An anti-bottom plate drilling hole electricity stealing watt-hour meter

Abstract

The invention belongs to the technical field of electric energy meter equipment, and in particular relates to an electric energy meter preventing bottom plate hole drilling electricity stealing. The main structure comprises a detection circuit board, a through hole, a conductor, a main circuit board, a through-pillar, a screw, a flat washer and an electric energy meter casing. On the basis of a power supply module, a single-chip module and a peripheral circuit module of an original electric energy meter, the detection circuit board which is provided with a sensor and is connected with the maincircuit board is added on the bottom casing of the electric energy meter. High and low levels of an electrical signal are detected between the main circuit board and the detection circuit board to determine whether electricity is stolen. The technology of the combination of the single-chip, the peripheral circuit and a printed circuit board is used. The detection method of hardware and software is used to solve the problem that electricity stealing is difficult to be discovered due to hole drilling in the bottom plate of the electric energy meter. The circuit design of the detection circuit board can be applied to the structures of different electric energy meter models. The electric energy meter preventing bottom plate hole drilling electricity stealing has the advantages of simple structure, low production cost, sensitive and reliable detection, high practicability and wide application range, and is suitable for industrial mass production. The software module of the electric energymeter does not occupy resources.

Description

Technical field: [0001] The invention belongs to the technical field of electric energy meter equipment, and in particular relates to a bottom plate drilling-proof electric energy stealing electric energy meter, which can timely and accurately detect the occurrence of electricity stealing behavior with a simple structure and a sensitive response ability. Background technique: [0002] Electric energy meter is an instrument used to measure electric energy, also known as watt-hour meter, fire meter, kilowatt-hour meter, which refers to an instrument for measuring various electrical quantities; electronic electric energy meter is used for real-time sampling of user power supply voltage and current, using special Electric energy meter integrated circuit, which processes and multiplies the sampled voltage and current signals into a pulse output proportional to the electric energy, which is displayed through a meter or a digital display. The electronic energy meter has powerful fun...

AI Technical Summary

Problems solved by technology

[0002] An electric energy meter is an instrument used to measure electric energy, also known as an electric watt-hour meter, a fire meter, and a kilowatt-hour meter. It refers to an instrument for measuring various electrical quantities; Electric energy meter integrated circuit, which processes the sampled voltage and current signals and multiplies them into pulse output proportional to electric energy. It is a physical device displayed by a counter or digital display; electronic electric energy meters are powerful, easy to expand, and accurate. It has the characteristics of high and stable accuracy, small starting current and flat error curve, wide frequency response range, little influence by external magnetic field, easy installation and use, and large overload capacity; electronic energy meters have obvious advantages compared with mechanical energy meters : Strong anti-stealing ability, high measurement accuracy, good load characteristics, straight error curve, strong power factor compensation performance, low power consumption, especially its flexible measurement parameters and many derivative functions; due to the application of single-chip microcomputer It injects new vitality into the energy meter, which is difficult for ordinary mechanical meters; but the early electronic energy meters also have some obvious shortcomings, such as short working life, easy to be disturbed by the outside world, and less reliable than mechanical meters. Watt-hour meter, etc.

Images