CN106249632A - A kind of preferred module for nuclear power plant's I&C system - Google Patents
A kind of preferred module for nuclear power plant's I&C system Download PDFInfo
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- CN106249632A CN106249632A CN201610843666.2A CN201610843666A CN106249632A CN 106249632 A CN106249632 A CN 106249632A CN 201610843666 A CN201610843666 A CN 201610843666A CN 106249632 A CN106249632 A CN 106249632A
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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
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Abstract
The invention discloses a kind of preferred module for nuclear power plant's I&C system, priority judge module exports to controlled plant after selecting priority supreme command, the instruction of described device drives includes at least 2 group instructions, described priority judge module is by the hard logic circuit formed with door or door, not gate, and this hard logic circuit is output as AnAnd Bn, AnAnd BnMeet following logical operations formula: A1=a1；B1=(‑a1)&b1；An=An‑1+ [(B n‑1) &an]；Bn=Bn‑1+ [(A n‑1) &(an) &bn]；Wherein, AnThe highest the closing of priority for output instructs, BnPriority for output the highest opens instruction ,+represent or logic, representing NOT logic, & represents and logic, and n is more than or equal to 2, a1Represent the pass instruction in the 1st group of instruction, b1Represent the 1st group instruction in open instruction, anRepresent the pass instruction in n-th group instruction, bnRepresent n-th group instruction in open instruction.
Description
Technical field
The present invention relates to belong to nuclear power plant's I&C system field, a kind of excellent for nuclear power plant's I&C system
Modeling block.
Background technology
Priority control module is an important component part of npp safety level instrument control platform, is mainly used in driving specially
If the equipment such as safety devices and the pump of relevant support system, valve.The driving signal of driving means can be given by multiple systems, in order to
It is abnormal that conflict between anti-stop signal causes driving means action to occur, needs priority control module to judge signal,
Determine that driving means is according to correct signal execution action.Priority control module provide not only the control to the equipment of driving and connects
Mouthful, in addition it is also necessary to autocommand, the manual command of different safety class is carried out priority processing, drives life according to priority output
Order.
For driving the priority management of signal.At present, the most generally use with CPLD, FPGA or ARM as core
Board.Owing to CPLD, FPGA or ARM internal logic is complex, it is possible that exist anticipated less than fault, it is difficult to meet
The reliability of nuclear power needs.
Summary of the invention
It is an object of the invention to: for overcoming disadvantages mentioned above, the design uses the preferred module that logic-based gate circuit is built,
Achieve the management to the priority class of traffic, and can be according to prioritization logic output drive signal, this method on the one hand can be real
Existing priority management；On the other hand because using hard logic to build module, reliability and safety all than existing based on compiling
The preferred module of journey logical device is high.
The present invention is achieved through the following technical solutions: a kind of preferred module for nuclear power plant's I&C system, including receiving
The priority judge module of device drives instruction, after described priority judge module selects priority supreme command, output is the most controlled
Equipment, described device drives instructs and includes at least 2 groups instructions, and often group instruction is divided into pass instruction and opens instruction, and it is excellent that n-th group instructs
First level is less than the priority of (n-1)th group of instruction, and described priority judge module is by the hard logic formed with door or door, not gate
Circuit, this hard logic circuit is output as AnAnd Bn, AnAnd BnSatisfied following logical operations formula:
A1=a1；
B1=(-a1)&b1；
An=An-1+[(-Bn-1)&an]；
Bn=Bn-1+[(-An-1)&(-an)&bn]；
Wherein, AnThe highest the closing of priority for output instructs, BnPriority for output the highest opens instruction ,+represent or patrol
Volume ,-representing NOT logic, & represents and logic, and n is more than or equal to 2, a1Represent the pass instruction in the 1st group of instruction, b1Represent that the 1st group refers to
Order opens instruction, anRepresent the pass instruction in n-th group instruction, bnRepresent n-th group instruction in open instruction.
Priority judge module: be used for receiving multiple control command, and the order received according to priority logic interfacing is entered
Row processes, the order that output priority is the highest.
