CN107835522B - Method for rapidly recovering micropower wireless network - Google Patents
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Abstract
A method for quickly recovering a micropower wireless network relates to the field of power utilization information acquisition. At present, when abnormal conditions such as power failure of the whole distribution area occur, and after power supply is recovered, a long time is consumed for completing the networking operation again by the central node and the child nodes. The method comprises a power failure recovery function process of all the distribution area, a power failure recovery working process of the central node and a power failure recovery working process of the child node. According to the technical scheme, after the central node and the child nodes are connected to the network, the next adjustment is carried out, and the stability of work is improved while the power failure recovery is improved. In the network access process, partial steps are removed, and a plurality of tasks are executed simultaneously, so that the network is recovered quickly, and the loss caused by power failure is reduced.
Description
Technical Field
The invention relates to the field of power consumption information acquisition, in particular to a method for quickly recovering a micropower wireless network.
Background
Under the power utilization information acquisition system of a power company, a micro-power wireless mode is adopted for the meter reading of a plurality of sites, a micro-power wireless central node is a micro-power wireless communication unit CAC integrated in a concentrator, and a sub-node is an electric energy meter or an acquisition device with the micro-power wireless communication unit. The CAC unit serving as the central node firstly scans channels after being electrified and started every time, determines a channel list of normal frequency hopping, and then performs a series of networking operations such as sending beacon frames, monitoring the channels, waiting for the sub-nodes to apply for network access and the like. After each time of starting, the child node can complete the network access operation through the steps of network discovery, parent node selection, network access application operation and the like; the network discovery is that channel residence (slow frequency hopping) monitoring of all frequency points is carried out on an MAC layer according to a certain time sequence, and the network discovery synchronous operation is completed by informing the network layer after the network discovery is monitored; the father node selection is to select an optimal node as a father node according to the communication condition of beacon frames sent by surrounding neighbors and indexes such as link quality and the like so as to apply for network access to the central node. If abnormal conditions such as power failure of the whole distribution area occur, after power supply is recovered, the central node and the sub-nodes need to spend long time for completing the networking operation again, and the consumed time is multiplied along with the increase of the network capacity.
Disclosure of Invention
The technical problem to be solved and the technical task to be solved by the invention are to perfect and improve the prior technical scheme and provide a method for rapidly recovering a micropower wireless network so as to achieve the purpose of increasing the network recovery speed under abnormal conditions such as power failure and the like. Therefore, the invention adopts the following technical scheme.
A micropower wireless network is used for the communication between concentrator and collector or electric energy meter, the wireless central node of micropower is the wireless communication unit CAC of micropower integrated in the concentrator, the sub-node is the electric energy meter or collector with wireless communication unit of micropower; the method is characterized in that: the method for quickly recovering the micropower wireless network comprises a power failure recovery function process of all the distribution room, a power failure recovery working process of a central node and a power failure recovery working process of a sub-node;
1) the process of all power failure recovery functions of the transformer area comprises the following steps:
11) after the platform area is powered on collectively, all equipment such as the central node and the subnodes work at fixed frequency points and are maintained for a period of time, so that the probability of receiving beacons by the subnodes is increased;
12) after receiving the beacon of the local network, all the child nodes immediately perform network access operation of a normal flow, and simultaneously start a heartbeat reporting flow so as to facilitate the central node to establish a routing table;
13) after the heartbeat reporting process is completed, the beacon is forwarded to accelerate the recovery of the whole network;
14) starting the whole network at the first time slot of the 4 th superframe, and starting frequency hopping communication according to the normal frequency hopping list;
2) the central node power failure recovery work flow comprises the following steps:
21) after the central node is powered on, executing the power failure recovery function flow of all the distribution areas;
22) after a plurality of superframes are continued, normal state frequency hopping is entered;
3) the power failure recovery workflow of the child node comprises the following steps:
31) executing active network access operation after electrification;
32) if the active network access is successful, ending the power failure recovery working process of the child node; if the active network access fails, executing all power failure recovery function flows of the platform area;
33) if the power failure recovery of the child node in the process of executing all power failure recovery functions of the platform area is successful, ending the power failure recovery working process of the child node; and if the power failure recovery of the sub-nodes in the process of executing all power failure recovery functions of the platform area fails, entering normal slow frequency hopping, scanning forced network access beacons of the central node, and when the sub-nodes scan the forced network access beacons, initiating a network access process to the central node to which the beacons belong unconditionally by all the sub-nodes which do not access the network.
