CN105681131A - Main-backup system and parallel outputting method thereof - Google Patents
Main-backup system and parallel outputting method thereof Download PDFInfo
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- CN105681131A CN105681131A CN201610105932.1A CN201610105932A CN105681131A CN 105681131 A CN105681131 A CN 105681131A CN 201610105932 A CN201610105932 A CN 201610105932A CN 105681131 A CN105681131 A CN 105681131A
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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
-
- 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
Abstract
The invention discloses a main-backup system; one of an A system and a B system which are taken as a hot backup to each other is taken as a main system, and the other is taken as a backup system; the main system carries out data collection from an IO device via an IO port, and carries out operation and two-out-of-two voting; the main system outputs a voted data message via two channels; the first channel directly outputs from the main system via the IO port; and the second channel firstly sends from the main system to the backup system and then outputs from the backup system via the IO port; in the second channel, the backup system, after receiving the data message sent by the main system, carries out two-out-of-two verification and voting on the received data message; if being passed by the verification and the voting, the data message is output directly; and if being not passed by the verification and the voting, the data message cannot be output and is abandoned directly. The invention further discloses a parallel outputting method of the main-backup system. The main-backup system and the parallel outputting method thereof disclosed by the invention can reduce the requirement of the system on switching time, can simplify the switching design and reduce the cost, and are beneficial to realizing the hot switching of a safety system.
Description
Technical field
The present invention relates to computer control field, particularly relate to a kind of main preparation system; The present invention also relates to the parallel output method of main preparation system.
Background technology
At safety control system design field, common safety body system structure comprises two and gets two, three get two and two take advantage of two get second-class, wherein, double 2-vote-2 system has RAMS (reliability, operability, maintainability relatively preferably because of it, security) index and applied widely in various safety control system, and double 2-vote-2 system two be synchronization and handover mechanism are the key factors affecting this type systematic RAMS index. Therefore, adopting the design method of main standby parallel output, being conducive to simplifying two is switched design, it is to increase the RAMS index of system.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of main preparation system, the standby output data tying up to the main system of real-time reception in operational process, and the IO synchronism output as main system, the requirement of system for switching time can be reduced, switched design can be simplified, reduce costs, and be conducive to realizing the hot-swap of security system. For this reason, the present invention also provides a kind of parallel output method of main preparation system.
For solving the problems of the technologies described above, main preparation system provided by the invention comprises A system and the B system of hot standby part each other.
A system is communicated with I/O device by I/O port, and B system is communicated with I/O device by I/O port.
Communicated by real-time Data Transmission passage between A system and B system.
In A system and B system one as main system, another is as standby system.
Described main system carries out data gathering by I/O port complete independently from described I/O device, carries out computing and carry out the two of operation result getting two votings.
IO after voting is exported data message and is exported by two passages by described main system, described I/O device is directly exported by I/O port by first channel by described main system, and second passage is first sent to described standby system by described main system, is exported by described I/O device by I/O port by described standby system.
In described second passage, after the described IO output data message receiving the transmission of described main system for system, the IO output data message received is carried out two and get two School Affairs votings, if School Affairs is voted through, directly export, if School Affairs voting not by; could not export and directly abandon.
Further improvement is, the forwarding time delay of the real-time Data Transmission passage between described A system and described B system to be met main preparation system to the performance index of the time of response of I/O port and I/O device self; The hardware reliability of the real-time Data Transmission passage between described A system and described B system is higher than the reliability index of I/O device.
Further improvement is, the real-time Data Transmission passage between described A system and described B system adopts point-to-point ethernet communication.
Further improvement is, in described second passage, also comprises the IO output data message to receiving and carry out security inspection after the described IO output data message receiving the transmission of described main system for system.
Further improvement is, described security inspection comprises: message order, ageing, integrity.
For solving the problems of the technologies described above, the parallel output method of main preparation system provided by the invention comprises the steps:
Step one, system is carried out initialize, initialize judge after completing the master in A system and B system standby be state, in A system and B system as main system, another is as being.
