CN207382350U - The one-way communication system and board of nuclear power station security level system and non-security grade system - Google Patents
The one-way communication system and board of nuclear power station security level system and non-security grade system Download PDFInfo
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- CN207382350U CN207382350U CN201721431999.0U CN201721431999U CN207382350U CN 207382350 U CN207382350 U CN 207382350U CN 201721431999 U CN201721431999 U CN 201721431999U CN 207382350 U CN207382350 U CN 207382350U
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Abstract
The utility model belongs to the technical field of I＆C system, in order to solve non-security grade system in the prior art caused by safe level system the technical issues of potential risk；The utility model provides a kind of one-way communication system and board suitable for nuclear power station security level system and non-security grade system；The system comprises：Communication card and opto-electronic conversion board, being capable of transmission telecommunications 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 cannot be by the electric signal transmission received to the first physical layer transceiver.
Description
Technical field
The utility model is related to the technical field of I＆C system more particularly to suitable for nuclear power station security level system and non-peace
The one-way communication system and board of full grade system, more particularly, to one kind be suitable for nuclear power station security level system with it is non-security
Between grade 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 grade system is not only
It is that safe level internal system uses network communication technology, and also extends to the number between safe level system and non-security grade 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 seriously affect the execution of whole system function, especially non-security
If level-systems by influence the signal transmission of security of system to safe level system when, certainly will to the safety of reactor and
The safety of entire nuclear power station will all bring fatal influence.Therefore the communication process of safe level system and non-security grade system needs
Ensure independence, and avoided 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 grade and non-security grade control system entirely, then only allow to flow to non-security grade from safe level, carry out unidirectional
Communication.
But utility model people has found in the process of implementing the utility model：The nuclear plant digital that the prior art provides
In system, the communication with non-security grade system of safe level system is the one-way communication that logically ensures rather than from physics mostly
Upper guarantee one-way 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
The communication of safe level system is influenced.
Utility model content
In order to solve the technology of non-security grade system potential risk caused by safe level system in the prior art
Problem；The utility model provides a kind of one-way communication system and plate suitable for nuclear power station security level system and non-security grade system
Card, can realize safe level system and non-security grade system physical one-way communication so that nuclear plant digital from hardware view
Safe level system is more safe and reliable.
To achieve these goals, technical solution provided by the utility model includes：
On the one hand the utility model provides the one-way communication system of a kind of nuclear power station security level system and non-security grade system,
It is characterised in that it includes：
Safe level system is provided with communication card and opto-electronic conversion board, the communication card and the photoelectric conversion plate
It being capable of transmission telecommunications number between card；
Non-security grade system is provided with the gateway communication interface board being connected with the opto-electronic conversion board；
Wherein, the opto-electronic conversion board include the first physical layer transceiver and the second physical layer transceiver, described first
Physical layer transceiver is connected with the communication card, and second physical layer transceiver connects with the gateway communication interface board
It connects；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 cannot be by the electric signal transmission received to first physical layer transceiver.
The utility model embodiment preferably, distinguish by first physical layer transceiver and second physical layer transceiver
It is provided with data sending port and data receiving port, the data sending port of first physical layer transceiver and described second
The data receiver port connection of physical layer transceiver, the data receiver port of first physical layer transceiver disconnect and described the
The connection of two physical layer transceiver data sending ports.
The utility model embodiment preferably, passes through between the opto-electronic conversion board and the gateway communication interface board
Ethernet protocol carries out data transmission.
The utility model embodiment preferably, the system also includes：The network interface card being arranged in the non-security grade system,
The network interface card is connected with the gateway communication interface board.
Preferably, first physical layer transceiver and the second physical layer transceiver are mutually similar to the utility model embodiment
The chip of type.
On the other hand the utility model also provides the one-way communication of a kind of nuclear power station security level system and non-security grade system
Board, which is characterized 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 grade 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 cannot receive the electric signal transmission received to first physical layer
Send out device.
The utility model embodiment preferably, distinguish by first physical layer transceiver and second physical layer transceiver
It is provided with data sending port and data receiving port, the data sending port of first physical layer transceiver and described second
The data receiver port connection of physical layer transceiver, the data receiver port of first physical layer transceiver disconnect and described the
The connection of two physical layer transceiver data sending ports.
