Synchronizing device, synchronization method and synchronization program

Patent metadata

Field	Value
Publication number	US-2019383701-A1
Application number	US-201916420316-A
Country	US
Kind code	A1
Filing date	May 23, 2019
Priority date	Jun 15, 2018
Publication date	Dec 19, 2019
Grant date	—

Abstract

A synchronizing device includes: a machine data acquisition portion which acquires at least one type of machine data related to operation of a machine in a time series based on first time information; a measurement data acquisition portion which acquires at least one type of measurement data measuring the state of the machine in a time series based on second time information; a first extraction portion which extracts, from any of the machine data, a moment at which a feature set in advance indicating a predetermined event is expressed; a second extraction portion which extracts, from any of the measurement data, a moment at which a feature set in advance indicating the predetermined event is expressed; and an output portion which synchronizes a moment extracted by the first extraction portion and a moment extracted by the second extraction portion, and outputs the machine data and the measurement data.

First claim

What is claimed is:

1 . A synchronizing device comprising:
a machine data acquisition portion which acquires at least one type of machine data related to operation of a machine in a time series based on first time information; a measurement data acquisition portion which acquires at least one type of measurement data measuring the state of the machine in a time series based on second time information; a first extraction portion which extracts, from any of the machine data, a moment at which a feature set in advance indicating a predetermined event is expressed; a second extraction portion which extracts, from any of the measurement data, a moment at which a feature set in advance indicating the predetermined event is expressed; and an output portion which synchronizes a moment extracted by the first extraction portion and a moment extracted by the second extraction portion, and outputs the machine data and the measurement data.

2 . The synchronizing device according to claim 1 , wherein
a feature which was set in advance indicating the predetermined event includes a value of target data exceeding a predetermined threshold.

3 . The synchronizing device according to claim 2 , wherein
the first extraction portion and the second extraction portion, in a case of video data being included in the machine data or the measurement data which are a processing target, extract from among frames images of the video data a moment of a frame in which a feature that was set in advance indicating the predetermined event is expressed.

4 . The synchronizing device according to claim 3 , further comprising
a threshold setting portion which sets the threshold, based on the machine data of a time period of the first time information including a moment extracted from video data by the first extraction portion, or the measurement data of a time period of the second time information including a moment extracted from video data by the second extraction portion.

5 . The synchronizing device according to claim 1 , wherein
the machine data includes a torque command value.

6 . The synchronizing device according to claim 1 , wherein
the measurement data includes acoustic data which indicates a magnitude of sound.

7 . The synchronizing device according to claim 1 , wherein
the measurement data includes acceleration data.

8 . A synchronization method executed by a computer, the method comprising:
a machine data acquiring step of acquiring at least one type of machine data related to operation of a machine in a time series, based on first time information; a measurement data acquiring step of acquiring at least one type of measurement data measuring the state of the machine in a time series, based on second time information; a first extracting step of extracting, from any of the machine data, a moment at which a feature that was set in advance indicating a predetermined event is expressed; a second extracting step of extracting, from any of the measurement data, a moment at which a feature set in advance indicating the predetermined event is expressed; and an outputting step of synchronizing a moment extracted in the first extracting step and a moment extracted in the second extracting step, and outputting the machine data and the measurement data.

9 . A non-transitory computer readable medium encoding a synchronization program for causing a computer to execute:
a machine data acquiring step of acquiring at least one type of machine data related to operation of a machine in a time series, based on first time information; a measurement data acquiring step of acquiring at least one type of measurement data measuring the state of the machine in a time series, based on second time information; a first extracting step of extracting, from any of the machine data, a moment at which a feature that was set in advance indicating a predetermined event is expressed; a second extracting step of extracting, from any of the measurement data, a moment at which a feature that was set in advance indicating the predetermined event is expressed; and an outputting step of synchronizing a moment extracted in the first extracting step and a moment extracted in the second extracting step, and outputting the machine data and the measurement data.

Assignees

• Fanuc Corp

Inventors

• Tezuka Junichi

Classifications

• G05B19/0405

  Program-control specially adapted for machine tool control and not otherwise provided for · CPC title

• G05B19/4155

  characterised by program execution, i.e. part program or machine function execution, e.g. selection of a program · 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

• G05B2219/37532

  Synchronized data acquisition · CPC title

• G05B19/4183

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