CN110308695A - Nuclear safe level preferred module routine test exports blocking diagnostic system and method - Google Patents
Nuclear safe level preferred module routine test exports blocking diagnostic system and method Download PDFInfo
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- CN110308695A CN110308695A CN201910724260.6A CN201910724260A CN110308695A CN 110308695 A CN110308695 A CN 110308695A CN 201910724260 A CN201910724260 A CN 201910724260A CN 110308695 A CN110308695 A CN 110308695A
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- routine test
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- output state
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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
- 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
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Testing And Monitoring For Control Systems (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The invention discloses nuclear safe level preferred module routine test output blocking diagnostic system and method, the present invention includes routine test command signal source, preferred logic controller, driving output state monitoring circuit and routine test blocking diagnostic circuit；The present invention generates diagnostic instruction by routine test command signal source, and the diagnostic instruction is subjected to driving output by preferred logic controller, circuit is monitored by driving output state to be monitored driving output state, and driving output state is sent to routine test blocking diagnostic circuit, it drives output state to judge with before entering routine test the driving output state received by routine test blocking diagnostic circuit, realizes the real-time diagnosis of routine test output blocking.Present invention can assure that the equipment of preferred module control will not malfunction after routine test starts, the reliability and security of routine test is increased.
Description
Technical field
The present invention relates to technical field of nuclear power, and in particular to nuclear safe level preferred module routine test output blocking is examined
Disconnected system and method.
Background technique
Preferred module is a pith of npp safety grade I&C system, is mainly used for driving engineered safeguards features
And the equipment such as pump, valve of related support system.In order to guarantee the security function of safety level I&C system, therefore need in cold-refueling
Or tested during normal operation, test segmentation carries out, and it is overlapped between every section of test, it ensure that the complete of test
Property.It mainly includes the test (T1 test) of Measurement channel, and logic function tests (T2 test), output channel and associated drive
Test (T3 test) and corresponding time test.
The main purpose of preferred module output locking test in T3 test: main control module, digital output module are checked
The transmission of signal is connected and controlled between preferred module, and when test will not trigger driver realistic operation.Its main flow are as follows:
The test is operated from main control dish platform, and test result is fed back in I&C system platform safety display station or field engineering
Teacher station.After main control dish platform has issued preferred module locking order, safe display station or field engineer station receive excellent
After " output has been latched " status signal for selecting module feedback, safe display station could be passed through or field engineer stands and carries out preferably
Module output locking test.So confirming whether preferred module output blocking succeeds in time when carrying out the test, to anti-
Only the equipment malfunctions such as engineered safeguards features and pump, the valve of related support system are of great significance.
Existing preferred module output blocking diagnostic method has:
(1) preferred module directly passes through the preferred module locking order that hardwire receives the sending of main control dish platform, then leads to
Cross network communication feedback " output has been latched " status signal.Because the test instructions at scene passes through safe display station or engineer
Station is issued, therefore this kind of method is unable to the validity that diagnostic network communication passes down link, causes to try after entering blocking
The probability for testing failure increases.
(2) it is stood by safe display station or field engineer and issues network lock up instruction, be issued to by network communication
Preferred module, and the preferred module locking order that main control dish platform issues is issued to preferred module by hardwire, works as network
When instruction and all effective hardwire instruction, then preferred module passes through network communication feedback " output has been latched " status signal to safety
Display station or field engineer station.This kind of method has diagnosed the validity that network communication passes down link, and is referred to by network
Enable instructing with hardwire and take and preferred module is controlled later, effectively overcome above-mentioned first method there are the problem of,
But since preferred module not can confirm that the reliability of the output internal logic of blocking, therefore when preferred module is latched
Failed failure, and output is uploaded after blocking by network communication, once safe display station or field engineering
Teacher station has sent test safety level control instruction, will cause the malfunction of field device.
Therefore, design a kind of preferred module output blocking diagnostic method applied to technical field of nuclear power is to improve
The safety and reliability of system is very important.
Summary of the invention
In order to solve technological deficiency of the existing technology, the present invention provides the nuclear safe level to solve the above problems is preferred
Module routine test exports blocking diagnostic system and method；The present invention can enter routine test output locking in preferred module
It after state, effectively diagnoses whether its driving output is successfully latched, ensure that preferred module enters routine test output latch like
Reliability after state reduces the malfunction rate of system.
