Display device, display method and program

Abstract

To facilitate comparison between respective pieces of data on multiple events that have occurred.SOLUTION: A display device 1 includes: a data extracting unit 12 that extracts, as event-occurrence-time data, data on a first item which satisfies a first condition that represents a presently occurring event among time-series data on the first item for monitoring the occurrence of the certain event; a comparison graph creating unit 13 that creates a comparison graph which lists up the multiple pieces of event-occurrence-time data extracted by the data extracting unit 12; and a display unit 30 that displays the created comparison graph.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a display device, a display method, and a program. [Background technology]

[0002] Patent Document 1 discloses a device that displays, as time-series data information, long-cycle data collected over a long period and short-cycle data collected over a short period, in relation to each other on a screen. This device displays the long-cycle data information and short-cycle data information in the form of a trend graph as a series of time-series data information showing the overall trend and the latest trend. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-87057 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when multiple specific events occur in data collected over a long period, accompanied by changes in data values, it is not easy to compare data from the occurrence of multiple specific events if the intervals between the specific events are long. [Means for solving the problem]

[0005] In order to solve the above problem, a display device according to one embodiment of the present disclosure includes a data extraction unit that extracts, from time series data of a first item for monitoring the occurrence of a specific event, data of the first item that satisfies a first condition indicating that the specific event has occurred, as data at the time of the event; a comparison graph creation unit that creates a comparison graph listing the multiple pieces of data at the time of the event extracted by the data extraction unit; and a display unit that displays the created comparison graph.

[0006] In order to solve the above problem, a display method according to one embodiment of the present disclosure includes a first step of extracting, as event occurrence data, data of a first item that satisfies a first condition indicating that a specific event has occurred from time-series data of a first item for monitoring the occurrence of a specific event; The method includes a second step of creating a comparison graph that lists a plurality of event occurrence time data extracted from the time series data, and a third step of displaying the created comparison graph.

[0007] In addition, in order to solve the above problem, a program according to one embodiment of the present disclosure causes a computer to execute the following processes: extracting data of a first item that satisfies a first condition indicating that a specific event has occurred from time series data of a first item for monitoring the occurrence of a specific event as data at the time of the event; creating a comparison graph that lists multiple data at the time of the event extracted from the time series data; and displaying the created comparison graph. [Effects of the Invention]

[0008] According to one aspect of the present disclosure, it is possible to easily compare data on multiple events that have occurred. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a block diagram showing a configuration of a display device according to an embodiment of the present disclosure. [Figure 2] 10 is a flowchart illustrating a process executed by a display device according to an embodiment of the present disclosure. [Figure 3] 1 is a diagram illustrating an example of a time series graph displayed by a display device according to an embodiment of the present disclosure. [Figure 4] 10 is a diagram illustrating an example of a comparison graph displayed by a display device according to an embodiment of the present disclosure. [Figure 5] 1 is a diagram illustrating an example of a table displayed by a display device according to an embodiment of the present disclosure. [Figure 6] 10 is another example of a time series graph displayed by a display device according to an embodiment of the present disclosure. [Figure 7] 10 is another example of a comparison graph displayed by a display device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0010] [Embodiment] A display device according to an embodiment of the present disclosure is a device used for monitoring a monitoring target such as a facility, device, or equipment, and capable of displaying a trend graph showing the tendency or behavior of data related to monitoring items of the monitoring target.

[0011] FIG. 1 is a block diagram showing the configuration of a display device 1, which is an example of a display device according to the present disclosure. The display device 1 shown in FIG. 1 can be used to monitor a gas-insulated switchgear 9, which is an example of a monitored object, used in power receiving and transforming facilities and the like. For this reason, FIG. 1 also shows the gas-insulated switchgear 9 in addition to the display device 1. The gas-insulated switchgear 9 is a device that interrupts an electric circuit and is used in high-voltage power facilities and the like. The gas-insulated switchgear 9 has a pair of electrodes therein, and when the electrodes are separated from each other, it extinguishes an arc discharge that occurs between the electrodes, thereby interrupting the electric circuit.

[0012] The display device according to the present disclosure may be used to monitor a monitoring target such as a facility, device, or instrument other than the gas-insulated switchgear 9.

