CN107634972A - The one-way communication system and board of nuclear power station security level system and non-security level system - Google Patents
The one-way communication system and board of nuclear power station security level system and non-security level system Download PDFInfo
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- CN107634972A CN107634972A CN201711040785.5A CN201711040785A CN107634972A CN 107634972 A CN107634972 A CN 107634972A CN 201711040785 A CN201711040785 A CN 201711040785A CN 107634972 A CN107634972 A CN 107634972A
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Abstract
The invention belongs to the technical field of I＆C system, in order to solve the technical problem of non-security level system potential risk to caused by safe level system present in prior art；The present invention provides a kind of one-way communication system and board suitable for nuclear power station security level system and non-security level system；The system includes：Communication card and opto-electronic conversion board, being capable of transmitting telecommunication number between communication card and opto-electronic conversion board；The gateway communication interface board being connected with opto-electronic conversion board；Wherein, opto-electronic conversion board includes the first physical layer transceiver and the second physical layer transceiver, and the first physical layer transceiver is connected with communication card, and the second physical layer transceiver is connected with gateway communication interface board；And the first physical layer transceiver can by the electric signal received by optical signal transmission to the second physical layer transceiver, and the second physical layer transceiver can not be by the electric signal transmission received to the first physical layer transceiver.
Description
Technical field
The present invention relates to the technical field of I＆C system, more particularly to suitable for nuclear power station security level system and non-security level
The one-way communication system and board of system, it is applied to nuclear power station security level system and non-security level system more particularly, to one kind
Between system, system and board based on Ethernet physics one-way communication.
Background technology
As computer and digitizing technique are in the application in control systems of nuclear power plant field, digital safety level system is not only
It is that safe level internal system uses the network communications technology, and the number also extended between safe level system and non-security level system
According to transmission；But for safe level control system, can security, the reliability of network smooth perform function for system
There is most important meaning；Can not realizing for network function will have a strong impact on the execution of whole system function, especially non-security
If level-systems by the signal for influenceing security of system transmit to safe level system when, certainly will to the safety of reactor and
The safety of whole nuclear power station will all bring fatal influence.Therefore the communication process of safe level system and non-security level system, need
Ensure independence, and avoid as far as possible from the data flow compared with low level security system to higher security level system；I.e. if pacified
There is signal communication between level and non-security level control system entirely, then only allow to flow to non-security level from safe level, carry out unidirectional
Communication.
But inventor has found during the present invention is realized：In the nuclear plant digital system that prior art provides,
The communication with non-security level system of safe level system is the one-way communication logically ensured mostly, rather than is physically ensured single
To communication；But the logic of above-mentioned one-way transmission is still likely to occur mistake, so not thorough solution pacifies by no means system to safe level
The communication of system influences.
The content of the invention
In order to solve the technology of non-security level system potential risk to caused by safe level system present in prior art
Problem；The present invention provides a kind of one-way communication system and board suitable for nuclear power station security level system and non-security level system,
Safe level system and non-security level system physical one-way communication can be realized from hardware view so that nuclear plant digital safety
Level system is more safe and reliable.
To achieve these goals, technical scheme provided by the invention includes：
One aspect of the present invention provides the one-way communication system of a kind of nuclear power station security level system and non-security level system, and it is special
Sign is, including：
Safe level system, it is provided with communication card and opto-electronic conversion board, the communication card and the photoelectric conversion plate
Being capable of transmitting telecommunication number between card；
Non-security level system, it is provided with the gateway communication interface board being connected with the opto-electronic conversion board；
Wherein, the opto-electronic conversion board includes the first physical layer transceiver and the second physical layer transceiver, and described first
Physical layer transceiver is connected with the communication card, and second physical layer transceiver connects with the gateway communication interface board
Connect；And the electric signal received can be passed through optical signal transmission to second physical layer by first physical layer transceiver
Transceiver, and second physical layer transceiver can not be by the electric signal transmission received to first physical layer transceiver.
Preferably, first physical layer transceiver and second physical layer transceiver are set the embodiment of the present invention respectively
There are data sending terminal mouth and data receiver port, the data sending terminal mouth of first physical layer transceiver and second physics
The data receiver port connection of layer transceiver, the data receiver port of first physical layer transceiver disconnect and second thing
Manage the connection of layer Transceiver Data sending port.
