JP4632996B2 - Data collection device - Google Patents

Description

 The present invention relates to a data collection device that collects data indicating an operation state from a collection target device.

  In the conventional data collection device described in Patent Document 1, all the data collected from the collection target device is recorded, and the data is displayed in the requested time width according to the event information, so that the fault investigation is visually performed. Like to do.

JP-A-9-146629 (pages 6-14, FIG. 1)

  The conventional data collection device disclosed in Patent Document 1 has a problem that a large-capacity storage device is required to record all collected data, and the device becomes large and expensive.

 The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a data collection device in which the size when storing data to be collected from the collection target device is reduced. .

In the data collection device according to the present invention, in the data collection device for collecting data from the collection target device, the data collection means for collecting the data at a constant cycle, the data collected by the data collection device at a constant cycle, In addition to storing data every time a predetermined cross-section data storage time elapses, the data collected during the cross-section data storage time is only the change from the previously collected data of data collected at a fixed period Data accumulating means for accumulating data together with the collection time, a cross-section data file for accumulating data collected at a constant period each time the cross-section data accumulation time elapses, and data for changes by the data accumulating means And the change data file in which the collection time is accumulated, and the change in the change data file The storage locations over data for each cross-sectional data accumulation time, those with an index data file accumulated in correspondence with section data storage time.

As described above, according to the present invention, in the data collection device that collects data from the collection target device, the data collection unit that collects data at a constant cycle, the data collected by the data collection unit at a constant cycle, In addition to storing data every time a predetermined cross-section data storage time elapses, the data collected during the cross-section data storage time is only the change from the previously collected data of data collected at a fixed period Data accumulating means for accumulating data together with the collection time, a cross-section data file for accumulating data collected at a constant period each time the cross-section data accumulation time elapses, and data for changes by the data accumulating means And a change data file in which the collection time is stored, and storage of change data in the change data file Position, each section data storage time, since with the index data file accumulated in correspondence with section data storage time, the collected data can be reduced in size when storing.

Embodiment 1 FIG.
Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings.
1 is a block diagram showing a data collection apparatus according to Embodiment 1 of the present invention.
In FIG. 1, a data collection unit 1 collects data indicating an operation state of a collection target device output by the collection target device at a certain period. The data storage unit 2 stores the data collected by the data collection unit 1 in the stored data file 3 in the storage device.
The accumulated data file 3 is provided in the storage device, and this is a cross-sectional data file 31 that accumulates data collected every collection cycle every time a predetermined cross-section data accumulation time elapses separately from the collection cycle. It is composed of three files: a change data file 32 for accumulating change data that is a change from the previous period collection data of the period collection data, and an index data file 33 for accumulating the change data accumulation position of the change data file.
The data reading unit 4 reads stored data from the stored data file 3. The data display means 5 displays the data read by the data reading means 4. The time range input means 6 receives a time range of data to be read by the user.

FIG. 2 is a flowchart showing the operation at the time of data storage of the data collecting apparatus according to the first embodiment of the present invention.
Next, the operation at the time of data accumulation of the data collection device will be described with reference to FIG.
In step S1, data output by the collection target devices constituting the system at a certain period is collected as current period collection data. In step S2, it is checked whether or not a predetermined cross-section data accumulation time has elapsed. Here, if it has elapsed, the process of step S3 is executed only when the time has elapsed for the first time, and if not, the process of step S4 is executed.

In step S <b> 3, the current cycle collection data is accumulated in the cross-section data file 31. In step S4, the contents of the current period collection data and the previous period collection data are compared. If they do not match, the process in step S5 is executed. If they match, the process in step S9 is executed.
In step S5, change data that is the difference between the contents of the current period collection data and the previous period collection data is created, and the collected time is added as a time stamp and accumulated in the change data file 32 of the accumulation data file 3. In step S6, the accumulation position from the beginning in the change data file 32 of the change data to be accumulated next is updated.

