CN113791593A - Measuring point derivation method and system for distributed control system, terminal device and readable storage medium - Google Patents
Measuring point derivation method and system for distributed control system, terminal device and readable storage medium Download PDFInfo
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Abstract
The invention discloses a method and a system for exporting measurement points of a distributed control system, terminal equipment and a readable storage medium, wherein the method comprises the following steps: constructing a hierarchical data structure of the decentralized control system into a forest data structure; based on the forest data structure obtained by construction, exporting the measuring points of the distributed control system to a preset exporting template by a forest preorder traversal method, and finishing exporting the measuring points of the distributed control system; in the preset export template, a machine set number, a controller number, a branch number, a module number, a channel number and a measuring point label name of an I/O channel measuring point are used as keywords, and other attribute information of the I/O channel measuring point is used as a parameter item. According to the invention, the data measuring points of the DCS can be exported into the table, the statistical analysis and parameter batch modification of the data measuring points of the DCS can be realized based on the exported table, the labor cost can be reduced, and the reliability is improved.
Description
Technical Field
The invention belongs to the technical field of industrial control systems and DCS (distributed control system) data processing, and particularly relates to a measuring point exporting method and system of a distributed control system, terminal equipment and a readable storage medium.
Background
As described in the book of distributed control system principles and applications of thermal power plants, Distributed Control Systems (DCS) have been widely used in the field of industrial control. For a thermal power generating unit with numerous field devices and a complex control process, a DCS with excellent performance and friendly functions can play a vital role in construction, operation and maintenance of the thermal power generating unit.
Signals such as instructions and feedback of control equipment of the thermal power generating unit are accessed into the DCS through cables, the equipment signals are related to the DCS in a data mode of I/O channel measuring points according to a process system and a type corresponding to the equipment signals, and each I/O channel measuring point is divided at different positions of the DCS and has a plurality of different attributes. According to rough statistics, the number of the control devices of a single 350 MW-grade thermal power generating unit reaches thousands, the total number of the I/O channel measuring points can reach more than 10000, the number of the control devices of a single 1000 MW-grade thermal power generating unit is more, and the total number of the I/O channel measuring points can reach more than 20000.
When the thermal power generating unit operates and maintains, all control equipment under the unit needs to be subjected to statistical analysis regularly, the statistical data is generally based on the I/O channel measuring points, and the required data is obtained by screening and classifying the attribute information of the I/O channel measuring points, so that the operation and maintenance work such as asset management is performed on the control equipment of the unit. In addition, when the thermal power generating unit carries out DCS transformation work, all data information in the original DCS is migrated to the new DCS, wherein the attribute information of all I/O channel measuring points is included, after the original data information is obtained, the data information is modified according to the structure of the new DCS, and the data migration from the original DCS data information to the new DCS is achieved.
At present, when a traditional DCS performs operation and maintenance work or DCS transformation work on a thermal power generating unit, attribute information of a large number of I/O channel measuring points of the unit is screened, classified or modified, generally, the attribute information of the I/O channel measuring points is copied and recorded into a required data table according to a DCS format through a manual means, or a database of the DCS is operated, so that the attribute information of the I/O channel measuring points can be exported, the exported information is manually processed, the required data table can be obtained, and finally, the I/O channel measuring points are analyzed and counted through the data table. The conventional method not only needs to spend a large amount of labor cost, but also needs to avoid errors generated during manual operation, has poor reliability, needs a certain technical means when the database of the DCS is operated, and brings loss which cannot be estimated once the operation is wrong.
In summary, the conventional I/O channel measurement point derivation of the DCS is not convenient for operation and maintenance or modification of thermal power generating units, and a new measurement point derivation method and system for a distributed control system are urgently needed.
