CN111273541A - Control system and method of virtual redundant controller based on communication - Google Patents
Control system and method of virtual redundant controller based on communication Download PDFInfo
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- CN111273541A CN111273541A CN202010259081.2A CN202010259081A CN111273541A CN 111273541 A CN111273541 A CN 111273541A CN 202010259081 A CN202010259081 A CN 202010259081A CN 111273541 A CN111273541 A CN 111273541A
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses a control system and a method of a virtual redundant controller based on communication, which comprises a plurality of unit control devices connected through a network, wherein each unit control device comprises: a controller having a communication interface for communication sharing, and executing a service request received through the communication interface; the state monitoring unit is connected with the controller and comprises at least one state information sharing area SSA for sending the state monitoring information of the controller and at least one state information receiving area RSA for receiving the state monitoring information of the controller; the program storage unit is connected with the controller and comprises at least one program sharing area SPA for transmitting the virtual controller program and at least one program receiving area RPA for receiving the virtual controller program. The invention reasonably configures and manages a plurality of redundant controllers in the control system through the state monitoring unit and the program storage unit, provides a more convenient method for controller redundancy, and realizes the redundancy of the controller on the premise of not additionally arranging a hardware redundant controller.
Description
Technical Field
The invention relates to the technical field of industrial control, in particular to a control system and a method of a virtual redundant controller based on communication.
Background
With the continuous development of industrial control technology, the automation degree of industrial equipment and production process is more and more complicated. In an industrial control system, a controller is a core component of the system. Due to the development of modern production capacity, some large-scale industrial production lines often require continuous operation of industrial equipment without stopping, and controllers with higher reliability are difficult to ensure zero-fault continuous operation, so that a controller redundancy method is required to maintain the continuous operation of the system.
However, the existing solution does not clearly monitor and record the controller status of a plurality of unit control devices in the control system, and there is no transfer of controller status information between the unit control devices, and when a task allocation request is made to the control system with redundant controllers, it is easy to cause slow execution caused by suspending the request or allocating tasks to the controllers with high load; meanwhile, the calling and selecting methods of a plurality of redundant controllers in the existing control system are not perfect, so that the execution efficiency of the controllers in the existing industrial control system is not high.
Disclosure of Invention
The present invention is directed to a control system and method for a virtual redundant controller based on communication.
A control system of a communication-based virtual redundant controller, comprising a plurality of unit control devices connected through a network, the unit control devices comprising:
a controller having a plurality of communication interfaces for performing communication sharing, and executing a service request received through the communication interfaces;
the state monitoring unit is connected with the controller and comprises at least one state information sharing area SSA for sending the state monitoring information of the controller and at least one state information receiving area RSA for receiving the state monitoring information of the controller; the state information sharing area SSA is used for storing controller state information which is output by the controller and is used for other unit control devices to communicate and share the unit control device; the state information receiving area RSA is used for storing the state information of the controller shared by the communication of other unit control devices;
the program storage unit is connected with the controller and comprises at least one program sharing area SPA for sending the virtual controller program and at least one program receiving area RPA for receiving the virtual controller program, the program sharing area SPA is used for storing the controller program for other unit control devices to communicate and share the virtual redundancy unit control device, and the program receiving area RPA for receiving the virtual controller program is used for storing the unit controller as the controller program of the virtual redundancy of other unit control devices.
Further, a control system of a virtual redundant controller based on communication, wherein the communication among the program storage units of a plurality of unit control devices adopts active sharing communication; the active sharing communication comprises that the unit control device transmits the relevant controller program in the program sharing area SPA to the program receiving area RPA of other unit control devices in an active mode, or actively receives the controller program sent by other unit control devices and stores the controller program in the program receiving area RPA.
