CN102193799A - Safety intermediate system for safety computer communication - Google Patents
Safety intermediate system for safety computer communication Download PDFInfo
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- CN102193799A CN102193799A CN2011100731573A CN201110073157A CN102193799A CN 102193799 A CN102193799 A CN 102193799A CN 2011100731573 A CN2011100731573 A CN 2011100731573A CN 201110073157 A CN201110073157 A CN 201110073157A CN 102193799 A CN102193799 A CN 102193799A
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Abstract
The invention discloses a safety intermediate system for safety computer communication. The system is applied to a safety computer subsystem consisting of a plurality of safety computers which are redundant to one another and are connected pairwise through a high-speed bus, and is arranged between an operating system and an application program system of each safety computer. The safety intermediate system comprises a functional application subsystem, a communication safety subsystem, a protocol management subsystem and a communication interface subsystem which are connected in sequence, wherein the functional application subsystem comprises a safety management module, a message management module and a state monitoring module; the communication safety subsystem comprises a message verifying module, a communication monitoring module and a safety transmission module; and the communication interface subsystem comprises a safety bus interface and a high-speed bus interface. Due to the adoption of the safety intermediate system, general character parts relevant to functions such as safety, communication and the like in the safety computer system are extracted independently, so that convenience is brought to development for an application program, and the safety of the safety computer system in the communication process is ensured.
Description
Technical field
The present invention relates to a kind of computing machine intermediate system, be specifically related to a kind of safe intermediate system that is used for fail-safe computer communication, belong to the fail-safe computer field, be applicable to track traffic, the overcritical fields of safety such as nuclear application.
Background technology
Intermediate system is mainly used in Distributed Computer System.Intermediate system is on operating system and network, and under application program, total effect is the environment that operation is provided for the application program that is in its upper strata, helps the application program of user flexibility, exploitation efficiently and integrated complexity.
Intermediate system is the generic service that is positioned between platform (hardware and operating system) and the application, and these services have the routine interface and the agreement of standard.At different operating system and hardware platform, the multiple realization that meets interface and protocol specification can be arranged.
IDC is defined as middle system: intermediate system is a kind of stand-alone service programming system, distributed application program is by this system shared resource between different technology, intermediate system is positioned on the operating system of client-server, supervisory computer resource and network service.Thereby the most outstanding characteristics of intermediate system are its network communicating functions.Can think that also intermediate system is at platform and the generic service between using, these services have the routine interface and the agreement of standard.At different operating system and hardware platform, the multiple realization that meets interface and agreement can be arranged.
The intermediate system technology all has application in a lot of industries, still but rarely has in the fail-safe computer field to relate to.Trusted computer system belongs to the embedded system field, and the safe intermediate system case of some that propose in this field is at encrypting and decrypting mostly, themes such as network safety prevention.And the present invention is from communication, routine processes, service security angle, has proposed a kind of safe intermediate system that is used for fail-safe computer communication.
Summary of the invention
The purpose of this invention is to provide a kind of safe intermediate system that is used for fail-safe computer communication, between operating system and application program system, general character part about safety and functions such as communicating by letter in the trusted computer system is extracted separately, make things convenient for the exploitation of application program, the security of the computer system that ensures safety in communication process.
For achieving the above object, technical scheme of the present invention provides a kind of safe intermediate system that is used for fail-safe computer communication, its be applied to by some redundant each other, by the high-speed bus fail-safe computer subsystem that the fail-safe computer that communicates constitutes that links to each other in twos, be arranged between the operating system and application program system of each fail-safe computer, this safe intermediate system comprises: the function application subsystem of Lian Jieing, communication security subsystem, consultative management subsystem and communications interface subsystem successively.
Wherein, described function application subsystem and the direct interactive communication of described application program system.This function application subsystem comprises safety management module, message administration module, monitoring module.
Described communication security subsystem is responsible for ensureing the reliability of information communication by monitoring communications process and collection monitoring result.This communication security subsystem comprises message checking module, communication monitoring module and safe transmission module.
Described consultative management subsystem is in the information communication process, and the various bus protocols that described safe intermediate system is used manage.
Described communications interface subsystem is positioned at the bottom of safe intermediate system, by carrying out information transmit-receive work between various communication interfaces and the adjacent computers.This communications interface subsystem comprises safety bus interface, high speed bus interface.
According to above-mentioned, described safety management module is connected with described high speed bus interface, communicate mutual with information by the adjacent fail-safe computer in high-speed bus and this fail-safe computer subsystem, whether the message data that detects each fail-safe computer output in the fail-safe computer subsystem is consistent, guarantees that this fail-safe computer subsystem sends the consistance of message.
