CN113721593B - Comprehensive avionics system with optimized backup function - Google Patents
Comprehensive avionics system with optimized backup function Download PDFInfo
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- CN113721593B CN113721593B CN202111036919.2A CN202111036919A CN113721593B CN 113721593 B CN113721593 B CN 113721593B CN 202111036919 A CN202111036919 A CN 202111036919A CN 113721593 B CN113721593 B CN 113721593B
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- 239000013307 optical fiber Substances 0.000 claims abstract description 225
- 230000000737 periodic effect Effects 0.000 claims description 65
- 230000005540 biological transmission Effects 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 11
- 230000004913 activation Effects 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims 4
- 238000011084 recovery Methods 0.000 abstract description 6
- 238000004891 communication Methods 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 description 7
- 238000012545 processing Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
- G06F11/1469—Backup restoration techniques
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/032—Arrangements for fault recovery using working and protection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/03—Arrangements for fault recovery
- H04B10/038—Arrangements for fault recovery using bypasses
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Abstract
The invention belongs to the technical field of computers, and particularly relates to a comprehensive avionics system with an optimized backup function. The system utilizes a dual-redundancy hot backup mode under a comprehensive modularized avionics system architecture taking optical fibers as a communication network, three backup modes of a main control module backup, a universal module backup, an optical fiber switch backup and the like are provided, the problem of fault recovery of a system module and the optical fiber switch is solved, the system can quickly and reliably recover the functions of the system module, the influence on the functions of the system is reduced, and the backup recovery efficiency of the comprehensive avionics system is improved.
Description
Technical Field
The invention belongs to the technical field of computers, and particularly relates to a comprehensive avionics system with an optimized backup function.
Background
Avionics systems have undergone a lengthy development process ranging from discrete to joint, from comprehensive to highly comprehensive in order to meet the complex military and civilian needs. Integrated modular avionics systems (Integrated Modular Avionics, IMA) are the most comprehensive stage of avionics system architecture and have been used on F-22, F-35 military aircraft in the united states and on civilian aircraft such as air passenger a380 and boeing 787. The IMA adopts modularized and generalized design ideas, and takes a plurality of airborne devices with independent functions as a whole into consideration, so that the formed system is highly coupled in software and hardware, the reusability and the reconfigurable capability of the system are improved, and meanwhile, the power consumption, the quality and the volume of the system are obviously reduced.
Along with the continuous development of IMA, more and more application functions are integrated into an IMA architecture system, so that urgent demands are put forward on the reliability of the system, and when a system module fails, how to realize the rapid and reliable recovery of the system function, realize the effective scheduling and redundancy support of various resources, and solve the hot spot problem urgently.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to solve the technical problems that: in order to overcome the above problems, an integrated avionics system is provided that optimizes the backup function.
(II) technical scheme
In order to solve the technical problems, the present invention provides a comprehensive avionics system for optimizing backup function, where the modules in the comprehensive avionics system include: the system comprises a main control module, a general module and an optical fiber switch module, and a standby module is configured for each module; each main control module, the universal module and the standby module are respectively connected to two optical fiber switch modules, namely an optical fiber switch module 1 and an optical fiber switch module 2; thus, the standby module of the main control module is defined as a standby main control module; defining a standby module of the universal module as a standby universal module; in the optical fiber switch module 1 and the optical fiber switch module 2, one optical fiber switch module is a standby module of the other optical fiber switch module, and the standby module of the optical fiber switch module is defined as a standby optical fiber switch module;
The main control module is used for monitoring the state of each module, managing and controlling the backup of each module and configuring the resources of each module, and the universal module is used for providing universal and special computing services according to task demands;
in the normal working state of the comprehensive avionics system, the main control module monitors the states of the universal modules 1 to N and the optical fiber switch modules 1 and 2 in real time; the standby main control module is used for monitoring states of the main control module, the universal modules 1 to N and the optical fiber switch modules 1 and 2 in real time;
in the working process, the main control module sends messages to the universal module and the standby universal module at the same time, when receiving the messages, the standby universal module in a backup state only receives the messages from the main control module and other universal modules; the standby main control module only receives the message of the universal module, and the universal module sends the message to other universal modules and the main control module;
several roles are defined in the integrated avionics system: MC represents the master role of the system, MCB represents the master standby role of the system, DPT represents the master role of the universal module of the system, DPT_B represents the standby role of the universal module of the system, FCS represents the master role of the optical fiber switch of the system, and FCS_B represents the standby role of the optical fiber switch of the system; therefore, in each module in the comprehensive avionics system, the role of the master control module is MC, the role of the standby master control module is MCB, the roles of the general modules 1 to the general modules N are DPT, the roles of the standby general modules 1 to the standby general modules N are DPT_B, the roles of the optical fiber switch modules are FCS, and the roles of the standby optical fiber switch modules are FCS_B;
Aiming at the comprehensive avionics system architecture, the method provides three backup modes:
A. a master control module backup mode;
B. a universal module backup mode;
C. a fiber switch back-up mode;
the working flow of the backup mode of the main control module is as follows:
step A1: after the system is started normally, the main control module sends a periodic self-checking message to the standby main control module;
step A2: the standby main control module receives the periodic self-checking information of the main control module, if the periodic self-checking information is successfully acquired, the standby main control module continues to receive the periodic self-checking information, if not, whether the periodic self-checking information is not received for more than X times is judged, if not, the periodic self-checking information is continuously received, otherwise, the step A3 is carried out;
step A3: the standby main control module sets the state of the main control module to be an offline state, and starts a backup strategy;
step A4: the standby main control module sets the role of the standby main control module as MC, and opens a data transmission channel; at this time, the role is set as a standby master control module of the MC, and redefined as a master control module;
step A5: the main control module at the moment, namely the current main control module sends messages to other general modules, and the message content is the physical address and role of the current main control module;
step A6: and the universal module sets the receiving and transmitting channels as the current main control module according to the received physical address and role information of the current main control module.
