CN110531678B - Automatic control system and operation and maintenance method thereof - Google Patents
Automatic control system and operation and maintenance method thereof Download PDFInfo
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- CN110531678B CN110531678B CN201910872010.7A CN201910872010A CN110531678B CN 110531678 B CN110531678 B CN 110531678B CN 201910872010 A CN201910872010 A CN 201910872010A CN 110531678 B CN110531678 B CN 110531678B
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- 238000012423 maintenance Methods 0.000 title claims abstract description 25
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- 241001522296 Erithacus rubecula Species 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
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- 238000011084 recovery Methods 0.000 description 2
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention discloses an operation and maintenance method of an automatic control system, wherein the automatic control system comprises the following steps: the system comprises an upper computer and at least two controllers, wherein the upper computer is connected with all the controllers through a server, and each controller independently manages subordinate equipment of the controller. The operation and maintenance method comprises the following steps: the server judges whether a failure controller which abnormally operates exists or not, if so, a standby controller which takes over the failure controller is searched from the normally operating controllers, and the standby controller simultaneously manages subordinate equipment of the standby controller and the subordinate equipment of the failure controller. The server automatically searches for the standby controller which takes over the failure controller, the standby controller simultaneously acts as the two controllers, the controllers of the automatic control system are reasonably utilized, the number of the controllers is reduced, and the system has good stability, usability and fault tolerance.
Description
Technical Field
The invention relates to the technical field of automatic control systems, in particular to an automatic control system and an operation and maintenance method thereof.
Background
With the continuous development of the internet of things technology and the demand of catering to the market, building automatic control systems are gradually developed in the mainstream directions of distribution, edge calculation and the like.
In the existing building automatic control system based on distributed edge calculation, an edge control core network controller bears operation logic for controlling and managing subordinate equipment, although the reliability of the controller is stable and the failure rate is low, the possibility of failure still exists, or other external unavoidable factors such as power failure, network failure and the like can cause the abnormal operation of the controller, when one controller is abnormal, the monitoring and management means of the controller on the subordinate management equipment is failed, and the field equipment cannot normally operate. In the prior art, when the controller runs abnormally, the problem needs to be manually checked or the controller needs to be replaced, and after a large amount of time is consumed, the normal operation of the building equipment can be recovered, so that the development of normal work in the building is greatly influenced.
Therefore, how to design an autonomous system and an operation and maintenance method thereof capable of effectively coping with the abnormal situation is a technical problem to be solved in the industry.
Disclosure of Invention
The invention provides an automatic control system capable of automatically operating and maintaining and an operation and maintenance method thereof, aiming at solving the defects of long recovery time and low efficiency after the automatic control system is abnormal in the prior art.
The technical scheme adopted by the invention is that an operation and maintenance method of an automatic control system is designed, and the automatic control system comprises: the system comprises an upper computer and at least two controllers, wherein the upper computer is connected with all the controllers through a server, and each controller independently manages subordinate equipment of the controller. The operation and maintenance method comprises the following steps: and the server judges whether the failure controller which abnormally operates exists or not, and if so, the server searches for a standby controller which takes over the failure controller from the normally operating controllers.
Preferably, the standby controller manages its subordinate devices and the failed controller subordinate devices simultaneously.
Preferably, each controller is provided with a main memory and a standby memory, and subordinate equipment information and an operation logic script of the controller where the controller is located are stored in the main memory; and the controller manages the subordinate equipment according to the subordinate equipment information and the running logic script stored in the main memory.
Preferably, the subordinate device information includes: device name, IP address, point location address, and point location type.
Preferably, each controller is provided with a corresponding unique identification code, and the controller binds the identification code with subordinate device information and an operating logic script stored in the main memory and then sends the binding code to the server for backup.
Preferably, after searching for a standby controller which takes over the failed controller from the normally operating controllers, the server sends the subordinate device information and the operating logic script of the failed controller to a standby memory of the standby controller for storage; and the standby controller manages the subordinate equipment of the failure controller according to the subordinate equipment information and the running logic script stored in the standby memory.
Preferably, the operation and maintenance method further comprises: and after the failure controller recovers the normal operation, emptying the standby memory of the standby controller.
Preferably, each controller sends heartbeat signals to the server at preset time intervals and uploads real-time data information of subordinate equipment of the server; the failure controller for judging whether abnormal operation exists by the server comprises the following steps: the server receives heartbeat signals sent by all the controllers, and if the heartbeat signals of one controller are not received after the preset time, the controller is judged to be a failure controller.
Preferably, the step of the server searching for a standby controller to take over the failed controller from the normally operating controllers comprises: and compiling a round-robin sequence in advance according to the identification codes of the controllers, and after judging that the failure controller which operates abnormally exists, the server searches for the standby controller from the controller positioned next to the failure controller according to the round-robin sequence.
