Electric quantity synchronous processing-based intelligent electric energy meter dual core communication method

Abstract

The invention discloses an electric quantity synchronous processing-based intelligent electric energy meter dual core communication method. A master SPI management core and a slave SPI metering core are connected via an SPI interface; a communication frame between the management core and the metering core consists of a frame start character, a control code, a data field length, a data field, a checking code and an ending character; the data field comprises data markers of electric energy meter data items that need to be read; the intelligent electric energy meter dual core communication method is advantageous in that an SPI communication protocol is built between the electric energy meter management core and the metering core, the communication frame is free from address redundancy, the electric energy meter data items that are needed are read according to the data markers, communication between the management core and the metering core is enabled to be simple and highly efficient, and electric quantity metering of the management core and the metering core can be synchronized.

Description

technical field [0001] The invention relates to a communication method, in particular to a communication method between two cores of an intelligent electric energy meter based on electric quantity synchronous processing. Background technique [0002] With the advancement of Internet technology, people's daily life is gradually changing. Among them, the development of electrical appliances is changing with each passing day, the electricity consumption has increased significantly, the proportion of electricity bills in daily expenses has increased significantly, and the accuracy requirements for electricity metering are gradually increasing. As a result, the IR46 standard issued by the International Legal Metrology Organization requires: "The legal measurement part (electric energy measurement data and clock data) is not affected by other parts", and the dual-core smart energy meter came into being. The measurement core is responsible for measuring electricity consumption. Th...

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Problems solved by technology

As a result, the IR46 standard issued by the International Legal Metrology Organization requires: "The legal measurement part (electric energy measurement data and clock data) is not affected by other parts", and the dual-core smart energy meter came into being. The measurement core is responsible for measuring electricity consumption. The management core records electricity charges according to the energy metering data and clock data of the metering core, so it is necessary to establish data communication between the two cores. However, the common communication method has address redundancy, which affects the communication speed, and it is difficult to achieve power synchronization between the two cores.

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