Intelligent ammeter electric energy metering device based on NB-IoT

Abstract

The invention discloses an intelligent ammeter electric energy metering device based on NB-IoT and relates to the field of an ammeter metering device. The intelligent ammeter electric energy metering device comprises an acquisition device, an error detection device, a metering device and a processing assembly which are sequentially connected, wherein the acquisition device comprises a current transformer, a voltage transformer and a sampling circuit, the current transformer and the voltage transformer are electrically connected with the sampling circuit, the error detection device comprises a voltage comparator and a voltage loss device, the metering device comprises a metering chip, the sampling circuit, the voltage comparator, the voltage loss device and the metering chip are sequentially electrically connected, the sampling circuit, the voltage comparator and the metering chip are sequentially electrically connected, and the processing assembly comprises a processor and a memory. The intelligent ammeter electric energy metering device is advantaged in that through arranging the voltage comparator and the voltage loss device, an error of an actual voltage caused by the use environment is reduced, adjustment is carried out through the variable ratio current transformer is carried out after sampling, and the metering error of season electricity users is reduced.

Description

technical field [0001] The invention relates to the field of electric meter metering devices, in particular to an NB-IoT-based smart meter electric energy metering device. Background technique [0002] Electric energy metering devices include various types of electric energy meters, voltage transformers for metering, current transformers for metering and their secondary circuits, and electric energy metering cabinets (boxes), etc. In the various links of power generation, supply, and electricity consumption in the power system, a large number of electric energy metering devices are installed to measure power generation, plant power consumption, power supply, and electricity sales, etc., in order to formulate production plans and do a good job of economic accounting. And provide a basis for metering electricity. [0003] The cellular-based Narrow Band Internet of Things (NB-IoT) has become an important branch of the Internet of Everything; NB-IoT has the following characteri...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is: the present invention provides a smart meter electric energy metering device based on NB-IoT, by setting a voltage comparator and a voltage loss device, the voltage error caused by the environment is included in the metering, which solves the problem of existing neglected The problem of inaccurate measurement caused by differences in the types of electricity users has achieved the effect of eliminating errors caused by environmental factors and improving the accuracy of measurement

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