Online upgrading method for electric energy meter

Abstract

The invention discloses an online upgrading method for an electric energy meter. An upper computer sends a command to the electric energy meter, and a storage region of an upgrading file is reset. The upper computer sends the upgrading file to an external memory of the electric energy meter with a specified number, a corresponding sign is arranged next, and then the correctness of the upgrading file is checked; after the upgrading file passes the check, a corresponding sign is arranged, and if the upgrading file does not pass the check, the corresponding sign is removed, and follow-up upgrading operation is not conducted; the electric energy meter is restarted. In the starting process, whether the electric energy meter is upgraded or not is selected by checking the position of the corresponding sign. If the electric energy meter is not upgraded, the electric energy meter runs normally. If the electric energy meter is upgraded, the electric energy meter wipes off a corresponding region of internal Flash, reads the upgrading file in the external memory to an RAM space by multiple times and then updates the upgrading file into the internal Flash; after the upgrading file is completely updated, the corresponding sign is removed, the electric energy meter is restarted, and the upgrading operation is over. By means of the online upgrading method, online grading of the electric energy meter is achieved, the operation difficulty is low, and upgrading is convenient.

Description

technical field [0001] The invention relates to an online upgrading method of an electric energy meter. Background technique [0002] After the energy meter starts, load the program code and CE (electric energy measurement unit) code from the flash memory (Flash) to run. In the development and design stage, the compiled program can be burned into the flash memory of the chip through the emulator, so as to realize the update and upgrade of the program. In the production stage of the electric energy meter, the program is programmed into the chip through a dedicated programmer. After the energy meter leaves the factory, if there is a special requirement to upgrade the program, it can only be operated after returning to the factory. Although the existing technology can easily upgrade the electric energy meter program in the program design stage, but in the electric energy meter production stage and after it leaves the factory, if there is an upgrade demand, it can only be perf...

AI Technical Summary

Problems solved by technology

Although the existing technology can easily upgrade the electric energy meter program in the program design stage, but in the electric energy meter production stage and after it leaves the factory, if there is an upgrade demand, it can only be performed on a single electric energy meter one by one through the programmer. The upgrade operation is very troublesome, especially when the electric energy meters are installed in thousands of households. If you want to upgrade and update, you need to return all the electric energy meters to the factory and then upgrade them, or go to the installation location of each electric meter , remove the lead seal, and use special tools to upgrade, the upgrade cost is huge

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