WO2023106038A1 - Dispositif, procédé et programme de stockage de données cibles de surveillance - Google Patents

Dispositif, procédé et programme de stockage de données cibles de surveillance Download PDF

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Publication number
WO2023106038A1
WO2023106038A1 PCT/JP2022/042119 JP2022042119W WO2023106038A1 WO 2023106038 A1 WO2023106038 A1 WO 2023106038A1 JP 2022042119 W JP2022042119 W JP 2022042119W WO 2023106038 A1 WO2023106038 A1 WO 2023106038A1
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Prior art keywords
target data
monitoring target
unit
monitored
data
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PCT/JP2022/042119
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English (en)
Japanese (ja)
Inventor
直哉 矢澤
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住友重機械工業株式会社
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Publication of WO2023106038A1 publication Critical patent/WO2023106038A1/fr

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring

Definitions

  • the present invention relates to a monitored data storage device that stores data from a monitored device.
  • Patent Document 1 discloses a monitoring system that extracts and saves monitoring target data from semiconductor manufacturing equipment at a variable sampling rate. By applying a higher sampling rate as the time rate of change of monitored data increases, data loss is prevented.
  • the sampling rate is increased after detecting an increase in the time rate of change of the monitored data, so the sampling rate remains low when the time rate of change increases. For this reason, data at the time of occurrence of change, which is highly likely to include important suggestions in monitoring, is missed.
  • the present invention has been made in view of this situation, and its purpose is to provide a monitored data storage device that can prevent important data from being lost during monitoring.
  • a monitoring target data storage device includes a receiving unit that receives monitoring target data from a monitoring target device, and a monitoring target data group received over a predetermined buffer period. a temporary holding unit that temporarily holds; an extracting unit that analyzes the monitored data group within the buffer period and extracts data to be saved from the monitored data group; and saves the extracted data to be saved. a storage unit;
  • data to be extracted and stored from the buffer period can be determined through analysis of the monitored data group for the temporarily held buffer period. For example, when a sudden change occurs in the monitored data during the buffer period, it is possible to prevent important data from being lost by increasing the sampling rate at that point, immediately before and/or after.
  • Another aspect of the present invention is a monitoring target data storage method.
  • This method includes a receiving step of receiving monitoring target data from a monitoring target device, a temporary holding step of temporarily holding a group of monitoring target data received over a predetermined buffer period, and a monitoring target data within the buffer period.
  • FIG. 1 shows the configuration of a printing apparatus as an example of an industrial system; 1 is a perspective view showing the overall structure of a linear transfer system as an example of an industrial system; FIG.
  • FIG. 1 is a functional block diagram of a monitored data storage device 1 and an industrial device 2 according to an embodiment of the present invention.
  • the monitoring target data storage device 1 is a device that collects and stores various monitoring target data from the industrial device 2 in order to monitor the industrial device 2, and is also called a data logger.
  • the monitoring target data storage device 1 includes a storage unit 18 that is a storage device or storage for storing monitoring target data. Saving is impractical. Therefore, only data determined to be useful for monitoring is extracted by the extraction unit 16 described later and stored in the storage unit 18 .
  • the industrial device 2 as a monitoring target device by the monitoring target data storage device 1 is a device used for specific purposes in industrial sites where various products and services are produced and provided. Specific examples of the industrial equipment 2 will be described later, but for example, boilers/motors handled by the Japan Society of Industrial Machinery Manufacturers, mining machinery, chemical machinery, environmental equipment, tanks, plastic machinery, wind and hydraulic machinery, transportation machinery, power transmission Including industrial machines, industrial machinery, industrial equipment, etc. used in industrial sites such as factories of companies such as equipment, iron manufacturing machines, commercial washing machines, etc., manufacturing equipment such as semiconductors, machine tools, printers, industrial robots . On the other hand, the industrial equipment 2 does not include general-purpose equipment such as personal computers and smart phones, whose applications are not limited.
