Information processing device, information processing method, and program

Patent metadata

Field	Value
Publication number	US-11237547-B2
Application number	US-201816497023-A
Country	US
Kind code	B2
Filing date	Mar 26, 2018
Priority date	Mar 29, 2017
Publication date	Feb 1, 2022
Grant date	Feb 1, 2022

Abstract

In an information processing device according to the present invention, an acquisition unit is configured to acquire a plurality of values related to a state quantity of a target device. An extraction unit is configured to extract a state value group constituted by a plurality of values related to an identical state quantity from the acquired plurality of values. A specification unit is configured to specify a value to be used to manage the target device from the state value group based on reliabilities of the values included in the state value group.

First claim

The invention claimed is:

1. An information processing device comprising:
a measurement device that is configured to measure a plurality of values related to state quantity of a target device;
a communication device that is configured to transmit the plurality of values related to the state quantity measured by the measurement device through a network to an acquisition unit;
an extraction unit that is configured to extract a state value group constituted by a time series of the plurality of values related to an identical state quantity in an identical period from the acquired plurality of values, which are overlapping, by using the identical state quantity and the identical period as an extraction condition; and
a specification unit that is configured to specify a time series of values to be used to manage the target device in the period from the state value group based on reliabilities of the time series of the values in the state value group.

2. The information processing device according to claim 1 , wherein the specification unit is configured to specify a time series of values to be used to manage the target device in the period from the state value group based on a difference between reliabilities in the time series in the state value group.

3. The information processing device according to claim 1 , wherein the acquisition unit is configured to acquire a plurality of measurement values related to a state quantity of the target device from a measurement instrument provided in the target device, and acquire an estimation value by estimating other state quantities based on the measurement value.

4. The information processing device according to claim 3 , wherein the acquisition unit is configured to acquire an estimation value related to a state quantity of the target device based on a measurement value related to a state quantity of a device different from the target device.

5. The information processing device according to claim 1 , further comprising:
a complementary unit that is configured to complement a value of the state quantity related to a time having no value related to the state quantity based on a value specified by the specification unit.

6. The information processing device according to claim 1 , further comprising:
a comparison value calculation unit that is configured to calculate a comparison value which is a value related to another state quantity by using values included in the state value group; and
a reliability calculation unit that is configured to calculate reliabilities of values included in the state value group based on a difference between the value of the other state quantity acquired by the acquisition unit and a comparison value calculated by the comparison value calculation unit.

7. The information processing device according to claim 1 , wherein the specification unit is configured to specify a value to be used to manage the target device based on a statistic of values included in the state value group.

8. The information processing device according to claim 1 , wherein the specification unit is configured to specify a weighted average value of the values related to the state value group using weights corresponding to the reliabilities of the values included in the state value group as a value to be used to manage the target device.

9. An information processing method comprising:
measuring a plurality of values related to state quantity of a target device;
transmitting the plurality of values related to the state quantity measured by the measurement device through a network to an acquisition unit;
extracting a state value group constituted by a time series of the plurality of values related to an identical state quantity in an identical period from the acquired plurality of values, which are overlapping, by using the identical state quantity and the identical period as an extraction condition; and
specifying a time series of values to be used to manage the target device in the period from the state value group based on reliabilities of the time series of the values in the state value group.

10. A non-transitory computer-readable medium that stores a program causing a computer to:
measuring a plurality of values related to state quantity of a target device;
transmitting the plurality of values related to the state quantity measured by the measurement device through a network to an acquisition unit;
extract a state value group constituted by a time series of the plurality of values related to an identical state quantity in an identical period from the acquired plurality of values, which are overlapping, by using the identical state quantity and the identical period as an extraction condition; and
specify a time series of values to be used to manage the target device in the period from the state value group based on reliabilities of the time series of the values in the state value group.

Assignees

• Mitsubishi Heavy Ind Ltd
• Mitsubishi Hitachi Power Sys Ltd
• Mitsubishi Power Ltd

Inventors

• Kumano Shintaro
• Kishi Makoto
• Abe Katsuhiko
• Yamamoto Keisuke

Classifications

• G06F17/40

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

• G05B19/042 Primary

  using digital processors (G05B19/05 takes precedence) · CPC title

• G08C15/00

  Arrangements characterised by the use of multiplexing for the transmission of a plurality of signals over a common path · CPC title

• G01D9/00

  Recording measured values · CPC title

• G05B23/0221

  Preprocessing measurements, e.g. data collection rate adjustment; Standardization of measurements; Time series or signal analysis, e.g. frequency analysis or wavelets; Trustworthiness of measurements; Indexes therefor; Measurements using easily measured parameters to estimate parameters difficult to measure; Virtual sensor creation; De-noising; Sensor fusion; Unconventional preprocessing inherently present in specific fault detection methods like PCA-based methods · CPC title