JPS63256816A - Plant data confirmation device - Google Patents

Abstract

PURPOSE:To accurately reproduce all input plant data by selecting a time series of physical quantities which can be reproduced by specific arithmetic among plant data, performing the specific arithmetic according to the data, and simulating desired physical quantity data. CONSTITUTION:A data selecting device 1 stores an auxiliary storage device 13 with only data 7-1-7-m selected under specific conditions among data 5-1-5-n outputted by a computer 12 for plant control, and (m) data 6-1-6-m selected under specific conditions among data 5-1-5-n are outputted to a simulation device 2. This device 2 processes (m) data as the physical quantity data selected by the device 1 by the specific arithmetic to simulate the desired physical quantity data, and (n-m) processed data 9 are outputted to a data reproducing device 14. Further, data which are stored in the device 13 and deleted to (m) are expanded in time series and inputted to the device 14 to accurately reproduce all input data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a plant data confirmation device that edits and reproduces plant data for controlling a plant.

(Prior Art) Fig. 3 is a block diagram illustrating the configuration of a conventional plant data confirmation device. It is output to the plant control computer 12 as input data 16.

The plant control computer 12 collects or processes input data 16 and stores data 17 in chronological order in the auxiliary storage device 13.

Reference numeral 14 denotes a data reproduction device comprising, for example, a printer, a trend graph, a plotter, etc., which reads out and reproduces the data 17 stored in chronological order in the auxiliary storage device 13 as read data 18.

Next, the operation will be explained.

Plant data 15 inputted via the input/output interface 11 is inputted to the plant control computer 12 as input data 16, and data 17 edited (collected or processed) by the plant control computer 12 is stored in the auxiliary storage device 13. be stored in chronological order. Data 17 stored in this auxiliary storage device 13 is read data 18
The data is outputted to the data reproducing device 14 as a drawing, and the data is outputted as a drawing by a printer, for example.

(Problems to be Solved by the Invention) Since the conventional plant data confirmation device is configured as described above, all the plant data 15 to be confirmed by the data reproduction device 14 is transmitted from the plant side via the input/output interface 11. As the number of plant data that must be input increases, the number of data indexed for time series data dependent on one plant data 15 that can be stored in the limited memory space in the auxiliary storage device 13 decreases,
Plant data that requires time-series consideration because long-term time-series plant data cannot be stored 15
There was a serious problem that made it impossible to memorize data with good reproducibility.

This invention was made in order to solve the above-mentioned problems, and it is possible to write into the auxiliary storage device plant data that can be reproduced by simulated calculation processing among the plant data stored in the auxiliary storage device. By limiting this, we can efficiently store plant data that requires time-series consideration within the limited storage capacity, and also create a plant data confirmation device that can accurately reproduce and confirm all input plant data. The purpose is to obtain.

[Means for solving problems]

The plant data confirmation device according to the present invention includes a data selection means for selecting reproducible time-series physical quantity data by a predetermined calculation from input plant data, and time-series physical quantity data selected by the data selection means. a data simulating means for simulating desired physical quantity data by performing a predetermined calculation based on the data; and a data simulating means for reading out the desired physical quantity data simulated by the data simulating means or the plant data stored in the plant data storage means. A data reproducing means for reproducing the data is provided.

[Effect]

The data selection means of the plant data confirmation device in this invention selects reproducible time-series physical quantity data by a predetermined calculation from input plant data, and selects the time-series physical quantity data selected by the data selection means. The data simulating means executes a predetermined calculation based on the data simulating means to simulate the desired physical quantity data, and the data reproducing means is the desired physical quantity data simulated by the data simulating means or the plant data stored in the plant data storage means. reads and reproduces it.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, l is a data selection device which constitutes data selection means of the present invention, and data 7-1 is selected under predetermined conditions from data 5-1 to 5-n output from the plant control computer 12. 1 to 7-m (m<n) are stored in the auxiliary storage device 13, and data 5-1 to 5-n outputted from the plant control computer 12 are selected under predetermined conditions, for example. The m1 pieces of data 6 are output to the simulation device 2, which serves as data simulation means of the present invention.

The simulation device 2 receives m1 pieces of data 6 which are physical quantity data selected and output by the data selection device 1.
A predetermined calculation (described later) is executed based on the data, and (n−m) pieces of data 9 calculated by simulating the desired physical quantity data are output to the data reproduction device 14.