According to the technical scheme, the network access speed of the central node and the child nodes is effectively improved through all power failure recovery function flows of the distribution room, the power failure recovery working flow of the central node and the power failure recovery working flow of the child nodes. And removing part of steps, and simultaneously executing a plurality of tasks, so that the network is quickly recovered, and the loss caused by power failure is reduced.
As a further improvement and supplement to the above technical solutions, the present invention also includes the following additional technical features.
Further, in step 22), after the central node lasts for 3 superframes, the central node enters normal-state frequency hopping in the 4 th superframe.
When the sub-node performs normal frequency hopping communication in the network of the central node, the idle time in each time slot of the synchronous network is utilized to enter peripheral network scanning, namely, the sub-node performs double-frequency point scanning in each receiving time slot, and the basic complete peripheral neighbor network information is obtained through long-time peripheral network scanning, and the advantages and disadvantages of the network conditions are comprehensively compared with those of the sub-node, so that the decision of whether to switch to other networks is made; and if the neighbor network is better than the network, executing gateway related operation.
Further, the node-optimal network selection process includes the following steps:
41) starting the optimal network selection work when receiving the time slot;
42) judging whether the network beacon preamble is detected within the overtime time or not, if the network beacon preamble is detected within the overtime time, waiting for the network message, if the network message is detected within the overtime time, receiving the network message, and if the network message is not detected within the overtime time, switching to a target scanning frequency point and starting slow frequency hopping scanning; after receiving the network message and when the network beacon preamble is not detected within the overtime, switching to a target scanning frequency point, and starting slow frequency hopping scanning;
43) continuously receiving the message, and recording neighbor network information if the message is an effective beacon;
44) judging whether the time slot is finished or not, if not, continuing to step 13); if the time slot is finished, comparing the link quality information of the neighbor network and the network;
45) judging whether the neighbor network is superior to the network, wherein the neighbor network comprises network level, link quality and network scale factors;
46) if the neighbor network is superior to the network, the network access related operation is executed, otherwise, the operation is finished, and the next receiving time slot is waited to start.
Further, after the central node and the child nodes are accessed to the network, executing a whole network sensing process: the method comprises the steps that a subnode monitors beacon frames sent by own neighbor subnodes, if a certain neighbor subnode is found to be more than 1 superframe without sending beacons, information is sent to a central node to report that the superframe of the subnode does not send beacons, the central node can send roll call frames to confirm whether the neighbor subnode is in a network or not after receiving the information, if the roll call confirmation frames are not received, the off-network condition is synchronized to a concentrator in real time, and the concentrator reports the off-network condition to an acquisition system master station in real time;
further, the whole network sensing process comprises the following steps:
51) the child node monitors neighbor beacon information;
52) judging whether the neighbor information is received, if not, continuing to execute the step 51) to monitor the neighbor beacon information; if the neighbor information is received, entering the next step 23);
53) calculating the time interval of receiving the neighbor node;
54) judging whether the time interval exceeds a limit value; if the time interval exceeds the limit value, reporting to the central node, and the neighbor may go offline, and if the time interval does not exceed the limit value, continuing to execute step 51) to listen to the neighbor beacon information.
55) The central node monitors the reported information of the child nodes, and if receiving the reported neighbor offline information of the child nodes, roll names of the reported child nodes;
56) and judging whether the child node responds, if not, reporting the offline of the child node of the concentrator, and if so, continuing to execute the step 55) to monitor the reported information of the child node.
Further, after the central node and the child nodes are connected to the network, executing a batch change flow and an active synchronous reporting flow;
batch change process: the central node periodically executes child node searching operation at the time t1 every day, and then synchronizes the affiliation with the concentrator at the time t2 every day so as to synchronize to the acquisition system master station;
active synchronous reporting flow: when a central node discovers a new sub-node, the operation of searching the sub-node is carried out in real time, only the affiliation relationship of the sub-node is synchronized to a concentrator in real time, the concentrator is synchronized to an acquisition system master station upwards, and the acquisition system master station determines the new affiliation relationship of the sub-node according to the sequence of synchronous reporting time; and the concentrator reports the synchronous attribution relationship to the acquisition system master station within m minutes after each time, the synchronous attribution relationship is not reported again no matter whether the attribution relationship is changed, and if the attribution relationship is changed after m minutes, the synchronous attribution relationship is continuously reported.
