JP2000163259A - Simulator and control logic construction tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce human errors and to shorten the time needed for construction when the control logic program of a plant simulator is constructed. SOLUTION: In this simulator and control logic construction tool for a plant simulator device which constructs a control logic program for a plant simulator based on the control logic diagram of a real machine by combining symbolized logic operators on the screen of a computer, a symbolized logic operator to be shown on a logic operator selection window 7 is made substantially the same as the symbol of a logic operator used in a control logic diagram of the real machine. The tool is provided with an input-output setting means which performs the setting of data transfer between the sheets of a control logic program constructed while being divided into plural pictures (sheet) by setting a sheet number and a terminal number offered by the control logic diagram of the real machine to the input terminal and the output terminal of the control logic program.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a construction support tool suitable for reducing a program construction time in a plant such as a boiler, and particularly in a simulator device thereof.

[0002]

2. Description of the Related Art A conventional technique will be described with reference to FIGS. FIG. 13 shows a result of logic development from a control logic diagram of an actual plant to a conventional construction tool. FIG. 14 is a comparison table showing a control logic diagram of an actual plant and a symbol figure of a logical operator of a conventional construction tool. FIG. 15 shows an input terminal setting window. FIG. 16 shows a control logic diagram used in an actual plant.

[0003] The simulator device of the boiler plant is
Usually, a digital display is arranged in the upper part, a color monitor screen is arranged in the middle part, and a computer is arranged inside. These simulator devices enable a plant operator to perform training from start-up to shutdown of the plant and measures to be taken in the event of a plant accident emergency.

On this simulator device, a tool used to enable plant-specific control is a control logic construction tool. Here, the plant-specific control includes opening and closing a valve, starting and stopping a fan, and the like.

The conventional construction tool shown in FIG. 13 is arranged at the bottom of the screen, and has a logical product 83, a logical sum 84, a connection element (input) (hereinafter referred to as an input terminal) 85, and a connection element (output).
A logic operator selection window 87 in which words indicating a logic operator such as 86 (hereinafter referred to as an output terminal) are displayed, and a logic operator arranged in the center of the screen and symbolized and arranged in combination with a control logic program And an input screen 88 on which is constructed.

[0006] The programmer uses the above-mentioned construction tool to form a control plant based on a control logic diagram of an actual plant composed of input / output signals, logical operator circuits and the like shown in FIG.
A logical operator is selected from the logical operator selection window 87 with a mouse and arranged on the input screen 88.

Further, by selecting between the arranged logical operators with a mouse, a connection is made so that numerical values can be exchanged. The above procedure is repeated, and the control logic diagram of the actual machine is developed on the input screen of the construction tool.

The logical operator symbol graphic used in the control logic diagram of the actual plant and the logical operator symbol graphic 91 of the construction tool are not the same as shown in FIG. Therefore, when developing the logic of the control logic diagram of the actual machine into the input screen of the construction tool, the programmer determines which of the logical operator symbol shapes of the construction tool Must be considered, and replaced with the corresponding logical operator symbol graphic 91 and arranged on the input screen.

When arranging the input terminal 85 and the output terminal 86 of the logical operator selection window 87, a numerical value can be transferred between control logic programs.
It was necessary to set a variable name in the program variable item 93 of the terminal setting window 92 shown in FIG.

For this reason, it has been difficult to manually perform a logic check on whether or not the control logic diagram of the actual machine matches the control logic program constructed by the conventional construction tool.

In order to realize the normal operation of the control on the simulator device, the consistency of the input / output terminals between the control logic programs is determined by the program variable name set in the terminal setting window 92. A check was performed by a human, matching each control logic program.

Further, as a means for confirming the simulation results of the control logic program constructed through manual operations on a screen, it is necessary for a programmer to construct a trend graph display program for displaying terminal calculation results in a programming language. there were. Further, there is no means for confirming the consistency within the control logic program.