[0013] As shown in FIG. 1, the display device 1 includes a control unit 10, a memory 20, and a display unit 30.

[0014] The control unit 10 has a function of performing overall control of the display device 1. The control unit 10 includes a data acquisition unit 15, a time series graph creation unit 11, a data extraction unit 12, and a comparison graph creation unit 13. The control unit 10 may further include a table creation unit 14.

[0015] The data acquiring unit 15 acquires various data from the monitoring target. For example, the data acquiring unit acquires various data from the gas-insulated switchgear 9. The data acquiring unit 15 may acquire data from the gas-insulated switchgear 9 at regular time intervals. The data acquired by the data acquiring unit 15 includes data related to monitoring items in the gas-insulated switchgear 9. The data related to the monitoring items may be an arc current value, a motor current value, an interruption time, etc. The arc current value is measured by a current sensor attached to an interruption mechanism such as an electrode. The motor current value is measured by a current sensor attached to a motor. The motor whose motor current value is measured is, for example, a motor for connecting and disconnecting electrodes. The data acquiring unit 15 may further acquire date and time data associated with each data, which is data related to information on the date and time when the data was acquired in the gas-insulated switchgear 9.

[0016] The data acquiring unit 15 may include a communication unit (not shown) for acquiring various data from the gas insulated switchgear 9. For example, the communication unit may be capable of communicating with the gas insulated switchgear 9 using a network such as a wireless local area network (LAN), a wired LAN, a wide area network (WAN), a public line network, or a mobile data communication network. The data acquiring unit 15 may store the various data acquired from the gas insulated switchgear 9 in the memory 20. The memory 20 may store, as time-series data, a table in which data on monitoring items and date and time data linked to the data are arranged in chronological order.

[0017] The time series graph creation unit 11 creates a time series graph 111 of a first item related to the occurrence of a specific event based on the time series data stored in the memory 20. The first item is an item for monitoring the occurrence of a specific event. A specific example of processing by the time series graph creation unit 11 will be described in detail below in "Example of processing by the display device 1."

[0018] The data extraction unit 12 extracts, from the time-series data stored in the memory 20, data of the first item that satisfies a first condition indicating that a specific event has occurred, as event occurrence data. The first condition is a condition indicating that a specific event has occurred. The data extraction unit 12 executes a first step of extracting, from the time-series data of the first item for monitoring the occurrence of a specific event, data of the first item that satisfies the first condition indicating that a specific event has occurred, as event occurrence data according to the present disclosure. A specific example of processing by the data extraction unit 12 will be described in detail below in "Example of processing of the display device 1."

[0019] The comparison graph creation unit 13 creates a comparison graph that lists multiple event occurrence data extracted by the data extraction unit 12. The comparison graph creation unit 13 executes a second step according to the present disclosure, which is to create a comparison graph that lists multiple event occurrence data based on the event occurrence data extracted from the time-series data. A specific example of processing by the comparison graph creation unit 13 will be described in detail below in [Example of processing by the display device 1].

[0020] The table creation unit 14 creates a table including the event occurrence data extracted by the data extraction unit 12. A specific example of the processing by the table creation unit 14 will be described in detail below in (Creating a Table).

[0021] The memory 20 is a storage device that stores various data used by the display device 1. The memory 20 can store, for example, various data acquired by the data acquisition unit 15 from the gas-insulated switchgear 9. As the memory 20, for example, a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous DRAM (SDRAM), a hard disk drive (HDD), a solid-state drive (SSD), a secure digital (SD) card, an embedded multi-media controller (eMMC), or the like, or a combination of these can be applied.

[0022] The display unit 30 displays information necessary for monitoring the gas-insulated switchgear 9. For example, the display unit 30 may display graphs or tables created by each unit of the control unit 10. The display unit 30 is a display that displays information such as images and text, and may be configured to include a display such as a liquid crystal panel. The display unit 30 executes a third step of displaying the created comparison graph according to the present disclosure.

[0023] In other words, the display device 1 according to the present disclosure includes a data extraction unit that extracts data of a first item that satisfies a first condition indicating that a specific event has occurred from the time series data of the first item for monitoring the occurrence of a specific event as data at the time of the event; a comparison graph creation unit that creates a comparison graph that lists multiple pieces of data at the time of the event extracted by the data extraction unit; and a display unit that displays the created comparison graph.

