CN110597223A - Method for monitoring state of communication unit of distributed control system of nuclear power station and related product - Google Patents
Method for monitoring state of communication unit of distributed control system of nuclear power station and related product Download PDFInfo
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- CN110597223A CN110597223A CN201910806232.9A CN201910806232A CN110597223A CN 110597223 A CN110597223 A CN 110597223A CN 201910806232 A CN201910806232 A CN 201910806232A CN 110597223 A CN110597223 A CN 110597223A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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Abstract
The application relates to a method for monitoring the state of a communication unit of a distributed control system of a nuclear power station and a related product. The method comprises the following steps: acquiring a main pulse detection signal on a main operation column of a gateway; acquiring a secondary pulse detection signal on a standby operation row of a gateway; respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain fault judgment results of each row; wherein the fault detection operation comprises: shunting a signal to be detected to obtain a first branch signal and a second branch signal; carrying out delay processing on the first branch signal to obtain a first delay signal; carrying out non-operation on the second branch signal and then carrying out delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected. The method can improve the stability of the system running state.
Description
Technical Field
The application relates to the technical field of computers, in particular to a method for monitoring the state of a communication unit of a distributed control system of a nuclear power station and a related product.
Background
With the development of computer technology, gateway communication is widely used in daily life and production of people. Taking a digital control system of a nuclear power station as an example, the system comprises a safety-level digital control system and a non-safety-level digital control system, and a gateway is adopted for communication between the two systems.
Usually, in the process of communication by using gateways, two columns of gateways are set, wherein one column is used as a main operation line and the other column is used as a standby operation line, and when the main operation line fails, the standby operation line is used for communication. In the using process, the communication state of the gateway is monitored to ensure the normal work of the gateway. In the conventional technology, an analog quantity point of gateway communication of a safety-level digital control system and a non-safety-level digital control system is usually selected for monitoring, and when the analog quantity point is unchanged for more than 5 seconds, the gateway communication is abnormal at the moment, so that data cannot be updated in time.
Therefore, the traditional gateway communication state monitoring method can only monitor the final operation state of the actual communication of the gateway, so that the communication can be interrupted only when two rows of gateways have communication faults, the alarm effect can be realized at the moment, the situation that the communication between the safety-level digital control system and the non-safety-level digital control system is completely lost exists, and the operation of the unit is unstable.
Disclosure of Invention
In view of the above, it is necessary to provide a method and an apparatus for monitoring the state of a communication unit of a distributed control system of a nuclear power plant, a computer device, and a storage medium, which can improve the stability of the operating state of the system.
In a first aspect, an embodiment of the present application provides a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant, where the method includes:
acquiring a main pulse detection signal on a main operation column of the gateway; the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not;
acquiring a secondary pulse detection signal on a standby operation row of the gateway; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not;
respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain fault judgment results of each row;
wherein the fault detection operation comprises: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
In one embodiment, the acquiring a master pulse detection signal on a master run queue of the gateway includes:
executing a main pulse generating logic to generate the main pulse detection signal, and storing the main pulse detection signal in a first address bit of the main operation line through a first main cache region of the main operation line;
and calling a main acquisition logic on the main operation row, and acquiring the main pulse detection signal stored in the first address bit through a second main cache region of the main operation row.
In one embodiment, the acquiring the secondary pulse detection signal on the standby train of the gateway includes:
executing a secondary pulse generating logic to generate the secondary pulse detection signal, and storing the secondary pulse detection signal in a second address bit of the standby operation row through a first buffer area of the standby operation row;
and calling secondary acquisition logic on the standby operation row and obtaining the secondary pulse detection signal stored in the second address bit through a second secondary cache region of the standby operation row.
In one embodiment, the invoking the secondary capture logic on the standby rank to obtain the secondary pulse detection signal stored on the second address bit through the second secondary cache region of the standby rank includes:
executing constant signal generation logic to generate constant signals of the main operation line;
generating a fault bit identification signal according to the constant signal;
and when the quality bit in the fault bit identification signal is a first preset value, calling secondary acquisition logic on the standby operation row, and acquiring the secondary pulse detection signal stored on the second address bit through a second cache region of the standby operation row.
In one embodiment, the method further comprises:
and triggering an alarm when the fault judgment result is a fault.
