CN202794284U

CN202794284U - Multifunctional intelligent electric power meter

Info

Publication number: CN202794284U
Application number: CN 201220520328
Authority: CN
Inventors: 张兴文; 何智晖; 陈娜娜
Original assignee: LANZHOU HAIHONG TECHNOLOGY Co Ltd
Current assignee: LANZHOU HAIHONG TECHNOLOGY Co Ltd
Priority date: 2012-10-11
Filing date: 2012-10-11
Publication date: 2013-03-13
Anticipated expiration: 2022-10-11

Abstract

The utility model discloses a multifunctional intelligent electric power meter, comprising a voltage transformer, a current transformer, a voltage parameter acquisition module, a current parameter acquisition module, an electric quantity metering module, an electric energy pulse detection module, a correction parameter storage module, an alarm output module, a man-machine interaction module, a communication module, a power supply transition module, and a one-chip microcomputer. Voltage signals acquired by the voltage transformer are transmitted sequentially through the voltage parameter acquisition module and the electric quantity metering module to the one-chip microcomputer. Current signals acquired by the current transformer are transmitted sequentially through the current parameter acquisition module and the electric quantity metering module to the one-chip microcomputer. The correction parameter storage module, the man-machine interaction module, and the communication module are all electrically connected with the one-chip microcomputer. An output terminal of the electric quantity metering module is connected with an input terminal of the electric energy pulse detection module. The power supply transition module can provide direct-current power supply. The multifunctional intelligent electric power meter is advantaged by being all-round in function, convenient in installation, and low in installation cost simultaneously.

Description

The multifunctional intellectual electric instrument

Technical field

The utility model relates to the apparatus of electrical monitoring equipment field, particularly, relates to a kind of multifunctional intellectual electric instrument.

Background technology

Existing electric instrument model is various, but function ratio is more single, mostly only has certain individual event or multinomial electrical measurement function, and such as reometer, voltage table, electric current and voltage combination table etc., electrical measurement is incomplete.And great majority do not possess full electrical measurement and function of measuring.Existing multifunction instrument has been integrated also multinomial electrical measurement and metering.But electrical measurement and electric energy metrical are all incomplete.And existing common multifunction instrument communication interface is single, field adjustable, and inconvenience is installed in comparatively inconvenience during the Centralized Monitoring networking, and installation cost is larger.

The utility model content

The purpose of this utility model is, for the problems referred to above, proposes a kind of multifunctional intellectual electric instrument, advantage easy for installation with the complete while of practical function, that installation cost is low.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of multifunctional intellectual electric instrument, comprise voltage transformer (VT), current transformer, the voltage parameter acquisition module, the current parameters acquisition module, module for metering electric quantity, the electrical energy pulse detection module, the correction parameter memory module, the alarm output module, human-computer interaction module, communication module, power transfer module and single-chip microcomputer, the voltage signal that described voltage transformer (VT) gathers is successively through the voltage parameter acquisition module, module for metering electric quantity transfers to single-chip microcomputer, the current signal that described current transformer gathers is successively through the current parameters acquisition module, module for metering electric quantity transfers to single-chip microcomputer, described correction parameter memory module, human-computer interaction module and communication module all are connected electrically on the single-chip microcomputer, the output terminal of described module for metering electric quantity is connected to the input end of electrical energy pulse detection module, and described power transfer module provides direct supply.

Further, described communication module comprises RS485, RS232 communication interface at least.

Further, described single-chip microcomputer adopts the STM8S208 single-chip microcomputer.

Further, described module for metering electric quantity adopts accurate ATT7026A chip.

The technical solution of the utility model, adopt highly reliable MCU design, and adopt the high-accuracy voltage current sensor, can measure all electric weight in the three phase network, such as three-phase voltage, electric current, active power, reactive power, power factor, frequency, active energy, reactive energy etc.And provide extendability more intense communication module, reached the purpose that the complete while of test function is easy for installation, installation cost is low.