Further, a control system of a virtual redundant controller based on communication, communication between program storage units of a plurality of unit control devices employs request sharing communication; the request sharing communication includes that the unit control device transmits the controller program in the self program sharing area SPA to the unit control device sending the request after receiving the request of other unit control devices, the unit control device sending the request stores the obtained controller program in the self program sharing area SPA, or receives the controller program sent by other unit control devices after sending the virtual controller program sharing request to other unit control devices, and stores the controller program in the program receiving area RPA.
Further, the control system of the virtual redundant controller based on communication adopts timing sharing communication for communication among the state monitoring units of a plurality of unit control devices; the timing sharing communication comprises the step of sharing the controller state information of the state monitoring unit to the state information receiving area RSA of other state monitoring units through the state information sharing area SSA at the preset interval time point, or the step of receiving the controller state information of the state monitoring unit shared by the state information sharing area SSA of other state monitoring units through the state information receiving area RSA at the preset interval time point.
Further, a synchronous communication mode of sharing synchronization with a controller program is adopted among state monitoring units of a plurality of unit control devices, when a program storage unit SPA transmits the controller program to other unit control devices, a state information receiving area RSA synchronously receives controller state information shared by other unit control devices, or when a program storage unit RPA receives the controller program shared by other unit control devices, the state information receiving area RSA synchronously transmits controller state information shared by a state information sharing area SSA in the unit control devices.
The control system of the virtual redundant controller based on communication also comprises a redundant virtual controller sharing server which is communicated with the unit control device, the unit control device executes the virtual controller programs of other unit controllers according to the server instruction and the current controller state information, and the unit control device is used as the virtual redundant controller of the appointed unit control device or/and a plurality of unit control devices in a sharing hot standby mode or sends the virtual controller programs to the appointed unit controllers according to the server instruction and the state information of other unit controllers.
Further, the control system of the virtual redundant controller based on communication, the shared server is used for managing and saving the virtual controller program and the control state information transmitted by the unit control device; meanwhile, the authority of each unit control device is controlled, including whether a certain unit control device can transmit the controller program with other unit control devices or not is limited; limiting the transmission of a certain unit control device and other unit control devices for the virtual redundancy controller program in an active mode and/or a request sending mode; and limiting the transmission mode of the controller state information between a certain unit control device and other unit control devices.
A control method of a control system of a virtual redundant controller based on communication comprises a controller program acquisition step, a controller program sharing step, a controller state information acquisition step and a controller state information sharing step;
the controller program acquiring step comprises:
s11: each unit control device receives the acquired controller program;
s12: the controller saves the controller program in step S11 to the program receiving area RPA of the program storage unit;
the controller program sharing step comprises the following steps:
s21: the controller saves a controller program to be shared to a program sharing area SPA of the program storage unit;
s22: the respective unit control devices share the controller program of the program sharing area SPA in step S21;
the controller state information acquiring step includes:
s31: each unit control device receives the acquired controller state information respectively;
s32: the controller stores the controller state information in the step S31 to the state information receiving area RSA of the state monitoring unit;
the controller state information sharing step includes:
s41: the controller stores the controller state information to be shared to a state information sharing area SSA of the state monitoring unit;
s42: the respective unit control devices share the controller status information of the status information sharing area SSA in step S31.
Further, the control method of the virtual redundant controller based on communication comprises two communication methods of active sharing communication and request sharing communication;
the actively shared communication includes:
(1) the unit control device transmits the relevant controller program in the program sharing area SPA to the program receiving area RPA of other unit control devices in an active mode;
(2) actively receiving a controller program sent by a control device of other units, and storing the controller program in a program receiving area RPA;
the requesting a shared communication comprises:
(1) after receiving the requests of other unit control devices, the unit control device transmits the controller programs in the program sharing area SPA to the unit control device sending the requests, and the unit control device sending the requests stores the obtained controller programs in the program sharing area SPA;
(2) after a virtual controller program sharing request is sent to other unit control devices, the controller programs sent from the other unit control devices are received and stored in a program receiving area RPA.
