CN105681131B - Main preparation system and its parallel output method - Google Patents
Main preparation system and its parallel output method Download PDFInfo
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- CN105681131B CN105681131B CN201610105932.1A CN201610105932A CN105681131B CN 105681131 B CN105681131 B CN 105681131B CN 201610105932 A CN201610105932 A CN 201610105932A CN 105681131 B CN105681131 B CN 105681131B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
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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
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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
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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- Environmental & Geological Engineering (AREA)
- Hardware Redundancy (AREA)
Abstract
The invention discloses a kind of main preparation systems, each other a conduct principal series in the A system and B system of warm back-up, the standby system of another conduct；Principal series carries out data acquisition from I/O device by I/O port, and progress operation and two take two votings；Principal series is by the data message after voting by two channel outputs, and first passage is directly exported by principal series by I/O port, and second channel is first sent to by principal series and is exported for system, again by standby system by I/O port；In second channel, standby system takes two verifications and voting to the data message progress two received after receiving the data message that principal series is sent, and directly output if if verification and voting through directly is abandoned if verifying and deciding by vote to export not if.The invention also discloses a kind of parallel output methods of main preparation system.The present invention can reduce requirement of the system for switching time, can simplify switched design, reduce cost, and be advantageously implemented the hot-swap of security system.
Description
Technical field
The present invention relates to computer control fields, more particularly to a kind of main preparation system；The invention further relates to main preparation systems
Parallel output method.
Background technique
In safety control system design field, common security system framework takes two including two, and two from three and two multiply two and take
It is second-class, wherein double 2-vote-2 system is because it is with relatively good RAMS (reliability, availability is maintainable, safety)
Index and widely applied in various safety control systems, and double systems of double 2-vote-2 system are synchronous and handover mechanism
It is the key factor for influencing such system RAMS index again.Therefore, using the design method of active and standby parallel output, be conducive to
Simplifying double is switched design, improves the RAMS index of system.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of main preparation system, standby system real-time reception master in the process of running
The output data of system, and the IO synchronism output as principal series, can reduce requirement of the system for switching time, can simplify switching and set
It counts, reduce cost, and be advantageously implemented the hot-swap of security system.For this purpose, the present invention also provides a kind of the parallel of main preparation system
Output method.
In order to solve the above technical problems, main preparation system provided by the invention includes the A system and B system of warm back-up each other.
A system is communicated by I/O port and I/O device, and B system is communicated by I/O port and I/O device.
It is communicated between A system and B system by real-time Data Transmission channel.
A conduct principal series, the standby system of another conduct in A system and B system.
The principal series carries out data acquisition from the I/O device by I/O port complete independently, carries out operation and is transported
Calculate result two take two votings.
By the IO output data message after voting by two channel outputs, first passage is led to the principal series by the principal series
It crosses I/O port directly to export the I/O device, second channel is first sent to the standby system by the principal series, again by the standby system
The I/O device is exported by I/O port.
In the second channel, the standby system is received after the IO output data message that the principal series is sent to receiving
IO output data message carries out two and takes two verifications and voting, directly output if if verification and voting through, if verification and table
Never directly abandoned and cannot then export.
A further improvement is that the Forwarding Latency in the real-time Data Transmission channel between the A system and the B system will meet
Performance indicator of the main preparation system to the response time of I/O port and I/O device itself；Real-time number between the A system and the B system
It is higher than the reliability index of I/O device according to the hardware reliability of transmission channel.
A further improvement is that the real-time Data Transmission channel between the A system and the B system uses point-to-point ether
Network Communication.
A further improvement is that the standby system receives the IO output data that the principal series is sent in the second channel
It further include that security inspection is carried out to the IO output data message received after message.
A further improvement is that the security inspection includes: message sequence, timeliness, integrality.
In order to solve the above technical problems, the parallel output method of main preparation system provided by the invention includes the following steps:
Step 1: initializing to system, active and standby system's state in A system and B system, A system and B are judged after the completion of initialization
A conduct principal series, the standby system of another conduct in system.
Step 2: establishing real-time Data Transmission channel between A system and B system and being communicated.
Step 3: carrying out parallel output, comprising:
The principal series carries out data acquisition from the I/O device by I/O port complete independently, carries out operation and is transported
Calculate result two take two votings.
