CN106059879A - Control system and control method thereof - Google Patents
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- CN106059879A CN106059879A CN201610323452.2A CN201610323452A CN106059879A CN 106059879 A CN106059879 A CN 106059879A CN 201610323452 A CN201610323452 A CN 201610323452A CN 106059879 A CN106059879 A CN 106059879A
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- 238000004891 communication Methods 0.000 claims abstract description 36
- 230000000694 effects Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
- H04L12/437—Ring fault isolation or reconfiguration
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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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Abstract
The invention discloses a control system and a control method thereof. The control system includes at least two groups of nodes. Each group of nodes includes a main node and a subsidiary node. Among groups of nodes, the main and the subsidiary nodes correspond in a one by one relation, and main nodes have same functions, and subsidiary nodes have same or similar functions. Each group of nodes has at least two nodes, and each node has two paths of communication interfaces. Each group of nodes are connected in an order of main and subsidiary nodes and are then connected in a head to tail enclosure so as to form two enclosed loop-shaped communication links which have opposite directions. The method is realized based on the system, and includes the following steps: one group of nodes being effective nodes which uses the loop-shaped communication links with the rest being redundant nodes; allocating addresses to each node; specifying information receiving, reading and transferring rules of each node, effective rules of each node, and effective changing rules of main and subsidiary nodes. According to the invention, the control system that uses enclosure redundancy technology, can guarantee normal work of the system under any single point fault and unrepeated multi-point faults, greatly increases work reliability of the system, and at the same time does not increase construction cost of the system.
Description
Technical field
The present invention relates to a kind of control system utilizing redundancy to improve system functional reliability, further relate to based on this control
System processed realizes the control method of raising system functional reliability.
Background technology
For important workplace, the system failure causes work to be paralysed, and can cause irreparable damage.Therefore, for
Improve the reliability of system work, generally use redundancy.The redundancy of existing raising system functional reliability is led to
It is often that the mode using identical systems to carry out backing up realizes system redundancy (as it is shown in figure 1, system A and system B are mutually redundant), when
During one system malfunctions, start another redundant system and be operated, safeguards system reliable operation.Though this redundancy
So improve the reliability of system work to a certain extent, but, occur owing to failure system being generally only respective nodes
Fault, other nodes all can continue to normally work, and after system respective nodes breaks down, whole system will quit work,
Substituted completely by redundant system.
The defect that above-mentioned existing redundant system exists is that the normal node in the system broken down cannot work on,
Cannot give full play to the ability to work of normal node, to improving, system functional reliability is very limited.
Summary of the invention
One of the technical problem to be solved in the present invention is to provide a kind of control system, overcomes existing redundant system to improve system
The defect that system functional reliability is limited in one's ability.
The two of the technical problem to be solved in the present invention are to provide a kind of control method, based on above-mentioned control system, overcome existing
Redundant system is had to improve the defect that system functional reliability is limited in one's ability.
The present invention solves one of its technical problem and be the technical scheme is that a kind of control system of structure, and its feature exists
In, including at least two group nodes, every group node includes host node and from main and subordinate node between node, node group and node group one by one
Correspondence, and master node functionality is identical, same or like from nodal function；The nodes of every group node is at least two, each described
Node has two-way communication interface；After every group node is linked in sequence by identical main and subordinate node, press between node group and node group
The host node of one group node connects connecting from node successively head and the tail of another group node, forms the annular communication link that both direction is contrary
Road.
In the control system of the present invention, described node group is two or three, and the nodes often organizing described node group is
Three to six.
In the control system of the present invention, including at least one pair of loop extension node and at least one single node, this loop
Expanding node has three road communication interfaces, and this single node has two-way communication interface；This loop extension node is arranged on described joint
Being connected with this two nodes group respectively between some group, described single node is connected to loop extension node described in a pair after being connected with each other
Constitute between 3rd road communication interface and expand loop.
The present invention solves the two of its technical problem and be the technical scheme is that a kind of control method of offer, based on as follows
Control system is controlled, it is characterised in that this control system includes that at least two group nodes, every group node include one to one
Host node that function is identical and function same or like from node, the nodes of every group node is at least two, each described joint
Point has two-way communication interface；After every group node is linked in sequence by main and subordinate node, by a group node between node group and node group
Host node connect closing from node successively head and the tail of another group node and connect, form the contrary closed ring communication link of both direction
Road；
Described control method includes:
When each described node is in normal condition, node described in a group is the effective node being in effective status, remaining
Described node is the redundant node being in redundant state；Described effective node uses an annular communication link transmission information；
One address of each described node distribution；
When the described destination address receiving information from node and the host node being in redundant state is this node address,
Read information content, otherwise forward information to lower node；The host node reception destination address being in effective status is this section
The information of dot address reading of content, but not forwarding information.