The hard logic circuit using above-mentioned logical operations formula to set up can realize the output of following priority: n-th group refers to
The priority of order is less than the priority of (n-1)th group of instruction, with closing instruction and the priority opened between instruction according to wiring in group
Depending on situation.And the hard logic circuit set up according to above-mentioned logical operations formula is formed by with door or door, not gate, completely full
While the above-mentioned priority concerns mandate of foot, it is to avoid the use of CPLD, FPGA or ARM, the probability of failure pole of hard logic circuit
The low reliability needs that can meet nuclear power.Preferred module based on the present invention, it is possible to achieve preferred function, and logical gate
Employing hard logic is built, and reliability is higher than traditional module built based on CPLD, FPGA or ARM, it is possible to through safety certification
The certification of mechanism.
With in group close instruction and the priority opened between instruction according to wiring condition depending on, concrete, can be to close to refer to
The priority of order is higher than the priority opening instruction, it is also possible to be out the priority closing instruction that the priority of instruction is higher than.
Present invention additionally comprises an input block, an output unit, priority judge module is received by input block
Device drives instructs, and priority judge module passes through output unit output priority supreme command to controlled plant.Input block
For receiving the instruction of multiple device drives, the instruction of these device drives may be from different equipment, in power plant, device drives
Instruction potentially includes the autocommand from master control room, manual command, from emergency control panel, the order of back-up disk, from many
Control command on the spot etc. in the order of sample sexual system and equipment.Prioritization logic processing unit uses hard logic to build, its
Function, according to the priority pre-set, selects the order that priority is the highest to send from multiple orders that input block receives
To output module.Output unit is for output drive command such as equipment such as valve, pump etc. downstream.
As a modification of the present invention, the present invention can also arrange the switch of locking output, is used for making output invalid.For
Prevent maloperation, latch switch can be set.Latch switch can be arranged in master control room, it is also possible to is arranged on preferred module
On rack or board, it is also possible to latch switch is all set on master control room, rack and board simultaneously.
As a modification of the present invention, the power supply of preferred module can be provided by outside, it is also possible to module carries.
As a modification of the present invention, preferred module outfan is in addition to drive command exports, it is also possible to have order to feed back
With fault feedback function, order feedback is for the output result of superior feedback priority level judge module, and fault feedback is for just
The feedback often broken down under running status.
As a modification of the present invention, preferred module can arrange LED light, for indicating module work shape
State, duty includes power supply status, I/O channel state, blocking etc..
As a modification of the present invention, preferred module can use redundancy structure, i.e. prioritization logic processing unit to adopt
With two or more, it is to avoid caused module unavailable by single failure.
The instruction of described often group is by entering priority judge module after light-coupled isolation.
The instruction of described device drives is the device drives instruction of nuclear power plant's I&C system, and the instruction of this device drives includes nuclear power
Factory owner is controlled the autocommand of room, manual command, the order of emergency control panel, the order of back-up disk, the order of diversity systems, is set
Standby upper control command on the spot.
Illustrate:
As follows according to the hard logic circuit that above-mentioned logical operations formula obtains: when n is 2, described device drives instruction bag
Including the 1st group of instruction and the 2nd group of instruction, the 1st group of instruction is divided into a1And b1, the 2nd group of instruction is divided into a2And b2, a1、a2For closing instruction,
b1、b2For opening instruction, its priority orders is followed successively by a from high to low1、b1、a2、b2；Hard logic circuit is output as A2And B2, its
Middle a1Directly output result is A1, a1Enter non-output-a behind the door1,-a1Same b1Enter and export B behind the door1, B1Enter non-the most defeated
Go out-B1,-B1Same a2Enter and export the same A of P1, P1 behind the door1A is exported after entering or door2, A1Enter non-output-A behind the door1, a2Enter
Non-output-a behind the door2,-A1With-a2Enter and export the same b of P2, P2 behind the door2Enter and export the same B of P3, P3 behind the door1After entering or door
Output B2。
Also include order back propagation unit, for returning the output result of priority judge module.Described order back propagation unit
For connecting a wire of higher level equipment.