In a second aspect, an embodiment of the present application provides a device for monitoring a state of a communication unit of a distributed control system of a nuclear power plant, where the device includes a processing module;
the processing module is used for acquiring a main pulse detection signal on a main operation column of the gateway, acquiring a secondary pulse detection signal on a standby operation column of the gateway, and respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain a fault judgment result of each column;
the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not; the fault detection operation includes: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
In one embodiment, the apparatus further comprises: the device comprises a main pulse generating module and a main collecting module;
the main pulse generating module is used for executing main pulse generating logic to generate the main pulse detection signal, and storing the main pulse detection signal in a first address bit of the main operation line through a first main cache region of the main operation line;
and the main acquisition module is used for calling main acquisition logic on the main operation row and acquiring the main pulse detection signal stored in the first address bit through a second main cache region of the main operation row.
In one embodiment, the apparatus further comprises: the secondary pulse generating module and the secondary acquisition module;
the secondary pulse generating module is used for executing secondary pulse generating logic to generate the secondary pulse detection signal, and storing the secondary pulse detection signal in the second address bit through a first secondary cache region of the standby operation row;
and the secondary acquisition module is used for calling secondary acquisition logic on the standby row and column and acquiring the secondary pulse detection signal stored on the second address bit through a second cache region of the standby row and column.
In one embodiment, the secondary acquisition module is configured to execute constant signal generation logic to generate a constant signal of the primary operation column, generate a fault bit identification signal according to the constant signal, call secondary acquisition logic on the standby operation column when a quality bit in the fault bit identification signal is a first preset value, and obtain the secondary pulse detection signal stored in the second address bit through a second cache region of the standby operation column.
In one embodiment, the apparatus further comprises:
and the alarm module is used for triggering alarm when the fault judgment result is a fault.
In a third aspect, an embodiment of the present application provides a computer device, including a memory and a processor, where the memory stores a computer program, and the processor implements the following steps when executing the computer program:
acquiring a main pulse detection signal on a main operation column of the gateway; the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not;
acquiring a secondary pulse detection signal on a standby operation row of the gateway; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not;
respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain fault judgment results of each row;
wherein the fault detection operation comprises: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the following steps:
acquiring a main pulse detection signal on a main operation column of the gateway; the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not;
acquiring a secondary pulse detection signal on a standby operation row of the gateway; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not;
respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain fault judgment results of each row;
wherein the fault detection operation comprises: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
According to the method, the device, the computer equipment and the storage medium for monitoring the state of the communication unit of the distributed control system of the nuclear power station, the fault judgment result of each row is obtained by acquiring the primary pulse detection signal on the primary operation row of the gateway and the secondary pulse detection signal on the standby operation row of the gateway and respectively executing the fault detection operation on the primary pulse detection signal and the secondary pulse detection signal, so that the fault condition of the operation row with the fault can be timely acquired when any one row of the primary operation row and the standby operation row has the fault. The fault detection operation comprises the steps of carrying out shunting on a signal to be detected to obtain a first branch signal and a second branch signal; carrying out delay processing on the first branch signal to obtain a first delay signal; carrying out non-operation on the second branch signal and then carrying out delay processing to obtain a second delay signal; the first delay signal and the second delay signal are taken or operated to obtain the fault judgment result of the signal to be detected, therefore, the situation that the final operation state of actual communication of the gateway can only be monitored in the traditional technology is avoided, the alarm is given out only when the main operation line and the standby operation line fail, the unstable operation of the system is caused, and then the fault judgment result of the communication state and the operation state of each line can be timely maintained, the normal communication of the gateway is greatly ensured, and the stability of the operation state of the system is greatly improved.
