CN203337709U

CN203337709U - Intelligent electric instrument

Info

Publication number: CN203337709U
Application number: CN2013204095641U
Authority: CN
Inventors: 张兴文; 何智晖
Original assignee: LANZHOU HAIHONG TECHNOLOGY Co Ltd
Current assignee: LANZHOU HAIHONG TECHNOLOGY Co Ltd
Priority date: 2013-07-10
Filing date: 2013-07-10
Publication date: 2013-12-11
Anticipated expiration: 2023-07-10

Abstract

The utility model discloses an intelligent electric instrument. The intelligent electric instrument comprises a liquid-crystal display screen, a communication module, a single chip, an alarm output module, a correction parameter storage module, an electric quantity metering module, a switching quantity detection module, a voltage parameter acquisition module, a current parameter acquisition module, a voltage transformer module, a power supply conversion module and a current transformer module. The intelligent electric instrument is capable of measuring a three-phase voltage, a three-phase current, a split-phase active power, a combined-phase active power, a split-phase reactive power, a combined-phase reactive power, a combined-phase power factor, a split-phase active electric energy, a combined-phase active electric energy, a split-phase reactive electric energy, a combined-phase reactive electric energy, a power grid frequency and the like in a three-phase power grid, thus achieving the purposes of high accuracy, intellectualization and complete functions.

Description

Intelligent electric instrument

Technical field

The utility model relates to the power monitoring field, particularly, relates to a kind of intelligent electric instrument.

Background technology

The multifunctional intellectual electric instrument is for the high precision of the application scenario design of the power monitorings such as electric system, industrial and mining enterprises, Based Intelligent Control, metering examination, full electric weight intelligent power distribution monitoring device.Synthetical collection for 50/60Hz electric power system electrical parameter; Measure and show three-phase voltage, three-phase current, active power, reactive power, power factor, frequency, active energy and reactive energy.But existing electric instrument only possesses the acquisition and display function of analog electrical parameter, there is no switch value input interface and relay output interface, function ratio is more single.

The utility model content

The purpose of this utility model is, for the problems referred to above, proposes a kind of intelligent electric instrument, to realize high precision, intellectuality and multiple functional advantage.

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

A kind of intelligent electric instrument, comprise LCDs, communication module, single-chip microcomputer, the alarm output module, the correction parameter memory module, module for metering electric quantity, the switching value module, the voltage parameter acquisition module, the current parameters acquisition module, the voltage transformer (VT) module, power transfer module summation current transformer module, described LCDs, the input end of communication module and alarm output module all is connected electrically in the output terminal of single-chip microcomputer, the output terminal of described switching value module is connected electrically in the input end of single-chip microcomputer, described correction parameter memory module and module for metering electric quantity all with the single-chip microcomputer two-way communication, the output terminal of described voltage transformer (VT) module is connected electrically in the input end of voltage parameter acquisition module, the output terminal of described voltage parameter acquisition module is connected electrically in the input end of module for metering electric quantity, the output terminal of described current transformer module is connected electrically in the input end of current parameters acquisition module, the output terminal of described current parameters acquisition module is connected electrically in the input end of module for metering electric quantity, described power transfer module provides direct supply.

Further, the communication chip of described communication module adopts the MAX481 chip.

Further, the computation chip in described module for metering electric quantity adopts the ATT7026A chip.

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

Further, described LCDs adopts the LCD128128 liquid crystal display.

Further, described switching value module comprises 4 way switch amount fault detect input interfaces.

Further, the output terminal of described alarm output module is electrically connected to 1 group relay output interface.

The technical solution of the utility model has following beneficial effect:

The technical solution of the utility model, by single-chip microcomputer is set, and by Single-chip Controlling alarm output module, the correction parameter memory module, module for metering electric quantity, the switching value module, the voltage parameter acquisition module, the current parameters acquisition module, voltage transformer (VT) module summation current transformer module, can measure the three-phase voltage in three phase network, 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 the phase active energy, the phase-splitting reactive energy, close the phase reactive energy, mains frequency etc., reached high precision, intelligent and multiple functional purpose.

The accompanying drawing explanation

The theory diagram that Fig. 1 is the described intelligent electric instrument of the utility model embodiment;

The electronic circuitry that Fig. 2 to Figure 40 is the described intelligent electric instrument of the utility model embodiment;

Figure 40 to Figure 46 is intelligent electric instrument test display interface schematic diagram.

