CN117195206B - Method, system, equipment and medium for acquiring trusted state of DCS controller in real time - Google Patents
Method, system, equipment and medium for acquiring trusted state of DCS controller in real time Download PDFInfo
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Abstract
The invention discloses a method, a system, equipment and a medium for acquiring the trusted state of a DCS controller in real time, which comprise the steps of receiving a trusted state acquisition item configuration file issued by a tool end; analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information, and link information of a trusted state output variable and a global IO variable; acquiring the current controller trusted state through an interface program every fixed period, assigning a value based on the trusted state, and storing the trusted state value at a global trusted state variable; periodically obtaining item information according to the trusted state, taking a value from a global trusted state variable, combining and arranging bits of the trusted state variable according to trusted display convention with an upper computer, and assigning values; and periodically assigning the trusted state output variable to the global IO variable. The method improves the use experience of the DCS by the user, and increases the safety and reliability of the whole DCS system as a whole.
Description
Technical Field
The invention relates to the technical field of data processing of a distributed control system, in particular to a method, a system, equipment and a medium for acquiring a trusted state of a DCS controller in real time.
Background
A Distributed Control System (DCS) is a specially designed control system for controlling complex, large-scale applications in industrial processes. The controller is the brain of the distributed control system, controls the various subsystems distributed in the control area, and performs control algorithms and configurations of the various devices, processing and network communications between the engineering computers. The reliability, stability and high timeliness of the controller are the guarantee of the high reliability, flexibility, coordination and stability of the distributed control system, so the design and implementation of any one function in the controller must be based on the premise of reliability, stability and high timeliness.
With the rapid development and popularization of internet technology, malicious attack networks such as computer viruses, trojans, hackers and the like are increasingly frequent, and particularly for a power system, the malicious attacks can damage the safety of the power system, and serious influence can be caused by improper treatment. At present, a special trusted protection system for a distributed control system does not exist, and a trusted acquisition method suitable for the characteristics of the distributed control system is not available in the aspects of trusted state acquisition and collection.
Disclosure of Invention
Aiming at the defects, the invention provides a method, a system, equipment and a medium for acquiring the trusted state of a DCS controller in real time.
In order to achieve the above purpose, the invention adopts the following technical means:
the first aspect of the invention provides a method for acquiring a trusted state of a DCS controller in real time, which comprises the following steps:
receiving a trusted status acquisition item configuration file issued by a tool end;
analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information, and link information of a trusted state output variable and a global IO variable;
acquiring the current controller trusted state through an interface program every fixed period, assigning a value based on the trusted state, and storing the trusted state value at a global trusted state variable;
based on the trusted state acquisition period, periodically taking values from the global trusted state variables according to the trusted state acquisition item information, carrying out bit combination and arrangement on the trusted state variables according to trusted display conventions with an upper computer, and then giving the values after bit combination and arrangement to corresponding trusted state output variables; according to the link information relation between the trusted state value and the global IO variable, the trusted state output variable is periodically assigned to the global IO variable; and periodically transmitting the trusted state output variable and the global IO variable value to the upper computer.
As a further improvement of the invention, the tool end configures a trusted state acquisition period and trusted state acquisition item information, and links the trusted state output value with the global IO variable.
As a further improvement of the invention, after the tool end links the trusted state value with the global IO variable, the tool end outputs the corresponding trusted state output value to the global IO variable according to the link information.
As a further improvement of the invention, the current controller trusted state is obtained through an interface program every fixed period, assignment is carried out based on the trusted state, and the trusted state value is stored in a global trusted state variable; comprising the following steps:
the controller acquires the trusted state acquisition item information through the interface program every fixed period, determines the current trusted state of the controller through the trusted state acquisition item information, assigns a value to the trusted state variable when the controller can successfully acquire the trusted state, and stores the trusted state value at the global trusted state variable.
As a further improvement of the present invention, the determining the current trusted state of the controller by the trusted state acquisition item information further includes:
when the controller fails to initialize the trusted state variable or fails to acquire the trusted state, the trusted state variable is assigned other values than the trusted state value.
As a further improvement of the invention, the periodic sending of the trusted state output variable and the global IO variable value to the upper computer is to package the combination of the trusted state output variable and the global IO variable value and send the combination to the upper computer.
As a further improvement of the invention, the method is used for analyzing and displaying the upper computer, wherein the analyzing and displaying of the upper computer is as follows:
and arranging and combining the trusted state values of the controller in a mode appointed with the upper computer, and displaying the trusted state values in the upper computer.
