CN110531666B - Autonomous system, autonomous system topology structure and generation method - Google Patents
Autonomous system, autonomous system topology structure and generation method Download PDFInfo
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Abstract
The invention discloses an automatic control system, an automatic control system topological structure and a generating method, wherein the automatic control system topological structure comprises the following components: the node group comprises a plurality of node layers which are connected layer by layer, and each node in the node group is connected to the main control equipment through a unique communication path; each node is provided with a unique label, the label comprises a name label and a home label of the node, and the home label comprises the label of the node positioned at the upper layer of the communication path of the node; the node searches all nodes which are matched with the label and are positioned at the lower layer of the node to generate a local topological structure. The invention reduces the operation debugging difficulty after the construction of the automatic control system is finished, improves the working efficiency, can quickly locate a fault node when a certain node of the system fails, and improves the maintenance efficiency.
Description
Technical Field
The invention relates to the technical field of automatic control systems, in particular to an automatic control system, an automatic control system topological structure and a generation method.
Background
With the development of the internet of things technology, the interconnection of everything becomes a key for breaking through the intelligent automatic management of large-scale building field equipment. In a large building, the number of field devices is huge, the number of monitoring points is large, the monitoring points are hundreds of monitoring points which are small to the home environment and are large to tens of thousands or even hundreds of thousands of monitoring points of a public building.
Therefore, how to design an automatic control system topology structure and a generation method capable of reducing the building operation debugging difficulty is an urgent technical problem to be solved in the industry.
Disclosure of Invention
The invention provides an automatic control system, an automatic control system topological structure and a generation method, aiming at solving the defects of high debugging difficulty and high maintenance difficulty of the existing automatic control system which is operated and debugged manually.
The technical scheme adopted by the invention is that an automatic control system topological structure is designed, which comprises the following steps: the node group comprises a plurality of node layers which are connected layer by layer, and each node in the node group is connected to the main control equipment through a unique communication path; each node is provided with a unique label, the label comprises a name label and a home label of the node, and the home label comprises the label of the node positioned at the upper layer of the communication path of the node; the node searches all nodes which are matched with the label and are positioned at the lower layer of the node to generate a local topological structure.
Preferably, the topmost node in the node group is connected to the master control device, and the master control device constructs a global topology structure according to the local topology structure of the topmost node in the node group.
Preferably, the node group includes: the device comprises a middle control layer, a device control layer and a device node layer which are connected layer by layer, wherein the middle control layer is positioned at the topmost layer of a node group.
Preferably, the middle control layer comprises a plurality of controllers connected with the master control device in parallel.
Preferably, the controller is a DDC controller.
The invention also provides an automatic control system which comprises the automatic control system topological structure.
The invention also provides a method for generating the topological structure of the automatic control system, which comprises the following steps of:
step 1.1, acquiring nodes in each node layer and corresponding labels thereof, and storing the nodes and the corresponding labels in a node container of the layer;
step 1.2, selecting a control node from a certain node container, wherein the control node is used as an initial node;
step 1.3, judging whether the initial node has a next-layer node container, if so, executing label matching action on the next-layer node container of the initial node, otherwise, executing step 5;
step 1.4, after the label matching action is executed, successively taking the successfully matched nodes in the node container at the next layer of the initial nodes as new initial nodes, and repeating the step 3;
and step 1.5, generating a local topological structure of the control node according to the pairing result.
Preferably, the generation method further includes a global topology generation step:
step 2.1, acquiring nodes in each node layer and corresponding labels thereof, and storing the nodes and the corresponding labels in the node container of the layer;
2.2, sequentially selecting initial nodes from the topmost node container, judging whether the initial nodes are selected, if not, performing the step 2.3, and if so, performing the step 2.5;
step 2.3, judging whether the initial node has a next-layer node container, if so, executing label matching action by the next-layer node container of the initial node, and performing step 2.4, otherwise, returning to step 2.2;
step 2.4, after the label matching action is executed, storing successfully matched nodes in the node container at the next layer of the initial node in the matching container corresponding to the current initial node, and returning to the step 2.2;
2.5, sequentially selecting new initial nodes from each pairing container, judging whether the initial nodes are selected, if not, performing the step 2.6, and if so, performing the step 2.8;
step 2.6, judging whether the initial node has a next-layer node container, if so, executing label matching action by the next-layer node container of the initial node, and performing step 2.7, otherwise, returning to step 2.5;
step 2.7, after the label matching action is executed, storing successfully matched nodes in the node container at the next layer of the initial node in the matching container corresponding to the current initial node, and returning to the step 2.5;
and 2.8, generating a global topological structure by the master control equipment according to the topological relation between the pairing container and the topmost node container.
