JPH08272433A - Process data collection device - Google Patents

Abstract

PURPOSE: To collect process data even when abnormality occurs in data collection processing time by providing results time series time and processing to be started up at a timing when prescribed frequencies of edit of time series data are completed and by processing such two processing by a time series condition. CONSTITUTION: An instantaneous value is fetched by a fixed period data request in digital communication control equipment data link processing based on the instantaneous value in which a facility signal is data-scanned from a plant 1 by digital communication control equipment 2 at every second, and it is file- stored in an instantaneous process data file 4. Moreover, the file storage of a process data file 6 of time series is performed by process data collection processing 5. A result time series time file 7 in which fixed periodical timer time is stored as a time set as the key of process data collection is provided, and moreover, processing 8 to be started up when the prescribed frequencies of edit for the time series data are completed when time is overlapped is provided, and the process data collection is stabilized by processing such two processing by the time series condition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process data collecting device.

[0002]

2. Description of the Related Art A conventional process data collecting device is based on collecting process data in a time series at a start timing of only a fixed period timer.

N1, n2, n3, n4, n5
Each minute, n6 minutes has a fixed cycle timer and collects each data.

N1: Input raw data collection from digital communication controller.

N2: average value and integrated value of raw data of n1 × 10.

N3: average value and integrated value of raw data of n1 × 30.

N4: average value and integrated value of raw data of n1 × 60.

N5: average value and integrated value of raw data of n1 × 480.

N6: average value and integrated value of raw data of n1 × 1440.

The time used as a key for data collection is a process data collection system based on the time of a fixed cycle timer.

[0011]

In the prior art, since the process data collection processing is performed by activating only the fixed cycle timer, the time overlaps at the time of time series data creation (n1 minute data at α time, α time at α time) n2 minute data), it is possible that the fixed period n2 minute timer of the n2 minute data at the α time is started earlier than the completion of the editing of the n1 minute data at the α time. In this case, (1) n2 minute data at α time is edited in 9 minutes of n1 minute data, and (2) n2 minute data at α time + 10 minutes is
The n1 minute data is edited in 11 minutes, and in the case of normal n2 minute process data editing, the average value or the integrated value of 10 points of the n1 minute data is used, which causes a problem of deterioration of data accuracy.

Further, the process data collection is basically based on time-series file storage. Even if the data collection time does not match the time-series time, the process data collection position is time-series. Equipment required.

An object of the present invention is to provide a process data collecting device based on process data collection based on time series time even when the data collection time does not match the time series time.

[0014]

In order to achieve the above object, the present invention provides an actual time series time in which a fixed cycle timer time is stored as a time which is a key for collecting process data, and further, a predetermined time series data is set. A process that is started when the number of times of editing is completed is provided, and these two processes are processed under time-series conditions.

[0015]

According to the present invention, the above objects are achieved by the following operations.

It is possible to collect process data when the data collection processing time is abnormal and provide highly accurate process data.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

FIG. 1 shows an example of a processing configuration of a process data collecting apparatus for carrying out the present invention. Based on an instantaneous value obtained by scanning a facility signal from a plant 1 by a digital communication control unit 2 every second, The instantaneous value is fetched in response to the constant period data request of the digital communication controller data link processing 3, and the instantaneous process data file 4 is stored in the file. Furthermore, based on the instantaneous process data, n1
Min, n2 min, n3 min, n4 min, n5 min, n6 min The process data collection process 5 for collecting data stores the time-series process data file 6 as a file.

The method for capturing the instantaneous process data of the embodiment is the same as that of the prior art, but the time series data is collected at the time series process timing. When the times at the time of creation overlap, the data cannot be stored due to the processing delay, and the accuracy of the process data deteriorates.

The present invention in the time-series process data collection timing is provided with the actual time-series time file 7 in which the fixed period timer time is stored as the time which is the key of the process data collection. By providing a process 8 that is started when the series data is edited a predetermined number of times and processing these two processes under time-series conditions, the process data collection is stabilized. The details will be described with reference to FIG.

By the α time starting from the fixed cycle timer 11, each processing of n2 minutes and n3 minutes process data collection is started at the same time, and the processing proceeds to the time for n2 minutes 13 and the time for n3 minutes 14 of the actual time series time file. The timer time is stored and the process ends.

Next, α time n from the n1 minute data collection process
When the 1-minute data collection / editing completion start 15 is satisfied, two time-series conditions are satisfied, and the n2-minute data collection at time α is started.

The n2 minute data at the α time is edited at 10 points of the n1 minute data, but since there are n points (about 1,000 points) for the average value or integrated value of the process data, a considerable editing time is required. Requires. At this time, the n2 minute data collection / edit completion start 17 at α time does not end within the fixed cycle processing time,
Even when the start is α time + 2 minutes, the data accuracy can be maintained because the processing for collecting n3 minutes data at the α time is started at the α time stored in the timer.