[0024] In addition, the display method according to the present disclosure includes a first step of extracting data of a first item that satisfies a first condition indicating that a specific event has occurred from time series data of a first item for monitoring the occurrence of a specific event as data at the time of the event; a second step of creating a comparison graph that lists multiple pieces of data at the time of the event extracted from the time series data; and a third step of displaying the created comparison graph.

[0025] With this configuration, the display device 1 can display a graph that extracts only data when a specific event occurs from data collected over a long period. This makes it possible to easily compare data when multiple specific events occur, even if the specific event occurs multiple times in data collected over a long period and the intervals between the occurrences of the multiple specific events are long.

[0026] [Example of processing by display device 1] Specific processing examples of the display device 1 will be described below with reference to Figs. 2 to 7. In the following example, the display device 1 is a device that monitors the gas-insulated switchgear 9, and the specific event is a current interruption event indicating that a current has been interrupted. In the following, the first item related to the occurrence of the specific event is the arc current value, and the first condition indicating that the specific event has occurred is a condition in which the arc current value exceeds a set threshold value. The arc current value is a measured value of the current of an arc discharge that occurs between the electrodes of the gas-insulated switchgear 9.

[0027] FIG. 2 is a flowchart showing an example of processing executed by the display device 1.

[0028] When the display process by the display device 1 is started, the time series graph creating unit 11 creates a time series graph 111 of the arc current value based on the time series data stored in the memory 20 (S11). The time series graph creating unit 11 may update the time series graph 111 at regular intervals to reflect the latest time series data.

[0029] 3 is an exemplary time series graph 111 created by the time series graph creation unit 11 and displayed by the display unit 30. The time series graph creation unit 11 may acquire time series data of the arc current value stored in the memory 20 and create a time series graph 111, as shown in FIG. 3, in which the horizontal axis represents date and time (elapsed time) and the vertical axis represents current [A].

[0030] The arc current value is data related to the occurrence of a current interruption event. Specifically, the arc current value changes as a current interruption event occurs. When a current interruption event does not occur in the gas-insulated switchgear 9, no arc discharge occurs, and the arc current value is 0 [A]. On the other hand, when a current interruption event occurs in the gas-insulated switchgear 9, an arc discharge occurs as the electric circuit is interrupted, and the arc current value increases. Then, when the arc discharge is extinguished, the arc current value becomes 0 [A] again.

[0031] Next, when the control unit 10 receives an instruction to create a comparison graph (S11), the data extraction unit 12 extracts data of a first item that satisfies a first condition from the time-series data recorded in the memory 20 as event occurrence data. Specifically, the data extraction unit 12 extracts data of arc current values ​​exceeding a set threshold from the time-series data recorded in the memory 20 (S12). The instruction to create the comparison graph may be input by a user via an input unit (not shown), such as a keyboard or touch panel, provided in the display device 1. The "condition of exceeding a set threshold" is an example of the first condition according to the present disclosure. The first condition may be, for example, a condition that can determine whether a specific event has occurred in the first item. For example, in the example flow shown in FIG. 2, the set threshold may be a threshold for an arc current value that can determine whether a current interruption event has occurred.

[0032] The data extraction unit 12 extracts the event occurrence data, thereby making it possible to extract the first item of data when a specific event occurs.

[0033] In step S12, the data extracting unit 12 may extract, as the event occurrence data, data of the first item within a predetermined period immediately before and after the period in which the data of the first item satisfies the first condition. Specifically, the data extracting unit 12 may further extract immediately before data acquired within a predetermined period immediately before the period in which the data of the arc current value exceeds the threshold and immediately after data acquired within a predetermined period immediately after the period. In other words, the data extracting unit 12 may extract the immediately before data and the immediately after data in addition to the event occurrence data. The predetermined period during which the immediately before data and the immediately after data are acquired can be arbitrarily set by the user.

[0034] As shown in Figure 3, when the first condition is set to a condition that the threshold value is exceeded, the threshold value needs to be set small in order to acquire data when the arc current value starts to rise and when it finishes falling. However, when the threshold value is set small, there is a possibility that the data extraction unit 12 will extract data other than the desired data. Therefore, by acquiring data for a predetermined period before and after the period that satisfies the first condition, the accuracy of the extraction of data at the time of the event occurrence can be improved and all data at the time of the specific event occurrence can be extracted.

