CN104966538A - Nuclear power station instrument control system based on FPGA technologies - Google Patents
Nuclear power station instrument control system based on FPGA technologies Download PDFInfo
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention discloses a nuclear power station instrument control system based on FPGA technologies. The system comprises a main processing board MPU, a test service board TSU, m input boards, n output boards, beta network communication boards NCUs, wherein, m, n and beta are all no less than 1. The main processing board MPU, the network communication boards NCUs, the input boards and the output boards are connected to the test service board TSU through a test function communication bus LinkT. The input boards and the output boards are connected with the board MPU through an IO data redundancy communication bus. The network load of a safety function bus can be lowered. The system which is easy to realize has an overall low research and development cost. The material cost is relatively low. The diversified system demands of a nuclear power station are satisfied. The system with more prominent function independence has the advantages of increased reliability, greater processing speed, shorter response time, and greater safety.
Description
Technical field
Art is nuclear power station DCS I&C system, particularly a kind of DCS I&C system platform architecture based on FPGA.
Background technology
The many employings of digitizer Ore-controlling Role of current nuclear power station realize based on the equipment of microprocessor, and based on the software of CPU, even if relatively simple system also needs the program code of vast number, and there is potential software common mode failure risk, so diversity drive system is adopted to realize the significant design principle that depth defense has become nuclear power plant instrument Ore-controlling Role.
FPGA (Field-Programmable Gate Array), i.e. field programmable gate array, it is the product further developed on the basis of the programming devices such as PAL, GAL, CPLD.It occurs as a kind of semi-custom circuit in special IC (ASIC) field, has both solved the deficiency of custom circuit, overcomes again the shortcoming that original programming device gate circuit number is limited.FPGA has the advantage such as mechanism, high-speed parallel process, low complex degree of pure hardware, becomes one of development trend of nuclear power I&C system.FPGA technology is applied successively in Chinese Nuclear Power field, such as state's core from the Nupac system of instrument and Lockheed Martin Corporation's cooperative development and the western room that uses in DAS system of AP1000 unit electrically based on the platform product of FPGA technological development.
In the on-the-spot I&C system of traditional nuclear power station, only have two communication networks redundancy each other, test data, diagnostic data and normal I/O data all realize based on same data communication network.As domestic Hollysys's product, its inside only has a road IO bus, for transmitting Various types of data.In some application requirements security function and the subsidiary function independence of nuclear power station, subsidiary function can as non-security level functional development.If can not separate, then require that subsidiary function reaches safe level standard, add cost.
In Contemporary Digital I &C equipment, general hang over a bus in the same with I/O cell of communication unit communicates with main control unit, and the data volume due to network communication unit is general comparatively large, can take the time that universal serial bus is more, reduce system response time.
The I&C system major defect of existing nuclear power station has the following aspects:
(1) adopt CPU architecture, complex structure more, realize cost high, and the common mode failure risk of software can not be avoided.
(2) because security communication function (SCF) bus and subsidiary function bus are not independent, have influence on the normal security function run when test function can be caused to break down, reliability needs to improve further.
(3) network load is higher.If the big data quantity of communication card and more IO count all by a bus communication, communication load can be caused to increase, the time taking serial communication bus is comparatively large, and system response time is lower.
