Data collecting device

Abstract

To easily classify process data.SOLUTION: A data collection device according to the present invention includes: a data acquisition unit that acquires process data of a monitoring target and inspection data indicating an inspection result of the monitoring target; a storage unit that stores the process data acquired by the data acquisition unit, date and time information indicating a measurement date and time of the process data or a date and time when the process data is acquired by the data acquisition unit, the inspection data, and date and time information indicating a date and time when the inspection data is transmitted or a date and time when the inspection data is acquired by the data acquisition unit; and a label adding unit that adds a label corresponding to the inspection result indicated by the inspection data, to the process data of date and time information of a date and time immediately before or immediately after the date and time of the date and time information of the inspection data.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a data collection device. [Background technology]

[0002] An example of a system for collecting data on abnormal events is the data collection system disclosed in Patent Document 1. In this system, a worker at a production site inputs the details of the abnormal event into an edge computer, which then transmits the input data to a data collection server. The data collection server automatically assigns meaning to the details of the abnormal event contained in the collected data using a database in which keywords and abnormal events are registered in association with each other, and stores the assigned meaning data. The data assigned meaning by the data collection server can be used as log data on abnormalities that have occurred in the past. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-102101 Summary of the Invention [Problem to be solved by the invention]

[0004] In plant facilities, process data indicating the operating status of the facilities is acquired from sensors and measuring instruments, analyzed, and anomalies are detected. Furthermore, in plant facilities, inspectors enter the inspection results of the facilities into terminal devices during patrol inspections, and the inspection results are recorded as inspection data separately from the plant data. When the invention of Patent Document 1 is applied to this inspection data, the inspection data obtained when an anomaly is discovered can be given meaning using a database in which keywords and abnormal events are associated and registered, thereby identifying data related to the anomaly. However, because the process data is numerical data, it cannot be given meaning using the invention of Patent Document 1. Furthermore, because the state of a plant changes constantly and there is a large amount of process data, identifying and analyzing data indicating an anomaly is time-consuming.

[0005] The present invention has been made in view of the above, and has an object to easily classify process data. [Means for solving the problem]

[0006] A data collection device according to one aspect of the present invention includes: a data acquisition unit that acquires process data of a monitoring target and inspection data indicating inspection results of the monitoring target; a memory unit that stores the process data acquired by the data acquisition unit and date and time information indicating the measurement date and time of the process data or the date and time at which the data acquisition unit acquired the process data, and the inspection data and date and time information indicating the date and time at which the inspection data was transmitted or the date and time at which the data acquisition unit acquired the inspection data; and a label addition unit that adds a label corresponding to the inspection result indicated by the inspection data to process data having date and time information of a date and time immediately before or after the date and time of the date and time information of the inspection data.

[0007] Furthermore, in a data collection device according to one aspect of the present invention, the data acquisition unit acquires maintenance data indicating the maintenance content and the cause of the maintenance of the monitored object, the memory unit stores the maintenance data acquired by the data acquisition unit and date and time information of the maintenance data, and the label addition unit may add a label corresponding to the cause of the maintenance indicated by the maintenance data to process data including date and time information immediately before the date and time information of the maintenance data.

[0008] In addition, in a data collection device according to an aspect of the present invention, the label adding unit may add the label to process data having date and time information for a period between the date and time of the date and time information of the process data to which the label is added and the date and time of the date and time information of the maintenance data.

[0009] In addition, in a data collection device according to one aspect of the present invention, the label adding unit may determine whether to add a label to the process data having date and time information immediately before the date and time information of the inspection data, or to the process data having date and time information immediately after the date and time information of the inspection data, depending on the inspection result indicated by the inspection data. [Effects of the Invention]

