Electric energy meter event information copying and reading method

Abstract

The invention discloses an electric energy meter event information copying and reading method, and relates to a collection method. At present, a master node can only achieve control by sending information frames to slave nodes, namely electric energy meters, one by one in a periodically polling way. The electric energy meter event information copying and reading method comprises the following steps: sending a broadcast reading event information message on a bus by the master node; actively sending corresponding event information to the master node by each electric energy meter receiving the message, and if a certain electric energy meter senses that the master node is in a conversation with another electric energy meter, randomly delaying sending; if the master node does not receive the information replied by all the smart electric energy meters within the receiving timeout period, sending the broadcast reading event information message again; if the master node still does not receive the information replied by any of the smart electric energy meters, copying and reading the unsuccessful smart electric energy meters in a roll call manner. According to the technical scheme, abnormal event information query is performed in a broadcast mode, so that the efficiency is high; when the master node is in data transmission with one electric energy meter slave node, the other slave nodes send random delay so as to avoid congestion.

Description

technical field [0001] The invention relates to a collection method, in particular to a method for reading event information of an electric energy meter. Background technique [0002] In the power consumption information collection system of the power company, the concentrator or collector and the energy meter can communicate through RS-485, micro-power wireless, power line carrier, etc., and they all belong to the master-slave structure in terms of the characteristics of the link layer. The half-duplex mode, that is, the "one question one answer" method, in which the concentrator or collector is the master node, and the energy meter is the slave node, and each energy meter has its own unique communication address code. [0003] The establishment and release of communication between the concentrator or collector and the energy meter are controlled by the information frame sent by the master node, so the master node can only send information frames to the slave node energy me...

AI Technical Summary

Problems solved by technology

[0003] The establishment and release of communication between the concentrator or collector and the energy meter are controlled by the information frame sent by the master node, so the master node can only send information frames to the slave node energy meter one by one through periodic polling, so that Obtain relevant information in the energy meter, including abnormal event information (hereinafter collectively referred to as events) such as faults and operations, but this will greatly reduce the efficiency of obtaining event information, and does not take advantage of the maintenance of the entire power consumption information collection system

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