Information processing device, alarm prediction method, and computer-readable recording medium

Patent metadata

Field	Value
Publication number	US-11893869-B2
Application number	US-202217824422-A
Country	US
Kind code	B2
Filing date	May 25, 2022
Priority date	May 28, 2021
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

An information processing device uses models generated under different conditions, and predicts alarms occurring in the case in which each of a plurality of operation patterns, which is virtually generated in relation to the operation of an actual plant by a worker, is implemented with respect to the actual plant. Then, the information processing device sets the degree of reliability of the prediction result regarding each of the plurality of operation patterns. Subsequently, based on the degree of reliability of the prediction result, the information processing device performs display control with respect to the alarms.

First claim

What is claimed is:

1. An information processing device comprising:
a generating unit that generates a first model under a first condition and a second model under a second condition different from the first condition;
a predicting unit that predicts an occurrence of at least one alarm by performing a simulation for an operation pattern, which is virtually generated in relation to operation of an actual plant by a worker under a third condition different from the first and second conditions, by interpolating or extrapolating the first model and the second model;
a deciding unit that sets degree of reliability of prediction result regarding the operation pattern based on a difference between the third condition and the first and second conditions; and
a display control unit that performs display control with respect to the occurrence of at least one alarm based on degree of reliability of the prediction result.

2. The information processing device according to claim 1 , wherein, the deciding unit sets the degree of reliability of the prediction result such that the degree of reliability becomes inversely proportional to a difference between the first and second conditions of the first and second models and condition at time of prediction of the alarms.

3. The information processing device according to claim 1 , wherein
in the operation pattern, load information is set that indicates load on the actual plant when concerned operation pattern is implemented,
at time of performing prediction regarding the operation pattern, the predicting unit performs prediction using a model that corresponds to load information set for concerned operation pattern, and
the deciding unit sets degree of reliability of the prediction result based on model used at time of performing prediction regarding the operation pattern.

4. The information processing device according to claim 1 , wherein the display control unit
generates a display screen in which, regarding the operation pattern, sequence of occurrence of predicted alarms is displayed in chronological order, and
suppresses, from among a plurality of alarms displayed in the display screen, display of alarms for which degree of reliability of the prediction result is smaller than a threshold value.

5. An alarm prediction method comprising:
generating a first model under a first condition and a second model under a second condition different from the first condition;
predicting an occurrence of at least one alarm by performing a simulation for an operation pattern, which is virtually generated in relation to operation of an actual plant by a worker under a third condition different from the first and second conditions, by interpolating or extrapolating the first model and the second model;
setting degree of reliability of prediction result regarding the operation pattern based on a difference between the third condition and the first and second conditions; and
performing display control with respect to the occurrence of at least one alarm based on degree of reliability of the prediction result.

6. A non-transitory computer-readable recording medium having stored therein an alarm prediction program that causes a computer to perform a process comprising:
generating a first model under a first condition and a second model under a second condition different from the first condition;
predicting an occurrence of at least one alarm by performing a simulation for an operation pattern, which is virtually generated in relation to operation of an actual plant by a worker under a third condition different from the first and second conditions, by interpolating or extrapolating the first model and the second model;
setting degree of reliability of prediction result regarding the operation pattern based on a difference between the third condition and the first and second conditions; and
performing display control with respect to the occurrence of at least one alarm based on degree of reliability of the prediction result.

7. The information processing device according to claim 1 , wherein a relationship between the difference between the third condition and the first and second conditions and the degree of reliability is defined in advance in a table.

8. The information processing device according to claim 1 , wherein the first condition, the second condition and the third condition are related to one selected from a group consisting of a load on the plant, an ambient temperature, a humidity, weather and a skill level of the worker.

Assignees

• Yokogawa Electric Corp

Inventors

• Kashiwa Ryosuke
• Omata Toshiaki
• Ema Nobuaki
• Yoshida Yoshitaka

Classifications

• G08B21/02 Primary

  Alarms for ensuring the safety of persons · CPC title

• G05B19/41885 Primary

  characterised by modeling, simulation of the manufacturing system · CPC title

• G05B19/41875 Primary

  characterised by quality surveillance of production · CPC title

• G05B2219/32252

  Scheduling production, machining, job shop · CPC title

• G05B2219/31437

  Monitoring, global and local alarms · CPC title