Drawings
FIG. 1 is a diagram of a system architecture in which a method for monitoring the status of communication units in a distributed control system of a nuclear power plant is implemented according to an embodiment;
fig. 2 is a schematic flow chart of a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant according to an embodiment;
fig. 3 is a schematic flowchart of a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant according to another embodiment;
fig. 4 is a schematic flowchart of a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant according to another embodiment;
fig. 5 is a schematic flowchart of a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant according to another embodiment;
fig. 6 is a schematic flowchart of a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant according to another embodiment;
fig. 7 is a schematic structural block diagram of a communication unit state monitoring apparatus of a distributed control system of a nuclear power plant according to an embodiment;
fig. 8 is a schematic structural diagram of a communication unit state monitoring apparatus of a distributed control system of a nuclear power plant according to another embodiment;
fig. 9 is a schematic structural diagram of a communication unit status monitoring apparatus of a distributed control system of a nuclear power plant according to yet another embodiment;
FIG. 10 is a schematic flow diagram of signals in one embodiment;
FIG. 11 is a schematic flow chart of signals in another embodiment;
FIG. 12 is a diagram illustrating an internal structure of a computer device according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The method for monitoring the state of the communication unit of the distributed control system of the nuclear power plant, provided by the embodiment of the application, can be applied to the system shown in fig. 1. As shown in fig. 1, in a general Distributed Control System (DCS), a TELEPERM XP, i.e., a TXP platform (a non-security digital control system), may be used for a non-security DCS, a TELEPERM XS, i.e., a TXS platform (a security digital control system), and a gateway is used for data communication between the two systems. The gateway uses two columns of gateways, a column a and a column B for communication, each of which includes a SEPC1(TXS Embedded PC, an Embedded personal computer of a security level DCS, i.e., gateway) and a CM104 (a gateway). The communication between CM104 and SEPC1 adopts MODBUS ON TCP (a communication protocol between gateways), and CM104 serves as a master station for MODBUS communication. Normally, the gateway in column a may operate as a primary gateway and the gateway in column B may operate as a backup gateway. Of course, it is not limited which of the a column and the B column is used as the master gateway.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.
It should be noted that the execution subject of the method embodiments described below may be a state monitoring device of a communication unit of a distributed control system of a nuclear power plant, and the device may be implemented as part or all of the above system or computer equipment by software, hardware, or a combination of software and hardware. In the following method embodiments, the execution subject is a state monitoring device of a communication unit of a distributed control system of a nuclear power plant as an example.
Fig. 2 is a schematic flow chart of a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant according to an embodiment. The embodiment relates to a process of fault judgment of each row of gateways by a communication unit state monitoring device of a distributed control system of a nuclear power station. As shown in fig. 2, the method includes:
s102, acquiring a main pulse detection signal on a main operation column of the gateway; the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not.
Specifically, the state monitoring device of the communication unit of the distributed control system of the nuclear power station can acquire a main pulse detection signal on a main operation column through an acquisition module arranged on the state monitoring device. Alternatively, the main pulse detection signal may be a main pulse detection signal transmitted by another module, or the main pulse detection signal may be read at a preset address bit, which is not limited in this embodiment. The main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not, so that at least one of the communication state and the operation state of the main operation row is represented to be abnormal under the condition that the main pulse detection signal is abnormal, and the communication state and the operation state of the main operation row are represented to be normal under the condition that the main pulse detection signal is normal. It should be noted that the communication state fault may be a fault caused by a communication path, and represents whether the communication path is smooth; the fault of the running state may be a fault of hardware such as a signal source of the device, and the table indicates whether the signal processing by each hardware on the path is normal or not, and the two are different.
S104, acquiring a secondary pulse detection signal on a standby operation row of the gateway; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not.
Specifically, the state monitoring device of the communication unit of the distributed control system of the nuclear power station can acquire the secondary pulse detection signals on the spare operation line through the acquisition module arranged on the state monitoring device. Alternatively, the sub-pulse detection signal may be a sub-pulse detection signal transmitted by another module, or a sub-pulse detection signal may be read at a preset address bit, which is not limited in this embodiment. The secondary pulse detection signal is used for representing whether the communication state and the operation state of the standby operation row are normal or not, so that at least one of the communication state and the operation state of the standby operation row is represented to be abnormal under the condition that the secondary pulse detection signal is abnormal, and the communication state and the operation state of the standby operation row are represented to be normal under the condition that the secondary pulse detection signal is normal.
S106, respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain fault judgment results of each row; wherein the fault detection operation comprises: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
Specifically, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant may perform the fault detection operation on the primary pulse detection signal and the secondary pulse detection signal, so as to obtain the fault determination results of the primary operation line and the secondary operation line, respectively. Since the above-described failure detection operation includes: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected, so that the communication state and the running state of the gateway can be monitored simultaneously. For example, a main pulse detection signal is collected, and the period change information of the main pulse detection signal is acquired, and whether the main operation line has a fault or not is judged according to the period change information. Optionally, when there is a periodic variation in the main pulse detection signal, it is determined that the main operation line has not failed, and when there is no periodic variation in the main pulse detection signal, it is determined that the main operation line has failed.