Disclosure of Invention
The invention aims to provide a measuring point derivation method, a measuring point derivation system, a terminal device and a readable storage medium of a distributed control system, so as to solve one or more of the technical problems. According to the invention, the data measuring points of the DCS can be exported into the table, the statistical analysis and parameter batch modification of the data measuring points of the DCS can be realized based on the exported table, the labor cost can be reduced, and the reliability is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention discloses a measuring point derivation method of a distributed control system, which comprises the following steps:
constructing a hierarchical data structure of the decentralized control system into a forest data structure;
based on the forest data structure obtained by construction, exporting the measuring points of the distributed control system to a preset exporting template by a forest preorder traversal method, and finishing exporting the measuring points of the distributed control system;
in the preset export template, a machine set number, a controller number, a branch number, a module number, a channel number and a measuring point label name of an I/O channel measuring point are used as keywords, and other attribute information of the I/O channel measuring point is used as a parameter item.
The invention is further improved in that the forest data structure is a forest data structure with a preset level height.
A further development of the invention is that the step of constructing the hierarchical data structure of the decentralized control system as a forest data structure comprises in particular: based on a hierarchical structure of a unit-controller-branch-module-channel of a distributed control system, the unit is taken as a root node of a first tree of a forest data structure, a controller is taken as a sub-node under the unit node, a branch is taken as a sub-node under the controller node, a module is taken as a sub-node under the branch node, and a channel is taken as a leaf node structure under the module node to obtain the forest data structure.
The invention has the further improvement that the preset export template is specifically a data table of I/O channel measuring points;
the table name and the list head name in the data table correspond to the attribute name of each node in the distributed control system;
and establishing a table page according to the forest data structure by using the module type name of the module node, and adding a machine group number column, a controller number column, a branch number column, a module number column and each attribute column of the channel into the table page to form a table header.
The invention is further improved in that the machine group number column, the controller number column, the branch number column, the module number column and the channel number column in the header are not empty; and each attribute column of the channel comprises a measuring point label name column, and the measuring point label name column is not empty.
The invention has the further improvement that the steps of exporting the measuring points of the distributed control system to a preset exporting template by utilizing a forest preorder traversal method based on the forest data structure obtained by construction specifically comprise the following steps:
and accessing the root node, traversing each subtree of the root node according to a preset sequence to obtain the data information of the leaf node, and inserting the corresponding items into a table page of the export template to obtain an export point table of the I/O channel measuring point.
A further development of the invention is that the preset sequence is a left-to-right sequence.
The invention discloses a measuring point derivation system of a decentralized control system, which comprises:
the data structure construction module is used for constructing a hierarchical data structure of the distributed control system into a forest data structure;
the traversal export module is used for exporting the measuring points of the distributed control system to a preset export template by utilizing a forest precedence traversal method based on the forest data structure obtained by construction so as to complete the export of the measuring points of the distributed control system; in the preset export template, a machine set number, a controller number, a branch number, a module number, a channel number and a measuring point label name of an I/O channel measuring point are used as keywords, and other attribute information of the I/O channel measuring point is used as a parameter item.
A terminal device of the present invention includes: a processor; a memory for storing computer program instructions; when the computer program instructions are loaded and run by the processor, the processor executes any of the above-described point derivation methods for a distributed control system according to the present invention.
The invention provides a readable storage medium, which stores computer program instructions, and when the computer program instructions are loaded and executed by a processor, the processor executes any of the above-mentioned point derivation methods of the distributed control system according to the invention.
Compared with the prior art, the invention has the following beneficial effects:
according to the method, the hierarchical structure of the DCS is constructed into a forest data structure with multi-level height, the measuring points are led out to a pre-customized leading-out template by a forest precedence traversal method, rapid leading-out of a large number of data measuring points can be achieved, a leading-out table is obtained, and statistical analysis and parameter batch modification of the I/O channel measuring points in the DCS can be achieved based on the leading-out table.
The invention can improve the working efficiency of users, reduce the work load of DCS data maintenance, reduce the labor cost, and simultaneously improve the accuracy and reliability of data through the automatic export of the system.