The present invention is achieved through the following technical solutions:
Nuclear safe level preferred module routine test exports blocking diagnostic system, which includes that routine test refers to
Enable signal source, preferred logic controller, driving output state monitoring circuit and routine test blocking diagnostic circuit；Work as reception
It is defeated by being driven before the generation of routine test command signal source and entrance routine test to after routine test blocking order
Opposite diagnostic instruction is instructed out, which is subjected to driving output by preferred logic controller, is exported by driving
Status monitor circuit is monitored driving output state, and driving output state is sent to the diagnosis of routine test blocking
Circuit is driven by routine test blocking diagnostic circuit to the driving output state received and before entering routine test
Output state is judged, realizes the real-time diagnosis of routine test output blocking.
Preferably, routine test command signal source uses the preferred logic controller or digital logic device of redundancy
It realizes.
Preferably, the preferred logic controller uses CPLD, FPGA, ARM or chip microcontroller.
Preferably, routine test command signal source uses CPLD, FPGA, ARM, single-chip microcontroller or digital logic device
It realizes.
Preferably, the driving output state monitoring circuit is realized using comparison circuit.
Preferably, the driving output state monitoring circuit is realized using operational amplifier or Schmidt trigger.
Preferably, the routine test blocking diagnostic circuit is realized using CPLD, FPGA or digital logic device.
On the other hand, the invention also provides nuclear safe level preferred module routine tests to export blocking diagnostic method,
Method includes the following steps:
Step 1 generates diagnosis by routine test command signal source and refers to after receiving routine test blocking order
It enables and injects the diagnostic instruction to preferred logic controller, wherein the diagnostic instruction drives output with routine test is entered before
Instruction is opposite；
Step 2 carries out driving output by diagnostic instruction of the preferred logic controller to injection；
Step 3 monitors circuit by driving output state and is monitored to driving output state, and driving is exported shape
State is sent to routine test blocking diagnostic circuit；
Step 4 to the driving output state received and enters periodically examination by routine test blocking diagnostic circuit
Driving output state is judged before testing, and realizes the real-time diagnosis of routine test output blocking.
Preferably, routine test command signal source uses the preferred logic controller or digital logic device of redundancy
It realizes.
Preferably, the preferred logic controller uses CPLD, FPGA, ARM or chip microcontroller.
The present invention has the advantage that and the utility model has the advantages that
The present invention generates diagnostic signal using routine test command signal source, which is passed through preferred logic control
Device drive relay coil processed monitors circuit by driving output state and is monitored to driving output state, utilizes number
Logic circuit or redundancy preferred logic controller can determine whether preferred module output blocking succeeds.
After preferred module receives routine test blocking order, the signal directly by signal source injection drives the present invention
The driving output state kept before output state and locking is judged, just can be carried out the reality of routine test output blocking
When diagnose.
Present invention can assure that the equipment of preferred module control will not malfunction after routine test starts, it is fixed to increase
The reliability and security of phase test.Since the present invention is simply easily achieved, required peripheral components are few, reduce field device mistake
The probability of movement improves safety, reliability and the stability of nuclear power system.The present invention has wide in nuclear power plant's control field
General application prospect.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the principle of the present invention schematic diagram.
Fig. 2 is the schematic diagram of first embodiment of the invention.
Fig. 3 is the schematic diagram of second embodiment of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
The present embodiment proposes nuclear safe level preferred module routine test output blocking diagnostic system.
As shown in Figure 1, the diagnostic system includes routine test command signal source, preferred logic controller, driving output shape
State monitors circuit and routine test blocking diagnostic circuit；After receiving routine test blocking order, by described fixed
Phase test instructions signal source generates the diagnostic instruction opposite with output order is driven before entering routine test, by the diagnostic instruction
Driving output is carried out by preferred logic controller, circuit is monitored by driving output state, driving output state is supervised
Control, and driving output state is sent to routine test blocking diagnostic circuit, electricity is diagnosed by routine test blocking
Road drives output state to judge the driving output state received with before entering routine test, realizes that routine test is defeated
The real-time diagnosis of blocking out.
In the present embodiment, the routine test blocking order is that safe display station or field engineer station are logical by network
Letter is issued to the instruction of preferred module and main control dish platform is taken and reality later by the instruction that hardwire is issued to preferred module
It is existing (to be referred to by safe display station or field engineer station by the routine test locking that network communication is issued to preferred module
It enables, when the routine test blocking order for being issued to preferred module by hardwire with main control dish platform is effective)
In the present embodiment, the preferred logic controller uses CPLD, FPGA, ARM or chip microcontroller.
In the present embodiment, routine test command signal source can select the preferred logic controller of redundancy, can also be with
Using the hardwire of routine test blocking order as triggering, digital logic circuit design signal source is selected.
Specifically, routine test command signal source uses CPLD, FPGA, ARM, single-chip microcontroller or digital logic device
It realizes.
In the present embodiment, the driving output state monitoring circuit is realized using comparison circuit.