Preferably, the tag pairing action comprises: and searching all nodes in the container to be paired by taking the label of the initial node as a target label and taking a node container at the next layer of the initial node as the container to be paired, wherein if the label of the node has the target label, the node is successfully paired.
Preferably, when all nodes in the container to be paired are searched, whether target tags exist in tags of the nodes is judged one by one, and when all nodes in the container to be paired are judged, the tag pairing action is executed.
Compared with the prior art, each node in the topological structure is marked with a corresponding unique label, the labels of the nodes on the lower layer comprise the labels of the nodes on the upper layer, the nodes with the control function can find all the nodes which are matched with the labels and are positioned on the lower layer, the local topological structures are automatically generated, the master control equipment automatically generates the global topological structure according to the local topological structure of the node on the topmost layer in the node group, a field engineer or a system maintenance personnel can obtain the corresponding topological structures through each node or the master control equipment, the operation debugging difficulty after the construction of the automatic control system is reduced, the working efficiency is improved, the local topological structures and the global topological structures can be visually presented during later maintenance, the later maintenance difficulty of the automatic control system is reduced, when a certain node of the system breaks down, the failed node can be quickly positioned, and the maintenance efficiency is improved.
Drawings
The invention is described in detail below with reference to examples and figures, in which:
FIG. 1 is a schematic illustration of node tagging in the present invention;
FIG. 2 is a schematic view of a topology of a building automation system of the present invention;
FIG. 3 is a schematic diagram of the location of a node failure in the present invention;
fig. 4 is a schematic diagram of a generation flow of the global topology in the present invention.
Detailed Description
The topological structure of the automatic control system provided by the invention is automatically generated by depending on the unique label relationship among the nodes, the topological structure of the automatic control system comprises a main control device and a node group, the node group comprises a plurality of node layers which are connected layer by layer from top to bottom, each node in the node group is connected to the main control device through a unique communication path, the uppermost node in the node group is directly connected with the main control device, each node is provided with a unique label, namely the label is used as the identification code of the node, the label comprises a name label and an attribution label of the node, the attribution label comprises the label of the node positioned on the upper layer in the communication path of the node, the hierarchical relationship among the nodes is determined by the attribution label in the label, and the nodes on the same layer are distinguished by the name label in the label.
The label of each node is manually set, after all the labels are set, the node searches all the nodes which are matched with the label and are positioned at the lower layer of the node, and after all the nodes are found, a local topological structure is automatically generated according to the hierarchical relation of the node labels. It should be noted that, a node at the lowest layer in a node group is a terminal action node, the terminal action node usually has no control function, a local topology structure is not generated in the terminal action node, any node at the upper layer of the terminal action node in the node group has a control function, for convenience of expression, an upper node with a control function is called a control node, the control node finds all nodes which are paired with a label of the control node and located at the lower layer of the control node to automatically generate the local topology structure, and the master control device constructs a global topology structure according to the local topology structure of the node at the highest layer in the node group, so that the operation debugging difficulty of the autonomous system is reduced, and the working efficiency is improved.
The above-mentioned "upper layer" and "lower layer" refer to an affiliation in a topology structure, nodes of the lower layer are managed by nodes located at an upper layer thereof, and the nodes of the lower layer transmit signals or data to the master control device through the nodes located at the upper layer thereof, and do not limit an actual physical location relationship between the nodes.
The topological structure of the invention is not limited by a hierarchical structure, only a unique label corresponding to each node is marked to form a unique identifier, thus realizing multilayer nested topological relation without limitation of hierarchy, and the number of lower-layer nodes connected with each control node can realize exact position relation topological structure as long as the lower-layer nodes are within the point position capacity supported by the control node. The types of nodes in the node group are not limited, and may include actual hardware devices such as various controllers, sensors, actuators, and the like, and soft nodes such as switch state nodes, temperature detection nodes, and the like. In actual use, on the premise that field debugging personnel are unfamiliar with the current system, the topological structure can be automatically generated by starting the built-in topological structure generation logic of the control node.