Specifically, taking a main operation column as an example, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant divides the main pulse detection signal into two paths to obtain a first main branch signal and a second main branch signal. It should be noted that the first main branch signal and the second main branch signal are two paths of signals with the same characteristics, the first main branch signal is subjected to delay processing, when a main operation line has a fault, the pulse detection signal stops changing and becomes a signal of constant 0 or constant 1, and the pulse detection signal which stops changing is subjected to delay processing, and a first main delay signal of constant 1 is output. Meanwhile, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant carries out delay processing on a second main branch signal, when a main operation line has a fault, the pulse detection signal stops changing, no matter the signal is changed into a signal of a constant 0 or a constant 1, a second main delay signal of a constant 1 can be obtained, and then the first main delay signal and the second main delay signal are subjected to OR operation, namely when any one of the first main delay signal and the second main delay signal is 1, the fault judgment result of the main operation line is a fault, and when the first main delay signal and the second main delay signal are both 0, the fault judgment result of the main operation line is normal. It should be noted that, no matter the communication state of the main operation line is abnormal or the operation state is abnormal, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant can determine that the main operation line fails at this time by the above method. The process of the fault detection operation of the secondary pulse detection signal is identical to that of the primary pulse detection signal, and is not described herein again.
In this embodiment, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant obtains the fault determination result of each row by obtaining the primary pulse detection signal on the primary operation row of the gateway and obtaining the secondary pulse detection signal on the standby operation row of the gateway, and performing the fault detection operation on the primary pulse detection signal and the secondary pulse detection signal respectively, so that when any one of the primary operation row and the standby operation row fails, the fault condition of the failed operation row can be obtained in time. The fault detection operation comprises the steps of carrying out shunting on a signal to be detected to obtain a first branch signal and a second branch signal; carrying out delay processing on the first branch signal to obtain a first delay signal; carrying out non-operation on the second branch signal and then carrying out delay processing to obtain a second delay signal; the first delay signal and the second delay signal are taken or operated to obtain the fault judgment result of the signal to be detected, therefore, the situation that the final operation state of actual communication of the gateway can only be monitored in the traditional technology is avoided, the alarm is given out only when the main operation line and the standby operation line fail, the unstable operation of the system is caused, and then the fault judgment result of the communication state and the operation state of each line can be timely maintained, the normal communication of the gateway is greatly ensured, and the stability of the operation state of the system is greatly improved.
Fig. 3 is a schematic flowchart of a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant according to another embodiment. The embodiment relates to a specific process of acquiring a main pulse detection signal on a main operation column of a gateway by a communication unit state monitoring device of a distributed control system of a nuclear power station. Optionally, on the basis of the foregoing embodiment, as shown in fig. 3, step S102 may specifically include:
s202, executing a main pulse generating logic to generate the main pulse detection signal, and storing the main pulse detection signal in a first address bit of the main operation row through a first main cache region of the main operation row.
Specifically, the device for monitoring the state of the communication unit of the distributed control system of the nuclear power plant can execute a master pulse generation logic, such as a pulse signal generator, to generate a master pulse detection signal according to a preset period and amplitude, and send the master pulse detection signal to the first master buffer area through the first master buffer area of the master operation line, and then send the master pulse detection signal to the first address bit of the master operation line through the first master buffer area, where optionally, the first address bit of the master operation line may be a 2886 address of modbus.
S204, calling a main acquisition logic on the main operation row, and acquiring the main pulse detection signal stored in the first address bit through a second main cache region of the main operation row.
Specifically, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant can call a main acquisition logic, such as bt.cm, on the main operation line, and read a main pulse detection signal on a first address bit through a second cache region between the main acquisition logic and the first address bit. The main pulse detection signal is transmitted through the first buffer area and the second buffer area.
