WO2017038342A1

WO2017038342A1 - Control management system and control method

Info

Publication number: WO2017038342A1
Application number: PCT/JP2016/072576
Authority: WO
Inventors: 岡本　浩次郎; 清水　勝人; 鈴木　洋之
Original assignee: 株式会社日立製作所
Priority date: 2015-09-02
Filing date: 2016-08-02
Publication date: 2017-03-09
Also published as: JP2017049822A; JP6552343B2

Abstract

Provided is a control management system which manages control of devices to be controlled, said control management system comprising: an information system which connects inputs and outputs of a plurality of programs which is associated with the control of the devices to be controlled, and, on the basis of the connection configurations of the plurality of programs, determines an execution sequence of processes by the plurality of programs; and a control system which controls the devices to be controlled on the basis of the results of the processes by the plurality of programs.

Description

Control management system and control method

The present invention relates to a technology for controlling a target device such as a plant, and more particularly to a technology for controlling the target device by a process constituted by a plurality of programs.

An information system and a control system corresponding to various businesses have been developed and implemented. In recent years, there are processes in which a process for generating an input signal to a target device in a control system is configured by a plurality of programs. High added value by focusing on the structure of the target device, information system, or control system, improving the processing of the information system or control system, or improving the processing by linking multiple information systems and control systems Attempts have been made to improve the efficiency of services and operations.

In Patent Document 1, in a configuration in which a certain system uses output data of another system, the use of data even if the system structure of the system to which the data is used becomes complicated or changes dynamically. A method that makes it possible to easily grasp the situation and the usage destination is disclosed.

JP 2008-257397 A

For example, in the process control of an industrial plant, the process of generating an output signal to the target device is complicated. In general, various analog signals and digital signals are used as inputs in industrial plants. Various devices such as valves, heaters, fans, and motors are controlled. It is necessary to give various control signals such as a start signal, a stop signal, and an adjustment amount command value to the devices to be controlled at appropriate timing.

The process of generating various control signals from various input signals is also complicated. The control signal is generated through a complicated calculation by a multi-level program using a plurality of input signal values. In particular, in the process control of a large industrial plant, an input signal given to generate a control signal and an executed program are enormous, and the amount of calculation processing is enormous. Therefore, in order to execute appropriate control for the target device, it is necessary to create a complicated execution order for appropriately arranging a huge number of programs.

An object of the present invention is to provide a technology that makes it possible to easily realize appropriate control of a target device.

A control management system according to an embodiment of the present invention is a control management system that manages control of a target device, wherein inputs and outputs of a plurality of programs related to control of the target device are connected, and the plurality And an information system that determines the execution order of the processing by the plurality of programs based on the connection form of the programs, and a control system that controls the target device based on the processing results by the plurality of programs.

According to the present invention, it is possible to reduce the complicated work of determining the execution order of the processing of a large number of programs in the realization of a system that executes appropriate processing for a target device in which a large number of programs are related to control. .

It is a block diagram which shows the whole system of the plant control by this embodiment. It is a figure which shows an example of the connection structure of the some program in this embodiment. It is a flowchart which shows the process by an information system. It is a block diagram which shows the other structural example of an information system and a control system. It is a figure which shows the other example of the connection structure of the some program in this embodiment.

FIG. 1 is a block diagram showing an overall plant control system according to this embodiment. The configuration of the entire system shown in FIG. 1 is an example. The overall system includes a plant device group 101 that is a plurality of devices that constitute a plant and is a control target, a control system 103 that is connected to the plant device group 101 via a communication path 102, and a communication line 105 connected to the control system 103. An information system 104 connected via is included.

The plant equipment group 101 includes control valves, contacts, motors, and the like. The communication path 102 includes a communication line such as a network or a hard-wired direct connection line. The control system 103 transmits various information including a control signal for controlling the plant equipment group 101 via the communication path 102, and includes various information including a monitoring signal for notifying the acquired monitoring result in the plant equipment group 101. Receive. The control system 103 transmits information such as a monitoring signal to the information system 104 via the communication line 105 and receives information such as a control signal from the information system 104 via the communication line 105.