[0010] According to the present invention, process data can be easily classified. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing the configuration of a data collection system according to an embodiment. [Figure 2] FIG. 2 is a block diagram showing the configuration of the data collection device according to the embodiment. [Figure 3] FIG. 3 is a functional block diagram showing functions realized by the data collection device 10. As shown in FIG. [Figure 4] FIG. 4 is a diagram illustrating an example of measurement data and a label according to the embodiment. [Figure 5]FIG. 5 is a diagram illustrating an example of inspection data according to the embodiment. [Figure 6] FIG. 6 is a diagram illustrating an example of measurement data and labels according to the embodiment. [Figure 7] FIG. 7 is a diagram illustrating an example of inspection data according to the embodiment. [Figure 8] FIG. 8 is a diagram illustrating an example of measurement data and labels according to the embodiment. [Figure 9] FIG. 9 is a diagram illustrating an example of maintenance data according to the embodiment. [Figure 10] FIG. 10 is a diagram illustrating an example of measurement data and a label according to the embodiment. [Figure 11] FIG. 11 is a diagram illustrating an example of measurement data and labels according to the embodiment. [Figure 12] FIG. 12 is a diagram illustrating an example of measurement data and labels according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments described below. In addition, in the description of the drawings, the same or corresponding elements are appropriately designated by the same reference numerals.

[0013] FIG. 1 is a diagram showing the configuration of a data collection system 1 according to an embodiment of the present invention. The data collection system 1 is a system that collects data on a monitoring target 2. The monitoring target 2 is, for example, a plant facility, and includes an electric motor 30 having a rotating shaft 30a, a first bearing 41, a second bearing 42, and a load 50. The electric motor 30 rotates the rotating shaft 30a using supplied power, thereby driving the load 50 connected to the rotating shaft 30a. The first bearing 41 and the second bearing 42 are bearings that support the rotating shaft 30a. The first bearing 41 is installed on the electric motor 30 side of the rotating shaft 30a, and the second bearing 42 is installed on the load 50 side of the rotating shaft 30a. The load 50 is, for example, a pump, and is driven by the rotating shaft 30a. Note that the load 50 is not limited to a pump and may be, for example, a blower, a compressor, or a conveying device.

[0014] The first sensor 31 is installed on the first bearing 41, and the second sensor 32 is installed on the second bearing 42. The first sensor 31 measures the temperature of the first bearing 41, and the second sensor 32 measures the temperature of the second bearing 42. Furthermore, the first sensor 31 measures the vibration of the first bearing 41, and the second sensor 32 measures the vibration of the second bearing 42. The first sensor 31 and the second sensor 32 measure, for example, acceleration as a physical quantity representing vibration. The first sensor 31 and the second sensor 32 measure temperature and vibration (acceleration) and transmit measurement data indicating the measurement results, which is an example of process data, to the transmitting device 20, for example, by wireless communication. The first sensor 31 and the second sensor 32 may also transmit the measurement data to the transmitting device 20 via a wired connection.

[0015] The communication network NW is a communication network configured from an internet network, a mobile phone network, etc. The transmitting device 20 is a device that transmits measurement data to the data collecting device 10. The transmitting device 20 transmits the measurement data acquired from the first sensor 31 and the second sensor 32 at a predetermined cycle to the data collecting device 10 via the communication network NW. This cycle is, for example, one hour, but is not limited to one hour and may be less than one hour or more than one hour. Note that the first sensor 31 and the second sensor 32 may transmit the measurement data to the data collecting device 10 via the communication network NW without going through the transmitting device 20.

[0016] The terminal device 11 is a computer device that can be carried by a plant worker, such as a tablet terminal or a smartphone. The terminal device 11 is carried by a worker who patrols and inspects the monitored object 2 or a worker who maintains the monitored object 2. The terminal device 11 is capable of wireless communication, and transmits inspection result data and maintenance-related data entered by the worker to the data collection device 10 via the communication network NW.

[0017] The data collection device 10 is a computer device that collects measurement data transmitted from the transmission device 20 and inspection data and maintenance data transmitted from the terminal device 11. The data collection device 10 has a function of automatically labeling the measurement data transmitted from the transmission device 20. The labeled measurement data is used, for example, to diagnose the monitored object 2.

[0018] FIG. 2 is a block diagram showing the configuration of the data collection device 10. The data collection device 10 is configured by a processor 101, a memory 102, a storage 103, and a communication I / F 104, all connected to a bus 105. The memory 102 is, for example, a random access memory (RAM) and is configured as a volatile memory or a nonvolatile memory. The memory 102 serves as a workspace for the processor 101 when performing arithmetic processing, and stores the results of the arithmetic processing performed by the processor 101. The storage 103, which is an example of a storage unit, is configured by a read-only memory (ROM) and an auxiliary storage device such as an HDD (hard disk drive) or an SSD (solid state drive). The ROM of the storage 103 stores programs used by the processor 101 to perform arithmetic processing. The auxiliary storage device of the storage 103 stores data used by the processor 101 to perform arithmetic processing. The communication I / F 104 is configured to include a communication module that performs information communication via wired or wireless communication. The communication I / F 104 communicates with the transmitting device 20 and the terminal device 11 via the communication network NW.

