensors including an electrical sensor and one of a vibration sensor or a thermal sensor, wherein at least one of the plurality of sensors can measure the at least one characteristic without drawing power from the power supply; and
a computer system configured to:
execute a model of the load, the model configured to estimate a state of the load as a function of the at least one measured value of the at least one characteristic of the load, the at least one measured value including a first value measured by the electrical sensor and a second value measured by the vibration sensor or the thermal sensor;
receive the at least one measured value of the at least one characteristic of the load from the plurality of sensors; and
determine, by the computer system, in response to executing the model of the load and receiving the at least one measured value, that the at least one measured value is an intermediate value having a value between a value corresponding to an ON state of the load and a value corresponding to an OFF state of the load, and based on the intermediate value determine an estimated transition time between the ON state and the OFF state.

2. The system of claim 1 , wherein the plurality of sensors is further configured to transmit the at least one measured value of the at least one characteristic to the computer system.

3. The system of claim 1 , wherein the at least one characteristic changes with operation of the load.

4. The system of claim 1 , wherein computing the estimated state of the object comprises computing an estimated load power usage.

5. The system of claim 3 , wherein the at least one characteristic comprises vibration of the load.

6. The system of claim 3 , wherein the at least one characteristic comprises current drawn by the load.

7. A method of monitoring states of an electric load, the method comprising:
providing power to the load via a power supply;
detecting, by a plurality of sensors including an electrical sensor and one of a vibration sensor or a thermal sensor, at least one characteristic of the load, wherein at least one of the plurality of sensors can measure the at least one characteristic without drawing power from the power supply;
transmitting at least one measured value of the at least one characteristic of the load from the plurality of sensors to a computer system;
receiving, by the computer system, the at least one measured value of the at least one characteristic of the load transmitted by the plurality of sensors;
executing, by the computer system, a model of the load, the model configured to estimate a state of the load as a function of the at least one measured value of the at least one characteristic, the at least one measured value including a first value measured by the electrical sensor and a second value measured by the vibration sensor or the thermal sensor; and
determining, by the computer system, in response to executing the model of the load and receiving the at least one measured value, that the at least one measured value is an intermediate value having a value between a value corresponding to an ON state of the load and a value corresponding to an OFF state of the load, and based on the intermediate value determine an estimated transition time between the ON state and the OFF state.

8. The method of claim 7 , further comprising:
transmitting, by each of the plurality of sensors, at least one measured value of the at least one characteristic to the computer system.

9. The method of claim 7 , wherein the at least one characteristic of the load changes with operation of the load.

10. The method of claim 7 , further comprising identifying locations on the load to deploy the sensors.

11. The method of claim 10 , wherein the plurality of sensors are configured to measure at least two different characteristics of the load.

12. The method of claim 7 , wherein computing the estimated state of the load comprises computing an estimated load power usage.

13. The method of claim 7 , wherein measuring at least one characteristic of the load comprises measuring vibration of the load.

14. The method of claim 7 , wherein measuring at least one characteristic of the load comprises measuring current drawn by the load.

15. A non-transitory computer readable medium having stored thereon sequences of instruction including instructions that will cause at least one processor to:
detect, by a plurality of sensors including an electrical sensor and one of a vibration sensor or a thermal sensor, at least one characteristic of a load;
execute a model of the load, the model configured to estimate a state of the load as a function of at least one measured values of at the least one characteristic of the load, the at least one measured value including a first value measured by the electrical sensor and a second value measured by the vibration sensor or the thermal sensor;
receive the at least one measured value of the at least one characteristic of the load via the plurality of sensors; and
determine, by the computer system, in response to executing the model of the load and receiving the at least one measured value, that the at least one measured value is an intermediate value having a value between a value corresponding to an ON state of the load and a value corresponding to an OFF state of the load, and based on the intermediate value determine an estimated transition time between the ON state and the OFF state.

Assignees

• Schneider Electric Usa Inc

Inventors

• Van Gorp John C
• Yeo Jeffrey W
• Tovey Peter

Classifications

• H02J3/003 Primary

  Load forecast, e.g. methods or systems for forecasting future load demand · CPC title

• H02J9/061

  for DC powered loads · CPC title

• H02J3/00

  Circuit arrangements for AC mains or AC distribution networks · CPC title

• G01R21/00 Primary

  Arrangements for measuring electric power or power factor (G01R7/12 takes precedence) · CPC title

• H02J2003/007

  Electricity · mapped topic