CN101741532B - Two-computer switching device for redundant server switching - Google Patents
Two-computer switching device for redundant server switching Download PDFInfo
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- CN101741532B CN101741532B CN200810173676A CN200810173676A CN101741532B CN 101741532 B CN101741532 B CN 101741532B CN 200810173676 A CN200810173676 A CN 200810173676A CN 200810173676 A CN200810173676 A CN 200810173676A CN 101741532 B CN101741532 B CN 101741532B
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Abstract
The invention relates to a two-computer switching device for redundant server switching, in particular to a redundant device comprising a main central server and a hot backup server in a core subsystem for a digital control system of a nuclear power station, which is an expansion card based on a computer PCI-E bus. The device is characterized by comprising a conversion bridge chip set which is used for unstringing the data received by computers and stringing the data generated in a control device; the converted data is stored in a memory; the control device generates and receives pulse signals for carrying out logical operation and control; a logical drive completes input and output through an optical coupler and a triode peripheral circuit; and monitoring equipment for monitoring the switching state of the device, the state of a main hot backup computer and the connection state of cables between two-computer switching devices for redundant server switching is connected with the control device, thereby achieving the purpose of safely, reliably and quickly switching.
Description
Technical field
The present invention relates to a kind of two-shipper switching device shifter that redundant server switches that is used for; Especially refer to that a kind of main central server that is used for the core subsystem of nuclear plant digital appearance control system is equipped with the redundant apparatus that server constitutes with heat; Wherein this device is monitored master server and the hot server that is equipped with; When master server or cable broke down, this device switched to heat with master server and is equipped with server.
Background technology
Core subsystem in nuclear plant digital appearance control system is a computer control system.This system not only accomplishes the automatic controlled function of the most of technical process of nuclear power station, and to operator supervision and operation interface is provided, and functions such as real time data supervision, incident and warning processing, trend, parameter adjustment, manual control are provided.Digitizing And Control Unit is divided into automatic key-course and operation supervise and control layer, adopts central-server-based two-tier network structure.Server is in and connects automatic key-course and operation supervise and control layer key position, in system, has central role.Whole system is with regard to cisco unity malfunction, so guarantee that server ability operate as normal is to whole system and important in case whole servers go wrong simultaneously.
Domestic and international redundant dual systems generally has three kinds of application models at present: duplex mode, active/standby mode (hot/cold is subsequent use) and cluster server mode.Present system adopts the design of two-node cluster hot backup, needs to realize automatic two-shipper diagnosis and switching.In design in the past, often adopt mode to realize two-shipper diagnosis and switching based on software and network; Reliability receives the influence of factors such as operating system; Present existing two-shipper switching device shifter exists fail-over time longer; Diagnosis and the time response oversize (3s) of switching, can not satisfy the demand that the user is switched quick (0.5s-1s).It is more to expend system resource, and accident analysis abilities such as interface loose contact, burn out detection are relatively poor, and not advanced interface reliably, is unfavorable for the compatibility of the update of product.So existing diagnosis and the reliability of switch unit to improve the server diagnosis and to switch that needs design to adopt the specialized hardware mode improves switch speed.The invention solves these problems, increased more advanced function and more friendly interpersonal interface simultaneously.
The equipment and the method for such redundant switching controls have been described in Chinese invention patent publication number CN1275000A.A kind of equipment and method that is used for redundant switching controls is provided in above-mentioned disclosed system; Can dispose controlled function uncomplicatedly; During such as the function of switching in control between the Redundant Control parts of operation system and back-up system, when two system start-up; The appointment of initial startup system, and forbid switchback.But following problem can occur when this device is applied in the computer control system of nuclear plant digital appearance control system: security and stability is not high; If the control section of device goes wrong; Whole device just can't move, and this is very serious problem in nuclear power station; Because the structure problem of this device and the demand that in computer digit communication and control in real time, therefore can not satisfy the remote monitoring and the control of nuclear power station as the interface device of Signal Spacing; The interface of this device can not satisfy the compatibility of model change; For in the system in case there is not resolution ability when occurring two places or more fault simultaneously.
Need a demand that can satisfy the nuclear power field through above-mentioned explanation for two-shipper switching device shifter quick (0.5s-1s) switching of all very high redundant server switching of the requirement of security of products and reliability at present; It is less to expend system resource, economize on hardware cost, the two-shipper switching device shifter that the stronger redundant servers of accident analysis ability such as the interface contact is good, burn out detection switch.In a single day make great efforts and insistent experiment through the inventor is permanent, invent out and can satisfy of the requirement of nuclear power field, can handle again for occurring two places or more fault in the system simultaneously for security of products and reliability; And advanced interface is reliably arranged, be beneficial to the compatibility of the update of product.