As shown in fig. 1 and 2, taking a common building automation system as an example, a node group includes: the device comprises a middle control layer, a device control layer and a device node layer which are connected layer by layer, wherein the middle control layer at the top layer in a node group is connected with a main control device, the middle control layer comprises a plurality of controllers which are connected with the main control device in parallel, the device control layer comprises a plurality of device control nodes, and the device node layer comprises a plurality of device nodes. The next layer of the controller may be a device control node, the device node is connected to the controller through the device control node, and the next layer of the controller may also be directly connected to the device node. And labeling the bound nodes in the actual controller programming stage, namely labeling the nodes in the equipment control layer and the nodes in the equipment node layer, and forming a global topology structure diagram by the main control equipment according to the electric appliance connection relation and data communication among the equipment nodes, the equipment control nodes, the controller and the main control equipment. During operation debugging or later maintenance, the computer can be connected with a debugging interface of the field main control equipment to obtain the global topology structure chart of the system, and certainly, in practical application, the computer can also be connected with the field main control equipment through other wireless transmission technologies to obtain the global topology structure chart of the system.
Specifically, as shown in fig. 1, which is a schematic diagram of labeling bound nodes in the programming phase of a controller, when a device control node is in data communication with the controller through a bus protocol, the device presents a plurality of device nodes on the controller, and then a unique label of the device must be labeled on each device node to determine the affiliation of the device node. As shown in fig. 2, the system is composed of an illumination subsystem and a cooling subsystem, which are respectively controlled by two DDC controllers, so the DDC controller tag controlling the illumination subsystem can be set, but not limited to, "lighting" and the DDC controller tag controlling the cooling subsystem can be set, but not limited to, "lighting".
The following description takes the illumination subsystem as an example:
there are two lighting controllers (i.e., device control nodes) under the lighting subsystem, which may be labeled "light 1" and "light 2", and there are two device nodes in the lighting controller that are switch controlled, switch state, and taking the first lighting controller as an example, the switch controller node label may be set to "light 1" + "control", and the switch state node label is set to "light 1" + "state", where "light 1" is the home label of the switch controller node that must be added and must be consistent with the label "light 1" of the first lighting controller to identify that the node belongs to the first lighting controller.
Fig. 2 is a diagram of a topology of a system field device generated after tagging according to fig. 1. Firstly, the main control equipment determines that the subordinate equipment of the main control equipment is provided with two DDC controllers according to the electrical connection relation, and according to the self-defined labels 'lighting' and 'cooling', a field engineer or a maintenance person can easily identify subsystems controlled by the main control equipment, namely an illumination subsystem and a cold source subsystem; next, the controller of the middle control layer determines its subordinate devices according to the electrical connection relationship, taking the lighting subsystem as an example, there are two device controllers under the DDC controller lighting, which are lighting controller light1 and lighting controller light2, respectively, because the lighting controller is in bus communication, a plurality of device control nodes are present in the controller, and since the home labels of the switch controller node and the switch state node include "light 1", the system can determine that the two device nodes belong to the first lighting controller light1, and so on, a topology structure diagram can be formed.
As shown in fig. 3, for determining whether a node in the autonomous system has a fault, the operating state of the field device can be monitored through a fault alarm function, a communication monitoring mechanism, a response mechanism and the like provided in the building field controller configuration programming software, and the monitoring is embodied in the field device topology structure diagram automatically generated by the system in real time, so that a field engineer or a later maintenance worker can conveniently obtain the operating condition and the device topology relationship of the whole system on the controller, and the debugging and overhauling efficiency is improved. The above-mentioned failure alarm mechanism generally sets the upper and lower thresholds of the node or sets the event triggering the alarm when binding the device node, and if the threshold range is exceeded or the alarm event occurs, the alarm is triggered. The communication monitoring and response mechanism is generally implemented by setting a response timeout, i.e. a previous node sends a request to a next node, and the next node must reply within a specified time, and if no reply is received within the specified time, the communication is considered to be failed.
