CN102420020A - Digital safety interlocking system of magnetic confinement nuclear fusion experimental device - Google Patents
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Abstract
The invention relates to a magnetic confinement nuclear fusion experimental device, in particular to a digital safety interlocking system of the magnetic confinement nuclear fusion experimental device. The invention relates to a digital safety interlocking system of a magnetic confinement nuclear fusion experimental device, which comprises a circuit: the microcontroller module at least comprises a Flash memory and an Ethernet interface circuit and is responsible for detecting the real-time state of each safety interlocking subsystem of the nuclear fusion experimental device, storing fault log information of the safety interlocking subsystems and carrying out network communication; the programmable logic circuit module is electrically connected with the microcontroller module and each subsystem of the nuclear fusion experimental device, at least comprises an input logic and register, a control logic circuit, an output register and a buffer register read-write control circuit, is realized by adopting a Programmable Logic Device (PLD), and is responsible for acquiring the running state and fault signals of each safety interlocking subsystem of the nuclear fusion experimental device and processing the signals; and the power supply module is used for supplying power to the system. The invention is applied to the safety interlocking protection and on-line monitoring of the magnetic confinement nuclear fusion experimental device.
Description
Technical field
The present invention relates to the magnetic confinement nuclear fusion experimental provision, relate in particular to the digital safety interlocking system of magnetic confinement nuclear fusion experimental provision.
Background technology
Safety interlock system is the important component part of large-scale magnetic confinement nuclear fusion experimental provision (as: tokamak device, stellarator etc.) control system.The safety interlock system of magnetic confinement nuclear fusion experimental provision comprises security system and interlocking system; Between each sub-systems, set up the joint-action mechanism of protection system and fault handling; Farthest prevent and avoid risk, ensure the safe operation of magnetic confinement nuclear fusion experimental provision and carrying out smoothly of experiment.The main task of safety interlock system is to coordinate the protection logical relation of each safety interlocking subsystem of nuclear fusion experimental device (like water-cooling system, vacuum system, cryogenic system etc.); Confirm the protection logic of safety interlock system reply failure risk, unification provides the person, device and safety of environment protection.
The safety interlock system of existing magnetic confinement nuclear fusion experimental provision generally makes up with the mode that programmable logic controller (PLC) (PLC) or industrial control computer add the interface board card.For example people such as Sun Xiao sun, Luo Jiarong, Ji Zhenshan, Wu Yichun roll up the 4th aspire to the article of delivering in April, 2008 " EAST safety patrol inspection and interlocking protective system design and realization " at Nuclear Technology the 31st; People such as Wu Yichun, Ji Zhenshan, Sun Xiaoyang all disclose the safety interlock system of realizing with programmable logic controller (PLC) (PLC) at " atomic energy science technology " the 45th volume the 2nd aspire to " design of EAST safety interlocking supervisory systems " delivered in February, 2011; The people who adds mode this area of interface board card with industrial control computer can consult related data to be known, repeats no more here.Above dual mode is all based on microcontroller or microcomputer; Method with software processes realizes the safety interlocking function; It specifically is the status signal that obtains, analyzes each subsystem through software program; And judge whether fault of subsystem, and then judge whether subsystem is taked the corresponding protection measure according to this status signal.This safety interlock system major advantage is: 1. the input/output interface board toll bar class of selectable programmable logic controller (PLC), industrial control computer is complete, and has abundant software api function can supply to call; 2. network communicating function is powerful, helps remote monitoring; 3. reliability is high, and technical grade programmable logic controller (PLC) and industrial control computer are adapted at using in the industrial environment of magnetic confinement nuclear fusion device, and function is strong, equipment failure rate is low.
But above-mentioned safety interlock system has following shortcoming: 1. this safety interlock system is to use the method for software processes to realize; Mode so that order is carried out is moved control algolithm; System response time uncertain (particularly evident in the PLC mode), system response time is longer; 2. there is the problem of common cause fault because of software,, is unfavorable for the enforcement of defense in-depth approach so this safety interlock system is difficult for satisfying special redundancy of nuclear fusion experimental device and multifarious designing requirement.
