Communication method based on whole-network perception mechanism and used for electricity information acquisition system

Abstract

The invention provides a communication method based on a whole-network perception mechanism and used for an electricity information acquisition system, belonging to the field of electricity information acquisition. Currently, the fact that a certain child node is off a network can only be found out after a period lasting for at least N calling-over frames, so data is easily lost, which affects the reliability of operation. The method provided by the invention comprises a step of whole-network perception. In the step of whole-network perception, a child node monitors beacon frames sent by neighboring child nodes, and if the child node finds out that a certain neighboring child node does not send a beacon in one or more superframes, the child node sends a message that the neighboring child node does not send a beacon in the superframe to a central node; after the central node receives the message, the central node sends a calling-over frame to confirm whether the neighboring child node is in the network; if a calling-over confirmation frame is not received, the central node synchronously sends the off-network situation to a concentrator in real time; and the concentrator reports the off-network situation to a master station of the acquisition system in real time. The communication method provided by the invention is effectively improved in the efficiency of finding out the off-network situation of neighboring nodes, which is beneficial for quick discovery of problems; so the accuracy, stability and reliability of operation of the electricity information acquisition system are improved.

Description

technical field [0001] The invention relates to the field of electricity consumption information collection, in particular to a communication method for an electricity consumption information collection system based on a whole network perception mechanism. Background technique [0002] The power consumption information collection system of the power company generally adopts two-level network communication, namely the main station of the collection system, the concentrator, the collector or the electric energy meter. The communication unit CAC (Cellular Access Center) is the central node of the micro-power wireless. The communication unit where the collector or the energy meter is located is the sub-node. The concentrator remotely reads the data of the collector or the energy meter through the CAC. The first-level network of the electricity consumption information collection system is the long-distance communication methods such as GPRS, 3G / 4G, and optical fiber used between ...

AI Technical Summary

Problems solved by technology

In order not to affect normal business data, it is necessary to reduce the proportion of network capacity occupied by maintenance information such as roll call frames. Therefore, the roll call frame cannot be sent too frequently and the cycle should not be too short, and the active transmission can only be controlled by the central node. If a child node is away from network, it needs at least N periods of roll call frames to find out, and the data is easily lost, which affects the reliability of the work

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