CN110308695B - System and method for diagnosing locking state of periodic test output of nuclear safety level optimization module - Google Patents
System and method for diagnosing locking state of periodic test output of nuclear safety level optimization module Download PDFInfo
- Publication number
- CN110308695B CN110308695B CN201910724260.6A CN201910724260A CN110308695B CN 110308695 B CN110308695 B CN 110308695B CN 201910724260 A CN201910724260 A CN 201910724260A CN 110308695 B CN110308695 B CN 110308695B
- Authority
- CN
- China
- Prior art keywords
- periodic test
- state
- instruction
- output
- diagnosis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
- G05B19/0425—Safety, monitoring
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Testing And Monitoring For Control Systems (AREA)
Abstract
The invention discloses a system and a method for diagnosing a periodic test output blocking state of a nuclear safety level optimization module, wherein the system comprises a periodic test instruction signal source, an optimization logic controller, a drive output state monitoring circuit and a periodic test blocking state diagnosing circuit; the invention generates a diagnosis instruction through the periodic test instruction signal source, drives and outputs the diagnosis instruction through the optimized logic controller, monitors the drive output state through the drive output state monitoring circuit, sends the drive output state to the periodic test lockout state diagnosis circuit, and judges the received drive output state and the drive output state before entering the periodic test through the periodic test lockout state diagnosis circuit, thereby realizing the real-time diagnosis of the periodic test output lockout state. The invention can ensure that the equipment controlled by the optimized module does not malfunction after the periodic test is started, thereby increasing the reliability and safety of the periodic test.
Description
Technical Field
The invention relates to the technical field of nuclear power, in particular to a system and a method for diagnosing a locking state of a nuclear safety level optimization module through periodic test output.
Background
The optimized module is an important part of a safety level instrument control system of the nuclear power plant and is mainly used for driving equipment such as pumps, valves and the like of special safety facilities and related support systems. In order to ensure the safety function of the safety level instrument control system, tests are required to be carried out during shutdown and refueling or normal operation, the tests are carried out in sections, and the tests are mutually overlapped, so that the integrity of the tests is ensured. The method mainly comprises a test of a measuring channel (T1 test), a logic function test (T2 test), a test of an output channel and a related driver (T3 test) and a corresponding time test.
The primary purpose of the preferred module output latch-up test in the T3 test is: the connection among the main control module, the digital quantity output module and the optimization module and the transmission of control signals are checked, and the driver cannot be triggered to actually act during testing. The main process comprises the following steps: the test is operated on the main control panel platform, and the test result is fed back to the instrument control system platform safety display station or the field engineer station. After the main control panel platform sends out the locking command of the preferred module, the safety display station or the field engineer station can perform the output locking test of the preferred module through the safety display station or the field engineer station after receiving the output locking state signal fed back by the preferred module. Therefore, whether the output locking state of the optimized module is successful or not is timely confirmed when the test is carried out, and the method has important significance for preventing misoperation of equipment such as pumps, valves and the like of special safety facilities and related support systems.
The existing method for diagnosing the output locking state of the preferred module comprises the following steps:
(1) the preferred module receives the preferred module locking command from the main control panel directly through hard wiring, and then feeds back the locked state signal through network communication. Because the on-site test instruction is issued through the safety display station or the engineer station, the method cannot diagnose the effectiveness of the network communication download link after entering the locking state, and the probability of test failure is increased.
(2) The network locking instruction is sent out through the safety display station or the field engineer station and is issued to the optimal selection module through network communication, the optimal selection module locking instruction sent out by the main control panel platform is issued to the optimal selection module through hard wiring, and when the network instruction and the hard wiring instruction are effective, the optimal selection module feeds back an output locked state signal to the safety display station or the field engineer station through network communication. The method diagnoses the effectiveness of a network communication downlink link, and controls the optimized module after the network command and the hard-wired command are fetched, so that the problems existing in the first method are effectively overcome, but because the optimized module cannot confirm the reliability of the internal logic of the output locked state, when the optimized module has a fault that the locking is unsuccessful and the output locked state is uploaded through the network communication, the misoperation of the field equipment can be caused once the safety display station or the field engineer station sends a test safety level control command.
