NB-IoT-based fast-assembly intelligent electric meter

Abstract

The invention discloses a fast-assembly type intelligent electric meter based on NB-IoT. During installation, the electric meter is placed in the electric meter box, the adjusting rotating disc is rotated by 180 degrees, the driving adjusting block is driven to rotate, and the driven adjusting block is promoted to be connected with the clamping groove in the electric meter box, so installation can be easily completed, the electric meter is also easy to disassemble during maintenance, the difficulty of installing the electric meter by personnel is reduced, and the working efficiency of the personnel can be greatly improved; electric signals are sampled through a sampling manganese-copper sheet, electric parameters such as current, voltage and phase are obtained, active power and reactive power are calculated, and results are sent to a communication control module and a display module, so wireless long-distance low-cost communication of the electric meter becomes possible, the communication speed and reliability of the electric meter are improved, intermediate equipment such as a collector and a concentrator is saved, and the equipment cost and the communication use cost are reduced.

Description

technical field [0001] The present invention relates to the technical field of smart electric meters, and more specifically, relates to a quick-install smart electric meter based on NB-IoT. Background technique [0002] Smart meters are one of the basic equipment for data collection in smart grids (especially smart distribution networks). In addition to the basic power consumption measurement function of traditional electric energy meters, smart meters also have two-way multi-rate metering functions, user-side control functions, and two-way data communication with multiple data transmission modes in order to adapt to the use of smart grids and new energy. Function, anti-theft function and other intelligent functions. [0003] The smart meter communication method is mainly divided into carrier communication system and GPRS communication system. The carrier communication method uses the meter to transmit the data from the power line to the concentrator in the station area thr...

AI Technical Summary

Problems solved by technology

[0003] The smart meter communication method is mainly divided into carrier communication system and GPRS communication system. The carrier communication method uses the meter to transmit the data from the power line to the concentrator in the station area through the carrier module, and then transmits the data through the GPRS module of the concentrator. Back to the master station, the problem of the carrier communication method is that the power line has its own inherent pulse interference. In each AC cycle, there are two peaks, which cause high cuts to the carrier signal and seriously affect the signal transmission quality; GPRS communication uses The GPRS module transmits the meter data directly to the master station through the GPRS signal, but this communication method has problems such as high cost, high power consumption, and poor signal

[0004] When the existing smart meter is installed, it is necessary to use a screwdriver to install the smart meter and the meter box through screws. Although this installation method is relatively stable, when the meter fails, the maintenance master needs to use a screwdriver to remove all the screws at the four corners of the meter. It can be overhauled only when it is down, and a lot of time will be wasted during installation and overhaul, which is not conducive to improving work efficiency

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