In the working flow of the backup mode of the main control module, when the main control module in an offline state is on line again through restarting or other modes, whether the main control module with the MC role exists in the current system is detected, if so, the main control module is set as the MCB, namely the main control module is changed and set as the backup main control module, and then the states of the main control module, the general module 1 to the general module N, the optical fiber switch module 1 and the optical fiber switch module 2 are monitored in real time.
The general module backup mode workflow is as follows:
step B1: after the system is started normally, the universal module sends a periodic self-checking message to the main control module;
step B2: the main control module receives the periodic self-checking information of the general module m, if the periodic self-checking information is successfully obtained, the periodic self-checking information is continuously received, if not, whether the periodic self-checking information is not received for more than X times is judged, if not, the periodic self-checking information is continuously received, otherwise, the step B3 is carried out;
step B3: the main control module sets the m state of the universal module to be an offline state, and starts a backup strategy;
step B4: the main control module sends a message to the standby universal module m to inform the standby universal module m to start backup activation;
step B5: the standby universal module m receives the starting activation message, sets the role of the standby universal module m to be DPT, opens a sending channel and informs the main control module that the starting is completed; at this time, the role has been set as a spare universal module m of the DPT, which is redefined as the universal module m;
Step B6: the main control module sends information to other general modules, and the content is the physical address and role of the general module m; when other universal modules need to communicate with the universal module m, only the universal module m with the current role of DPT of the system sends and receives messages;
step B7: the standby universal module m completes the backup switching work and sends a periodic self-checking message to the main control module.
Wherein the value of m is less than or equal to N.
In the workflow of the universal module backup mode, when the universal module m in an offline state is on line again through restarting or other modes, whether the universal module m with the DPT role exists in the current system is detected, if so, the role of the universal module m is set as DPT_B, namely the universal module m is changed to be set as a standby universal module m, and the main control module is informed of an on-line message, a physical address and the role.
The optical fiber switch backup mode work flow is as follows:
when the system is started normally, the two optical fiber exchanger modules work simultaneously and receive forwarding data simultaneously; the data of the optical fiber switch module 1 and the data of the optical fiber switch module 2 are received and processed in the main control module, the standby main control module, the universal modules 1 to N and the standby universal modules 1 to N by default; that is, the role of the fabric switch module 1 defaults to FCS, and the role of the fabric switch module 2 defaults to fcs_b;
When the data of the optical fiber switch module 1 is not received in 5 periods, a query message is sent to the optical fiber switch module 1, if the query returns successfully, the optical fiber switch module 1 is indicated to work normally, then a main control module is notified, the content is that the data of other boards and cards are out of question, and the main control module is used for processing the problems of other modules; if the inquiry fails, which indicates that the optical fiber switch module 1 is not working properly, the data of the optical fiber switch module 2 is automatically received and processed, and the master control module sets the role of the optical fiber switch module 2 as FCS.
The optical fiber switch backup mode workflow comprises the following steps:
step C1: after the system is normally started, the two optical fiber exchanger modules work simultaneously, and the main control module and the universal module send and receive data through the optical fiber exchanger module 1 and the optical fiber exchanger module 2; the main control module and the universal module only process the data sent by the optical fiber exchanger module 1 by default;
step C2: the main control module periodically inquires the data transmission condition of the optical fiber switch module 1, if the data transmission exists, the data transmission condition is continuously and periodically inquired, otherwise, whether Y times of data transmission are exceeded or not is judged, if Y times of data transmission are not exceeded, the data transmission condition is continuously and periodically inquired, otherwise, the step C3 is carried out;
Step C3: the main control module sends inquiry information to the optical fiber switch module 1, if the inquiry success information is received, the optical fiber switch module 1 is judged to be normal, the problems of other general modules are checked, otherwise, the optical fiber switch module 1 is judged to have problems, the main control module sets the state of the optical fiber switch module 1 to be in an off-line state, and an optical fiber switch backup strategy is started;
step C4: the main control module sends information to the standby main control module, the universal module and the standby universal module, informs the standby main control module, the standby universal module and the standby universal module to switch to a channel of the optical fiber switch module 2, and receives and sends the information through the optical fiber switch module 2;
step C5: the master control module sets the role of the optical fiber switch module 2 as FCS, and the optical fiber switch module 2 completes backup switching work.
When the optical fiber switch module 1 in the offline state is re-on-line by restarting or other modes, the main control module detects whether an optical fiber switch module with an FCS role exists in the current system when receiving an on-line message of the optical fiber switch module 1, and if so, the role of the optical fiber switch module 1 is set as fcs_b.