Preferably, each controller is provided with a corresponding numerical identification code, and the round robin order is from small to large or from large to small.
Preferably, the step of the server searching for a standby controller to take over the failed controller from the normally operating controllers comprises: the server detects the data size of each controller which normally operates, and searches for the standby controller from the controller with the smallest data size.
Preferably, the server, the controller and the subordinate devices of the autonomous system all communicate in the same local area network.
The invention also provides an automatic control system which adopts the operation and maintenance method of the automatic control system to automatically operate and maintain.
Compared with the prior art, the invention has the following advantages:
1. when the failure controller exists in the automatic control system, the server automatically searches for the standby controller which takes over the failure controller, so that the stability, the availability and the high fault tolerance of the system are improved;
2. the system fault mechanism is quickly judged and responded, so that the consumption of human resources and time resources is greatly reduced, and the system recovery efficiency is improved;
3. the standby controllers are searched in the existing controllers which normally run, the standby controllers simultaneously play the roles of the two controllers, the controllers of the automatic control system are reasonably utilized, no additional standby controller is required to be configured for each controller, the number of the controllers of the automatic control system is simplified, the cost is low, and the automatic control system is easy to popularize and use.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a schematic diagram of an autonomous system according to the present invention;
FIG. 2 is a flow chart of the operation and maintenance method of the present invention.
Detailed Description
As shown in FIG. 1, the operation and maintenance method provided by the invention is suitable for an automatic control system, especially for a distributed building automatic control system. The automatic control system comprises: the system comprises an upper computer, a server, at least two controllers and a plurality of field devices, wherein the upper computer is connected with all the controllers through the server, the controllers adopt network controllers, and the server, the controllers and the field devices are all in the same local area network and communicate in a TCP communication mode. Each of which is responsible for managing a portion of the field devices. More specifically, all field devices in the autonomous system are divided into a plurality of groups, each group of field devices is managed by one controller, the overall interactive operation logic of the group of field devices operates in the corresponding controller, the field devices managed by the controller are all subordinate devices of the controller, and each controller independently manages the corresponding subordinate device.
As shown in fig. 2, the operation and maintenance method includes the following steps: the server judges whether a failure controller which abnormally operates exists or not, if so, a standby controller which takes over the failure controller is searched from the normally operating controllers, and the standby controller simultaneously manages the corresponding subordinate equipment and the subordinate equipment corresponding to the failure controller.
In a preferred embodiment, each controller is provided with a main memory and a spare memory, the main memory stores subordinate device information and a running logic script corresponding to the controller where the controller is located, and the subordinate device information includes: the device name, the IP address, the point location address, and the point location type, where the point location address may be a physical location of the subordinate device, such as a building, a floor, a room number, where the subordinate device is located, and the point location type may be a working type of the subordinate device, such as temperature detection, humidity detection, and a lighting state, which are described above only by way of example and are not intended to limit the present invention, and the point location address and the point location type in the information of the subordinate device may be set according to an actual situation. When the automatic control system is initially installed, the subordinate device information and the operation logic script corresponding to each controller are manually stored in the main memory of the automatic control system, and the controllers manage the subordinate devices according to the subordinate device information and the operation logic script stored in the main memory. Furthermore, each controller is provided with a corresponding unique identification code, and the controller binds the identification code with subordinate device information and an operation logic script stored in the main memory and then sends the binding code to the server for backup.
When the whole automatic control system operates normally, each controller sends heartbeat signals to the server at intervals of preset time and uploads real-time data information of corresponding subordinate equipment, and when the automatic control system is abnormal, at least one controller stops sending the heartbeat signals to the server. The server judges whether a failure controller which runs abnormally exists or not through the heartbeat signal, and the specific judgment mode is as follows: the server receives heartbeat signals sent by all the controllers, and if the heartbeat signals of one controller are not received after the preset time, the controller is judged to be a failure controller.
As shown in fig. 2, the operation and maintenance method further includes: the server searches for a standby controller which replaces the failure controller from the normally operating controller, then sends the subordinate device information and the operation logic script of the failure controller to a standby memory of the standby controller for storage, the standby controller manages the subordinate device of the failure controller according to the subordinate device information and the operation logic script stored in the standby memory, at the moment, operation and maintenance personnel can check, maintain or replace the failure controller under the condition that the normal operation of the automatic control system is ensured, and the standby memory of the standby controller is emptied after the failure controller recovers to normally operate. Of course, the inspection and maintenance of the failed controller include two cases, the first is that the failed controller is not damaged, and the failed controller is restored to normal operation through maintenance; the second is that the failure controller is damaged, the failure controller is removed from the automatic control system, a new controller is adopted to replace the failure controller to access the automatic control system, all information of the failure controller is stored in the new controller in the same way, all information of the failure controller comprises an identification code, subordinate equipment information, an operation logic script and the like, and the normal operation of the failure controller is recovered.
