A fault diagnosis system is disclosed, including: a control unit (102), a first management board (1011), a first pull-up unit (1031), a second pull-up unit (1032), a first pull-up switch (1051), a second pull-up switch (1052), and at least one central processing unit (CPU 1, ..., CPU 8), where the first pull-up unit (1031) is electrically connected to the first pull-up switch (1051), the second pull-up unit (1032) is electrically connected to the second pull-up switch (1052), the control unit (102) is electrically connected to the first management board (1052), and the control unit (102) is electrically connected to the first pull-up switch (1051) and the second pull-up switch (1032) separately, the control unit (102) is configured to receive physical partitioning information sent by the first management board (1011), the first pull-up unit (1031) and the second pull-up unit (1032) are configured to pull up a fault indication signal of a fault diagnosis line to obtain a target signal, the first management board (1011) is configured to detect whether a level of the target signal is lower than a diagnosis threshold, and when the level of the target signal is lower than the diagnosis threshold, determine that a faulty central processing unit (CPU 1, ..., CPU 8) exists in the at least one central processing unit (CPU 1, ..., CPU 8).

Fault diagnosis system and server

The invention discloses an RSSP-I security protocol separation and deployment method and belongs to the technical field of secure communication. The RSSP-I security protocol separation deployment method comprises the following steps of adding different adaptation layers for a protocol stack, wherein the adaptation layer comprises a D interface adaptation layer, an application adaptation layer, a network adaptation layer and a system adaptation layer; and compiling all the RSSP-I function modules of the protocol stack into a static logic library, and deploying the static logic library to an A machine, a B machine and a C machine by using the corresponding adaptation layers. According to the method in the invention, a series of adaptation layers are developed on the periphery of the RSSP-I safety communication protocol core logic layer; and then, according to the structure of the target platform and the type of the function modules, the corresponding adaptation layer is added for the protocol stack, and different function modules are compiled into a static logic library file to be deployed into the platform, so that the RSSP-I communication protocol is developed into a universal safety software protocol library with the cross-platform transportability, and protocol deployment of different architecture platforms is realized.

Rssp-ii security protocol separation and deployment method

The invention relates to an inter-system synchronous security protocol communication method for a train control center system. The inter-system synchronous security protocol communication method comprises the following steps: step 1, initializing a TCP network task; 2, reading offline configuration information, and creating an RSSP2 task; step 3, after being packaged, transmitting synchronous dataneeding to be interacted to an SFM layer queue to be stored between the double systems; step 4, storing the data into a CFM layer queue; step 5, sending the data to a TCP task queue, and sending thedata to another system; step 6, enabling the double systems to respectively receive the synchronous data sent by the opposite sides, and store the data in a TCP data receiving cache region; 7, enabling the CFM layer to obtain the data of the TCP receiving data cache region and store the data into a data receiving queue of the CFM layer; step 8, after the CFM layer passes through unpacking and dataintegrity checking, enabling the CFM layer to store the CFM layer in a data receiving queue of the SFM layer; and step 9, for the data of the SFM layer receiving queue, enabling the SFM layer to verify the data. Compared with the prior art, the method has the advantage that integrity, real-time performance and safety of synchronous data.

Inter-system synchronization security protocol communication method for train control center system

The invention relates to an operation and restoration method of a rail transit signal system based on domestic encryption technology. According to the method, it is judged that a domestic encryption security chip possibly fails through the signal system itself, if a fault occurs, the domestic encryption security chip is isolated, the signal system is enabled to restore to a state where the encryption technology is not adopted, and meanwhile, warning information is given to a maintenance terminal in the shortest time; and compared with the prior art, the method has the advantages that the normal operation of the signal system is still not affected even under the condition that the domestic encryption security chip fails, and the like.