[0013]

The above prior art has the following problems.

(1) A means for constructing a control logic program is based on a control logic diagram of an actual machine, and a symbol figure of a logical operator used in the control logic diagram of the actual machine and a logical operation used on a construction tool. Since the child symbol figures are not similar, it is necessary for the programmer to develop and replace the symbol figures while looking at the control logic diagram of the actual machine and translating it in the mind. At that time,
A program-specific program variable name had to be set to the input / output terminals of the logical operator. In particular, the control logic diagram of the actual machine to be constructed is, for example, about 3,000 sheets of A3 size per plant in the case of a boiler plant. A large amount of time of about 8000 hours is spent.

(2) The control logic program is constructed by being divided into a plurality of screens (sheets), and it is manually checked whether the transfer of input / output terminals between the constructed control logic programs is correct. Therefore, human error often occurs.

(3) The simulation result of the constructed control logic program is confirmed. In the trend graph display program, the control logic program in the output result is checked.
The consistency inside the program cannot be clearly confirmed.

An object of the present invention is to reduce human errors and reduce the time required for constructing a control logic program.

[0018]

In order to achieve the above object, according to the present invention, a symbol figure of a logical operator used in a construction tool is made similar to a symbol figure of a logical operator used in a control logic diagram of a real machine. .

The data transfer between the control logic programs is set by setting the sheet number and the terminal number provided in the control logic diagram of the actual machine to the input terminal and the output terminal of the control logic program. An input / output setting means is provided.

Further, a database means for converting the constructed control logic program into a database, and a check for mechanically checking the data of the sheet number and the terminal number set for the input terminal and the output terminal by the database. Means were provided.

Further, as a method for clarifying the consistency inside the control logic, a monitoring means for monitoring the inside of the control logic is provided, and the condition of each logical operator inside the control logic by an input signal is satisfied or not satisfied. Is provided, and a color-coded display means for coloring the control logic program on the screen of the simulation device according to the detection result is provided. This makes it possible to visually observe the simulation result, and the determination of the simulation result is facilitated.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows the result of logic development from the control logic diagram of the actual machine shown in FIG. 16 by the construction tool of the present invention. FIG. 2 shows the symbol figure of the logical operator of the control logic diagram of the actual machine and the symbol figure of the logical operator of the construction tool of the present invention in comparison. FIG. 3 shows an input / output terminal setting window. 4 to 8 show the configuration of the database. FIG. 9 is a flowchart showing a process of checking input / output terminal connection between the control logic and the program. FIG. 10 is a flowchart showing the monitoring processing of the control logic program.
FIG. 11 shows a monitoring example. FIG. 12 shows a boiler plant simulator apparatus to which the present invention is applied. The simulator apparatus has a digital display 80 in the upper part, a color monitor screen 81 in the middle part, and a computer 82 in the inside.

Here, terms used in this embodiment are defined. The connection icon 1 is used for joining logical operators. The compare icon 2 is used to check the input / output terminal arrangement between the control logic programs. Further, input / output terminals 6
Is used to connect a plurality of control logic programs so that numerical values can be exchanged.

Hereinafter, the configuration of the construction tool according to the present invention, the logical operator symbol figure used in the construction tool,
A method for setting the input / output terminals will be described.

The screen of the construction tool of the present invention shown in FIG.
Logical operators displaying the connection icons 1, compare icons 2, monitoring icons 3 arranged at the top of the screen, and symbolic figures such as logical product 4, logical sum 5, and input / output terminal 6 arranged at the right side of the screen It comprises a selection window 7 and an input screen 8 on which a control logic program is constructed by arranging and combining symbolically arranged logical operators arranged in the center. The color monitor screen 81
Then, a logical operator selection window 7 and an input screen 8 are displayed. The construction tool of the present invention is provided in the computer 82.

The programmer constructs a control logic program in the simulator device based on the control logic diagram of the actual plant using the construction tool. Also,
The procedure for constructing the control logic program is performed in the same manner as that described in the related art.