[0035] Furthermore, the data extracting unit 12 may extract the event occurrence data from the time-series data for a specified period. Specifically, the data extracting unit 12 may extract arc current values ​​exceeding a threshold value from the time-series data of arc current values ​​for a specified period. The specified period may be a period designated by a user, and the user may specify the period via an input unit (not shown) such as a keyboard or a touch panel provided in the display device 1. With this configuration, data for a period desired by the user can be displayed.

[0036] Next, the comparison graph creation unit 13 creates a comparison graph 131 based on the multiple pieces of event occurrence data extracted by the data extraction unit 12 in step S12 (S13), and the display unit 30 displays the comparison graph 131 created by the comparison graph creation unit 13 in step S13 (S14).

[0037] Fig. 4 is an exemplary comparison graph 131 created by the comparison graph creation unit 13 and displayed by the display unit 30. By using the arc current value data extracted by the data extraction unit 12, the comparison graph creation unit 13 can create the comparison graph 131, which shows a comparison of the transition of the arc current value for each occurrence of a specific event, as shown in Fig. 4. The vertical axis of the comparison graph 131 indicates the current [A] of the arc current value, and the horizontal axis indicates the occurrence of the specific event.

[0038] Furthermore, as shown in FIG. 4, the comparison graph creation unit 13 may create a comparison graph 131 by attaching date and time data to the event occurrence data. The date and time data is data related to the date and time when the arc current value was acquired, and is acquired in association with the arc current value when the data acquisition unit 15 acquires the arc current value data. The comparison graph creation unit 13 may create the comparison graph 131 by attaching date and time data, for example, of the time when the arc current value started to increase from zero, the time when the arc current value reached its maximum, or the time when the arc current value returned to zero. The date and time data to be displayed in the comparison graph may be specified by the user. By obtaining a graph including date and time data in addition to a graph showing the transition of the arc current value, it becomes easier to identify the date and time when a specific event occurred.

[0039] In the above example, the specific event is a current interruption event, and the first item is an arc current value. However, the specific event may be, for example, an abnormality or accident occurrence event of the monitored object. In this case, the first item may be a monitored item whose value changes when an abnormality or accident occurs.

[0040] (Creating a table) The display device 1 includes a table creation unit 14. FIG. 5 shows an exemplary table created by the table creation unit 14 and displayed by the display unit 30. The table created by the table creation unit 14 may be in, for example, CSV format or Excel format. The display device 1 may display data within the range shown in the comparison graph 131 in table format, for example, based on a user instruction. This allows the user to check detailed numerical values ​​of the data shown in the graph.

[0041] (Another example of a time series graph and comparison graph) FIG. 6 shows a time series graph 132 created by the time series graph creating unit 11 of the display device 1 and displayed by the display unit 30.

[0042] The time series graph creation unit 11 may obtain time series data of the arc current value, the motor current value, and the interruption time stored in the memory 20, and create a time series graph 132 in which the horizontal axis represents elapsed time and the vertical axis represents current [A] vs. time [t], as shown in Fig. 6. More specifically, the time series graph creation unit 11 may create a time series graph including at least one of an interruption current value indicating the maximum value of the arc current value, a motor current value measured from the motor provided in the gas-insulated switchgear 9, and an accumulated interruption current value indicating a value obtained by accumulating the interruption current values.

[0043] The data extracting unit 12 extracts, for example, data on the motor current, the interruption time, and the cumulative interruption current corresponding to the date and time when the interruption current was detected.

[0044] 7 shows a comparison graph 133 created by the comparison graph creation unit 13 of the display device 1 and displayed by the display unit 30. The comparison graph creation unit 13 may create the comparison graph 133 further including at least one of an interruption current value indicating the maximum arc current value, a motor current value measured from the motor provided in the gas-insulated switchgear 9, and a cumulative interruption current value indicating the cumulative value of the interruption current values. By using the data on the interruption current, motor current, interruption time, and cumulative interruption current extracted by the data extraction unit 12, the comparison graph creation unit 13 can create the comparison graph 133 in a format that compares each piece of data for each occurrence of a current interruption event, as shown in FIG. 7. The vertical axis of the comparison graph 133 represents current [A] and time [t], and the horizontal axis represents the number of occurrences of an interruption event.