Summary of the invention
For solving the problem, the invention provides a kind of nuclear power plant instrument Ore-controlling Role based on FPGA technology,
Comprise Main Processing Unit card MPU, testing service board TSU, m input card, a n output board card and β network service board NCU, m >=1, n >=1, β >=1; Described Main Processing Unit card MPU, network service board NCU, input card and output board card, be connected to described testing service board TSU by test function communication bus LinkT; Described input card is connected with described board MPU by I/O data redundancy communication bus with described output board card; Wherein,
Main Processing Unit card MPU, switches for the storage of data operation and process, systematic parameter and configuration, pattern and reports to the police, and carrying out point-to-point Differencing communication between described board NCU;
Network service board NCU has been used for network communicating function, the diagnostic message of this board in operational process is sent to testing service board TSU by LinkT, network service board NCU is provided with two kinds of communication interfaces, one is Industrial Ethernet interface, for status data and the network variable data of transmission system, another is point-to-point Differencing communication interface, for the communication with described Main Processing Unit card MPU;
Input card comprises analog input card AIU and digital input card DIU, for the transmission of the sampling of on-site signal, conditioning, filtering, analog to digital conversion and collection signal;
Output board card comprises analog output card AOU and digital output card DOU, for controlling topworks;
Testing service board TSU for starting the test of described nuclear power plant instrument Ore-controlling Role, diagnosis, test, by the non-controlling related data of LinkT link transmission system; For by IO_LinkA and IO_LinkB link transmission system monitoring data and diagnostic message; Communicate with top service device, system monitoring data and diagnostic message are sent to top service device, and receive diagnosis and experimental order from top service device.
Further, described Main Processing Unit card MPU comprises FPGA, power circuit, configuring chip EEPROM, buffer memory RAM, clock circuit.
Further, described configuring chip EEPROM, in order to the configuration parameter of saved system, reads after powering on, is furnished with large capacity cache RAM simultaneously, the data of receiving and dispatching in order to cache logic computing or communication port.
Further, described network service board NCU comprises the FPGA being provided with fault diagnosis and fault processing module, and is equipped with large capacity cache RAM.
Further, the signal that described analog input card AIU and digital input card DIU gathers comprises voltage signal, current signal, thermoelectricity occasionally thermal resistance industry spot signal.
Further, described telecommunication circuit IO LinkA and telecommunication circuit IO LinkB is RS485 bus, redundancy each other.
Further, described test bus LinkT and described IO_LinkA and described IO_LinkB electrical isolation.
Further, two independently point-to-point communication match circuits are provided with between described each network service board NCU and Main Processing Unit card MPU.
Further, described testing service board TSU is equipped with local mass storage, for the important operational factor of uninterrupted storage system, can be used for system cloud gray model and accident post analysis.
Beneficial effect of the present invention is as follows: first each board all adopts FPGA to build system platform as main process chip, reduces structure complexity, strengthens functional independence and security.Secondly the present invention by security function bus and subsidiary function bus independent, adopt independently diagnostic network and testing service board, the subsidiary function such as test, diagnosis, test of completion system.Last the present invention, in order to reduce the network load of security function bus, adopts point-to-point communication mode between network service board and Main Processing Unit card.
FPGA technology is adopted to realize the processing logic of systemic-function, and traditional CPU Technical comparing, implementation is easy, and overall R&D costs are low, and Material Cost is also relatively low, and meets the diversity systems demand of nuclear power station.
Separately, system reliability strengthens, and meets the functional independence sexual demand of nuclear power system for normal communication link and subsidiary function link.
Adopt FPGA technology, because its structure and conventional analog circuits, DLC (digital logic circuit) architectural characteristic are similar, sooner, the response time is shorter for processing speed.
Compared with the platform of CPU architecture, this platform is not easy to be subject to external attack, has better security.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present invention;
Fig. 2 is Main Processing Unit card MPU schematic diagram of the present invention;
Fig. 3 is IO board schematic diagram of the present invention;
Fig. 4 is network service board NCU board schematic diagram of the present invention;
Fig. 5 is testing service board TSU board schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, it should be noted that, these specific descriptions just allow those of ordinary skill in the art be more prone to, clearly understand the present invention, but not limitation of the invention is explained.
A kind of nuclear power plant instrument Ore-controlling Role based on FPGA technology that the present invention proposes, the operation of system does not rely on microprocessor and software, but utilizes FPGA technology to realize the main controlling functions of nuclear power station.