Set up real-time Data Transmission passage between step 2, A system and B system and communicate.
Step 3, carry out parallel output, comprising:
Described main system carries out data gathering by I/O port complete independently from described I/O device, carries out computing and carry out the two of operation result getting two votings.
IO after voting is exported data message and is exported by two passages by described main system, described I/O device is directly exported by I/O port by first channel by described main system, and second passage is first sent to described standby system by described main system, is exported by described I/O device by I/O port by described standby system.
In described second passage, after the described IO output data message receiving the transmission of described main system for system, the IO output data message received is carried out two and get two School Affairs votings, if School Affairs is voted through, directly export, if School Affairs voting not by; could not export and directly abandon.
Further improvement is, the forwarding time delay of the real-time Data Transmission passage between described A system and described B system to be met main preparation system to the performance index of the time of response of I/O port and I/O device self; The hardware reliability of the real-time Data Transmission passage between described A system and described B system is higher than the reliability index of I/O device.
Further improvement is, the real-time Data Transmission passage between described A system and described B system adopts point-to-point ethernet communication.
Further improvement is, in described second passage, also comprises the IO output data message to receiving and carry out security inspection after the described IO output data message receiving the transmission of described main system for system.
Further improvement is, described security inspection comprises: message order, ageing, integrity.
Main preparation system of the present invention adopts double 2-vote-2 system and adopts parallel output, the standby output data tying up to the main system of real-time reception in operational process, and the I/O synchronism output as main system, it is the mechanism of parallel output by this kind pair, the requirement of system for switching time can be reduced, switched design can be simplified, reduce costs, and be conducive to realizing the hot-swap of security system.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
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.
Embodiment
As shown in Figure 1, it is the topological schematic diagram of main preparation system of the embodiment of the present invention; Embodiment of the present invention main preparation system comprises the A system 1a and B system 1b of hot standby part each other.
A system 1a is communicated with I/O device 4 by I/O port 2a, and B system 1b is communicated with I/O device 4 by I/O port 2b.
Communicated by real-time Data Transmission passage between A system 1a and B system 1b. As shown in Figure 1, A system 1a and B system 1b adopts two to get two votings, and comprising two machine unit R1 and R2 all respectively, in Fig. 1, the machine unit R1 3a mark of A system 1a, machine unit R2 3b mark, and in Fig. 1, the machine unit R1 3c mark of B system 1b, machine unit R2 3d mark; Internal system real-time data communication is carried out between machine unit R1 and R2 of A system 1a, the machine unit R1 of the machine unit R1 and B system 1b of A system 1a is connected to data line 5a, the machine unit R2 of the machine unit R2 and B system 1b of A system 1a is connected to data line 5b, realizes the real-time data communication between system by data line 5a and 5b.
As shown in Figure 2, it is the time diagram of main preparation system of the embodiment of the present invention. In A system 1a and B system 1b one as main system, another is as standby system. In Fig. 2, the main B of A is standby represents that A system 1a is main system, and B system 1b is standby system; The main A of B is standby represents that B system 1b is main system, and A system 1a is standby system.
Described main system carries out data gathering by I/O port complete independently from described I/O device 4, carries out computing and carry out the two of operation result getting two votings. Also namely the data gathering of main system only has the acquisition channel 1 shown in a passage and Fig. 2. Machine unit R1 and R2 in main system carries out computing and this computing is safe computing, afterwards the operating structure of machine unit R1 and R2 is carried out two and gets two votings.
IO after voting is exported data message and is exported by two passages by described main system, described I/O device 4 is directly exported by I/O port by first channel by described main system, and second passage is first sent to described standby system by described main system, is exported by described I/O device 4 by I/O port by described standby system. In Fig. 2, first channel output channel 1 represents, second passage output channel 2 represents.
In described second passage, after the described IO output data message receiving the transmission of described main system for system, the IO output data message received is carried out two and get two School Affairs votings, if School Affairs is voted through, directly export, if School Affairs voting not by; could not export and directly abandon. In described second passage two get machine unit R1 and R2 that two School Affairs vote through in standby system and carry out, and carry parallel output finally by device 3.