It is in the host node identification system topological of effective status, and specifies described from the effective status of node, be in redundancy
The described host node of state monitors the state of the described host node of effective status；
When described in effective status in system from node failure, be in the described host node of effective status and specify and be in redundancy
State is also changed to effective status from node redundancy from node corresponding to described fault, takes over this fault institute from node
There is work；
When the described host node fault of effective status in system, then a described host node of redundant state is changed to effectively
State, all working of the described host node of taking over fault, and reassign each from node state；
When described system occurs not repeat multipoint fault, and malfunctioning node causes communication loop to interrupt, and is in effective status
Described host node cannot specify other to correspond to described fault from the redundancy of node when node is changed to effective status, it is possible to refers to
Other described redundancy host nodes being changed to effective status from the redundancy of node from node corresponding to described fault fixed have been changed to
Effect state, take over all working of the described host node of former effective status, and specify with it other described corresponding from node and
The original effect remaining to normally work constitutes effective node group of normal work from node.
In the control method of the present invention, described control system includes at least one pair of loop extension node and at least one list
Node, this loop extension node has three road communication interfaces, and this single node has two-way communication interface；This loop extension node sets
Putting and be connected with this two nodes group respectively between described node group, described single node is connected to loop described in a pair after being connected with each other
Constitute between 3rd road communication interface of expanding node and expand loop；
Described control method includes:
Each described single node and one address of described loop extension node distribution；
Described single node receives the destination address of information when being this node address, reads information content, otherwise by information
It is forwarded to lower node；
The PORT COM being connected with described node group for described loop extension node, described loop extension node receives
When the destination address of information is this node address, reads information content, otherwise forward information to lower node；
The PORT COM being connected with described single node for described loop extension node, described loop extension node is effective
During state, only forwarding destination address is the data expanding the node in loop；When loop extension node is redundant state, this leads to
Communication interface quits work.
Implementing control system and the control method thereof of the present invention, compared with the prior art, it provides the benefit that:
1. the redundancy control system being connected in series by structure, it is possible to achieve any Single Point of Faliure and do not repeat multiple spot therefore
Under barrier state, safeguards system normally works, and gives full play to the ability to work of each normal node, is greatly improved system reliable operation
Property；
2. the system that is greatly improved realizes the motility of redundancy, does not increase system constructing cost simultaneously.
Accompanying drawing explanation
Fig. 1 is existing redundant system schematic diagram.
Fig. 2 is the node connection diagram of control system embodiment one of the present invention.
Fig. 3 is that after control system embodiment one interior joint b1 of the present invention damages, new performance loop constitutes schematic diagram.
Fig. 4 is that after control system embodiment one interior joint b1, c2 of the present invention damage, new performance loop constitutes schematic diagram.
Fig. 5 is the node connection diagram of control system embodiment two of the present invention.
Fig. 6 is the node connection diagram of control system embodiment three of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
As in figure 2 it is shown, in the present embodiment, the control system of the present invention includes two group node A1 and A2, and A1 group includes main
Node a1 and from node b1, c1, A2 group includes host node a2 and from node b2, c2.Accordingly, A1 group host node a1 is main with A2 group
Node a2 function is identical, and A1 group is same or like from node b2 function from node b1 and A2 group, A1 group from node c1 and A2 group from
Node c2 function is same or like.
Each node has two-way communication interface, and every group node is linked in sequence by main and subordinate node, and (such as, A1 group node is pressed
A1-b1-c1 is linked in sequence, or is linked in sequence according to a1-c1-b1), right later node group and another node group
Between by the host node of a group node connect another group node from node (the present embodiment be c1-a2 connect, c2-a1 connect) depend on
Secondary head and the tail are closed and are connected, and form the annular communication link that both direction is contrary, and one is work loop, and another is redundancy loop
Road.
In the present embodiment, the nodes of each node group is three.In other embodiments, the nodes of each node group
Two, four, five or above (i.e. more than two) can be taken, and meet main and subordinate node one_to_one corresponding between node group and node group, and main
Nodal function is identical, same or like from nodal function.
In the present embodiment, the quantity of node group is two.In other embodiments, the quantity of node group can take three, four,
Five or above (i.e. more than two).As it is shown in figure 5, node group quantity takes N group.