Further, the active synchronous reporting process includes synchronization between the central node CAC and the concentrator and synchronization between the concentrator and the acquisition system master station;
61) synchronization between the central node CAC and the concentrator: when a new node joins the network, judging whether the table needs to be searched, if so, starting the single-point table search, if not, directly reporting to the concentrator, and after receiving a confirmation response, finishing the synchronization process between the central node CAC and the concentrator;
62) synchronization between concentrator and acquisition system master station: the concentrator updates the file synchronously after acquiring the information of the new added child nodes reported by the CAC, reports a parameter change recording event ERC3, the changed parameter data unit in the data content is marked as a measurement point state parameter F150, and reports the file parameter change mark in the concentrator to the acquisition system master station.
Has the advantages that:
1. according to the technical scheme, the network access speed of the central node and the child nodes is effectively improved through all power failure recovery function flows of the distribution room, the power failure recovery working flow of the central node and the power failure recovery working flow of the child nodes. And removing part of steps, and simultaneously executing a plurality of tasks, so that the network is quickly recovered, and the loss caused by power failure is reduced.
2. According to the technical scheme, after the central node and the child nodes are connected to the network, the next adjustment is carried out, and the stability of work is improved while the power failure recovery is improved.
3. Through the whole network sensing step, the off-network of the child node can be found in time, the corresponding relation between the central node and the child node is modified in time, and the data loss situation and the like are avoided;
4. according to the technical scheme, by means of the beacon frames with shorter periodicity of the MAC layer, the sub-nodes monitor the beacon frames sent by the neighbor sub-nodes of the sub-nodes and discover the off-network of the neighbor nodes in time, so that the abnormal conditions can be discovered and repaired quickly, and the working accuracy, stability and reliability of the power utilization information acquisition system are improved.
5. Through the sub-node optimal network selection step, the sub-node can scan the peripheral network under the normal communication state of the network, the normal work is not influenced, once the conditions of non-ideal network, network disconnection and the like occur, the network can be switched in time, and the condition of data loss is avoided.
6. The batch change step and the active synchronous reporting step ensure that the corresponding relation of the files between the central node and the child nodes is accurate, so that the central node can communicate with the child nodes in time.
Drawings
Fig. 1 is a flow chart of the power down recovery function of the distribution room of the present invention.
Fig. 2 is a flow chart of the central node power loss recovery of the present invention.
FIG. 3 is a child node power loss recovery flow diagram of the present invention.
Fig. 4 is a flow chart of the selection of the optimal network of the child nodes of the present invention.
FIG. 5 is a sub-node processing flow diagram of the full network aware step of the present invention.
FIG. 6 is a flow chart of the central node processing of the full network aware step of the present invention.
Fig. 7 is a flow chart of the synchronization between the central node CAC and the concentrator of the invention.
Detailed Description
The technical scheme of the invention is further explained in detail by combining the drawings in the specification.
The electricity consumption information acquisition system adopts two-stage network communication, three communication nodes are an acquisition system master station, a concentrator and an acquisition device or an electric energy meter from top to bottom in sequence, the concentrator adopts a micro-power wireless mode to communicate with the acquisition device or the electric energy meter so as to remotely read data of the acquisition device or the electric energy meter, the concentrator is provided with a communication unit CAC which is a central node of a micro-power wireless network, and a communication unit where the acquisition device or the electric energy meter is located is a sub-node; the first-stage network of the two-stage network communication is a remote communication mode between the acquisition system master station and the concentrator; the second level is a micropower wireless communication mode between the central node and the child nodes, the central node is responsible for establishing a network, the child nodes execute network access application operation, and in the established network, the central node needs to manage routing tables from the central node to all the child nodes.
