JPH0743731B2 - Data logger device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention is a data logger device for tabulating daily reports, monthly reports, annual reports, etc. using data such as plant process values and integrated values. Regarding

(Prior art) Conventionally, when tabulating daily reports, monthly reports, annual reports, etc. using data such as plant process values and integrated values, CPU abnormalities, PIO
Data may not be input and saved (filing) due to an abnormality in the computer, power failure, etc. In this case, the data of the day is treated as missing data, and an invalid value (hexadecimal 8000 (×
'8000'). ) Is saved. In tabulation, this invalid value is treated as space printing, and in the daily report, monthly report, annual report, etc., nothing is done on the day of missing data. In plant operation, plant equipment is operating even on the day of missing data, and it is necessary to tabulate data of process values and integrated values.

(Problems to be solved by the invention) For this reason, on the date of missing data, the operator manually writes the data on the tabulation sheet, or a file for maintenance of the data stored in the auxiliary storage device. Due to the maintenance function, the huge amount of process values of the plant,
It was necessary to key in the integrated value from the CRT device and set the data for the missing data date.

That is, the data logger function occupies an important position in the operation of the plant, and it is required to produce some accurate data even when the data logger device is down, and control (for example, demand forecast data of the water treatment plant, etc.). ) May also be required to store data related to. For example, in water treatment plants, daily reports,
There are many areas that are obliged to report monthly and annual reports to cities and prefectures. Therefore, even on the day of missing data, you must write the data to the file.

Further, when tabulation of process values and integrated values for which there is no input means from the plant for the data logger device is also required, the operator has to key in the data by the same means. In a large-scale plant, the CRT device must be exclusively occupied for key input of a huge amount of data, and the operator also needs a lot of time for input, which is an obstacle to the operation of the plant.

The object of the present invention is to rewrite the data of the missing data date when the data of the process value, integrated value, etc. from the plant was not input to the data of the similar date, so that the data logger can easily handle the tabulation and the like. To provide a device.

[Structure of Invention]

(Means for Solving Problems) In the data logger device according to the present invention, each file is divided by date, data of various process values and integrated values from the plant are stored in corresponding parts of the corresponding files, and When an abnormality occurs, a save file in which a predetermined invalid value is saved in a corresponding part of the corresponding file is searched, and the above save file is searched, and a file having the invalid value more than a planned number is determined to be a file on the missing date, Along with displaying the date, it also has a missing data replenishment function to read the file contents of the similar date by instructing the similar date to the file of the above missing date and write this to the relevant part of the file of the missing date. By doing so, the above problems have been solved.

(Operation) In the present invention, when the data cannot be input for some reason, the data of the similar date is saved as the data of the missing data by the designation of the operator, and it is as if the data was input.

(Example) The present invention will be described with reference to an example shown in FIG. A signal from the sensor 106 shown in FIG. 1 is input by a process input / output device (PIO) 015, engineering unit conversion is performed by a central processing unit (CPU) 101, and the result is stored in an auxiliary storage device 102. FIG. 2 shows a file structure of data stored in the auxiliary storage device. FIG. 3 shows a block diagram of each function. Explaining with the block diagram of FIG. 3, process value / integrated value input function 30
The plant data converted in engineering unit in 1 is stored in the process value / integrated value save file 306 by the process value / integrated value save function 302 in time series data at a certain fixed cycle. An example of the file structure is shown in FIG. In FIG. 2, 200 indicates a time unit file in the auxiliary storage device 102, and 299 indicates its contents. This example is a file example of the power receiving power of the plant, but from 1 o'clock on the 2nd to 0 o'clock on the 3rd, data is not saved due to a CPU error (down), and invalid values are saved on the file. There is. Conventionally, the file maintenance function 303 for process value / integrated value is used to input data one point for each signal using the CRT 103 and keyboard 104 shown in FIG. Was there. In the present invention, the year, month, and day of similar days are designated from the CRT 103 by the first missing data replenishment function 304 of process values and integrated values. By this designation, the file of the specified date is read from the process value / integrated value storage file 306 and moved to the file of the missing date.

Here, the determination of the similar date is performed as follows. Ie CP
Even if the process value / integrated value is not saved due to an abnormality in U, the process value / integrated value is displayed on the measurement equipment installed at the site, and the observer monitors these values when the abnormality occurs. is doing. Therefore, the days when these values are similar are regarded as similar days.