In this embodiment, the information notified from the information system 104 to the control system 103 includes a plurality of pieces of information notified from the control system 103 to the information system 104 including the monitoring result mounted on the monitoring signal from the plant equipment group 101. This is information calculated by the information system 104 through arithmetic processing using a plurality of programs.

In the information system 104, there are at least two or more stages of input / output relationships between programs in which an output of a program becomes an input of another program, and a plurality of programs are classified into a plurality of layers.

Hereinafter, an overview of processing of the entire system of the present embodiment will be described.

In the present embodiment, the plant equipment group 101 is a control target equipment.

The information system 104 connects the input and output of a plurality of programs related to the control of the plant equipment group 101, and determines the execution order of the processing by the plurality of programs based on the connection form of the plurality of programs. The control system 103 controls the plant equipment group 101 based on the processing results of a plurality of programs. As a result, for example, in an industrial plant, a complicated operation for determining the execution order of the processing of a large number of programs in the realization of a computer system that executes appropriate processing on a target device that is related to the control of the large number of programs. Can be reduced.

The information system 104 determines the execution order so that the processing of the program upstream of the connection form of the plurality of programs is executed before the processing of the downstream program. As a result, as information used for processing of a certain program, normal information can be generated when the processing of the program is executed.

Further, the control system 103 may update an input signal to the plant equipment group 101 at a predetermined control cycle. The information system 104 uses the processing result of the upstream program executed at one execution timing according to the control cycle as an input when executing the downstream program at the same execution timing. The combination is extracted, and the execution order is determined so that the downstream program is executed after the upstream program. Thus, the execution order can be determined so that the control system 103 that updates the control signal at a predetermined control cycle can execute appropriate control.

Also, the information system 104 connects a plurality of programs in a connection form with a plurality of layers so that an input of a program included in a certain layer becomes an output of a program included in a layer preceding the layer. When the connection form is changed, the information system 104 outputs the output of another program (second program) included in a hierarchy that is the same as or lower than that of a certain program (first program) included in a certain hierarchy. A combination of the first program and the second program to be used as input is extracted, and the second program is moved to a hierarchy preceding the hierarchy including the first program. According to this, when the control process is changed so as to affect the connection form, it is possible to appropriately rearrange the execution order of the plurality of programs according to the change.

Further, when the information system 104 moves the second program to a layer preceding the layer including the first program, the information system 104 receives the output of another program of the same or subsequent layer as the input. When it is to be used, a new layer is added between the layer including the first program and the layer including the second program, and the second program is further moved to the added layer. . According to this, when the program execution order cannot be appropriately determined only by moving the program between the hierarchies without changing the number of levels of the hierarchies, the new hierarchies are added to the second hierarchies. Since the program is moved, the execution order can be appropriately determined even when the execution order of the program cannot be appropriately determined without changing the number of stages in the hierarchy.

In the information system 104, the first program and the second program are included in the same hierarchy (first hierarchy), and the second program is located in a hierarchy immediately preceding the first hierarchy (second hierarchy). When the output of the program included in the (hierarchy) is used as an input, a third hierarchy is added between the first hierarchy and the second hierarchy, and the second program is moved to the third hierarchy. According to this, the first program and the second program are included in the same first hierarchy, and the second program is output from the second hierarchy that is one level before the first hierarchy. Can be easily added and the program can be moved when the condition of using as an input is satisfied.

The information system 104 extracts a program that outputs a control signal to the plant equipment group 101 and extracts a program that outputs an input to the extracted program, and does not require the output of another program as an input. The connection form is determined by repeating the process until it reaches. As a result, the connection form of the program is determined by tracing back to the program that does not require the output of the program retroactively from the necessary input to the plant equipment group 101, so that the appropriate connection form of the program can be determined efficiently. .

In addition, the information system 104 extracts a loop configured by connecting outputs and inputs between a plurality of programs, presents the plurality of programs forming the loop to the user, and executes them in any order. Prompt for the setting. According to this, even when there is a combination of a plurality of programs in which a loop is formed and which is appropriate to be executed first is not determined from the connection form, an appropriate execution order can be easily determined. For example, the information system 104 extracts a loop in which two programs out of a plurality of programs receive outputs from each other, presents the two programs forming the loop to the user, and executes which one first. Prompt the user for these settings.