The method for quickly recovering the micropower wireless network comprises a power failure recovery function process of all the distribution areas, a power failure recovery working process of a central node and a power failure recovery working process of a child node:
1) as shown in fig. 1, the process of recovering all power loss in a distribution room includes the following steps:
11) after the platform area is powered on collectively, all equipment such as the central node and the subnodes work at fixed frequency points and are maintained for a period of time, so that the probability of receiving beacons by the subnodes is increased;
12) after receiving the beacon of the local network, all the child nodes immediately perform network access operation of a normal flow, and simultaneously start a heartbeat reporting flow so as to facilitate the central node to establish a routing table;
13) after the heartbeat reporting process is completed, the beacon is forwarded to accelerate the recovery of the whole network;
14) starting the whole network at the first time slot of the 4 th superframe, and starting frequency hopping communication according to the normal frequency hopping list;
2) the central node power failure recovery workflow, as shown in fig. 2, includes the following steps:
21) after the central node is powered on, executing the power failure recovery function flow of all the distribution areas;
22) after the central node continues to carry out 3 superframes, the central node enters normal state frequency hopping in the 4 th overfrequency frame;
3) as shown in fig. 3, the power failure recovery workflow of the child node includes the following steps:
31) executing active network access operation after electrification;
32) if the active network access is successful, ending the power failure recovery working process of the child node; if the active network access fails, executing all power failure recovery function flows of the platform area;
33) if the power failure recovery of the child node in the process of executing all power failure recovery functions of the platform area is successful, ending the power failure recovery working process of the child node; and if the power failure recovery of the sub-nodes in the process of executing all power failure recovery functions of the platform area fails, entering normal slow frequency hopping, scanning forced network access beacons of the central node, and when the sub-nodes scan the forced network access beacons, initiating a network access process to the central node to which the beacons belong unconditionally by all the sub-nodes which do not access the network.
According to the technical scheme, the network access speed of the central node and the child nodes is effectively improved through all power failure recovery function flows of the distribution room, the power failure recovery working flow of the central node and the power failure recovery working flow of the child nodes. And removing part of steps, and simultaneously executing a plurality of tasks, so that the network is quickly recovered, and the loss caused by power failure is reduced.
After the central node and the child nodes are accessed to the network, the following processes are executed:
first, the sub-node optimal network selection process, as shown in figure 4,
the node optimal network selection process comprises the following steps:
41) starting the optimal network selection work when receiving the time slot;
42) judging whether the network beacon preamble is detected within the overtime time or not, if the network beacon preamble is detected within the overtime time, waiting for the network message, if the network message is detected within the overtime time, receiving the network message, and if the network message is not detected within the overtime time, switching to a target scanning frequency point and starting slow frequency hopping scanning; after receiving the network message and when the network beacon preamble is not detected within the overtime, switching to a target scanning frequency point, and starting slow frequency hopping scanning;
43) continuously receiving the message, and recording neighbor network information if the message is an effective beacon;
44) judging whether the time slot is finished or not, if not, continuing to step 13); if the time slot is finished, comparing the link quality information of the neighbor network and the network;
45) judging whether the neighbor network is superior to the network, wherein the neighbor network comprises network level, link quality and network scale factors;
46) if the neighbor network is superior to the network, the network access related operation is executed, otherwise, the operation is finished, and the next receiving time slot is waited to start.
When the subnode performs normal frequency hopping communication in the network of the central node, the subnode enters peripheral network scanning by using the idle time in each time slot of the synchronous network, namely the subnode performs double-frequency point scanning in each receiving time slot, and obtains basically complete peripheral neighbor network information through long-time peripheral network scanning, and the subnode comprehensively compares the information with the network condition of the subnode to determine whether to switch to other networks; and if the neighbor network is better than the network, executing gateway related operation.
Secondly, the whole network sensing process, as shown in figures 5 and 6,
the whole network perception process comprises the following steps:
51) the child node monitors neighbor beacon information;
52) judging whether the neighbor information is received, if not, continuing to execute the step 51) to monitor the neighbor beacon information; if the neighbor information is received, entering the next step 23);
53) calculating the time interval of receiving the neighbor node;
54) judging whether the time interval exceeds a limit value; if the time interval exceeds the limit value, reporting to the central node, and the neighbor may go offline, and if the time interval does not exceed the limit value, continuing to execute step 51) to listen to the neighbor beacon information.
55) The central node monitors the reported information of the child nodes, and if receiving the reported neighbor offline information of the child nodes, roll names of the reported child nodes;
56) and judging whether the child node responds, if not, reporting the offline of the child node of the concentrator, and if so, continuing to execute the step 55) to monitor the reported information of the child node.
