Method for monitoring an electromechanical component of an automated system

Patent metadata

Field	Value
Publication number	US-11380506-B2
Application number	US-201716467837-A
Country	US
Kind code	B2
Filing date	Dec 11, 2017
Priority date	Dec 12, 2016
Publication date	Jul 5, 2022
Grant date	Jul 5, 2022

Abstract

The present disclosure relates to a method for monitoring an electromechanical component of an automation system. The method includes sensing a current mechanical state variable of the electromechanical component, sensing a current electrical state variable of the electromechanical component and determining a state of the electromechanical component based at least in part on a behaviour model of the electromechanical component, wherein the behaviour model takes into account an effect of the sensed current mechanical state variable on the sensed current electrical state variable.

First claim

What is claim is:

1. A method for monitoring an electromechanical component of an automation system, comprising:
sensing a current mechanical state variable of the electromechanical component;
sensing a current electrical state variable of the electromechanical component; and
determining a state of the electromechanical component based at least in part on a behaviour model of the electromechanical component, wherein the behaviour model takes into account an effect of the sensed current mechanical state variable on the sensed current electrical state variable, wherein the state of the electromechanical component is determined by running a behaviour simulation of the electromechanical component, wherein the behaviour simulation implements the behaviour model.

2. The method according to claim 1 , wherein, sensing the current mechanical state variable comprises sensing an electrical variable of the electromechanical component.

3. The method according to claim 2 , wherein the electrical variable comprises one or more of: a load current, a change in a load current, a current through the electromechanical component, or a voltage of the electromechanical component.

4. The method according to claim 1 , wherein the electromechanical component is a relay.

5. The method according to claim 1 , wherein the current mechanical state variable includes one or more of the following mechanical state variables: a bounce of a contact of the electromechanical component, a bounce duration of a bounce of a contact of the electromechanical component, a number of bounces of a contact of the electromechanical component, a temperature of an element of the electromechanical component, an ambient temperature of the electromechanical component, a movement speed of an element of the electromechanical component, a contact force of a contact of the electromechanical component, or a release force of a contact of the electromechanical component.

6. The method according to claim 1 , wherein the behaviour model is associated with the electromechanical component, wherein the behaviour model provides a profile of the electrical state variable as a function of the mechanical state variable.

7. The method according to claim 1 , further comprising displaying the determined state of the electromechanical component on a display device.

8. The method according to claim 1 , further comprising generating a control signal for controlling the electromechanical component in response to the determined state of the electromechanical component, and controlling the electromechanical component using the generated control signal.

9. The method according to claim 1 , wherein the current mechanical state variable and the current electrical state variable are sensed by the electromechanical component.

10. The method according to claim 1 , further comprising transmitting the sensed current mechanical state variable and the sensed current electrical state variable from the electromechanical component to a remote data processing device via a communication network, and wherein the state of the electromechanical component is sensed by the remote data processing device and transmitted to the electromechanical component.

11. An electromechanical component comprising:
a sensing device configured to sense a current mechanical state variable of the electromechanical component and a current electrical state variable of the electromechanical component; and
a communication interface configured to transmit the sensed current mechanical state variable and the sensed current electrical state variable to a remote data processing device via a communication network for determining a state of the electromechanical component on the basis of a behaviour model of the electromechanical component, wherein the behaviour model takes into account an effect of the sensed current mechanical state variable on the sensed current electrical state variable, wherein the communication interface is configured to receive information about the determined state via the communication network, wherein the state of the electromechanical component is determined by running a behaviour simulation of the electromechanical component, and wherein the behaviour simulation implements the behaviour model.

12. The electromechanical component according to claim 11 , further comprising a display device configured to display the sensed state.

13. The electromechanical component according to claim 11 , further comprising a control device configured to generate a control signal for controlling the electromechanical component in response to the sensed state and to control the electromechanical component using the generated control signal.

14. A non-transitory computer-readable medium comprising program code executable by a processor to:
sense a current mechanical state variable of an electromechanical component of an automation system;
sense a current electrical state variable of the electromechanical component; and
determine a state of the electromechanical component based at least in part on a behaviour model of the electromechanical component, wherein the behaviour model takes into account an effect of the sensed current mechanical state variable on the sensed current electrical state variable, wherein the state of the electromechanical component is determined by running a behaviour simulation of the electromechanical component, wherein the behaviour simulation implements the behaviour model.

15. The non-transitory computer-readable medium of claim 14 , wherein the wherein the current mechanical state variable includes one or more of the following mechanical state variables: a bounce of a contact of the electromechanical component, a bounce duration of a bounce of a contact of the electromechanical component, a number of bounces of a contact of the electromechanical component, a temperature of an element of the electromechanical component, an ambient temperature of the electromechanical component, a movement speed of an element of the electromechanical component, a contact force of a contact of the electromechanical component, or a release force of a contact of the electromechanical component.

16. The non-transitory computer-readable medium of claim 14 , wherein the behaviour model is associated with the electromechanical component, wherein the behaviour model provides a profile of the electrical state variable as a function of the mechanical state variable.

17. The non-transitory computer-readable medium of claim 14 , wherein the program code is further executable by a processor to display the determined state of the electromechanical component on a display device.

18. The non-transitory computer-readable medium of claim 14 , wherein the program code executable by the processor to sense the current mechanical state variable is further executable by the processor to sense an electrical variable of the electromechanical component.

19. The non-transitory computer-readable medium of claim 18 , wherein the electrical variable comprises one or more of: a load current, a change in a load current, a current through the electromechanical component, or a voltage of the electromechanical component.

Assignees

• Phoenix Contact Gmbh & Co

Inventors

• Hoffmann Ralf

Classifications

• G05B23/0283

  Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] (preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06) · CPC title

• H01H71/04 Primary

  Means for indicating condition of the switching device {(by means of an auxiliary contact H01H71/46)} · CPC title

• G05B23/0254 Primary

  based on a quantitative model, e.g. mathematical relationships between inputs and outputs; functions: observer, Kalman filter, residual calculation, Neural Networks · CPC title

• H01H1/0015

  Means for testing or for inspecting contacts, e.g. wear indicator (measuring circuits G01R31/3274) · CPC title

• H01H11/0062

  Testing or measuring non-electrical properties of switches, e.g. contact velocity (monitoring contacts H01H1/0015; monitoring gas density H01H33/563; monitoring vacuum H01H33/668; calibrating H01H69/01; adjusting H01H71/74; testing of electrical properties G01R31/333) · CPC title