Further, a control method of a virtual redundant controller based on communication, wherein the controller state information acquisition and controller state information comprises two communication methods of timing sharing communication and synchronous sharing communication;
the timing sharing communication includes:
(1) the timing shared communication comprises sharing the controller state information of the state monitoring unit to the state information receiving area RSA of other state monitoring units through the state information sharing area SSA at a preset interval time point;
(2) receiving controller state information of state monitoring units shared by state information sharing areas SSA of other state monitoring units through state information receiving areas RSA at preset interval time points;
the synchronous shared communication includes:
(1) when the program storage unit SPA transmits the controller program to other unit control devices, the state information receiving area RSA synchronously receives the controller state information shared by other unit control devices;
(2) the controller state information shared by the state information sharing area SSA in the own unit control apparatus is synchronously transferred when the program storage unit RPA receives the controller program shared by the communication of the other unit control apparatuses.
Further, the unit control device executes the virtual controller programs of other unit controllers according to the server instruction and the current controller state information, and the unit control device is used as the virtual redundancy controller of the appointed one or/and a plurality of unit control devices in a shared hot standby mode, or the unit control device sends the virtual controller programs to the appointed unit controller according to the server instruction and the state information of other unit controllers.
Further, the control method of the virtual redundant controller based on communication also comprises a data storage step and an authority setting step;
the data storage step comprises the following steps: the shared data server acquires and stores the controller program and the controller state information transmitted by the unit control device each time;
the permission setting step comprises the following steps: the method comprises the steps that a shared data server or a unit control device with a data management function controls the authority of each unit control device, and comprises the steps of limiting whether the certain unit control device can transmit data with other unit control devices, limiting the data transmission between the certain unit control device and other unit control devices in an active mode and/or a request sending mode, and limiting the transmission mode of controller state information between the certain unit control device and other unit control devices.
The invention has the beneficial effects that: the invention provides a control system and a method of a virtual redundant controller based on communication. The state monitoring unit and the program storage unit are used for reasonably configuring and managing a plurality of redundant controllers in the control system, the unit control devices of controller faults and high-load controllers can be reasonably avoided when the redundant controllers are distributed, and meanwhile, a better control system redundant controller allocation method is provided by defining a sending method of virtual control programs among the unit control devices, and the industrial production efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of the communication principle of the present invention.
Fig. 2 is a schematic diagram of the structural principle of the present invention.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
As shown in fig. 1, in the present embodiment, a control system of a communication-based virtual redundant controller includes a plurality of unit control apparatuses connected via a network, the unit control apparatuses including: a controller having a plurality of communication interfaces for performing communication sharing, and executing a service request received through the communication interfaces; the State monitoring unit is connected with the controller and comprises at least one State information sharing area SSA (Share State area) for sending the State monitoring information of the controller and at least one State information receiving area RSA (Receive State area) for receiving the State monitoring information of the controller; the state information sharing area SSA is used for storing controller state information which is output by the controller and is used for other unit control devices to communicate and share the unit control device; the state information receiving area RSA is used for storing the state information of the controller shared by the communication of other unit control devices; the program storage unit is connected with the controller and comprises at least one program sharing area SPA (Share ProduceRearea) for sending a virtual controller program and at least one program receiving area RPA (Receive ProduceRedo area) for receiving the virtual controller program, wherein the program sharing area SPA is used for storing the controller program for other unit control devices to communicate and share the virtual redundancy control device, and the program receiving area RPA for receiving the virtual controller program is used for storing the unit controller as the controller program of the virtual redundancy of other unit control devices.
The controllers adopt high-speed, universal and standard communication interfaces to support communication functions, all unit control devices in the whole distributed control system are connected together in a communication mode, and the functions of sharing controller programs and controller state information among all the controllers connected by a high-speed communication network are realized. This may be done by communication, such as by ethernet (but not limited to ethernet), when a unit control device requires the associated controller programs of other unit control devices.