In the embodiment of the present invention, owing to double machine parallel exports, communication between main standby system must adopt the communication passage of high reliability and high-transmission efficiency, with in the process guaranteeing main standby parallel output, the forwarding time delay brought by host-standby communication can meet system to the performance index of the time of response of I/O port and I/O device 4 self, such as: host-standby communication time delay is excessively long causes system output reaction times external relay that is elongated or that control by IO to fall etc.; The reliability of host-standby communication hardware can not lower than the reliability index of I/O device 4, such as: communication channel failure rate higher than I/O device or external relay etc. Being preferably, the real-time Data Transmission passage between described A system 1a and described B system 1b adopts point-to-point ethernet communication.
In described second passage, also comprise the IO output data message to receiving after the described IO output data message receiving the transmission of described main system for system and carry out security inspection.Described security inspection comprises: message order, ageing, integrity etc.
In existing double 2-vote-2 system, only main system exports; standby system does not export; like this in active-standby switch process; usually causing external relay because not having to export and fall, common terms of settlement adopts to delay to put rly., but such a process increases product cost; and switched design is a kind of external constraint by the slow performance putting rly.; in addition, some embody rule scene cannot use to delay and put rly., such as requirement being limited to device miniaturization etc. In this case, it is two that to be parallel output be exactly a kind of well selects. It is parallel output mode that the main preparation system of the embodiment of the present invention adopts two, can in active-standby switch process, for some time is kept to export by standby system, play the slow effect putting rly., this output hold-time requires as long as can meet security of system, the performance requriements of external relay equipment need not be considered, such that it is able to break away from the external constraint of switched design, it is thus possible to reduce the requirement of system for switching time, switched design can be simplified, reduce product cost, and be conducive to realizing the hot-swap of security system.
The parallel output method of embodiment of the present invention main preparation system comprises the steps:
Step one, system is carried out initialize, initialize judge after completing the master in A system 1a and B system 1b standby be state, in A system 1a and B system 1b as main system, another is as standby system. Being that the main B of A is standby after initialize in Fig. 2, the main A of B is standby to be obtained by switching.
Set up real-time Data Transmission passage between step 2, A system 1a and B system 1b and communicate. The forwarding time delay of the real-time Data Transmission passage between described A system 1a and described B system 1b to be met main preparation system to the performance index of the time of response of I/O port and I/O device 4 self; The hardware reliability of the real-time Data Transmission passage between described A system 1a and described B system 1b is higher than the reliability index of I/O device 4. In the embodiment of the present invention, the real-time Data Transmission passage between described A system 1a and described B system 1b adopts point-to-point ethernet communication.
Step 3, carry out parallel output, comprising:
Described main system carries out data gathering by I/O port complete independently from described I/O device 4, carries out computing and carry out the two of operation result getting two votings.
IO after voting is exported data message and is exported by two passages by described main system, described I/O device 4 is directly exported by I/O port by first channel by described main system, and second passage is first sent to described standby system by described main system, is exported by described I/O device 4 by I/O port by described standby system.
In described second passage, after the described IO output data message receiving the transmission of described main system for system, the IO output data message received is carried out two and get two School Affairs votings, if School Affairs is voted through, directly export, if School Affairs voting not by; could not export and directly abandon.
In described second passage, also comprise the IO output data message to receiving after the described IO output data message receiving the transmission of described main system for system and carry out security inspection. Described security inspection comprises: message order, ageing, integrity etc.
Above by specific embodiment to invention has been detailed description, but these are not construed as limiting the invention. Without departing from the principles of the present invention, the technician of this area also can make many distortion and improvement, and these also should be considered as protection scope of the present invention.