Native system comprises a cabinet and related peripherals.Peripheral assembly comprises terminal assembly, fuse and other on-the-spot hardware interface.The maximum support of each cabinet 16 IO boards, 3 network service board NCU and 1 testing service board TSU.Cabinet can configure the board of varying number according to demand, comprises a Main Processing Unit card, at least one network service board, testing service board, at least one input card and an output board card, specifically
As shown in Figure 1, a kind of nuclear power plant instrument Ore-controlling Role based on FPGA technology of the present invention, comprise Main Processing Unit card MPU, 2 input card (AIU, DIU), 2 output board card (AOU, DOU), 2 network service boards (NCU1, NCU2) and testing service board TSU; Described Main Processing Unit card MPU, network service board NCU, input card and output board card, be connected to testing service board TSU by independently test function communication bus LinkT; Input card is connected with Main Processing Unit card MPU with IO LinkB by I/O data redundancy communication bus IO LinkA with output board card.
Main Processing Unit card MPU, switches for the storage of data operation and process, systematic parameter and configuration, pattern and reports to the police, and carrying out point-to-point Differencing communication between network service board NCU; Network service board NCU has been used for network communicating function, both can connect the NCU that top service device also can connect other control stations, and formed powerful DCS control system by Industrial Ethernet.Network service board NCU is the bridge of field control station and PERCOM peripheral communication.Diagnostic message in this board operational process is sent to testing service by LinkT and applies for card TSU by network service board NCU.Network service board NCU is provided with two kinds of communication interfaces, one is Industrial Ethernet interface, for the communication to external equipment, both can connect upper strata display device, also the NCU board of other control stations can be connected, the status data of prevailing transmission system and network variable data; Another is point-to-point Differencing communication interface, for the communication with Main Processing Unit card MPU.
Input card comprises analog input card AIU and digital input card DIU, for the transmission of the sampling of on-site signal, conditioning, filtering, analog to digital conversion and collection signal.
Output board card comprises analog output card AOU and digital output card DOU, exports the signals such as industry spot required voltage signal, current signal or switching signal, for topworkies such as pilot relay, variable valve, indicating equipments.
Analog input card, analog output card, digital input card and digital output card are referred to as IO board, are connected with Main Processing Unit card MPU by IO_LinkA with IO_LinkB, are connected by LinkT with testing service board TSU simultaneously.IO_LinkA and IO_LinkB two links are RS485 bus, redundancy each other.Article two, link works simultaneously, and when a link failure, other one then can not be affected.Be connected by point-to-point Differencing communication between network service board NCU with Main Processing Unit card MPU, between each NCU and MPU, have two independently to receive and dispatch line.IO, NCU and MPU are connected to testing service board TSU by independently test bus, this bus realizes test function, and the information of transmission diagnosis and test, test bus LinkT and IO_LinkA and IO_LinkB electrical isolation, can not normally work by influential system after this link failure.
Main Processing Unit card MPU is the operation of the core processing unit of platform control station, control system, and the operational mode of system comprises normal operation mode, service mode and monitoring mode etc.The function that MPU mainly completes comprises: with the communicating of IO board and the board lamps such as NCU, complete data operation and process, systematic parameter storage and configuration, pattern switch and warning etc.
As shown in Figure 2, MPU board is primarily of part compositions such as FPGA, power circuit, configuring chip EEPROM, buffer memory RAM, clock circuits.Power circuit, configuring chip EEPROM, buffer memory RAM, clock circuit are connected with FPGA respectively.MPU is equipped with configuring chip EEPROM, in order to the configuration parameter of saved system, reads after powering on, ensures the dirigibility of different system, be furnished with large capacity cache RAM simultaneously, the data of receiving and dispatching in order to cache logic computing or communication port.The control core that the point-to-point communication module of FPGA, IO redundant communication module (RS485 telecommunication circuit) are whole board, forms different communication links by each telecommunication circuit, completes the controlling functions to whole system.