Summary of the invention
Technical scheme to be solved by this invention is; A kind of digital safety interlocking system to the magnetic confinement nuclear fusion experimental provision based on PLD (PLD) and microcontroller (MCU) is provided; Adopt pure hardware control logic to realize the parallel processing of safety interlocking function; Overcome the uncertain problem of response time of existing safety interlock system, and adopt the depth defense technology to satisfy special redundancy of nuclear fusion experimental device and multifarious needs.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: a kind of digital safety interlocking system of magnetic confinement nuclear fusion experimental provision, and its circuit comprises:
One micro controller module comprises Flash storer, ethernet interface circuit at least, is responsible for the real-time status of each safety interlocking subsystem of nuclear fusion experimental device is detected, the fault log information of safety interlocking subsystem is preserved, and network service;
One PLD module; Be electrically connected with micro controller module and each safety interlocking subsystem of nuclear fusion experimental device; It comprises input logic and register, control logic circuit, output register, buffer register read-write control circuit at least; Adopt PLD PLD to realize, be responsible for obtaining running status and the fault-signal of each safety interlocking subsystem of nuclear fusion experimental device and this signal is handled;
One power module is system's power supply.
Further, in order to adapt to the abominable electromagnetism and the radiation environment of nuclear fusion experimental chamber, said PLD PLD is on-site programmable gate array FPGA or complex programmable logic device (CPLD).
Further, in order to satisfy special redundancy of nuclear fusion experimental device and multifarious designing requirement, said micro controller module adopts two redundant micro controller modules, and said PLD module adopts four redundant PLD modules.
Further, for realizing the diversity of system, said two redundant micro controller modules are two micro controller modules that adopt different manufacturers, different model, different designs method, identical function; Said four redundant PLD modules are to adopt four PLD modules of different manufacturers, different model, different designs method, identical function.
Further, for guaranteeing the time synchronized of each safety interlocking subsystem of system and nuclear fusion experimental device, said two all built-in IEEE 1588 precision net clock synchronization protocol of redundant micro controller module.
Further; Through the intermediate output signal after the four redundant PLD module concurrent operations also through a voting circuit module; Said voting circuit module is electrically connected on said four redundant PLD modules, said two redundant micro controller modules and each safety interlocking subsystem of nuclear fusion experimental device; Said voting circuit module comprises voting logic, output register, memory buffer read-write control circuit at least, is transferred to the safety interlocking subsystem of two redundant micro controller modules and nuclear fusion experimental device after said voting circuit module will be judged through voting through the intermediate output signal after the four redundant PLD module concurrent operations.
Further, in order to adapt to the abominable electromagnetism and the radiation environment of nuclear fusion experimental chamber, said voting circuit module adopts on-site programmable gate array FPGA or complex programmable logic device (CPLD) to realize.
Further, safeguard that for the ease of system overhaul the voting circuit module adopts 2/4 voting logic.
Further, in order to satisfy the safety and stability of safety interlock system hardware device power supply, said power module adopts two redundancy structures, is made up of rechargeable battery and charge management circuit module, DC power supply circuit module.