[0019] The processor 101 is, for example, a CPU (Central Processing Unit), which reads a program from the storage 103 and executes it using the memory 102 as a work space. The processor 101 executes the program, thereby realizing the functions of the data collection device 10.

[0020] 3 is a functional block diagram showing functions realized in the data collecting device 10 by the processor 101 executing a program. The data acquiring unit 101a acquires data transmitted by the transmitting device 20 or the terminal device 11. The label adding unit 101b adds a label corresponding to the inspection result indicated by the inspection data to measurement data (process data) including date and time information of a date and time immediately before or after the date and time information indicating the date and time when the inspection data acquired by the data acquiring unit 101a was transmitted.

[0021] Next, an operation example of the embodiment will be described. The transmitting device 20 transmits measurement data acquired from the first sensor 31 and the second sensor 32 at a predetermined cycle to the data collecting device 10. The data collecting device 10 stores the transmitted measurement data in the storage 103.

[0022] FIG. 4 is a diagram showing an example of measurement data 103a stored in storage 103. The measurement data 103a transmitted from transmission device 20 includes date and time information indicating the date and time when the temperature and vibration were measured, temperature information indicating the temperature, and vibration information indicating the vibration (acceleration). The data collection device 10 adds labels 103b indicating the characteristics of the data to the measurement data 103a stored in storage 103. The label "inspection result" included in label 103b is a label added based on the results of the worker's visual inspection of monitoring target 2, and the label "status" included in label 103b is a label added based on the results of the worker's maintenance of monitoring target 2. The label 103b is blank (null) in the initial state when measurement data 103a is stored in storage 103.

[0023] When a worker performs a visual inspection, the worker inputs the inspection results into the terminal device 11 and performs an operation to transmit the inspection results to the data collection device 10. When this operation is performed, the terminal device 11 transmits inspection data indicating the input inspection results to the data collection device 10. The data collection device 10 stores the transmitted inspection data in the storage 103.

[0024] 5 is a diagram showing an example of inspection data 103c stored in storage 103. The inspection data 103c includes information on the date and time when the terminal device 11 transmitted the inspection data 103c and information on the inspection results entered by the worker. For example, if the worker enters "no abnormalities" as the result of the inspection, the "inspection results" column of the inspection data 103c will be as shown in FIG. 5.

[0025] When the data collection device 10 stores the inspection data 103c, it determines whether to update the label 103b for the stored measurement data 103a. Here, if the "inspection result" column in the newly acquired inspection data 103c is "no abnormality," the data collection device 10 does not update the label 103b for the stored measurement data 103a.

[0026] When the data collection device 10 acquires inspection data 103c in which the measurement data 103a and label 103b are in the state shown in Figure 6 and the date and time information has the date and time of "2024 / 04 / 03 11:15" and the inspection result column is "abnormal noise" as shown in Figure 7, in the measurement data 103a, in the row with the date and time information of "2024 / 04 / 03 11:00" that is closest to the date and time information of the acquired inspection data 103c, "2024 / 04 / 03 11:15", the "inspection result" column is updated with "abnormal noise" in the "inspection result" column of the inspection data 103c, as shown in Figure 8.

[0027] In this example, if an abnormality is detected at the inspection time indicated by the date and time information, "2024 / 04 / 03 11:15," it is likely that the abnormality has already occurred at a time close to the inspection time, "2024 / 04 / 03 11:00." Therefore, by labeling the measurement data 103a whose date and time information is "2024 / 04 / 03 11:00," which is close to the time when the abnormality was detected, as "abnormal noise," the measurement data 103a at the time of the abnormality can be classified.

[0028] Next, an example of the operation when a worker performs maintenance on the monitored object 2 will be described. The worker who performed the maintenance on the monitored object 2 inputs the inspection results of the monitored object 2, the cause of any abnormalities found during the inspection, and the details of the maintenance performed into the terminal device 11, and performs an operation to transmit the input details to the data collecting device 10. When this operation is performed, the terminal device 11 transmits maintenance data indicating the input details to the data collecting device 10. The data collecting device 10 stores the transmitted maintenance data in the storage 103.