The quantity of described priority judge module is 2, and 2 priority judge modules are defeated after selecting priority supreme command
Go out to gate or output to or gate after export to controlled plant.
Apparatus of the present invention advantage: preferred module based on the present invention, it is possible to achieve preferred function, and logical gate employing
Hard logic is built, and reliability is higher than traditional module built based on CPLD, FPGA or ARM, it is possible to through safety certification mechanism
Certification.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present system schematic diagram.
Fig. 2 is the embodiment of the present invention 2 hard logic electrical block diagram.
Fig. 3 is the embodiment of the present invention 3 hard logic electrical block diagram.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Figure 1-Figure 3: a kind of preferred module for nuclear power plant's I&C system, including receiving device drives instruction
Priority judge module, described priority judge module exports to controlled plant after selecting priority supreme command, described equipment
Driving instruction includes at least 2 group instructions, and often group instruction is divided into pass instruction and opens instruction, and the priority of n-th group instruction is less than (n-1)th
The priority of group instruction, with closing instruction priority higher than with the instruction of opening in group in group, described priority judge module be by
With door or door, the hard logic circuit of not gate composition, this hard logic circuit is output as AnAnd Bn, AnAnd BnMeet following logic fortune
Calculation formula:
A1=a1；
B1=(-a1)&b1；
An=An-1+[(-Bn-1)&an]；
Bn=Bn-1+[(-An-1)&(-an)&bn]；
Wherein, AnThe highest the closing of priority for output instructs, BnPriority for output the highest opens instruction ,+represent or patrol
Volume ,-representing NOT logic, & represents and logic, and n is more than or equal to 2, a1Represent the pass instruction in the 1st group of instruction, b1Represent that the 1st group refers to
Order opens instruction, anRepresent the pass instruction in n-th group instruction, bnRepresent n-th group instruction in open instruction.
Priority judge module: be used for receiving multiple control command, and the order received according to priority logic interfacing is entered
Row processes, the order that output priority is the highest.
The hard logic circuit using above-mentioned logical operations formula to set up can realize the output of following priority: n-th group refers to
The priority of order is less than the priority of (n-1)th group of instruction, with closing instruction priority higher than with opening instruction in group in group.And press
The hard logic circuit set up according to above-mentioned logical operations formula is formed by with door or door, not gate completely, closes meeting above-mentioned priority
While system requires, it is to avoid the use of CPLD, FPGA or ARM, the probability of failure of hard logic circuit is extremely low can meet nuclear power
Reliability need.Preferred module based on the present invention, it is possible to achieve preferred function, and logical gate use hard logic take
Building, reliability is higher than traditional module built based on CPLD, FPGA or ARM, it is possible to the through safety certification certification of mechanism.
Present invention additionally comprises an input block, an output unit, priority judge module is received by input block
Device drives instructs, and priority judge module passes through output unit output priority supreme command to controlled plant.Input block
For receiving the instruction of multiple device drives, the instruction of these device drives may be from different equipment, in power plant, device drives
Instruction potentially includes the autocommand from master control room, manual command, from emergency control panel, the order of back-up disk, from many
Control command on the spot etc. in the order of sample sexual system and equipment.Prioritization logic processing unit uses hard logic to build, its
Function, according to the priority pre-set, selects the order that priority is the highest to send from multiple orders that input block receives
To output module.Output unit is for output drive command such as equipment such as valve, pump etc. downstream.
As a modification of the present invention, the present invention can also arrange the switch of locking output, is used for making output invalid.For
Prevent maloperation, latch switch can be set.Latch switch can be arranged in master control room, it is also possible to is arranged on preferred module
On rack or board, it is also possible to latch switch is all set on master control room, rack and board simultaneously.
As a modification of the present invention, the power supply of preferred module can be provided by outside, it is also possible to module carries.
As a modification of the present invention, preferred module outfan is in addition to drive command exports, it is also possible to have order to feed back
Feeding back with fault, order feedback feeds back routine test result for superior, and fault feedback occurs under normal operating condition
The feedback of fault.