The second aspect of the present invention provides a system for acquiring a trusted state of a DCS controller in real time, including:
the receiving module is used for receiving the trusted status acquisition item configuration file issued by the tool end;
the analysis module is used for analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information and link information of a trusted state output variable and a global IO variable;
the acquisition module is used for acquiring the current controller trusted state through the interface program every fixed period, assigning values based on the trusted state and storing the trusted state value at a global trusted state variable;
the output module is used for periodically taking values from the global trusted state variables according to the trusted state acquisition item information based on the trusted state acquisition period, carrying out bit combination and arrangement on the trusted state variables according to trusted display conventions with an upper computer, and then giving the values after bit combination and arrangement to the corresponding trusted state output variables; according to the link information relation between the trusted state value and the global IO variable, the trusted state output variable is periodically assigned to the global IO variable; and periodically transmitting the trusted state output variable and the global IO variable value to the upper computer.
The third aspect of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements the method for acquiring the trusted status of the DCS controller in real time when executing the computer program.
A fourth aspect of the present invention provides a computer readable storage medium storing a computer program, which when executed by a processor, implements the DCS controller trusted state real-time acquisition method.
Compared with the prior art, the invention has the following beneficial effects:
on the one hand, the controller periodically acquires the current controller trusted state through the interface program, on the other hand, the controller acquires the controller trusted state in the algorithm task according to the trusted state acquisition period and the trusted state acquisition item information configured by the tool end, and arranges and combines the controller trusted state values in a mode agreed with an upper computer, and the controller acquires the trusted state through the interface program and the task of acquiring the trusted state value in the real-time task, so that the task of acquiring the trusted state can be ensured not to influence the real-time task of the controller, the running reliability of the controller in the DCS is maintained, and the high timeliness of the real-time task in the controller is also maintained; the trusted system and the DCS are fused together, so that the use experience of a user on the DCS is improved, and the safety and reliability of the whole DCS system are improved.
Drawings
FIG. 1 is a flow chart of a method for acquiring the trusted state of a DCS controller in real time;
FIG. 2 is a diagram of a system for acquiring the trusted status of a DCS controller in real time;
fig. 3 is a schematic diagram of an electronic device according to the present invention.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
In order to ensure the safety performance of the terminal, the method mainly plays a role through host software call at present, only the starting measurement can be carried out on the starting process of the terminal, and if the starting measurement result is credible, the terminal is considered to be in a credible state. In the prior art, the trusted state of the terminal is only evaluated according to the starting measurement result of the terminal, the trusted state in the running process of the terminal is not considered, the starting measurement in the prior art does not comprise the starting measurement of the application program, and the trusted state of the terminal also does not consider the starting measurement result of the application program, so that the evaluation result of the trusted state of the terminal in the prior art is inaccurate.
In order to obtain the trusted status of the characteristics of the distributed control system in real time, as shown in fig. 1, a first object of the present invention is to provide a method for obtaining the trusted status of a DCS controller in real time, which includes the following steps:
s1, receiving a trusted state acquisition item configuration file issued by a tool end;
s2, analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information, and link information of a trusted state output variable and a global IO variable;
s3, acquiring the current controller trusted state through an interface program every fixed period, assigning values based on the trusted state, and storing the trusted state value at a global trusted state variable;
s4, based on the trusted state acquisition period, periodically acquiring item information according to the trusted state, taking a value from a global trusted state variable, combining and arranging the trusted state variable according to trusted display convention with an upper computer, and then giving the value after the bit combination and arrangement to a corresponding trusted state output variable; according to the link information relation between the trusted state value and the global IO variable, the trusted state output variable is periodically assigned to the global IO variable; and periodically transmitting the trusted state output variable and the global IO variable value to the upper computer.
The method of the embodiment of the invention separates the task of acquiring the trusted state from the task of acquiring the trusted state value in the real-time task by the controller through the interface program, can ensure that the task of acquiring the trusted state does not influence the real-time task of the controller, maintains the reliability of the operation of the controller in the DCS, and maintains the high timeliness of the real-time task in the controller.
As an alternative, the controller can also arrange and combine the trusted state values in a mode agreed with the upper computer, so that the trusted state values can be finally displayed on the upper computer, and the interactivity of the system is improved.