The time-series data 8-1 to 8-■ stored in the auxiliary storage device 13 are directly read out and input to the data reproduction device 14.

Note that 3-1 to 3-n are data that are input from a plant (not shown), and 4-1 to 4-n are data that are output from the input/output interface 11 to the plant control computer 12.

Next, the operation will be explained.

The n pieces of data 4-1 to 4-n input from the plant via the input/output interface 11 are data 5-1 to 5.
-n from the plant control computer 12 to the data selection device 1.

Here, among the input data 5-1 to 5-n, only m pieces of preset data 7-1 to 7-I+ are selected and output to the auxiliary storage device 13 and stored in chronological order. Go. m pieces of data 7-1 to 7-m selected by the data selection device 1 and stored in the auxiliary storage device 13
are read out as data 8-1 to 81 and transferred to the data reproduction device 14.

On the other hand, m1 pieces (m,
<m) data 6 is input to the simulation device 2. In the simulation device 2, in order to simulate (n−m) pieces of data 9 that are not stored in the auxiliary storage device 13, m1 pieces (n−m) pieces of data 9 selected by the data selection device 1 are
A predetermined physical calculation is performed using the data 6 of m□<m) as initial value data, and the simulated data 9 is output to the data reproduction device 14. As a result, the data stored in the auxiliary storage device 13 by the simulation device 2 is
The number of time series data stored in the auxiliary storage device 13 can be substantially increased.

FIG. 2 is a block diagram explaining the operation of the simulation device 2 shown in FIG. 1, and Pa-Pc are valves 81 to B.
3, and this input pressure data Pa~
Pc is selected by the data selection device 1 and input to the simulation device 2 shown in FIG.

Xa to Xc are valve opening degree data, which are selected by the data selection device 1 and input to the simulation device 2 shown in FIG.

When these data are input to the simulation device 2, the simulation device 2 receives the flow rate data W1 to W3.
is simulated based on the following equations (1) and (2) and output to the data reproduction device 14. In addition, P in the figure.

indicates the pressure confluence point pressure, W, +W2+w, = 1.

Ya = f (Xa) Yb = f (Xb) Yc = f (Xc) ””
(1) However, Ya to Yc indicate dominance.

W,=Ya (Pa-Po) W2=Yb (Pb-P,') W3=Yc (Pc-Po)..."(2)
In the above embodiment, a case has been described in which the number of time-series data that can be stored in the auxiliary storage device 13 is substantially expanded by online simulated calculation processing. It is also possible to reproduce the behavior of the plant offline from the system based on data stored on magnetic tape or the like.

〔Effect of the invention〕

As described above, according to the present invention, data selection means selects time-series physical quantity data that can be reproduced by a predetermined calculation from input plant data, and time-series physical quantity data selected by the data selection means. a data simulating means for simulating desired physical quantity data by executing a predetermined calculation based on the data, and reading out the desired physical quantity data simulated by the data simulating means or the plant data stored in the plant data storage means. Since we have provided a data reproduction means to reproduce the data, it is possible to free up the limited storage capacity for plant data that must be stored as time series data. Since time-series data related to plant data can be collected intensively, the number of sampling points for measuring plant data can be significantly reduced, and data from locations that are difficult to measure can be collected based on large amounts of stored time-series data. It has an excellent effect of allowing accurate analogy.

[Brief explanation of drawings]

FIG. 1 is a block diagram explaining the configuration of the plant data confirmation device of the present invention, FIG. 2 is a block diagram explaining the operation of the simulation device shown in FIG. 1, and FIG. 3 is a block diagram of the conventional plant data confirmation device. FIG. 2 is a block diagram illustrating the configuration. In the figure, 1 is a data selection device, 2 is a simulation device, and 11 is an input/output interface. 12 is a plant control computer, 13 is an auxiliary storage device, 1
4 is a data reproduction device. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. P-1 died in l.

Claims (1)

[Claims] In a plant data confirmation device having a plant data storage means for editing input plant data and storing it in chronological order, time-series physical quantity data that can be reproduced by a predetermined calculation is selected from the input plant data. a data selection means; a data simulation means for simulating desired physical quantity data by performing a predetermined calculation based on the time-series physical quantity data selected by the data selection means; and a data simulation means for simulating desired physical quantity data; 1. A plant data confirmation device comprising: data reproduction means for reading out and reproducing the physical quantity data stored in the plant data storage means or the plant data stored in the plant data storage means.