The present invention adopts said structure, compared with prior art, has following advantage:
1 PLD module of the present invention and voting circuit module adopt PLD PLD to realize that system response time is fast, and the response time is confirmed;
2 the present invention adopt pure hardware control logic to realize, need not the participation of software program, have avoided because the common cause fault that software error causes, and have simplified the process of system architecture, exploitation and checking;
3 the present invention adopt two redundant micro controller modules and four redundant PLD modules; And two redundant micro controller modules and four redundant PLD modules all adopt the mode of different manufacturers, different model design; Redundant and multifarious principle have been observed; Improve the depth defense ability of system, helped system overhaul;
4 hardware circuits of the present invention are described and are adopted hardware description language (VHDL and Verilog HDL) and schematic diagram to describe respectively; PLD design based on hardware description language can be transplanted among other PLD very easily, thereby has overcome effectively because device is eliminated out-of-date and problem that can't safeguard;
5 micro controller modules of the present invention have ethernet interface circuit; Through network and the workstation communication that is installed on central control room; To workstation the real-time online state and the fault log information of each safety interlocking subsystem of nuclear fusion experimental device are provided, are convenient to operator's monitoring and query analysis;
6 two redundant micro controller modules of the present invention; All built-in IEEE 1588 precision net clock synchronization protocol; Can with the central time synchronized of nuclear fusion experimental device; All safety interlocking subsystems of guaranteeing and installing keep constantly synchronously, and the fault log information that has the precise time stamp is very important to the accurate judgment means safety interlocking of operator subsystem fault;
7 the present invention adopt two redundant power circuit modules and two redundant MCU circuit modules, have effectively improved the reliability of system power supply and network service.
Description of drawings
Fig. 1 is the digital safety interlocking system theory diagram of magnetic confinement nuclear fusion experimental provision of the present invention.
Embodiment
Combine accompanying drawing and embodiment that the present invention is further specified at present.
As shown in Figure 1; Most preferred embodiment of the present invention; A kind of digital safety interlocking system of magnetic confinement nuclear fusion experimental provision, its circuit comprises: the redundant PLD module of two redundant micro controller module 1, four 2, voting circuit module 3, two redundant power module 4.
Wherein, Said two redundant micro controller module 1 is formed by host microcontroller module 11 with from micro controller module 12, host microcontroller module 11 and have same structure from micro controller module 12; At least comprise Flash storer, ethernet interface circuit; Said host microcontroller module 11 and from all built-in IEEE 1588 precision net clock synchronization protocol of micro controller module 12, said host microcontroller module 11 is responsible for the real-time statuss of each safety interlocking subsystem of nuclear fusion experimental device are detected, and the fault log information of safety interlocking subsystem is preserved; And network service; Running status from micro controller module 12 responsible monitoring host microcontroller modules 11 when host microcontroller module 11 breaks down, automatically switches to state of a control from micro controller module 12; And send alerting signal; The said real-time status that substitutes 11 pairs of each safety interlocking subsystems of nuclear fusion experimental device of micro controller module from micro controller module 12 detects, the fault log information of safety interlocking subsystem preserved, and network service;
Said four redundant PLD modules 2; Form by the first PLD module 21, the second PLD module 22, the 3rd PLD module 23, the 4th PLD module 24; The said first PLD module 21, the second PLD module 22, the 3rd PLD module 23, the 4th PLD module 24 are electrically connected with each safety interlocking subsystem of micro controller module 1, voting circuit 3 and nuclear fusion experimental device respectively; At least comprise input logic and register, control logic circuit, output register, buffer register read-write control circuit; Adopt PLD PLD to realize, be responsible for obtaining running status and the fault-signal of each safety interlocking subsystem of nuclear fusion experimental device and this signal is handled;
Said voting circuit module 3 is electrically connected on said four redundant PLD modules 2, said two redundant micro controller modules 1 and each safety interlocking subsystem of nuclear fusion experimental device; Said voting circuit module 3 comprises voting logic, output register, memory buffer read-write control circuit at least; Be transferred to the safety interlocking subsystem of two redundant micro controller modules 1 and nuclear fusion experimental device after said voting circuit module 3 will be judged through voting through the intermediate output signal after four redundant PLD module 2 concurrent operations, said voting circuit module 3 adopts 2/4 voting logic;
Said pair of redundant power module 4 comprises rechargeable battery and charge management circuit module 41, DC power supply circuit module 42, is system's power supply.
For the ease of Maintenance and Repair and routine test, the said units circuit module adopts the standard PC case size design, and supports the hot plug function.