By the IO output data message after voting by two channel outputs, first passage is led to the principal series by the principal series
It crosses I/O port directly to export the I/O device, second channel is first sent to the standby system by the principal series, again by the standby system
The I/O device is exported by I/O port.
In the second channel, the standby system is received after the IO output data message that the principal series is sent to receiving
IO output data message carries out two and takes two verifications and voting, directly output if if verification and voting through, if verification and table
Never directly abandoned and cannot then export.
A further improvement is that the Forwarding Latency in the real-time Data Transmission channel between the A system and the B system will meet
Performance indicator of the main preparation system to the response time of I/O port and I/O device itself；Real-time number between the A system and the B system
It is higher than the reliability index of I/O device according to the hardware reliability of transmission channel.
A further improvement is that the real-time Data Transmission channel between the A system and the B system uses point-to-point ether
Network Communication.
A further improvement is that the standby system receives the IO output data that the principal series is sent in the second channel
It further include that security inspection is carried out to the IO output data message received after message.
A further improvement is that the security inspection includes: message sequence, timeliness, integrality.
Main preparation system of the present invention is using double 2-vote-2 system and uses parallel output, and standby system connects in real time in the process of running
The output data of principal series, and the I/O synchronism output as principal series are received, is the mechanism of parallel output by this pair, system can be reduced
The requirement united for switching time, can simplify switched design, reduce cost, and be advantageously implemented the hot-swap of security system,.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:
Fig. 1 is the topological schematic diagram of the main preparation system of the embodiment of the present invention；
Fig. 2 is the time diagram of the main preparation system of the embodiment of the present invention.
Specific embodiment
As shown in Figure 1, being the topological schematic diagram of the main preparation system of the embodiment of the present invention；Main preparation system packet of the embodiment of the present invention
Include the A system 1a and B system 1b of warm back-up each other.
A system 1a is communicated by I/O port 2a and I/O device 4, and B system 1b is led to by I/O port 2b and I/O device 4
Letter.
It is communicated between A system 1a and B system 1b by real-time Data Transmission channel.As shown in Figure 1, A system 1a and B system 1b are
Take two votings using two, and all respectively include two arithmetic unit R1 and R2, in Fig. 1 the arithmetic unit R1 of A system 1a marked with 3a,
Arithmetic unit R2 is marked with 3b, and the arithmetic unit R1 of B system 1b is marked with 3c in Fig. 1, arithmetic unit R2 is marked with 3d；A system 1a's
Internal system real-time data communication, the arithmetic unit of the arithmetic unit R1 and B system 1b of A system 1a are carried out between arithmetic unit R1 and R2
R1 is all connected to data line 5a, and the arithmetic unit R2 of the arithmetic unit R2 and B system 1b of A system 1a is all connected to data line 5b, passes through
Real-time data communication between data line 5a and 5b realization system.
As shown in Fig. 2, being the time diagram of the main preparation system of the embodiment of the present invention.A work in A system 1a and B system 1b
For principal series, the standby system of another conduct.The main B of A is standby in Fig. 2 indicates that A system 1a is principal series, and B system 1b is standby system；The main A of B is standby to indicate B system 1b
For principal series, A system 1a is standby system.
The principal series carries out data acquisition from the I/O device 4 by I/O port complete independently, carries out operation and progress
The two of operation result take two votings.Namely the data acquisition of principal series only has a channel, that is, acquisition channel shown in Fig. 21.It is main
It is safe operation that arithmetic unit R1 and R2 in system, which carry out operation and the operation, later to the operation knot of arithmetic unit R1 and R2
Structure carries out two and takes two votings.
By the IO output data message after voting by two channel outputs, first passage is led to the principal series by the principal series
It crosses I/O port directly to export the I/O device 4, second channel is first sent to the standby system by the principal series, again by the standby system
The I/O device 4 is exported by I/O port.First passage output channel 1 indicates in Fig. 2, second channel output channel 2
It indicates.
In the second channel, the standby system is received after the IO output data message that the principal series is sent to receiving
IO output data message carries out two and takes two verifications and voting, directly output if if verification and voting through, if verification and table
Never directly abandoned and cannot then export.Two in the second channel take two verifications and vote through the operation in standby system
Device R1 and R2 are carried out, and carry parallel output finally by device 3.