In this embodiment, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant may execute a main pulse generation logic to generate a main pulse detection signal, store the main pulse detection signal in a first address bit of a main operation line through a first main buffer area of the main operation line, then call a main acquisition logic on the main operation line, and obtain the main pulse detection signal stored in the first address bit of the main operation line through a second main buffer area of the main operation line, thereby obtaining the main pulse detection signal. By adopting the method, the state monitoring device of the communication unit of the distributed control system of the nuclear power station can execute fault detection operation on the main pulse detection signal to obtain the fault judgment result of the main operation line, thereby realizing the fault monitoring of the main operation line, ensuring the normal communication of the gateway, improving the stability of the system operation state, and having simple mode and convenient realization.
Fig. 4 is a schematic flowchart of a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant according to another embodiment. The embodiment relates to a specific process of acquiring a secondary pulse detection signal on a standby train of a gateway by a communication unit state monitoring device of a distributed control system of a nuclear power station. Optionally, on the basis of the foregoing embodiments, as shown in fig. 4, step S104 may specifically include:
s302, executing a secondary pulse generating logic to generate the secondary pulse detection signal, and storing the secondary pulse detection signal in a second address bit of the standby operation row through a first buffer area of the standby operation row.
Specifically, the nuclear power plant distributed control system communication unit state monitoring device can execute secondary pulse generation logic, such as a pulse signal generator, generate a secondary pulse detection signal according to a preset period and amplitude, and send the secondary pulse detection signal to the second address bit of the standby train, and optionally, the first address bit of the main train may be 2888 addresses of modbus.
S304, calling secondary acquisition logic on the standby operation row and obtaining the secondary pulse detection signal stored in the second address bit of the standby operation row through the second cache region of the standby operation row.
Specifically, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant can call secondary acquisition logic, such as bt.cm, on the standby row, and read a secondary pulse detection signal on a second address bit for a second cache region between the secondary acquisition logic and the second address.
Optionally, a possible implementation manner of the step S304 may be as shown in fig. 5, and includes:
s402, executing constant signal generating logic to generate constant signals of the main operation line.
Specifically, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant executes the constant signal generating logic, so as to generate the constant signal of the main operation line, for example, the constant signal may be "1" or "0".
And S404, generating a fault bit identification signal according to the constant signal.
Specifically, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant may divide the constant signal into two paths, input the two paths to a Fault Status Forcing Block (FSFB) logic, and generate a Fault bit identification signal matched with the constant signal through the FSFB, where the Fault bit identification signal has a quality bit. For example, when the constant signal is "1", a fault bit identification signal with a quality bit of 1 is generated; if the constant signal is "0", a failure bit identification signal with a quality bit of 0 is generated.
S406, when the quality bit in the fault bit identification signal is a first preset value, calling a secondary acquisition logic on the standby operation row, and acquiring the secondary pulse detection signal stored in a second address bit of the standby operation row through a second cache region of the standby operation row.
Specifically, when the quality bit in the fault bit identification signal is a first preset value, the first preset value may be "1", and the state monitoring device of the communication unit of the nuclear power plant distributed control system may invoke a secondary acquisition logic on the standby train, so as to obtain a secondary pulse detection signal stored in a second address bit of the standby train through a second buffer area of the standby train.
In this embodiment, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant may execute the constant signal generation logic to generate the constant signal of the main operation line, generate the fault bit identification signal according to the constant signal, call the secondary acquisition logic of the standby operation line when the quality bit in the fault bit identification signal is the first preset value, and obtain the secondary pulse detection signal stored in the second address bit of the standby operation line through the second buffer area of the standby operation line. By adopting the method, the state monitoring device of the communication unit of the distributed control system of the nuclear power station can acquire the secondary pulse detection signal of the standby operation line according to the generated constant signal, further realize the fault detection operation of the secondary pulse detection signal and obtain the fault judgment result of the standby operation line, thereby realizing the fault monitoring of the standby operation line, ensuring the normal communication of the gateway, improving the stability of the system operation state, and having simple mode and convenient realization.
In the embodiment shown in fig. 4, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant executes the secondary pulse generation logic to generate the secondary pulse detection signal, and stores the secondary pulse detection signal in the second address bit of the standby operation row, and then invokes the secondary acquisition logic on the standby operation row, and obtains the secondary pulse detection signal stored in the second address bit of the standby operation row through the second buffer area of the standby operation row, so that the fault detection operation can be executed on the secondary pulse detection signal, and the fault judgment result of the standby operation row is obtained, thereby realizing the fault monitoring of the standby operation row, ensuring the normal communication of the gateway, improving the stability of the system operation state, and having a simple mode and being convenient for implementation.
