Data management system, data management method, and recording medium for recording data management program

Patent metadata

Field	Value
Publication number	US-11755204-B2
Application number	US-202117348799-A
Country	US
Kind code	B2
Filing date	Jun 16, 2021
Priority date	Jun 29, 2020
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

Provided a data management system which includes a data acquisition unit that acquires measurement data obtained by measuring a fluid flowing in a flow path from each of a plurality of sensors, a data recording unit that records the acquired measurement data, and a data volume reduction unit that reduces a data volume to be recorded for a target sensor based on the measurement data acquired from another sensor installed in either an upstream or a downstream from itself in the flow path among the plurality of sensors.

First claim

What is claimed is:

1. A data management system, comprising:
a data acquisition unit configured to acquire, from each of a plurality of sensors, measurement data obtained by measuring a fluid flowing in a flow path;
a data recording unit configured to record the acquired measurement data; and
a data volume reduction unit configured to reduce a data volume to be recorded for a target sensor based on the measurement data acquired from another sensor installed in either an upstream or a downstream from the target sensor in the flow path among the plurality of sensors,
wherein the data volume reduction unit is configured to reduce a data volume to be recorded for the target sensor in a target period based on a time-series change of the measurement data acquired from the other sensor in a corresponding period,
wherein selected portions of the measurement data from the target sensor that are to be reduced in data volume are selected based upon the selected portions that are to be reduced in data volume being reproducible from the measurement data acquired from the other sensor, and
wherein, in a case where a similarity between the time-series change of the measurement data acquired from the other sensor in the corresponding period and a time-series change of the measurement data acquired from the target sensor in the target period falls within a preset range, the data volume reduction unit is configured to reduce a data volume to be recorded for the target sensor in the target period.

2. The data management system according to claim 1 ,
wherein a physical quantity to be measured of the other sensor is the same as the physical quantity to be measured of the target sensor.

3. The data management system according to claim 2 ,
wherein the data volume reduction unit is configured to reduce the number of samples per unit time of the measurement data acquired from the target sensor.

4. The data management system according to claim 2 ,
wherein the data volume reduction unit is configured to reduce a data size per one piece of the measurement data acquired from the target sensor.

5. The data management system according to claim 2 ,
wherein the data volume reduction unit is configured to reduce a data volume to be recorded for the target sensor in response to elapse of a preset time.

6. The data management system according to claim 2 ,
wherein the data volume reduction unit is configured to reduce a data volume to be recorded for the target sensor in response to remaining recordable capacity for the measurement data falling below a preset threshold.

7. The data management system according to claim 2 , further comprising:
a data transmission unit configured to transmit the measurement data after a data volume is reduced to another data utilization device which utilizes the measurement data.

8. The data management system according to claim 2 ,
wherein the data volume reduction unit is configured to delete a part of the measurement data acquired from the target sensor for a plurality of times excluding a start point and an end point of the target period.

9. The data management system according to claim 1 ,
wherein the data volume reduction unit is configured to delete a part of the measurement data acquired from the target sensor for at least one time excluding a start point and an end point of the target period.

10. The data management system according to claim 1 ,
wherein the data volume reduction unit is configured to reduce the number of samples per unit time of the measurement data acquired from the target sensor.

11. The data management system according to claim 1 ,
wherein the data volume reduction unit is configured to reduce a data size per one piece of the measurement data acquired from the target sensor.

12. The data management system according to claim 1 ,
wherein the data volume reduction unit is configured to reduce a data volume to be recorded for the target sensor in response to elapse of a preset time.

13. The data management system according to claim 1 ,
wherein the data volume reduction unit is configured to reduce a data volume to be recorded for the target sensor in response no remaining recordable capacity for the measurement data falling below a preset threshold.

14. The data management system according to claim 1 , further comprising:
a data transmission unit configured to transmit the measurement data after a data volume is reduced to another data utilization device which utilizes the measurement data.

15. The data management system according to claim 1 ,
wherein the data volume reduction unit is configured to delete a part of the measurement data acquired from the target sensor for a plurality of times excluding a start point and an end point of the target period.

16. A data management method, comprising:
acquiring measurement data obtained by measuring a fluid flowing in a flow path from each of a plurality of sensors;
recording the acquired measurement data; and
reducing a data volume to be recorded for a target sensor based on the measurement data acquired from another sensor installed in either an upstream or a downstream from the target sensor in the flow path among the plurality of sensors,
wherein reducing the data volume to be recorded for the target sensor for a target period is based on a time-series change of the measurement data acquired from the other sensor in a corresponding period,
wherein selected portions of the measurement data from the target sensor that are to be reduced in data volume are selected based upon the selected portions that are to be reduced in data volume being reproducible from the measurement data acquired from the other sensor, and
wherein, in a case where a similarity between the time-series change of the measurement data acquired from the other sensor in the corresponding period and a time-series change of the measurement data acquired from the target sensor in the target period falls within a preset range, the data volume to be recorded for the target sensor in the target period is then reduced.

17. A non-transitory recording medium having a data management program recorded therein,
wherein the program, when executed by a computer, causes the computer to function as:
a data acquisition unit configured to acquire measurement data obtained by measuring a fluid flowing in a flow path from each of a plurality of sensors;
a data recording unit configured to record the acquired measurement data; and
a data volume reduction unit configured to reduce a data volume to be recorded for a target sensor based on the measurement data acquired from another sensor installed in either an upstream or a downstream from the target sensor in the flow path among the plurality of sensors,
wherein the data volume reduction unit is configured to reduce a data volume to be recorded for the target sensor in a target period based on a time-series change of the measurement data acquired from the other sensor in a corresponding period,
wherein selected portions of the measurement data from the target sensor that are to be reduced in data volume are selected based upon the selected portions that are to be reduced in data volume being reproducible from the measurement data acquired from the other sensor, and
wherein, in a case where a similarity between the time-series change of the measurement data acquired from the other sensor in the corresponding period and a time-series change of the measurement data acquired from the target sensor in the target period falls within a preset range, the data volume reduction u

Assignees

• Yokogawa Electric Corp

Inventors

• Ema Nobuaki
• Yoshida Yoshitaka

Classifications

• G06F3/067 Primary

  Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS] · CPC title

• G05B23/0264 Primary

  Control of logging system, e.g. decision on which data to store; time-stamping measurements · CPC title

• G06F3/0608 Primary

  Saving storage space on storage systems · CPC title

• G06F3/0656

  Data buffering arrangements · CPC title

• G01D15/00

  Component parts of recorders for measuring arrangements not specially adapted for a specific variable · CPC title