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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 are briefly introduced below; it is obvious that the drawings in the following description are some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic flow chart of a measurement point derivation method of a distributed control system based on forest preamble traversal according to an embodiment of the present invention;
FIG. 2 is a diagram of a forest structure of an I/O channel of a unit in the embodiment of the present invention;
FIG. 3 is a schematic diagram of a point derivation system of a distributed control system according to an embodiment of the present invention.
Detailed Description
In order to make the purpose, technical effect and technical solution of the embodiments of the present invention clearer, the following clearly and completely describes the technical solution of the embodiments of the present invention with reference to the drawings in the embodiments of the present invention; it is to be understood that the described embodiments are only some of the embodiments of the present invention. Other embodiments, which can be derived by one of ordinary skill in the art from the disclosed embodiments without inventive faculty, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1, a method for deriving measurement points of a distributed control system based on forest preamble traversal according to an embodiment of the present invention includes the following steps:
constructing a hierarchical data structure of the decentralized control system into a forest data structure; as an exemplary alternative, the forest data structure may be a forest data structure of a preset multi-level height;
and exporting the measuring points to a preset exporting template by utilizing a forest preorder traversal method to finish the exporting of the measuring points of the distributed control system.
The method of the embodiment of the invention can improve the working efficiency of the user, greatly reduce the workload of DCS data maintenance, and improve the accuracy of the data through the automatic derivation of the system.
Example 2
In the embodiment of the present invention, taking a hierarchical structure of a set, a controller, a branch, a module, and a channel of a DCS as an example, the step of constructing the hierarchical data structure of the distributed control system as the forest data structure specifically includes:
the DCS is formed by a hierarchical structure of unit-controller-branch-module-channel, the unit comprises a plurality of controllers, each controller comprises a plurality of branches, each branch comprises a plurality of modules, and each module comprises a plurality of channels. The method comprises the steps of constructing a depth 5 forest structure according to a DCS hierarchical structure, enabling a machine set to be a root node of a first tree of the forest structure, enabling a controller to be a sub-node below a machine set node, enabling branches to be sub-nodes below a controller node, enabling modules to be sub-nodes below branch nodes, and enabling channels to be sub-nodes below module nodes and leaf nodes.
In the embodiment of the invention, the I/O channel measuring points have large quantity in the DCS, high dispersion degree and more complex data management, and the data structure of the DCS is abstracted into a forest data structure, so that the I/O channel measuring points have clear structure and distinct hierarchy, the data processing is stable and ordered, and the insertion and modification of the I/O channel measuring points have more stable time complexity. The export of the I/O channel measuring points is traversed through forest precedence, so that repeated data searching can be avoided, the complexity of data management is reduced, and the export work efficiency of the I/O channel measuring points by the DCS is greatly improved.
Example 3
In the embodiment of the invention, the export template is a data table of I/O channel measuring points, table names and table header column names in the data table correspond to attribute names of nodes in a DCS, a table page is established according to a forest data structure and module type names of module nodes, and a machine set number column, a controller number column, a branch number column, a module number column and attribute columns of channels are added into the table page to form a table header. The unit number, the controller number, the branch number, the module number and the channel number form position information of the I/O channel measuring point in the DCS, and the position information has uniqueness, so that a unit number column, a controller number column, a branch number column, a module number column and a channel number column in a header cannot be null, and a measuring point label name in a thermal power unit also has uniqueness, so that a measuring point label name column in a header channel attribute cannot be null. And forming a preset export template by taking the unit number, the controller number, the branch number, the module number, the channel number and the measuring point label name of the I/O channel measuring point as keywords and other attribute information of the I/O channel measuring point as parameter items.