At that time, when there is a program whose hierarchy has been changed twice, the information system 104 extracts a loop including the program. According to this, the presence of a loop can be easily detected based on the number of hierarchy changes, and the loop can be extracted.

Also, the information system 104 generates an executable file by compiling and linking with a plurality of programs as source programs. According to this, since the execution file is generated and executed, the control of the plant equipment group 101 by the computer can be easily realized.

Hereinafter, the processing in the present embodiment will be described in more detail.

FIG. 2 is a diagram illustrating an example of a connection configuration of a plurality of programs in the present embodiment. In FIG. 2, the left side is upstream and the right side is downstream. Multiple programs are classified into multiple hierarchies. For the most part, the output of the upstream layer program is connected to the input of the downstream layer program.

Here, a series of programs necessary for calculating an output from the information system 104 to the control system 103 is referred to as a path. Let N be the number of hierarchies of the path having the maximum number of hierarchies among all path groups. A plurality of programs necessary for calculating all outputs from the information system 104 to the control system 103 are classified into N layers.

The information system 104 classifies programs that output input signals to the control system 103 into the Nth layer. In addition, the information system 104 calculates an input signal to the Nth layer program used by the Nth layer program to calculate an input signal to the control system 103, and outputs a program group (Nth). -1) Classify into hierarchies. Hereinafter, the information system 104 classifies each program from the first layer to the Nth layer using the same procedure. Here, the number of programs belonging to the nth layer (1 ≦ n ≦ N) is Mn. At that time, the information system 104 arbitrarily assigns a serial number to each program in the nth layer. A number (n−p) is assigned to the p-th program in the n-th layer. p is 1 ≦ p ≦ Mn.

Next, the information system 104 executes processing for the program of each layer.

First, the information system 104 confirms to which hierarchy the program creating each input of each program of the (N-1) th hierarchy belongs. If an input signal of a program belonging to the (N-1) th layer is output from a program belonging to the (N-1) th layer or higher, the program outputting the input signal is referred to as the (N-2) th layer. Change to At this time, the information system 104 records the identification information of the program that has changed the hierarchy and the number of changes. The information system 104 performs this process for all programs belonging to the (N-1) th layer. In the case of the (N−1) th layer, the processing is executed for M (N−1) programs.

The information system 104 repeats the processing for the programs of each layer in descending order up to the first layer.

In the example of FIG. 2, the output of the program assigned the number ((N-2) -2) in the (N-2) th layer is in the same (N-2) th layer (( This is the input of the program assigned the number N-2) -1). Therefore, in FIG. 2, as indicated by the broken line arrow, the program assigned the number ((N-2) -2) is changed to belong to the (N-3) th layer.

The information system 104 executes the above-described processing for the program of each hierarchy, and when changing the hierarchy to which the program belongs, determines whether or not the hierarchy to which the program belongs has been changed twice or more. That the hierarchy of a program is changed twice means that at least two programs including the program form a loop. The loop is a state in which the output of the first program is the input of the second program and the output of the second program is the input of the first program.

If a loop is formed in this way, it cannot be determined from the connection form which of the programs forming the loop should be executed first. Therefore, in this embodiment, the user who performs the compilation is prompted to select manually. The information system 104 executes the programs in the order specified by the user.

FIG. 3 is a flowchart showing processing by the information system.

The information system 104 first starts processing with n = N−1 and p = 1 (step S101). The information system 104 determines whether n <1 (step S102). If n <1, the information system 104 ends the process.

If not n <1, the information system 104 determines whether or not p> Mn (step S103). If n> Mn, the information system 104 sets n = n−1 and p = 1 (step S110), and proceeds to step S102.

If p> Mn is not satisfied, the information system 104 next checks the hierarchy of the program that outputs each input signal of the program to which the number (np) is assigned (step S104). Next, the information system 104 determines whether or not there is a program whose hierarchy is higher than or equal to n among the programs confirmed in step S104 (step S105). If there is no program satisfying hierarchy ≧ n in step S105, the information system 104 sets p = p + 1 (step S109) and returns to step S103.