Therefore, it is necessary to design a preferred module output lockout state diagnosis method applied to the nuclear power technical field to improve the safety and reliability of the system.
Disclosure of Invention
In order to solve the technical defects in the prior art, the invention provides a system and a method for diagnosing the locking state of the periodic test output of the nuclear security level optimization module, which solve the problems; the invention can effectively diagnose whether the drive output of the optimized module is successfully locked or not after the optimized module enters the periodic test output locking state, thereby ensuring the reliability of the optimized module after entering the periodic test output locking state and reducing the misoperation rate of the system.
The invention is realized by the following technical scheme:
the nuclear safety level optimization module periodic test output locking state diagnosis system comprises a periodic test instruction signal source, an optimization logic controller, a drive output state monitoring circuit and a periodic test locking state diagnosis circuit; after a periodic test lockout instruction is received, a diagnosis instruction opposite to a drive output instruction before the periodic test is entered is generated through a periodic test instruction signal source, the diagnosis instruction is driven and output through an optimized logic controller, a drive output state monitoring circuit monitors a drive output state, the drive output state is sent to a periodic test lockout state diagnosis circuit, the received drive output state and the drive output state before the periodic test is entered are judged through the periodic test lockout state diagnosis circuit, and real-time diagnosis of the periodic test output lockout state is achieved.
Preferably, the signal source of the periodic test instruction is implemented by a redundant preferred logic controller or a digital logic device.
Preferably, the preferred logic controller is realized by a CPLD, an FPGA, an ARM or a singlechip.
Preferably, the periodic test instruction signal source is realized by a CPLD, an FPGA, an ARM, a singlechip or a digital logic device.
Preferably, the driving output state monitoring circuit is implemented by a comparison circuit.
Preferably, the driving output state monitoring circuit is implemented by using an operational amplifier or a schmitt trigger.
Preferably, the periodic test lockout state diagnosis circuit is implemented by using a CPLD, an FPGA, or a digital logic device.
In another aspect, the present invention further provides a method for diagnosing a lockout state of a periodic test output of a nuclear security level optimization module, which includes the following steps:
step one, after a periodic test locking instruction is received, generating a diagnosis instruction through a periodic test instruction signal source and injecting the diagnosis instruction into a preferred logic controller, wherein the diagnosis instruction is opposite to a driving output instruction before entering a periodic test;
step two, the injected diagnosis instruction is driven and output through a preferred logic controller;
monitoring the driving output state through a driving output state monitoring circuit, and sending the driving output state to a test locking state diagnosis circuit in a given period;
and step four, judging the received drive output state and the drive output state before entering the periodic test by the periodic test locking state diagnosis circuit, and realizing the real-time diagnosis of the periodic test output locking state.
Preferably, the signal source of the periodic test instruction is implemented by a redundant preferred logic controller or a digital logic device.
Preferably, the preferred logic controller is realized by a CPLD, an FPGA, an ARM or a singlechip.
The invention has the following advantages and beneficial effects:
the invention utilizes a periodic test instruction signal source to generate a signal for diagnosis, the signal drives a relay coil through a preferred logic control device, the driving output state is monitored through a driving output state monitoring circuit, and whether the output locking state of a preferred module is successful or not can be judged by utilizing a digital logic circuit or a redundant preferred logic controller.
According to the invention, after the optimized module receives the periodic test locking instruction, the signal drive output state injected by the signal source and the drive output state kept before locking are directly judged, so that the real-time diagnosis of the periodic test output locking state can be carried out.
The invention can ensure that the equipment controlled by the optimized module does not malfunction after the periodic test is started, thereby increasing the reliability and safety of the periodic test. The invention is simple and easy to realize, needs few peripheral devices, reduces the probability of field equipment misoperation, and improves the safety, reliability and stability of the nuclear power system. The invention has wide application prospect in the field of nuclear power plant control.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic diagram of the principle of the present invention.