The embodiment of the present invention preferably, passes through ether between the opto-electronic conversion board and the gateway communication interface board
FidonetFido carries out data transmission.
Preferably, the system also includes the embodiment of the present invention：The network interface card being arranged in the non-security level system, it is described
Network interface card is connected with the gateway communication interface board.
Preferably, first physical layer transceiver and the second physical layer transceiver are same type to the embodiment of the present invention
Chip.
Another aspect of the present invention also provides the one-way communication board of a kind of nuclear power station security level system and non-security level system,
It is characterised in that it includes：
For the first physical layer transceiver being connected with nuclear power station security level intra-system communication board；
For the second physical layer transceiver being connected with gateway communication interface board card in non-security level system；
Wherein, the electric signal received can be passed through optical signal transmission to described second by first physical layer transceiver
Physical layer transceiver, and second physical layer transceiver can not receive the electric signal transmission received to first physical layer
Send out device.
Preferably, first physical layer transceiver and second physical layer transceiver are set the embodiment of the present invention respectively
There are data sending terminal mouth and data receiver port, the data sending terminal mouth of first physical layer transceiver and second physics
The data receiver port connection of layer transceiver, the data receiver port of first physical layer transceiver disconnect and second thing
Manage the connection of layer Transceiver Data sending port.
The embodiment of the present invention preferably, passes through between second physical layer transceiver and the gateway communication interface board
Ethernet protocol carries out data transmission.
Preferably, first physical layer transceiver and the second physical layer transceiver are same type to the embodiment of the present invention
Chip.
Preferably, the one-way communication board is arranged in the safe level system embodiment of the present invention.
The above-mentioned technical proposal provided using the application, can at least obtain one kind in following beneficial effect：
1st, by opto-electronic conversion board, two physical layer transceivers (PHY chip) physically realize one-way communication, so
Can physically realizes safe level system and non-security level system physical one-way communication.
2nd, non-security level system need to be only inputted to safe level system between two physical layer transceivers (PHY chip)
Input port, (disconnect) can without connection between output port and realize physically unidirectional communication, without complexity
Hardware device and complicated logic control；Therefore, the project development cycle is not interfered with using the technical scheme of the application.
3rd, two physical layer transceivers (PHY chip) of opto-electronic conversion board use two identical chips, can avoid
Various materials, save handling of goods and materials cost.
The further feature and advantage of invention will illustrate in the following description, also, partly become aobvious from specification
And be clear to, or understood by implementing technical scheme.The purpose of the present invention and other advantages can be by illustrating
Specifically noted structure and/or flow are realized and obtained in book, claims and accompanying drawing.
Brief description of the drawings
Fig. 1 is the one-way communication plate of a kind of nuclear power station security level system provided in an embodiment of the present invention and non-security level system
The schematic diagram of card.
Fig. 2 is the one-way communication system of a kind of nuclear power station security level system provided in an embodiment of the present invention and non-security level system
The schematic diagram of system.
Embodiment
Embodiments of the present invention are described in detail below with reference to drawings and Examples, and how the present invention is applied whereby
Technological means solves technical problem, and the implementation process for reaching technique effect can fully understand and implement according to this.Need to illustrate
, these specific descriptions are to allow those of ordinary skill in the art to be more prone to, clearly understand the present invention, rather than to this hair
Bright limited explanation；And if conflict is not formed, each embodiment in the present invention and each spy in each embodiment
Sign can be combined with each other, and the technical scheme formed is within protection scope of the present invention.
In addition, can be in the control system of a such as group controller executable instruction the flow of accompanying drawing illustrates the step of
Middle execution, although also, show logical order in flow charts, in some cases, can be with different from herein
Order performs shown or described step.
