CN112596477A - Graphical logic control method and system - Google Patents
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- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41835—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by programme execution
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- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
A graphical logic control method and system, reading the non-graphical control language of DCS system; converting the non-graphical control language into a first text description file in a text format; converting the first text description file into a graphical logic, and controlling and adjusting the graphical logic; converting the adjusted graphical logic into a second text description file; converting the second text description file into a DCS control language; and inputting the DCS system control language into a DCS control system for logic control. The method can flexibly and graphically display the logic process, can perform online test, optimization and control strategy optimization, and reduces logic errors and personal safety accidents of the thermal power generating unit; the invention changes the control logic of the black box mode into the processes of graphical control module scheme, variable value dynamic refreshing, logic online modification and operation test, and can bring very obvious production benefits to the thermal production process of the power plant.
Description
Technical Field
The invention belongs to the technical field of DCS control, and particularly relates to a graphical logic control method and a graphical logic control system.
Background
The DCS is also called a 'distributed control system' or a 'distributed computer control system', and is a new generation of instrument control system based on a microprocessor and adopting a design principle of distributed control function, centralized display operation, and consideration of division, autonomy and comprehensive coordination.
At present, a power plant uses a DCS (distributed control system) to control the power plant, most of the DCS adopted by the existing power plant is a FOXBORO (Focus Polo) IA system (I/A Series industrial control system), the logic of the DCS is in a statement form, the logic cannot be visually checked, and the logic can be analyzed only by manually translating the logic sentence by sentence into a SAMA (SAMA) diagram. Although CAD versions can be referred to, along with the year-by-year logic modification, the modification and updating of some CAD logic diagrams cannot be synchronized, so that the logic is unclear, and the mastering of some logics by operators and thermal operators and the analysis of some events are influenced.
In addition, during the long-time operation of the power plant, the logic is transformed by different personnel and various control schemes, partial garbage logic or potential errors exist in a logic control program, a thermotechnical worker who is newly handed over can hardly read clear logic processes and control principles, great risks exist for the safe operation of a unit, and the new logic is difficult to be upgraded and transformed. A new logic control processing solution is needed.
Disclosure of Invention
Therefore, the invention provides a graphical logic control method and a graphical logic control system, which can flexibly and graphically display the logic process and can perform online test, optimization and control strategy optimization; the accuracy of a thermal power unit control scheme is ensured, so that logic errors and personal safety accidents of the thermal power unit are reduced.
In order to achieve the above purpose, the invention provides the following technical scheme: a graphical logic control method, comprising the steps of:
reading a non-graphical control language of a DCS;
step two, converting the non-graphical control language into a first text description file in a text format;
step three, converting the first text description file into a graphical logic, and controlling and adjusting the graphical logic;
step four, converting the adjusted graphical logic into a second text description file;
fifthly, converting the second text description file into a DCS control language;
and step six, inputting the DCS system control language into a DCS control system for logic control.
As a preferable scheme of the graphic logic control method, in the third step, scanning and converting the first text description file to form a statement logic.
As the preferred scheme of the graphical logic control method, in the process of forming statement logic, the statement logic of the form filling control mode is translated into the graphical logic line by line.
As a preferred scheme of the graphical logic control method, in step three, the control adjustment mode of the graphical logic includes performing one or more of real-time logic synchronization, real-time dynamic analysis, offline simulation test, online parameter modification and control logic optimization on an industrial control computer.
As a preferred scheme of the graphical logic control method, in step five, the text logic signal in the second text description file is converted into a signal value transmitted through a variable name, the text logic is converted into an algorithm function, and a stacked signal value storage mode is converted into a fixed memory area read-write mode.
The invention also provides a graphical logic control system, comprising:
the control language reading module is used for reading the non-graphical control language of the DCS;
the first conversion module is used for converting the non-graphical control language into a first text description file in a text format;
the graphical module is used for converting the first text description file into graphical logic;
the adjusting module is used for controlling and adjusting the graphical logic;
the second conversion module is used for converting the adjusted graphical logic into a second text description file;
the control language regeneration module is used for converting the second text description file into a DCS system control language;
and the control language writing module is used for inputting the DCS control language into the DCS control system for logic control.
As a preferred scheme of the graphic logic control system, the graphic module scans and converts the first text description file to form a statement logic, and translates the statement logic of the form filling control mode into the graphic logic line by line in the process of forming the statement logic.