Described message administration module provides the uniform communication interface for application program system, is responsible for the message that sends and receives information.
Described consultative management subsystem comprises application protocol package module and application protocol parsing module.
Described application protocol package module is connected with the message administration module, and the infomational message that this application protocol package module will be sent by the message administration module is according to the form encapsulation framing message of agreement, and transfers to communications interface subsystem transmit frame message.
Described application protocol parsing module is according to the form of agreement, and to being resolved by the frame message that receives in the communications interface subsystem, and combination reverts to complete infomational message.
Described message checking module is connected with application protocol parsing module, message administration module respectively, this message checking module is carried out verification to the correctness of being resolved the infomational message that obtains by the application protocol parsing module, receives correct infomational message by the message administration module again.
Described communication monitoring module is monitored the communication process that is undertaken by each communication interface in the communications interface subsystem, and the exceptional communication result who monitors is fed back to monitoring module.
Further, whether described communication monitoring module makes a mistake in transmission course by safety bus interface monitoring safety bus, if find mistake then by the safe transmission module corresponding message data is retransferred.
Described monitoring module is connected with communication monitoring module, safety management module respectively, and the error message that exceptional communication result in the corresponding received communication process and fail-safe computer subsystem are measured is for application program system provides query interface.
Described function application subsystem also comprises log management module and time management module.
Described time management module receives external clock, and provides unified clock for described safe intermediate system.
Described log management module is connected with monitoring module, time management module respectively, the monitor message that will obtain from monitoring module, and, generate daily record and management from the current time that the time management module reads.
Described communications interface subsystem also comprises non-safety bus interface and digital I/O interface.
The safe intermediate system that is used for fail-safe computer communication of the present invention has following beneficial effect:
The details of the multiple communication bus of shielding bottom for application program system provides unified interface, has improved Application developer's work efficiency.
Whole trusted computer system is taked measures such as fault avoidance, fault-tolerant and error detection, ensured the consistance of communication data, the correctness of routine processes, thus promoted the security and the reliability of system.
Communication process is monitored and detected, carry out log record and management for the communication process of important communication process and abnormal state.
Description of drawings
Fig. 1 is the structured flowchart of the safe intermediate system that is used for fail-safe computer communication among the present invention.
Fig. 2 is the structural representation of trusted computer system.
Embodiment
Below in conjunction with Fig. 1 and Fig. 2, getting two trusted computer system with three is example, describes the structure of the safe intermediate system that is used for fail-safe computer communication of the present invention in detail and is applied in this three specific embodiment of getting two trusted computer system.
As shown in Figure 2, described trusted computer system comprises somely three gets two computer subsystems by what safety bus communicated, each three is got two computer subsystems and also comprises three redundant each other fail-safe computers that link to each other in twos and communicate by high-speed bus, three get in two computer subsystems at this, application program system is that independent operating is on these three fail-safe computers.Described fail-safe computer can communicate by the outer non-fail-safe computer of non-safety bus and trusted computer system, also can be by digital I/O(I/O) bus and other peripherals communicates.
Safe intermediate system of the present invention is to be applied to respectively in each fail-safe computer, it is arranged between application program system and the operating system, by this safe intermediate system, the secure communication between each fail-safe computer in application program system and the trusted computer system can be realized, and non-fail-safe computer that application program system and trusted computer system are outer and the secure communication between other peripherals can be realized.
As shown in Figure 1, be the structured flowchart that is used for the safe intermediate system of fail-safe computer communication provided by the present invention, it comprises function application subsystem 1, communication security subsystem 2, consultative management subsystem 3 and the communications interface subsystem 4 that connects successively.
Wherein, described function application subsystem 1 is positioned at the top layer of safe intermediate system, its direct and direct interactive communication of described application program system.This function application subsystem 1 comprises safety management module 11, message administration module 12, monitoring module 13, log management module 14 and time management module 15.
Described communication security subsystem 2 is responsible for ensureing the reliability of information communication by monitoring communications process and collection monitoring result.This communication security subsystem 2 comprises message checking module 21, communication monitoring module 22 and safe transmission module 23.
Described consultative management subsystem 3 is in the information communication process, and the various bus protocols that described safe intermediate system is used manage.This consultative management subsystem 3 comprises application protocol package module 31 and application protocol parsing module 32.