In order to adapt to abominable electromagnetism in nuclear fusion experimental chamber and radiation environment; Contingent damage or temporal effect when resisting high-energy particle bombardment in order to improve PLD PLD (single-particle counter-rotating SEU), four redundant PLD modules 2 and voting circuit module 3 adopt based on the on-site programmable gate array FPGA of Flash/Antifuse or based on the complex programmable logic device (CPLD) of Flash/EEPROM.
Specify the application of digital safety interlocking system of the present invention in actual experiment below:
The software program of this digital safety interlocking system is installed on the workstation of central control room; And the ethernet interface circuit that passes through two redundant micro controller modules 1 is connected with network of workstations; The software program that runs on the workstation provides friendly visualization interface; Can monitor the input/output state of each signal of digital safety interlocking system easily, but and the fault log information submitted to of enquiring digital safety interlock system, be convenient to the operator and analyze.
Running status and fault-signal that four redundant PLD modules 2 receive from each safety interlocking subsystem of nuclear fusion experimental device; This running status and fault-signal are logic level signal or clock pulse signal; Each signal is divided into a plurality of fault ranks according to the concrete implication and the extent of injury that caused, and for example: normally control or the measuring ability of executive system are ordinary failures to the software and hardware of safety interlocking subsystem, fault that security of system and personal safety are produced moderate risk is secondary failure, security of system and personal safety are produced breakneck fault is level fault etc.According to the on-the-spot actual conditions of each safety interlocking subsystem of nuclear fusion experimental device; If each on-the-spot safety interlocking subsystem can provide the running status and the fault-signal of four redundancies; Then four redundant safety interlocking subsystem running statuses and fault-signal insert the first PLD module 21, the second PLD module 22, the 3rd PLD module 23, the 4th PLD module 24 of four redundant PLD modules 2 respectively after electrical isolation; If on-the-spot four redundant running status and fault-signals can't be provided, then will single running status and the fault-signal parallelly connected first PLD module 21 that inserts four redundant PLD modules 2 respectively, the second PLD module 22, the 3rd PLD module 23, the 4th PLD module 24 after electrical isolation.Before a kind of mode reliability high, but need the four redundant safety interlocking subsystem running status that is mutually independent and fault-signal and four tunnel separate signal transmission lines, system cost height; The back a kind of mode cost low, but reliability be not so good as before a kind of mode.Present embodiment is an example with four redundant safety interlocking subsystem running status and fault-signals; After four PLD modules that the safety interlocking subsystem running status of said four redundancies and fault-signal insert four redundant PLD modules 2; At first through input logic and register; Get into control logic circuit, control logic circuit believes that according to state logical relation specific between described fault rank and each signal carries out parallel processing to these signals.
Through the running status and the fault-signal of the safety interlocking subsystem after four redundant PLD modules 2 processing, as intermediate output signal, through output register, access voting circuit module 3.The voting logic of voting circuit module 3 carries out 2/4 voting to intermediate output signal and judges; And will pass through the intermediate output signal process output register after voting is judged; Generate the output signal; The output signal is sent to each safety interlocking subsystem of nuclear fusion experimental device through electrical isolation and driving back through optical fiber or cable, plays the function of interlock protection.Above-mentioned 2/4 voting is under normal circumstances carried out; If wherein arbitrary module of the first PLD module 21 of four redundant programmed logical module 2, the second PLD module 22, the 3rd PLD module 23, the 4th PLD module 24 is owing to reasons such as maintenance are pulled out, then 2/4 voting logic of voting circuit module 3 automatically switches into 2/3 voting.If wherein two modules of four redundant programmed logical module 2 are pulled out, then voting circuit module 3 automatically switches into 1/2 voting.At this moment, if four redundant programmed logical module 2 have module to be pulled out again, then voting circuit module 3 is sent protection and alerting signal.When the voting logic output of voting circuit module 3 changes; System will write down through the intermediate output signal after the four redundant PLD modules 2 automatically, so that analyze the first PLD module 21, the second PLD module 22, the 3rd PLD module 23 of four redundant programmed logical module 2, the state of the 4th PLD module 24.