Description of drawings

Fig. 1 is the described multifunctional intellectual electric instrument of the utility model embodiment electrical principle structural drawing;

Fig. 2 to Figure 29 is the described multifunctional intellectual electric instrument of the utility model embodiment electrical circuit diagram;

Screen display interface when Figure 30 to Figure 35 is the described multifunctional intellectual electric instrument test of the utility model embodiment.

Embodiment

Below in conjunction with accompanying drawing preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the utility model, and be not used in restriction the utility model.

As shown in Figure 1, the multifunctional intellectual electric instrument, comprise voltage transformer (VT), current transformer, the voltage parameter acquisition module, the current parameters acquisition module, module for metering electric quantity, the electrical energy pulse detection module, the correction parameter memory module, the alarm output module, human-computer interaction module, communication module, power transfer module and single-chip microcomputer, the voltage signal that voltage transformer (VT) gathers is successively through the voltage parameter acquisition module, module for metering electric quantity transfers to single-chip microcomputer, the current signal that current transformer gathers is successively through the current parameters acquisition module, module for metering electric quantity transfers to single-chip microcomputer, the correction parameter memory module, human-computer interaction module and communication module all are connected electrically on the single-chip microcomputer, the output terminal of module for metering electric quantity is connected to the input end of electrical energy pulse detection module, and power transfer module provides direct supply.Communication module comprises RS485, RS232 communication interface etc.Single-chip microcomputer adopts the STM8S208 single-chip microcomputer.Module for metering electric quantity adopts accurate ATT7026A chip.

The multifunctional intellectual electric instrument can be measured all electric weight in the three phase network: such as three-phase voltage, three-phase current, phase-splitting active power, close phase active power, split-phase reactive power, close the phase reactive power, close the phase power factor, the phase-splitting active energy, close phase active energy, phase-splitting reactive energy, close what mains frequency of phase reactive energy; And adopted special-purpose computation chip, and can reach 0.2 grade by digital calibration electrical measurement precision, meritorious precision can reach 0.5S, and idle precision can reach 1 grade.Adopt the LCD19264 liquid crystal display, full Chinese display interface, the operation such as greatly facilitate inquiry, arrange.Provide two kinds of communication interfaces of RS485, RS232 can supply user selection and host computer communication mode.Voltage, electric current transfinite and have sound and light of alarm.Have 2 group relay output interfaces, be used for connecing the alarm output device.Have active energy pulse and reactive energy pulse output end mouth, the output meter constant is 3200imp/KWh.The ammeter pulse can adopt the mode of LED flicker that visible electricity consumption indicator signal is provided.

It should be noted that at last: the above only is preferred embodiment of the present utility model, be not limited to the utility model, although with reference to previous embodiment the utility model is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. multifunctional intellectual electric instrument, it is characterized in that, comprise voltage transformer (VT), current transformer, the voltage parameter acquisition module, the current parameters acquisition module, module for metering electric quantity, the electrical energy pulse detection module, the correction parameter memory module, the alarm output module, human-computer interaction module, communication module, power transfer module and single-chip microcomputer, the voltage signal that described voltage transformer (VT) gathers is successively through the voltage parameter acquisition module, module for metering electric quantity transfers to single-chip microcomputer, the current signal that described current transformer gathers is successively through the current parameters acquisition module, module for metering electric quantity transfers to single-chip microcomputer, described correction parameter memory module, human-computer interaction module and communication module all are connected electrically on the single-chip microcomputer, the output terminal of described module for metering electric quantity is connected to the input end of electrical energy pulse detection module, and described power transfer module provides direct supply.

2. multifunctional intellectual electric instrument according to claim 1 is characterized in that, described communication module comprises RS485, RS232 communication interface at least.

3. multifunctional intellectual electric instrument according to claim 1 and 2 is characterized in that, described single-chip microcomputer adopts the STM8S208 single-chip microcomputer.

4. multifunctional intellectual electric instrument according to claim 1 and 2 is characterized in that, described module for metering electric quantity adopts accurate ATT7026A chip.