The feature of this embodiment is that, as shown in FIG. 2, the symbol graphic 20 of the logical operator displayed in the control logic diagram of the actual machine and the symbol graphic 21 of the logical operator used in this construction tool are similar. I have done it. Further, the construction tool according to the present embodiment sets the data transfer between the sheets of the control logic program divided into a plurality of screens (sheets) by using the input terminal and the output terminal of the control logic program. Input / output setting means for setting the sheet number and terminal number provided in the control logic diagram of the actual machine, and input / output between each sheet of the control logic program which is divided into a plurality of screens (sheets) A database means for automatically creating a database of terminal settings;
Checking means for checking whether the input / output terminal settings between the respective sheets of the control logic program are consistent with each other based on the database, monitoring means for monitoring the configured control logic program, and monitoring Color-coded display means for displaying the result in the color of the connection between the logical operators displayed on the screen.

A terminal setting window 30 for input / output terminals shown in FIG. 3, that is, an input / output setting means includes a connector type setting 36 disposed at the upper part, a connection division setting 37 disposed at the lower left side, and a lower right part at the same time. Placed input / output settings 31
And the sheet No. arranged below the connection category setting 37.
Setting 32 and sheet No. The connection No. arranged below the setting 32 And a setting 33.

The programmer designates the symbol of the terminal for which the connection relation is to be set on the input screen with a mouse, and is provided in the control logic diagram of the actual machine (see FIG. 16).
o. 34 (BA-05) and connection no. (Terminal number) 3
5 (12) is the sheet No. of the input / output terminal setting window 30. Setting 32 and connection No. Enter each in the setting 33. The setting is performed for each input / output terminal by such a method.

As described above, the symbol figure of the logical operator in the control block diagram of the actual machine is made similar to the symbol figure of the logical operator in the construction tool, and the sheet No. provided in the control logic diagram of the actual machine is used. 34 and connection No. 34. By setting 35 as the input / output terminal of the construction tool, a logic check by matching both is facilitated. Further, the time required for construction can be reduced. It is desirable that the symbol figure of the logical operator in the control block diagram of the actual machine and the symbol figure of the logical operator in this construction tool be completely the same, but at least the programmer using this construction tool must It is necessary to make them similar so that the translation operation of the symbol figure is not required.

Hereinafter, the sheet No. set to the input / output terminal by the check means will be described with reference to FIGS. And connection N
o. An example of the mechanical check method will be described. FIG. 4 shows the overall configuration of the database. As an example of the constructed control logic program, FIG. 5 shows control logic programs 64 (sheet number 1) and 65 (sheet number 2), and FIG. 6 shows a database corresponding to the control logic programs 64 and 65. That is,
Connection data 50 linked in the unique number column 40
FIG. 7 shows input / output terminal data 51, and FIG. 8 shows connection data 52.

First, the configuration of the database related to the control logic program will be described. The database has connection data 5 linked by a unique number column 40.
0, input / output terminal data 51, and connection data 52. These databases are formed in the memory of the computer 82 by the database means with the construction of the control logic program on the input screen by the programmer.

The connection data 50 is a column 40 of unique numbers.
And a symbol name column 41 and a connection unique number column 53
And a column 44 of output values. I / O terminal data 5
Reference numeral 1 denotes a unique number column 40, a control logic sheet number column 45, an input terminal setting sheet number column 46 and a terminal number column 47, and an output terminal setting terminal number column 48.
It consists of. Further, the connection data 52 includes a unique number column 40 and coordinate data 49 (X0, Y0,... X
5, Y5).