According to the method provided by the embodiment of the invention, the export template has higher flexibility, the export template can modify the number of table pages, and the I/O channel measuring points of any one or more module types can be exported according to actual requirements; the header can also be modified to derive any one or more types of I/O channel measurement point attribute information other than keywords. The export template has accuracy, the non-empty field in the header determines the uniqueness of the I/O channel measuring points, and in the export process, the DCS judges the non-empty field in the header of the export template and fills the I/O channel measuring points which meet the conditions into the data form in sequence, so that the accuracy of exporting the I/O channel measuring points is ensured. The template is led out conveniently, the functions of the table tool can be used for the led-out I/O channel measuring points to process data, and the data processing efficiency is greatly improved.
Example 4
In the embodiment of the invention, the step of exporting the measuring points to the preset exporting template by utilizing a forest preorder traversal method based on the forest data structure specifically comprises the following steps: firstly, establishing a exporting template by taking the module type name as a table page and taking the attributes of the forest root node, the sub-node and the leaf node as column names. Through forest traversal, a root node is visited first, then each sub-tree of the root node is traversed according to the sequence from left to right to obtain data information of leaf nodes, whether each node information corresponds to a table head column in a derivation template or not is judged, corresponding items are inserted into a table page, and finally a derivation point table of an I/O channel measuring point is obtained.
According to the method, a unit-controller-branch-module-channel hierarchical structure of the DCS is constructed into a multi-level forest data structure, measuring points are led out to a pre-customized leading-out template by a forest pre-sequencing traversal method, rapid leading-out of a large number of data measuring points can be achieved, a leading-out table is obtained, and statistical analysis and parameter batch modification of I/O channel measuring points in the DCS can be achieved based on the leading-out table. The invention can improve the working efficiency of users, reduce the workload of DCS data maintenance, and can improve the accuracy of data through the automatic export of the system.
Example 5
According to the method for exporting the measured points of the distributed control system based on forest preamble traversal, the exported measured points can be operated according to a unit or a controller as an object, and I/O channel measured points in a domestic DCS (as described in a book of 'principle and application of a distributed control system of a thermal power plant') can be exported. If a domestic DCS is provided with M controllers and each controller is provided with N modules, the measuring point table can be derived by the method.
Optionally, the method of the present invention may derive all controllers of the plant or a plurality of controllers, and may screen the controllers.
The invention provides a measuring point derivation method of a distributed control system based on forest preamble traversal, which comprises the following steps:
step 1, carrying out batch processing operation after exporting the I/O channel measuring points in the DCS.
Step 1.1, firstly, a derivation template is established, and measuring point keywords and parameter items which need to be derived are taken as data items and added into a list of the template. The measuring point keyword is an identifier for judging the uniqueness of a measuring point, a table header field of the measuring point keyword needs to be established in the template, the measuring point parameter item is an attribute parameter of the measuring point, and the table header field of the required measuring point parameter item can be established in the template according to derivation requirements.
Step 1.2, exemplary: the hierarchical structure of the domestic I/O channel measuring point is as follows: controller-branch-module-I/O channel test point. Traversing branches in the controller by taking the controller as a unit, traversing all modules from the branches, traversing each channel in the modules, taking out an I/O channel measuring point object, matching the I/O channel measuring point object under the modules with a header field of a derivation template to obtain keywords and parameter items of the I/O channel measuring points, and filling the keywords and the parameter items of the I/O channel measuring points into the derivation template to form a controller DCSI/O channel measuring point table.
Referring to fig. 2, in the embodiment of the present invention, the number of controllers in a unit is M1, the number of branches under a single controller is M2, the number of modules under a single branch is M3, the number of channels under a single module is M4, and the height of a forest is 5, and the controllers under the unit are sequentially traversed until reaching a channel measurement point, so as to complete the derivation of the channel measurement point.
