CN112291233A - Communication control device for controlling system information safety - Google Patents
Communication control device for controlling system information safety Download PDFInfo
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- CN112291233A CN112291233A CN202011162384.9A CN202011162384A CN112291233A CN 112291233 A CN112291233 A CN 112291233A CN 202011162384 A CN202011162384 A CN 202011162384A CN 112291233 A CN112291233 A CN 112291233A
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- protocol conversion
- relay
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/02—Network architectures or network communication protocols for network security for separating internal from external traffic, e.g. firewalls
- H04L63/0209—Architectural arrangements, e.g. perimeter networks or demilitarized zones
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/12—Arrangements for remote connection or disconnection of substations or of equipment thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Computer Hardware Design (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Communication Control (AREA)
Abstract
The invention discloses a communication control device for controlling system information safety, relates to the technical field of nuclear power control systems, and solves the problem that an engineer station has the vulnerability of a traditional IT system in the aspect of information safety due to a reserved interface of an engineer station and a Windows operating system. The system comprises a connecting line arranged between an engineer station and a control station, wherein a network sending connecting line is used for transmitting data sent to the engineer station by the control station; the network receiving connection line is used for transmitting data of the engineer station receiving control station. The network receiving connecting wire switching device is characterized by further comprising a communication switch (2) arranged on the network receiving connecting wire, wherein the communication switch (2) is used for manually controlling the on-off of the network receiving connecting wire. The invention separates the sending and receiving of communication; the on-off of the communication of sending and receiving can be manually controlled; an automatic control switch can be arranged, and communication of a certain path can be automatically cut off or connected according to the information safety requirement.
Description
Technical Field
The invention relates to the technical field of nuclear power control systems, in particular to a communication control device for controlling system information safety.
Background
With the rapid development of network technology and the frequent occurrence of various information security events, the information security in the field of industrial control is receiving more and more attention. The prior product is usually designed only by considering the functional requirements, but not considering the information security precaution. Today, the industrial control field is more and more important, and the requirements on certain functions are not met, but the requirements on industrial control information safety are also met. The nuclear power plant safety level DCS (digital control system) is used as a central nerve of the whole nuclear power plant, the functional safety of the DCS is concerned more, and the DCS also has to be concerned in the aspect of system information safety prevention.
The engineer station is used for controlling the configuration and management of the parameters of the system and the engineering application data, and meets the functional requirements of various stages such as engineering design, system debugging, operation maintenance and the like. When the engineer station downloads data, the engineer station is required to establish communication to the control station, and after the data downloading is completed, communication transmission from the engineer station to the control station needs to be disconnected based on the consideration of information safety, so that the network threat from the engineer station is thoroughly cut off when the control system operates. While control station to engineer station communications still need to be established based on maintenance, logging, etc.
In order to enhance usability and user experience, the engineer station adopts an industrial personal computer with a wider application range, and a reserved interface and a Windows operating system of the industrial personal computer enable the engineer station to have the vulnerability of a traditional IT system in the aspect of information safety. The main points are as follows:
1. vulnerabilities which are not repaired in time by the operating system are utilized by lawless persons, which may bring risks of unstable software operation, damaged data integrity, incapability of ensuring data confidentiality and the like;
2. the number of the services and ports automatically opened by the operating system is large, and the operating system is easy to be illegally utilized;
3. the reserved interface enables a U disk and other movable storage media to be easily accessed into a system, ferry attacks can be caused, and illegal software can easily invade an engineer station;
4. the network switch connected with the engineer station has vulnerability, the reserved interface of the network switch is likely to be attacked, and external equipment can damage the system through the network switch;
since the engineer station has vulnerability, it is necessary to increase the information security design in consideration of design, and therefore, communication control from the engineer station to the control station is necessary.
For a nuclear power station safety level DCS system, an engineer station needs to install, update and other operations according to standard requirements and in combination with the actual condition of the safety level DCS, and the engineer station transmits data to the safety level DCS in a switch control mode.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: since the engineer station has vulnerability, it is necessary to increase the information security design in consideration of design, and therefore, communication control from the engineer station to the control station is necessary. The present invention provides a communication control apparatus for controlling system information security that solves the above-described problems.
The invention is realized by the following technical scheme:
a communication control device for controlling system information safety comprises a connecting line arranged between an engineer station and a control station, wherein the connecting line comprises a network transmitting connecting line and a network receiving connecting line;
the network sending connecting line is used for transmitting data sent by the control station to the engineer station;
the network receiving connection line is used for transmitting data of the engineer station receiving control station.
The communication switch is arranged on the network receiving connecting line and used for manually controlling the connection and disconnection of the network receiving connecting line.