Summary of the invention
Goal of the invention of the present invention be to provide can safe and reliable quick switching a kind ofly be used for the two-shipper switching device shifter that redundant server switches.
The present invention reaches the technological means that above-mentioned purpose adopts; A kind of expansion card based on computer PCI-E bus; Include the data that computer is received unstring with control device in the translational bridging chipset of the data string that produces; Storage after the conversion is in memory, and control device produces and the received pulse signal carries out logical operation and control, accomplishes the logical drive of input and output through optocoupler and triode peripheral circuit; Keep watch on this device switching state, the surveillance equipment of cable connection status is connected with control device between the two-shipper switching device shifter that main hot computer mode fully and redundant server switch;
The bridging chip group is made up of PCI-E bridging chip and PCI bridging chip;
Memory is the electrically-erasable read-only memory, respectively with PCI-E bridging chip and PCI bridging chip;
Control device is to carry out logic control by the CPLD chip, and descending data are encoded and transmitted, and the upstream data of accepting is resolved and decoded;
Also comprise timer in the control device; Also comprise frequency divider in the control device; Also comprise the chip that is used to monitor SCM program running status, cable interface and cable status; The interface section of this device all makes with the light lotus root and isolates; Communication between this device and another device is accomplished by DB25 interface and cable.
The beneficial effect that the above-mentioned technological means that the present invention takes is brought is to intercourse through the information of both sides' hardware device to realize; When both sides' information disunity, can come to confirm at last through network; The same function that realizes with the method for arbitrating like this, and on hardware device, lack one, promptly saved hardware cost; Reduced the failure rate that the hardware device fault is brought again, accomplished on performance that simultaneously the multiple spot fault also can judge.
Description of drawings
Fig. 1 is the theory diagram of this switching device shifter;
Fig. 2 is the logic function figure of this switching device shifter;
Fig. 3 is the watchdog circuit figure in this switching device shifter logical operation control unit (CPLD);
Fig. 4 is the divider circuit figure in this switching device shifter logical operation control unit (CPLD);
Fig. 5 is the timer circuit figure in this switching device shifter logical operation control unit (CPLD);
Fig. 6 is the part sketch map of this switching device shifter panel.
Main main part and label
The two-shipper switching device shifter that 100 redundant servers switch
101 logical operation control units (CPLD)
102 smooth lotus root spacer assemblys
103A E2PROM memory
103B E2PROM memory
104 PCI-E connectors
105 DB25 connecting lines
106 PCI-E bridging chips
107 PCI bridging chips
108 power supplys
109 monitoring arrangements
Timer among the 111 logical operation control unit CPLD
Frequency divider among the 112 logical operation control unit CPLD
House dog among the 113 logical operation control unit CPLD
114 core buffer BUF
115 pins
116 LocalBus interfaces
Embodiment
For making the object of the invention, technical characterictic and effect thereof that further understanding arranged, lift preferred embodiment at present and cooperate diagram to specify as follows.
The suitable working environment of this device is that operating ambient temperature is between 0 degree to 60 degree; The relative humidity of operational environment is between 5% to 90%, and nothing is condensed; (ROM) the storage condition temperature is between-20 degree to 70 degree; The relative humidity of storage condition is that nothing is condensed between 5% to 90%.
The theory diagram of the two-shipper switching device shifter 100 that switches for redundant server shown in Figure 1, this switching device shifter is to be basis with the PCI-E expansion card, follows the PCI-E agreement, the support hot plug.This device is to be connected with master server or heat server connection fully with PCI Mezzanine Card, in order to the information transmission of computer and this device; Communication and information transmission between two-shipper switching device shifter 100 devices that redundant server switches are to be accomplished by the DB25 connecting line.
Two-shipper switching device shifter 100 inside that redundant server switches to the processing of downlink data at first the bridging chip 106 of PCI-E unstring the high speed information universal serial bus of PCI-E connector 104; The data storing of unstringing realizes the conversion from PCI-E to PCI in E2PROM103A; By PCI bridging chip 107 data of unstringing are read operation from E2PROM holder 103A then and realize the conversion from PCI to LOCAL BUS, the data storing after the conversion is in E2PROM holder 103B.Processing to upstream data is that the data storing after the conversion is in E2PROM holder 103B by 107 conversions of operation from LOCAL BUS to PCI of PCI bridging chip; The bridging chip 106 that data read among the E2PROM holder 103B is got PCI-E is stored into data and bit stringization among the E2PROM holder 103A, and information via PCI-E connector 104 is passed back to computer.