As a modification of the present invention, preferred module can arrange LED light, for indicating module work shape
State, duty includes power supply status, I/O channel state, blocking etc..
As a modification of the present invention, preferred module can use redundancy structure, i.e. input block and prioritization logic
Processing unit all uses two or more, it is to avoid caused module unavailable by single failure.
The instruction of described often group is by entering priority judge module after light-coupled isolation.
The instruction of described device drives is the device drives instruction of nuclear power plant's I&C system, and the instruction of this device drives includes nuclear power
Factory owner is controlled the autocommand of room, manual command, the order of emergency control panel, the order of back-up disk, the order of diversity systems, is set
Standby upper control command on the spot.
Also include order back propagation unit, for returning the output result of priority judge module.
The quantity of described priority judge module is 2, and 2 priority judge modules are defeated after selecting priority supreme command
Go out to gate or output to or gate after export to controlled plant.
As those skilled in the art, more than may be configured as with organizing in instruction, close instruction and the priority opened between instruction
Depending on wiring condition, in the present embodiment, close the priority of instruction higher than the priority opening instruction.
Embodiment 2
As in figure 2 it is shown, the present embodiment gives a kind of concrete implementation mode on the basis of embodiment 1: according to enforcement
The hard logic circuit that the logical operations formula that example 1 provides obtains is as follows: when n is 2, and the instruction of described device drives includes the 1st group
Instruction and the 2nd group of instruction, the 1st group of instruction is divided into a1And b1, the 2nd group of instruction is divided into a2And b2, a1、a2For closing instruction, b1、b2For opening
Instruction, its priority orders is followed successively by a from high to low1、b1、a2、b2；Hard logic circuit is output as A2And B2, wherein a1Directly
Output result is A1, a1Enter non-output-a behind the door1,-a1Same b1Enter and export B behind the door1, B1Enter non-output-B behind the door1,-B1
Same a2Enter and export the same A of P1, P1 behind the door1A is exported after entering or door2, A1Enter non-output-A behind the door1, a2Enter non-the most defeated
Go out-a2,-A1With-a2Enter and export the same b of P2, P2 behind the door2Enter and export the same B of P3, P3 behind the door1B is exported after entering or door2。
Preferred module receives the driving instruction of 2 equipment, is input to preferential after the instruction received is carried out light-coupled isolation
Level judge module, the instruction that output priority is the highest after priority judge module selects, and energy superior feedback status information,
Routine test result and self diagnosis result etc..Priviledge module includes the priority judge module of two redundancies, and priority judges mould
Block is the core of preferred board, the signal of input carries out priority and divides the output finally making correspondence, logic true value
Table such as table 1.
Table 1 prioritization logic unit truth table
Note: the corresponding output in " 1 ", " 0 " logic, " X " represents free position.Its medium priority successively decreases by order 1-2, OFF signal
Priority is higher than ON signal.
In the present embodiment, it is the situation of two groups of instruction inputs, A during output2And B2, a during input1And b1、a2And b2, above-mentioned
Logic gates can realize priority orders and be followed successively by a from high to low1、b1、a2、b2Output.
Embodiment 3
As it is shown on figure 3, the present embodiment is the situation of three groups of instruction inputs, A during output3And B3, a during input1And b1、a2With
b2、a3And b3, the present embodiment only adds one group of input on the basis of embodiment 2, and principle is consistent with embodiment 2, and circuit is tied
Structure is not as it can be seen, repeating at this, and this logic gates can realize priority orders and be followed successively by a from high to low1、b1、a2、
b2、a3And b3Output.
Preferred module receives the driving instruction of three equipment, is input to preferential after the instruction received is carried out light-coupled isolation
Level judge module, the instruction that output priority is the highest after priority selects module to select, and energy superior feedback status information,
Routine test result and self diagnosis result etc..Priviledge module includes that the priority of two redundancies selects module, and priority selects mould
Block is the core of preferred board, the signal of input carries out priority and divides the output finally making correspondence, logic true value
Table such as table 2.