The system further comprises a communication switch arranged on the network sending connecting line, and the communication switch is used for manually controlling the connection and disconnection of the network sending connecting line.
Preferably, the system also comprises protocol conversion equipment, wherein the protocol conversion equipment is arranged on the network receiving connecting line and is communicated with the engineer station and the control station through the network receiving connecting line;
the relay and the protocol conversion equipment form a loop;
the protocol conversion equipment comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through controlling the switch of the protocol conversion module power supply.
Furthermore, the relay comprises a relay control end and a relay controlled end, the relay controlled end and the protocol conversion equipment form a loop, and the relay control end is controlled by an automatic control signal sent by the nuclear power station DCS main controller.
Further, the protocol conversion equipment is also arranged on a network sending connecting line, and the protocol conversion equipment is communicated with the engineer station and the control station through the network sending connecting line.
Preferably, the communication device further comprises a protocol conversion device, the protocol conversion device is arranged on the network receiving connecting line, and the protocol conversion device is connected with the communication switch in series;
the protocol conversion equipment is communicated with an engineer station and a control station through a network receiving connecting line;
the relay and the protocol conversion equipment form a loop;
the protocol conversion equipment comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end and a relay controlled end, the relay controlled end and the protocol conversion equipment form a loop, and the relay control end is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
The system further comprises the protocol conversion equipment arranged on the network sending connecting line, and the protocol conversion equipment is communicated with the engineer station and the control station through the network sending connecting line;
the relay and the protocol conversion equipment form a loop;
the protocol conversion equipment comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end and a relay controlled end, the relay controlled end and the protocol conversion equipment form a loop, and the relay control end is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
Preferably, the communication device further comprises a protocol conversion device, the protocol conversion device is arranged on the network receiving connecting line, and the protocol conversion device is connected with the communication switch in series;
the protocol conversion equipment is communicated with an engineer station and a control station through a network receiving connecting line;
the relay and the protocol conversion equipment form a loop;
the protocol conversion equipment comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end and a relay controlled end, the relay controlled end and the protocol conversion equipment form a loop, and the relay control end is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
The system further comprises the protocol conversion equipment arranged on the network sending connecting line, the protocol conversion equipment is connected with the communication switch in series, and the protocol conversion equipment is communicated with the engineer station and the control station through the network sending connecting line;
the relay and the protocol conversion equipment form a loop;
the protocol conversion equipment comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end and a relay controlled end, the relay controlled end and the protocol conversion equipment form a loop, and the relay control end is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
Preferably, the system also comprises a switch, wherein the switch is connected between the engineer station and the connecting line;
the plurality of connecting lines are in data communication with the switch respectively, and are physically separated;
the nuclear power station DCS main controller is arranged in the control station;
the switch and the engineer station are arranged in the computer room and are connected with the control station arranged in the cabinet through a connecting wire.
The invention has the following advantages and beneficial effects:
the invention can be used in a nuclear power station safety-level DCS control system, and can meet the requirement of information safety under the condition of meeting the function requirement of an engineer station according to the vulnerability analysis of the engineer station;
the communication controller of the present invention can separate the transmission and reception of communication; the on-off of the communication of sending and receiving can be manually controlled; an automatic control switch can be arranged, and communication of a certain path can be automatically cut off or connected according to the information safety requirement.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic diagram of a single-switch communication controller according to the present invention.
Fig. 2 is a schematic diagram of a dual-switch communication controller of the present invention.
Fig. 3 is a schematic diagram of a single-site auto-gating communication controller according to the present invention.
Fig. 4 is a schematic diagram of a communication controller for dual-mode automatic gating according to the present invention.
Fig. 5 is a schematic diagram of a communication controller for a single-gate plus dual-switch according to the present invention.
Fig. 6 is a typical usage diagram of the communication controller of the present invention for a nuclear power plant safety level DCS.
Reference numbers and corresponding part names in the drawings:
11. a relay control terminal; 12. a relay controlled end; 2. a communication switch; 3. a protocol conversion device.
Detailed Description
Before any embodiments of the invention are explained in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced or of being carried out in various ways. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive changes, are within the scope of the present invention.
The invention is implemented in a safety level DCS control system of a nuclear power plant, a field control station transmits data to an engineer station without control, a physical link for transmitting the data to equipment such as the field control station by a communication controller is in an open state when the system operates normally, the physical link is closed when the data needs to be downloaded to the field, and the physical isolation between the engineer station and the control system is realized, namely, a communication switch 2 is an entity structural switch and a non-virtual data link. While the communication link from the site control station to the engineer station may be always on.