The principle of work of MPU:
(1) redundancy I/O data link is formed by the RS485 transceiver of IO_LinkA and IO_LinkB, the data of transmitting-receiving carry out protocol analysis by " the IO redundant communication module " of FPGA, complete data processing and arithmetic logic in FPGA inside under the operation of " status control module ".Wherein there is AB two independently path " IO redundant communication module " inside, has respective link layer, application layer protocol, completes redundancy communication function by arbitration mechanism, wherein after a link failure, and the not normal operation of influential system.MPU is the main side of IO_LinkA and IO_LinkB link, initiates the traffic operation to each IO board by it.
(2) FGPA receives and dispatches the data on LinkT link by " test function communication module ", namely test, diagnose and the data of the subsidiary function such as test, this data link and IO communication link IO_LinkA and IO_LinkB electrical isolation and completely independent in fpga logic inside " test function communication module " and " IO redundant communication module ", only there is status control module to complete the parsing of respective link command adapted thereto, the normal operation of IO communication link can not be disturbed.In addition, the running state information of parameter and the MPU monitored is needed also can be sent to testing service plate TSU by " test function communication module " in system.MPU be LinkT link from end, receive main side (TSU board) test, diagnosis, test, supervision etc. order after start response.
(3) connection of MPU and NCU is by point-to-point communication, has two independently order wires with every block NCU board, one for receiving data, one for sending data." the NCU point-to-point communication module " of FPGA inside has independently communication logic units to every block NCU, the data of the transmitting-receiving polylith NCU board that can walk abreast.Point-to-point mode can complete the high data throughput with NCU, and does not affect the bandwidth of IO communication bus, reduces system response time.
(4) FPGA inside has fault diagnosis and fault processing module, for the exception in surveillance operational process, and diagnostic message is sent by LinkT.Diagnostic message comprises board information diagnosis in place, state machine diagnosis, clock diagnosis, various communication failure diagnosis etc.The logical operation of " data processing module " completion system and process; " Clock management module " is responsible for carrying out frequency multiplication and phase shift operation to the clock of external crystal-controlled oscillation, and controls the traffic rate of various communication." status control module " completes the operations such as pattern switching, instructions parse, data dispatch.
As shown in Figure 3, IO board comprises analog input card, digital input card, analog output card and digital output card.The principle of each IO board is basically identical.Analog output card and digital output card, often kind of certain specific type of board general control.
Analog input card and digital input card are referred to as input class board, complete the function such as transmission of the sampling of on-site signal, conditioning, filtering, analog to digital conversion and collection signal.The signal gathered comprises voltage signal, current signal, the thermoelectricity occasionally industry spot signal such as thermal resistance.According to different demand, the available number of channels of each input card is different, generally between 4 ~ 32.Mutually isolated between each input channel, and passage has self-checking function.The signal of analog input card and digital input card collection comprises voltage signal, current signal, the thermoelectricity occasionally industry spot signal such as thermal resistance
Analog output card and digital output card are referred to as output board card, are responsible for pilot relay, indicating equipment and other on-the-spot driving mechanisms, often kind of certain specific type of board general control.According to different demand, the port number that each output board card can provide quantity not wait, generally between 1 ~ 16.Mutually isolated between each output channel, and passage has self-checking function.
The RS485 transceiver that IO board also has IO_LinkA and IO_LinkB forms redundancy I/O data link, its ultimate principle and MPU similar.Each IO board be IO_LinkA and IO_LinkB link from end, different responses is carried out to the order receiving MPU.
The LinkT link of IO board is used for TSU board transmission non-controlling related data, IO board be LinkT link from end, start response after receiving the order such as test, diagnosis, test, supervision of main side TSU board.
The FPGA inside of IO board has fault diagnosis and fault processing module, for the exception in surveillance operational process, and diagnostic message is sent by LinkT.
As shown in Figure 4, network service board NCU, can connect top service device by Industrial Ethernet, also can connect the NCU of other field control station, complete the interior communication at multi-control station, forms powerful DCS control system.NCU board is the bridge of field control station and PERCOM peripheral communication.NCU board comprises the FPGA being provided with fault diagnosis and fault processing module, and is equipped with large capacity cache RAM.