The MAXII series CPLD chip EPM240 that process chip in the present embodiment among the logical operation control unit CPLD101 is used ALTERA company carries out logic control; Descending data are encoded and transmitted, the upstream data that receives is resolved and decoded.The two-shipper handover information is produced and the received pulse signal through logical operation control unit CPLD101 by monitoring host computer, accomplishes the logical drive of input and output through peripheral circuits such as optocoupler 102 and triodes.The interface section of device all isolates through optocoupler 102, considers long-distance transmissions, power supply 108 provide output will adopt 0 ~+pulse of 12Vpp transmits.Monitoring arrangement 109 is connected with logical operation control unit CPLD101.
Data in the program of logical operation control unit CPLD101 as shown in Figure 2 are from counter 111, and the data that frequency divider 112 and house dog 113 obtain are as the foundation of logic determines.Counter 111 obtains the data of the other side's state; Frequency divider 112 produces the status data of our computer; House dog 113 is the detections to cable status.Counter 111, frequency divider 112 is put into memory cache district BUF114 with the data that house dog 113 obtains, and pin one 15 is connected with CPLD chip EPM240, carries out logical process and passes through LocalBus interface 116 information is passed with controlling.Two-shipper switching device shifter 100 mainly is to come the present residing state of analysis and judgement both sides industrial computer (main frame, slave, free time, mistake) according to the information that the both sides that obtain send, and judges whether to switch and report fault according to state.Concrete program is not done detailed elaboration here, the workflow between two devices here is described below at present.
Adopt 20 core cables to connect between two switching device shifters, transmit 10 signals altogether mutually.Wherein 4 signals are to monitor cable and the other side's connector state mutually.2 signals are that local state is issued the other side, and 2 signals are passed to this machine with the other side's state, and also having 2 signals is to send the own integrated circuit board of signal indication mutually to exist.When reception and transmission data, adopt optocoupler 102 to isolate, isolate to realize two-shipper.
The D1 position of switching device shifter, D0 position and ON_OFF_STAT_OUT position pass to the other side's D3 position, D2 position and ON_OFF_STAT_IN position with we's state with the form of pulse, and the other side's integrated circuit board is taken into its isolation through optocoupler; Read in the state of the other side's D1 position, D0 position and ON_OFF_STAT_OUT position like Fig. 2 and same we's shown in Figure 5 D3 position, D2 position and ON_OFF_STAT_IN position,
Like Fig. 2 and D1D0 shown in Figure 4 position is that state with our server sends the other side's integrated circuit board to, and then send the work at present state of judging our server in the other side's server.The D3D2 position is that the state with the other side's server sends this card to, and then send the work at present state of judging the other side's server in our server.ON_OFF_STAT judges the position whether the other side's integrated circuit board exists; The ON_OFF_STAT_IN position of each integrated circuit board is sent pulse signal to the ON_OFF_STAT_OUT position of the other side's integrated circuit board and is represented own integrated circuit board operate as normal; When the ON_OFF_STAT_OUT position can not receive the pulse signal of the other side's integrated circuit board; Expression the other side integrated circuit board is made mistakes, and simultaneously this information is sent in our server.
Like Fig. 2 and S0 shown in Figure 3, S1, S2, the S3 position is the mode bit of monitoring cable and the other side's connector situation mutually.Each limit is respectively at connector head place and a pair of pin of each short circuit of connector holder place.If cable breaks off, then the signal that obtains of the S0 of switching device shifter and S1 all is a height; If connector is not inserted, the signal of S0 is low so, and the signal of S1 is high.
The S0 position is to judge whether stube cable has damage, and its operation principle is: the two core cable of S0 position is carried out short circuit at cable away from an end of our connector.As crossing finally what obtain through optocoupler is low level signal, and the cable operate as normal is described; Otherwise the somewhere is damaged in the middle of the explanation cable.The S1 position is to judge whether the other side's connector is inserted, and its operation principle is: the S3 position (2 pins that promptly link to each other with our S1) of the other side's integrated circuit board is located its two pins short circuit at female seat of its connector.As crossing finally what obtain through optocoupler is low level signal, and it is normal explain that the other side's connector connects, otherwise explains that connector does not insert firmly.