Below by the drawings and specific embodiments, technical scheme is described in detail：
Embodiment
As shown in figure 1, the present embodiment provide it is a kind of suitable for the unidirectional of nuclear power station security level system and non-security level system
Communication Card, also referred hereinafter as opto-electronic conversion board 100, opto-electronic conversion board 100 include：
For be connected with nuclear power station security level intra-system communication board the first physical layer transceiver (also referred to as PHY chip,
PHY full name is Physical Layer Protocol, is the abbreviation of 10/100M ethernet PHY transceivers) 110；PHY
The physical layer of chip defines data transmission with receiving required electricity and optical signal, line status, clock reference, data encoding
With circuit etc., and provide standard interface to data link layer device.
For the second physical layer transceiver 120 being connected with gateway communication interface board card in non-security level system；Preferably,
Second physical layer transceiver 120 is identical with the first physical layer transceiver 110, and certain those skilled in the art can also be according to need
Ask, select the chip of different size, but the first physical layer transceiver 110 and the second physical layer transceiver 120 need to meet with
Lower relation：
The electric signal received can be passed through optical signal transmission to the second physical layer transceiver by the first physical layer transceiver 110
Device 120, and the second physical layer transceiver 120 can not be by the electric signal transmission received to the first physical layer transceiver 110.
Preferably, the first physical layer transceiver 110 and the second physical layer transceiver 120 are respectively arranged with data to the present embodiment
Sending port 114,122 and data receiver port 112,124, the data sending terminal mouth 114 of the first physical layer transceiver 110 and
The data receiver port 124 of two physical layer transceivers 120 connects, and the data receiver port 112 of the first physical layer transceiver 110 is disconnected
Open the connection with the data sending terminal mouth 122 of the second physical layer transceiver 120.
It should be noted that above-mentioned " first " and " second " referred to is intended merely to those skilled in the art and is more prone to manage
The embodiment of the present embodiment is solved, not should be able to the restriction of the present embodiment technical scheme, those skilled in the art
Understand, above-mentioned " first " and " second " can also be exchanged, or are defined with other sequence numbers.In addition, opto-electronic conversion
Board 100 can also set more physical layer transceivers, such as the left side of the first physical layer transceiver 100 is also provided with Fig. 1
Physical layer transceiver, or physical layer transceiver is also provided with the right side of the second physical layer transceiver 120, wherein it is increased these
The connected mode of physical layer transceiver and the above-mentioned physical layer transceiver 120 of first physical layer transceiver 110 or second can be
Two-way or reference picture 1 is arranged to unidirectional；These can voluntarily increase according to the demand of developer；But these change
The technical scheme entered belongs to the protection domain that the embodiment of the present application corresponds to technical scheme.
Preferably, one-way communication board 100 is arranged in safe level system the present embodiment；Certain those skilled in the art are also
One-way communication board 100 can be arranged between independence and safe level system and non-security level system according to oneself demand, and
And it is arranged to independent module.
As shown in Fig. 2 the present embodiment also provides the one-way communication of a kind of nuclear power station security level system and non-security level system
System, the system include：
Safe level system (left-hand broken line frame), is provided with communication card 200 and opto-electronic conversion board 100, communication card 200
Being capable of transmitting telecommunication number between opto-electronic conversion board 100；
Non-security level system (right side dotted line frame), is provided with the gateway communication interface board being connected with opto-electronic conversion board 100
Card 300；
Wherein, opto-electronic conversion board 100 includes the first physics being connected with nuclear power station security level intra-system communication board 200
(also referred to as PHY chip, PHY full name is Physical Layer Protocol to layer transceiver, is 10/100M ethernet physical layers
The abbreviation of transceiver) 110；The physical layer of PHY chip defines data transmission with receiving required electricity and optical signal, circuit shape
State, clock reference, data encoding and circuit etc., and provide standard interface to data link layer device.
The second physical layer transceiver 120 being connected with gateway communication interface board card in non-security level system；Preferably, second
Physical layer transceiver 120 is identical with the first physical layer transceiver 110, and certain those skilled in the art can also select according to demand
The chip of different size is selected, but the first physical layer transceiver 110 and the second physical layer transceiver 120 need to meet with ShiShimonoseki
System：
The electric signal received can be passed through optical signal transmission to the second physical layer transceiver by the first physical layer transceiver 110
Device 120, and the second physical layer transceiver 120 can not be by the electric signal transmission received to the first physical layer transceiver 110.