Wherein, the system is a comprehensive avionics system.
Wherein X times are three times and Y times are five times.
(III) beneficial effects
Compared with the prior art, the comprehensive avionics system utilizes a dual-redundancy hot backup mode under the comprehensive modularized avionics system architecture taking optical fibers as a communication network, three backup modes of main control module backup, universal module backup and optical fiber switch backup are provided, the problem of fault recovery of system modules and optical fiber switches is solved, the system can quickly and reliably recover the functions of the system modules, the influence on the system functions is reduced, and the backup recovery efficiency of the comprehensive avionics system is improved.
Drawings
FIG. 1 is a schematic diagram of an integrated avionics system in accordance with the present invention.
Fig. 2 is a backup flowchart of the main control module of the present invention.
FIG. 3 is a general module backup flowchart of the present invention.
Fig. 4 is a schematic diagram of a fabric switch backup flow chart of the present invention.
Detailed Description
For the purposes of clarity, content, and advantages of the present invention, a detailed description of the embodiments of the present invention will be described in detail below with reference to the drawings and examples.
In order to solve the above technical problems, the present invention provides a comprehensive avionics system for optimizing a backup function, as shown in fig. 1, where modules in the comprehensive avionics system include: the system comprises a main control module, a general module and an optical fiber switch module, and a standby module is configured for each module; each main control module, the universal module and the standby module are respectively connected to two optical fiber switch modules, namely an optical fiber switch module 1 and an optical fiber switch module 2; thus, the standby module of the main control module is defined as a standby main control module; defining a standby module of the universal module as a standby universal module; in the optical fiber switch module 1 and the optical fiber switch module 2, one optical fiber switch module is a standby module of the other optical fiber switch module, and the standby module of the optical fiber switch module is defined as a standby optical fiber switch module;
The main control module is used for monitoring the state of each module, managing and controlling the backup of each module and configuring the resources of each module, and the universal module is used for providing universal and special computing services according to task demands;
in the normal working state of the comprehensive avionics system, the main control module monitors the states of the universal modules 1 to N and the optical fiber switch modules 1 and 2 in real time; the standby main control module is used for monitoring states of the main control module, the universal modules 1 to N and the optical fiber switch modules 1 and 2 in real time;
in the working process, the main control module sends messages to the universal module and the standby universal module at the same time, when receiving the messages, the standby universal module in a backup state only receives the messages from the main control module and other universal modules; the standby main control module only receives the message of the universal module, and the universal module sends the message to other universal modules and the main control module;
several roles are defined in the integrated avionics system: MC represents the master role of the system, MCB represents the master standby role of the system, DPT represents the master role of the universal module of the system, DPT_B represents the standby role of the universal module of the system, FCS represents the master role of the optical fiber switch of the system, and FCS_B represents the standby role of the optical fiber switch of the system; therefore, in each module in the comprehensive avionics system, the role of the master control module is MC, the role of the standby master control module is MCB, the roles of the general modules 1 to the general modules N are DPT, the roles of the standby general modules 1 to the standby general modules N are DPT_B, the roles of the optical fiber switch modules are FCS, and the roles of the standby optical fiber switch modules are FCS_B;
Aiming at the comprehensive avionics system architecture, the method provides three backup modes:
A. a master control module backup mode;
B. a universal module backup mode;
C. a fiber switch back-up mode;
the working flow of the backup mode of the main control module is as follows:
step A1: after the system is started normally, the main control module sends a periodic self-checking message to the standby main control module;
step A2: the standby main control module receives the periodic self-checking information of the main control module, if the periodic self-checking information is successfully acquired, the standby main control module continues to receive the periodic self-checking information, if not, whether the periodic self-checking information is not received for more than X times is judged, if not, the periodic self-checking information is continuously received, otherwise, the step A3 is carried out;
step A3: the standby main control module sets the state of the main control module to be an offline state, and starts a backup strategy;
step A4: the standby main control module sets the role of the standby main control module as MC, and opens a data transmission channel; at this time, the role is set as a standby master control module of the MC, and redefined as a master control module;
step A5: the main control module at the moment, namely the current main control module sends messages to other general modules, and the message content is the physical address and role of the current main control module;
step A6: and the universal module sets the receiving and transmitting channels as the current main control module according to the received physical address and role information of the current main control module.
In the working flow of the backup mode of the main control module, when the main control module in an offline state is on line again through restarting or other modes, whether the main control module with the MC role exists in the current system is detected, if so, the main control module is set as the MCB, namely the main control module is changed and set as the backup main control module, and then the states of the main control module, the general module 1 to the general module N, the optical fiber switch module 1 and the optical fiber switch module 2 are monitored in real time.