Taking the I/O channel forest traversal of the controller 1 as an example, the following is the order traversal order of the controller 1 forest:
(1) controller 1-branch 1;
(2) traversing the branch 1;
(3) traversing the module 1, and taking out the measuring points of each channel with the number of M4 under the module 1; traversing the module 2, taking out the channel measuring points with the number of M4 under the module 2, and taking out the channel measuring points with the number of M4 under the module M3 in the calendar module M3;
(4) traversing the branch 2, and taking out the channel measuring points of each module under the branch 2 in the same step 3;
(5) traversing branch M2, the same procedure as step 3, and taking out the channel test points of each module under branch M2.
And finally, summarizing the results of the first-order traversal from the controller 1 to the controller M1, and finally forming a channel measuring point export of the unit.
Example 6
Compared with the foregoing embodiment 5, the embodiment of the present invention further includes:
and step 1.3, screening the keywords and the parameter items in the formed controller I/O point table to obtain measuring points meeting the conditions, and modifying or checking the measuring points in batches.
In the embodiment of the invention, when the unit is operated, the export point table of each controller is formed by taking the controller as a unit, and then the export point tables are combined to obtain the DCS unit point table.
In the embodiment of the invention, the power plant needs to perform statistical analysis on all measuring points of the power plant to obtain the number of a certain current transmitter of the power plant. The method can be used for firstly establishing a derivation template, adding the measurement points KKS (Uniform identification code of power plant equipment) serving as keywords into a header column of the derivation template, then adding the types of the measurement points serving as parameter items into the header column of the derivation template, executing the derivation method, automatically filling the measurement points into the derivation template by a system to form a derivation table, and then screening the types of the measurement points in the table according to the corresponding types of the transmitters, so that the quantity of the transmitters of the required types can be obtained.
Example 7
Referring to fig. 3, a point deriving system of a distributed control system according to an embodiment of the present invention includes:
the data structure construction module is used for constructing a hierarchical data structure of the distributed control system into a forest data structure;
the traversal export module is used for exporting the measuring points of the distributed control system to a preset export template by utilizing a forest precedence traversal method based on the forest data structure obtained by construction so as to complete the export of the measuring points of the distributed control system; in the preset export template, a machine set number, a controller number, a branch number, a module number, a channel number and a measuring point label name of an I/O channel measuring point are used as keywords, and other attribute information of the I/O channel measuring point is used as a parameter item.
The system of the embodiment of the invention can improve the working efficiency of users, greatly reduce the workload of DCS data maintenance, and improve the accuracy of data through the automatic derivation of the system.
Example 8
A terminal device according to an embodiment of the present invention includes:
on the hardware level, the terminal device comprises: the processor optionally further comprises an internal bus, a network interface and a memory. The memory may include a memory, such as a high speed random access memory, and may also include a non-volatile memory, such as at least one disk memory. Of course, the electronic device may also include hardware required for other services.
The processor, network interface, memory are interconnected by an internal bus, which may be an industry standard architecture bus, a peripheral component interconnect standard bus, an extended industry standard architecture bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc.
The memory is used for storing programs. In particular, the program may include program code, which includes computer operating instructions. The memory may include both memory and non-volatile storage and provides instructions and data to the processor.
The processor reads the corresponding computer program from the nonvolatile memory into the memory and then runs the computer program to form the electronic equipment on the logic level. When the processor executes the program, the following operations are specifically executed: constructing a hierarchical data structure of the decentralized control system into a forest data structure; based on the forest data structure obtained by construction, exporting the measuring points of the distributed control system to a preset exporting template by a forest preorder traversal method, and finishing exporting the measuring points of the distributed control system; in the preset export template, a machine set number, a controller number, a branch number, a module number, a channel number and a measuring point label name of an I/O channel measuring point are used as keywords, and other attribute information of the I/O channel measuring point is used as a parameter item.