The method is implemented on the basis of the following technical scheme:
a communication control device for controlling system information safety comprises a connecting line arranged between an engineer station and a control station, wherein the connecting line comprises a network transmitting connecting line and a network receiving connecting line;
the network sending connecting line is used for transmitting data sent by the control station to the engineer station;
the network receiving connection line is used for transmitting data of the engineer station receiving control station.
The specific embodiment is as follows:
example 1: the network receiving connecting wire switching device further comprises a communication switch 2 arranged on the network receiving connecting wire, and the communication switch 2 is used for manually switching on and off the network receiving connecting wire.
Example 2: the device further comprises a communication switch 2 arranged on the network transmission connecting line, and the communication switch 2 is used for manually controlling the connection and disconnection of the network transmission connecting line.
Example 3: the system also comprises a protocol conversion device 3, wherein the protocol conversion device 3 is arranged on a network receiving connecting line, and the protocol conversion device 3 is communicated with an engineer station and a control station through the network receiving connecting line;
the relay and the protocol conversion equipment 3 form a loop;
the protocol conversion device 3 includes a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through controlling the switch of the protocol conversion module power supply.
Example 4: the relay comprises a relay control end 11 and a relay controlled end 12, the relay controlled end 12 and the protocol conversion equipment 3 form a loop, and the relay control end 11 is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
Example 5: the protocol conversion equipment 3 is also arranged on a network sending connecting line, and the protocol conversion equipment 3 is communicated with the engineer station and the control station through the network sending connecting line.
Example 6: the device also comprises a protocol conversion device 3, wherein the protocol conversion device 3 is arranged on a network receiving connecting line, and the protocol conversion device 3 is connected with the communication switch 2 in series;
the protocol conversion equipment 3 is communicated with an engineer station and a control station through a network receiving connecting line;
the relay and the protocol conversion equipment 3 form a loop;
the protocol conversion device 3 includes a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end 11 and a relay controlled end 12, the relay controlled end 12 and the protocol conversion equipment 3 form a loop, and the relay control end 11 is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
Example 7: the protocol conversion equipment 3 is arranged on a network sending connecting line, and the protocol conversion equipment 3 is communicated with an engineer station and a control station through the network sending connecting line;
the relay and the protocol conversion equipment 3 form a loop;
the protocol conversion device 3 includes a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end 11 and a relay controlled end 12, the relay controlled end 12 and the protocol conversion equipment 3 form a loop, and the relay control end 11 is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
Example 8: the device also comprises a protocol conversion device 3, wherein the protocol conversion device 3 is arranged on a network receiving connecting line, and the protocol conversion device 3 is connected with the communication switch 2 in series;
the protocol conversion equipment 3 is communicated with an engineer station and a control station through a network receiving connecting line;
the relay and the protocol conversion equipment 3 form a loop;
the protocol conversion device 3 includes a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end 11 and a relay controlled end 12, the relay controlled end 12 and the protocol conversion equipment 3 form a loop, and the relay control end 11 is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
Example 9: the protocol conversion equipment 3 is arranged on a network sending connecting line, the protocol conversion equipment 3 is connected with the communication switch 2 in series, and the protocol conversion equipment 3 is communicated with an engineer station and a control station through the network sending connecting line;
the relay and the protocol conversion equipment 3 form a loop;
the protocol conversion device 3 includes a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end 11 and a relay controlled end 12, the relay controlled end 12 and the protocol conversion equipment 3 form a loop, and the relay control end 11 is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
Example 10: the system also comprises an exchanger, wherein the exchanger is connected between the engineer station and the connecting line;
the plurality of connecting lines are in data communication with the switch respectively, and are physically separated;
the nuclear power station DCS main controller is arranged in the control station;
the switch and the engineer station are arranged in the computer room and are connected with the control station arranged in the cabinet through a connecting wire.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (11)
1. A communication control device for controlling system information security is characterized by comprising a connecting line arranged between an engineer station and a control station, wherein the connecting line comprises a network transmitting connecting line and a network receiving connecting line;
the network sending connecting line is used for transmitting data sent by the control station to the engineer station;
the network receiving connection line is used for transmitting data of the engineer station receiving control station.
2. The communication control device for controlling system information security according to claim 1, further comprising a communication switch (2) disposed on the network receiving connection line, wherein the communication switch (2) is used for manually controlling the connection and disconnection of the network receiving connection line.
3. The communication control device for controlling system information security according to claim 2, further comprising a communication switch (2) disposed on the network transmission connection line, wherein the communication switch (2) is used for manually controlling the on/off of the network transmission connection line.