Specifically, the driving output state monitoring circuit is realized using operational amplifier or Schmidt trigger.
In the present embodiment, the routine test blocking diagnostic circuit uses CPLD, FPGA or digital logic device
It realizes.
The diagnostic system specific work process of the present embodiment is as follows:
Step 1 generates diagnosis by routine test command signal source and refers to after receiving routine test blocking order
It enables and injects the diagnostic instruction to preferred logic controller, wherein the diagnostic instruction drives output with routine test is entered before
Instruction is opposite；
Step 2 carries out driving output by diagnostic instruction of the preferred logic controller to injection；
Step 3 monitors circuit by driving output state and is monitored to driving output state, and driving is exported shape
State is sent to routine test blocking diagnostic circuit；
Step 4 to the driving output state received and enters periodically examination by routine test blocking diagnostic circuit
Driving output state is judged before testing, and realizes the real-time diagnosis of routine test output blocking.
Specifically, the driving output state kept before the signal driving output state of signal source injection and locking is carried out
Judgement, specific diagnostic result are as shown in the table:
As shown above, output state and signal source is driven to inject order-driven output state before entering routine test
When consistent, then it represents that be latched successfully, otherwise indicate locking failure.
The present embodiment generates diagnostic signal using routine test command signal source, which is passed through preferred logic
Control device drives relay coil, monitors circuit by driving output state and is monitored to driving output state, utilizes number
Word logic circuit or redundancy preferred logic controller can determine whether preferred module output blocking succeeds.
Embodiment 2
Based on the above embodiment 1, the present embodiment proposes another nuclear safe level preferred module routine test output locking
Condition diagnosing system.
As depicted in figs. 1 and 2, the diagnostic system include routine test command signal source, preferred logic controller, driving it is defeated
It does well and monitors circuit and routine test blocking diagnostic circuit.
In the present embodiment, routine test command signal source is realized by redundancy CPLD, the preferred logic controller by
CPLD realizes that the driving output state monitors circuit and realized by comparator, the routine test blocking diagnostic circuit by
Redundancy CPLD is realized.
The driving output control part of the present embodiment is given using triode common emitter connection type by the I/O port of CPLD
Transistor base Injection Current, the Injection Current by triode saturation amplification after, can triode collector to emitter-base bandgap grading it
Between generate one amplification after electric current, the electric current cause relay coil generate magnetic field, so as to the shape to relay contact
State control effectively.
The driving output state monitoring circuit of the present embodiment is realized by comparator, injects ratio by generating a reference level
Compared with the "+" input terminal of device, the collector of triode is connected to the "-" input terminal of comparator, when CPLD driving relay closure
When, when triode saturation conduction, the pressure drop between collector and emitting stage is millivolt step voltage, the high electricity of comparator output at this time
It is flat；When CPLD does not drive relay to be closed, triode is in off state, and impedance is intended to infinite, transistor collector
Pressure drop between emitter is about supply voltage, and comparator exports low level at this time；I.e. comparator outputs level signals indicate
Current driving output state.
The routine test command signal source of the present embodiment is realized by redundancy CPLD, when it collects the output level of comparator
Later, it after which being negated, is injected into inside CPLD, CPLD executes the action command and exported (i.e. by CPLD to fixed
Driving output state instruction before phase test negates, and obtains diagnostic instruction, and be injected into CPLD and carry out driving output).
The routine test blocking diagnostic circuit of the present embodiment realized by redundancy CPLD, using redundancy CPLD to collecting
Routine test before driving output state and inject diagnostic instruction after driving output state (i.e. comparator output level
Signal) it is compared, it can judge whether preferred module output blocking succeeds.
Embodiment 3
Based on the above embodiment 1, the present embodiment has been deducted a percentage another nuclear safe level preferred module routine test output locking
Condition diagnosing system.
As shown in figures 1 and 3, the diagnostic system include routine test command signal source, preferred logic controller, driving it is defeated
It does well and monitors circuit and routine test blocking diagnostic circuit；
In the present embodiment, routine test command signal source is realized by d type flip flop, the preferred logic controller by
CPLD realizes that the driving output state monitors circuit and realized by comparator, the routine test blocking diagnostic circuit by
Digital logic device is realized.
The driving output control part of the present embodiment is given using triode common emitter connection type by the I/O port of CPLD
Transistor base Injection Current, the Injection Current can be generated in its collector between emitter-base bandgap grading by after triode saturation amplification
Electric current after one amplification, the electric current cause relay coil to generate magnetic field, carry out so as to the state to relay contact
Effectively control.
