CN206505112U - A kind of multifunctional electric meter - Google Patents
A kind of multifunctional electric meter Download PDFInfo
- 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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- microcontroller
- power supply
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- Arrangements For Transmission Of Measured Signals (AREA)
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
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.
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 |
Family
ID=59840326
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 (3)
| 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 |
| CN112885669A (en) * | 2021-02-07 | 2021-06-01 | 深圳国鑫电力设备制造有限公司 | Improved intelligent plastic shell air switch |
-
2017
- 2017-02-22 CN CN201720161234.3U patent/CN206505112U/en not_active Expired - Fee Related
Cited By (3)
| 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 |
| CN112885669A (en) * | 2021-02-07 | 2021-06-01 | 深圳国鑫电力设备制造有限公司 | Improved intelligent plastic shell air switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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 |