Preferably, the first physical layer transceiver 110 and the second physical layer transceiver 120 are respectively arranged with data to the present embodiment
Sending port 114,122 and data receiver port 112,124, the data sending terminal mouth 114 of the first physical layer transceiver 110 and
The data receiver port 124 of two physical layer transceivers 120 connects, and the data receiver port 112 of the first physical layer transceiver 110 is disconnected
Open the connection with the data sending terminal mouth 122 of the second physical layer transceiver 120.
The present embodiment preferably, enters line number between opto-electronic conversion board and gateway communication interface board by Ethernet protocol
According to transmission.
Preferably, said system also includes the present embodiment：The network interface card being arranged in non-security level system, network interface card lead to gateway
Believe the connection of interface board.
More specifically, the technical scheme that the present embodiment provides is to prevent failure from expanding to safe level system from non-security system
System, and ensure one-way communication on logic-based, the present embodiment proposes a kind of physically unidirectional transmission means, so that physically
Complete one-way communication in logic, to solve the problems, such as safe level system and non-security level system one-way data transfer.
As shown in Figure 1 and Figure 2, the opto-electronic conversion board that the present embodiment provides is the one way propagation characteristic based on light, utilizes light
Fibre, which carries out signal transmission, can physically ensure that the process is unidirectional, feedback-less；So as to utilize optical medium and its transmission
The one-way feature of functions of the equipments, it is completely unidirectional realizing using optical fiber as transmission medium using safe level opto-electronic conversion board
Physical transmission channel on the basis of, by establishing software transmission passage, realize the unidirectional feedback-less transmission of data, and pass through system
Fixed corresponding secure transport mechanism, to solve under one-way transmission environment, transmits integrality, the reliability of data.
Opto-electronic conversion board wants energy normal use, and RX ports (sending port) must have optical signal, and board could activate simultaneously
Normal use.When opto-electronic conversion board is received due to RX ports without optical signal, safe level communication system can prompt equipment without even
Connect, it is impossible to normal use, will cause TX ports (receiving port) also without optical signal send, gateway communication interface board RX ports without
Optical signal receives, and can not also activate.Therefore the one-way communication opto-electronic conversion board that the present embodiment proposes, out of opto-electronic conversion board
Portion disconnects the RX ports respective links of non-security level system to safe level system orientation, will safety in system worked well
Level grid communication electric signal is converted to optical signal and is sent to non-security level system, but can not receive non-security level system
Optical signal.
In system worked well, communication data is sent to light by the communication card of safe level system in a manner of electric signal
The PHY chip of electricity conversion board, opto-electronic conversion board converts electrical signals to optical signal, and is passed optical signal by PHY chip
The gateway communication interface board of non-security level system is delivered to, communication data is transferred to gateway by gateway communication interface board；If not
The gateway of safe level system is abnormal, and when transmitting data to safe level system, gateway passes data by gateway communication interface board
To the opto-electronic conversion board of safe level system, due to already off, safe level system between PHY chip inside opto-electronic conversion board
The data of non-security level system transmission can not be received, i.e., have physically switched to link, realize safe level system and non-peace
Full level system physical one-way communication.
Illustrated so that said system is applied to nuclear power station as an example：The safe level system of the nuclear power station by communication mode to
Non-security level system sends alarm signal, only allows the one-way communication of data, i.e., flows to non-security level from safe level.In system just
Often during work, communication data is sent to the PHY of opto-electronic conversion board by the communication card of safe level system in a manner of electric signal
Chip, opto-electronic conversion board converts electrical signals to optical signal, and optical signal is sent into non-security level system by PHY chip
Gateway communication interface board, communication data is transferred to gateway by gateway communication interface board；If not the gateway of safe level system
Abnormal, when transmitting data to safe level system, gateway reaches data by gateway communication interface board the light of safe level system
Electricity conversion board, due to already off between PHY chip inside opto-electronic conversion board, safe level system can not receive non-security
The data of level system transmission, i.e., physically switched to link, realized safe level system and non-security level system physical is unidirectional
Communication.
The above-mentioned technical proposal provided using the application, can at least obtain one kind in following beneficial effect：
1st, by opto-electronic conversion board, two physical layer transceivers (PHY chip) physically realize one-way communication, so
Can physically realizes safe level system and non-security level system physical one-way communication.