Table 2 prioritization logic unit truth table
Note: the corresponding output in " 1 ", " 0 " logic, " X " represents free position.Its medium priority successively decreases by order 1-6, OFF signal
Priority is higher than ON signal.
Preferred module is an important component part of npp safety level instrument control platform, is mainly used in driving ad hoc safety
The equipment such as facility and the pump of relevant support system, valve.The driving means (such as valve, main pump motor etc.) being positioned at actuating station needs root
The driving signal sent according to system performs corresponding function.
The driving signal of driving means can be given by multiple systems, in order to the conflict between anti-stop signal causes driving means
Action occurs abnormal, needs priority control module to judge signal, determines that driving means performs according to correct signal
Action.Its control interface that provide not only the equipment of driving, is also carried out autocommand, the manual command of different safety class
Priority processing, with the requirement of completion system function.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (6)
1. the preferred module for nuclear power plant's I&C system, it is characterised in that include receiving the preferential of device drives instruction
Level judge module, described priority judge module exports to controlled plant after selecting priority supreme command, described device drives
Instruction includes at least 2 group instructions, and often group instruction is divided into pass instruction and opens instruction, and the priority of n-th group instruction refers to less than (n-1)th group
The priority of order, described priority judge module is by the hard logic circuit formed with door or door, not gate, this hard logic circuit
It is output as AnAnd Bn, AnAnd BnSatisfied following logical operations formula:
A1=a1；
B1=(-a1)&b1；
An=An-1+[(-Bn-1)&an]；
Bn=Bn-1+[(-An-1)&(-an)&bn]；
Wherein, AnThe highest the closing of priority for output instructs, BnPriority for output the highest opens instruction ,+represent or logic ,-table
Showing that NOT logic, & represent and logic, n is more than or equal to 2, a1Represent the pass instruction in the 1st group of instruction, b1Represent in the 1st group of instruction
Open instruction, anRepresent the pass instruction in n-th group instruction, bnRepresent n-th group instruction in open instruction.
A kind of preferred module for nuclear power plant's I&C system the most according to claim 1, it is characterised in that described often group
Instruct by entering priority judge module after light-coupled isolation.
A kind of preferred module for nuclear power plant's I&C system the most according to claim 1, it is characterised in that described equipment
Driving instruction is the device drives instruction of nuclear power plant's I&C system, and the instruction of this device drives includes the automatic life of master-control room of nuclear power plant
Make, the order of manual command, emergency control panel, the order of back-up disk, the order of diversity systems, the life of control on the spot on equipment
Order.
4. according to a kind of preferred module for nuclear power plant's I&C system described in any one in claim 1-3, its feature
Being, when n is 2, the instruction of described device drives includes the 1st group of instruction and the 2nd group of instruction, and the 1st group of instruction is divided into a1And b1, the
2 groups of instructions are divided into a2And b2, a1、a2For closing instruction, b1、b2For opening instruction, its priority orders is followed successively by a from high to low1、b1、
a2、b2；Hard logic circuit is output as A2And B2, wherein a1Directly output result is A1, a1Enter non-output-a behind the door1,-a1With
b1Enter and export B behind the door1, B1Enter non-output-B behind the door1,-B1Same a2Enter and export the same A of P1, P1 behind the door1After entering or door
Output A2, A1Enter non-output-A behind the door1, a2Enter non-output-a behind the door2,-A1With-a2Enter and export the same b2 of P2, P2 behind the door
Enter and export output B2 after P3, P3 enter or door with B1 behind the door.
5. according to a kind of preferred module for nuclear power plant's I&C system described in any one in claim 1-3, its feature
It is, also includes order back propagation unit, for returning the output result of priority judge module.
6. according to a kind of preferred module for nuclear power plant's I&C system described in any one in claim 1-3, its feature
Being, the quantity of described priority judge module is 2, and 2 priority judge modules export after selecting priority supreme command
To with gate or output to or gate after export to controlled plant.
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Effective date of registration: 20201217 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 |