CN206505112U - A kind of multifunctional electric meter - Google Patents

A kind of multifunctional electric meter Download PDF

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Publication number
CN206505112U
CN206505112U CN201720161234.3U CN201720161234U CN206505112U CN 206505112 U CN206505112 U CN 206505112U CN 201720161234 U CN201720161234 U CN 201720161234U CN 206505112 U CN206505112 U CN 206505112U
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CN
China
Prior art keywords
circuit
voltage
microcontroller
phase
communication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201720161234.3U
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Chinese (zh)
Inventor
张荣康
蔡娇娇
张娟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hefei Hengbang Power Protection Equipment Co Ltd
Original Assignee
Hefei Hengbang Power Protection Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hefei Hengbang Power Protection Equipment Co Ltd filed Critical Hefei Hengbang Power Protection Equipment Co Ltd
Priority to CN201720161234.3U priority Critical patent/CN206505112U/en
Application granted granted Critical
Publication of CN206505112U publication Critical patent/CN206505112U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model is related to a kind of multifunctional electric meter, including housing, the LCD display and operation button being arranged on housing, power supply binding post, three-phase current input terminal, three-phase voltage input terminal, electrical energy pulse output port, communication interface and the Switching Power Supply and control mainboard for being arranged on enclosure interior, control mainboard is provided with current sampling circuit, voltage sample circuit, ic for energy metering, microcontroller, switching value input circuit, switching value output circuit, long-distance communication circuit, current sampling circuit and voltage sample circuit are connected with ic for energy metering, ic for energy metering connects microcontroller by SPI data/address bus, long-distance communication circuit is connected with communication interface, button is operated to connect the I/O mouths of microcontroller, electrical energy pulse output port connects the electrical energy pulse output port of ic for energy metering.This instrument integrates digitlization, intellectuality, networking, multiple functional, and a-table-multi-purpose can be achieved.