  • the industrial device 2 is provided with a control unit 20 such as a microcontroller (MCU: Micro Controller Unit), a microprocessor (MPU: Micro-Processing Unit), a central processing unit (CPU: Central Processing Unit), etc.
  • a control unit 20 such as a microcontroller (MCU: Micro Controller Unit), a microprocessor (MPU: Micro-Processing Unit), a central processing unit (CPU: Central Processing Unit), etc.
  • MCU Micro Controller Unit
  • MPU Micro-Processing Unit
  • CPU Central Processing Unit
  • a typical industrial device 2 controls the movement of the movable parts of the industrial device 2 itself (for example, the joint of an industrial robot, the processing part of a machine tool, and the table on which a workpiece is placed), and the operation of each part of the industrial device 2.
  • a drive unit 24 such as a motor for driving movable parts of control parts such as relays and electromagnetic valves.
  • the control unit 20 controls the driving unit 24 based on the industrial software 22 read from the storage device
  • the industrial device 2 may be provided with a measurement unit 26 that measures various data useful for monitoring its operation.
  • a sensor for measuring the position, speed, acceleration, etc. of an object to be driven by the drive unit 24 for example, a table in a machine tool, a roll of paper unwound by a rotary printing machine), and other parameters of the drive object (for example, a roll of paper).
  • a sensor that measures tension or pressure applied from a roller) or a sensor that measures parameters related to the environment in which the industrial device 2 operates (e.g., temperature, humidity, air pressure, brightness) may be provided as the measurement unit 26.
  • various parameters such as the rotation speed, current, and torque of the motor as the driving unit 24 are sent to the receiving unit 12 of the monitored data storage device 1 as monitored data. sent. In this way, there are many types of monitoring target data.
  • the monitoring target data storage device 1 includes a reception unit 12, a temporary storage unit 14, an extraction unit 16, and a storage unit 18. These functional blocks are realized through cooperation between hardware resources such as the computer's central processing unit, memory, input device, output device, and peripheral devices connected to the computer, and software executed using these hardware resources. . Regardless of the type of computer or installation location, each of the above functional blocks may be implemented using the hardware resources of a single computer, or may be implemented by combining hardware resources distributed among multiple computers. . Particularly in this embodiment, some or all of the functional blocks of the monitored data storage device 1 may be realized by a computer installed in the industrial site where the industrial device 2 is installed, or may be implemented outside the industrial site. It may be implemented by a computer that can communicate with the installed industrial device 2 .
  • the receiving unit 12 receives a plurality of types of monitoring target data from the industrial device 2 as a monitoring target device.
  • the temporary holding unit 14 temporarily holds a plurality of types of monitoring target data groups received by the receiving unit 12 over a predetermined buffer period.
  • the extraction unit 16 analyzes the plurality of types of monitoring target data groups within the buffer period held by the temporary holding unit 14, and extracts storage target data to be saved from the plurality of types of monitoring target data groups.
  • the extracting unit 16 temporarily holds data based on the time change rate calculated by the time change rate calculation unit 161 and the time change rate calculated by the time change rate calculation unit 161, which calculates the time change rate at each time of the monitored data group within the buffer period.
  • a sampling rate changing unit 162 is provided for changing a sampling rate for extracting storage target data from the monitoring target data group held by the unit 14 .
  • the time change rate calculation unit 161 calculates the time change rate at each time of the plurality of types of monitoring target data groups within the buffer period.
  • the sampling rate changing unit 162 calculates the maximum time change rate among the time change rates calculated for the plurality of types of monitored data groups by the time change rate calculation unit 161, and the sampling rate change unit 162 stores the maximum time change rate in the temporary holding unit 14. change the sampling rate for extracting data to be saved from multiple types of monitoring data groups. Specifically, the sampling rate changing unit 162 increases the sampling rate as the calculated time change rate (or the maximum time change rate among the time change rates calculated for a plurality of types of monitoring target data groups) increases. apply.