In the embodiment of the present invention, since double machine parallel exports, the communication between active and standby system must use high reliability and height
The communication channel of efficiency of transmission can be expired during ensuring active and standby parallel output by host-standby communication bring Forwarding Latency
Pedal system to the performance indicator of the response time of I/O port and I/O device 4 itself, such as: host-standby communication delay is too long to lead to system
The output-response time is elongated or is fallen etc. by the external relay that IO is controlled；The reliability of host-standby communication hardware can not be low
In the reliability index of I/O device 4, such as: communication channel high failure rate is in I/O device or external relay etc..Preferably,
Real-time Data Transmission channel between the A system 1a and the B system 1b uses point-to-point ethernet communication.
It further include docking after the IO output data message that the principal series transmission is received for system in the second channel
The IO output data message received carries out security inspection.The security inspection includes: message sequence, timeliness, integrality
Deng.
There was only principal series output in existing double 2-vote-2 system, standby system does not export, in this way during active-standby switch, usually
External relay be will lead to because falling without output, common solution is using slow release relay, but this method
Product cost is increased, and the performance of slow release relay is a kind of external constraint to switched design, in addition, some concrete applications
Scene is not available slow release relay, such as the requirement for being limited to device miniaturization etc..In this case, double is simultaneously
Row output is exactly a kind of selection well.It is parallel output mode that the main preparation system of the embodiment of the present invention, which uses double, can be active and standby
In handoff procedure, is kept for a period of time export by standby system, play the role of slow release relay, as long as the output holding time can
Meet system safety requirements, it is not necessary to the performance requirement of external relay equipment is considered, so as to get rid of switched design
External constraint can simplify switched design, reduce product cost, and is advantageous so as to reduce requirement of the system for switching time
In the hot-swap for realizing security system.
The parallel output method of main preparation system of the embodiment of the present invention includes the following steps:
Step 1: initializing to system, active and standby system's state in A system 1a and B system 1b, A are judged after the completion of initialization
It is one in 1a and B system 1b as principal series, the standby system of another conduct.Standby for the main B of A after initializing in Fig. 2, the main A of B is standby by cutting
It gets in return.
Step 2: establishing real-time Data Transmission channel between A system 1a and B system 1b and being communicated.The A system 1a and described
The Forwarding Latency in the real-time Data Transmission channel between B system 1b will meet response time and I/O device of the main preparation system to I/O port
4 itself performance indicators；The hardware reliability in the real-time Data Transmission channel between the A system 1a and the B system 1b is higher than
The reliability index of I/O device 4.Real-time Data Transmission channel in the embodiment of the present invention, between the A system 1a and the B system 1b
Using point-to-point ethernet communication.
Step 3: carrying out parallel output, comprising:
The principal series carries out data acquisition from the I/O device 4 by I/O port complete independently, carries out operation and progress
The two of operation result take two votings.
By the IO output data message after voting by two channel outputs, first passage is led to the principal series by the principal series
It crosses I/O port directly to export the I/O device 4, second channel is first sent to the standby system by the principal series, again by the standby system
The I/O device 4 is exported by I/O port.
In the second channel, the standby system is received after the IO output data message that the principal series is sent to receiving
IO output data message carries out two and takes two verifications and voting, directly output if if verification and voting through, if verification and table
Never directly abandoned and cannot then export.
It further include docking after the IO output data message that the principal series transmission is received for system in the second channel
The IO output data message received carries out security inspection.The security inspection includes: message sequence, timeliness, integrality
Deng.
The present invention has been described in detail through specific embodiments, but these are not constituted to limit of the invention
System.Without departing from the principles of the present invention, those skilled in the art can also make many modification and improvement, these are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of main preparation system, it is characterised in that: A system and B system including warm back-up each other；
A system is communicated by I/O port and I/O device, and B system is communicated by I/O port and I/O device；
It is communicated between A system and B system by real-time Data Transmission channel；
A conduct principal series, the standby system of another conduct in A system and B system；
The principal series carries out data acquisition from the I/O device by I/O port complete independently, carries out operation and carries out operation knot
The two of fruit take two votings；
For the principal series by the IO output data message after voting by two channel outputs, first passage passes through IO by the principal series
Port directly exports the I/O device, and second channel is first sent to the standby system by the principal series, is passed through again by the standby system
I/O port exports the I/O device；
It is defeated to the IO received after the IO output data message that the principal series transmission is received for system in the second channel
Data message carries out two and takes two verifications and voting out, directly output if if verification and voting through, if verification and voting are not
It is directly abandoned and cannot then export；
Main preparation system is parallel output mode using two the double of channel output, can be kept during active-standby switch by standby system
A period of time exports, and plays the role of slow release relay, as long as the time that standby system keeps can satisfy system safety requirements,
It need not consider the performance requirement of external relay equipment.