Specifically, in the present embodiment, the communication between the program storage units of the plurality of unit control apparatuses employs active shared communication; the active sharing communication comprises that the unit control device transmits the relevant controller program in the program sharing area SPA to the program receiving area RPA of other unit control devices in an active mode, or actively receives the controller program sent by other unit control devices and stores the controller program in the program receiving area RPA.
Specifically, in another embodiment, the communication between the program storage units of the plurality of unit control apparatuses employs request sharing communication; the request sharing communication includes that the unit control device transmits the controller program in the self program sharing area SPA to the unit control device sending the request after receiving the request of other unit control devices, the unit control device sending the request stores the obtained controller program in the self program sharing area SPA, or receives the controller program sent by other unit control devices after sending the virtual controller program sharing request to other unit control devices, and stores the controller program in the program receiving area RPA.
Specifically, in the present embodiment, the communication between the state monitoring units of the plurality of unit control devices employs timing-sharing communication; the timing sharing communication comprises the step of sharing the controller state information of the state monitoring unit to the state information receiving area RSA of other state monitoring units through the state information sharing area SSA at the preset interval time point, or the step of receiving the controller state information of the state monitoring unit shared by the state information sharing area SSA of other state monitoring units through the state information receiving area RSA at the preset interval time point.
Specifically, in another embodiment, a synchronous communication mode of sharing synchronization with the controller program is adopted among the state monitoring units of the unit control devices, when the program storage unit SPA transmits the controller program to other unit control devices, the state information receiving area RSA synchronously receives the controller state information shared by other unit control devices, or when the program storage unit RPA receives the controller program shared by other unit control devices, the state information shared area SSA in the unit control devices synchronously transmits the controller state information shared by the state information sharing area SSA in the unit control devices.
As shown in fig. 2, further, the control system of the virtual redundant controller based on communication further includes a redundant virtual controller sharing server communicating with the unit control devices, the unit control devices execute the virtual controller programs of other unit controllers according to the server instructions and the current controller state information, and use the virtual redundant controller as the virtual redundant controller of the designated unit control device or/and a plurality of unit control devices in a sharing hot standby mode, or the unit control devices send the virtual controller programs to the designated unit controller according to the server instructions and the state information of other unit controllers.
Specifically, the controller status information read by the status monitoring unit includes, but is not limited to, controller idle, controller failure, and controller high load; when the controller state of a unit control device is a controller fault, when a command for executing a controller program is received, sending fault state information of the controller and information that the controller program is not executed to a controller program side, and uploading the fault state information to a shared server for recording and storing; when the controller state of a unit control device is controller high load, when a command for executing a controller program is received, high load state information of the controller and information that the controller program is not executed are sent to a controller program side, and the unit control device of the sending side sends the controller program which is not executed to controllers of other unit control devices after receiving the high load state information; when the controller state of a unit control device is controller idle, when a command for executing a controller program is received, the controller program is executed and information that the controller program has been executed is sent to a sender.
Further, the control system of the virtual redundant controller based on communication, the shared server is used for managing and saving the virtual controller program and the control state information transmitted by the unit control device; meanwhile, the authority of each unit control device is controlled, including whether a certain unit control device can transmit the controller program with other unit control devices or not is limited; limiting the transmission of a certain unit control device and other unit control devices for the virtual redundancy controller program in an active mode and/or a request sending mode; and limiting the transmission mode of the controller state information between a certain unit control device and other unit control devices.
The unit control devices in this embodiment are connected to a high-speed network by high-speed communication, and when a certain unit control device needs another unit control device to execute a controller program, the unit control device can be implemented by communication, such as ethernet (but not limited to ethernet). The current controller has a strong network communication interface, supports a high-speed communication function and a function of data exchange with different controllers, and realizes exchange, sharing and utilization of a controller program and controller state information among different unit control devices through communication. (in another embodiment, it may be connected in a low speed network).