Next, the processing procedure of one embodiment will be described with reference to FIGS.

FIG. 3 is a flow chart showing an embodiment of the processing procedure of the present invention, FIG. 4 shows the structure of the actual time series time file, and FIG. 5 shows the structure of the time series process data file. Is. The file linkage of FIGS. 4 and 5 will be described based on the flowchart of FIG.

The process event of the fixed period timer interrupt and the predetermined number of times of the edit completion interrupt is fetched (step 100),
It branches to each process according to the message added to the event (step 101). In the case of a fixed cycle timer interrupt, the time is stored in the time series time 22 of the corresponding data pitch 21 in the actual time series time file shown in FIG. 4 (step 102). This time is the year / month / day / hour added to the fixed-cycle timer interrupt, and the time-series process data storage position is determined at this time. Next, the edit completion flag 24 is determined a predetermined number of times in FIG. 4 (step 103), and when it is already received (ON), two conditions are satisfied, so the process proceeds to step 104. When it is off, the timer reception flag 23 is turned on (step 110), and the process ends.

In the case of a predetermined number of edit completion interrupts, the timer reception flag 23 of FIG. 4 is judged (step 111), and when already received (on), two conditions are satisfied,
Go to step 104. When it is off, the edit completion flag 24 is turned on a predetermined number of times (step 112), and the process is terminated.

By the timing when the two conditions are satisfied,
The time series data of the time range 32 of the data pitch 31 is read from the time series process data file shown in FIG. 4 (step 104). Next, the data loss 33 is determined within the time range 32 (step 105), and if all the data are lost, process loss data is excluded from the processing target (step 113). By performing this data loss specification, when the time process data is edited, the missing data whose data is not guaranteed is excluded from the processing target, so that the accuracy of the data can be maintained.

If there is at least one normal data in the time range 32, the process data at the time is edited (step 10).
6). The process data editing method is as follows.

N1 minute data: instantaneous process data from the digital communication controller.

N2-minute data: average value and integrated value of 10 points of n1-minute data.

N3 minute data: Average value and integrated value of 3 points of n2 minute data.

N4 minute data: The average value and integrated value of two n3 minute data points.

N5 minute data: Average value and integrated value of 8 points of n4 minute data.

N6 minute data: average value and integrated value of three points of n5 minute data.

The process data editing method is an editing method when all the process data in the time range is normal. If there is even one missing data, each score will change. When the process data editing is completed, the process data of the time is written by using the time series time 22 of the data pitch 21 in the actual time series time file shown in FIG. 4 as a key (step 107). Next, it is determined whether or not the process data at the time has been edited a predetermined number of times (step 108), and when the time overlaps, the next data pitch collection processing (if n2 minutes, n3 minutes data collection processing) is started (step 109). Then, the fact that the process data at the time has been edited a predetermined number of times is notified.

[0037]

According to the present invention, even when the time overlaps and the data collection processing time is abnormal as in the embodiment,
Not only is it possible to collect process data, suppress variations in data quality, and provide a stable process data collection device, but it is also possible to obtain more accurate performance data (time-series process data collection results) for other processes such as sub-processes. Supplying to equipment improves product quality and yield.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a processing configuration of a process data collection device that implements the present invention.

FIG. 2 is an explanatory diagram of a process data collecting device according to an embodiment.

FIG. 3 is a flowchart showing an embodiment of the processing procedure of the present invention.

FIG. 4 is an explanatory diagram of an actual time series time file.

FIG. 5 is an explanatory diagram of a time-series process data file.

[Explanation of symbols]

1 ... Plant equipment, 2 ... Digital communication control device, 3 ...
Digital communication controller data link processing, 4 ... Instant process data file, 5 ... Process data collection processing,
6 ... Process data file, 7 ... Actual time series time file.

Claims (2)

[Claims] 1. A process data collecting device for collecting data of an average value and an integrated value in time series on the basis of instantaneous process data input from a digital communication control device directly connected to a plant in a fixed cycle, and a data collection processing time. In order to maintain the data accuracy even when is abnormal, the actual time series time that stores the fixed cycle timer time as the key time of the process data collection is provided, and the timing when the predetermined number of times of the time series data is edited. The process data collecting device is characterized in that it is provided with a process to be activated by, and processes these two processes under time series conditions. 2. The process data collection method according to claim 1, wherein when process data collection is disabled for a certain period of time due to line abnormality and status of the digital communication control device, a data loss designation is added to the process data at that time. Process data collection device.