The driving output state monitoring circuit of the present embodiment is made of comparator, injects ratio by generating a reference level
Compared with the "+" input terminal of device, the collector of triode is connected to the "-" input terminal of comparator, when CPLD driving relay closure
When, when triode saturation conduction, the pressure drop between collector and emitting stage is millivolt step voltage, the high electricity of comparator output at this time
It is flat；When CPLD does not drive relay to be closed, triode is in off state, and impedance is intended to infinite, transistor collector
Pressure drop between emitter is about supply voltage, and comparator exports low level at this time.
The routine test command signal source of the present embodiment is realized by d type flip flop, when routine test blocking order by connecing firmly
After line enters the optocoupler acquisition channel of preferred module, optocoupler can generate a rising edge from low level to high level, later
High level state is maintained, can be latched using the rising edge to enable level state of the d type flip flop to its D input pin.This
After its state is negated by d type flip flop afterwards byPin is exported to CPLD, and CPLD executes the action command and exported.
The routine test blocking diagnostic circuit of the present embodiment is realized by XOR gate, compares d type flip flop by XOR gate
Latch mode and CPLD executeComparator output after pin signal, can judge that preferred module exports blocking
Whether succeed.
The embodiment of the present invention generates diagnostic signal using routine test command signal source, which is passed through CPLD
Relay coil is driven, circuit is monitored by driving output state, driving output state is monitored, utilize Digital Logic electricity
Road or CPLD chip can determine whether preferred module output blocking succeeds.The present invention can be effectively reduced the mistake of equipment
Dynamic rate, required peripheral components are few, it is easy to accomplish.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. nuclear safe level preferred module routine test exports blocking diagnostic system, which is characterized in that the diagnostic system includes
Routine test command signal source, preferred logic controller, driving output state monitoring circuit and the diagnosis of routine test blocking
Circuit；After receiving routine test blocking order, is generated by routine test command signal source and enter periodically examination
The opposite diagnostic instruction of driving output order, carries out driving output by preferred logic controller for the diagnostic instruction before testing,
Circuit is monitored by driving output state to be monitored driving output state, and driving output state is sent to routine test
Blocking diagnostic circuit to the driving output state received and is entered regular by routine test blocking diagnostic circuit
Driving output state is judged before test, realizes the real-time diagnosis of routine test output blocking.
2. nuclear safe level preferred module routine test according to claim 1 exports blocking diagnostic system, feature
It is, routine test command signal source is realized using the preferred logic controller or digital logic device of redundancy.
3. nuclear safe level preferred module routine test according to claim 1 exports blocking diagnostic system, feature
It is, the preferred logic controller uses CPLD, FPGA, ARM or chip microcontroller.
4. nuclear safe level preferred module routine test according to claim 3 exports blocking diagnostic system, feature
It is, routine test command signal source is realized using CPLD, FPGA, ARM, single-chip microcontroller or digital logic device.
5. nuclear safe level preferred module routine test according to claim 1 exports blocking diagnostic system, feature
It is, the driving output state monitoring circuit is realized using comparison circuit.
6. nuclear safe level preferred module routine test according to claim 5 exports blocking diagnostic system, feature
It is, the driving output state monitoring circuit is realized using operational amplifier or Schmidt trigger.
7. nuclear safe level preferred module routine test according to claim 1 exports blocking diagnostic system, feature
It is, the routine test blocking diagnostic circuit is realized using CPLD, FPGA or digital logic device.
8. nuclear safe level preferred module routine test exports blocking diagnostic method, which is characterized in that this method includes following
Step:
Step 1 generates diagnostic instruction simultaneously by routine test command signal source after receiving routine test blocking order
The diagnostic instruction is injected to preferred logic controller, wherein the diagnostic instruction drives output order with routine test is entered before
On the contrary；
Step 2 carries out driving output by diagnostic instruction of the preferred logic controller to injection；
Step 3 monitors circuit by driving output state and is monitored to driving output state, and will driving output state hair
Give routine test blocking diagnostic circuit；
Step 4, by routine test blocking diagnostic circuit to the driving output state that receives and enter routine test it
Preceding driving output state is judged, realizes the real-time diagnosis of routine test output blocking.
9. nuclear safe level preferred module routine test according to claim 8 exports blocking diagnostic method, feature
It is, routine test command signal source is realized using the preferred logic controller or digital logic device of redundancy.
10. nuclear safe level preferred module routine test according to claim 8 exports blocking diagnostic method, feature
It is, the preferred logic controller uses CPLD, FPGA, ARM or chip microcontroller.
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| Application Number | Priority Date | Filing Date | Title |
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| 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 |
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| 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 |
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| CN110308695B (en) | 2020-12-22 |
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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 |