As a preferred scheme of the graphic logic control system, in the adjustment module, the control adjustment mode of the graphic logic includes one or more of real-time logic synchronization, real-time dynamic analysis, off-line simulation test, on-line parameter modification and control logic optimization on an industrial control computer.
As a preferred scheme of the graphic logic control system, in the second conversion module, the text logic signal in the second text description file is converted into a signal value transmitted by a variable name, the text logic is converted into an algorithm function, and a stacked signal value storage mode is converted into a fixed memory area read-write mode.
The invention has the following advantages: reading a non-graphical control language of the DCS; converting the non-graphical control language into a first text description file in a text format; converting the first text description file into a graphical logic, and controlling and adjusting the graphical logic; converting the adjusted graphical logic into a second text description file; converting the second text description file into a DCS control language; and inputting the DCS system control language into a DCS control system for logic control. The system can quickly convert a language form-filling type logic control process into a graphic modular structure, the connection of logic modules is a variable name and linear connection mode, the logic principle, the control method and the control parameters of each unit object device can be graphically displayed, the logic principle of the control process, the connection relation among the control modules and the parameter values of the control modules can be perfectly displayed, the convenience of thermal engineering personnel in control logic test, optimization, modification upgrading and maintenance can be greatly improved, the logic of the modification can be upgraded and upgraded to be used for improving the whole process of test, optimization and confirmation on the system, and the system can play a great role in ensuring the safety production of a power plant; the invention changes the control logic of the black box mode into the processes of graphical control module scheme, variable value dynamic refreshing, logic online modification and operation test, and can bring very obvious production benefits to the thermal production process of the power plant.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
Fig. 1 is a schematic diagram of a graphical logic control method provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a graphical logic control graphical interface provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a graphical logic control scheme provided in an embodiment of the present invention;
fig. 4 is a schematic diagram of a graphic logic control system according to an embodiment of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2 and 3, there is provided a graphic logic control method including the steps of:
s1, reading the non-graphical control language of the DCS;
s2, converting the non-graphical control language into a first text description file in a text format;
s3, converting the first text description file into a graphical logic, and controlling and adjusting the graphical logic;
s4, converting the adjusted graphical logic into a second text description file;
s5, converting the second text description file into a DCS system control language;
and S6, inputting the DCS system control language into a DCS control system for logic control.
Specifically, in S3, scan conversion is further performed on the first text description file to form a sentence logic. In the process of forming the statement logic, the statement logic of the form filling control mode is translated into the graphical logic line by line. In S3, the control adjustment mode of the graphic logic includes one or more of real-time logic synchronization, real-time dynamic analysis, off-line simulation test, on-line parameter modification and control logic optimization on the industrial control computer.
Specifically, in S5, the text logic signal in the second text description file is converted into a signal value transmitted by a variable name, the text logic is converted into an algorithm function, and the storage mode of the stacked signal value is converted into a read-write mode in the fixed memory area.
Referring to fig. 4, the present invention further provides a graphic logic control system, including:
the control language reading module 1 is used for reading the non-graphical control language of the DCS;
the first conversion module 2 is used for converting the non-graphical control language into a first text description file in a text format;
the graphical module 3 is used for converting the first text description file into graphical logic;
the adjusting module 4 is used for controlling and adjusting the graphical logic;
the second conversion module 5 is used for converting the adjusted graphical logic into a second text description file;
the control language regeneration module 6 is used for converting the second text description file into a DCS system control language;
and the control language writing module 7 is used for inputting the DCS control language into the DCS control system for logic control.
Specifically, the graphic module 3 scans and converts the first text description file to form a statement logic, and translates the statement logic of the form filling control mode into a graphic logic line by line in the process of forming the statement logic. In the adjusting module 4, the control adjusting mode of the graphical logic comprises one or more of real-time logic synchronization, real-time dynamic analysis, off-line simulation test, on-line parameter modification and control logic optimization on an industrial control computer. In the second conversion module 5, the text logic signal in the second text description file is converted into a signal value transmitted by a variable name, the text logic is converted into an algorithm function, and the storage mode of the stacked signal value is converted into a read-write mode of a fixed memory area.