Fig. 2 is a schematic diagram of a first embodiment of the present invention.
Fig. 3 is a schematic diagram of a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The embodiment provides a system for diagnosing the locking state of the periodic test output of the nuclear safety level optimization module.
As shown in fig. 1, the diagnostic system includes a periodic test command signal source, a preferred logic controller, a drive output status monitoring circuit, and a periodic test latch-up status diagnostic circuit; after a periodic test lockout instruction is received, a diagnosis instruction opposite to a drive output instruction before the periodic test is entered is generated through a periodic test instruction signal source, the diagnosis instruction is driven and output through an optimized logic controller, a drive output state monitoring circuit monitors a drive output state, the drive output state is sent to a periodic test lockout state diagnosis circuit, the received drive output state and the drive output state before the periodic test is entered are judged through the periodic test lockout state diagnosis circuit, and real-time diagnosis of the periodic test output lockout state is achieved.
In this embodiment, the periodic test locking instruction is an instruction issued to the preferred module by the security display station or the site engineer station through network communication and an instruction issued to the preferred module by the main console through hard wiring before being taken and implemented (that is, the periodic test locking instruction issued to the preferred module by the security display station or the site engineer station through network communication and the periodic test locking instruction issued to the preferred module by the main console through hard wiring are both effective)
In this embodiment, the preferred logic controller is implemented by using a CPLD, an FPGA, an ARM, or a single chip microcomputer.
In this embodiment, the signal source of the periodic test instruction may adopt a redundant preferred logic controller, or may adopt a digital logic circuit design signal source by using a hard wire of the periodic test latching instruction as a trigger.
Specifically, the periodic test instruction signal source is implemented by a CPLD, an FPGA, an ARM, a single chip microcomputer or a digital logic device.
In this embodiment, the driving output state monitoring circuit is implemented by using a comparison circuit.
Specifically, the driving output state monitoring circuit is implemented by using an operational amplifier or a schmitt trigger.
In this embodiment, the periodic test lockout state diagnosis circuit is implemented by using a CPLD, an FPGA, or a digital logic device.
The diagnostic system of the embodiment specifically works as follows:
step one, after a periodic test locking instruction is received, generating a diagnosis instruction through a periodic test instruction signal source and injecting the diagnosis instruction into a preferred logic controller, wherein the diagnosis instruction is opposite to a driving output instruction before entering a periodic test;
step two, the injected diagnosis instruction is driven and output through a preferred logic controller;
monitoring the driving output state through a driving output state monitoring circuit, and sending the driving output state to a test locking state diagnosis circuit in a given period;
and step four, judging the received drive output state and the drive output state before entering the periodic test by the periodic test locking state diagnosis circuit, and realizing the real-time diagnosis of the periodic test output locking state.
Specifically, the driving output state of the signal injected by the signal source and the driving output state maintained before latching are determined, and the specific diagnosis result is shown in the following table:
as shown in the above table, when the driving output state before entering the periodic test is consistent with the signal source injection command driving output state, the latch-up is successful, otherwise, the latch-up is failed.
In the embodiment, a signal for diagnosis is generated by using a periodic test instruction signal source, the signal drives a relay coil through a preferred logic control device, a drive output state monitoring circuit monitors the drive output state, and whether the output locking state of a preferred module is successful or not can be judged by using a digital logic circuit or a redundant preferred logic controller.
Example 2
Based on the above embodiment 1, this embodiment proposes another system for diagnosing the locked state of the periodic test output of the preferred module of the nuclear security level.
As shown in fig. 1 and 2, the diagnostic system includes a source of periodic test command signals, a preferred logic controller, a drive output status monitoring circuit, and a periodic test latch-up status diagnostic circuit.
In this embodiment, the periodic test instruction signal source is implemented by a redundant CPLD, the preferred logic controller is implemented by a CPLD, the driving output state monitoring circuit is implemented by a comparator, and the periodic test latching state diagnosis circuit is implemented by a redundant CPLD.