There are various methods for the server to find the standby controller, and the following two methods are described as examples:
the first method is that the server pre-compiles a round-robin sequence according to the identification code of the controller, after the server judges that the failure controller which abnormally operates exists, the round-robin sequence is pre-compiled according to the identification code of the controller, and after the server judges that the failure controller which abnormally operates exists, the server searches for the standby controller from the controller which is positioned next to the failure controller according to the round-robin sequence. In a preferred embodiment, each controller is provided with a corresponding digital identification code, the round-robin sequence is from small to large or from large to small, taking the round-robin sequence as an example from small to large, assuming that the controller No. 1 is a failed controller, the controller No. 2 starts to find the standby controller, for example, whether the standby memory of the controller No. 2 is empty is judged, if yes, the controller No. 2 is taken as the standby controller, if not, the controller No. 2 is occupied, whether the standby memory of the controller No. 3 is empty is judged, and the same logic is used until the controller with the empty standby memory is found as the standby controller.
The second method is that the server detects the data size of each controller in normal operation, and starts to find the standby controller that takes over the failed controller from the controller with the smallest data size, for example, it is determined whether the standby memory of the controller with the smallest data size is empty, if so, the controller with the smallest data size is used as the standby controller, if not, the controller with the smallest data size is occupied, it is determined whether the standby memory of the controller with the second last number of data size is empty, and the same logic is followed until the controller with the empty standby memory is found as the standby controller.
It should be noted that, if more than two controllers in the autonomous system operate abnormally, the standby controllers of the failed controllers are sequentially searched according to the time sequence of the abnormal operation of the controllers found by the server. Furthermore, a priority order is pre-programmed according to the identification codes of the controllers, and if the server finds that the abnormal operation time of the controllers is the same, the standby controllers of the failed controllers are sequentially searched according to the priority order.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The operation and maintenance method of the automatic control system comprises the following steps: the system comprises an upper computer and at least two controllers, wherein the upper computer is connected with all the controllers through a server, and each controller independently manages subordinate equipment of the controller;
the operation and maintenance method is characterized by comprising the following steps: the server judges whether a failure controller which operates abnormally exists or not, and if yes, a standby controller which takes over the failure controller is searched from controllers which operate normally;
each controller is provided with a main memory and a standby memory, subordinate equipment information and an operation logic script of the controller where the controller is located are stored in the main memory, and the controller manages the subordinate equipment according to the subordinate equipment information and the operation logic script stored in the main memory;
each controller is provided with a corresponding unique identification code, and the controller binds the identification code with subordinate equipment information and an operation logic script stored in the main memory and then sends the binding code to the server for backup;
after the server searches for a standby controller which takes over the failure controller from the normally operating controllers, the server sends subordinate device information and the operating logic script of the failure controller to a standby memory of the standby controller for storage;
and the standby controller manages the subordinate equipment of the failure controller according to the subordinate equipment information and the running logic script stored in the standby memory.
2. The operation and maintenance method of the autonomous system of claim 1 wherein the subordinate device information comprises: device name, IP address, point location address, and point location type.
3. The operation and maintenance method of the autonomous system of claim 1 further comprising: and after the failure controller recovers the normal operation, emptying the standby memory of the standby controller.
4. The operation and maintenance method of the autonomous system of claim 1 wherein each of the controllers transmits a heartbeat signal to the server at a predetermined interval and uploads real-time data information of its subordinate devices;
the failure controller for the server to judge whether abnormal operation exists comprises the following steps: and the server receives all heartbeat signals sent by the controllers, and if the heartbeat signals of a certain controller are not received after the preset time is exceeded, the controller is judged to be a failure controller.
5. The operation and maintenance method of the autonomous system as claimed in any one of claims 1 to 4, wherein the server searching for a backup controller to take over the failed controller from the normally operating controllers comprises: and compiling a round-robin sequence in advance according to the identification codes of the controllers, and after judging that the failed controller which operates abnormally exists, the server searches for the standby controller from the controller positioned next to the failed controller according to the round-robin sequence.
6. The method of claim 5, wherein each controller is provided with a corresponding numeric identifier code, and the round robin order is from small to large or from large to small.
7. The operation and maintenance method of the autonomous system as claimed in any one of claims 1 to 4, wherein the server searching for a backup controller to take over the failed controller from the normally operating controllers comprises: and the server detects the data volume of each controller which normally runs and searches for the standby controller from the controller with the minimum data volume.
8. The method of claim 1, wherein the servers, controllers and subordinate devices of the autonomous system are all in communication within a same LAN.
9. An autonomous system, characterized in that it is automatically operated by the method of operation of an autonomous system according to any of claims 1 to 8.
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