Described communications interface subsystem 4 is positioned at the bottom of safe intermediate system, by carrying out information transmit-receive work between various communication interfaces and the adjacent computers.This communications interface subsystem 4 comprises non-safety bus interface 41, safety bus interface 42, high speed bus interface 43 and digital I/O interface 44.
Further, described safety management module 11 is whole three to get the nucleus module of two computer subsystems, plays the effect of " gate " in communication process.This safety management module 11 is connected with described high speed bus interface 43, and get adjacent fail-safe computer in two computer subsystems by high-speed bus and this three and communicate mutual with information, be responsible for guaranteeing that this three gets consistance that two computer subsystems send message.
Because three to get in two computer subsystems three communication buss between the redundant each other fail-safe computer be high-speed bus, and described three fail-safe computers link to each other in twos by high-speed bus.Therefore, independent operating in the application program system on these three fail-safe computers when sending information, the infomational message that is sent must be detected by this safety management module 11, in the time of must having two paths of data consistent in three tunnel output datas of these three fail-safe computers, just can the output information message, guaranteed that three get safety bus in two computer subsystems, non-safety bus, the synchronism and the consistance of digital I/O bus transmitted information.
Described message administration module 12 provides the uniform communication interface for application program system, is responsible for the message that sends and receives information, and is the important interface between safe intermediate system and the application program system.
Described application protocol package module 31 is connected with message administration module 12, the infomational message that this application protocol package module 31 will be sent by message administration module 12 is according to the form encapsulation framing message of agreement, and transfer in the communications interface subsystem 4, by corresponding communication interface transmit frame message.
Described application protocol parsing module 32 is according to the form of agreement, and to being resolved by the frame message that receives in the communications interface subsystem 4, and combination reverts to complete infomational message.
Described message checking module 21 is connected with application protocol parsing module 32, message administration module 12 respectively, 21 pairs of correctness of resolving the infomational message that obtains by application protocol parsing module 32 of this message checking module are carried out verification, identify the mistakes such as data distortion that in transmission course, take place, receive correct infomational message by message administration module 12 again.
In the present embodiment, connect by non-safety bus between described fail-safe computer and the non-fail-safe computer and carry out information communication, at the non-safety bus interface 41 of fail-safe computer by this safe intermediate system when non-fail-safe computer receives message data, be to carry out verification, thereby guarantee the correctness of information in the transmission course by the correctness of the message data in 21 pairs of transmission courses of described message checking module.
Same, connect by digital I/O bus between fail-safe computer and the peripherals in the present embodiment and carry out information communication, at the digital I/O interface 44 of fail-safe computer by this safe intermediate system when peripherals receives message data, also be to carry out verification, thereby guarantee the correctness of information in the transmission course by the correctness of the message data in 21 pairs of transmission courses of described message checking module.
22 pairs of communication processs that undertaken by each communication interface in the communications interface subsystem 4 of described communication monitoring module are monitored, and the exceptional communication result who monitors is fed back to monitoring module 13.
Further, the also special transmission work of monitoring by safety bus carried out of described communication monitoring module 22 and safe transmission module 23.Whether described communication monitoring module 22 makes a mistake in transmission course by safety bus interface 42 monitoring safety bus, if find mistake then retransfer by 23 pairs of corresponding message datas of safe transmission module.
In the present embodiment, connect by safety bus between each fail-safe computer in the described trusted computer system and carry out information communication, at the safety bus interface 42 of fail-safe computer by this safe intermediate system when adjacent fail-safe computer receives message data, be to carry out verification, thereby guarantee the correctness of information in the transmission course by the correctness of the message data in 21 pairs of transmission courses of described message checking module.And, whether make a mistake in transmission course by described communication monitoring module 22 monitoring safety bus, if find that message has similar frame losing in transmission course, transmission is overtime or data distortion etc. when wrong, retransfer by 23 pairs of corresponding message datas of safe transmission module.
Described monitoring module 13 not only is connected with communication monitoring module 22, the monitored results of received communication process exception; Also be connected, receive three and get two computer subsystem detected error information, for application program system provides query interface with described safety management module 11.
In the present embodiment, monitoring module 13 comprises CRC check mistake, message parsing error etc. from the unusual monitored results of communication process that communication monitoring module 22 receives; And not only comprise the mistake of this machine from the error message that safety management module 11 receives, can also find that three get the mistake of other two computing machines in two computer subsystems, concrete error message comprises that data are more inconsistent, communication port fault, computer failure etc.
Described time management module 15 receives external clocks, and provides unified clock for described safe intermediate system.