As shown in Figure 6, including a pair loop extension node x1, x2 and four single node d, e, f, g, loop extension node
X1, x2 have three road communication interfaces, and single node has two-way communication interface, loop extension node x1, x2 be arranged on node group A1,
Between A2, being connected with this two nodes group respectively (c1-x1-a2 connect, c2-x2-a1 connect), single node d, e, f, g are mutual
It is connected to after connection between this 3rd road communication interface to loop extension node x1, x2, constitutes and expand loop.
Loop extension node is used for building expansion loop.In the present embodiment, be provided with a pair loop extension node x1,
x2.In other embodiments, as required, can arrange two to, three to or multipair loop extension node.
Single node is not provided with redundant node, and the probability of damage of usual single node is little or be non-key node.The present embodiment with
Four single node are explained.In other embodiments, single node is at least one.Single node need to be with paired loop extension joint
Point coordinates to constitute expands loop.
The control method of the present invention realizes (referring to above-mentioned) based on control system as shown in Figure 2.
This control method includes:
When each node is in normal condition, arranging a group node is that the effective node being in effective status is (such as Fig. 2 institute
Showing, effective node is a1, b1, c1), remaining node is that the redundant node being in redundant state is (as in figure 2 it is shown, redundant node is
A2, b2, c2), effective node uses a closed ring communication link transmission information.
An address is distributed to each node.
When from node (include effectively from node b1, c1 and redundancy from node b2, c2) and the host node that is in redundant state
(a2) receive the destination address of information when being this node address, read information content, otherwise forward information to lower node.
The host node a1 being in effective status receives information the reading of content that destination address is this node address, but does not turns
Photos and sending messages, to avoid loop data to repeat.
The host node a1 being in effective status identifies system topological, and specifies the effective status from node.It is in redundancy shape
The host node a2 of state monitors the state of the host node a1 of effective status.
When in system effective status from node failure (as it is shown on figure 3, such as from node b1 fault), be in effective status
Host node a1 specify be in redundant state and correspond to this fault from a redundancy of node b1 from node (when include three groups with
During upper node group, the present embodiment is for from node b2) it is changed to effective status, take over this fault all working from node b1, structure
Become effective node group a1, b2, c1.
When the host node a1 fault of effective status in system, then a host node of redundant state is (when including more than three groups
During node group, the present embodiment is host node a2) it is changed to effective status, all working of the host node a1 of taking over fault, lay equal stress on
Newly specified each from node state.
After one malfunctions, malfunctioning node and the communicating interrupt of lower node on it.
(such as from node b1, c2 fault, as shown in Figure 4, " do not weigh when system occurs do not repeat multipoint fault from node
Multiple " refer to that two faults are from node non-corresponding node), the host node a1 being in effective status cannot specify corresponding to this fault from joint
The redundancy of some b1 is when node b2 is changed to effective status, it is possible to specify this to correspond to fault from the redundancy of node b1 from node b2
The redundancy host node a2 being changed to effective status is changed to effective status, takes over all works of the host node a1 of former effective status
Make, and the corresponding original effect normally worked from node b2 and remaining to specified with it constitutes effective joint of normal work from node c1
Point group a2, b2, c1.
As shown in Figure 6, include, when control system, the expansion that is made up of loop extension node x1, x2 and single node d, e, f, g
During loop, the control method of the present invention includes:
An address is distributed to each single node d, e, f, g and loop extension node x1, x2.
When the destination address that single node d, e, f, g receive information is this node address, reads information content, otherwise will
Information is forwarded to lower node.
The PORT COM being connected with node group A1, A2 for loop extension node x1, x2, loop extension node x1, x2 connect
Receive the destination address of information when being this node address, read information content, otherwise forward information to lower node.
The PORT COM that loop extension node x1, x2 are connected with single node d, e, f, g, when loop extension node x1,
When x2 is effective status, only forwarding destination address is the data expanding the node (i.e. single node d, e, f, g) in loop；Work as loop
When expanding node x1, x2 are redundant state, this communication interface quits work.
Claims (5)
1. a control system, it is characterised in that include that at least two group nodes, every group node include host node and from node, joint
Main and subordinate node one_to_one corresponding between some group and node group, and master node functionality is identical, same or like from nodal function；Often organize joint
The nodes of point is at least two, and each described node has two-way communication interface；Every group node is by identical main and subordinate node order
After connection, between node group with node group, connect being connected from node successively head and the tail of another group node by the host node of a group node,
Form the annular communication link that both direction is contrary.
2. control system as claimed in claim 1, it is characterised in that described node group is two or three, often organizes described joint
The nodes of some group is three to six.
