Process monitoring system and method

Patent metadata

Field	Value
Publication number	US-9646111-B2
Application number	US-201313918219-A
Country	US
Kind code	B2
Filing date	Jun 14, 2013
Priority date	Jun 19, 2012
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

A process monitoring system may include: a storage unit configured to store time-sequence data, which is output from a field device located in a plant for measuring a state quantity, and log data, which includes handing procedures performed in past; a prediction unit configured to predict a time variation of the state quantity by using the time-sequence data output from the field device; and an extraction unit configured to extract the time-sequence data similar to the time variation of the state quantity, which has been predicted by the prediction unit, from the time-sequence data, which has been stored in the storage unit, the extraction unit being configured to extract the handling procedures, which has been performed at a time, when the time-sequence data that has been extracted is obtained, from the log data that has been stored in the storage unit.

First claim

What is claimed is:

1. A process monitoring system comprising:
a storage unit configured to store time-sequence data, which is output from a field device located in a plant for measuring a state quantity, and log data, which includes handling procedures performed in past;
a prediction unit configured to predict a time variation of the state quantity by using the time-sequence data output from the field device;
an extraction unit configured to extract the time-sequence data similar to the time variation of the state quantity, which has been predicted by the prediction unit, from the time-sequence data, which has been stored in the storage unit, the extraction unit being configured to extract the handling procedures, which has been performed at a time, when the time-sequence data that has been extracted is obtained, from the log data that has been stored in the storage unit; and
a display unit configured to display the handling procedures that have been extracted by the extraction unit, wherein
the prediction unit is configured to predict the time variation of the state quantity in a case, in which operations are performed by the handling procedures, by using the time-sequence data, which has been output from the field device, and the handling procedures, which has been extracted by the extraction unit, and
the display unit is configured to display prediction results that have been predicted by the prediction unit in the case in which the operations are performed by the handling procedures.

2. The process monitoring system according to claim 1 , further comprising:
the field device.

3. The process monitoring system according to claim 1 , wherein
the extraction unit is configured to extract a plurality of time-sequence data and a plurality of handling procedures, and
the prediction unit is configured to predict respectively the time variation of the state quantity in the case in which the operations by each of the plurality of handling procedures, which have been extracted by the extraction unit, are performed.

4. The process monitoring system according to claim 3 , wherein
the extraction unit is configured to extract, of the time-sequence data that has been stored in the storage unit, the data sequentially in order of having a higher similarity to the time variation of the state quantity that has been predicted by the prediction unit.

5. The process monitoring system according to claim 1 , further comprising:
a procedure data creation unit configured to create procedure data for executing the handling procedures by using the log data that has been stored in the storage unit; and
an execution unit configured to execute the procedure data that has been created by the procedure data creation unit.

6. The process monitoring system according to claim 1 , further comprising:
a controller configured to control the field device in response to an instruction from the display unit, the controller being configured to transmit data obtained by controlling the field device to data server via a control network.

7. The process monitoring system according to claim 6 , wherein
the data transmitted from the controller to the data server includes at least one of:
measurement data sequentially obtained from the field device;
control data sequentially output to the field device; and
data that is calculated from at least one data from a plurality of measurement data, which is obtained from at least one field device, and a plurality of control data, which is output to at least one field device.

8. The process monitoring system according to claim 1 , further comprising:
a procedure data creation unit configured to create procedure data for executing the handling procedures by using the log data that has been stored in the storage unit; and
an execution unit configured to execute the procedure data that has been created by the procedure data creation unit.

9. A process monitoring method for monitoring an industrial process implemented at a plant comprising:
a prediction step of predicting a time variation of a state quantity in the industrial process by using time-sequence data output from a field device for measuring the state quantity;
an extraction step of extracting the time-sequence data similar to the time variation of the state quantity, which has been predicted in the prediction step, from the time-sequence data, which has been stored in a storage unit that stores time-sequence data which is output from the field device and log data which includes handling procedures performed in past, and extracting the handling procedures, which has been performed at a time, when the time-sequence data that has been extracted is obtained, from the log data that has been stored in the storage unit; and
a display step of displaying the handling procedures that have been extracted in the extraction step, wherein
the prediction step includes predicting the time variation of the state quantity in a case, in which operations are performed by the handling procedures, by using the time-sequence data, which has been output from the field device, and the handling procedures, which has been extracted by the extraction unit, and
the display step includes displaying prediction results that have been predicted by the prediction unit in the case in which the operations are performed by the handling procedures.

10. The process monitoring method according to claim 9 , wherein
the extraction step includes extracting a plurality of time-sequence data and a plurality of handling procedures, and
the prediction step includes predicting respectively the time variation of the state quantity in the case in which the operations by each of the plurality of handling procedures, which have been extracted by the extraction unit, are performed.

11. The process monitoring method according to claim 10 , wherein
the extraction step includes extracting, of the time-sequence data that has been stored in the storage unit, the data sequentially in order of having a higher similarity to the time variation of the state quantity that has been predicted in the prediction step.

12. The process monitoring method according to claim 9 , further comprising:
a procedure step of creating procedure data for executing the handling procedures by using the log data that has been stored in the storage unit; and
an execution step of executing the procedure data that has been created by the procedure step.

13. A computer program product embodied on a non-transitory computer readable medium, the computer program product comprising:
instructions to store time-sequence data, which is output from a field device located in a plant for measuring a state quantity, and log data, which includes handling procedures performed in past, in a storage unit;
instructions to predict a time variation of the state quantity by using the time-sequence data output from the field device;
instructions to extract the time-sequence data similar to the time variation of the state quantity, which has been predicted, from the time-sequence data, which has been stored in the storage unit, and to extract the handling procedures, which has been performed at a time, when the time-sequence data that has been extracted is obtained, from the log data that has been stored in the storage unit;
instructions to display the handling procedures that have been extracted;
instructions to predict the time variation of the state quantity in a case, in which operations are performed by the handling procedures, by using the time-sequence data, which has been output from the field device, and the handling procedures, which has been extracted; and

Assignees

• Yokogawa Electric Corp

Inventors

• Kobayashi Satoshi

Classifications

• G06F17/40 Primary

  Data acquisition and logging (for input to computer G06F3/00) · CPC title

• G05B2219/31288

  Archive collected data into history file · CPC title

• G05B2219/34477

  Fault prediction, analyzing signal trends · CPC title

• G05B23/0216

  Human interface functionality, e.g. monitoring system providing help to the user in the selection of tests or in its configuration · CPC title

• G05B23/0229

  knowledge based, e.g. expert systems; genetic algorithms · CPC title