The present invention will be described in detail with reference to the following examples:
the embodiment provides a method for acquiring a trusted state of a DCS controller in real time, which comprises the following steps:
s1, a tool end transmits a trusted state acquisition item configuration file to a controller;
the trusted state acquisition item configuration file of the tool end is configured with a trusted state acquisition period, trusted state acquisition item information, a trusted state output variable and link information of the trusted state output variable and a global IO variable;
and the controller outputs the corresponding trusted state output variable to the global IO variable according to the link information of the trusted state output variable and the global IO variable in the trusted state acquisition item configuration file. Such as: after the trusted state output value is linked with the global IO variable, the controller fills in the corresponding trusted state output value to the global IO variable according to the linking information.
S2, analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information and link information of a trusted state output variable and a global IO variable.
S3, the controller acquires the current trusted state of the controller through an interface program every fixed period, and stores the trusted state in a corresponding global trusted state variable;
the controller acquires the current trusted state of the controller through an interface program every fixed period, when the controller can successfully acquire the trusted state, the controller stores the trusted state value at a global trusted state variable, and when the controller fails to initialize the trusted state variable or fails to acquire the trusted state, other values different from the trusted state value are assigned to the trusted state variable.
S4, the controller obtains item information according to the obtaining period and the trusted state configured in the item configuration file according to the trusted state of the tool end, and the period takes a value from the global trusted state variable;
according to the trusted state acquisition period and the trusted state acquisition item information which are analyzed when the controller receives the trusted state acquisition item configuration file issued by the tool end, periodically taking values from the global trusted state variable according to the trusted state acquisition item information, carrying out bit combination and arrangement on the trusted state variable according to trusted display agreements of the upper computer and the lower computer, and then giving the values after the bit combination and arrangement to the trusted state output variable in the trusted state acquisition item configuration file.
Wherein the task of acquiring the trusted state and the task of acquiring the trusted state value and assigning the trusted state output variable are performed separately by the interface program.
More specifically, the controller periodically obtains item information according to the analyzed trusted state to take values from global trusted state variables according to the trusted state acquisition period, combines and arranges the global trusted state variables according to trusted display conventions of the upper computer and the lower computer, and then gives the combined and arranged values to corresponding trusted state output variables.
And then the upper computer periodically acquires a trusted state value, which is specifically described as follows:
as an alternative embodiment, according to the link information of the trusted state output variable and the global IO variable in the trusted state acquisition item configuration file, the trusted state output variable is output to the global IO variable according to the trusted state acquisition period, and when the upper computer and the controller request the trusted state related data, the controller packages the trusted state output variable and the global IO variable value in a combined manner and sends the packaged manner to the upper computer for analysis and display by the upper computer.
And arranging and combining the trusted state values of the controller in a mode appointed with the upper computer, and displaying the trusted state values in the upper computer.
As shown in fig. 2, the present invention further provides a system for acquiring the trusted status of the DCS controller in real time, including:
the receiving module is used for receiving the trusted status acquisition item configuration file issued by the tool end;
the analysis module is used for analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information and link information of a trusted state output variable and a global IO variable;
the acquisition module is used for acquiring the current controller trusted state through the interface program every fixed period, assigning values based on the trusted state and storing the trusted state value at a global trusted state variable;
the output module is used for periodically taking values from the global trusted state variables according to the trusted state acquisition item information based on the trusted state acquisition period, carrying out bit combination and arrangement on the trusted state variables according to trusted display conventions with an upper computer, and then giving the values after bit combination and arrangement to the corresponding trusted state output variables; according to the link information relation between the trusted state value and the global IO variable, the trusted state output variable is periodically assigned to the global IO variable; and periodically transmitting the trusted state output variable and the global IO variable value to the upper computer.
As shown in fig. 3, the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor, where the processor implements the method for acquiring the trusted status of the DCS controller in real time when executing the computer program.
The DCS controller trusted state real-time acquisition method comprises the following steps:
s1, receiving a trusted state acquisition item configuration file issued by a tool end;
s2, analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information, and link information of a trusted state output variable and a global IO variable;
s3, acquiring the current controller trusted state through an interface program every fixed period, assigning values based on the trusted state, and storing the trusted state value at a global trusted state variable;
s4, based on the trusted state acquisition period, periodically acquiring item information according to the trusted state, taking a value from a global trusted state variable, combining and arranging the trusted state variable according to trusted display convention with an upper computer, and then giving the value after the bit combination and arrangement to a corresponding trusted state output variable; according to the link information relation between the trusted state value and the global IO variable, the trusted state output variable is periodically assigned to the global IO variable; and periodically transmitting the trusted state output variable and the global IO variable value to the upper computer.
The invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program realizes the method for acquiring the trusted state of the DCS controller in real time when being executed by a processor.
