CN109166298A - Electric energy meter of new generation based on the communication of magnetic coupling and single channel power supply export technique - Google Patents
Electric energy meter of new generation based on the communication of magnetic coupling and single channel power supply export technique Download PDFInfo
- Publication number
- CN109166298A CN109166298A CN201811049685.3A CN201811049685A CN109166298A CN 109166298 A CN109166298 A CN 109166298A CN 201811049685 A CN201811049685 A CN 201811049685A CN 109166298 A CN109166298 A CN 109166298A
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- magnetic coupling
- chip
- power supply
- communication
- transformer
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/04—Arrangements for transmitting signals characterised by the use of a wireless electrical link using magnetically coupled devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
The invention discloses it is a kind of based on magnetic coupling communication and single channel power supply export technique electric energy meter of new generation.The electric energy meter includes main MCU control module, power circuit block, metering circuit module, RS485 communication module and other communications applications circuit modules.Electric energy meter innovation of new generation is that main MCU integrates magnetic coupling communication master chip, metering chip and the communication of RS485 integrated chip magnetic coupling from chip, the main end MCU and metering, and communication, power supply and the isolation at the end RS485 are completed by magnetic coupling transformer.Power module is exported by secondary three-way power before to MCU, metering, RS485, is optimized to secondary power supply all the way and is exported, only gives the main side MCU；Therefore the transformer secondary coil of power module has also been simplified to one group, and secondary commutation filter circuit is also simplified to one group.The present invention using magnetic coupling transformer and magnetic coupling chip electrical isolation characteristic, it is intended to realize the isolation of each intermodule of ammeter, high-speed communication and simplification optimized to power module, transformer.
Description
Technical field
The present invention relates to a kind of electric energy meter, more particularly to one kind based on the magnetic coupling communication technology using magnetic coupling isolating chip and
Magnetic coupling transformer completes main MCU control circuit and communication and power supply from terminal RS 485, metering module, is exported using single channel power supply
Single-phase intelligent electric energy meter of new generation, belong to electric-power metering and the communications field.
Background technique
In ammeter, often there is maloperation, electrostatic or lightning stroke wave in RS485 communication module and metering module interface section
The impact gushed etc can generate high voltage in interface end, if safe isolation, overvoltage can not pass through electricity between each module
Source and ground wire are propagated in a device, can not only damage interface chip, can also involve core chips MCU.Therefore, usually right in the industry
Each module is individually powered, and is isolated by various modes between front stage, to ensure the safety of equipment and operator.
Currently, electric energy meter is all isolated using optocoupler substantially, it is basic to realize that structure is as shown in Figure 1.Based on optocoupler
In isolation scheme, power supply needs to provide three road isolated power supplies, respectively to main MCU control circuit, RS485 telecommunication circuit, metering electricity
Road power supply；Power supply design, which needs to increase transformer winding and carries out being isolated into each road isolation module, to be powered, and is needed per winding all the way
Individual regulator rectifier circuit is provided.This results in power supply architecture complicated, and volume is big, and peripheral circuit is complicated, and PCB is laid out difficulty
Greatly, at high cost.Isolation scheme as shown in figure 1, the power supply at least needing 3 tunnels to be isolated are higher to power supply design requirement.Such optocoupler
The isolation scheme disadvantage not high there is also effective transmission speed.
Summary of the invention
The present invention is a kind of electric energy meter of new generation based on the communication of magnetic coupling and single channel power supply export technique.
The technical scheme is that using a kind of completely new magnetic coupling on the basis of fully considering electric energy meter application demand
Transmission technology, takes into account isolation power supply and isolation communication, realizes main MCU control circuit using magnetic coupling isolating chip and magnetic coupling transformer
With the power supply and communication from terminal RS 485 circuit, metering circuit；Using the single channel power supply power supply scheme of transformer single channel tap output
Form the electric energy meter solution of a new generation.Overcome optocoupler defect and multiple-channel output transformer complex process, using stabilization
Property difference defect.