Operation and restoration method of rail transit signal system based on domestic encryption technology

A redundant Ethernet-based secure computer system, wherein the system comprises a first system and a second system, the first system includes a first logic processing unit module and a first communication unit module, and the second system includes a second logic processing unit module and a second communication unit module; the first logic processing unit module and the second logic processing unit module adopt a dual-CPU symmetric redundancy architecture, for achieving an intrasystem dual-CPU data cross comparison function and an intersystem dual-CPU data synchronous comparison function; the first communication unit module and the second communication unit module are used for achieving a data transmission and data analysis function between the first logic processing unit module, the second logic processing unit module and external signal systems.

Redundant ethernet-based secure computer system

The invention provides a security encryption method and system for railway signals. The method comprises steps: multiple security encryption interfaces are set, wherein the multiple security encryption interfaces are corresponding to different encryption algorithms respectively; one security encryption interface is selected from the multiple security encryption interfaces; and the encryption algorithm corresponding to the selected security encryption interface is adopted to encrypt the data. According to the security encryption method and the system for railway signals, different encryption algorithms are thoroughly considered, different encryption algorithms can be selected according to different types of equipment and applications, and the communication security is improved.

Security encryption method and system for railway signals

The invention provides a data processing method and device and computer equipment. The data processing method comprises the steps that data from an internal communication process is received, and logic operation is performed on the data, wherein the logic operation comprises data synchronous comparison operation; the data obtained after the logic operation is returned to the internal communicationprocess; and maintenance data generated in the logic operation process is sent to a maintenance communication process. Through the data processing method and device and the computer equipment, the security of a secure computer system can be improved.

Data processing method and device and computer equipment

The invention discloses an RSSP-I secure communication method based on two-system synchronization, which belongs to the technical field of secure communication. The method comprises steps: main and standby engine protocol interaction types in an RSD packet header adopt 0*01, and main and standby engine packet types adopt 0*82; a redundancy technology is adopted to change data transmitted by the main and standby engines to multiple copies of identical data; and the multiple copies of identical data are transmitted to a receiving end through the main and standby engines. Main and standby systemsare not distinguished, the standby system uses data of the main system for transmission, data of the two systems can be kept identically, the utilization rate of a channel bandwidth of the standby system is improved, and the data transmission reliability and the data transmission security are improved.

RSSP-I secure communication method based on two-system synchronization

The invention provides a safe computer system based on the redundant ethernet. The safe computer system comprises a first system and a second system, the first system comprises a first logic processing unit module and a first communication unit module, and the second system comprises a second logic unit processing module and a second communication unit module; a double-CPU symmetric redundant structure is adopted by the first logic processing unit module and the second logic processing unit module and is used for achieving the functions of in-system double-CPU data cross comparison and inter-system double-CPU data synchronous comparison; the first communication unit module and the second communication unit module are used for achieving the functions of data transmission and data analysis of the first logic processing unit module and the second logic processing unit module and an external signal system. The safe computer system is simple in hardware structure, high in calculating capacity and large in communication capacity and can appropriately control the communication capacity, solves the problems of safe calculation and safe control of a safe computer and is applicable to a railtraffic safe computer platform and a safe computer platform in other industries.

Safe computer system based on redundant ethernet

The invention discloses an RSSP-II security protocol separate deployment method and belongs to the technical field of security communication. The method comprises the steps of adding different adaptation layers to a protocol stack; and compiling all RSSP-II function modules of the protocol stack into library files through utilization of corresponding adaptation layers and deploying the library files to A, B and C machines. According to the method, a series of adaptation layers are developed around a core logic layer of the RSSP-II security communication protocol, the corresponding adaption layers are added to the protocol stack according to architecture of target platforms and the types of the function modules, the different function modules are compiled into the library files, and the library files are deployed to the platforms. The RSSP-II communication protocol can be developed as a cross-platform transportable universal security software protocol library, so the protocol deploymentof different architecture platforms can be realized.

Wang Yimin

Papers

Security encryption method and system for railway signals

Data processing method and device and computer equipment

RSSP-I secure communication method based on two-system synchronization

Safe computer system based on redundant ethernet

Rssp-i security protocol separate deployment method