In one embodiment, the method further comprises: and triggering an alarm when the fault judgment result is a fault. Specifically, when the fault determination result of the main operation line or the standby operation line is a fault, the state monitoring device of the communication unit of the distributed control system of the nuclear power plant triggers an alarm, for example, a process alarm, that is, an RPA900KA (an alarm code) is triggered to perform a fault alarm.
In order to facilitate understanding of those skilled in the art, the following describes a method for monitoring a state of a communication unit of a distributed control system of a nuclear power plant in detail, where as shown in fig. 6, the method may include:
s602, executing a main pulse generating logic to generate the main pulse detection signal, and storing the main pulse detection signal in a first address bit of the main operation row through a first main cache region of the main operation row.
S604, calling a main acquisition logic on the main operation row, and acquiring the main pulse detection signal stored in the first address bit through a second main cache region of the main operation row.
S606, executing a secondary pulse generating logic to generate the secondary pulse detection signal, and storing the secondary pulse detection signal in a second address bit of the standby operation column.
S608, executing constant signal generating logic to generate constant signals of the main operation line.
And S610, generating a fault bit identification signal according to the constant signal.
S612, when the quality bit in the fault bit identification signal is a first preset value, calling a secondary acquisition logic on the standby operation row, and acquiring the secondary pulse detection signal stored in the second address bit through a second cache region of the standby operation row.
And S614, triggering an alarm when the fault judgment result is a fault.
The working principle and technical effect of the method for monitoring the state of the communication unit of the distributed control system of the nuclear power plant according to this embodiment are as described in the above embodiments, and are not described herein again.
It should be understood that although the various steps in the flow charts of fig. 2-6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-6 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 7, there is provided a device for monitoring the status of a communication unit of a distributed control system of a nuclear power plant, including: a processing module 702.
Specifically, the processing module 702 is configured to obtain a primary pulse detection signal on a primary operation column of the gateway, obtain a secondary pulse detection signal on a standby operation column of the gateway, and perform a fault detection operation on the primary pulse detection signal and the secondary pulse detection signal respectively to obtain a fault determination result of each column; the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not; the fault detection operation includes: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
In an embodiment, on the basis of the embodiment shown in fig. 7, optionally, as shown in fig. 8, the apparatus may further include: a main pulse generation module 704 and a main acquisition module 706.
Specifically, the main pulse generating module 704 is configured to execute a main pulse generating logic to generate the main pulse detection signal, and store the main pulse detection signal in the first address bit of the main operation column through the first main buffer of the main operation column.
A primary acquisition module 706, configured to invoke primary acquisition logic on the primary operation row, and obtain the primary pulse detection signal stored in the first address bit through a second primary cache region of the primary operation row.
In an embodiment, based on the above-mentioned embodiments, with continuing reference to fig. 8, the apparatus may further include: a secondary pulse generation module 708 and a secondary acquisition module 710;
specifically, the sub-pulse generating module 708 is configured to execute a sub-pulse generating logic to generate the sub-pulse detection signal, and store the sub-pulse detection signal in the second address bit through the first buffer of the standby row.
And a secondary acquisition module 710, configured to invoke secondary acquisition logic on the standby row and column, and obtain the secondary pulse detection signal stored in the second address bit through a second cache region of the standby row and column.
In an embodiment, the secondary acquisition module 710 is specifically configured to execute a constant signal generation logic to generate a constant signal of the primary operation column, generate a fault bit identification signal according to the constant signal, call a secondary acquisition logic on the standby operation column when a quality bit in the fault bit identification signal is a first preset value, and obtain the secondary pulse detection signal stored in the second address bit through a second cache region of the standby operation column.
In an embodiment, on the basis of the above-mentioned embodiments, referring to fig. 9, fig. 9 illustrates an example on the basis of the above-mentioned embodiment of fig. 8, and the apparatus may further include: an alarm module 712.
Specifically, the alarm module 712 is configured to trigger an alarm when the failure determination result is a failure.
For specific limitations of the device for monitoring the state of the communication unit of the distributed control system of the nuclear power plant, reference may be made to the above limitations of the method for monitoring the state of the communication unit of the distributed control system of the nuclear power plant, and details are not described here. All modules in the communication unit state monitoring device of the nuclear power plant distributed control system can be completely or partially realized through software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In an embodiment, the working principle and the signal flow direction in the communication unit status monitoring device of the distributed control system of the nuclear power plant may be as shown in fig. 10 and fig. 11, it should be noted that, the operation line a or the operation line B is taken as a main operation line, and the other line is taken as a standby operation line, which is not limited in the embodiment of the present application.