Embodiment

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

As shown in Figure 1, a kind of intelligent electric instrument, comprise LCDs, communication module, single-chip microcomputer, the alarm output module, the correction parameter memory module, module for metering electric quantity, the switching value module, the voltage parameter acquisition module, the current parameters acquisition module, the voltage transformer (VT) module, power transfer module summation current transformer module, LCDs, the input end of communication module and alarm output module all is connected electrically in the output terminal of single-chip microcomputer, the output terminal of switching value module is connected electrically in the input end of single-chip microcomputer, correction parameter memory module and module for metering electric quantity all with the single-chip microcomputer two-way communication, the output terminal of voltage transformer (VT) module is connected electrically in the input end of voltage parameter acquisition module, the output terminal of voltage parameter acquisition module is connected electrically in the input end of module for metering electric quantity, the output terminal of current transformer module is connected electrically in the input end of current parameters acquisition module, the output terminal of current parameters acquisition module is connected electrically in the input end of module for metering electric quantity, and power transfer module provides direct supply.

Wherein, the communication chip of communication module adopts the MAX481 chip.Computation chip in module for metering electric quantity adopts the ATT7026A chip.Single-chip microcomputer adopts the STM8S208 single-chip microcomputer.LCDs adopts the LCD128128 liquid crystal display.The switching value module comprises 4 way switch amount fault detect input interfaces.The output terminal of alarm output module is electrically connected to 1 group relay output interface.

The technical solution of the utility model adopts special-purpose computation chip, by digital calibration electrical measurement precision, can reach 0.2 grade, and meritorious precision can reach 0.5S, and idle precision can reach 1 grade.

Adopt the LCD128128 liquid crystal display, full Chinese display interface, the operation such as greatly facilitate inquiry, arrange.Provide the RS485 communication interface to select and the host computer communication mode for the user.

The electronic circuitry that Fig. 2 to Figure 12 is LCDs, the electronic circuitry that Figure 13 to Figure 16 is communication module, the electronic circuitry that Figure 17 to Figure 21 is input keyboard, the electronic circuitry that Figure 22 to Figure 34 is module for metering electric quantity, voltage parameter acquisition module, current parameters acquisition module, switching value module and alarm output module, the electronic circuitry that Figure 35 to Figure 40 is single-chip microcomputer.

What Figure 41 was that display screen shows is three-phase alternating voltage and electric current, Figure 42 is phase-splitting active power, and close phase active power, Figure 43 is split-phase reactive power, and close the phase reactive power, Figure 44 is the phase-splitting active energy and closes the phase active energy, and Figure 45 is the phase-splitting reactive energy and closes the phase reactive energy, and Figure 46 is system parameter setting.

Finally it should be noted that: the foregoing is only 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, its technical scheme that still can put down in writing aforementioned each embodiment is modified, or 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., within all should being included in protection domain of the present utility model.

Claims

1. an intelligent electric instrument, is characterized in that, comprises LCDs, communication module, single-chip microcomputer, the alarm output module, the correction parameter memory module, module for metering electric quantity, the switching value module, the voltage parameter acquisition module, the current parameters acquisition module, the voltage transformer (VT) module, power transfer module summation current transformer module, described LCDs, the input end of communication module and alarm output module all is connected electrically in the output terminal of single-chip microcomputer, the output terminal of described switching value module is connected electrically in the input end of single-chip microcomputer, described correction parameter memory module and module for metering electric quantity all with the single-chip microcomputer two-way communication, the output terminal of described voltage transformer (VT) module is connected electrically in the input end of voltage parameter acquisition module, the output terminal of described voltage parameter acquisition module is connected electrically in the input end of module for metering electric quantity, the output terminal of described current transformer module is connected electrically in the input end of current parameters acquisition module, the output terminal of described current parameters acquisition module is connected electrically in the input end of module for metering electric quantity, described power transfer module provides direct supply.

2. intelligent electric instrument according to claim 1, is characterized in that, the communication chip of described communication module adopts the MAX481 chip.

3. intelligent electric instrument according to claim 1, is characterized in that, the computation chip in described module for metering electric quantity adopts the ATT7026A chip.

4. intelligent electric instrument according to claim 1, is characterized in that, described single-chip microcomputer adopts the STM8S208 single-chip microcomputer.

5. intelligent electric instrument according to claim 1, is characterized in that, described LCDs adopts the LCD128128 liquid crystal display.

6. intelligent electric instrument according to claim 1, is characterized in that, described switching value module comprises 4 way switch amount fault detect input interfaces.

7. intelligent electric instrument according to claim 1, is characterized in that, the output terminal of described alarm output module is electrically connected to 1 group relay output interface.