[0037] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0038] refer to figure 1 and figure 2 , figure 1 It is a method flowchart of a specific embodiment of a method for reporting a power outage in a centralized copying system of the present invention; figure 2 It is a schematic diagram of the centralized copying system in a method for reporting a power outage of the centralized copying system of the present invention; during a power failure, the centralized copying system includes a central controller A (i.e. a CCO node), a plurality of non-blackout node B (i.e. a normal STA node) and multiple A power outage node C (that is, a power outage STA node), a central controller A, a plurality of non-power outage nodes B, and a plurality of power outage nodes C form a communication network, and the area where a plurality of power outage nodes C is located constitutes a power outage area; the present invention proposes a The methods for reporting power outages in the centralized copying system include:
[0039] Information collection step: When a power outage occurs, each power outage node in the centralized copying system summarizes the power outage information of all power outage nodes and generates the total power outage information;
[0040] Information reporting steps: the outage node reports the general outage information to the central controller.
[0041] Use the local communication module of the outage node in the station area to send outage information in real time, and report the outage event after receiving the outage information in the non-outage node, realize the real-time report of outage event, and make accurate judgment on outage users, so as to troubleshoot and recover as soon as possible powered by. If there is a power outage of the meter in a certain area in the station area, the module of the power outage meter will immediately send out the power outage information, and the module of the non-power outage meter will normally receive and forward the data. If the power outage message is not immediately forwarded by the power outage meter module at this time, the channel conflict will be aggravated. Therefore, the entire power outage reporting process is divided into two stages: information collection and information reporting, so as to reduce the occurrence of network storms in centralized reporting, thereby improving the reliability of reporting.
[0042] As a further improvement of the technical solution, the information collection steps include:
[0043] First of all, when a power outage occurs, each power outage node in the centralized copying system generates a power outage message and locally broadcasts a power outage message; specifically, when a power outage occurs, each power outage node in the centralized copying system waits for the first waiting time. The power outage information is generated into a power outage message and the outage message is broadcast locally, and the first waiting time of each power outage node is different. refer to figure 2 , at present, power outages occur at the same time in the power outage area. If no special processing is done, the power outage STA nodes will basically send the power outage information at the same time, and the probability of conflict is high. Therefore, in the present invention, each power failure node in the power failure area waits for a different first waiting time before generating and broadcasting the power failure message, so as to ensure the reliability of reporting. In addition, after a power failure, the switch will be disconnected, the PLC channel will be disconnected, and there will be a large attenuation, so that the conflict domain of each node will be greatly reduced. Basically, the same meter box, adjacent floors, and adjacent units will In a conflict domain, therefore, the power outage node can send out power outage information (the present invention is a broadcast power outage message), and can send multiple times. Finally, because the original unicast route (one-to-many broadcast) maintained by the power outage node is not necessarily reliable, therefore, in order to solve the problem that the original unicast route is easily invalidated after the power outage, the power outage node adopts the local broadcast (one-to-many broadcast) method in the present invention. Information reporting is carried out in a manner to ensure the reliability of information reporting.
[0044] Then, each outage node receives outage messages from other outage nodes to summarize outage information of all outage nodes and generate total outage information. Specifically, each power failure node receives power failure messages from other power failure nodes within the second waiting time to summarize power failure information of all power failure nodes and generate total power failure information.
[0045] Below, refer to image 3 , image 3 It is a method flowchart of a specific embodiment of the information collection step of the method for reporting a power outage in a centralized copying system of the present invention, specifically illustrating the information collection process of each power outage node as follows:
[0046](1) The node judges that a power outage has occurred, and randomizes a first waiting time to separate the time at which each power outage node sends data. The first waiting time is selected within the random window (n, m), and the unit of m and n is ms. Refer to Table 1, the first waiting time is randomly selected from n to m, and the first waiting time of each power outage node is different to ensure the reliability of power outage information reporting.
[0047] (2) After judging that the first waiting time expires, the power outage node generates a power outage message, and sends it in a local broadcast mode (CSMA mechanism).
[0048] (3) After the local power outage message is sent, wait for the second waiting time T to carry out the data collection work. During the second waiting time, every time the power outage message received by the neighbor outage node is analyzed (according to T8 analysis, Each byte in the power outage message has 8 bits), the analysis result and the power outage information (ie bitmap, bitmap file) stored by the power outage node itself are combined and updated to the latest result, and the latest result is updated every time the second waiting time expires. As a result, a power outage message is generated for broadcast transmission; in this embodiment, the second waiting time is 2s.