The general module backup mode workflow is as follows:
step B1: after the system is started normally, the universal module sends a periodic self-checking message to the main control module;
step B2: the main control module receives the periodic self-checking information of the general module m, if the periodic self-checking information is successfully obtained, the periodic self-checking information is continuously received, if not, whether the periodic self-checking information is not received for more than X times is judged, if not, the periodic self-checking information is continuously received, otherwise, the step B3 is carried out;
step B3: the main control module sets the m state of the universal module to be an offline state, and starts a backup strategy;
step B4: the main control module sends a message to the standby universal module m to inform the standby universal module m to start backup activation;
step B5: the standby universal module m receives the starting activation message, sets the role of the standby universal module m to be DPT, opens a sending channel and informs the main control module that the starting is completed; at this time, the role has been set as a spare universal module m of the DPT, which is redefined as the universal module m;
Step B6: the main control module sends information to other general modules, and the content is the physical address and role of the general module m; when other universal modules need to communicate with the universal module m, only the universal module m with the current role of DPT of the system sends and receives messages;
step B7: the standby universal module m completes the backup switching work and sends a periodic self-checking message to the main control module.
Wherein the value of m is less than or equal to N.
In the workflow of the universal module backup mode, when the universal module m in an offline state is on line again through restarting or other modes, whether the universal module m with the DPT role exists in the current system is detected, if so, the role of the universal module m is set as DPT_B, namely the universal module m is changed to be set as a standby universal module m, and the main control module is informed of an on-line message, a physical address and the role.
The optical fiber switch backup mode work flow is as follows:
when the system is started normally, the two optical fiber exchanger modules work simultaneously and receive forwarding data simultaneously; the data of the optical fiber switch module 1 and the data of the optical fiber switch module 2 are received and processed in the main control module, the standby main control module, the universal modules 1 to N and the standby universal modules 1 to N by default; that is, the role of the fabric switch module 1 defaults to FCS, and the role of the fabric switch module 2 defaults to fcs_b;
When the data of the optical fiber switch module 1 is not received in 5 periods, a query message is sent to the optical fiber switch module 1, if the query returns successfully, the optical fiber switch module 1 is indicated to work normally, then a main control module is notified, the content is that the data of other boards and cards are out of question, and the main control module is used for processing the problems of other modules; if the inquiry fails, which indicates that the optical fiber switch module 1 is not working properly, the data of the optical fiber switch module 2 is automatically received and processed, and the master control module sets the role of the optical fiber switch module 2 as FCS.
The optical fiber switch backup mode workflow comprises the following steps:
step C1: after the system is normally started, the two optical fiber exchanger modules work simultaneously, and the main control module and the universal module send and receive data through the optical fiber exchanger module 1 and the optical fiber exchanger module 2; the main control module and the universal module only process the data sent by the optical fiber exchanger module 1 by default;
step C2: the main control module periodically inquires the data transmission condition of the optical fiber switch module 1, if the data transmission exists, the data transmission condition is continuously and periodically inquired, otherwise, whether Y times of data transmission are exceeded or not is judged, if Y times of data transmission are not exceeded, the data transmission condition is continuously and periodically inquired, otherwise, the step C3 is carried out;
Step C3: the main control module sends inquiry information to the optical fiber switch module 1, if the inquiry success information is received, the optical fiber switch module 1 is judged to be normal, the problems of other general modules are checked, otherwise, the optical fiber switch module 1 is judged to have problems, the main control module sets the state of the optical fiber switch module 1 to be in an off-line state, and an optical fiber switch backup strategy is started;
step C4: the main control module sends information to the standby main control module, the universal module and the standby universal module, informs the standby main control module, the standby universal module and the standby universal module to switch to a channel of the optical fiber switch module 2, and receives and sends the information through the optical fiber switch module 2;
step C5: the master control module sets the role of the optical fiber switch module 2 as FCS, and the optical fiber switch module 2 completes backup switching work.
When the optical fiber switch module 1 in the offline state is re-on-line by restarting or other modes, the main control module detects whether an optical fiber switch module with an FCS role exists in the current system when receiving an on-line message of the optical fiber switch module 1, and if so, the role of the optical fiber switch module 1 is set as fcs_b.
Wherein, the system is a comprehensive avionics system.
Wherein X times are three times and Y times are five times.