The invention also provides a method for generating the topological structure of the automatic control system, which comprises the following steps of:
step 1.1, acquiring nodes in each node layer and corresponding labels thereof, storing the nodes in the node container of the layer, and performing step 1.2;
step 1.2, selecting a control node from a certain node container, taking the control node as an initial node, and performing step 1.3;
step 1.3, judging whether the initial node has a next layer node container, if not, executing step 1.5, if so, executing label matching action by the next layer node container of the initial node, wherein the label matching action comprises: taking the label of the initial node as a target label and a node container on the next layer of the initial node as a container to be paired, searching all nodes in the container to be paired, judging whether the labels of the nodes have the target label one by one when searching all the nodes in the container to be paired, if the labels of the nodes have the target label, the node is successfully paired, and when all the nodes in the container to be paired are judged, completing the execution of the label pairing action, and executing the step 1.4;
step 1.4, storing successfully paired nodes in the containers to be paired in the paired containers in the same layer, sequentially selecting the nodes from the paired containers as new initial nodes, and repeating the step 1.3;
and step 1.5, generating a local topological structure of the control node according to the pairing result.
The generation method also comprises a global topology generation step:
step 2.1, acquiring nodes in each node layer and corresponding labels thereof, and storing the nodes and the corresponding labels in the node container of the layer;
2.2, sequentially selecting initial nodes from the topmost node container, judging whether the initial nodes are selected, if not, performing the step 2.3, and if so, performing the step 2.5;
step 2.3, judging whether the initial node has a next-layer node container, if so, executing a label matching action on the next-layer node container of the initial node, wherein the label matching action is the same as that in the step 1.3, and performing the step 2.4, otherwise, returning to the step 2.2;
step 2.4, after the label matching action is executed, storing successfully matched nodes in the node container at the next layer of the initial node in the matching container corresponding to the current initial node, and returning to the step 2.2;
2.5, sequentially selecting new initial nodes from each pairing container, judging whether the initial nodes are selected, if not, performing the step 2.6, and if so, performing the step 2.8;
step 2.6, judging whether the initial node has a next-layer node container, if so, executing label matching action by the next-layer node container of the initial node, and performing step 2.7, otherwise, returning to step 2.5;
step 2.7, after the label matching action is executed, storing successfully matched nodes in the node container at the next layer of the initial node in the matching container corresponding to the current initial node, and returning to the step 2.5;
and 2.8, generating a global topological structure by the master control equipment according to the topological relation between the pairing container and the topmost node container.
As shown in fig. 4, taking the building automation system as an example, the node group includes: the device comprises a middle control layer, a device control layer and a device node layer which are connected layer by layer. In the preferred embodiment, the method for generating the global topology of the autonomous system is provided.
The method specifically comprises the following steps:
step 2.1, acquiring the controller and the label thereof existing in the middle control layer, and storing the controller and the label in a controller container; acquiring a device controller and a label thereof existing in a device control layer, and storing the device controller and the label in a non-attributive device container; acquiring equipment nodes and labels thereof existing in an equipment node layer, and storing the equipment nodes and labels thereof in a non-home node container; step 2.2 is carried out;
2.2, sequentially selecting initial nodes in the controller container, judging whether the initial nodes are selected, if not, performing the step 2.3, and if so, performing the step 2.5;
step 2.3, the label pairing action comprises: taking the label of the initial node as a target label and the non-attributive equipment container on the next layer of the initial node as a to-be-paired container, searching all nodes in the non-attributive equipment container, judging whether the labels of the nodes have the target label one by one when all the nodes in the non-attributive equipment container are searched, if the labels of the nodes have the target label, the nodes are successfully paired, and when all the nodes in the to-be-paired container are judged, the label pairing action is completed, and the step 2.4 is executed;
step 2.4, a plurality of controller equipment containers are arranged on the same layer of the equipment containers which are not affiliated, the number of the controller equipment containers is the same as that of control nodes in the controller containers, each initial node corresponds to one controller equipment container, the successfully paired nodes in the equipment containers which are not affiliated are placed in the controller equipment container corresponding to the current initial node, the nodes are sequentially selected from the controller equipment containers to serve as new initial nodes, and the step 2.2 is carried out;
step 2.5, sequentially selecting new initial nodes from each controller equipment container, judging whether the initial nodes are selected, if not, performing step 2.6, and if so, performing step 2.8;
step 2.6, judging whether the initial node has a next layer node container, if no, returning to the step 2.5, if so, executing label matching action by the next layer node container of the initial node, wherein the label matching action comprises: taking the label of the initial node as a target label and the non-attributive node container on the next layer of the initial node as a container to be paired, searching all nodes in the non-attributive node container, judging whether the label of the node has the target label one by one when searching all the nodes in the non-attributive node container, if the label of the node has the target label, the node is successfully paired, and when all the nodes in the non-attributive node container are judged, the label pairing action is finished, and the step 2.7 is executed;
step 2.7, arranging a plurality of equipment node containers on the same layer of the non-attributive node container, wherein the number of the equipment node containers is the same as the total number of the nodes in all the controller equipment containers, each initial node corresponds to one equipment node container at the moment, the successfully paired nodes in the non-attributive equipment containers are placed in the equipment node container corresponding to the current initial node, and returning to the step 2.5;
and 2.8, the master control equipment generates a global topological structure according to the topological relation among the controller container, the controller equipment container and the equipment node container.