2nd, non-security level system need to be only inputted to safe level system between two physical layer transceivers (PHY chip)
Input port, (disconnect) can without connection between output port and realize physically unidirectional communication, without complexity
Hardware device and complicated logic control；Therefore, the project development cycle is not interfered with using the technical scheme of the application.
3rd, two physical layer transceivers (PHY chip) of opto-electronic conversion board use two identical chips, can avoid
Various materials, save handling of goods and materials cost.
Finally it should be noted that described above is only highly preferred embodiment of the present invention, not the present invention is appointed
What formal limitation.Any those skilled in the art, it is without departing from the scope of the present invention, all available
The way and technology contents of the disclosure above make many possible variations and simple replacement etc. to technical solution of the present invention, these
Belong to the scope of technical solution of the present invention protection.
Claims (10)
- A kind of 1. one-way communication system of nuclear power station security level system and non-security level system, it is characterised in that including：Safe level system, is provided with communication card and opto-electronic conversion board, the communication card and the opto-electronic conversion board it Between being capable of transmitting telecommunication number；Non-security level system, it is provided with the gateway communication interface board being connected with the opto-electronic conversion board；Wherein, the opto-electronic conversion board includes the first physical layer transceiver and the second physical layer transceiver, first physics Layer transceiver is connected with the communication card, and second physical layer transceiver is connected with the gateway communication interface board；And And the electric signal received can be passed through optical signal transmission to second physical layer transceiver by first physical layer transceiver Device, and second physical layer transceiver can not be by the electric signal transmission received to first physical layer transceiver.
- 2. system according to claim 1, it is characterised in that first physical layer transceiver and second physical layer Transceiver is respectively arranged with data sending terminal mouth and data receiver port, the data sending terminal mouth of first physical layer transceiver It is connected with the data receiver port of second physical layer transceiver, the data receiver port of first physical layer transceiver is broken Open the connection with the second physical layer transceiver data sending terminal mouth.
- 3. system according to claim 1, it is characterised in that the opto-electronic conversion board and the gateway communication interface board Carried out data transmission between card by Ethernet protocol.
- 4. system according to claim 3, it is characterised in that also include：The net being arranged in the non-security level system Card, the network interface card are connected with the gateway communication interface board.
- 5. system according to claim 1, it is characterised in that first physical layer transceiver and the second physical layer transceiver Device is the chip of same type.
- A kind of 6. one-way communication board of nuclear power station security level system and non-security level system, it is characterised in that including：For the first physical layer transceiver being connected with nuclear power station security level intra-system communication board；For the second physical layer transceiver being connected with gateway communication interface board card in non-security level system；Wherein, the electric signal received can be passed through optical signal transmission to second physics by first physical layer transceiver Layer transceiver, and second physical layer transceiver can not be by the electric signal transmission received to first physical layer transceiver Device.
- 7. board according to claim 6, it is characterised in that first physical layer transceiver and second physical layer Transceiver is respectively arranged with data sending terminal mouth and data receiver port, the data sending terminal mouth of first physical layer transceiver It is connected with the data receiver port of second physical layer transceiver, the data receiver port of first physical layer transceiver is broken Open the connection with the second physical layer transceiver data sending terminal mouth.
- 8. board according to claim 6, it is characterised in that second physical layer transceiver and the gateway communication connect Carried out data transmission between oralia card by Ethernet protocol.
- 9. board according to claim 6, it is characterised in that first physical layer transceiver and the second physical layer transceiver Device is the chip of same type.
- 10. board according to claim 6, it is characterised in that the one-way communication board is arranged on the safe level system In system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711040785.5A CN107634972B (en) | 2017-10-31 | 2017-10-31 | Unidirectional communication system and board card of nuclear power station safety level system and non-safety level system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711040785.5A CN107634972B (en) | 2017-10-31 | 2017-10-31 | Unidirectional communication system and board card of nuclear power station safety level system and non-safety level system |
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| CN107634972B CN107634972B (en) | 2023-08-29 |
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| CN107634972B (en) | 2023-08-29 |
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