  • the storage unit 18 stores the storage target data extracted by the extraction unit 16 . After the storage unit 18 stores the storage target data, part or all of the monitoring target data group that is the extraction source is erased from the temporary storage unit 14 .
  • FIG. 2 shows an example of extracting one type of monitoring target data at a variable sampling rate in the prior art (for example, Patent Document 1).
  • FIG. 3 shows an example of extracting one type of monitored data at a variable sampling rate in this embodiment.
  • the monitoring target data in both figures is the same.
  • the horizontal axis in both figures represents the time when the monitoring target data storage device (receiver 12 in this embodiment) received the monitoring target data from the monitoring target device (industrial device 2, etc.), and the vertical axis in both figures represents each time. represents the value of the monitored data in .
  • the dots or points on the monitored data graph represent data to be saved that is extracted at a variable sampling rate.
  • the subsequent sampling rate is determined according to the detected temporal change rate of the data to be saved (dots).
  • the monitored data and the data to be saved gradually increase, but the rate of change over time between adjacent data to be saved is relatively small, so a relatively low sampling rate ( For example, sampling once at "5" time) is applied.
  • the following time "40" is relatively A high sampling rate (eg, one sampling at time '1') is applied, but it is untimely because it is after the abrupt change from time '35' to time '39' has subsided.
  • the temporary holding unit 14 temporarily holds the monitoring target data group received by the receiving unit 12 over a predetermined buffer period. It is preferable that the buffer period is longer than or equal to the longest sampling period corresponding to the lowest sampling rate applicable by the sampling rate changer 162 . For example, if the longest sampling period corresponding to the lowest sampling rate that can be applied by the sampling rate changing unit 162 is "5" hours, the buffer period is preferably "5" hours or longer. If the buffer period is further lengthened, the storage capacity required for the temporary holding unit 14 increases, while a long time for analysis by the time change rate calculation unit 161 and/or the sampling rate change unit 162 in the extraction unit 16 can be secured.
  • the buffer period is typically set to twice the longest sampling period corresponding to the lowest sampling rate that can be applied by the sampling rate change unit 162 (for example, "10" time). and four times (eg, "20" hours).
  • the time change rate calculation unit 161 calculates the time change rate at each time of the monitoring target data group within the buffer period, and the sampling rate change unit 162 calculates the temporal change rate based on the calculated time change rate.
  • a sampling rate for extracting storage target data from the monitoring target data group held by the holding unit 14 is determined.
  • the sampling rate changing unit 162 applies a higher sampling rate as the calculated time change rate increases.
  • a relatively low sampling rate for example, sampling once every "5" time is used as in FIG. ) is applied by the sampling rate changer 162 .
  • the time change rate calculator 161 stores the buffer period of the temporary holding unit 14 (for example, time 19). Calculate the time change rate (time differential coefficient) at each past time included in the period of "10" hours from time “23" to time “28” retroactively and calculate the absolute value from time “23” to time “24” A negative time rate of change with a large value and a positive time rate of change with a large absolute value from time "26" to time "28" are detected.
  • the sampling rate changing unit 162 recognizes that a rapid change has occurred in the monitoring target data from time “23” to time “28", and selects a relatively high sampling rate (for example, "1") during that period. one sampling at time). In this way, according to the present embodiment, it is possible to prevent missing data from time “23" to time “28” which is highly likely to contain important suggestions in monitoring.
  • the time change rate calculator 161 stores the buffer period (for example, time Calculate the time change rate (time differential coefficient) at each past time included in the period of "10" hours from “30" to time “39” retroactively from time “35” to time “36” A negative rate of change with a large absolute value of , and a positive rate of change with a large absolute value from time “37” to time “39” are detected. Based on this calculation result, the sampling rate changing unit 162 recognizes that a rapid change has occurred in the monitored data from time “35” to time "39", and selects a relatively high sampling rate (for example, "1") during that period. one sampling at time). In this way, according to the present embodiment, it is possible to prevent missing data from time “35” to time “39” which is highly likely to contain important suggestions in monitoring.