The method comprises the steps that a subnode monitors beacon frames sent by own neighbor subnodes, if a certain neighbor subnode is found to be more than 1 superframe without sending beacons, information is sent to a central node to report that the superframe of the subnode does not send beacons, the central node can send roll call frames to confirm whether the neighbor subnode is in a network or not after receiving the information, if the roll call confirmation frames are not received, the off-network condition is synchronized to a concentrator in real time, and the concentrator reports the off-network condition to an acquisition system master station in real time;
thirdly, executing a batch change flow and an active synchronous reporting flow;
batch change process: the central node periodically executes child node searching operation at the time t1 every day, and then synchronizes the affiliation with the concentrator at the time t2 every day so as to synchronize to the acquisition system master station;
active synchronous reporting flow: when a central node discovers a new sub-node, the operation of searching the sub-node is carried out in real time, only the affiliation relationship of the sub-node is synchronized to a concentrator in real time, the concentrator is synchronized to an acquisition system master station upwards, and the acquisition system master station determines the new affiliation relationship of the sub-node according to the sequence of synchronous reporting time; and the concentrator reports the synchronous attribution relationship to the acquisition system master station within m minutes after each time, the synchronous attribution relationship is not reported again no matter whether the attribution relationship is changed, and if the attribution relationship is changed after m minutes, the synchronous attribution relationship is continuously reported.
The active synchronous reporting process comprises the synchronization between a central node CAC and a concentrator and the synchronization between the concentrator and an acquisition system master station;
61) synchronization between the central node CAC and the concentrator: when a new node joins the network, judging whether the table needs to be searched, if so, starting the single-point table search, if not, directly reporting to the concentrator, and after receiving a confirmation response, finishing the synchronization process between the central node CAC and the concentrator; as shown in fig. 7;
62) synchronization between concentrator and acquisition system master station: the concentrator updates the file synchronously after acquiring the information of the new added child nodes reported by the CAC, reports a parameter change recording event ERC3, the changed parameter data unit in the data content is marked as a measurement point state parameter F150, and reports the file parameter change mark in the concentrator to the acquisition system master station.
The method for rapidly recovering a micropower wireless network shown in fig. 1-7 is a specific embodiment of the present invention, has embodied the substantial features and advantages of the present invention, and can be modified equivalently according to the actual use requirements and under the teaching of the present invention, all of which are within the protection scope of the present solution.
Claims (8)
1. A micropower wireless network is used for the communication between concentrator and collector or electric energy meter, the wireless central node of micropower is the wireless communication unit CAC of micropower integrated in the concentrator, the sub-node is the electric energy meter or collector with wireless communication unit of micropower; the method is characterized in that: the method for quickly recovering the micropower wireless network comprises a power failure recovery function process of all the distribution room, a power failure recovery working process of a central node and a power failure recovery working process of a sub-node;
1) the process of all power failure recovery functions of the transformer area comprises the following steps:
11) after the platform area is powered on collectively, all equipment including the central node and the subnodes work at fixed frequency points and are maintained for a period of time, so that the probability of receiving beacons by the subnodes is increased;
12) after receiving the beacon of the local network, all the child nodes immediately perform network access operation of a normal flow, and simultaneously start a heartbeat reporting flow so as to facilitate the central node to establish a routing table;
13) after the heartbeat reporting process is completed, the beacon is forwarded to accelerate the recovery of the whole network;
14) starting the whole network at the first time slot of the 4 th superframe, and starting frequency hopping communication according to the normal frequency hopping list;
2) the central node power failure recovery work flow comprises the following steps:
21) after the central node is powered on, executing the power failure recovery function flow of all the distribution areas;
22) after a plurality of superframes are continued, normal state frequency hopping is entered;
3) the power failure recovery workflow of the child node comprises the following steps:
31) executing active network access operation after electrification;
32) if the active network access is successful, ending the power failure recovery working process of the child node; if the active network access fails, executing all power failure recovery function flows of the platform area;
33) if the power failure recovery of the child node in the process of executing all power failure recovery functions of the platform area is successful, ending the power failure recovery working process of the child node; and if the power failure recovery of the sub-nodes in the process of executing all power failure recovery functions of the platform area fails, entering normal slow frequency hopping, scanning forced network access beacons of the central node, and when the sub-nodes scan the forced network access beacons, initiating a network access process to the central node to which the beacons belong unconditionally by all the sub-nodes which do not access the network.
2. The method of claim 1, wherein the method comprises: in step 22), the central node enters normal state frequency hopping at the 4 th super-frequency frame after 3 superframes.
3. The method of claim 1, wherein the method comprises: when the sub-node performs normal frequency hopping communication in the network of the central node, the idle time in each time slot of a synchronous network is utilized to enter peripheral network scanning, the sub-node performs double-frequency point scanning in each receiving time slot, complete peripheral neighbor network information is obtained through long-time peripheral network scanning, and the advantages and disadvantages of the network conditions are comprehensively compared with those of the sub-node, so that the decision of whether to switch to other networks is made; and if the neighbor network is better than the network, executing gateway related operation.