Hereinafter, terms used in the database will be defined. First, column 4 of the unique number of the input / output terminal data 51
0 stores a 6-digit number automatically assigned to each logical operator symbolized by the computer. Next, the control logic sheet number column 45 of the input / output terminal data 51 stores a control logic program sheet number (corresponding to the sheet number, hereinafter the same) 60. Further, a sheet number column 46 and a terminal number column 47 of the input terminal setting store the sheet number 61 and the terminal number 62 set as the input terminals of the control logic program. Subsequently, the terminal number column 48 of the output terminal setting stores the terminal number 63 set as the output terminal of the control logic program.

Next, the unique number column 40 of the connection data 50 contains a 6-digit number (unique number of the input / output terminal data 51) automatically assigned to each logical operator symbolized by the computer. Store. In the symbol name column 41, for each of the six-digit numbers automatically assigned, the logical operators symbolized are replaced with character strings and stored. For example, the logical product is AN
D and the input terminal are represented by IN. The number A column 42 to the number N column 43 of the connection unique number 53 store the unique numbers of other logical operators connected from the logical operator indicated by the unique number. The output value column 44 stores an output result obtained by performing a logical operation on the input value of the logical operator shown in the symbol name column 41.

The coordinate data 49 of the connection data 52
(X0, Y0,..., X5, Y5) are the connection coordinates between the logical operators (the horizontal lower left is set to 0, the horizontal 1280 × vertical 102).
4 dot coordinates).

Hereinafter, the checking of the input / output terminals between the control logic programs executed by the checking means will be described with reference to the procedure of FIG. First, in order to check the sheet number and the terminal number set for the input / output terminals, the compare icon 2 is selected with a mouse, and thereafter, steps 100 to 108 are executed.

First, the unique number 40 of the connection data 50
The maximum value of the unique number is obtained from (FIG. 3). Then, the minimum value of the unique number is substituted into the counter (steps 100 and 101).

Next, the setting data of the output terminal (OUT) is compared with the setting data of the input terminal (IN) as a reference.

Therefore, in the connection data 50, the column 4 of the symbol name corresponding to the unique number stored in the counter
The input terminal (IN) of the cell unit 54 is obtained from 1 (step 102).

Here, the input terminal (I) is stored in the column 41 of the symbol name corresponding to the unique number stored in the counter.
If N) does not exist, the counter is counted up (+1) to the next unique number (step 107).

Subsequently, the cell part 55 of the column 40 of the unique number is obtained from the cell part 54, and from the linked unique number (5), the input / output terminal data 51 is used to obtain the input terminal setting sheet number from the column 46 of the sheet number. The data (terminal number 1) of the cell unit 57 is obtained from the column 47 of the data (sheet number 1) of the cell unit 56 and the terminal number.

Then, based on the obtained data, the control logic sheet number column 45 and the output terminal terminal number column 48 are compared and checked from the head of the unique number (steps 103 and 104). That is, a combination of the control logic sheet number 1 and the output terminal number 1 is searched.

Here, if the corresponding combination of the sheet number and the terminal number does not exist, it is written into a file as an error log. (Step 106).

Next, when there is a combination of the corresponding sheet number and terminal number, the data (uniqueness) of the cell portion 58 corresponding to the corresponding sheet number and terminal number is obtained from the unique number column 40 of the input / output terminal data 51. Number 3) is acquired, and as the completion of the connection check, the unique number (3) of the cell unit 58 obtained above is written in the column A column 42 of the connection unique number of the connection data 50 in the cell unit 59 (step 105). .

Finally, the counter is counted up (+1).
Then, the maximum value of the unique number acquired in step 100 is compared with the numerical value of the counted up counter. If the numerical value of the counter is not the maximum value, the above-described processing is performed on the next unique number, that is, the numerical value of the counter. This is repeated (steps 107 and 108). If the value of the counter is equal to the maximum value of the unique number, the process ends.

According to the above description, the connection check at the input / output terminals between the control logics is repeatedly performed by a mechanical and automatic processing method. Since no human intervention is involved in this process, no human error occurs.

One embodiment of the monitoring processing of the control logic program performed by the monitoring means will be described below with reference to FIGS. 4 to 8, FIG. 10, and FIG.