In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as shown in fig. 12. The computer device includes a processor, a memory, a network interface, and a database connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The database of the computer device is used to store data generated during the processing. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to realize a method for monitoring the state of the communication unit of the distributed control system of the nuclear power station.
Those skilled in the art will appreciate that the architecture shown in fig. 12 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program:
acquiring a main pulse detection signal on a main operation column of the gateway; the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not;
acquiring a secondary pulse detection signal on a standby operation row of the gateway; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not;
respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain fault judgment results of each row;
wherein the fault detection operation comprises: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
executing a main pulse generating logic to generate the main pulse detection signal, and storing the main pulse detection signal in a first address bit of the main operation line through a first main cache region of the main operation line;
and calling a main acquisition logic on the main operation row, and acquiring the main pulse detection signal stored in the first address bit through a second main cache region of the main operation row.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
executing a secondary pulse generating logic to generate the secondary pulse detection signal, and storing the secondary pulse detection signal in a second address bit of the standby operation row through a first buffer area of the standby operation row;
and calling secondary acquisition logic on the standby operation row and obtaining the secondary pulse detection signal stored in the second address bit through a second secondary cache region of the standby operation row.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
executing constant signal generation logic to generate constant signals of the main operation line;
generating a fault bit identification signal according to the constant signal;
and when the quality bit in the fault bit identification signal is a first preset value, calling secondary acquisition logic on the standby operation row, and acquiring the secondary pulse detection signal stored on the second address bit through a second cache region of the standby operation row.
In one embodiment, the processor, when executing the computer program, further performs the steps of:
and triggering an alarm when the fault judgment result is a fault.
It should be clear that, in the embodiments of the present application, the process of executing the computer program by the processor is consistent with the process of executing the steps in the above method, and specific reference may be made to the description above. )
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of:
acquiring a main pulse detection signal on a main operation column of the gateway; the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not;
acquiring a secondary pulse detection signal on a standby operation row of the gateway; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not;
respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain fault judgment results of each row;
wherein the fault detection operation comprises: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
In one embodiment, the computer program when executed by the processor further performs the steps of:
executing a main pulse generating logic to generate the main pulse detection signal, and storing the main pulse detection signal in a first address bit of the main operation line through a first main cache region of the main operation line;
and calling a main acquisition logic on the main operation row, and acquiring the main pulse detection signal stored in the first address bit through a second main cache region of the main operation row.
In one embodiment, the computer program when executed by the processor further performs the steps of:
executing a secondary pulse generating logic to generate the secondary pulse detection signal, and storing the secondary pulse detection signal in a second address bit of the standby operation row through a first buffer area of the standby operation row;
and calling secondary acquisition logic on the standby operation row and obtaining the secondary pulse detection signal stored in the second address bit through a second secondary cache region of the standby operation row.
In one embodiment, the computer program when executed by the processor further performs the steps of:
executing constant signal generation logic to generate constant signals of the main operation line;
generating a fault bit identification signal according to the constant signal;
and when the quality bit in the fault bit identification signal is a first preset value, calling secondary acquisition logic on the standby operation row, and acquiring the secondary pulse detection signal stored on the second address bit through a second cache region of the standby operation row.
In one embodiment, the computer program when executed by the processor further performs the steps of:
and triggering an alarm when the fault judgment result is a fault.
It should be clear that, in the embodiments of the present application, the process of executing the computer program by the processor is consistent with the process of executing the steps in the above method, and specific reference may be made to the description above.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. A method for monitoring the state of a communication unit of a distributed control system of a nuclear power station is characterized by comprising the following steps:
acquiring a main pulse detection signal on a main operation column of the gateway; the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not;
acquiring a secondary pulse detection signal on a standby operation row of the gateway; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not;
respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain fault judgment results of each row;
wherein the fault detection operation comprises: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
2. The method of claim 1, wherein obtaining the primary pulse detection signal on the primary train of the gateway comprises:
executing a main pulse generating logic to generate the main pulse detection signal, and storing the main pulse detection signal in a first address bit of the main operation line through a first main cache region of the main operation line;
and calling a main acquisition logic on the main operation row, and acquiring the main pulse detection signal stored in the first address bit through a second main cache region of the main operation row.