  • the buffer period for example, time Calculate the time change rate (time differential coefficient) at each past time included in the period of "10" hours from “30" to time “39” retroactively from time “35” to time “
  • FIG. 4 shows an example of extracting multiple types of monitoring target data at a variable sampling rate in this embodiment.
  • the receiving unit 12 receives three types of monitoring target data groups D1, D2, and D3 from the industrial device 2 . If the first monitored data group D1, which is the most important among the three monitored data groups D1, D2, and D3, exceeds the threshold TH representing the upper limit of the allowable range, there is a possibility that some kind of abnormality has occurred in the industrial equipment 2. , three monitoring target data groups D1, D2, and D3 at the same time before and after the first monitoring target data group D1 exceeds the threshold value TH for diagnosing the presence or absence of an abnormality and its cause are extracted by the extraction unit 16. Stored by the storage unit 18 .
  • the storage target data D1, D2, and D3 Since the storage capacity of the storage unit 18 is limited, except for the time when the first monitoring target data group D1 exceeds the threshold value TH, the storage target data D1, D2, and D3 for only "5" time periods before and after that point are stored. Storage is allowed. Since the temporary holding unit 14 temporarily holds the three monitoring target data groups D1, D2, and D3 over the buffer period BP, the extraction unit 16 extracts the storage target data D1, D2, and D3 from the buffer period BP. It is possible to arbitrarily determine "10" times ("5" times before and after the time when the first monitoring target data group D1 exceeds the threshold TH).
  • the circles ( ⁇ ) on the graph of the first monitoring target data group D1 represent the data D1, D2, and D3 for "5" times at equal intervals before and after the point when the first monitoring target data group D1 exceeds the threshold TH.
  • An example of extraction as data to be saved is shown.
  • Triangles ( ⁇ ) on the graph of the first monitoring target data group D1 indicate the time change rates of the three monitoring target data groups D1, D2, and D3 within the buffer period BP. Then, the sampling rate changing unit 162 selects the storage target data D1, An example of changing the sampling rate for extracting D2 and D3 is shown.
  • the sampling rate changing unit 162 applies a relatively high sampling rate to the period based on the second monitoring target data group D2 that exhibits the highest time rate of change among the three monitoring target data groups D1, D2, and D3. do.
  • three types of storage target data D1, D2, and D3 are extracted at the three sampling times.
  • Such sampling of the data to be saved D1, D2, and D3 is triggered by the fact that the first data group D1 to be monitored exceeds the threshold value TH. , D3.
  • the sudden rise of the second monitored data group D2 at the three sampling times mentioned above causes the first monitored data group D1 to exceed the threshold TH.
  • data useful for monitoring the industrial device 2 is effectively extracted in consideration of correlations that may exist among a plurality of types of monitoring target data groups D1, D2, and D3. and can be stored.
  • FIG. 5 is an example of a screen presented to the administrator or the like of the monitoring target data storage device 1, and shows a list of events in which the storage unit 18 has stored monitoring target data (storage target data).
  • “Number” indicates a unique number assigned to each event
  • “Date and time” indicates the date and time when each event occurred.
  • “Abnormal parameter” indicates one or more parameters that triggered each event. For example, in the example of FIG. 4, for an event triggered by the first monitoring target data group D1 exceeding the threshold TH, the driving unit 24 or the measuring unit 26, which is the collection source of the first monitoring target data group D1, It is displayed in the column of "abnormal parameter". Further, in the example of FIG.
  • the original driving unit 24 or measuring unit 26 may be displayed together in the "abnormal parameter" column.
  • the “details link” is a link to another screen where the details of the data to be saved saved in the saving unit 18 (for example, the data D1, D2, and D3 extracted and saved at the sampling times indicated by the circles and triangles in FIG. 4) can be checked. Indicates a link such as a URL.