305 is a second missing data replenishment function for process values / integrated values, from the time series data initial value file 307 preset with data that is not input from the plant to the storage value 306 of the process value / integrated value every day. save. For example, there is a device that does not input data to the data logger device because the value hardly changes even if it is measured once. However, even such data may need to be saved in a file at regular intervals (every day, etc.) due to tabulation. In such a case, the data to be saved based on the above-mentioned measured values is set in advance in the time-series data initial value file 307 described above, and this is stored in the save file 306 at preset constant intervals. To configure.

FIG. 4 is an example of a CRT screen when a request for the first missing data supplement function 304 is made. First missing data replenishment function 3
When the request of 04 is made, the screen of FIG. 4 is displayed on the CRT 103 and the date of the missing data is displayed (how many hours of the day is missing data is treated as missing data? ,
It shall be configurable from the CRT). As described above, the operator determines from the past data and sets the similar date.

FIG. 5 is an example of a screen for requesting the second missing data replenishment function 305. By making a request for the second missing data replenishment function 305 and inputting the signal name, the time series data initial value setting screen of FIG. 5 is displayed on the CRT. This data is saved every day by setting the initial value.

Hereinafter, each function of the present invention will be described. FIG. 6 is a flow chart showing the processing of the first missing data replenishment method function 304. First, it is judged whether it is a supplement request for missing data (60
1) If the request is for supplementation of missing data, an invalid value is accessed from the process value / integrated value storage file 306 to obtain the missing data date. Next, the presence / absence of a missing data date is determined (608), and if there is a missing data date, the missing data date is displayed on the CRT 103 as shown in FIG. 4 (603). The operator determines the similar date of the missing data date from the past data, and performs a similar date input process (604). Next, the validity (year, month, day) of the input data is judged (605), and if it is normal, it is judged whether or not a file with a similar date exists (the existence of the file depends on the retention period of the file) (606 ) Is performed, and if the file exists, the data of the similar date is saved as the data of the missing data date (607). In the example of FIG. 7, since December 24, 1985 is the missing data day, the data example of similar day December 11, 1985 is moved.

FIG. 8 is a flow chart showing the processing of the second missing data replenishment function 305. Judge whether it is a regular time every hour (801),
Process. Next, the processing index I is cleared (802). Judgment of signal items not input by PIO (80
Perform (3) to retrieve the corresponding data from the initial value file (803) and save it in the save file. After that, the index is incremented (805) and it is judged whether the processing of all the signal points of the plant is completed (805).

In this way, even if the data is a missing date, the data of a similar day can be input as if it were the data of that day, and the initial value data can be automatically input even in the case where there is no input signal from the plant.

In the above embodiment, the data is determined by the operator as a means for obtaining the similar date of the missing date, but the data logger device determines the data of the missing date and automatically obtains the similar date. Good. In this way, the labor of the operator can be saved. At that time, as the criteria for determining similar days, 1. Obtain the latest average value for one month and use that value. 2. Use the average of the missing data for the past few years of the existing file. 3. Give the initial value. 4. Prepare a mode for similar dates, etc. that the operator judges. And the like may be used.

〔The invention's effect〕

The present invention saves data on similar dates even if a missing data date occurs due to a data logger device down,
Easily create daily, monthly and annual reports.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a data logger device according to the present invention, FIG. 2 is a diagram showing a structure example of a process value and integrated value storage file used in the present invention, and FIG. 4 and 5 are functional block diagrams of the CRT screen example for requesting the missing data replenishment function, FIG. 6 is a flowchart showing a flow chart of processing in the present invention, and FIG. 7 is a file according to the present invention. FIG. 8 is a flowchart showing an example of movement, and FIG. 8 is a flowchart showing a flow of processing in the present invention. 103 …… CRT 306 …… Saved file 304 …… Missing data supplement function

Claims (1)

[Claims] 1. Each file is classified by date, time series data of various process values and integrated values from the plant are stored in the corresponding part of the corresponding file, and when an abnormality occurs, the corresponding part of the corresponding file is previously stored. A save file in which the specified invalid value is saved, and a means for displaying the date by searching the save file, determining the date of the file portion having the invalid value more than the planned number as the missing date, and displaying the date, Input means for inputting the similar day of the day, and when the similar day is input by the above input means, the time series data stored in the file portion of the similar day is read,
The first missing data replenishing means for writing this in the corresponding time portion of the file portion corresponding to the missing date, and the predetermined value to be saved in the save file are set for the specific process value not input from the plant. The initial value file of the time series data and the value set in the initial value file of the time series data are read at every preset cycle, and the specific process value is written in the corresponding part of the save file. A data logger device comprising: second missing data supplementing means.