Described log management module 14 is connected with monitoring module 13, time management module 15 respectively, will be from the monitored results of monitoring module 13 acquisitions, and from current time that time management module 15 reads, the generation daily record manages, inquiry when supplying described safe intermediate system on-line debugging and safeguarding.
The safe intermediate system that is used for fail-safe computer communication of the present invention has following beneficial effect:
The details of the multiple communication bus of shielding bottom for application program system provides unified interface, has improved Application developer's work efficiency.
Whole trusted computer system is taked measures such as fault avoidance, fault-tolerant and error detection, ensured the consistance of communication data, the correctness of routine processes, thus promoted the security and the reliability of system.
Communication process is monitored and detected, carry out log record and management for the communication process of important communication process and abnormal state.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (14)
1. one kind is used for the safe intermediate system that fail-safe computer is communicated by letter, it is characterized in that, be applied to by some redundant each other, by the high-speed bus fail-safe computer subsystem that the fail-safe computer that communicates constitutes that links to each other in twos, be arranged between the operating system and application program system of each fail-safe computer;
This safe intermediate system comprises: the function application subsystem (1) of Lian Jieing, communication security subsystem (2), consultative management subsystem (3) and communications interface subsystem (4) successively; Wherein,
Described function application subsystem (1) and the direct interactive communication of described application program system; This function application subsystem (1) comprises safety management module (11), message administration module (12), monitoring module (13);
(2 are responsible for ensureing the reliability of information communication by monitoring communications process and collection monitoring result to described communication security subsystem; This communication security subsystem (2) comprises message checking module (21), communication monitoring module (22) and safe transmission module (23);
Described consultative management subsystem (3) is in the information communication process, and the various bus protocols that described safe intermediate system is used manage;
Described communications interface subsystem (4) is by carrying out information transmit-receive work between various data-interfaces and the adjacent computers; This communications interface subsystem (4) comprises safety bus interface (42), high speed bus interface (43).
2. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 1, it is characterized in that, described safety management module (11) is connected with described high speed bus interface (43), communicate mutual with information by the adjacent fail-safe computer in high-speed bus and this fail-safe computer subsystem, whether the message data that detects each fail-safe computer output in the fail-safe computer subsystem is consistent, guarantees that this fail-safe computer subsystem sends the consistance of message.
3. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 1 is characterized in that described message administration module (12) provides the uniform communication interface for application program system, is responsible for the message that sends and receives information.
4. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 3 is characterized in that described consultative management subsystem (3) comprises application protocol package module (31) and application protocol parsing module (32).
5. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 4, it is characterized in that, described application protocol package module (31) is connected with message administration module (12), the infomational message that this application protocol package module (31) will be sent by message administration module (12) is according to the form encapsulation framing message of agreement, and transfers to communications interface subsystem (4) transmit frame message.
6. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 4, it is characterized in that, described application protocol parsing module (32) is according to the form of agreement, to being resolved by the frame message that receives in the communications interface subsystem (4), and combination reverts to complete infomational message.
7. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 6, it is characterized in that, described message checking module (21) is connected with application protocol parsing module (32), message administration module (12) respectively, this message checking module (21) is carried out verification to the correctness of being resolved the infomational message that obtains by application protocol parsing module (32), receives correct infomational message by message administration module (12) again.
8. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 2, it is characterized in that, described communication monitoring module (22) is monitored the communication process that is undertaken by each communication interface in the communications interface subsystem (4), and the exceptional communication result who monitors is fed back to monitoring module (13).
9. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 8, it is characterized in that, whether described communication monitoring module (22) makes a mistake in transmission course by safety bus interface (42) monitoring safety bus, if find mistake then by safe transmission module (23) corresponding message data is retransferred.
10. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 8, it is characterized in that, described monitoring module (13) is connected with communication monitoring module (22), safety management module (11) respectively, the error message that exceptional communication result in the corresponding received communication process and fail-safe computer subsystem are measured is for application program system provides query interface.
11. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 10 is characterized in that described function application subsystem (1) also comprises time management module (15) and log management module (14).
12. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 11 is characterized in that described time management module (15) receives external clock, and provides unified clock for described safe intermediate system.
13. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 12, it is characterized in that, described log management module (14) is connected with monitoring module (13), time management module (15) respectively, will be from the monitor message of monitoring module (13) acquisition, and, generate daily record and management from the current time that time management module (15) reads.
14. the safe intermediate system that is used for fail-safe computer communication as claimed in claim 6 is characterized in that described communications interface subsystem (4) also comprises non-safety bus interface (41) and digital I/O interface (44).
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Application publication date: 20110921 |