If there is a program whose hierarchy is higher than or equal to n in step S105, the information system 104 determines whether or not the hierarchy of the program has been changed in the past (step S106). If the hierarchy has already been changed in step S106, the information system 104 prompts the user to select in which order the programs forming the loop are to be executed (step S107), and step S109. Proceed to If the hierarchy has not been changed in step S106, the information system 104 changes the hierarchy of the program to n-1 (step S108), and proceeds to step S109.

As described above, in the present embodiment, based on the signal input to the control system 103, the information system 104 different from the control system 103 performs arithmetic processing, and transmits the processing result to the control system 103. A configuration in which the control system 103 is used to control the target device is illustrated. An output signal from the control system 103 to the information system 104 is used to input / output between a plurality of multi-level programs including control to the target device using a plurality of input signals from the control system 103 to the information system 104. Obtained through the accompanying arithmetic processing. In the overall system having such an input / output structure, the information system 104 can automatically formulate an appropriate execution order of the programs from the input / output relationship of each program.

FIG. 4 is a block diagram showing another configuration example of the information system and the control system. Referring to FIG. 4, the control system 103 has a plurality of computers 201, and the information system 104 has a plurality of computers 202.

As shown in FIG. 4, when the control system 103 includes a plurality of computers 201, the control system 103 confirms the processing execution status through communication between the computers 201, so that a predetermined execution order is crossed over the computers 201. Makes it possible to run a program.

In this case, the information system 104 determines the execution order of a plurality of programs, assigns a program for inputting a control signal to each of the plant equipment groups 101 to be controlled, and assigns the program to the computer 202 that executes the program. Is executed. According to this, even if the control system 103 includes a plurality of computers 201, the execution order of programs between the computers 201 can be appropriately determined.

In this case, the computer 201 that executes the program may be determined in advance for all or part of the plurality of programs. For example, the computer 201 that provides a control signal for a certain plant device may be determined in advance by a physical connection configuration. In that case, each computer 201 of the control system 103 executes the program assigned by the information system 104 in the execution order determined by the information system 104.

Further, as shown in FIG. 4, when the information system 104 includes a plurality of computers 202, the information system 104 confirms the status of processing execution by communication between the computers 202, whereby a predetermined amount of information is transmitted across the computers 202. Allows programs to be executed in order of execution. In that case, any one computer 202 or a plurality of computers 202 in the information system 104 cooperates to determine the execution order of the plurality of programs, assign each program to the computer 202 that executes the program, and the execution order. Run the program according to According to this, even if the information system 104 includes a plurality of computers 202, the execution order of programs between the computers 202 can be appropriately determined.

In this case, the computer 202 that executes the program may be predetermined for all or part of the plurality of programs. In that case, the information system 104 determines the execution order of the plurality of programs and assigns each program to the computer 202. At that time, if there is a computer 202 that is determined to execute a certain program, the information system 104 assigns the program to the computer 202.

FIG. 4 shows an example in which the information system 104 has a plurality of computers 202, but as another example, the information system 104 may be realized by a computer having a plurality of processors. The information system 104 may determine the execution order of a plurality of programs, assign these programs to a plurality of processors, and execute them according to the execution order.

Further, the control system 103 may be realized by a computer having a plurality of processors. The information system 104 may determine the execution order of a plurality of programs, assign it to each processor of the control system 103, and execute it according to the execution order.

As described above, in the example of FIG. 4, in the entire system in which one or both of the information system 104 and the control system 103 includes a plurality of computers, the computer 202 having the information system 104 changes to the computer 201 having the control system 103. Output signals from a plurality of computers 202 of the information system 104 and a plurality of computers 201 of the control system 103, and a plurality of computers 202 of the information system 104 and a plurality of control systems 103 The computer 201 is used for calculation. Even in such a configuration, an appropriate execution order of each program can be automatically formulated as in the above-described embodiment.