  • the monitoring target data storage device 1 described above can be applied to any industrial device 2 .
  • FIG. 6 shows the configuration of a printing device 10, which is an example of the industrial device 2.
  • the printing apparatus 10 includes a first printing unit 11A for printing black (K), a second printing unit 11B for printing cyan (C), a third printing unit 11C for printing magenta (M), and a yellow (Y ), and a (register) control device 30 corresponding to the control section 20 in FIG.
  • the first printing unit 11A to the fourth printing unit 11D are collectively referred to as the printing unit 11 below.
  • the printing colors of each printing unit 11 are not limited to the above, and arbitrary printing colors can be assigned to each printing unit 11 in an arbitrary order. Moreover, in order to print more colors, five or more printing units may be provided.
  • the first printing unit 11A includes a first plate cylinder 13A, a first impression cylinder 17A, a first drive motor 19A, a first encoder 21A, and a first mark sensor 23A.
  • the second printing unit 11B includes a second plate cylinder 13B, a second impression cylinder 17B, a second drive motor 19B, a second encoder 21B, and a second mark sensor 23B.
  • the third printing unit 11C includes a third plate cylinder 13C, a third impression cylinder 17C, a third drive motor 19C, a third encoder 21C, and a third mark sensor 23C.
  • the fourth printing unit 11D includes a fourth plate cylinder 13D, a fourth impression cylinder 17D, a fourth drive motor 19D, a fourth encoder 21D and a fourth mark sensor 23D.
  • the first plate cylinder 13A to the fourth plate cylinder 13D are collectively referred to as the plate cylinder 13
  • the first impression cylinder 17A to the fourth impression cylinder 17D are collectively referred to as the impression cylinder 17
  • 19D is collectively called the drive motor 19
  • the first encoder 21A to the fourth encoder 21D are collectively called the encoder 21
  • the first mark sensor 23A to the fourth mark sensor 23D are collectively called the mark sensor .
  • the printing device 10 prints on the web 50, which is a roll of paper, as a print material.
  • Each printing unit 11 is installed along the moving direction of the web 50 .
  • the web 50 is guided by the guide rollers 25 arranged along its moving path, and the printing cylinders 13 and impression cylinders 17 of each printing unit 11 produce images of respective colors corresponding to the printing plates wound around the printing cylinder 13 . Printed sequentially.
  • the plate cylinder 13 has a mark printing section 15 that prints register marks that are measured by the mark sensor 23 for register control.
  • the mark printing section 15 of the first printing unit 11A also prints reference marks for additional printing on the same web 50 .
  • the reference mark may indicate the cutting position of the web 50 after printing is completed, and is also called cut mark.
  • the first register mark is printed at a predetermined first position by the mark printing section 15 of the first plate cylinder 13A
  • the second register mark is printed at a predetermined second position by the mark printing section 15 of the second plate cylinder 13B.
  • the third register mark is printed at a predetermined third position by the mark printing section 15 of the third plate cylinder 13C
  • the fourth register mark is printed at a predetermined fourth position by the mark printing section 15 of the fourth plate cylinder 13D.
  • the first to fourth register marks are collectively referred to as register marks.
  • each printing unit 11 prints a picture of each color once by rotating each printing cylinder 13 once, and prints continuously by repeating this process.
  • Each plate cylinder 13 is rotationally driven by an individual drive motor 19 corresponding to the drive section 24 in FIG.
  • each drive motor 19 is electrically synchronized in rotation and each plate cylinder 13 is rotated under the control of a controller 30 which corresponds to the controller 20 executing the industrial software 22 of FIG. Rotate at the same rotational speed. That is, the printing apparatus 10 is configured with a sectional drive system.
  • Each drive motor 19 is provided with an encoder 21 corresponding to the measuring section 26 in FIG. 1 on its mechanical axis.
  • the encoder 21 is an incremental encoder.