Under the normal condition; The host microcontroller module 11 of two redundant micro controller modules 1 is in state on duty, is responsible for the real-time status of each safety interlocking subsystem of nuclear fusion experimental device is detected, and the fault log information of safety interlocking subsystem is preserved; And network service; Running status from micro controller module 12 responsible monitoring host microcontroller modules 11 when host microcontroller module 11 breaks down, automatically switches to state of a control from micro controller module 12; And send alerting signal; The said real-time status that substitutes 11 pairs of each safety interlocking subsystems of nuclear fusion experimental device of micro controller module from micro controller module 12 detects, the fault log information of safety interlocking subsystem preserved, and network service.The host microcontroller module 11 of two redundant micro controller modules 1 or from micro controller module 12 memory buffer read-write control circuit through voting circuit module 3; Read the output signal of its output register; Also can be through the first PLD module 21 of four redundant programmed logical module 2 or the memory buffer read-write control circuit of the second PLD module 22 or the 3rd PLD module 23 or the 4th PLD module 24; Read the status signal of its input logic and register or the intermediate output signal of output register; And above-mentioned signal and recorded logs information are sent to workstation, thereby reach the purpose of real-time monitoring through host microcontroller module 11 or from the ethernet interface circuit of microcontroller 12.Host microcontroller module 11 or be used for the fault log information of each safety interlocking subsystem of the detected nuclear fusion experimental device of local storage digital safety interlocking system from the Flash storer of microcontroller 12 simultaneously; Guarantee under the situation that network service is interrupted still accurately and timely record trouble daily record.In addition; Because the safety interlocking subsystem that different nuclear fusion experimentals uses is different; Those safety interlocking subsystems of temporarily not participating in nuclear fusion experimental often are in stopped status; Can these safety interlock signal of not participating in the safety interlocking subsystem of nuclear fusion experimental be bypassed through host microcontroller module 11 or from microcontroller 12; It specifically is host microcontroller module 11 or from microcontroller 12 memory buffer read-write control circuit through four redundant PLD modules 2; Input logic and register are carried out running status and the fault-signal that each safety interlocking subsystem is obtained in read operation, input logic and register are carried out the status signal that write operation comes certain safety interlocking subsystem of bypass.In addition, host microcontroller module 11 and from all built-in IEEE 1588 precision net clock synchronization protocol of microcontroller 12, can with the central time synchronized of nuclear fusion experimental device, guarantee to keep constantly synchronously with all safety interlocking subsystems of device.The fault log information that has the precise time stamp is very important to the accurate judgment means safety interlocking of operator subsystem fault.
Two redundant power modules 4 provide the power supply of safety and stability for equipment of the present invention; Under the situation of direct supply normal power supply; Device power supply (DPS) selects DC power supply circuit module 42 to supply power automatically, and the rechargeable battery to rechargeable battery and charge management circuit module 41 carries out Charge Management simultaneously; After losing direct supply; Be transformed into the rechargeable battery powered of rechargeable battery and charge management circuit module 41 by power supply duplex selector switch automatic seamless, the power-on time of rechargeable battery should surpass the required maximum duration requirement of safe shutdown of each safety interlocking subsystem of nuclear fusion experimental device; After regaining direct supply, be transformed into DC power supply circuit module 42 by power supply duplex selector switch automatic seamless again and supply power, and rechargeable battery is carried out Charge Management.Preferably, rechargeable battery is selected lithium battery for use.
The present invention effectively overcomes the common cause fault problem of internal system except using hardware; Adopt two redundant micro controller modules, the PLD module of four redundancies and the power module of two redundancies to realize redundant principle; Also possessed diversity principle simultaneously:, adopt the PLD of different manufacturers, different hardware circuit describing methods, different measures such as developing instrument designs respectively to the PLD module of four redundancies; The micro controller module of two redundancies adopts the microcontroller and the network interface circuit of different manufacturers respectively; The power module of two redundancies adopts DC power supply circuit and rechargeable battery circuit respectively.