A control method of a control system of a virtual redundant controller based on communication comprises a controller program acquisition step, a controller program sharing step, a controller state information acquisition step and a controller state information sharing step;
the controller program acquiring step comprises:
s11: each unit control device receives the acquired controller program;
s12: the controller saves the controller program in step S11 to the program receiving area RPA of the program storage unit;
the controller program sharing step comprises the following steps:
s21: the controller saves a controller program to be shared to a program sharing area SPA of the program storage unit;
s22: the respective unit control devices share the controller program of the program sharing area SPA in step S21;
the controller state information acquiring step includes:
s31: each unit control device receives the acquired controller state information respectively;
s32: the controller stores the controller state information in the step S31 to the state information receiving area RSA of the state monitoring unit;
the controller state information sharing step includes:
s41: the controller stores the controller state information to be shared to a state information sharing area SSA of the state monitoring unit;
s42: the respective unit control devices share the controller status information of the status information sharing area SSA in step S31.
A plurality of unit control devices in a control system reasonably configure and manage a plurality of redundant controllers in the control system through a state monitoring unit and a program storage unit, controller faults and unit control devices of high-load controllers can be reasonably avoided when the redundant controllers are distributed, and meanwhile, a better control system redundant controller allocation method is provided by defining a sending method of a virtual control program between the unit control devices, so that the industrial production efficiency is improved.
In this embodiment, the controller program acquisition and the control program sharing are active shared communications.
The actively shared communication includes:
(1) the unit control device transmits the relevant controller program in the program sharing area SPA to the program receiving area RPA of other unit control devices in an active mode;
(2) actively receiving a controller program sent by a control device of other units, and storing the controller program in a program receiving area RPA;
in another embodiment, the controller program acquisition and control program sharing is a request sharing communication.
The requesting a shared communication comprises:
(1) after receiving the requests of other unit control devices, the unit control device transmits the controller programs in the program sharing area SPA to the unit control device sending the requests, and the unit control device sending the requests stores the obtained controller programs in the program sharing area SPA;
(2) after a virtual controller program sharing request is sent to other unit control devices, the controller programs sent from the other unit control devices are received and stored in a program receiving area RPA.
In this embodiment, the controller state information acquisition and the controller state information are in timing sharing communication.
The timing sharing communication includes:
(1) the timing shared communication comprises sharing the controller state information of the state monitoring unit to the state information receiving area RSA of other state monitoring units through the state information sharing area SSA at a preset interval time point;
(2) receiving controller state information of state monitoring units shared by state information sharing areas SSA of other state monitoring units through state information receiving areas RSA at preset interval time points;
in another embodiment, the controller state information acquisition and controller state information is a synchronous shared communication;
the synchronous shared communication includes:
(1) when the program storage unit SPA transmits the controller program to other unit control devices, the state information receiving area RSA synchronously receives the controller state information shared by other unit control devices;
(2) the controller state information shared by the state information sharing area SSA in the own unit control apparatus is synchronously transferred when the program storage unit RPA receives the controller program shared by the communication of the other unit control apparatuses.
In the embodiment, the unit control device executes the virtual controller programs of other unit controllers according to the server instruction and the current controller state information, and the unit control device is used as the virtual redundant controller of the appointed one or/and a plurality of unit control devices in a shared hot standby mode, or the unit control device sends the virtual controller programs to the appointed unit controller according to the server instruction and the state information of other unit controllers.