In step S7, it is checked whether or not the cross-section data accumulation time has elapsed. Here, if it has elapsed, the process of step S8 is executed only when the time has elapsed first, and if not, the process of step S9 is executed.
In step S8, the storage position of the change data updated in step S6 is stored in the index data file 33. In step S9, the current period collection data is temporarily stored as the previous period accumulation data, and the process goes to step S1.
As a result, the cross-section data is accumulated every time the cross-section data accumulation time elapses, and the collected data between the cross-section data accumulation times can be reduced in size by accumulating only the change data. .

  According to the first embodiment, the cross-section data is accumulated every time the cross-section data accumulation time elapses, and only the change in the collected data is accumulated between the cross-section data accumulation times. Can be reduced in size.

Embodiment 2. FIG.
FIG. 3 is a flowchart showing an operation at the time of reading stored data of the data collecting apparatus according to the second embodiment of the present invention.
Next, an operation when reading the collected data accumulated in the first embodiment will be described with reference to FIG.
As an example, a case will be described in which the cross-section data accumulation time is 0 minutes per hour, and the time range of the accumulated data to be read is from 10: 10: 0 to 10: 20: 0.
In addition, although the cross-section data accumulation time is 0 minute per hour, it may be a time other than this time. The data collection period is, for example, 150 ms, but is not limited to this.

In step S20, the user inputs the time range of the stored data to be read by the time range input means 6. In the above example, the start time of the input time range is 10: 10: 0, and the end time is 10: 20: 0. In step S21, the input start time is 10: 10: 0, and the cross-sectional data is stored at 0 minutes every hour, so that the cross-sectional data stored at 10:00 is read from the cross-sectional data file 31 and stored. Store in data display memory.
In step S22, since the input start time is 10: 10: 0, and the cross-sectional data is accumulated at 0 hour every hour, the accumulation position of the change data accumulated at 10:00 in the index data file is read. . In step S23, the storage position read in step S22 is stored as a change data reading position. In step S24, change data is read from the change data read position. In step S25, the read change data is reflected in the stored data display memory.
In step S26, it is checked whether or not the time of the stored data display memory contents exceeds the start time of 10:10:10. If not, step S29 is executed.
In step S27, the stored data display memory contents are displayed. In step S28, it is checked whether or not the time stamp of the change data exceeds 10: 20: 0 of the end time. If not, the process of step S29 is performed. In step S29, the reading position is updated (+1), and the process goes to step S24.

  According to the second embodiment, the collected data accumulated as in the first embodiment can be read, and the time for reading the accumulated collected data can be shortened.

It is a block diagram which shows the data collection device by Embodiment 1 of this invention. It is a flowchart which shows the operation | movement at the time of the data storage of the data collection device by Embodiment 1 of this invention. It is a flowchart which shows the operation | movement at the time of stored data reading of the data collection device by Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Data collection means 2 Data storage means 3 Accumulated data file 31 Cross-section data file 32 Change data file 33 Index data file 4 Data reading means 5 Data display means 6 Time range input means

Claims (3)

In the data collection device that collects data from the collection target device,
Data collection means for collecting the above data at regular intervals;
The data collected by the data collection means at a constant cycle is accumulated every time a predetermined cross-section data accumulation time elapses separately from the constant cycle, and the data collected between the cross-section data accumulation times is as follows. Data accumulation means for accumulating only the change from the previously collected data of the data collected at a certain period together with the collection time;
By this data accumulating means, a cross-sectional data file in which data collected at a certain period is accumulated every time the cross-sectional data accumulation time elapses,
A change data file in which the data for the change and the collection time are stored by the data storage means;
And an index data file in which the change data storage position in the change data file is stored in correspondence with the cross-section data storage time for each cross-section data storage time .   2. The data collecting apparatus according to claim 1, further comprising: a data reading unit that reads data stored by the data storage unit; and a data display unit that displays data read by the data reading unit.   A time range input means for a user to input a time range of data read by the data reading means, wherein the data reading means reads the data based on the input time range. 2. The data collection device according to 2.

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