  • the encoder 21 outputs a predetermined number of A-phase and B-phase pulse signals and one Z-phase pulse signal for each rotation of the plate cylinder 13 .
  • the A-phase and B-phase pulse signals are counted by a counter, and the Z-phase pulse signal resets the count value.
  • the phase (rotational position) of the plate cylinder 13 is detected from the count value of the pulse signal.
  • the encoder 21 may be of any type as long as it can detect the phase of the plate cylinder 13, and may be an absolute type serial encoder.
  • a sensor for measuring the pressure applied to the web 50 by the printer, the tension of the web 50, the temperature, humidity, atmospheric pressure, brightness, etc. around the printing apparatus 10 may be provided as the measurement unit 26 .
  • FIG. 7 is a perspective view showing the overall structure of a linear transport system 100, which is an example of the industrial equipment 2.
  • the linear transfer system 100 includes a stator 200 that forms an annular rail or track, and a plurality of movers 300A, 300B, 300C, and 300D (hereinafter referred to as moveable child 300). Electromagnets or coils provided on the stator 200 and permanent magnets provided on the mover 300 face each other to form a linear motor along an annular rail.
  • This linear motor corresponds to the drive unit 24 in FIG.
  • a sensor for measuring the position, speed, acceleration of the mover 300 to be driven by the drive unit 24, temperature, humidity, atmospheric pressure, etc. around the linear transfer system 100 may be provided as the measurement unit 26.
  • the stator 200 may be provided with a permanent magnet
  • the mover 300 may be provided with an electromagnet or a coil.
  • the rail formed by the stator 200 may be of any shape, not limited to an annular shape.
  • the rails may be linear or curved, one rail may branch into a plurality of rails, or a plurality of rails may merge into one rail.
  • the installation direction of the rail formed by the stator 200 is also arbitrary. In the example of FIG. It may be arranged in the plane of the corner or in the curved surface.
  • the stator 200 has a rail surface 210 whose normal direction is the horizontal direction.
  • the rail surface 210 extends in a belt shape along the direction of rail formation, and when forming an annular rail as in the example of FIG.
  • a plurality of electromagnets are embedded continuously or periodically in the rail surface 210 that can form rails of any shape.
  • the control unit 20 that executes the industrial software 22 of FIG. 1
  • the linear motor as the drive unit 24 supplies a drive current such as a three-phase alternating current to a large number of electromagnets
  • the mover 300 equipped with permanent magnets is moved to the rail.
  • a moving magnetic field is generated that drives linearly along the desired tangential direction.
  • the normal direction of the rail surface 210 forming the annular rail in the horizontal plane is the horizontal direction, but the normal direction of the rail surface 210 may be the vertical direction or any other arbitrary direction.
  • the positioning unit 220 provided on the upper surface or the lower surface perpendicular to the rail surface 210 has a plurality of magnetic scales (not shown) attached to the mover 300 that can measure the position of a magnetic scale (not shown) as a positioning target.
  • a positioning device (not shown) is continuously or periodically embedded.
  • a magnetic positioning device for positioning a magnetic scale formed by a striped magnetic pattern with a constant pitch generally includes a plurality of magnetic detection heads. The magnetic positioning device can measure the position of the magnetic scale with high accuracy by shifting the intervals of the plurality of magnetic detection heads with respect to the pitch or period of the magnetic pattern of the magnetic scale. In a typical magnetic positioning device provided with two magnetic detection heads, for example, the distance between the two magnetic detection heads is shifted by 1/4 pitch with respect to the magnetic pattern of the magnetic scale (the phase is shifted by 90 degrees). .
  • the positioning device provided on the stator 200 and the positioning target attached to the mover 300 are not limited to the magnetic type as described above, and may be optical or other type.
  • the mover 300 is attached with an optical scale formed by a striped pattern with a constant pitch
  • the stator 200 is provided with an optical positioning device capable of optically reading the striped pattern of the optical scale.