NCU board has two kinds of communication interfaces, and one is Industrial Ethernet interface, is responsible for the communication to outside-the station equipment; Another is point-to-point Differencing communication interface, and be responsible for the communication with our station MPU, general traffic rate is higher, adopts serial communication mode.
NCU board is primarily of part compositions such as FPGA, power circuit, buffer memory RAM, point-to-point communication module, ethernet communication module, clock circuits.Be equipped with large capacity cache RAM, the packet that buffer memory is sent by MPU, can meet between station and the demand in station outer different communication cycle.
The ethernet communication link realization of NCU board communicates with top service device or the NCU of other field control station communicates, and communication cycle generally can configure, and meets different system requirements.
Be provided with two independently point-to-point communication match circuits between each NCU and MPU, the connection of NCU board and MPU board by point-to-point communication, for improve traffic rate generally adopt differential level standard, one for receiving data, one for sending data.Point-to-point mode can complete the high data throughput with MPU, and does not affect the bandwidth of IO communication bus, reduces system response time.
The LinkT link of NCU board is used for TSU board transmission non-controlling related data, NCU board be LinkT link from end, start response after receiving the order such as test, diagnosis, test, supervision of main side TSU board.The FPGA inside of NCU board has fault diagnosis and fault processing module, for the exception in surveillance operational process, and diagnostic message is sent by LinkT.
As shown in Figure 5, TSU board is testing service board, mainly completes three functions: the system supplymentary function such as test, diagnosis, test of (1) start up system, mainly through the non-controlling related data of LinkT link transmission system.(2) by IO_LinkA and IO_LinkB link transmission system monitoring data and diagnostic message, and local mass storage can be equipped with, for the important operational factor of uninterrupted storage system, can be used for system cloud gray model and accident post analysis etc.Telecommunication circuit IO LinkA and telecommunication circuit IO LinkB is RS485 bus, redundancy each other.Test bus LinkT and described IO_LinkA and described IO_LinkB electrical isolation.(3) for communicating with top service device, the running status of this board and the system monitoring data of other board gathered and diagnostic message being sent to upper strata, and receiving the orders such as diagnosis and test from upper strata.
TSU board has 3 kinds of communication links.
(1) the RS485 transceiver of IO_LinkA and IO_LinkB forms redundancy I/O data link, RTTS monitoring data and diagnostic message, the on-line monitoring of completion system.Its ultimate principle and MPU similar.TSU board be IO_LinkA and IO_LinkB link from end, different responses is carried out to the order receiving MPU.
(2) LinkT link is test link, the test of transmission system, diagnosis and test etc. and the uncorrelated data of control and order.TSU board is the main side of LinkT link, for sending different subsidiary function orders to each board, and receives data.
(3) the ethernet communication link of TSU board realizes communicating with top service device, and the running status of this board and the system monitoring data of other board gathered and diagnostic message are sent to upper strata, and receives from upper strata and diagnose and the order such as test.
Finally it should be noted that, above-mentioned explanation is only most preferred embodiment of the present invention, not does any pro forma restriction to the present invention.Any those of ordinary skill in the art; do not departing within the scope of technical solution of the present invention; the way of above-mentioned announcement and technology contents all can be utilized to make many possible variations and simple replacement etc. to technical solution of the present invention, and these all belong to the scope of technical solution of the present invention protection.