[0029] 9 is a diagram showing an example of maintenance data 103d stored in storage 103. The maintenance data 103d includes information on the date and time when the terminal device 11 transmitted the maintenance data 103d (date and time information), information on the inspection results of the monitoring target 2, information on the cause of the abnormality found in the inspection, and information on the maintenance details for the monitoring target 2. For example, if a worker confirms an abnormal noise as an example of an abnormality in the monitoring target 2 and repairs fault A, which is the cause of the maintenance, the worker will input "abnormal noise" as the inspection result, "fault A" as the cause of the maintenance, and "repair fault A" as the maintenance details, and the contents of the maintenance data 103d will be as shown in FIG. 9.

[0030] When the data collection device 10 acquires the maintenance data 103d, it adds a label 103b to the measurement data 103a based on the acquired maintenance data 103d. Specifically, the data collection device 10 identifies a row in the measurement data 103a whose date and time precedes the date and time of the date and time information in the acquired maintenance data 103d and whose content in the "inspection result" column is the same as the content in the "inspection result" column in the maintenance data 103d. The data collection device 10 then updates the content of the "inspection result" column in the measurement data 103a from the row with the most recent date and time information to the identified row with the information in the "inspection result" column in the acquired maintenance data 103d, and updates the content of the "status" column from the identified row to the row with the most recent date and time with the information in the "cause" column in the acquired maintenance data 103d.

[0031] For example, if the measurement data 103a is in the state shown in Figure 10(a) and the "inspection result" column in the maintenance data 103d is "abnormal noise" and the "cause" column is "fault A" as shown in Figure 9, the data collecting device 10 identifies the second row where the "inspection result" column is "abnormal noise" and the date and time information in the maintenance data 103d is earlier than "2024 / 04 / 03 15:40", and updates the "inspection result" column from the sixth row to the third row to "abnormal noise" as shown in Figure 10(b). Also, the data collecting device 10 updates the "status" column from the second row to the sixth row of the measurement data 103a to "fault A" as shown in Figure 10(b). In addition, the data collection device 10 does not update the "Inspection Result" column and the "Status" column for the measurement data 103a with date and time information from rows where the "Inspection Result" is "No Abnormality" going back from the date and time information of the latest date and time information.

[0032] 11(b), for the row of date and time information "2024 / 04 / 03 15:00" in the measurement data 103a, which is closest to the date and time information "2024 / 04 / 03 15:40", the "Inspection Result" column is updated to "Abnormal Noise" in the "Inspection Result" column of the maintenance data 103d, and the "Condition" column is updated to "Fault A" in the "Cause" column of the maintenance data 103d, as shown in FIG.

[0033] According to this embodiment, a label indicating an abnormality or a label indicating the state of the monitored object 2 is automatically added to the measurement data 103a based on the results of the patrol inspection or the results of maintenance, so that the accumulated measurement data 103a can be efficiently classified by the content or cause of the abnormality. Furthermore, the measurement data 103a assigned meaning by the data collection device 10 can be used as data related to abnormalities that have occurred in the past, and for example, by extracting and analyzing the measurement data 103a labeled as "abnormal sound," it is possible to know the characteristics of the temperature and vibration (acceleration) when the "abnormal sound" occurs.

[0034] [Variations] Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments and can be implemented in various other forms. For example, the above-described embodiments may be modified as follows to implement the present invention. The above-described embodiments and the following modifications may be combined with each other. The present invention also includes configurations in which the components of the above-described embodiments and modifications are appropriately combined. Furthermore, further effects and modifications can be easily derived by those skilled in the art. Therefore, the broader aspects of the present invention are not limited to the above-described embodiments and modifications, and various modifications are possible.

[0035] In the above-described embodiment, when the data collecting device 10 acquires the inspection data 103c, it adds a label to the row in the measurement data 103a whose date and time is closest to and earlier than the date and time of the acquired inspection data 103c. However, the rule for adding the label is not limited to the rule in the embodiment. For example, when an abnormality occurs in the monitoring target 2, depending on the nature of the abnormality, the abnormality may continue until the cause of the abnormality is resolved. For example, when the content of the inspection result in the inspection data 103c indicates that the abnormality will continue until the cause is resolved, the data collecting device 10 may add a label based on the acquired inspection data 103c to the measurement data 103a whose transmission date and time is later than the date and time of the inspection data 103c.