It is characterized by: the main MCU of a, electric energy meter and connecting from passing through magnetic coupling isolating chip and magnetic coupling transformer between end and establishing
It connects, using the electrical isolation performance of magnetic coupling transformer, realizes main MCU and from the electrical isolation between end.B, entire electric energy meter
Power supply is supplied to main MCU by the output of power circuit single channel power supply；From the power supply of terminal circuit, magnetic coupling isolated core is passed through by the main end MCU
Piece and magnetic coupling transformer are realized using modulation /demodulation and rectifying and wave-filtering technology.
The main MCU of electric energy meter has UART interface, magnetic coupling isolation master chip is internally integrated, for completing and from end
Communication and power supply.
Described to refer to the RS485 circuit and metering circuit of ammeter from end, wherein RS485 chip interior integrates the isolation of magnetic coupling
The isolation of magnetic coupling is also integrated inside chip, metering chip from chip.
The magnetic coupling isolating chip is divided into magnetic coupling isolation master chip and the isolation of magnetic coupling from chip.Master chip is used using frequency
Rate modulation technology digital signal is sent, and realizes digital signal reception using amplitude demodulation technology；Frequency solution is used from chip
Conditioning technology realizes digital signal reception, realizes that digital signal is sent using amplitude modulation technique.
The magnetic coupling transformer completes the energy conversion of primary coil and secondary coil by flux coupled and signal passes
It is defeated.
The electrical isolation, including communication are isolated and for being electrically isolated.Communication isolation, which refers to, transmits number by magnetic coupling transformer
Signal realizes the bi-directional half-duplex asynchronous serial communication of principal and subordinate end；Refer to for electric isolution and passes through magnetic coupling transformation from end power supply by main side MCU
Device provides.
Single channel power supply output, refer to power module only provide all the way power supply to main MCU module, RS485 module and meter
Amount circuit module is no longer individually powered by power transformer, and the secondary voltage output of power module transformer is by three tunnels letter before
Change to only all the way, power module transformer secondary coil only has one group, and power module transformer secondary output current rectifying and wave filtering circuit is only
Have all the way.
Detailed description of the invention
Fig. 1: light-coupled isolation communication plan system block diagram.
Fig. 2: communication plan system block diagram is isolated in magnetic coupling.
Fig. 3: the electric energy meter block diagram of new generation based on the communication of magnetic coupling and single channel power supply export technique.
Specific embodiment
According to Fig. 3, it is as follows that specific embodiment is described in detail:
The power module of electric energy meter passes through transformer by the conversion of AC-DC power module by access 220V alternating current
Primary and secondary winding, complete alternating current to direct current supply convert, power module secondary output only all the way, transformer secondary output export around
Only one group of group, and then stable power supply is provided for main MCU control module by the rectification circuit that transformer secondary output exports.
Single channel secondary windings exports transformer, exports transformer compared to current three tunnel, and transformer device structure is simpler, makes work
Skill will be more optimized, and the performance reliability of transformer is substantially improved, and production efficiency and cost are advantageously.Power supply output only one
Road only needs current rectifying and wave filtering circuit all the way, saves the current rectifying and wave filtering circuit of other two-way output, power circuit device is less, cloth
Office's wiring is more convenient, can effectively reduce plank area, save the cost；In addition, circuit is simple, reliability is higher, and power circuit produces
Raw radiation and Conduction Interference is greatly reduced, and ammeter EMC performance is more preferable.
Main MCU control module communicates master chip by the magnetic coupling that MCU is internally integrated, and modulates the number letter of different frequency
Number, by the primary coil of magnetic coupling transformer, secondary coil and magnetic coupling and access, complete main MCU control module to from module (such as
RS485 communication module, metering communication module) signal transmission and energy transmission, from module chip RS485 chip and metering core
Piece, the magnetic coupling communication integrated respectively by chip interior complete the demodulation reception of signal, pass through magnetic coupling from the demodulation module of chip
The current rectifying and wave filtering circuit from chip interior is communicated, main MCU module is completed and, for electric energy conversion, is communicated to from module for RS485
Module, metering communication module provide stable power supply.Magnetic coupling transformer assumes responsibility for signal transmission in the whole process, energy passes
It is defeated, and ensure that the electrical physical isolation between different circuit modules.Isolation power supply mode reduces the quantity of device, effectively
Improve the reliability of whole table.