Although specifically show and introduced the present invention in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the present invention that do not break away from appended claims and limited; Can make various variations to the present invention in form with on the details, be protection scope of the present invention.
Claims (9)
1. the digital safety interlocking system of a magnetic confinement nuclear fusion experimental provision is characterized in that, its circuit comprises:
One micro controller module comprises Flash storer, ethernet interface circuit at least, is responsible for the real-time status of each safety interlocking subsystem of nuclear fusion experimental device is detected, the fault log information of safety interlocking subsystem is preserved and network service,
One PLD module; Be electrically connected with micro controller module and each safety interlocking subsystem of nuclear fusion experimental device; It comprises input logic and register, control logic circuit, output register, buffer register read-write control circuit at least; Adopt PLD PLD to realize, be responsible for obtaining running status and the fault-signal of each safety interlocking subsystem of nuclear fusion experimental device and this signal is handled
One power module is system's power supply.
2. digital safety interlocking system according to claim 1 is characterized in that: said PLD PLD is on-site programmable gate array FPGA or complex programmable logic device (CPLD).
3. digital safety interlocking system according to claim 1 is characterized in that: said micro controller module adopts two redundant micro controller modules to form, and said PLD module adopts four redundant PLD modules to form.
4. digital safety interlocking system according to claim 3 is characterized in that: said two all built-in IEEE 1588 precision net clock synchronization protocol of redundant micro controller module.
5. digital safety interlocking system according to claim 3 is characterized in that: said two redundant micro controller modules are two micro controller modules that adopt different manufacturers, different model, different designs method, identical function; Said four redundant PLD modules are to adopt four PLD modules of different manufacturers, different model, different designs method, identical function.
6. according to claim 3 or 4 or 5 described digital safety interlocking systems; It is characterized in that: through the output signal after the four redundant PLD module concurrent operations also through a voting circuit module; Said voting circuit module is electrically connected on said four redundant PLD modules, said two redundant micro controller modules and each safety interlocking subsystem of nuclear fusion experimental device; Said voting circuit module comprises voting logic, output register, memory buffer read-write control circuit at least, is transferred to the safety interlocking subsystem of two redundant micro controller modules and nuclear fusion experimental device after said voting circuit module will be judged through voting through the output signal after the four redundant PLD module concurrent operations.
7. digital safety interlocking system according to claim 6 is characterized in that: said voting circuit module adopts on-site programmable gate array FPGA or complex programmable logic device (CPLD) to realize.
8. digital safety interlocking system according to claim 6 is characterized in that: said voting circuit module adopts 2/4 voting logic.
9. digital safety interlocking system according to claim 1 is characterized in that: said power module adopts two redundancy structures, is made up of rechargeable battery and charge management circuit module, DC power supply circuit module.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112230610A (en) * | 2020-09-16 | 2021-01-15 | 中国科学院合肥物质科学研究院 | Network system of helium low-temperature control system |
| CN112366007A (en) * | 2020-11-11 | 2021-02-12 | 核工业西南物理研究院 | Personal safety interlocking system for tokamak device |
| CN116066248A (en) * | 2022-10-11 | 2023-05-05 | 中国核动力研究设计院 | Nuclear power plant diesel generator set unloading instruction generation device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112230610A (en) * | 2020-09-16 | 2021-01-15 | 中国科学院合肥物质科学研究院 | Network system of helium low-temperature control system |
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| CN112366007B (en) * | 2020-11-11 | 2023-01-24 | 核工业西南物理研究院 | Personal safety interlocking system for tokamak device |
| CN116066248A (en) * | 2022-10-11 | 2023-05-05 | 中国核动力研究设计院 | Nuclear power plant diesel generator set unloading instruction generation device and method |
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Application publication date: 20120418 |