Description

A kind of multifunctional electric meter
Technical field
The utility model is related to electric instrument technical field, concretely relates to a kind of multifunctional electric meter.
Background technology
Improved constantly with the industrialization degree of China, the power consumption of enterprise is sharply increased, and Enterprise Power System is just Often operation just becomes particularly important.Multifunction power monitoring device obtains important application in the monitoring field of electric power system, it from The monitor mode of traditional electric power system is fundamentally changed, the operational efficiency of electric power system is substantially increased.At present, industrial each Occur different types of control system in field, the normal operation of Guarantee control system is needed in power supply process, it is necessary to using A variety of electric instruments are measured to the operating parameters of control system, such as to electric current, the measurement of voltage, to electric energy Statistics, the power budget to electronic instrument are monitored and carry out alarm etc. to out-of-limit electric energy supply, due to traditional The function of electric instrument is relatively simple, and this is accomplished by a variety of electric instruments while being monitored to control system, also causes system Wiring configuration is excessively numerous and jumbled, and operation automaticity is low, and trouble shoot and maintenance are all relatively difficult, and the loss of simultaneity factor is also big Big increase.
Utility model content
There is provided a kind of multifunction power instrument exactly for technical problem present in existing electric instrument for the utility model Table, the electric instrument can realize a-table-multi-purpose, can concentrate measurement electric current, voltage, frequency, active power, reactive power, active nothing The many kinds of parameters such as work(electric energy and power factor, so as to it is effective simplify system wiring configuration, strengthening system maintainability and Reliability.
To achieve these goals, the technical solution adopted in the utility model is, a kind of multifunctional electric meter, including shell Body, the LCD display for being arranged on housing one side and operate button, be arranged on the power supply terminals of housing another side Son, three-phase current input terminal, three-phase voltage input terminal, electrical energy pulse output port, communication interface and it is arranged on housing Internal Switching Power Supply and control mainboard, the Switching Power Supply connects control mainboard, is that whole electric instrument is powered, described Power supply binding post connecting valve power supply, the LCD display, operation button, three-phase current input terminal, three-phase voltage Input terminal, electrical energy pulse output port, communication interface are electrically connected with control mainboard, and the control mainboard takes provided with electric current It is sample circuit, voltage sample circuit, ic for energy metering, microcontroller, switching value input circuit, switching value output circuit, long-range Communicating circuit, the three-phase current input terminal is connected with current sampling circuit, and the three-phase voltage input terminal takes with voltage Sample circuit is connected, and the current sampling circuit and voltage sample circuit are connected with ic for energy metering, the electric energy metrical electricity Road by SPI data/address bus connect microcontroller, the switching value input circuit, switching value output circuit, long-distance communication circuit, LCD display is connected with microcontroller, and the long-distance communication circuit is connected with communication interface, the operation button connection micro-control The I/O mouths of device processed, the electrical energy pulse output port connects the electrical energy pulse output port of ic for energy metering.
As a kind of improvement of the present utility model, the input voltage of the Switching Power Supply is 85-270VAC, output voltage For 12VDC.
As a kind of improvement of the present utility model, the ic for energy metering is used as three-phase electricity using ATT7022E chips Can computation chip realization.
As it is of the present utility model it is a kind of improve, the microcontroller use STM32L152 chips as main control MCU with And external AT24C128 nonvolatile memory chips are realized as eeprom memory, and it is built-in on STM32L152 chips There is 8*40 sections of integrated form lcd driver.
As a kind of improvement of the present utility model, the current sampling circuit includes current transformer, the voltage sampling Circuit includes voltage transformer, and the current transformer uses ZMCT102 micro-transformer of current, and its specified input current is 5A, output-current rating is 2.5mA, and the voltage transformer uses ZMPT107 Micro-Transformer of Voltage, its specified input current For 2mA, output-current rating is 2mA.
As a kind of improvement of the present utility model, the long-distance communication circuit includes RS485 communication modules and ether Netcom Believe module, the communication interface includes RS485 data communication interfaces and RJ45 network interfaces, the RS485 data communication interfaces It is connected with RS485 communication modules, the RJ45 network interfaces are connected with ethernet communication module, the ethernet communication module is adopted Realized with the integrated IC of DM9000AEP/CEP.
Relative to prior art, the electric instrument overall construction design that the utility model is proposed is ingenious, dismounting assembling dimension Repair replacing convenient, cost is relatively low, measurement electrical parameter species is more, measurement accuracy is high, reasonable in design, install convenient, security, Reliability and strong interference immunity, the electric instrument are a kind of with programmable functions, automatic measurement, LCD liquid crystal displays, electric energy The intelligent three-phase comprehensive power param eter supervision instrument that the functions such as cumulative and digital remote communication are integrated, it can be by three-phase alternating current Electricity is converted to normalized digital quantity by linear relationship, integrates digitlization, intellectuality, networking, make measurement process and Data Analysis Services realize automation, reduce human error, can substitute comprehensively electric parameters transducer, electric energy meter, digital displaying meter and The instruments such as data acquisition unit, can effectively improve integration degree, the reliability of electric power system parameter monitoring, LCD display Using giant-screen segment encode liquid crystal display, it is easy to observe and records.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is schematic block circuit diagram of the present utility model.
Fig. 3 is that the circuit that current sampling circuit of the present utility model and voltage sample circuit are connected with ic for energy metering is former Reason figure.