First, in order to perform the monitoring process, a sheet of the control logic program is selected, and by selecting the monitoring icon 3 with a mouse, the monitoring means and the color-coded display means are activated. Step 211 is executed. Here, it is assumed that the person who performs the monitoring process selects the control logic program 65 shown in FIG.

First, the assigned unique number is obtained from the logical operator of the selected control logic program.

Next, the minimum value and the maximum value of the unique numbers obtained above are obtained, and the minimum value (initial value) of the unique number is substituted for the counter (steps 201 and 20).
2).

Subsequently, the unique number column 40 of the linked connection data 52 is compared with the cell part 55 of the unique number assigned to the counter in the connection data 50. Then, each data of the cell parts 70, 71, 72, 73,... Of the coordinate data 49 of the matching unique number is obtained (step 203).

Also, from the matched unique number, the data (output value) of the cell portion 74 of the output value column 44 corresponding to the cell portion 55 from the unique number column 40 is obtained from the linked connection data 50. (Step 204).

Next, when the obtained output value is 1, the color-coded display means colors the connection in red based on the coordinate data obtained in step 203. If the output value is 0, the connection is colored black (steps 206 and 207).

Finally, the value of the counter is counted up (+1), and a comparison check is made with the maximum value of the unique number obtained in step 201.

If the value of the counter is the maximum value, the minimum unique number acquired in step 201 is substituted for the counter (steps 208, 209 and 21).
0). You are now ready to repeat the monitoring process.

The processing described above is repeated in the order of the acquired unique numbers. Monitoring icon 3
Is selected again with the mouse, the monitoring is canceled and the monitoring means and the color-coded display means end the operation (step 211).

As a result, as shown in FIG. 11, the connection on the control logic program is changed in color, so that the part where the logical expression is established or not can be visually judged at a glance. Therefore, it is possible to clearly confirm the consistency inside the control logic.

[0059]

According to the present invention, (1) when constructing a control logic program of a simulator device in a plant, a symbol figure of a logical operator in a control logic diagram of a real machine and a symbol figure of a logical operator of a construction tool Are similar and the control logic can be constructed without setting a specialized program element, so that the logic check of both the control logic diagram of the actual machine and the constructed control logic program becomes easy. ) Since no human intervention is required for checking the input / output signals between the constructed control logics, human errors and construction time can be reduced. (3) When confirming the simulation results,
Lines connecting the constructed control logics can be displayed in different colors on the construction tool depending on the presence or absence of an input signal, so the consistency inside the control logic can be visually and clearly confirmed on the screen. There is an effect that it is possible.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an example of a result of logic development from a control logic diagram of an actual machine by a construction tool of the present invention.

FIG. 2 is an explanatory diagram showing a comparison between a symbol figure of a logical operator of a control logic diagram of an actual machine and a symbol figure of a logical operator of the construction tool.

FIG. 3 is an explanatory diagram showing an example of an input / output terminal setting window in the construction tool of the present invention.

FIG. 4 is an explanatory diagram showing a configuration example of a database according to the embodiment of the present invention.

FIG. 5 is a diagram showing details of a portion shown in FIG. 4;

FIG. 6 is a diagram showing details of a portion of FIG. 4;

FIG. 7 is a diagram showing details of a portion of FIG. 4;

FIG. 8 is a diagram showing details of a portion of FIG. 4;

FIG. 9 is a flowchart illustrating an example of an input / output terminal connection check process between a control logic and a program in the embodiment of the present invention.

FIG. 10 is a flowchart illustrating monitoring processing of a control logic program according to the embodiment of the present invention.

FIG. 11 is an explanatory diagram showing a display example of a monitoring result in the embodiment of the present invention.

FIG. 12 is a diagram showing an example of a simulator device of a boiler plant to which the present invention is applied.