4. The communication control device for controlling system information security according to claim 1, further comprising a protocol conversion device (3), wherein the protocol conversion device (3) is disposed on the network receiving connection line, and the protocol conversion device (3) connects the engineer station and the control station through the network receiving connection line;
the relay and the protocol conversion equipment (3) form a loop;
the protocol conversion equipment (3) comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through controlling the switch of the protocol conversion module power supply.
5. The communication control device for controlling system information safety according to claim 4, characterized in that the relay comprises a relay control terminal (11) and a relay controlled terminal (12), the relay controlled terminal (12) and the protocol conversion equipment (3) form a loop, and the relay control terminal (11) is controlled by an automatic control signal sent by a nuclear power plant DCS main controller.
6. The communication control apparatus for controlling system information security according to claim 5, wherein the protocol conversion device (3) is further disposed on a network transmission connection line, and the protocol conversion device (3) connects the engineer station and the control station through the network transmission connection line.
7. A communication control apparatus for controlling system information security according to claim 2, characterized in that:
the network communication device further comprises protocol conversion equipment (3), wherein the protocol conversion equipment (3) is arranged on the network receiving connecting line, and the protocol conversion equipment (3) is connected with the communication switch (2) in series;
the protocol conversion equipment (3) is communicated with the engineer station and the control station through a network receiving connecting line;
the relay and the protocol conversion equipment (3) form a loop;
the protocol conversion equipment (3) comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end (11) and a relay controlled end (12), the relay controlled end (12) and the protocol conversion equipment (3) form a loop, and the relay control end (11) is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
8. A communication control apparatus for controlling system information security according to claim 7, characterized in that:
the system also comprises the protocol conversion equipment (3) arranged on the network sending connecting line, wherein the protocol conversion equipment (3) is communicated with the engineer station and the control station through the network sending connecting line;
the relay and the protocol conversion equipment (3) form a loop;
the protocol conversion equipment (3) comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end (11) and a relay controlled end (12), the relay controlled end (12) and the protocol conversion equipment (3) form a loop, and the relay control end (11) is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
9. A communication control apparatus for controlling system information security according to claim 3, characterized in that:
the network communication device further comprises protocol conversion equipment (3), wherein the protocol conversion equipment (3) is arranged on the network receiving connecting line, and the protocol conversion equipment (3) is connected with the communication switch (2) in series;
the protocol conversion equipment (3) is communicated with the engineer station and the control station through a network receiving connecting line;
the relay and the protocol conversion equipment (3) form a loop;
the protocol conversion equipment (3) comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end (11) and a relay controlled end (12), the relay controlled end (12) and the protocol conversion equipment (3) form a loop, and the relay control end (11) is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
10. A communication control apparatus for controlling system information security according to claim 9, characterized in that:
the system also comprises the protocol conversion equipment (3) arranged on the network sending connecting line, the protocol conversion equipment (3) is connected with the communication switch (2) in series, and the protocol conversion equipment (3) is communicated with the engineer station and the control station through the network sending connecting line;
the relay and the protocol conversion equipment (3) form a loop;
the protocol conversion equipment (3) comprises a protocol conversion module power supply;
the relay controls the switch of the protocol conversion module power supply;
the relay indirectly controls the network to receive the gating of the multi-channel communication in the connecting line through a switch of the control protocol conversion module power supply;
the relay comprises a relay control end (11) and a relay controlled end (12), the relay controlled end (12) and the protocol conversion equipment (3) form a loop, and the relay control end (11) is controlled by an automatic control signal sent by a nuclear power station DCS main controller.
11. A communication control apparatus for controlling system information security according to any one of claims 1 to 10, characterized in that:
the system also comprises an exchanger, wherein the exchanger is connected between the engineer station and the connecting line;
the plurality of connecting lines are in data communication with the switch respectively, and are physically separated;
the nuclear power station DCS main controller is arranged in the control station;
the switch and the engineer station are arranged in the computer room and are connected with the control station arranged in the cabinet through a connecting wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162384.9A CN112291233A (en) | 2020-10-27 | 2020-10-27 | Communication control device for controlling system information safety |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162384.9A CN112291233A (en) | 2020-10-27 | 2020-10-27 | Communication control device for controlling system information safety |
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| CN112291233A true CN112291233A (en) | 2021-01-29 |
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| CN202011162384.9A Pending CN112291233A (en) | 2020-10-27 | 2020-10-27 | Communication control device for controlling system information safety |
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|---|---|---|---|---|
| DE19710016C1 (en) * | 1997-03-12 | 1998-04-16 | Loh Kg Rittal Werk | Switching cabinet monitoring system |
| CN1780215A (en) * | 2004-11-22 | 2006-05-31 | 北京中科诚毅科技发展有限公司 | Physical-separated switching apparatus |
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