In figure:1- housings, 2-LCD display screens, 3- operation buttons.
Embodiment
In order to deepen, to understanding and cognition of the present utility model, the utility model to be further described below in conjunction with the accompanying drawings And introduction.
Such as Fig. 1-Fig. 3, a kind of multifunctional electric meter, including housing 1, the LCD display 2 for being arranged on the one side of housing 1 It is defeated with operation button 3, the power supply binding post for being arranged on the another side of housing 1, three-phase current input terminal, three-phase voltage Enter terminal, electrical energy pulse output port, communication interface and the Switching Power Supply and control mainboard being arranged on inside housing 1, it is described Switching Power Supply connects control mainboard, is that whole electric instrument is powered, the power supply binding post connecting valve power supply, The LCD display 2, operation button 3, three-phase current input terminal, three-phase voltage input terminal, electrical energy pulse output port, Communication interface is electrically connected with control mainboard, and the control mainboard is provided with current sampling circuit, voltage sample circuit, electric energy meter Measure circuit, microcontroller, switching value input circuit, switching value output circuit, long-distance communication circuit, the three-phase current input Son is connected with current sampling circuit, and the three-phase voltage input terminal is connected with voltage sample circuit, the current sampling circuit It is connected with voltage sample circuit with ic for energy metering, the ic for energy metering connects microcontroller by SPI data/address bus Device, the switching value input circuit, switching value output circuit, long-distance communication circuit, LCD display are connected with microcontroller, The long-distance communication circuit is connected with communication interface, and the operation button connects the I/O mouths of microcontroller, and the electrical energy pulse is defeated Exit port connects the electrical energy pulse output port of ic for energy metering.This multifunctional electric meter integrally uses modularized design, The design requirement of high reliability multifunction power monitoring device is suitable for, the instrument can record the selection before last power-off automatically Information, and the automatic information for showing last time when being powered next time, can be different by operating button to carry out selection display when using Display information, with easy for installation, wiring is simple, easy to maintenance, field-programmable sets input parameter, multiple functional, logical With property is good, precision is high, processing speed is fast, the spy such as the data network remote transmission of operation of power networks data and instrument running status Point, can directly replace the auxiliary unit of conventional electric power transmitter, measurement indicating meter, electric energy measurement instrument and correlation, as A kind of advanced intelligent, digitized electric power system front-end collection element, can be widely applied to various control systems, power transformation In station automatic, distribution network automated, cell power monitoring, intelligent building and switch cubicle, and industry difference PLC, work can be completed The networking of industry control computer system.
These, it is preferred to, the current sampling circuit includes current transformer, and the voltage sample circuit includes voltage Transformer, the current transformer uses ZMCT102 micro-transformer of current, and its specified input current is 5A, rated output electricity Flow for 2.5mA, the voltage transformer uses ZMPT107 Micro-Transformer of Voltage, and its specified input current is 2mA, specified defeated Go out electric current for 2mA.
It may further be preferable that the ic for energy metering is real as three-phase electrical energy computation chip using ATT7022E chips It is existing, it is adaptable to the application scenario of phase three-wire three and three-phase and four-line, the integrated chip multichannel second order sigma-delta ADC, ginseng Examine the circuit, energy such as potential circuit and all power, energy, virtual value, power factor and the Digital Signal Processing of frequency measurement Enough measure each phase and close active power, reactive power, apparent energy, active energy and the quadergy of phase, while can also survey The parameters such as each phase current, voltage effective value, power factor, phase angle, frequency are measured, three-phase compound tariff multifunction power instrument is fully met The demand of table.
It is even furthermore preferable that the microcontroller is used as main control MCU and external using STM32L152 chips AT24C128 nonvolatile memory chips realize that STM32 Series of MCU has price low as eeprom memory, Performance is high, the low advantage of power consumption, and 8*40 sections of integrated form lcd driver is built-in with STM32L152 chips, it is not necessary to outer The function that driving LCD display can be achieved in lcd driver is connect, STM32L152 chips further provided with abundant periphery and set in addition For interface, conventional interface such as USART, IIC, SPI, ADC and GPIO etc. are supported.
It is even furthermore preferable that the long-distance communication circuit includes RS485 communication modules and ethernet communication module, institute Stating communication interface includes RS485 data communication interfaces and RJ45 network interfaces, and the RS485 data communication interfaces lead to RS485 Believe that module is connected, the RJ45 network interfaces are connected with ethernet communication module, the ethernet communication module is used The integrated IC of DM9000AEP/CEP are realized.The long-distance communication circuit uses MODBUS communication transport protocols, because electric instrument should It is on the one hand total using the ADM2483 half-duplex isolated forms RS485 of ADI companies for one-to-many and long haul communication occasion Line transceiver chip designs RS485 communication modules, and reliable and stable DATEL, and antijamming capability can be achieved By force;On the other hand design the ethernet communication module of realization to use cooperatively using the integrated IC of DM9000AEP/CEP, effectively realize The real-time monitoring of the quality of power supply of electric instrument and remote control.
It is even furthermore preferable that the input voltage of the Switching Power Supply is 85-270VAC, output voltage is 12VDC, can Suitable for the application scenario of various different electric power systems.
Technological means disclosed in the utility model scheme is not limited only to the technological means disclosed in above-mentioned embodiment, also Including being combined constituted technical scheme by above technical characteristic.It should be pointed out that for the ordinary skill of the art For personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and moistened Decorations are also considered as protection domain of the present utility model.