In this embodiment, a method for controlling a virtual redundant controller based on communication further includes a data storage step and an authority setting step;
the data storage step comprises the following steps: the shared data server acquires and stores the controller program and the controller state information transmitted by the unit control device each time;
the permission setting step comprises the following steps: the method comprises the steps that a shared data server or a unit control device with a data management function controls the authority of each unit control device, and comprises the steps of limiting whether the certain unit control device can transmit data with other unit control devices, limiting the data transmission between the certain unit control device and other unit control devices in an active mode and/or a request sending mode, and limiting the transmission mode of controller state information between the certain unit control device and other unit control devices.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (12)
1. A control system of a communication-based virtual redundant controller including a plurality of unit control apparatuses connected through a network, characterized in that the unit control apparatuses include:
a controller having a plurality of communication interfaces for performing communication sharing, and executing a service request received through the communication interfaces;
the state monitoring unit is connected with the controller and comprises at least one state information sharing area SSA for sending the state monitoring information of the controller and at least one state information receiving area RSA for receiving the state monitoring information of the controller; the state information sharing area SSA is used for storing controller state information which is output by the controller and is used for other unit control devices to communicate and share the unit control device; the state information receiving area RSA is used for storing the state information of the controller shared by the communication of other unit control devices;
the program storage unit is connected with the controller and comprises at least one program sharing area SPA for sending the virtual controller program and at least one program receiving area RPA for receiving the virtual controller program, the program sharing area SPA is used for storing the controller program for other unit control devices to communicate and share the virtual redundancy unit control device, and the program receiving area RPA for receiving the virtual controller program is used for storing the unit controller as the controller program of the virtual redundancy of other unit control devices.
2. The control system of a virtual redundant controller based on communication according to claim 1, wherein the communication between the program storage units of the plurality of unit control devices employs active shared communication; the active sharing communication comprises that the unit control device transmits the relevant controller program in the program sharing area SPA to the program receiving area RPA of other unit control devices in an active mode, or actively receives the controller program sent by other unit control devices and stores the controller program in the program receiving area RPA.
3. A control system of a communication-based virtual redundant controller according to claim 1, wherein the communication between the program storage units of the plurality of unit control devices employs request sharing communication; the request sharing communication includes that the unit control device transmits the controller program in the self program sharing area SPA to the unit control device sending the request after receiving the request of other unit control devices, the unit control device sending the request stores the obtained controller program in the self program sharing area SPA, or receives the controller program sent by other unit control devices after sending the virtual controller program sharing request to other unit control devices, and stores the controller program in the program receiving area RPA.
4. The control system of a virtual redundant controller based on communication according to claim 1, wherein the communication between the status monitoring units of the plurality of unit control devices employs a timing sharing communication; the timing sharing communication comprises the step of sharing the controller state information of the state monitoring unit to the state information receiving area RSA of other state monitoring units through the state information sharing area SSA at the preset interval time point, or the step of receiving the controller state information of the state monitoring unit shared by the state information sharing area SSA of other state monitoring units through the state information receiving area RSA at the preset interval time point.
5. The system according to claim 1, wherein the state monitoring units of the plurality of unit controllers use a synchronous communication method in synchronization with the sharing of the controller program, and the state information receiving area RSA synchronously receives the controller state information shared by the other unit controllers when the program storage unit SPA transmits the controller program to the other unit controllers, or synchronously transmits the controller state information shared by the state information sharing area SSA in the unit controller when the program storage unit RPA receives the controller program shared by the communication of the other unit controllers.
6. The system of claim 1, further comprising a redundant virtual controller sharing server in communication with the unit control devices, wherein the unit control devices execute the virtual controller programs of other unit controllers according to the server commands and the current controller status information, and serve as the virtual redundant controller for designating one or more unit control devices in a sharing hot standby mode, or send the virtual controller programs to the designated unit controller according to the server commands and the status information of other unit controllers.
7. The control system of a communication-based virtual redundant controller according to claim 1, wherein the shared server is configured to manage and store the virtual controller program and control state information transmitted by the unit control devices; meanwhile, the authority of each unit control device is controlled, including whether a certain unit control device can transmit the controller program with other unit control devices or not is limited; limiting the transmission of a certain unit control device and other unit control devices for the virtual redundancy controller program in an active mode and/or a request sending mode; and limiting the transmission mode of the controller state information between a certain unit control device and other unit control devices.