The graphical logic control related in the invention is to automatically convert an IA logic control process text file derived from FOXBORO into graphical logic aiming at the DCS logic which is actually running, thereby not only meeting the logic requirements of thermal engineering personnel for looking up, researching and testing, keeping the logic graph up to date, but also finishing the whole logic control process of the thermal power generating unit. The invention can perfectly realize the statement table-filling type logic process through imaging, realizes the imaging, visualization and accurate control process of the thermal power unit logic control, is installed on an industrial controller, and realizes the clear logic control process of the thermal power unit.
Specifically, a graphic file with strong readability is automatically generated by importing a DCS logic backup file; the method has the advantages that the method has the function of on-line testing based on the formed graphic logic, the control logic process can completely replace the IA statement filling type logic process of FOXBORO, great help can be provided for improving the logic test and optimization process of thermal workers, and the 1:1 complex control process of the IA logic on the thermal power generating unit can be completed.
With the aid of fig. 2, in order to implement an IA statement form-filling type logical process, the present invention completely converts an IA language form-filling type device object logical control process into an execution process of logical modules, all the logical modules can be graphically displayed on a window of an industrial controller, each control logical module is changed into a graphical control block, parameter modification, logical modification, control logical verification and control strategy optimization can be performed on each module on a graphical window, each logical module is graphically displayed, control signal transmission among the logical modules is in line connection, parameter values of logical signals can also be displayed, and all the processes of logical control can be clearly displayed in each step of control logical operation.
Specifically, aiming at the graphical display and execution of the control process, the invention can firstly carry out the operation of the control logic on the industrial controller, and the operation result of each step can also be displayed on the graphical module window. The thermal staff can visually write the control logic and test each step of the logic operation process in a graphic modularization mode. The invention can also read the logic of IA into the graphic logic control system in the industrial controller, analyze the control logic process of IA, can carry on the dynamic simulation test to the logic of IA, the graphic display result; the method can also be used for single-step or continuous simulation operation, experiment logic operation process parameters, optimization of a logic control scheme and completion of the whole control logic process of the thermal power generating unit.
Before the modified IA control logic is put into the logic control process of the thermal power generating unit, simulation test can be carried out on a graphical logic control system, and simulation optimization and logic verification of a graphical visual window are one aspect, wherein the most important thing is that the logic meets the practical application of the site after verification, and the correctness of the logic control of the thermal power generating unit is ensured.
Specifically, aiming at the DCS logic which is actually running, the logic control text file which is exported by the control logic scheme of the form filling language mode is automatically converted into a graphical and modular logic control process. The graphic logic performs dynamic simulation calculation, and can also perform single-step simulation, experiment logic process and optimization logic control scheme. Further, visual analysis, research, test logic and unit logic control of thermal workers on the unit IA logic can be completed. After the IA logic of the FOXBORO of the unit is modified, the logic dynamic operation test can be carried out by utilizing the graphical logic control system.
Specifically, software development is carried out on a graphical logic control system so as to meet graphical display, operation and test of control logic, and various complex thermal power generating unit operation controls can be completed. The control logic process optimization improves the contents as follows: carrying out graphic visual translation conversion on the fill-up statement type logic process of the IA control logic; performing dynamic simulation test on the translated and converted logic, running each logic control process module in a single step, and pausing after one operation every 200ms until an engineer clicks a single step execution button again to perform the next logic cycle; or all logic control process modules can be operated continuously, the operation is performed once every 200ms, the calculation result is recorded in the memory information, and then the operation is performed again on the basis of the current calculation result, so that the logic process can be subjected to closed-loop adjustment and logic loop iterative calculation. The double click of any logic control module can pop up a control structure graph window of the logic module, can clearly display the parameter value input process and the parameter output process after logic operation of the control block, and can modify all control parameters on line, and the modified parameters can be directly used for enjoying the pleasure of clouds on line. On the window of the graphic logic control system, the input instruction and the input parameter value of each control module can be modified on line, and the modified control parameters can directly enter the next iteration calculation of the next control logic process to complete the logic control process of the unit.
With the aid of fig. 3, the invention can automatically read in a logic control module as a graphical module according to an IA table-filling type statement logic file, can dynamically analyze the IA logic, perform simulation test, modify parameters on line, and the like, completely meets the problems of invisibility of the IA logic and incapability of dynamic test/optimization, can greatly improve the logic control security of the thermal power unit, and optimizes the unit control strategy.