Claims (6)

1. a kind of multifunctional electric meter, it is characterised in that:Including housing, it is arranged on LCD display and the behaviour of housing one side Make button, the power supply binding post for being arranged on housing another side, three-phase current input terminal, three-phase voltage input Son, electrical energy pulse output port, communication interface and the Switching Power Supply and control mainboard that are arranged on enclosure interior, the switch electricity Source connects control mainboard, is that whole electric instrument is powered, the power supply binding post connecting valve power supply is described LCD display, operation button, three-phase current input terminal, three-phase voltage input terminal, electrical energy pulse output port, communication connect Mouth is electrically connected with control mainboard, and the control mainboard is provided with current sampling circuit, voltage sample circuit, electric energy metrical electricity Road, microcontroller, switching value input circuit, switching value output circuit, long-distance communication circuit, the three-phase current input terminal with Current sampling circuit is connected, and the three-phase voltage input terminal is connected with voltage sample circuit, the current sampling circuit and electricity Pressure sample circuit is connected with ic for energy metering, and the ic for energy metering connects microcontroller, institute by SPI data/address bus Switching value input circuit, switching value output circuit, long-distance communication circuit, LCD display is stated with microcontroller to be connected, it is described remote Journey communicating circuit is connected with communication interface, and the operation button connects the I/O mouths of microcontroller, the electrical energy pulse output port Connect the electrical energy pulse output port of ic for energy metering.
2. a kind of multifunctional electric meter as claimed in claim 1, it is characterised in that the current sampling circuit includes electric current Transformer, the voltage sample circuit includes voltage transformer, and the current transformer uses the miniature Current Mutual Inductances of ZMCT102 Device, the voltage transformer uses ZMPT107 Micro-Transformer of Voltage.
3. a kind of multifunctional electric meter as claimed in claim 1, it is characterised in that the ic for energy metering is used ATT7022E chips are realized as three-phase electrical energy computation chip.
4. a kind of multifunctional electric meter as claimed in claim 2 or claim 3, it is characterised in that the microcontroller is used STM32L152 chips are real as eeprom memory as main control MCU and external AT24C128 nonvolatile memory chips It is existing, and 8*40 sections of integrated form lcd driver is built-in with STM32L152 chips.
5. a kind of multifunctional electric meter as claimed in claim 4, it is characterised in that the long-distance communication circuit includes RS485 communication modules and ethernet communication module, the communication interface includes RS485 data communication interfaces and RJ45 networks connect Mouthful, the RS485 data communication interfaces are connected with RS485 communication modules, the RJ45 network interfaces and ethernet communication module It is connected, the ethernet communication module is realized using the integrated IC of DM9000AEP/CEP.
6. a kind of multifunctional electric meter as claimed in claim 5, it is characterised in that the input voltage of the Switching Power Supply is 85-270VAC, output voltage is 12VDC.
CN201720161234.3U 2017-02-22 2017-02-22 A kind of multifunctional electric meter Expired - Fee Related CN206505112U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720161234.3U CN206505112U (en) 2017-02-22 2017-02-22 A kind of multifunctional electric meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720161234.3U CN206505112U (en) 2017-02-22 2017-02-22 A kind of multifunctional electric meter

Publications (1)

Publication Number Publication Date
CN206505112U true CN206505112U (en) 2017-09-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201720161234.3U Expired - Fee Related CN206505112U (en) 2017-02-22 2017-02-22 A kind of multifunctional electric meter

Country Status (1)

Country Link
CN (1) CN206505112U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109001495A (en) * 2018-07-12 2018-12-14 苏州惠琪特电子科技有限公司 A kind of outdoor multifunctional electric instrument
CN111025054A (en) * 2019-12-03 2020-04-17 天津送变电工程有限公司 Multifunctional wireless relay protection debugging auxiliary instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109001495A (en) * 2018-07-12 2018-12-14 苏州惠琪特电子科技有限公司 A kind of outdoor multifunctional electric instrument
CN111025054A (en) * 2019-12-03 2020-04-17 天津送变电工程有限公司 Multifunctional wireless relay protection debugging auxiliary instrument

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170919

Termination date: 20180222

CF01 Termination of patent right due to non-payment of annual fee