Claims (10)
1. a main preparation system, it is characterised in that: A system and the B system comprising hot standby part each other;
A system is communicated with I/O device by I/O port, and B system is communicated with I/O device by I/O port;
Communicated by real-time Data Transmission passage between A system and B system;
In A system and B system one as main system, another is as standby system;
Described main system carries out data gathering by I/O port complete independently from described I/O device, carries out computing and carry out the two of operation result getting two votings;
IO after voting is exported data message and is exported by two passages by described main system, described I/O device is directly exported by I/O port by first channel by described main system, and second passage is first sent to described standby system by described main system, is exported by described I/O device by I/O port by described standby system;
In described second passage, after the described IO output data message receiving the transmission of described main system for system, the IO output data message received is carried out two and get two School Affairs votings, if School Affairs is voted through, directly export, if School Affairs voting not by; could not export and directly abandon.
2. main preparation system as claimed in claim 1, it is characterised in that: the forwarding time delay of the real-time Data Transmission passage between described A system and described B system to be met main preparation system to the performance index of the time of response of I/O port and I/O device self; The hardware reliability of the real-time Data Transmission passage between described A system and described 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 passage between described A system and described B system adopts point-to-point ethernet communication.
4. main preparation system as claimed in claim 1, it is characterised in that: in described second passage, described standby system receives also to comprise after the IO that described main system sends exports data message and the IO received is exported data message carries out security inspection.
5. main preparation system as claimed in claim 4, it is characterised in that: described security inspection comprises: message order, ageing, integrity.
6. the parallel output method of a main preparation system, it is characterised in that, comprise the steps:
Step one, system is carried out initialize, initialize judge after completing the master in A system and B system standby be state, in A system and B system as main system, another is as being;
Set up real-time Data Transmission passage between step 2, A system and B system and communicate;
Step 3, carry out parallel output, comprising:
Described main system carries out data gathering by I/O port complete independently from described I/O device, carries out computing and carry out the two of operation result getting two votings;
IO after voting is exported data message and is exported by two passages by described main system, described I/O device is directly exported by I/O port by first channel by described main system, and second passage is first sent to described standby system by described main system, is exported by described I/O device by I/O port by described standby system;
In described second passage, after the described IO output data message receiving the transmission of described main system for system, the IO output data message received is carried out two and get two School Affairs votings, if School Affairs is voted through, directly export, if School Affairs voting not by; could not export and directly abandon.
7. the parallel output method of main preparation system as claimed in claim 6, it is characterised in that: the forwarding time delay of the real-time Data Transmission passage between described A system and described B system to be met main preparation system to the performance index of the time of response of I/O port and I/O device self;The hardware reliability of the real-time Data Transmission passage between described A system and described B system is higher than the reliability index of I/O device.
8. the parallel output method of main preparation system as claimed in claim 7, it is characterised in that: the real-time Data Transmission passage between described A system and described B system adopts point-to-point ethernet communication.
9. the parallel output method of main preparation system as claimed in claim 6, it is characterised in that: in described second passage, described standby system receives also to comprise after the IO that described main system sends exports data message and the IO received is exported data message carries out security inspection.
10. the parallel output method of main preparation system as claimed in claim 9, it is characterised in that: described security inspection comprises: message order, ageing, integrity.
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| CN201610105932.1A CN105681131B (en) | 2016-02-26 | 2016-02-26 | Main preparation system and its parallel output method |
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| CN107592187A (en) * | 2017-09-20 | 2018-01-16 | 成都中科信息技术有限公司 | A kind of means of voting based on binary channels voting system |
| CN108011698A (en) * | 2017-11-13 | 2018-05-08 | 北京全路通信信号研究设计院集团有限公司 | A kind of RSSP-I safety communicating method synchronous based on double systems |
| CN108062085A (en) * | 2017-11-13 | 2018-05-22 | 北京全路通信信号研究设计院集团有限公司 | Control method and control system |
| CN108082219A (en) * | 2017-11-10 | 2018-05-29 | 北京全路通信信号研究设计院集团有限公司 | One kind 2 multiplies 2 and takes 2 redundancy structure data processing methods |
| CN111555832A (en) * | 2020-04-22 | 2020-08-18 | 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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| CN105681131B (en) | 2019-03-05 |
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