Reading the non-graphic control language of DCS system by industrial control computer, converting it into text description file with notebook format of control logic, scanning and converting the text format control logic description file in industrial control computer to form sentence logic, the invention relates to an industrial proprietary control logic process algorithm for converting a logic control statement process into a graphic control process, which is designed according to different classifications, the statement logics of a filling control mode are automatically translated into a graphic module logic process line by line, the graphic logic control system can convert text process logics into control function modules automatically, and text description control signals are analyzed into a signal transmission mode of a variable name coding mode. The invention can convert a control logic and signal value recording mode described by a text into a graphical algorithm function module and a signal variable name mode, can complete statement type control logic control through the operation of a logic function block, and transmits a signal parameter value through a variable name.
The logic graphic block can be synchronized logically in real time on an industrial control computer, can be dynamically analyzed in real time, can be subjected to off-line simulation test, can be used for modifying on-line parameters, and can realize the optimization of control logic. The optimized graphic logic is converted into statement logic, logic language which can be identified by the DCS system is formed for downloading, and the closed loop function of the whole control is realized.
Reading a non-graphical control language of a DCS; converting the non-graphical control language into a first text description file in a text format; converting the first text description file into a graphical logic, and controlling and adjusting the graphical logic; converting the adjusted graphical logic into a second text description file; converting the second text description file into a DCS control language; and inputting the DCS system control language into a DCS control system for logic control. The system can quickly convert a language form-filling type logic control process into a graphic modular structure, the connection of logic modules is a variable name and linear connection mode, the logic principle, the control method and the control parameters of each unit object device can be graphically displayed, the logic principle of the control process, the connection relation among the control modules and the parameter values of the control modules can be perfectly displayed, the convenience of thermal engineering personnel in control logic test, optimization, modification upgrading and maintenance can be greatly improved, the logic of the modification can be upgraded and upgraded to be used for improving the whole process of test, optimization and confirmation on the system, and the system can play a great role in ensuring the safety production of a power plant; the invention changes the control logic of the black box mode into the processes of graphical control module scheme, variable value dynamic refreshing, logic online modification and operation test, and can bring very obvious production benefits to the thermal production process of the power plant.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (9)
1. A graphical logic control method is characterized by comprising the following steps:
reading a non-graphical control language of a DCS;
step two, converting the non-graphical control language into a first text description file in a text format;
step three, converting the first text description file into a graphical logic, and controlling and adjusting the graphical logic;
step four, converting the adjusted graphical logic into a second text description file;
fifthly, converting the second text description file into a DCS control language;
and step six, inputting the DCS system control language into a DCS control system for logic control.
2. The method according to claim 1, wherein in step three, the method further comprises performing scan conversion on the first text description file to form statement logic.
3. The method of claim 2, wherein in the process of forming the statement logic, the statement logic of the form-filling control mode is translated into the graphical logic line by line.
4. The method according to claim 1, wherein in step three, the control adjustment manner of the graphic logic comprises one or more of real-time logic synchronization, real-time dynamic analysis, off-line simulation test, on-line parameter modification and control logic optimization on an industrial control computer.
5. The method according to claim 1, wherein in step five, the text logic signal in the second text description file is converted into a signal value transmitted by a variable name, the text logic is converted into an algorithm function, and a stacked signal value storage mode is converted into a fixed memory area read-write mode.
6. A graphical logic control system, comprising:
the control language reading module is used for reading the non-graphical control language of the DCS;
the first conversion module is used for converting the non-graphical control language into a first text description file in a text format;
the graphical module is used for converting the first text description file into graphical logic;
the adjusting module is used for controlling and adjusting the graphical logic;
the second conversion module is used for converting the adjusted graphical logic into a second text description file;
the control language regeneration module is used for converting the second text description file into a DCS system control language;
and the control language writing module is used for inputting the DCS control language into the DCS control system for logic control.
7. The graphic logic control system according to claim 6, wherein the graphic module scans and converts the first text description file to form a statement logic, and in the process of forming the statement logic, the statement logic of the form-filling control mode is translated into the graphic logic line by line.
8. The graphic logic control system of claim 6, wherein in the adjustment module, the control adjustment manner of the graphic logic comprises one or more of real-time logic synchronization, real-time dynamic analysis, off-line simulation test, on-line parameter modification and control logic optimization on an industrial control computer.
9. The graphic logic control system according to claim 6, wherein in the second conversion module, the text logic signal in the second text description file is converted into a signal value transmitted by a variable name, the text logic is converted into an algorithm function, and a stacked signal value storage mode is converted into a fixed memory area read-write mode.
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2020
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