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 (10)
1. An autonomous system topology comprising: the node group comprises a plurality of node layers which are connected layer by layer, and each node in the node group is connected to the main control equipment through a unique communication path;
each node is provided with a unique label, the label comprises a name label and a home label of the node, the home label comprises the label of the node positioned at the upper layer in the communication path of the node, the home label in the label is used for determining the hierarchical relationship between the nodes, and the name label in the label distinguishes the nodes at the same layer;
the node at the lowest layer in the node group is an end action node, any node at the upper layer of the end action node in the node group has a control function, the upper layer node with the control function is called a control node, and the control node searches all nodes which are matched with the control node and are positioned at the lower layer of the control node to automatically generate a local topological structure.
2. The autonomic system topology of claim 1, wherein a top-most node in the node group is connected to the master control device, and the master control device generates a global topology based on a local topology of the top-most node in the node group.
3. The autonomous system topology of claim 1, wherein the group of nodes comprises: the device comprises a middle control layer, a device control layer and a device node layer which are connected layer by layer, wherein the middle control layer is positioned at the topmost layer of the node group.
4. The autonomic topology of claim 3 wherein the intermediate control layer comprises a plurality of controllers connected in parallel to the host devices.
5. The autonomous system topology of claim 4, wherein the controller is a DDC controller.
6. An autonomous system, comprising: the autonomous system topology of any of claims 1 to 5.
7. The method for generating an autonomous system topology according to claim 1, comprising a local topology generating step of:
step 1.1, acquiring nodes in each node layer and corresponding labels thereof, and storing the nodes and the corresponding labels in a node container of the layer;
step 1.2, selecting a control node from a certain node container, wherein the control node is used as an initial node;
step 1.3, judging whether the initial node has a next-layer node container, if so, executing label matching action on the next-layer node container of the initial node, otherwise, executing step 1.5;
step 1.4, after the label matching action is executed, successively taking the successfully matched nodes in the node container at the next layer of the initial nodes as new initial nodes, and repeating the step 1.3;
and step 1.5, generating a local topological structure of the control node according to the pairing result.
8. The method for generating an autonomous system topology according to claim 7, comprising a global topology generating step of:
step 2.1, acquiring nodes in each node layer and corresponding labels thereof, and storing the nodes and the corresponding labels in the node container of the layer;
2.2, sequentially selecting initial nodes from the topmost node container, judging whether the initial nodes are selected, if not, performing the step 2.3, and if so, performing the step 2.5;
step 2.3, judging whether the initial node has a next-layer node container, if so, executing label matching action by the next-layer node container of the initial node, and performing step 2.4, otherwise, returning to step 2.2;
step 2.4, after the label matching action is executed, storing successfully matched nodes in the node container at the next layer of the initial node in the matching container corresponding to the current initial node, and returning to the step 2.2;
2.5, sequentially selecting new initial nodes from each pairing container, judging whether the initial nodes are selected, if not, performing the step 2.6, and if so, performing the step 2.8;
step 2.6, judging whether the initial node has a next-layer node container, if so, executing label matching action by the next-layer node container of the initial node, and performing step 2.7, otherwise, returning to step 2.5;
step 2.7, after the label matching action is executed, storing successfully matched nodes in the node container at the next layer of the initial node in the matching container corresponding to the current initial node, and returning to the step 2.5;
and 2.8, generating a global topological structure by the master control equipment according to the topological relation between the pairing container and the topmost node container.
9. The generation method of claim 7 or 8, wherein the tag pairing action comprises: and searching all nodes in the container to be paired by taking the label of the initial node as a target label and taking a node container at the next layer of the initial node as a container to be paired, wherein if the label of the node has the target label, the node is successfully paired.
10. The generation method of claim 9, wherein when searching all nodes in a container to be paired, it is determined one by one whether the target tag exists in the tags of the nodes, and when all nodes in the container to be paired have been determined, the tag pairing operation is completed.
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