Method for acquiring real-time time of data acquisition module of an intelligent electric meter based on master station time

Abstract

The invention relates to a method for acquiring real-time time of a data acquisition module of an intelligent electric meter based on master station time. The method is characterized in that: in the previous time synchronization process of the intelligent electric meter, the data acquisition module stores the time difference between the master station time and the electric meter time into a memory chip; and in the next time synchronization, the data acquisition module adds the master station time and the time difference in the memory chip to obtain the real-time time. Thus, the real-time time of the data acquisition module can be acquired in an intelligent electric meter without a clock chip and a clock chip power supply, the problem that the real-time time can not be acquired in the case of power failure of batteries in the prior art is solved, the energy waste caused by the power supply of the batteries is avoided, and the entire power consumption of the intelligent electric meter is reduced. The method for acquiring real-time time of a data acquisition module of an intelligent electric meter based on master station time has the advantages of simple and convenient application mode, low realization cost and relatively wide application range.

Description

technical field [0001] The invention relates to the technical field of application of smart meters, in particular to the technical field of methods for acquiring real-time time of smart meters, and specifically refers to a method for realizing real-time time acquisition by a data acquisition module of smart meters based on master station time. Background technique [0002] All smart meters include a data acquisition module to collect electricity consumption data and send it to the master station. Due to the need to accurately determine the time to ensure that the time period of data collection is correct, the real-time clock function must be implemented on the data collection module. The smart ammeters in the prior art all include an independent clock chip and a battery supplying power to the clock chip. Ensure that the clock chip can provide correct real-time time to the data acquisition module under the condition of continuous power supply. But this kind of smart meter, ...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings in the above-mentioned prior art, and provide a real-time clock function without a clock chip and a power supply battery, thereby solving the problem that the real-time time cannot be obtained when the battery is powered off in the prior art, and The problem of energy waste caused by battery power supply, and the application method is simple, the implementation cost is low, and the method for obtaining real-time time by the smart meter data acquisition module based on the master station time is widely used.

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