Fig. 6 is the panel of this switching device shifter of expression, and jtag interface, DB25 interface and 7 indicator lights are arranged, and 2 red leds are represented cable state and connector state respectively, and lamp goes out and representes that then cable breaks down or connector does not insert firmly; 2 green indicating lamps represent that respectively current book server is in (main frame or slave) under which kind of mode of operation; 1 amber light is represented our integrated circuit board operating state, and the our switching device shifter of the bright explanation of lamp is not worked.2 green lights are represented our switching device shifter operating state.The state description of indicator light such as following table:
Protection scope of the present invention is not limited to the explanation of the specific embodiment of the invention, as long as but the combination of satisfying the technical characterictic of claims of the present invention just fallen within protection scope of the present invention.
Claims (8)
1. one kind is used for the two-shipper switching device shifter that redundant server switches; It is characterized in that; Comprise that the data that computer is received are unstringed and with the PCI-E bridging chip and the PCI bridging chip of the data string that produces in the control device; Storage PCI-E bridging chip and PCI bridging chip conversion back memory of data; Produce and received pulse signal and the control device that carries out logical operation and control, accomplish optocoupler and the triode peripheral circuit of two-shipper switching signal input and output logical drive, keep watch on the surveillance equipment of cable connection status between the two-shipper switching device shifter of this two-shipper switching device shifter switching state, main hot computer mode fully and redundant server switching; Surveillance equipment is connected with control device; Control device is connected with optocoupler and triode peripheral circuit, and control device is connected with the PCI bridging chip through Local BUS, and the PCI-E bridging chip is connected with the PCI bridging chip through pci interface.
2. a kind of two-shipper switching device shifter that redundant server switches that is used for according to claim 1 is characterized in that described memory is the electrically-erasable read-only memory, is connected with the PCI bridging chip with the PCI-E bridging chip respectively.
3. a kind of two-shipper switching device shifter that redundant server switches that is used for according to claim 1; It is characterized in that described control device is to carry out logic control by the CPLD chip; Descending data are encoded and transmitted, the upstream data of accepting is resolved and decoded.
4. a kind of two-shipper switching device shifter that redundant server switches that is used for according to claim 1 is characterized in that also comprising in the control device timer.
5. a kind of two-shipper switching device shifter that redundant server switches that is used for according to claim 1 is characterized in that also comprising in the control device frequency divider.
6. a kind of two-shipper switching device shifter that redundant server switches that is used for according to claim 1 is characterized in that also comprising in the control device chip that is used to monitor SCM program running status, cable interface and cable status.
7. a kind of two-shipper switching device shifter that redundant server switches that is used for according to claim 1 is characterized in that the interface section of said two-shipper switching device shifter all uses optocoupler to isolate.
8. a kind of two-shipper switching device shifter that redundant server switches that is used for according to claim 1 is characterized in that the communication between said two-shipper switching device shifter and another two-shipper switching device shifter is accomplished by DB25 interface and cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810173676A CN101741532B (en) | 2008-11-07 | 2008-11-07 | Two-computer switching device for redundant server switching |
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| CN200810173676A CN101741532B (en) | 2008-11-07 | 2008-11-07 | Two-computer switching device for redundant server switching |
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| CN101741532A CN101741532A (en) | 2010-06-16 |
| CN101741532B true CN101741532B (en) | 2012-09-26 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989903B (en) * | 2010-12-03 | 2013-03-13 | 国电南瑞科技股份有限公司 | Dual-machine redundancy by-mouth switching method of comprehensive monitoring pre-communication controller |
| CN104200148B (en) * | 2014-08-25 | 2017-06-09 | 浪潮集团有限公司 | A kind of smart card redundancy switching method based on autonomous domestic redundant server |
| CN109429116A (en) * | 2017-08-28 | 2019-03-05 | 广东核电合营有限公司 | Redundant backup system based on nuclear power monitoring |
| CN108009047B (en) * | 2017-11-24 | 2021-11-02 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Dual-computer hot standby model and implementation method |
| CN109361532B (en) * | 2018-09-11 | 2021-08-24 | 上海天旦网络科技发展有限公司 | High availability system and method for network data analysis and computer readable storage medium |
| CN112198788B (en) * | 2020-09-16 | 2024-02-27 | 中国铁道科学研究院集团有限公司通信信号研究所 | Implementation method of dual-machine hot standby system based on third state |
| CN117667531B (en) * | 2024-01-31 | 2024-06-07 | 北京城建智控科技股份有限公司 | Four-machine hot standby redundancy processing method, system, electronic equipment and storage medium |
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