In addition, the invention also provides a comprehensive avionics system backup method based on the optical fiber network, the architecture of the comprehensive avionics system is shown in the figure 1, wherein the comprehensive avionics system adopts an open architecture, the data transmission adopts the optical fiber network, each module deployed in the system independently provides computing resources and data input and output services, and application software with different functions is deployed; the module in the integrated avionics system comprises: the system comprises a main control module, a general module and an optical fiber switch module, and a standby module is configured for each module; each main control module, the universal module and the standby module are respectively connected to two optical fiber switch modules, namely an optical fiber switch module 1 and an optical fiber switch module 2; thus, the standby module of the main control module is defined as a standby main control module (i.e. a main control module (standby)); defining the spare module of the universal module as a spare universal module (i.e. universal module (spare)); in the optical fiber switch module 1 and the optical fiber switch module 2, one optical fiber switch module is a standby module of the other optical fiber switch module, and the standby module of the optical fiber switch module is defined as a standby optical fiber switch module;
The main control module is used for monitoring the state of each module, managing and controlling the backup of each module and configuring the resources of each module, and the universal module is used for providing universal and special computing services according to task demands;
in the normal working state of the comprehensive avionics system, the main control module monitors the states of the universal modules 1 to N and the optical fiber switch modules 1 and 2 in real time; the standby main control module is used for monitoring states of the main control module, the universal modules 1 to N and the optical fiber switch modules 1 and 2 in real time;
in the working process, the main control module sends messages to the universal module and the standby universal module at the same time, when receiving the messages, the standby universal module in a backup state only receives the messages from the main control module and other universal modules; the standby main control module only receives the message of the universal module, and the universal module sends the message to other universal modules and the main control module;
several roles are defined in the integrated avionics system: MC represents the master role of the system, MCB represents the master standby role of the system, DPT represents the master role of the universal module of the system, DPT_B represents the standby role of the universal module of the system, FCS represents the master role of the optical fiber switch of the system, and FCS_B represents the standby role of the optical fiber switch of the system; in fig. 1, therefore, in each module in the above integrated avionics system, the master control module has the role of MC, the standby master control module has the role of MCB, the general modules 1 to N have the role of DPT, the standby general modules 1 to N have the role of dpt_b, the optical fiber switch module has the role of FCS, and the standby optical fiber switch module has the role of fcs_b;
Aiming at the comprehensive avionics system architecture, the method provides three backup modes:
A. a master control module backup mode;
B. a universal module backup mode;
C. a fiber switch back-up mode;
the working flow of the backup mode of the main control module is as follows:
step A1: after the system is started normally, the main control module sends a periodic self-checking message to the standby main control module;
step A2: the standby main control module receives the periodic self-checking information of the main control module, if the periodic self-checking information is successfully acquired, the standby main control module continues to receive the periodic self-checking information, if not, whether the periodic self-checking information is not received for more than X times is judged, if not, the periodic self-checking information is continuously received, otherwise, the step A3 is carried out;
step A3: the standby main control module sets the state of the main control module to be an offline state, and starts a backup strategy;
step A4: the standby main control module sets the role of the standby main control module as MC, and opens a data transmission channel; at this time, the role is set as a standby master control module of the MC, and redefined as a master control module;
step A5: the main control module at the moment, namely the current main control module sends messages to other general modules, and the message content is the physical address and role of the current main control module;
step A6: and the universal module sets the receiving and transmitting channels as the current main control module according to the received physical address and role information of the current main control module.
In the working flow of the backup mode of the main control module, when the main control module in an offline state is on line again through restarting or other modes, whether the main control module with the MC role exists in the current system is detected, if so, the main control module is set as the MCB, namely the main control module is changed and set as the backup main control module, and then the states of the main control module, the general module 1 to the general module N, the optical fiber switch module 1 and the optical fiber switch module 2 are monitored in real time.
The general module backup mode workflow is as follows:
step B1: after the system is started normally, the universal module sends a periodic self-checking message to the main control module;
step B2: the main control module receives the periodic self-checking information of the general module m, if the periodic self-checking information is successfully obtained, the periodic self-checking information is continuously received, if not, whether the periodic self-checking information is not received for more than X times is judged, if not, the periodic self-checking information is continuously received, otherwise, the step B3 is carried out;
step B3: the main control module sets the m state of the universal module to be an offline state, and starts a backup strategy;
step B4: the main control module sends a message to the standby universal module m to inform the standby universal module m to start backup activation;
step B5: the standby universal module m receives the starting activation message, sets the role of the standby universal module m to be DPT, opens a sending channel and informs the main control module that the starting is completed; at this time, the role has been set as a spare universal module m of the DPT, which is redefined as the universal module m;
Step B6: the main control module sends information to other general modules, and the content is the physical address and role of the general module m; when other universal modules need to communicate with the universal module m, only the universal module m with the current role of DPT of the system sends and receives messages;
step B7: the standby universal module m completes the backup switching work and sends a periodic self-checking message to the main control module.
Wherein the value of m is less than or equal to N.
In the workflow of the universal module backup mode, when the universal module m in an offline state is on line again through restarting or other modes, whether the universal module m with the DPT role exists in the current system is detected, if so, the role of the universal module m is set as DPT_B, namely the universal module m is changed to be set as a standby universal module m, and the main control module is informed of an on-line message, a physical address and the role.
The optical fiber switch backup mode work flow is as follows:
when the system is started normally, the two optical fiber exchanger modules work simultaneously and receive forwarding data simultaneously; the data of the optical fiber switch module 1 and the data of the optical fiber switch module 2 are received and processed in the main control module, the standby main control module, the universal modules 1 to N and the standby universal modules 1 to N by default; that is, the role of the fabric switch module 1 defaults to FCS, and the role of the fabric switch module 2 defaults to fcs_b;
When the data of the optical fiber switch module 1 is not received in 5 periods, a query message is sent to the optical fiber switch module 1, if the query returns successfully, the optical fiber switch module 1 is indicated to work normally, then a main control module is notified, the content is that the data of other boards and cards are out of question, and the main control module is used for processing the problems of other modules; if the inquiry fails, which indicates that the optical fiber switch module 1 is not working properly, the data of the optical fiber switch module 2 is automatically received and processed, and the master control module sets the role of the optical fiber switch module 2 as FCS.