The DCS controller trusted state real-time acquisition method comprises the following steps:
s1, receiving a trusted state acquisition item configuration file issued by a tool end;
s2, analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information, and link information of a trusted state output variable and a global IO variable;
s3, acquiring the current controller trusted state through an interface program every fixed period, assigning values based on the trusted state, and storing the trusted state value at a global trusted state variable;
s4, based on the trusted state acquisition period, periodically acquiring item information according to the trusted state, taking a value from a global trusted state variable, combining and arranging the trusted state variable according to trusted display convention with an upper computer, and then giving the value after the bit combination and arrangement to a corresponding trusted state output variable; according to the link information relation between the trusted state value and the global IO variable, the trusted state output variable is periodically assigned to the global IO variable; and periodically transmitting the trusted state output variable and the global IO variable value to the upper computer.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (8)
1. The method for acquiring the trusted state of the DCS controller in real time is characterized by comprising the following steps of:
receiving a trusted status acquisition item configuration file issued by a tool end;
analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information, and link information of a trusted state output variable and a global IO variable;
acquiring the current controller trusted state through an interface program every fixed period, assigning a value based on the trusted state, and storing the trusted state value at a global trusted state variable;
based on the trusted state acquisition period, periodically taking values from the global trusted state variables according to the trusted state acquisition item information, carrying out bit combination and arrangement on the trusted state variables according to trusted display conventions with an upper computer, and then giving the values after bit combination and arrangement to corresponding trusted state output variables; according to the link information relation between the trusted state value and the global IO variable, the trusted state output variable is periodically assigned to the global IO variable; periodically sending a trusted state output variable and a global IO variable value to an upper computer;
the method comprises the steps that a current controller trusted state is obtained through an interface program every fixed period, assignment is conducted based on the trusted state, and a trusted state value is stored in a global trusted state variable; comprising the following steps:
the controller acquires the trusted state acquisition item information through an interface program every fixed period, determines the current trusted state of the controller through the trusted state acquisition item information, assigns a trusted state variable when the controller can successfully acquire the trusted state, and stores a trusted state value at a global trusted state variable;
the determining the current trusted state of the controller through the trusted state acquisition item information further comprises:
when the controller fails to initialize the trusted state variable or fails to acquire the trusted state, the trusted state variable is assigned other values than the trusted state value.
2. The method for acquiring the trusted status of the DCS controller in real time according to claim 1, wherein the tool side configures the trusted status acquisition period and configures the trusted status acquisition item information, and links the trusted status output value with the global IO variable.
3. The method for acquiring the trusted status of the DCS controller in real time according to claim 2, wherein the tool side links the trusted status value with the global IO variable, and outputs the corresponding trusted status output value to the global IO variable according to the link information.
4. The method for acquiring the trusted status of the DCS controller in real time according to claim 1, wherein the periodically sending the trusted status output variable and the global IO variable to the host computer is by combining and packaging the trusted status output variable and the global IO variable and sending the combined trusted status output variable and the global IO variable to the host computer.
5. The method for acquiring the trusted status of the DCS controller in real time according to claim 4, wherein the sending to the host computer is for the host computer to analyze and display, wherein the host computer analyzes and displays:
and arranging and combining the trusted state values of the controller in a mode appointed with the upper computer, and displaying the trusted state values in the upper computer.
6. A DCS controller trusted status real-time acquisition system, based on the DCS controller trusted status real-time acquisition method of any one of claims 1 to 5, comprising:
the receiving module is used for receiving the trusted status acquisition item configuration file issued by the tool end;
the analysis module is used for analyzing the trusted state acquisition item configuration file to obtain a trusted state acquisition period, trusted state acquisition item information and link information of a trusted state output variable and a global IO variable;
the acquisition module is used for acquiring the current controller trusted state through the interface program every fixed period, assigning values based on the trusted state and storing the trusted state value at a global trusted state variable;
the output module is used for periodically taking values from the global trusted state variables according to the trusted state acquisition item information based on the trusted state acquisition period, carrying out bit combination and arrangement on the trusted state variables according to trusted display conventions with an upper computer, and then giving the values after bit combination and arrangement to the corresponding trusted state output variables; according to the link information relation between the trusted state value and the global IO variable, the trusted state output variable is periodically assigned to the global IO variable; and periodically transmitting the trusted state output variable and the global IO variable value to the upper computer.
7. An electronic device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the DCS controller trusted state real-time acquisition method of any one of claims 1 to 5 when the computer program is executed.
8. A computer readable storage medium, characterized in that the computer readable storage medium stores a computer program, which when executed by a processor implements the DCS controller trusted status real-time acquisition method of any one of claims 1 to 5.
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