The drive output control part of the embodiment utilizes a triode common emitter connection mode to inject current into the base electrode of the triode through the IO port of the CPLD, after the injected current is saturated and amplified by the triode, amplified current can be generated between the collector electrode and the emitter electrode of the triode, and the current causes the relay coil to generate a magnetic field, so that the state of the relay contact can be effectively controlled.
The driving output state monitoring circuit of the embodiment is realized by a comparator, a reference level is generated and injected into a plus input end of the comparator, a collector of a triode is connected to a minus input end of the comparator, when a CPLD driving relay is closed and the triode is in saturated conduction, the voltage drop between the collector and an emitter is millivolt level voltage, and at the moment, the comparator outputs a high level; when the CPLD does not drive the relay to be closed, the triode is in a cut-off state, the impedance of the triode tends to be infinite, the voltage drop between the collector and the emitter of the triode is about the power supply voltage, and the comparator outputs a low level at the moment; i.e. the comparator output level signal represents the current drive output state.
The signal source of the periodic test command in this embodiment is implemented by a redundant CPLD, and after the output level of the comparator is acquired, the level is inverted and then injected into the CPLD, and the CPLD executes the action command for output (that is, the CPLD inverts the drive output state command before the periodic test to obtain a diagnostic command and injects the diagnostic command into the CPLD for drive output).
The periodic test lockout state diagnosis circuit of the embodiment is realized by the redundant CPLD, and whether the output lockout state of the preferred module is successful or not can be judged by comparing the acquired drive output state before the periodic test with the drive output state (namely, the output level signal of the comparator) after the diagnosis instruction is injected by using the redundant CPLD.
Example 3
Based on the above embodiment 1, this embodiment provides another system for diagnosing the locked state of the periodic test output of the preferred module of the nuclear security level.
As shown in fig. 1 and 3, the diagnostic system includes a periodic test command signal source, a preferred logic controller, a drive output status monitoring circuit, and a periodic test latch-up status diagnostic circuit;
in this embodiment, the signal source of the periodic test instruction is implemented by a D flip-flop, the preferred logic controller is implemented by a CPLD, the driving output state monitoring circuit is implemented by a comparator, and the periodic test latching state diagnosis circuit is implemented by a digital logic device.
The drive output control part of the embodiment utilizes a triode common emitter connection mode to inject current into the base electrode of the triode through the IO port of the CPLD, after the injected current is saturated and amplified by the triode, amplified current is generated between the collector and the emitter of the triode, and the current causes the relay coil to generate a magnetic field, so that the state of the relay contact can be effectively controlled.
The driving output state monitoring circuit of the embodiment is composed of a comparator, a reference level is generated and injected into a plus input end of the comparator, a collector electrode of a triode is connected to a minus input end of the comparator, when a CPLD driving relay is closed and the triode is in saturated conduction, the voltage drop between the collector electrode and an emitter electrode of the triode is millivolt level voltage, and at the moment, the comparator outputs a high level; when the CPLD does not drive the relay to be closed, the triode is in a cut-off state, the impedance of the triode tends to be infinite, the voltage drop between the collector and the emitter of the triode is about the power voltage, and at the moment, the comparator outputs a low level.
The signal source of the periodic test instruction of the embodiment is realized by a D trigger, after the periodic test latching instruction enters the optical coupler acquisition channel of the preferred module through hard wiring, the optical coupler can generate a rising edge from a low level to a high level, then the high level state is maintained, and the rising edge can enable the D trigger to latch the level state of the D input pin of the D trigger. After which its state is inverted by the D flip-flop and then by
The pin is output to the inside of the CPLD, and the CPLD executes the action command to output.
The circuit for diagnosing the latch state of the periodic test of the embodiment is realized by an exclusive-or gate, and the latch state of a D trigger is compared with the execution of a CPLD through the exclusive-or gate
The comparator output after the pin signal can judge whether the output locking state of the preferred module is successful.