The optical fiber switch backup mode workflow comprises the following steps:
step C1: after the system is normally started, the two optical fiber exchanger modules work simultaneously, and the main control module and the universal module send and receive data through the optical fiber exchanger module 1 and the optical fiber exchanger module 2; the main control module and the universal module only process the data sent by the optical fiber exchanger module 1 by default;
step C2: the main control module periodically inquires the data transmission condition of the optical fiber switch module 1, if the data transmission exists, the data transmission condition is continuously and periodically inquired, otherwise, whether Y times of data transmission are exceeded or not is judged, if Y times of data transmission are not exceeded, the data transmission condition is continuously and periodically inquired, otherwise, the step C3 is carried out;
Step C3: the main control module sends inquiry information to the optical fiber switch module 1, if the inquiry success information is received, the optical fiber switch module 1 is judged to be normal, the problems of other general modules are checked, otherwise, the optical fiber switch module 1 is judged to have problems, the main control module sets the state of the optical fiber switch module 1 to be in an off-line state, and an optical fiber switch backup strategy is started;
step C4: the main control module sends information to the standby main control module, the universal module and the standby universal module, informs the standby main control module, the standby universal module and the standby universal module to switch to a channel of the optical fiber switch module 2, and receives and sends the information through the optical fiber switch module 2;
step C5: the master control module sets the role of the optical fiber switch module 2 as FCS, and the optical fiber switch module 2 completes backup switching work.
When the optical fiber switch module 1 in the offline state is re-on-line by restarting or other modes, the main control module detects whether an optical fiber switch module with an FCS role exists in the current system when receiving an on-line message of the optical fiber switch module 1, and if so, the role of the optical fiber switch module 1 is set as fcs_b.
Wherein, the system is a comprehensive avionics system.
Wherein X times are three times and Y times are five times.
Example 1
The integrated avionics system architecture described in this embodiment is shown in fig. 1, where the integrated avionics system is an open architecture, data transmission is implemented by using an optical fiber network, and each module deployed in the system independently provides computing resources and data input and output services, and deploys application software with different functions. The modules in the system are divided into a main control module and a general module, and each module is provided with a standby module, and each module is respectively connected to two optical fiber switches. The main control module is mainly used for monitoring the state of each module, managing and controlling the backup of each module and configuring the resources of each module, and the general module is mainly used for providing general and special computing services according to task demands.
In the normal working state of the system, the main control module monitors the states of the universal modules 1 to N and the optical fiber switches 1 and 2 in real time. The main control module (standby) monitors the states of the main control module, the universal modules 1 to N and the optical fiber switches 1 and 2 in real time.
In the working process, the main control module can send messages to the universal module and the universal module (standby) at the same time, when receiving the messages, the universal module in the standby state only receives the messages of the universal module, and the universal module in the standby state also only receives the messages from the main control module and other universal modules. The main control module (standby) only receives the message of the universal module, and the universal module sends the message to other universal modules and the main control module.
In the comprehensive avionics system, the following roles are defined, MC represents the master control role of the system, MCB represents the master control backup role of the system, DPT represents the universal module master role of the system, DPT_B represents the universal module backup role of the system, FCS represents the optical fiber switch master role of the system, and FCS_B represents the optical fiber switch backup role of the system. In fig. 1, the master module role is MC, the master module (standby) role is MCB, the general modules 1 to N role is DPT, the general modules (standby) 1 to N role is dpt_b, the optical fiber switch role is FCS, and the optical fiber switch (standby) role is fcs_b.
For the described integrated avionics system architecture, three backup modes are proposed:
1. master control module backup mode
2. Universal module backup mode
3. Optical fiber switch backup mode
The backup mode workflow of the master control module is as follows.
1) After the system is started normally, the main control module sends a periodic self-checking message to the main control module (standby).
2) The main control module (standby) receives the periodic self-checking information of the main control module, if the periodic self-checking information is successfully acquired, the periodic self-checking information is continuously received, if not, whether the periodic self-checking information is not received for more than three times is judged, if not, the periodic self-checking information is continuously received, otherwise, the step 3 is carried out.
3) The main control module (standby) sets the state of the main control module to be an offline state, and starts a backup strategy.
4) The main control module (standby) sets the own role as MC, and opens the data transmission channel.
5) The main control module (spare) sends information to other general modules, and the information content is the physical address and role of the main control module (spare).
6) And the universal module sets the receiving and transmitting channels as the current main control module according to the received physical address and role information of the current main control module.
When the offline main control module is on line again through restarting or other modes, whether the main control module with the MC role exists in the current system is detected, if so, the main control module with the MC role is set as the MCB, and the states of the main control module, the universal module 1 to the universal module N and the optical fiber switches 1 and 2 are monitored in real time.
The general module backup mode workflow is as follows.
1) After the system is started normally, the universal module sends a periodic self-checking message to the main control module.
2) The main control module receives the periodic self-checking information of the general module m, if the information is successfully obtained, the periodic self-checking information is continuously received, otherwise, whether the periodic self-checking information is not received for more than three times is judged, if the periodic self-checking information is not received for more than three times, the periodic self-checking information is continuously received, otherwise, the step 3 is carried out.
3) The main control module sets the m state of the universal module to be an offline state, and starts a backup strategy.
4) The main control module sends a message to the universal module m (standby) to inform the universal module m (standby) to start backup activation.
5) The general module m (standby) receives the starting activation message, sets the own role as DPT, opens the sending channel and informs the main control module that the starting is completed.