FIG. 13 is an explanatory diagram showing a result of logic development from a control logic diagram of an actual machine to a conventional construction tool.

FIG. 14 is an explanatory diagram showing a control logic diagram of an actual machine in comparison with a symbol figure of a logical operator of a conventional construction tool.

FIG. 15 is a diagram showing an example of a setting window for setting a connection relation of input terminals in a conventional construction tool.

FIG. 16 shows an example of a control logic diagram used in an actual plant.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connection icon 2 Compile icon 3 Monitoring icon 4,83 Logical product 5,84 Logical sum 6 I / O terminal 7 Logical operator selection window 8,88 Input screen 20,21 Symbol figure 30 Terminal setting window 31 I / O setting 32 Sheet number setting 33 Terminal number setting 34 Sheet number 35 Terminal number 40 Unique number column 41 Symbol name column 42 Connection unique number A column 43 Connection unique number N column 44 Output value column 45 Control logic sheet number column 46 Input terminal setting sheet number column 47 Input terminal setting terminal number column 48 Output terminal setting terminal number column 49 Coordinate data 50 Connection data 51 Input / output terminal data 52 Connection data 53 Connection unique number column 54, 55, 56, 57, 58, 59 Cell part 60, 61 Sea G No. 62, 63 Terminal No. 64, 65 Control logic program 65 Control logic program 70, 71, 72, 73 Cell section 80 Digital display 81 Color monitor screen 82 Calculator 85 Input terminal 86 Output terminal 87 Logical operator selection window 91 Symbol figure 92 Terminal setting window 93 Program variable item

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[Procedure amendment]

[Submission date] December 3, 1998 (1998.12.
3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

[Title of the Invention] Simulator / control logic construction tool

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

The present invention relates to a construction support tool suitable for reducing a program construction time in a plant such as a boiler, particularly in a simulator thereof.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Kato 5-3 Takaracho, Kure-shi, Hiroshima Fab term in Bab Hitachi Engineering Co., Ltd. (Reference) 3L021 CA10 EA04 5B049 BB07 BB21 CC21 DD01 EE01 EE05 EE41 EE43 FF03 FF04 5B076 DC09 DE05 DF09 5H220 BB20 CC08 CX01 DD06 EE08 GG14 JJ07 JJ12 JJ13 JJ24 JJ48 JJ53 LL06

Claims (4)

[Claims] 1. A combination of a logical operator selection window displaying a symbolized logical operator constituting a control logic program and a symbolized logical operator displayed in the logical operator selection window. A control logic program for a plant simulator is constructed on a computer screen based on a control logic diagram of a real machine. In the control logic construction tool, the symbol of the logical operator displayed in the logical operator selection window is substantially the same as the symbol of the logical operator used in the control logic diagram of the actual device. Simulator / control logic construction tool. 2. The simulator / control logic construction tool according to claim 1, wherein the setting of data transfer between sheets of the control logic program divided into a plurality of screens (sheets) is performed by the control logic and the control logic program. A simulator / control logic construction tool, wherein input / output setting means for setting a sheet number and a terminal number provided in a control logic diagram of an actual machine to input terminals and output terminals of a program is provided. 3. A combination of a logical operator selection window displaying symbolized logical operators constituting a control logic program and a symbolized logical operator displayed in the logical operator selection window. A control logic program for a plant simulator is constructed on a computer screen based on a control logic diagram of a real machine. In the control logic construction tool, the control logic is divided into multiple screens (sheets).
A database means for automatically creating a database of input / output terminal settings between sheets of a program, and a check for checking whether input / output terminal settings between sheets of a control logic program are consistent based on the database. Means for constructing a simulator / control logic. 4. The simulator / control logic construction tool according to claim 3, wherein a monitoring means for performing a monitoring process of the configured control logic program, and a logical operator for displaying a monitoring result by the monitoring means on a screen. Means for displaying the colors of the connections between them, and a simulator / control logic construction tool.