Event analyzing device, event analyzing system, event analyzing method, and non-transitory computer readable storage medium

Patent metadata

Field	Value
Publication number	US-2018224809-A1
Application number	US-201815885947-A
Country	US
Kind code	A1
Filing date	Feb 1, 2018
Priority date	Feb 8, 2017
Publication date	Aug 9, 2018
Grant date	—

Abstract

An event analyzing device includes an event collector configured to collect log data of a manual operation event performed by an operator of a plant, an event analyzer configured to analyze a manual operation method or a manual operation intention of the manual operation event based on the log data, a manual operation sequence extractor configured to extract the manual operation method or the manual operation intention for each predetermined period as manual operation sequences in order of time, a manual operation sequence classifier configured to classify the manual operation sequences in which manual operations are in a similar order from among the manual operation sequences, a manual operation procedure constructor configured to construct a manual operation procedure of the operator based on the manual operation sequences, a process data collector configured to collect process data of the plant, and a manual operation condition estimator configured to estimate an execution condition under which manual operations of the manual operation procedure constructed are performed.

First claim

What is claimed is:

1 . An event analyzing device comprising:
an event collector configured to collect log data of a manual operation event performed by an operator of a plant; an event analyzer configured to analyze a manual operation method or a manual operation intention of the manual operation event based on the log data collected by the event collector; a manual operation sequence extractor configured to extract the manual operation method or the manual operation intention analyzed by the event analyzer for each predetermined period as manual operation sequences in order of time; a manual operation sequence classifier configured to classify the manual operation sequences in which manual operations are in a similar order from among the manual operation sequences extracted by the manual operation sequence extractor; a manual operation procedure constructor configured to construct a manual operation procedure of the operator based on the manual operation sequences classified by the manual operation sequence classifier; a process data collector configured to collect process data of the plant; and a manual operation condition estimator configured to estimate an execution condition under which manual operations of the manual operation procedure constructed by the manual operation procedure constructor are performed.

2 . The event analyzing device according to claim 1 ,
wherein the manual operation condition estimator is configured to extract features amount of a plurality of the process data collected by the process data collector, and the manual operation condition estimator is configured to estimate the execution condition based on a relation between the extracted features amount and the manual operation.

3 . The event analyzing device according to claim 2 ,
wherein the manual operation condition estimator is configured to evaluate the relation between the extracted features amount and the manual operation in a plurality of stages to estimate the execution condition.

4 . The event analyzing device according to claim 1 ,
wherein the manual operation condition estimator is configured to estimate a start condition for starting the manual operation.

5 . The event analyzing device according to claim 1 ,
wherein the manual operation condition estimator is configured to estimate an end condition for ending the manual operation.

6 . The event analyzing device according to claim 1 ,
wherein the manual operation condition estimator is configured to estimate a branch condition in which the manual operation branches.

7 . The event analyzing device according to claim 1 ,
wherein the manual operation condition estimator is configured to estimate any one of a start condition for starting the manual operation, an end condition for ending the manual operation, and a branch condition in which the manual operation branches based on at least one of an average value of the process data, a slope of the process data, and a standard deviation of the process data.

8 . The event analyzing device according to claim 1 ,
wherein the manual operation method represents a method of the manual operation performed by the operator to a field device installed in the plant.

9 . The event analyzing device according to claim 1 ,
wherein the manual operation intention represents an intention of the manual operation performed by the operator to a field device installed in the plant.

10 . An event analyzing system comprising:
an event analyzing device which comprises: an event collector configured to collect log data of a manual operation event performed by an operator of a plant; an event analyzer configured to analyze a manual operation method or a manual operation intention of the manual operation event based on the log data collected by the event collector; a manual operation sequence extractor configured to extract the manual operation method or the manual operation intention analyzed by the event analyzer for each predetermined period as manual operation sequences in order of time; a manual operation sequence classifier configured to classify the manual operation sequences in which manual operations are in a similar order from among the manual operation sequences extracted by the manual operation sequence extractor; a manual operation procedure constructor configured to construct a manual operation procedure of the operator based on the manual operation sequences classified by the manual operation sequence classifier; a process data collector configured to collect process data of the plant; and a manual operation condition estimator configured to estimate an execution condition under which manual operations of the manual operation procedure constructed by the manual operation procedure constructor are performed.

11 . The event analyzing system according to claim 10 ,
wherein the manual operation condition estimator is configured to extract features amount of a plurality of the process data collected by the process data collector, and the manual operation condition estimator is configured to estimate the execution condition based on a relation between the extracted features amount and the manual operation.

12 . The event analyzing system according to claim 11 ,
wherein the manual operation condition estimator is configured to evaluate the relation between the extracted features amount and the manual operation in a plurality of stages to estimate the execution condition.

13 . The event analyzing system according to claim 10 ,
wherein the manual operation condition estimator is configured to estimate a start condition for starting the manual operation.

14 . The event analyzing system according to claim 10 ,
wherein the manual operation condition estimator is configured to estimate an end condition for ending the manual operation.

15 . The event analyzing system according to claim 10 ,
wherein the manual operation condition estimator is configured to estimate a branch condition in which the manual operation branches.

16 . The event analyzing system according to claim 10 ,
wherein the manual operation condition estimator is configured to estimate any one of a start condition for starting the manual operation, an end condition for ending the manual operation, and a branch condition in which the manual operation branches based on at least one of an average value of the process data, a slope of the process data, and a standard deviation of the process data.

17 . The event analyzing system according to claim 10 ,
wherein the manual operation method represents a method of the manual operation performed by the operator to a field device installed in the plant.

18 . The event analyzing system according to claim 10 ,
wherein the manual operation intention represents an intention of the manual operation performed by the operator to a field device installed in the plant.

19 . An event analyzing method comprising:
collecting, by an event collector, log data of a manual operation event performed by an operator of a plant; analyzing, by an event analyzer, a manual operation method or a manual operation intention of the manual operation event based on the log data collected by the event collector; extracting, by a manual operation sequence extractor, the manual operation method or the manual operation intention analyzed by the event analyzer for each predetermined period as manual operation sequences in order of time; classifying, by a manual operation sequence classifier, the manual operation se

Assignees

• Yokogawa Electric Corp

Inventors

• Liu Zhuo
• Sakuraba Yuichi

Classifications

• G05B19/409

  characterised by using manual data input [MDI] or by using control panel, e.g. controlling functions with the panel; characterised by control panel details or by setting parameters (G05B19/408, G05B19/4093 take precedence) · CPC title

• G05B13/048

  using a predictor · CPC title

• G05B13/0265 Primary

  the criterion being a learning criterion · CPC title

• G05B2219/23319

  Microprocessor control or manual control · CPC title

• G05B19/4183 Primary

  characterised by data acquisition, e.g. workpiece identification · CPC title