It is powered by magnetic coupling transformer isolation, saves the independent auxiliary winding isolation of traditional power frequency/switching mode power supply transformer
Power supply circuit.Bi-directional half-duplex asynchronous serial communication is realized by magnetic coupling isolating transformer, saves traditional optical coupling isolation circuit.
Magnetic coupling power supply/communication system is made of host and slave.Host refers to MCU module, and it is electrical that slave refers to that the periphery of MCU needs
The module of isolation, such as metering chip or 485 communication modules.Slave can be derivatized with multiple.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (7)
1. a kind of electric energy meter of new generation based on the communication of magnetic coupling and single channel power supply export technique.It is characterized by: a, electric energy meter master
MCU and connection is established by magnetic coupling isolating chip and magnetic coupling transformer between end, utilizes the electrical separation of magnetic coupling transformer
Can, realize main MCU and from the electrical isolation between end.B, the power supply of entire electric energy meter is mentioned by the output of power circuit single channel power supply
Supply main MCU；From the power supply of terminal circuit, by the main end MCU by magnetic coupling isolating chip and magnetic coupling transformer, using modulation /demodulation and
Rectifying and wave-filtering technology is realized.
2. the main MCU of electric energy meter as described in claim 1 has UART interface, it is internally integrated magnetic coupling isolation master chip, for completing
With the communication and power supply from end.
3. referring to the RS485 circuit and metering circuit of ammeter from end as described in claim 1, wherein RS485 chip interior is integrated
The isolation of magnetic coupling also integrates the isolation of magnetic coupling from chip inside chip, metering chip.
4. magnetic coupling isolating chip as described in claim 1 is divided into magnetic coupling isolation master chip and the isolation of magnetic coupling from chip.Master chip is adopted
It realizes that digital signal is sent with using frequency modulating technology, digital signal reception is realized using amplitude demodulation technology；It is adopted from chip
Digital signal reception is realized with frequency demodulation technique, realizes that digital signal is sent using amplitude modulation technique.
5. magnetic coupling transformer as described in claim 1 is converted by the energy that flux coupled completes primary coil and secondary coil
And signal transmission.
6. electrical isolation as described in claim 1, including communication are isolated and for being electrically isolated.Communication isolation refers to through magnetic coupling transformer
Digital signal is transmitted, realizes the bi-directional half-duplex asynchronous serial communication of principal and subordinate end；Refer to for electric isolution and passes through from end power supply by main side MCU
Magnetic coupling transformer provides.
7. single channel power supply as described in claim 1 output, refer to power module only provide all the way power supply to main MCU module, RS485
Module and metering circuit module are no longer individually powered by power transformer, and the secondary voltage of power module transformer is exported by before
Three tunnels be simplified to only all the way, power module transformer secondary coil only has one group, the rectification filter of power module transformer secondary output
Wave circuit is only all the way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811049685.3A CN109166298A (en) | 2018-09-02 | 2018-09-02 | Electric energy meter of new generation based on the communication of magnetic coupling and single channel power supply export technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811049685.3A CN109166298A (en) | 2018-09-02 | 2018-09-02 | Electric energy meter of new generation based on the communication of magnetic coupling and single channel power supply export technique |
