Method for monitoring a mechanical system

Patent metadata

Field	Value
Publication number	US-11359744-B2
Application number	US-201916426512-A
Country	US
Kind code	B2
Filing date	May 30, 2019
Priority date	Jun 1, 2018
Publication date	Jun 14, 2022
Grant date	Jun 14, 2022

Abstract

A method for monitoring a system with mechanically movable parts, preferably a valve system, wherein the system is preferably part of a technical plant, in particular a production plant, and wherein the system has at least one mechanically movable part, in particular a valve, where the method comprises a) acquiring indicators, which can be used for a technical characterization of a movement procedure of the mechanically movable part, via technical devices configured for the acquisition of the indicators and b) transferring the acquired indicators to an evaluation unit arranged outside the system to determine a technical status of the system.

First claim

What is claimed is:

1. A method for monitoring a system with mechanically movable parts to initiate maintenance measures for the system based on a determined technical status of the system, the system forming part of a technical plant, and the system including at least one mechanically movable part, the method comprising:
a) acquiring indicators, which are usable for a technical characterization of a movement procedure of the mechanically movable part, via a technical device configured to acquire the indicators;
b) transferring the acquired indicators to an evaluation unit arranged in an external cloud environment outside the system of the technical plant to determine the technical status of the system; and
c) initiating maintenance measures for the system based on the determined technical status of the system;
wherein the indicators are transferred from a plurality of systems into the evaluation unit; and wherein the evaluation unit undertakes a categorization of the systems allocated to the evaluation unit to identify systematic errors in the systems; and
wherein the evaluation unit compares indicators which have been acquired and recorded in the evaluation unit with maintenance statuses to determine, from a change in a maintenance status, associated limit values for one of (i) the indicators and (ii) a combination of indicators for a respective category of the system, and to record said associated limit values in the evaluation unit.

2. The method as claimed in claim 1 , wherein a maintenance status of the at least one mechanically movable part is transferred to the evaluation unit.

3. The method as claimed in claim 2 , wherein the evaluation unit compares indicators which have been acquired and recorded in the evaluation unit with maintenance statuses to determine, from a change in a maintenance status, associated limit values for one of (i) the indicators and (ii) a combination of indicators for a respective category of the system, and to record said associated limit values in the evaluation unit.

4. The method as claimed in claim 1 , wherein one of (i) the limit values for the indicators and (ii) the combination of indicators for each respective category of the system are continuously adapted by the evaluation unit to automatically improve a selectivity of calculated limit values.

5. The method as claimed in claim 1 , wherein, in addition to the at least one mechanically movable part, the valve system comprises a pilot valve and a drive, wherein additionally indicators are acquired by the technical device configured for acquisition, which are usable for a technical characterization of at least one of (i) an opening procedure and (ii) closing procedure of the pilot valve and the drive; and wherein the additionally acquired indicators are transferred to the evaluation unit to determine a status of the valve system.

6. The method as claimed in claim 5 , wherein the transfer of the acquired indicators to the evaluation unit is linked with an identification of at least one of (i) an opening procedure and (ii) a closing procedure of the at least one of (a) the at least one mechanically movable part, (b) the drive and (c) the pilot valve to minimize a communication load of the evaluation unit.

7. The method as claimed in claim 5 , wherein the indicators are derived from a characteristic sequence of one of (i) structure-borne, (ii) airborne and (iii) pressure characteristics of at least one of (i) the mechanically movable part and (ii) the drive and (iii) the pilot valve.

8. The method as claimed in claim 1 , wherein the acquired indicators relate to at least one of (i) a structure-borne sound value, (ii) an airborne sound value and (iii) a pressure value within the system; wherein the technical device configured for the acquisition of at least one of (i) the structure-borne sound, (ii) the airborne sound and (iii) the pressure value comprise sensors.

9. The method as claimed in claim 8 , wherein the sensors include at least one of (i) an autonomous power source for providing a supply power necessary for the acquisition of the indicators and (ii) an electrical connection to an electrical supply network supplying the system.

10. The method as claimed in claim 9 , wherein an idle state of the sensors is terminated by a switching procedure of the system to initiate the acquisition of the indicators.

11. The method as claimed in claim 9 , wherein the sensors are further configured to identify changes in an electrical supply network which supplies the system to identify a start point of one of (i) a closing procedure and (ii) an opening procedure of the system.

12. The method as claimed in claim 8 , wherein an idle state of the sensors is terminated by a switching procedure of the system to initiate the acquisition of the indicators.

13. The method as claimed in claim 12 , wherein the sensors are further configured to identify changes in an electrical supply network which supplies the system to identify a start point of one of (i) a closing procedure and (ii) an opening procedure of the system.

14. The method as claimed in claim 8 , wherein the sensors are further configured to identify changes in an electrical supply network which supplies the system to identify a start point of one of (i) a closing procedure and (ii) an opening procedure of the system.

15. The method as claimed in claim 1 , wherein the transfer of the acquired indicators to the evaluation unit occurs wirelessly.

16. The method as claimed in claim 1 , wherein the technical status of the valve system ascertained by the evaluation unit is transferred to a unit which is configured to initiate the maintenance measures for the system.

17. The method as claimed in claim 1 , wherein the indicators are acquired and transferred to the evaluation unit during a manufacturing process of the valve system to serve as a reference for subsequent acquisitions of the indicators.

18. The method as claimed in claim 1 , wherein the mechanically movable parts comprise a valve system.

19. The method as claimed in claim 1 , wherein the technical plant comprises a production plant.

20. The method as claimed in claim 1 , wherein the at least one mechanically movable part comprises a valve.

21. A method for monitoring a system with mechanically movable parts to initiate maintenance measures for the system based on a determined technical status of the system, the system forming part of a technical plant, and the system including at least one mechanically movable part, the method comprising:
a) acquiring indicators, which are usable for a technical characterization of a movement procedure of the mechanically movable part, via a technical device configured to acquire the indicators;
b) transferring the acquired indicators to an evaluation unit arranged in an external cloud environment outside the system of the technical plant to determine the technical status of the system; and
c) initiating maintenance measures for the system based on the determined technical status of the system;
wherein the indicators are transferred from a plurality of systems into the evaluation unit; and wherein the evaluation unit undertakes a categorization of the systems allocated to the evaluation unit to identify systematic errors in the systems;
wherein a maintenance status of the at least one mechanically movable part is transferred to the evaluation unit; and
wherein the evaluation unit compares indicators which have been acquired and recorded in the evaluation unit with maintenance statuse

Assignees

• Siemens Ag

Inventors

• Barth Johannes
• Huck Ralf

Classifications

• F16K37/0041

  for measuring valve parameters (F16K37/0033 takes precedence) · CPC title

• F16K31/1262

  one side of the diaphragm being spring loaded · CPC title

• F15B2211/6303

  using input signals · CPC title

• F16K31/122

  the fluid acting on a piston (F16K31/143, F16K31/163, F16K31/363, F16K31/383 take precedence) · CPC title

• Y10T137/8242

  Electrical · CPC title