3. control system as claimed in claim 1 or 2, it is characterised in that include at least one pair of loop extension node and at least
One single node, this loop extension node has three road communication interfaces, and this single node has two-way communication interface；This loop extension
Node is arranged between described node group and is connected with this two nodes group respectively, and described single node is connected to a pair institute after being connected with each other
State to constitute between the 3rd road communication interface of loop extension node and expand loop.
4. a control method, is controlled based on following control system, it is characterised in that this control system includes at least two groups
Node, every group node include function is identical one to one host node and function same or like from node, every group node
Nodes be at least two, each described node has two-way communication interface；After every group node is linked in sequence by main and subordinate node, joint
Connect closing from node successively head and the tail of another group node by the host node of a group node between some group and node group to be connected, form two
Individual closed ring communication link in opposite direction；
Described control method includes:
When each described node is in normal condition, node described in a group is the effective node being in effective status, described in remaining
Node is the redundant node being in redundant state；Described effective node uses an annular communication link transmission information；
One address of each described node distribution；
When the described destination address receiving information from node and the host node being in redundant state is this node address, read
Information content, otherwise forwards information to lower node；The host node reception destination address being in effective status is this node ground
The information of location reading of content, but not forwarding information.
It is in the host node identification system topological of effective status, and specifies described from the effective status of node, be in redundant state
Described host node monitor the state of described host node of effective status；
When described in effective status in system from node failure, be in the described host node of effective status and specify and be in redundant state
And it is changed to effective status from node redundancy from node corresponding to described fault, take over this fault all works from node
Make；
When the described host node fault of effective status in system, then a described host node of redundant state is changed to effective shape
State, all working of the described host node of taking over fault, and reassign each from node state；
When described system occurs not repeat multipoint fault, and malfunctioning node causes communication loop to interrupt, and is in the described of effective status
Host node cannot specify other to correspond to described fault from the redundancy of node when node is changed to effective status, it is possible to specifies it
The described redundancy host node that he is changed to effective status from the redundancy of node from node corresponding to described fault is changed to effective shape
State, take over all working of the described host node of former effective status, and specify with it other are described corresponding from node and remain to
Original effect of normal work constitutes effective node group of normal work from node.
5. control method as claimed in claim 4, it is characterised in that described control system includes that at least one pair of loop extension saves
Point and at least one single node, this loop extension node has three road communication interfaces, and this single node has two-way communication interface；Should
Loop extension node is arranged between described node group and is connected with this two nodes group respectively, and described single node connects after being connected with each other
Constitute between the 3rd road communication interface of loop extension node described in a pair and expand loop；
Described control method includes:
Each described single node and one address of described loop extension node distribution；
Described single node receives the destination address of information when being this node address, reads information content, otherwise information is forwarded
Supreme lower node；
The PORT COM being connected with described node group for described loop extension node, described loop extension node receives information
Destination address when being this node address, read information content, otherwise forward information to lower node；
The PORT COM being connected with described single node for described loop extension node, described loop extension node is effective status
Time, only forwarding destination address is the data expanding the node in loop；When loop extension node is redundant state, this communication connects
Mouth quits work.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2016100679295 | 2016-01-29 | ||
| CN201610067929 | 2016-01-29 |
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| CN106059879A true CN106059879A (en) | 2016-10-26 |
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| CN110247809A (en) * | 2019-07-09 | 2019-09-17 | 浙江中控技术股份有限公司 | Bicyclic network control system and communication control method |
| CN110502342A (en) * | 2019-08-16 | 2019-11-26 | 中科边缘智慧信息科技（苏州）有限公司 | A Mobile Edge Information Service Network in Intermittent Network Environment |
| CN110896543A (en) * | 2018-09-12 | 2020-03-20 | 宁德时代新能源科技股份有限公司 | Battery management system and method and device for transmitting information |
| CN112187607A (en) * | 2020-10-20 | 2021-01-05 | 南京科远智慧科技集团股份有限公司 | System applied to communication expansion of control system |
| CN118368042A (en) * | 2024-03-14 | 2024-07-19 | 成都谐盈科技有限公司 | Multi-node deployment communication method and system based on SCA |
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| CN118368042A (en) * | 2024-03-14 | 2024-07-19 | 成都谐盈科技有限公司 | Multi-node deployment communication method and system based on SCA |
| CN118368042B (en) * | 2024-03-14 | 2025-03-18 | 成都谐盈科技有限公司 | A multi-node deployment communication method and system based on SCA |
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