4. The method of claim 3, wherein the method comprises: the node optimal network selection process comprises the following steps:
41) starting the optimal network selection work when receiving the time slot;
42) judging whether the network beacon preamble is detected within the overtime time or not, if the network beacon preamble is detected within the overtime time, waiting for the network message, if the network message is detected within the overtime time, receiving the network message, and if the network message is not detected within the overtime time, switching to a target scanning frequency point and starting slow frequency hopping scanning; after receiving the network message or when the network beacon preamble is not detected within the overtime, switching to a target scanning frequency point and starting slow frequency hopping scanning;
43) continuously receiving the message, and recording neighbor network information if the message is an effective beacon;
44) judging whether the time slot is finished or not, if not, continuing to step 43); if the time slot is finished, comparing the link quality information of the neighbor network and the network;
45) judging whether the neighbor network is superior to the network, wherein the neighbor network comprises network level, link quality and network scale factors;
46) if the neighbor network is superior to the network, the network access related operation is executed, otherwise, the operation is finished, and the next receiving time slot is waited to start.
5. The method of claim 1, wherein the method comprises: after the central node and the child nodes are accessed to the network, executing a whole network perception process: the method comprises the steps that a child node monitors beacon frames sent by own neighbor child nodes, if a certain neighbor child node is found to be more than 1 superframe without sending beacons, information is sent to a central node to report that the superframe of the child node does not send beacons, the central node can send roll call frames to confirm whether the neighbor child node is on the network or not after receiving the information, if the roll call confirmation frames are not received, the off-network condition is synchronized to a concentrator in real time, and the concentrator reports the off-network condition to an acquisition system master station in real time.
6. The method of claim 5, wherein the method comprises: the whole network perception process comprises the following steps:
51) the child node monitors neighbor beacon information;
52) judging whether the neighbor information is received, if not, continuing to execute the step 51) to monitor the neighbor beacon information; if the neighbor information is received, go to the next step 53);
53) calculating the time interval of receiving the neighbor node;
54) judging whether the time interval exceeds a limit value; if the time interval exceeds the limit value, reporting to the central node, and the neighbor is off line, if the time interval does not exceed the limit value, continuing to execute the step 51) to monitor the neighbor beacon information;
55) the central node monitors the reported information of the child nodes, and if receiving the reported neighbor offline information of the child nodes, roll names of the reported child nodes;
56) and judging whether the child node responds, if not, reporting the offline of the child node of the concentrator, and if so, continuing to execute the step 55) to monitor the reported information of the child node.
7. The method of claim 1, wherein the method comprises: after the central node and the child nodes are accessed to the network, executing a batch change flow and an active synchronous reporting flow;
batch change process: the central node periodically executes child node searching operation at the time t1 every day, and then synchronizes the affiliation with the concentrator at the time t2 every day so as to synchronize to the acquisition system master station;
active synchronous reporting flow: when a central node discovers a new sub-node, the operation of searching the sub-node is carried out in real time, only the affiliation relationship of the sub-node is synchronized to a concentrator in real time, the concentrator is synchronized to an acquisition system master station upwards, and the acquisition system master station determines the new affiliation relationship of the sub-node according to the sequence of synchronous reporting time; and the concentrator reports the synchronous attribution relationship to the acquisition system master station within m minutes after each time, the synchronous attribution relationship is not reported again no matter whether the attribution relationship is changed, and if the attribution relationship is changed after m minutes, the synchronous attribution relationship is continuously reported.
8. The method of claim 7, wherein the method comprises: the active synchronous reporting process comprises the synchronization between a central node CAC and a concentrator and the synchronization between the concentrator and an acquisition system master station;
61) synchronization between the central node CAC and the concentrator: when a new node joins the network, judging whether the table needs to be searched, if so, starting the single-point table search, if not, directly reporting to the concentrator, and after receiving a confirmation response, finishing the synchronization process between the central node CAC and the concentrator;
62) synchronization between concentrator and acquisition system master station: the concentrator updates the file synchronously after acquiring the information of the new added child nodes reported by the CAC, reports a parameter change recording event ERC3, the changed parameter data unit in the data content is marked as a measurement point state parameter F150, and reports the file parameter change mark in the concentrator to the acquisition system master station.
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