6) The main control module sends information to other general modules, and the content is the physical address and role of the general module m. When other universal modules need to communicate with the universal module m, only the current universal module m of the system sends and receives messages.
7) And the universal module m (standby) completes backup switching work and sends a periodic self-checking message to the main control module.
When the general module m in the offline state is on line again through restarting or other modes, whether a main control module of a DPT role exists in the current system is detected, if so, the role of the general module m is set as DPT_B, and the main control module is informed of an on-line message, a physical address and the role.
Optical fiber switch backup mode:
when the system is started normally, the two optical fiber switches work simultaneously and receive the forwarding data simultaneously. The method comprises the steps that data of an optical fiber switch 1 and data of an optical fiber switch 2 are received and processed by default in a main control module, a main control module (standby), a general module 1 to a general module N and a general module 1 to a general module N (standby), when the data of the optical fiber switch 1 is not received in 5 periods, query information is sent to the optical fiber switch, if query returns successfully, the optical fiber switch 1 is indicated to work normally, then the main control module is informed that the content of the data of other boards is problematic, and the main control module is used for processing the problems of other modules; if the inquiry fails, which means that the optical fiber switch 1 is not working properly, the data of the optical fiber switch 2 is automatically received and processed, and the master control module sets the role of the optical fiber switch 2 as FCS.
1) After the system is normally started, the two optical fiber switches work simultaneously, the main control module and the universal module send and receive data through the optical fiber switch 1 and the optical fiber switch 2, and the main control module and the universal module only process the data sent by the optical fiber switch 1 by default.
2) The main control module periodically inquires the data transmission condition of the optical fiber switch 1, if the data transmission exists, the data transmission condition is continuously and periodically inquired, otherwise, whether the data transmission is not performed for more than five times is judged, if the data transmission is not performed for more than five times, the data transmission condition is continuously and periodically inquired, otherwise, the step 3 is carried out.
3) The main control module sends inquiry information to the optical fiber switch 1, if the inquiry success information is received, the optical fiber switch 1 is judged to be normal, the problem of other general modules is solved, otherwise, the optical fiber switch 1 has a problem, the main control module sets the state of the optical fiber switch 1 to be in an off-line state, and the optical fiber switch backup strategy is started.
4) The main control module sends messages to the main control module (standby), the universal module and the universal module (standby), informs the main control module (standby) to switch to the channel of the optical fiber switch 2, and receives and sends the messages through the optical fiber switch 2.
5) The master control module sets the role of the optical fiber switch 2 as FCS, and the optical fiber switch 2 completes backup switching work.
When the optical fiber switch 1 in the offline state is on line again by restarting or other modes, the main control module detects whether the optical fiber switch with the FCS role exists in the current system when receiving the on-line message of the optical fiber switch 1, and if so, the role of the optical fiber switch 1 is set as fcs_b.
Example 2
The embodiment provides a comprehensive avionics system backup method based on an optical fiber network, which is based on a comprehensive avionics system framework with the optical fiber network as communication, wherein the framework comprises a main control module and a universal module, each module is provided with a standby module, and each module is respectively connected to two optical fiber switches.
The main control module is mainly used for monitoring the state of each module, managing and controlling the backup of each module and configuring the resources of each module, and the universal module is mainly used for providing universal and special computing services according to task demands.
The invention provides three backup modes: the master control module backup mode, the universal module backup mode and the optical fiber switch backup mode are respectively used for backup and recovery of the master control module, the universal module and the optical fiber switch.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present invention, and such modifications and variations should also be regarded as being within the scope of the invention.
Claims (6)
1. A comprehensive avionics system for optimizing backup functionality, wherein modules in the comprehensive avionics system comprise: the system comprises a main control module, a general module and an optical fiber switch module, and a standby module is configured for each module; each main control module, the universal module and the standby module are respectively connected to two optical fiber switch modules, namely an optical fiber switch module 1 and an optical fiber switch module 2; thus, the standby module of the main control module is defined as a standby main control module; defining a standby module of the universal module as a standby universal module; in the optical fiber switch module 1 and the optical fiber switch module 2, one optical fiber switch module is a standby module of the other optical fiber switch module, and the standby module of the optical fiber switch module is defined as a standby optical fiber switch module;
the main control module is used for monitoring the state of each module, managing and controlling the backup of each module and configuring the resources of each module, and the universal module is used for providing universal and special computing services according to task demands;
in the normal working state of the comprehensive avionics system, the main control module monitors the states of the universal modules 1 to N and the optical fiber switch modules 1 and 2 in real time; the standby main control module is used for monitoring states of the main control module, the universal modules 1 to N and the optical fiber switch modules 1 and 2 in real time;
In the working process, the main control module sends messages to the universal module and the standby universal module at the same time, when receiving the messages, the standby universal module in a backup state only receives the messages from the main control module and other universal modules; the standby main control module only receives the message of the universal module, and the universal module sends the message to other universal modules and the main control module;