The utility model embodiment preferably, between second physical layer transceiver and the gateway communication interface board
Carried out data transmission by Ethernet protocol.
Preferably, first physical layer transceiver and the second physical layer transceiver are mutually similar to the utility model embodiment
The chip of type.
Preferably, the one-way communication board is arranged in the safe level system the utility model embodiment.
The above-mentioned technical proposal provided using the application, can at least obtain one kind in following advantageous effect：
1st, by opto-electronic conversion board, two physical layer transceivers (PHY chip) physically realize one-way communication, so
It can physically realize safe level system and non-security grade system physical one-way communication.
2nd, non-security grade system need to be only inputted to safe level system between two physical layer transceivers (PHY chip)
Input port, can realize physically unidirectional communication without connection (disconnecting) between output port, without complicated
Hardware device and complicated logic control；Therefore, the project development cycle is not interfered with using the technical solution of the application.
3rd, two physical layer transceivers (PHY chip) of opto-electronic conversion board use two identical chips, can be to avoid
Various materials save handling of goods and materials cost.
The other feature and advantage of utility model will illustrate in the following description, also, partly become from specification
It obtains it is clear that being understood by implementing the technical solution of the utility model.The purpose of this utility model and other advantages
It can realize and obtain by structure and/or flow specifically noted in specification, claims and attached drawing.
Description of the drawings
Fig. 1 is that a kind of nuclear power station security level system that the utility model embodiment provides is led to the unidirectional of non-security grade system
Interrogate the schematic diagram of board.
Fig. 2 is that a kind of nuclear power station security level system that the utility model embodiment provides is led to the unidirectional of non-security grade system
The schematic diagram of news system.
Specific embodiment
The embodiment of the utility model is described in detail below with reference to accompanying drawings and embodiments, whereby to the utility model
How application technology means solve technical problem, and the realization process for reaching technique effect can fully understand and implement according to this.
It should be noted that these specific descriptions simply allow those of ordinary skill in the art to be more prone to, clearly understand this practicality newly
Type rather than the limited explanation to the utility model；As long as and do not form conflict, each embodiment in the utility model with
And each feature in each embodiment can be combined with each other, the technical solution formed the scope of protection of the utility model it
It is interior.
In addition, step shown in the flowchart of the accompanying drawings can be in the control system of a such as group controller executable instruction
Middle execution, although also, show logical order in flow charts, it in some cases, can be to be different from herein
Order performs shown or described step.
Below by the drawings and specific embodiments, the technical solution of the utility model is described in detail：
Embodiment
As shown in Figure 1, the present embodiment provides a kind of suitable for the unidirectional of nuclear power station security level system and non-security grade 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,
The full name of PHY 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 standard interface is provided to data link layer device.
For the second physical layer transceiver 120 being connected with gateway communication interface board card in non-security grade 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 cannot 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 port 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 120 data sending port 122 of the second physical layer transceiver.
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 specific embodiment of the present embodiment is solved, not to the restriction of the present embodiment technical solution, those skilled in the art should be able to
Understand, above-mentioned " first " and " second " can also be exchanged or be 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 in Fig. 1
Physical layer transceiver is also provided with physical layer transceiver on the right side of the second physical layer transceiver 120, wherein it is increased these
The connection mode of physical layer transceiver and above-mentioned first physical layer transceiver, 110 or second physical layer transceiver 120 can be
It is two-way or be arranged to reference to Fig. 1 unidirectional；These can voluntarily increase according to the demand of developer；But these change
Into technical solution belong to the protection domain that the embodiment of the present application corresponds to technical solution.
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 grade 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 grade 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
It being capable of transmission telecommunications number between opto-electronic conversion board 100；
Non-security grade 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, the full name of PHY 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 grade 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 cannot 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 port 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 120 data sending port 122 of the second physical layer transceiver.
The present embodiment preferably, by Ethernet protocol into line number between opto-electronic conversion board and gateway communication interface board
According to transmission.
Preferably, above system further includes the present embodiment：The network interface card being arranged in non-security grade system, network interface card lead to gateway
Believe the connection of interface board.
More specifically, technical solution provided in this embodiment 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 mode, so that physically
Complete one-way communication in logic, to solve the problems, such as safe level system and non-security grade system one-way data transfer.