[0045] By using the horizontal axis to represent the number of interruptions, it is possible to easily compare the numerical data for each specific event. Also, with data such as cumulative interruption current, it is difficult to determine from the slope of the time series graph 132 how much the data has increased with each occurrence of a current interruption event. On the other hand, with the comparison graph 133, it is possible to determine the degree of increase with each occurrence from the slope.

[0046] Furthermore, the time series graph 132 and the comparison graph 133 may include data on the interruption time. The interruption time is the time from when the interruption starts to when it is completed. When the interruption performance of the gas-insulated switchgear 9 deteriorates due to aging and wear, the interruption time value tends to increase. Therefore, including the interruption time data in the time series graph 132 and the comparison graph 133 can contribute to the early detection of malfunctions that may occur in the gas-insulated switchgear 9.

[0047] The time series graph 132 and the comparison graph 133 may be displayed in correspondence with the time series graph 111 shown in FIG. 3 and the comparison graph 131 shown in FIG. 4, respectively.

[0048] The time series graph 132 and the comparison graph 133 show measured values ​​other than the arc current value. For example, if it can be seen that the motor current value increases with each specific event, it can be seen that the motor may be wearing out or deteriorating over time. In this way, it is possible to easily grasp trends that would be difficult to grasp from the arc current value alone.

[0049] For example, the longer the elapsed time between a specific event and the next specific event relative to the elapsed time of the arc current value at which the specific event occurred, the larger the gap between the arc current values ​​between specific events becomes when the time series graph 111 is visually displayed using the display unit 30, making it difficult to compare the arc current values ​​between specific events. On the other hand, by extracting the arc current values ​​of specific events and displaying them as a comparison graph 131, it is possible to exclude the elapsed time during which the specific event did not occur, making it easier to compare data for multiple events that have occurred. In addition, the arc current values ​​at the time of the specific events can be displayed side by side, allowing users to intuitively grasp trends.

[0050] [Software implementation example] The program according to the present disclosure causes a computer to execute the following processes: extracting data of a first item that satisfies a first condition indicating that a specific event has occurred from time series data of a first item for monitoring the occurrence of a specific event as data at the time of the event; creating a comparison graph that lists multiple pieces of data at the time of the event extracted from the time series data; and displaying the created comparison graph.

[0051] The control block (particularly the control unit 10) of the display device 1 may be realized by a logic circuit (hardware) formed on an integrated circuit (IC chip) or the like, or may be realized by software.

[0052] In the latter case, the display device 1 includes a computer that executes instructions from a program, which is software that realizes each function. The computer includes, for example, one or more processors and a computer-readable recording medium storing the program. The object of the present disclosure is achieved when the processor in the computer reads and executes the program from the recording medium. The processor may be, for example, a central processing unit (CPU). The recording medium may be a "non-transitory tangible medium," such as a read-only memory (ROM), tape, disk, card, semiconductor memory, or programmable logic circuit. The display device may also include a random access memory (RAM) for loading the program. The program may be supplied to the computer via any transmission medium capable of transmitting the program (such as a communication network or broadcast waves). Note that one aspect of the present disclosure may also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

[0053] 〔summary〕 A display device according to aspect 1 of the present disclosure includes a data extraction unit that extracts data of a first item for monitoring the occurrence of a specific event, which satisfies a first condition indicating that the specific event has occurred, as event occurrence data, from time series data of the first item; a comparison graph creation unit that creates a comparison graph listing multiple event occurrence data extracted by the data extraction unit; and a display unit that displays the created comparison graph.

[0054] A display device according to a second aspect of the present disclosure is in accordance with the first aspect, wherein the first condition is a condition that a set threshold value is exceeded.

[0055] In a display device according to aspect 3 of the present disclosure, in aspect 1 or aspect 2, the data extraction unit extracts as the event occurrence data not only the period during which the data for the first item satisfies the first condition, but also the data for the first item within a predetermined period immediately before and after the period.

[0056] In a display device according to aspect 4 of the present disclosure, in any one of aspects 1 to 3, the comparison graph creation unit creates the comparison graph by attaching date and time data relating to the date and time when the data of the first item was acquired to the event occurrence data.