several roles are defined in the integrated avionics system: MC represents the master role of the system, MCB represents the master standby role of the system, DPT represents the master role of the universal module of the system, DPT_B represents the standby role of the universal module of the system, FCS represents the master role of the optical fiber switch of the system, and FCS_B represents the standby role of the optical fiber switch of the system; therefore, in each module in the comprehensive avionics system, the role of the master control module is MC, the role of the standby master control module is MCB, the roles of the general modules 1 to the general modules N are DPT, the roles of the standby general modules 1 to the standby general modules N are DPT_B, the roles of the optical fiber switch modules are FCS, and the roles of the standby optical fiber switch modules are FCS_B;
for the above-mentioned comprehensive avionics system architecture, the following three backup modes are included:
A. A master control module backup mode;
B. a universal module backup mode;
C. a fiber switch back-up mode;
the working flow of the backup mode of the main control module is as follows:
step A1: after the system is started normally, the main control module sends a periodic self-checking message to the standby main control module;
step A2: the standby main control module receives the periodic self-checking information of the main control module, if the periodic self-checking information is successfully acquired, the standby main control module continues to receive the periodic self-checking information, if not, whether the periodic self-checking information is not received for more than X times is judged, if not, the periodic self-checking information is continuously received, otherwise, the step A3 is carried out;
step A3: the standby main control module sets the state of the main control module to be an offline state, and starts a backup strategy;
step A4: the standby main control module sets the role of the standby main control module as MC, and opens a data transmission channel; at this time, the role is set as a standby master control module of the MC, and redefined as a master control module;
step A5: the main control module at the moment, namely the current main control module sends messages to other general modules, and the message content is the physical address and role of the current main control module;
step A6: the universal module sets the receiving and transmitting channels as the current main control module according to the received physical address and role information of the current main control module;
In the working flow of the backup mode of the main control module, when the main control module in an offline state is on line again through restarting or other modes, whether the main control module with the MC role exists in the current system is detected, if so, the main control module is set as the MCB, namely the main control module is changed and set as the backup main control module, and then the states of the main control module, the general module 1 to the general module N, the optical fiber switch module 1 and the optical fiber switch module 2 are monitored in real time;
the general module backup mode workflow is as follows:
step B1: after the system is started normally, the universal module sends a periodic self-checking message to the main control module;
step B2: the main control module receives the periodic self-checking information of the general module m, if the periodic self-checking information is successfully obtained, the periodic self-checking information is continuously received, if not, whether the periodic self-checking information is not received for more than X times is judged, if not, the periodic self-checking information is continuously received, otherwise, the step B3 is carried out;
step B3: the main control module sets the m state of the universal module to be an offline state, and starts a backup strategy;
step B4: the main control module sends a message to the standby universal module m to inform the standby universal module m to start backup activation;
step B5: the standby universal module m receives the starting activation message, sets the role of the standby universal module m to be DPT, opens a sending channel and informs the main control module that the starting is completed; at this time, the role has been set as a spare universal module m of the DPT, which is redefined as the universal module m;
Step B6: the main control module sends information to other general modules, and the content is the physical address and role of the general module m; when other universal modules need to communicate with the universal module m, only the universal module m with the current role of DPT of the system sends and receives messages;
step B7: the standby universal module m completes backup switching work and sends a periodic self-checking message to the main control module;
the optical fiber switch backup mode workflow comprises the following steps:
step C1: after the system is normally started, the two optical fiber exchanger modules work simultaneously, and the main control module and the universal module send and receive data through the optical fiber exchanger module 1 and the optical fiber exchanger module 2; the main control module and the universal module only process the data sent by the optical fiber exchanger module 1 by default;
step C2: the main control module periodically inquires the data transmission condition of the optical fiber switch module 1, if the data transmission exists, the data transmission condition is continuously and periodically inquired, otherwise, whether Y times of data transmission are exceeded or not is judged, if Y times of data transmission are not exceeded, the data transmission condition is continuously and periodically inquired, otherwise, the step C3 is carried out;
step C3: the main control module sends inquiry information to the optical fiber switch module 1, if the inquiry success information is received, the optical fiber switch module 1 is judged to be normal, the problems of other general modules are checked, otherwise, the optical fiber switch module 1 is judged to have problems, the main control module sets the state of the optical fiber switch module 1 to be in an off-line state, and an optical fiber switch backup strategy is started;
Step C4: the main control module sends information to the standby main control module, the universal module and the standby universal module, informs the standby main control module, the standby universal module and the standby universal module to switch to a channel of the optical fiber switch module 2, and receives and sends the information through the optical fiber switch module 2;
step C5: the master control module sets the role of the optical fiber switch module 2 as FCS, and the optical fiber switch module 2 completes backup switching work.
2. The integrated avionics system of claim 1 wherein m is less than or equal to N.
3. The integrated avionics system of claim 1, wherein in the general module backup mode workflow, when a general module m in an offline state is re-online by restarting or other means, it is detected whether a general module m in a DPT role exists in the current system, if so, its role is set to dpt_b, that is, the general module m is changed to be a standby general module m, and an online message, a physical address, and a role are notified to a main control module.
4. The integrated avionics system of claim 1, wherein when the off-line optical switch module 1 is re-booted or otherwise re-booted, the master control module detects whether an optical switch module with FCS role exists in the current system when receiving the on-line message from the optical switch module 1, and if so, sets the role of the optical switch module 1 to fcs_b.
5. The integrated avionics system of any one of claims 1-4 wherein the systems are integrated avionics systems.
6. The integrated avionics system of claim 1 wherein X is three and Y is five.
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