FIG. 5 is a diagram showing another example of a connection configuration of a plurality of programs in the present embodiment. In FIG. 5, as in FIG. 2, the left side is upstream and the right side is downstream. Multiple programs are classified into multiple hierarchies. In FIG. 5, the output of the upstream layer program is connected to the input of the downstream layer program.

Also, for the most part, the output of the upstream layer program is connected to the input of the downstream layer program. However, the output of the program assigned the number ((N-2) -3) becomes the input of the program of the same hierarchy assigned the number ((N-2) -4), and the number ((N-2) The output of the program assigned with) -4) is the input of the program assigned with the number ((N-2) -3). It can be said that the loop 301 is composed of the two programs.

Therefore, the information system 104 extracts the loop 301, presents the two programs constituting the extracted loop 301 to the user, and prompts the user to set which one to execute first.

The embodiments of the present invention described above are examples for explaining the present invention, and are not intended to limit the scope of the present invention only to those embodiments. Those skilled in the art can implement the present invention in various other modes without departing from the gist of the present invention. For example, the present invention is effective in a system configuration having a plurality of program groups for the purpose of calculating at least one output signal from at least one input signal.

DESCRIPTION OF SYMBOLS 101 ... Plant equipment group, 102 ... Communication path, 103 ... Control system, 104 ... Information system, 105 ... Communication line, 201 ... Computer, 202 ... Computer, 301 ... Loop

Claims

A control management system that manages control of target devices,
An information system for connecting inputs and outputs of a plurality of programs related to control of the target device, and determining an execution order of processing by the plurality of programs based on a connection form between the plurality of programs,
A control system that controls the target device based on processing results of the plurality of programs.
The control management according to claim 1, wherein the information system determines the execution order so that processing of a program upstream of the connection form of the plurality of programs is executed before processing of a program downstream. system.
The control system updates an output signal to the target device at a predetermined control cycle,
The information system uses the processing result of the upstream program executed at one execution timing according to the control cycle as the input when executing the downstream program at the same execution timing, and the downstream program Extracting a combination of programs and determining the execution order so that the downstream program is executed after the upstream program;
The control management system according to claim 2.
The information system is
The plurality of programs are connected in a connection form with a plurality of layers so that an input of a program included in a certain layer is an output of a program included in a layer preceding the layer,
When the connection form is changed, the first program included in a certain hierarchy uses the output of the second program included in the same or a subsequent hierarchy as an input and the first program Extract the combination of two programs,
Moving the second program to a hierarchy preceding the hierarchy including the first program;
The control management system according to claim 1.
The information system is
When the second program is moved to a hierarchy preceding the hierarchy including the first program, the second program uses an output of a program in the same hierarchy or a hierarchy subsequent thereto as an input. Adding a new hierarchy between the hierarchy including the first program and the hierarchy including the second program, and further moving the second program to the added hierarchy;
The control management system according to claim 4.
The information system is
The first program and the second program are included in the same first hierarchy, and the second program outputs the output of the program included in the second hierarchy immediately preceding the first hierarchy. When using as an input, a third layer is added between the first layer and the second layer, and the second program is moved to the third layer.
The control management system according to claim 5.
The information system extracts a program that outputs a control signal to the target device and extracts a program that outputs an input to the extracted program, and does not require the output of another program as an input The control management system according to claim 1, wherein the connection form is determined by repeating the process until it reaches.
The information system extracts a loop configured by connecting outputs and inputs between a plurality of programs, presents the plurality of programs forming the loop, and sets in which order the programs are executed The control management system according to claim 1, which prompts
The information system extracts a loop in which two programs out of the plurality of programs receive outputs from each other, presents the two programs forming the loop, and which one is executed first The control management system according to claim 8, which prompts setting.
The control management system according to claim 8, wherein when there is a program whose hierarchy has been changed twice, the information system extracts a loop including the program.
The information system generates an executable file by compiling and linking the plurality of programs as source programs.
The control management system according to claim 1.
A control method for controlling a target device by a computer system including an information system and a control system,
The information system connects the input and output of a plurality of programs related to the control of the target device, determines the execution order of processing by the plurality of programs based on the connection form of the plurality of programs,
A control method in which the control system controls the target device by executing processing by the plurality of programs in the execution order.