2. main preparation system as described in claim 1, it is characterised in that: the real-time Data Transmission between the A system and the B system
The Forwarding Latency in channel will meet main preparation system to the performance indicator of the response time of I/O port and I/O device itself；The A system
The hardware reliability in the real-time Data Transmission channel between the B system is higher than the reliability index of I/O device.
3. main preparation system as claimed in claim 2, it is characterised in that: the real-time Data Transmission between the A system and the B system
Channel uses point-to-point ethernet communication.
4. main preparation system as described in claim 1, it is characterised in that: in the second channel, the standby system receives described
It further include that security inspection is carried out to the IO output data message received after the IO output data message that principal series is sent.
5. main preparation system as claimed in claim 4, it is characterised in that: the security inspection includes: message sequence, timeliness
Property, integrality.
6. a kind of parallel output method of main preparation system, which comprises the steps of:
Step 1: initialize to system, active and standby system's state in A system and B system is judged after the completion of initialization, in A system and B system
One as principal series, another is as standby system；
Step 2: establishing real-time Data Transmission channel between A system and B system and being communicated；
Step 3: carrying out parallel output, comprising:
The principal series carries out data acquisition from the I/O device by I/O port complete independently, carries out operation and carries out operation knot
The two of fruit take two votings；
For the principal series by the IO output data message after voting by two channel outputs, first passage passes through IO by the principal series
Port directly exports the I/O device, and second channel is first sent to the standby system by the principal series, is passed through again by the standby system
I/O port exports the I/O device；
It is defeated to the IO received after the IO output data message that the principal series transmission is received for system in the second channel
Data message carries out two and takes two verifications and voting out, directly output if if verification and voting through, if verification and voting are not
It is directly abandoned and cannot then export；
Main preparation system is parallel output mode using two the double of channel output, can be kept during active-standby switch by standby system
A period of time exports, and plays the role of slow release relay, as long as the time that standby system keeps can satisfy system safety requirements,
It need not consider the performance requirement of external relay equipment.
7. the parallel output method of main preparation system as claimed in claim 6, it is characterised in that: between the A system and the B system
The Forwarding Latency in real-time Data Transmission channel to meet main preparation system to the property of the response time of I/O port and I/O device itself
It can index；The hardware reliability in the real-time Data Transmission channel between the A system and the B system is higher than the reliability of I/O device
Index.
8. the parallel output method of main preparation system as claimed in claim 7, it is characterised in that: between the A system and the B system
Real-time Data Transmission channel use point-to-point ethernet communication.
9. the parallel output method of main preparation system as claimed in claim 6, it is characterised in that: described in the second channel
Standby system further includes pacifying to the IO output data message received after receiving the IO output data message that the principal series is sent
Full property inspection.
10. the parallel output method of main preparation system as claimed in claim 9, it is characterised in that: the security inspection includes:
Message sequence, timeliness, integrality.
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107592187B (en) * | 2017-09-20 | 2020-03-20 | 成都中科信息技术有限公司 | Voting method based on dual-channel voting system |
| CN108082219B (en) * | 2017-11-10 | 2021-01-22 | 北京全路通信信号研究设计院集团有限公司 | 2-by-2-out-of-2 redundant structure data processing method |
| CN108011698B (en) * | 2017-11-13 | 2020-05-22 | 北京全路通信信号研究设计院集团有限公司 | RSSP-I secure communication method based on dual-system synchronization |
| CN108062085B (en) * | 2017-11-13 | 2020-05-22 | 北京全路通信信号研究设计院集团有限公司 | Control method and control system |
| CN111555832B (en) * | 2020-04-22 | 2022-02-18 | 中国电子科技集团公司第五十四研究所 | 1+1 hot backup dual-channel synchronization and maintenance method based on continuous frame positioning |
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