Example 9
In an embodiment of the present invention, the present invention further provides a storage medium, specifically a computer-readable storage medium (Memory), where the computer-readable storage medium is a Memory device in a computer device and is used to store programs and data. It is understood that the computer readable storage medium herein can include both built-in storage media in the computer device and, of course, extended storage media supported by the computer device. The computer-readable storage medium provides a storage space storing an operating system of the terminal. Also, one or more instructions, which may be one or more computer programs (including program code), are stored in the memory space and are adapted to be loaded and executed by the processor. It should be noted that the computer-readable storage medium may be a high-speed RAM memory, or may be a non-volatile memory (non-volatile memory), such as at least one disk memory. One or more instructions stored in the computer-readable storage medium can be loaded and executed by the processor to implement the corresponding steps of the point derivation method in the distributed control system in the above embodiments.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.
Claims (10)
1. A measuring point derivation method of a distributed control system is characterized by comprising the following steps:
constructing a hierarchical data structure of the decentralized control system into a forest data structure;
based on the forest data structure obtained by construction, exporting the measuring points of the distributed control system to a preset exporting template by a forest preorder traversal method, and finishing exporting the measuring points of the distributed control system;
in the preset export template, a machine set number, a controller number, a branch number, a module number, a channel number and a measuring point label name of an I/O channel measuring point are used as keywords, and other attribute information of the I/O channel measuring point is used as a parameter item.
2. The method for exporting the measuring points of the distributed control system according to claim 1, wherein the forest data structure is a forest data structure with a preset stage height.
3. The distributed control system measure point derivation method according to claim 1, wherein the step of constructing the hierarchical data structure of the distributed control system as a forest data structure specifically comprises:
based on a hierarchical structure of a unit-controller-branch-module-channel of a distributed control system, the unit is taken as a root node of a first tree of a forest data structure, a controller is taken as a sub-node under the unit node, a branch is taken as a sub-node under the controller node, a module is taken as a sub-node under the branch node, and a channel is taken as a leaf node structure under the module node to obtain the forest data structure.
4. The method for exporting the measuring points of the distributed control system according to claim 3, wherein the preset exporting template is a data table of I/O channel measuring points;
the table name and the list head name in the data table correspond to the attribute name of each node in the distributed control system;
and establishing a table page according to the forest data structure by using the module type name of the module node, and adding a machine group number column, a controller number column, a branch number column, a module number column and each attribute column of the channel into the table page to form a table header.
5. The method of claim 4, wherein the column of the set number, the column of the controller number, the column of the branch number, the column of the module number, and the column of the channel number in the header are not empty;
and each attribute column of the channel comprises a measuring point label name column, and the measuring point label name column is not empty.
6. The method for exporting the measured points of the distributed control system according to claim 4, wherein the step of exporting the measured points of the distributed control system to a preset exporting template by using a forest preface traversal method based on the forest data structure obtained by construction specifically comprises the steps of:
and accessing the root node, traversing each subtree of the root node according to a preset sequence to obtain the data information of the leaf node, and inserting the corresponding items into a table page of the export template to obtain an export point table of the I/O channel measuring point.
7. The method of claim 6, wherein the predetermined sequence is from left to right.
8. A distributed control system measurement point derivation system, comprising:
the data structure construction module is used for constructing a hierarchical data structure of the distributed control system into a forest data structure;
the traversal export module is used for exporting the measuring points of the distributed control system to a preset export template by utilizing a forest precedence traversal method based on the forest data structure obtained by construction so as to complete the export of the measuring points of the distributed control system; in the preset export template, a machine set number, a controller number, a branch number, a module number, a channel number and a measuring point label name of an I/O channel measuring point are used as keywords, and other attribute information of the I/O channel measuring point is used as a parameter item.
9. A terminal device, comprising: a processor; a memory for storing computer program instructions; it is characterized in that the preparation method is characterized in that,
when loaded and executed by the processor, the computer program instructions perform the decentralized control system site derivation method of any one of claims 1 to 7.
10. A readable storage medium storing computer program instructions, wherein the computer program instructions, when loaded and executed by a processor, cause the processor to perform the distributed control system site derivation method of any one of claims 1 to 7.
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