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| CN109166298A true CN109166298A (en) | 2019-01-08 |
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| CN201811049685.3A Pending CN109166298A (en) | 2018-09-02 | 2018-09-02 | Electric energy meter of new generation based on the communication of magnetic coupling and single channel power supply export technique |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706899A (en) * | 2019-09-26 | 2020-01-17 | 青岛鼎信通讯股份有限公司 | High-speed magnetic coupling PCB transformer applied to terminal and ammeter scheme |
| CN112213555A (en) * | 2019-12-20 | 2021-01-12 | 青岛鼎信通讯股份有限公司 | Electric energy meter solution method based on high-speed magnetic isolation communication |
| CN112462134A (en) * | 2021-01-20 | 2021-03-09 | 青岛鼎信通讯股份有限公司 | Three-phase electric energy meter based on magnetic isolation technology |
| CN113009218A (en) * | 2019-12-20 | 2021-06-22 | 青岛鼎信通讯股份有限公司 | Pulse group metering protection method for electric energy meter |
| CN114353890A (en) * | 2021-12-08 | 2022-04-15 | 深圳市拓安信计控仪表有限公司 | Micro-power consumption communication circuit and electromagnetic water meter |
| CN114814355A (en) * | 2022-06-28 | 2022-07-29 | 石家庄科林电气股份有限公司 | Three-phase meter based on manganin sampling and metering method |
| CN115112947A (en) * | 2022-07-26 | 2022-09-27 | 青岛鼎信通讯股份有限公司 | Electric energy meter, communication method, device and medium of metering chip and MCU |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203689052U (en) * | 2013-11-20 | 2014-07-02 | 吴浩 | Power and relay driving circuit for electric energy meter equipped with communication module |
| CN205753990U (en) * | 2016-05-04 | 2016-11-30 | 广州顶源电子科技有限公司 | A kind of high isolation DC-DC power module |
| CN108199821A (en) * | 2017-09-27 | 2018-06-22 | 青岛鼎信通讯股份有限公司 | A kind of magnetic coupling half duplex communication integrated circuit of band isolation power supply |
-
2018
- 2018-09-02 CN CN201811049685.3A patent/CN109166298A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203689052U (en) * | 2013-11-20 | 2014-07-02 | 吴浩 | Power and relay driving circuit for electric energy meter equipped with communication module |
| CN205753990U (en) * | 2016-05-04 | 2016-11-30 | 广州顶源电子科技有限公司 | A kind of high isolation DC-DC power module |
| CN108199821A (en) * | 2017-09-27 | 2018-06-22 | 青岛鼎信通讯股份有限公司 | A kind of magnetic coupling half duplex communication integrated circuit of band isolation power supply |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706899A (en) * | 2019-09-26 | 2020-01-17 | 青岛鼎信通讯股份有限公司 | High-speed magnetic coupling PCB transformer applied to terminal and ammeter scheme |
| CN112213555A (en) * | 2019-12-20 | 2021-01-12 | 青岛鼎信通讯股份有限公司 | Electric energy meter solution method based on high-speed magnetic isolation communication |
| CN113009218A (en) * | 2019-12-20 | 2021-06-22 | 青岛鼎信通讯股份有限公司 | Pulse group metering protection method for electric energy meter |
| CN112462134A (en) * | 2021-01-20 | 2021-03-09 | 青岛鼎信通讯股份有限公司 | Three-phase electric energy meter based on magnetic isolation technology |
| CN114353890A (en) * | 2021-12-08 | 2022-04-15 | 深圳市拓安信计控仪表有限公司 | Micro-power consumption communication circuit and electromagnetic water meter |
| CN114353890B (en) * | 2021-12-08 | 2022-12-13 | 深圳市拓安信计控仪表有限公司 | Micro-power consumption communication circuit and electromagnetic water meter |
| CN114814355A (en) * | 2022-06-28 | 2022-07-29 | 石家庄科林电气股份有限公司 | Three-phase meter based on manganin sampling and metering method |
| CN114814355B (en) * | 2022-06-28 | 2022-09-13 | 石家庄科林电气股份有限公司 | Three-phase meter based on manganin sampling and metering method |
| CN115112947A (en) * | 2022-07-26 | 2022-09-27 | 青岛鼎信通讯股份有限公司 | Electric energy meter, communication method, device and medium of metering chip and MCU |
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Addressee: Sun Siqi Document name: Notice of conformity |
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Application publication date: 20190108 |
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| RJ01 | Rejection of invention patent application after publication |