3. The method of claim 1, wherein obtaining the secondary pulse detection signal on the standby train of the gateway comprises:
executing a secondary pulse generating logic to generate the secondary pulse detection signal, and storing the secondary pulse detection signal in a second address bit of the standby operation row through a first buffer area of the standby operation row;
and calling secondary acquisition logic on the standby operation row and obtaining the secondary pulse detection signal stored in the second address bit through a second secondary cache region of the standby operation row.
4. The method of claim 3, wherein said invoking secondary capture logic on said spare row to obtain said secondary pulse detect signal stored on said second address bit via a second cache region of said spare row comprises:
executing constant signal generation logic to generate constant signals of the main operation line;
generating a fault bit identification signal according to the constant signal;
and when the quality bit in the fault bit identification signal is a first preset value, calling secondary acquisition logic on the standby operation row, and acquiring the secondary pulse detection signal stored on the second address bit through a second cache region of the standby operation row.
5. The method of claims 1 to 6, further comprising:
and triggering an alarm when the fault judgment result is a fault.
6. A state monitoring device for a communication unit of a distributed control system of a nuclear power station is characterized by comprising a processing module;
the processing module is used for acquiring a main pulse detection signal on a main operation column of the gateway, acquiring a secondary pulse detection signal on a standby operation column of the gateway, and respectively executing fault detection operation on the main pulse detection signal and the secondary pulse detection signal to obtain a fault judgment result of each column;
the main pulse detection signal is used for representing whether the communication state and the operation state of the main operation row are normal or not; the secondary pulse detection signal is used for representing whether the communication state and the operation state of the secondary operation row are normal or not; the fault detection operation includes: shunting a signal to be detected to obtain a first branch signal and a second branch signal; delaying the first branch signal to obtain a first delayed signal; performing a non-operation on the second branch signal and then performing delay processing to obtain a second delay signal; and executing an OR operation on the first delay signal and the second delay signal to obtain a fault judgment result of the signal to be detected.
7. The apparatus of claim 6, further comprising: the device comprises a main pulse generating module and a main collecting module;
the main pulse generating module is used for executing main pulse generating logic to generate the main pulse detection signal, and storing the main pulse detection signal in a first address bit of the main operation line through a first main cache region of the main operation line;
and the main acquisition module is used for calling main acquisition logic on the main operation row and acquiring the main pulse detection signal stored in the first address bit through a second main cache region of the main operation row.
8. The apparatus of claim 6, further comprising: the secondary pulse generating module and the secondary acquisition module;
the secondary pulse generating module is used for executing secondary pulse generating logic to generate the secondary pulse detection signal, and storing the secondary pulse detection signal in the second address bit through a first secondary cache region of the standby operation row;
and the secondary acquisition module is used for calling secondary acquisition logic on the standby row and column and acquiring the secondary pulse detection signal stored on the second address bit through a second cache region of the standby row and column.
9. The apparatus of claim 8, wherein the secondary acquisition module is configured to execute constant signal generation logic to generate a constant signal of the primary operation column, generate a fault bit identification signal according to the constant signal, and when a quality bit in the fault bit identification signal is a first preset value, invoke secondary acquisition logic on the standby operation column to obtain the secondary pulse detection signal stored in the second address bit through a second buffer of the standby operation column.
10. The apparatus of any one of claims 6 to 9, further comprising:
and the alarm module is used for triggering alarm when the fault judgment result is a fault.
11. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 5 when executing the computer program.
12. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 5.
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| CN112415946A (en) * | 2020-12-01 | 2021-02-26 | 华能鹤岗发电有限公司 | Method and device for monitoring communication state of PLC (programmable logic controller) lower computer |
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| CN112415946A (en) * | 2020-12-01 | 2021-02-26 | 华能鹤岗发电有限公司 | Method and device for monitoring communication state of PLC (programmable logic controller) lower computer |
| CN112415946B (en) * | 2020-12-01 | 2022-07-29 | 华能鹤岗发电有限公司 | Method and device for monitoring communication state of PLC (programmable logic controller) lower computer |
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Application publication date: 20191220 |