As shown in Figure 1 and Figure 2, opto-electronic conversion board provided in this embodiment 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 grade system to safe level system orientation, will safety in system worked well
Grade grid communication electric signal is converted to optical signal and is sent to non-security grade system, but can not receive non-security grade 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 passes through PHY chip and pass optical signal
It send to the gateway communication interface board of non-security grade system, 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 that non-security grade system is transferred can not be received, i.e., has physically switched to link, has realized safe level system and non-peace
Full grade system physical one-way communication.
It is illustrated so that above 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 grade system sends alarm signal, only allows the one-way communication of data, i.e., flows to non-security grade 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 convert electrical signals to optical signal, and pass through PHY chip and optical signal is sent to non-security grade system
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, data are reached the light of safe level system by gateway by gateway communication interface board
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 that grade system is transferred, i.e., physically switched to link, realized safe level system and non-security grade system physical is unidirectional
Communication.
The above-mentioned technical proposal provided using the application, can at least obtain one kind in following advantageous effect：
1st, by opto-electronic conversion board, two physical layer transceivers (PHY chip) physically realize one-way communication, so
It can physically realize safe level system and non-security grade system physical one-way communication.
2nd, non-security grade system need to be only inputted to safe level system between two physical layer transceivers (PHY chip)
Input port, can realize physically unidirectional communication without connection (disconnecting) between output port, without complicated
Hardware device and complicated logic control；Therefore, the project development cycle is not interfered with using the technical solution of the application.
3rd, two physical layer transceivers (PHY chip) of opto-electronic conversion board use two identical chips, can be to avoid
Various materials save handling of goods and materials cost.
Finally it should be noted that above description is only the most preferred embodiment of the utility model, not to this practicality
The new limitation done in any form.Any those skilled in the art are not departing from technical solutions of the utility model model
In enclosing, all using the way and technology contents of the disclosure above technical solutions of the utility model are made many possible variations and
Simple replacement etc., these belong to the scope of technical solutions of the utility model protection.
Claims (10)
1. a kind of one-way communication system of nuclear power station security level system and non-security grade system, which is characterized 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 transmission telecommunications number；
Non-security grade system 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 cannot be by the electric signal transmission received to first physical layer transceiver.
2. system according to claim 1, which is characterized in that first physical layer transceiver and second physical layer
Transceiver is respectively arranged with data sending port and data receiving port, the data sending port 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 port.
3. system according to claim 1, which is characterized 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, which is characterized in that further include：The net being arranged in the non-security grade system
Card, the network interface card are connected with the gateway communication interface board.
5. system according to claim 1, which is characterized in that first physical layer transceiver and the second physical layer transceiver
Device is the chip of same type.
6. a kind of one-way communication board of nuclear power station security level system and non-security grade system, which is characterized 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 grade 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 cannot be by the electric signal transmission received to first physical layer transceiver
Device.
7. board according to claim 6, which is characterized in that first physical layer transceiver and second physical layer
Transceiver is respectively arranged with data sending port and data receiving port, the data sending port 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 port.
8. board according to claim 6, which is characterized 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, which is characterized 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, which is characterized in that the one-way communication board is arranged on the safe level system
In system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721431999.0U CN207382350U (en) | 2017-10-31 | 2017-10-31 | The one-way communication system and board of nuclear power station security level system and non-security grade system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721431999.0U CN207382350U (en) | 2017-10-31 | 2017-10-31 | The one-way communication system and board of nuclear power station security level system and non-security grade system |
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| Publication Number | Publication Date |
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| CN207382350U true CN207382350U (en) | 2018-05-18 |
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| CN201721431999.0U Active CN207382350U (en) | 2017-10-31 | 2017-10-31 | The one-way communication system and board of nuclear power station security level system and non-security grade system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683513A (en) * | 2018-05-31 | 2018-10-19 | 北京广利核系统工程有限公司 | The one-way communication system and board of nuclear power station security level system and non-security grade system |
-
2017
- 2017-10-31 CN CN201721431999.0U patent/CN207382350U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683513A (en) * | 2018-05-31 | 2018-10-19 | 北京广利核系统工程有限公司 | The one-way communication system and board of nuclear power station security level system and non-security grade system |
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