The embodiment of the invention utilizes a periodic test instruction signal source to generate a signal for diagnosis, the signal drives a relay coil through the CPLD, the driving output state monitoring circuit monitors the driving output state, and the digital logic circuit or the CPLD chip can be utilized to judge whether the output locking state of the optimized module is successful. The invention can effectively reduce the misoperation rate of equipment, needs few peripheral devices and is easy to realize.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application 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 application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The system is characterized by comprising a periodic test instruction signal source, a preferred logic controller, a drive output state monitoring circuit and a periodic test lockout state diagnostic circuit; after a periodic test lockout instruction is received, a diagnosis instruction opposite to a drive output instruction before the periodic test is entered is generated through a periodic test instruction signal source, the diagnosis instruction is driven and output through an optimized logic controller, a drive output state monitoring circuit monitors a drive output state, the drive output state is sent to a periodic test lockout state diagnosis circuit, the received drive output state and the drive output state before the periodic test is entered are judged through the periodic test lockout state diagnosis circuit, and real-time diagnosis of the periodic test output lockout state is achieved.
2. The system of claim 1, wherein the periodic test command signal source is implemented using redundant preferred logic controllers or digital logic devices.
3. The system for diagnosing the periodic test output locking state of the nuclear safety level optimization module according to claim 1, wherein the optimization logic controller is implemented by a CPLD, an FPGA, an ARM or a single chip microcomputer.
4. The system for diagnosing the periodic test output locking state of the nuclear safety level optimization module according to claim 3, wherein the periodic test instruction signal source is implemented by a CPLD, an FPGA, an ARM, a single chip microcomputer or a digital logic device.
5. The system of claim 1, wherein the driver output condition monitoring circuit is implemented using a comparator circuit.
6. The system of claim 5, wherein the drive output condition monitoring circuit is implemented using an operational amplifier or a Schmitt trigger.
7. The system for diagnosing the periodic test output lockout condition of the nuclear safety level preference module according to claim 1, wherein the periodic test lockout condition diagnostic circuit is implemented by a CPLD, an FPGA, or a digital logic device.
8. The method for diagnosing the locking state of the periodic test output of the nuclear safety level optimization module is characterized by comprising the following steps of:
step one, after a periodic test locking instruction is received, generating a diagnosis instruction through a periodic test instruction signal source and injecting the diagnosis instruction into a preferred logic controller, wherein the diagnosis instruction is opposite to a driving output instruction before entering a periodic test;
step two, the injected diagnosis instruction is driven and output through a preferred logic controller;
monitoring the driving output state through a driving output state monitoring circuit, and sending the driving output state to a test locking state diagnosis circuit in a given period;
and step four, judging the received drive output state and the drive output state before entering the periodic test by the periodic test locking state diagnosis circuit, and realizing the real-time diagnosis of the periodic test output locking state.
9. The method as claimed in claim 8, wherein the periodic test instruction signal source is implemented by redundant preferred logic controllers or digital logic devices.