8. The control method of a control system of a virtual redundant controller based on communication according to any one of claims 1 to 7, comprising a controller program acquisition step, a controller program sharing step, a controller state information acquisition step, and a controller state information sharing step;
the controller program acquiring step comprises:
s11: each unit control device receives the acquired controller program;
s12: the controller saves the controller program in step S11 to the program receiving area RPA of the program storage unit;
the controller program sharing step comprises the following steps:
s21: the controller saves a controller program to be shared to a program sharing area SPA of the program storage unit;
s22: the respective unit control devices share the controller program of the program sharing area SPA in step S21;
the controller state information acquiring step includes:
s31: each unit control device receives the acquired controller state information respectively;
s32: the controller stores the controller state information in the step S31 to the state information receiving area RSA of the state monitoring unit;
the controller state information sharing step includes:
s41: the controller stores the controller state information to be shared to a state information sharing area SSA of the state monitoring unit;
s42: the respective unit control devices share the controller status information of the status information sharing area SSA in step S31.
9. The method as claimed in claim 8, wherein the controller program acquisition and control program sharing includes two communication methods of active sharing communication and request sharing communication;
the actively shared communication includes:
the unit control device transmits the relevant controller program in the program sharing area SPA to the program receiving area RPA of other unit control devices in an active mode;
actively receiving a controller program sent by a control device of other units, and storing the controller program in a program receiving area RPA;
the requesting a shared communication comprises:
after receiving the requests of other unit control devices, the unit control device transmits the controller programs in the program sharing area SPA to the unit control device sending the requests, and the unit control device sending the requests stores the obtained controller programs in the program sharing area SPA;
after a virtual controller program sharing request is sent to other unit control devices, the controller programs sent from the other unit control devices are received and stored in a program receiving area RPA.
10. The method as claimed in claim 8, wherein the controller status information acquisition and controller status information includes two communication methods of timing sharing communication and synchronous sharing communication;
the timing sharing communication includes:
the timing shared communication comprises sharing the controller state information of the state monitoring unit to the state information receiving area RSA of other state monitoring units through the state information sharing area SSA at a preset interval time point;
receiving controller state information of state monitoring units shared by state information sharing areas SSA of other state monitoring units through state information receiving areas RSA at preset interval time points;
the synchronous shared communication includes:
when the program storage unit SPA transmits the controller program to other unit control devices, the state information receiving area RSA synchronously receives the controller state information shared by other unit control devices;
the controller state information shared by the state information sharing area SSA in the own unit control apparatus is synchronously transferred when the program storage unit RPA receives the controller program shared by the communication of the other unit control apparatuses.
11. The method of claim 8, wherein the cell controllers execute the virtual controller programs of other cell controllers according to the server command and the current controller status information to share the hot standby mode as the virtual redundant controller of the designated cell controller or/and a plurality of cell controllers, or the cell controllers transmit the virtual controller programs to the designated cell controllers according to the server command and the status information of other cell controllers.
12. The method of claim 8, further comprising a data storage step and a rights setting step;
the data storage step comprises the following steps: the shared data server acquires and stores the controller program and the controller state information transmitted by the unit control device each time;
the permission setting step comprises the following steps: the method comprises the steps that a shared data server or a unit control device with a data management function controls the authority of each unit control device, and comprises the steps of limiting whether the certain unit control device can transmit data with other unit control devices, limiting the data transmission between the certain unit control device and other unit control devices in an active mode and/or a request sending mode, and limiting the transmission mode of controller state information between the certain unit control device and other unit control devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010259081.2A CN111273541B (en) | 2020-04-03 | 2020-04-03 | Control system and method of virtual redundant controller based on communication |
Applications Claiming Priority (1)
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| CN202010259081.2A CN111273541B (en) | 2020-04-03 | 2020-04-03 | Control system and method of virtual redundant controller based on communication |
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| Publication Number | Publication Date |
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| CN111273541A true CN111273541A (en) | 2020-06-12 |
| CN111273541B CN111273541B (en) | 2023-05-02 |
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