[0057] A display device according to a fifth aspect of the present disclosure is any one of the first to fourth aspects, wherein the data extraction unit extracts the event occurrence data from the time-series data during a designated period.

[0058] The display device according to a sixth aspect of the present disclosure is any one of the first to fifth aspects, further comprising a table creation unit that creates a table including the event occurrence data extracted by the data extraction unit.

[0059] The display device according to aspect 7 of the present disclosure is used to monitor a gas-insulated switchgear in any of aspects 1 to 6, wherein the specific event is a current interruption event in the gas-insulated switchgear, and the first item is an arc current value.

[0060] In a display device according to aspect 8 of the present disclosure, in aspect 7, the comparison graph creation unit creates a comparison graph further including at least one of an interruption current value indicating the maximum value of the arc current value, a motor current value measured from a motor equipped in the gas-insulated switchgear, and a cumulative interruption current value indicating a value obtained by accumulating the interruption current values.

[0061] A display method according to aspect 9 of the present disclosure includes a first step of extracting data of a first item for monitoring the occurrence of a specific event, from time series data of the first item, that satisfies a first condition indicating that a specific event has occurred, as event occurrence data; a second step of creating a comparison graph listing multiple event occurrence data extracted from the time series data; and a third step of displaying the created comparison graph.

[0062] A display program according to aspect 10 of the present disclosure causes a computer to execute the following processes: extracting data of a first item that satisfies a first condition indicating that a specific event has occurred from time series data of a first item for monitoring the occurrence of a specific event as data at the time of the event; creating a comparison graph that lists multiple pieces of data at the time of the event extracted from the time series data; and displaying the created comparison graph.

[0063] The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present disclosure. [Explanation of symbols]

[0064] 1 Display device 9 Gas-insulated switchgear 10 Control Unit 11 Time series graph creation section 12 Data Extraction Section 13 Comparison Graph Creation Department 14 Table Creation Section 15 Data Acquisition Section 20 memory 30 Display section 111, 132 Time series graph 131, 133 comparison graph

Claims

1. a data extraction unit that extracts, from time-series data of a first item for monitoring the occurrence of a specific event, data of the first item that satisfies a first condition indicating the occurrence of the specific event as event occurrence data; a comparison graph creation unit that creates a comparison graph listing the plurality of event occurrence data extracted by the data extraction unit; a display unit that displays the created comparison graph.

2. The display device according to claim 1 , wherein the first condition is a condition that a set threshold value is exceeded.

3. The display device according to claim 2, wherein the data extraction unit extracts data of the first item during a period in which the data of the first item satisfies the first condition, as well as data of the first item during a predetermined period immediately before and after the period in which the data satisfies the first condition, as the data at the time of the event occurrence.

4. The display device according to claim 1 , wherein the comparison graph creating unit creates the comparison graph by adding date and time data relating to the date and time when the data of the first item was acquired to the event occurrence data.

5. The display device according to claim 1 , wherein the data extracting section extracts the event occurrence data from the time-series data during a specified period.

6. The display device according to claim 1 , further comprising a table creation unit that creates a table including the event occurrence data extracted by the data extraction unit.

7. 2. The display device according to claim 1, which is used to monitor a gas-insulated switchgear, wherein the specific event is a current interruption event in the gas-insulated switchgear, and the first item is an arc current value.

8. 8. The display device according to claim 7, wherein the comparison graph creation unit creates a comparison graph further including at least one of an interrupting current value indicating a maximum value of the arc current value, a motor current value measured from a motor included in the gas-insulated switchgear, and a cumulative interrupting current value indicating a value obtained by accumulating the interrupting current values.

9. a first step of extracting, from time-series data of a first item for monitoring the occurrence of a specific event, data of a first item that satisfies a first condition indicating the occurrence of the specific event as event occurrence data; a second step of creating a comparison graph listing multiple event occurrence data extracted from the time series data; and a third step of displaying the created comparison graph.

10. On the computer, extracting, from time-series data of a first item for monitoring the occurrence of a specific event, data of the first item that satisfies a first condition indicating the occurrence of the specific event as event occurrence data; A process of creating a comparison graph that lists multiple event occurrence data extracted from the time series data; A program for executing a process of displaying the created comparison graph.

Images