10. The method for diagnosing the periodic test output locking state of the nuclear safety level optimization module according to claim 8, wherein the optimization logic controller is implemented by a CPLD, an FPGA, an ARM or a single chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910724260.6A CN110308695B (en) | 2019-08-07 | 2019-08-07 | System and method for diagnosing locking state of periodic test output of nuclear safety level optimization module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910724260.6A CN110308695B (en) | 2019-08-07 | 2019-08-07 | System and method for diagnosing locking state of periodic test output of nuclear safety level optimization module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110308695A CN110308695A (en) | 2019-10-08 |
| CN110308695B true CN110308695B (en) | 2020-12-22 |
Family
ID=68083201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910724260.6A Active CN110308695B (en) | 2019-08-07 | 2019-08-07 | System and method for diagnosing locking state of periodic test output of nuclear safety level optimization module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110308695B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110673565A (en) * | 2019-10-23 | 2020-01-10 | 中国核动力研究设计院 | Output lockout test device and test method suitable for safety-level DCS (distributed control System) |
| CN114035423A (en) * | 2021-11-04 | 2022-02-11 | 北京广利核***工程有限公司 | Priority drive management system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1124728A (en) * | 1997-07-02 | 1999-01-29 | Hitachi Ltd | Plant state predicting device |
| CN202736505U (en) * | 2012-05-24 | 2013-02-13 | 中国核动力研究设计院 | Testing apparatus for driver in periodic test of reactor protection system |
| CN103794255B (en) * | 2012-10-31 | 2017-08-04 | 中国广核集团有限公司 | A kind of nuclear power plant reactor protection system T3 test loops and its optimization method |
| CN104409123B (en) * | 2014-11-15 | 2017-06-16 | 北京广利核***工程有限公司 | A kind of nuclear power station priority management system |
| CN108387790A (en) * | 2017-08-29 | 2018-08-10 | 苏州华电电气技术服务有限公司 | A kind of electric testing device of intelligent conversion hookup |
| CN109254250B (en) * | 2018-09-29 | 2021-04-13 | 中广核工程有限公司 | Factory power supply switching experimental method in cold state function test stage of nuclear power station primary loop |
-
2019
- 2019-08-07 CN CN201910724260.6A patent/CN110308695B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110308695A (en) | 2019-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110308695B (en) | System and method for diagnosing locking state of periodic test output of nuclear safety level optimization module | |
| CN107884672B (en) | Periodic test method for nuclear power plant reactor protection system connection loop | |
| US8418012B2 (en) | Method of analyzing the safety of a device employing on target hardware description language based fault injection | |
| CN105185413A (en) | Automatic verification platform and method for on-chip memory management unit fault-tolerant structure | |
| CN102571498A (en) | Fault injection control method and device | |
| CN110347143B (en) | Nuclear safety level optimization module field drive output loop diagnosis system and method | |
| US20240220845A1 (en) | Devices and method for monitoring a quantum computer in operation | |
| CN113572576B (en) | Sampling data verification method and device, relay protection device and storage medium | |
| CN108958997B (en) | Serial bus fault simulation system and simulation method | |
| CN111552584B (en) | Testing system, method and device for satellite primary fault diagnosis isolation and recovery function | |
| KR102269546B1 (en) | Apparatus for fault injection | |
| CN111914497B (en) | DSP core module fault recovery method | |
| CN105137474B (en) | A kind of routine test method for source range neutron detector power supply control function | |
| CN114074697A (en) | Fep simulator, industrial personal computer and rail transit comprehensive monitoring simulation system | |
| CN112130486A (en) | Intelligent outlet module of power relay protection equipment and fault-tolerant control method thereof | |
| CN108519891B (en) | Nuclear power station equipment structure optimization device and processing method | |
| CN110995061B (en) | Linkage control method for realizing automatic starting of power-off and power-on of motor equipment | |
| CN109739774A (en) | EDAC direct fault location and detection method | |
| CN108418699B (en) | Communication point-to-point system and method for substation automation equipment | |
| CN110673565A (en) | Output lockout test device and test method suitable for safety-level DCS (distributed control System) | |
| CN105335177A (en) | Test method, test device and test system of embedded system | |
| CN105676981A (en) | Reset circuit, working method and reset method | |
| Xie et al. | Research on periodic test scheme of safety digital control system for nuclear power plant | |
| CN116754931A (en) | Self-checking method and self-checking circuit for digital input loop | |
| JP7512763B2 (en) | FIRMWARE TESTING APPARATUS, FIRMWARE TESTING METHOD, AND FIRMWARE TESTING PROGRAM |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201225 Address after: No.3, Hongda South Road, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: CHINA NUCLEAR CONTROL SYSTEM ENGINEERING Co.,Ltd. Address before: 610000, No. three, 28 south section of Ring Road, Chengdu, Sichuan Patentee before: NUCLEAR POWER INSTITUTE OF CHINA |
|
| TR01 | Transfer of patent right |