[0049] (4) Determine whether the second waiting time T expires? If it expires, it is judged whether the maximum number of sending times N of the power outage node is reached, and if it is not reached, then return to step (1) to continue sending, and if it is reached, the power outage node ends this collection. Refer to Table 1 for suggested values of the random window (n, m), the second waiting time T, and the maximum number of transmission times N of the power-off node.
[0050]
[0051]
[0052] Table I
[0053] To sum up, when a power outage occurs, before the power outage node sends a power outage message, it first randomly waits for a waiting time (random in the window) to separate the timing of sending data from nodes in the same conflict domain to reduce the probability of conflict. The power outage message is sent by local broadcast, and each outage node parses and merges the received outage message, so that as long as one node reports successfully, it will report all outage information to the central controller CCO, which is more robust. Since the PLC channel is disconnected after a power outage, the collision domain will be greatly reduced, allowing all power outage nodes to periodically send data to enhance reliability. The outage node broadcasts the outage information locally, and performs a summary operation, which is randomized according to the level to reduce the probability of conflict. By adopting bitmap union, the power outage information in the entire outage area can be aggregated together. As long as one frame of message is successfully reported, the outage information in the entire area can be uploaded to the central controller CCO.
[0054] As a further improvement of the technical solution, the information reporting steps include:
[0055] The power outage node reports the total power outage information to the non-power outage node;
[0056] During the third waiting time, the non-power outage nodes receive the total power outage information, analyze the total power outage information, and take a union operation to obtain new total power outage information;
[0057] Nodes that have not been powered off will unicast the new total power outage information to the central controller.
[0058] Specifically, after receiving the first frame of power failure information message, the non-power outage node starts to wait for the third waiting time, such as 30s. In order to completely report the power outage information, send as little data as possible during the power outage node summary power outage information stage to reduce channel occupancy . All power outage information received during the third waiting time are parsed and merged. After the third waiting time expires, the final result (i.e. new power outage total information) is generated and reported to the central controller CCO by unicast . Since the physical line is disconnected during a power outage, considering the simplified scheme, each node that is not out of power will perform the same processing after receiving the power outage message without distinction.
[0059] Based on the method for reporting power outages in the centralized copying system, the present invention also provides a system for reporting power outages in the centralized copying system, including
[0060] The information collection unit is used for when a power outage occurs, each power outage node in the centralized copying system summarizes the power outage information of all power outage nodes and generates the total power outage information;
[0061] The information reporting unit is used to report the power outage general information to the central controller by the outage node.
[0062] As a further improvement of the technical solution, the information collection unit includes:
[0063] The power outage message generation and broadcasting module is used to generate a power outage message for each power outage node in the centralized copy system when a power outage occurs, and broadcast the power outage message locally; further, the power outage message generation and broadcasting module is used for power outages , each power outage node in the centralized copying system waits for the first waiting time, then generates a power outage message with the power outage information and broadcasts the power outage message locally, and the first waiting time for each power outage node is different.
[0064] The power outage total information generation module is used for each power outage node to receive power outage messages from other power outage nodes to summarize the power outage information of all power outage nodes and generate power outage total information. Further, the power outage total information generating module is used for each power outage node to receive power outage messages from other power outage nodes within the second waiting time to summarize the power outage information of all power outage nodes and generate power outage total information.
[0065] As a further improvement of the technical solution, the information reporting unit includes:
[0066] Power outage total information reporting module, used for power outage nodes to report power outage total information to non-power outage nodes;
[0067] The new outage total information acquisition module is used for non-power outage nodes to receive the power outage total information within the third waiting time, and analyze the power outage total information, and take a union operation to obtain new power outage total information;
[0068] The new power outage total information reporting module is used for non-power outage nodes to unicast report the new power outage total information to the central controller.
[0069] The present invention is a method and system for reporting a power outage in a centralized copying system. When a power outage occurs, each power outage node in the centralized copying system summarizes the power outage information of all power outage nodes and generates the total power outage information; the power outage nodes report the power outage total information to the central controller . When a user’s power outage accident occurs in the power consumption information collection system, the power outage report is performed in real time to improve the real-time performance of power outage reporting, and to make accurate judgments on power outage users, so as to troubleshoot as soon as possible and restore power supply; in addition, the entire power outage reporting process is divided into The two stages of information collection and information reporting reduce the generation of centralized reporting network storms, thereby improving the reliability of reporting.
[0070] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the described embodiments, those skilled in the art can also make various equivalent deformations or replacements without violating the spirit of the present invention , these equivalent modifications or replacements are all within the scope defined by the claims of the present application.