  • the positioning device measures the positioning target (magnetic scale or optical scale) without contact, the object conveyed by the mover 300 scatters and reaches the positioning point (top surface of the stator 200). It is possible to reduce the risk of malfunction of the positioning device when it enters.
  • the optical method if the optical scale is covered by a transported object such as liquid or powder that has entered the positioning location, the positioning accuracy will deteriorate. It is preferable to use a magnetic type that does not deteriorate the positioning accuracy.
  • the mover 300 includes a mover main body 310 facing the rail surface 210 of the stator 200, a positioning target portion 320 projecting horizontally from the top of the mover main body 310 and facing the positioning portion 220 of the stator 200, and a positioning target.
  • the mover main body 310 includes one or more permanent magnets (not shown) facing the plurality of electromagnets embedded in the rail surface 210 of the stator 200 along the rail. Since the moving magnetic field generated by the electromagnet of the stator 200 applies linear force in the rail tangential direction to the permanent magnet of the mover 300 , the mover 300 is linearly driven along the rail surface 210 with respect to the stator 200 .
  • a magnetic scale or an optical scale as a positioning target is provided on the positioning target portion 320 of the mover 300 so as to face the positioning device provided on the positioning portion 220 of the stator 200 .
  • a positioning target such as a magnetic scale is attached to the lower surface of the positioning target portion 320 of the mover 300 .
  • stator 200 it is preferable to form the rail surface 210 and the positioning part 220 on different surfaces or in a separate place, and in the mover 300, form the mover main body 310 and the positioning part 320 on different surfaces or in a separate place.
  • each device described in the embodiments can be realized by hardware resources or software resources, or by cooperation between hardware resources and software resources.
  • Processors, ROMs, RAMs, and other LSIs can be used as hardware resources.
  • Programs such as operating systems and applications can be used as software resources.
  • the present invention relates to a monitored data storage device that stores data from a monitored device.
  • 1 monitoring target data storage device 2 industrial device, 12 reception unit, 14 temporary storage unit, 16 extraction unit, 18 storage unit, 20 control unit, 24 drive unit, 26 measurement unit, 161 time change rate calculation unit, 162 sampling rate change department.

Abstract

L'invention concerne un dispositif de stockage de données cibles de surveillance (1) comprenant : une unité de réception (12) qui reçoit d'un dispositif industriel (2) des données cibles de surveillance ; une unité de conservation temporaire (14) qui conserve temporairement un groupe de données cibles de surveillance reçues au cours d'une période tampon prédéterminée ; une unité d'extraction (16) qui analyse le groupe de données cibles de surveillance de la période tampon et extrait du groupe de données cibles de surveillance des données à stocker ; et une unité de stockage (18) qui stocke les données extraites à stocker. L'unité d'extraction (16) comprend : une unité de calcul de taux de variation temporelle (161) qui calcule un taux de variation temporelle du groupe de données cibles de surveillance à chaque instant de la période tampon ; et une unité de modification de vitesse d'échantillonnage (162) qui, en fonction du taux de variation temporelle calculé, modifie la vitesse d'échantillonnage à laquelle les données à stocker sont extraites du groupe de données cibles de surveillance.
PCT/JP2022/042119 2021-12-10 2022-11-11 Dispositif, procédé et programme de stockage de données cibles de surveillance WO2023106038A1 (fr)

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JP2004319857A (ja) * 2003-04-18 2004-11-11 Matsushita Electric Ind Co Ltd 半導体製造装置のモニタリングシステム
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WO2016079771A1 (fr) * 2014-11-19 2016-05-26 三菱電機株式会社 Dispositif de commande, procédé de commande, et programme
JP2020134984A (ja) * 2019-02-12 2020-08-31 株式会社キーエンス プログラマブルロジックコントローラ及びそのログデータ保存方法
JP2020135170A (ja) * 2019-02-15 2020-08-31 ルネサスエレクトロニクス株式会社 異常検知装置、異常検知システム、異常検知方法

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