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Power meter circuit

A technology of electric energy meters and circuits, which is applied in the direction of measuring electric variables, measuring devices, instruments, etc., can solve the problems of unstable signal transmission, large use place restrictions, single communication mode of electric energy meters, etc., and achieves simple structure, low price, Strong anti-interference ability

Pending Publication Date: 2017-08-18
HENGYE ELECTRONICS JIAXING CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an electric energy meter with multiple communication methods in order to solve the problems of the single communication mode of the current electric energy meter, the limitation of the place of use, and the unstable signal transmission.

Method used

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Embodiment Construction

[0025] The technical solutions of the present invention will be further described and illustrated through specific examples below.

[0026] Such as figure 1 , Figure 5As shown, an electric energy meter circuit includes a main control circuit, a metering circuit, a carrier communication interface circuit, an infrared communication circuit, a 485 communication circuit and a data storage circuit, a metering circuit, a carrier communication interface circuit, an infrared communication circuit, a 485 communication circuit and The data storage circuit is connected to the main control circuit; the metering circuit includes a metering chip U6, a current sampling circuit and a voltage sampling circuit; the current adopting circuit includes a live wire sampling circuit and a neutral wire sampling circuit; Connect with metering chip U6; the 485 communication circuit includes optocoupler OPT1, optocoupler OPT2 and RS485 chip U4, the signal receiving end RX485 is connected with one end o...

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Abstract

The invention provides a power meter circuit which comprises a main control circuit, a metering circuit, a carrier communication interface circuit, an infrared communication circuit, a 485 communication circuit, and a data storage circuit. The metering circuit, the carrier communication interface circuit, the infrared communication circuit, the 485 communication circuit and the data storage circuit are connected to the main control circuit. The metering circuit comprises a metering chip U6, a current sampling circuit, and a voltage sampling circuit. The current sampling circuit comprises a live line sampling circuit and a zero line sampling circuit. The live line sampling circuit, the zero line sampling circuit and the voltage sampling circuit are connected to the metering chip U6. The 485 communication circuit comprises an optocoupler OPT1, an optocoupler OPT2 and an RS485 chip U4. A signal receiving end RX485 is connected to one end of a resistor R89 and a triode collector in the optocoupler OPT1, and a triode emitter in the optocoupler OPT1 is grounded. According to the power meter circuit, a power meter has multiple communication modes and can be applied to different environmental requirements.

Description

technical field [0001] The invention belongs to the technical field of electronic electric meters, and in particular relates to an electric energy meter circuit. Background technique [0002] The electric energy meter is an instrument used to measure electric energy. The current mainstream products of the electric energy meter industry are already in the stage of rapid development internationally. The world, including developed economies and developing countries, is upgrading electric energy meters to adapt to the current situation of the entire world. Variety. One is the global requirement of energy conservation and emission reduction, which requires precise measurement of energy, so as to promote the control of electricity consumption by various power consumers according to the change of energy, and change the habit of electricity consumption; the second is to adapt to the requirements of modernization and informatization of power enterprise management, through As a node ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R11/24G01R11/02
CPCG01R11/02G01R11/24
Inventor 胡萌傅亮孙林忠余武军
Owner HENGYE ELECTRONICS JIAXING CITY