[0036] For example, when the data collecting device 10 acquires inspection data 103c with date and time information of "2024 / 04 / 03 11:15" when the measurement data 103a is in the state shown in Figure 6, and then acquires measurement data 103a with date and time information of "2024 / 04 / 03 12:00", as shown in Figure 12, the data collecting device 10 updates the "inspection result" column in the row with date and time information of "2024 / 04 / 03 12:00" in the measurement data 103a with the inspection result of "abnormal noise" from the acquired inspection data 103c.

[0037] Furthermore, the data collecting device 10 may determine a row in the measurement data 103a for which a label is to be updated, depending on information in the "Inspection Result" column of the acquired inspection data 103c. For example, when the content of the "Inspection Result" column of the acquired inspection data 103c indicates an abnormality caused by aging deterioration, the data collecting device 10 may update the "Inspection Result" column of the measurement data 103a, in a row whose date and time information is earlier than and closest to the date and time information of the inspection data 103c, with the content of the "Inspection Result" column of the inspection data 103c. When the content of the "Inspection Result" column of the acquired inspection data 103c indicates an abnormality that occurs suddenly, the data collecting device 10 may update the "Inspection Result" column of the measurement data 103a, in a row whose date and time information is later than and closest to the date and time information included in the inspection data 103c, with the content of the inspection result column of the inspection data 103c.

[0038] In the present invention, the monitored object 2 is not limited to the electric motor 30, the first bearing 41, the second bearing 42, and the load 50, but may also be an industrial plant, a petrochemical plant, or an environmental plant.

[0039] In the present invention, the measurement data is not limited to temperature and vibration, but may be other physical quantities such as current and voltage depending on the monitored object 2.

[0040] In the embodiment, the date and time information in the measurement data 103a stored in the storage 103 is information indicating the date and time when the temperature and vibration were measured, but it may also be date and time information indicating the date and time when the transmitting device 20 transmitted the measurement data, or may be date and time information indicating the date and time when the data acquiring unit 101a of the data collecting device 10 acquired the measurement data. Also, in the embodiment, the date and time information in the inspection data 103c stored in the storage 103 is information indicating the date and time when the terminal device 11 transmitted the inspection data 103c, but it may also be date and time information indicating the date and time when the data acquiring unit 101a of the data collecting device 10 acquired the inspection data 103c. [Explanation of symbols]

[0041] 1. Data Collection System 2. Monitoring targets 10 Data Collection Equipment 11 Terminal equipment 20 Transmitting device 101 processors 102 memory 103 Storage 104 Communication I / F 105 Bus 101a Data acquisition section 101b Label adding section

Claims

1. a data acquisition unit that acquires process data of the monitoring target and inspection data indicating inspection results of the monitoring target; a storage unit that stores the process data acquired by the data acquisition unit and date and time information indicating the measurement date and time of the process data or the date and time of the acquisition of the process data by the data acquisition unit, and the inspection data and date and time information indicating the transmission date and time of the inspection data or the date and time of the acquisition of the inspection data by the data acquisition unit; a label adding unit that adds a label corresponding to an inspection result indicated by the inspection data to process data having date and time information of a date and time immediately before or after the date and time information of the inspection data; A data collection device comprising:

2. the data acquisition unit acquires maintenance data indicating the maintenance content and the cause of the maintenance of the monitored object; the storage unit stores the maintenance data acquired by the data acquisition unit and date and time information of the maintenance data; The label adding unit adds a label corresponding to the cause of the maintenance indicated by the maintenance data to the process data including the date and time information immediately before the date and time information of the maintenance data. The data collection device of claim 1 .

3. The label adding unit adds the label to process data having date and time information of a period between the date and time of the date and time information of the process data to which the label is added and the date and time of the date and time information of the maintenance data. The data collection device of claim 2 .

4. The label adding unit determines whether to add a label to process data having date and time information immediately before the date and time information of the inspection data or to process data having date and time information immediately after the date and time information of the inspection data, depending on the inspection result indicated by the inspection data. The data collection device of claim 1 .

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