Claims (9)
1., based on a nuclear power plant instrument Ore-controlling Role for FPGA technology, it is characterized in that comprising Main Processing Unit card MPU, testing service board TSU, m input card, a n output board card and β network service board NCU, m >=1, n >=1, β >=1; Described Main Processing Unit card MPU, network service board NCU, input card and output board card, be connected to described testing service board TSU by test function communication bus LinkT; Described input card is connected with described board MPU by I/O data redundancy communication bus with described output board card; Wherein,
Main Processing Unit card MPU, switches for the storage of data operation and process, systematic parameter and configuration, pattern and reports to the police, and carrying out point-to-point Differencing communication between described board NCU;
Network service board NCU has been used for network communicating function, the diagnostic message of this board in operational process is sent to testing service board TSU by LinkT, network service board NCU is provided with two kinds of communication interfaces, one is Industrial Ethernet interface, for status data and the network variable data of transmission system, another is point-to-point Differencing communication interface, for the communication with described Main Processing Unit card MPU;
Input card comprises analog input card AIU and digital input card DIU, for the transmission of the sampling of on-site signal, conditioning, filtering, analog to digital conversion and collection signal;
Output board card comprises analog output card AOU and digital output card DOU, for controlling topworks;
Testing service board TSU for starting the test of described nuclear power plant instrument Ore-controlling Role, diagnosis, test, by the non-controlling related data of LinkT link transmission system; For by IO_LinkA and IO_LinkB link transmission system monitoring data and diagnostic message; Communicate with top service device, system monitoring data and diagnostic message are sent to top service device, and receive diagnosis and experimental order from top service device.
2. nuclear power plant instrument Ore-controlling Role according to claim 1, is characterized in that described Main Processing Unit card MPU comprises FPGA, power circuit, configuring chip EEPROM, buffer memory RAM, clock circuit.
3. nuclear power plant instrument Ore-controlling Role according to claim 2, is characterized in that described configuring chip EEPROM, in order to the configuration parameter of saved system, reads, be furnished with large capacity cache RAM simultaneously after powering on, the data of receiving and dispatching in order to cache logic computing or communication port.
4. nuclear power plant instrument Ore-controlling Role according to claim 1, is characterized in that described network service board NCU comprises the FPGA being provided with fault diagnosis and fault processing module, and is equipped with large capacity cache RAM.
5. nuclear power plant instrument Ore-controlling Role according to claim 1, is characterized in that the signal that described analog input card AIU and digital input card DIU gathers comprises voltage signal, current signal, thermoelectricity occasionally thermal resistance industry spot signal.
6. nuclear power plant instrument Ore-controlling Role according to claim 1, is characterized in that described telecommunication circuit IOLinkA and telecommunication circuit IO LinkB is RS485 bus, redundancy each other.
7. nuclear power plant instrument Ore-controlling Role according to claim 1, is characterized in that described test bus LinkT and described IO_LinkA and described IO_LinkB electrical isolation.
8. nuclear power plant instrument Ore-controlling Role according to claim 1, is characterized in that being provided with two independently point-to-point communication match circuits between described each network service board NCU and Main Processing Unit card MPU.
9. nuclear power plant instrument Ore-controlling Role according to claim 1, is characterized in that described testing service board TSU is equipped with local mass storage, for the important operational factor of uninterrupted storage system, can be used for system cloud gray model and accident post analysis.
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| CN106527295A (en) * | 2016-12-28 | 2017-03-22 | 中核控制系统工程有限公司 | Security level DCS dual-FPGA diversity architecture |
| CN106782717A (en) * | 2016-12-28 | 2017-05-31 | 中国科学院合肥物质科学研究院 | A kind of small-sized nuclear reactor I＆C system framework |
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| CN108711459A (en) * | 2018-05-30 | 2018-10-26 | 中国原子能科学研究院 | A kind of diversified protective device for fast reactor |
| CN109243650A (en) * | 2018-10-22 | 2019-01-18 | 国核自仪系统工程有限公司 | The nuclear power station security level I&C system and method with configuration function based on FPGA |
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| CN110322979A (en) * | 2019-07-25 | 2019-10-11 | 美核电气（济南）股份有限公司 | Nuclear power station digital control computer system core processing unit based on FPGA |
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| CN114143228A (en) * | 2021-12-09 | 2022-03-04 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Mirror image maintenance platform backboard bus self-diagnosis device and method |
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| 郭富强: "核安全级数字化控制平台通信控制板卡的硬件设计", 《中国优秀硕士学位论文全文数据库（电子期刊）信息科技辑》 * |
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