CN207801935U - A kind of meter module communicated with Wi-Fi based on power wire broadband carrier - Google Patents
A kind of meter module communicated with Wi-Fi based on power wire broadband carrier Download PDFInfo
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- CN207801935U CN207801935U CN201820317046.XU CN201820317046U CN207801935U CN 207801935 U CN207801935 U CN 207801935U CN 201820317046 U CN201820317046 U CN 201820317046U CN 207801935 U CN207801935 U CN 207801935U
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Abstract
The utility model provides a kind of meter module communicated with Wi Fi based on power wire broadband carrier, including main control unit, power carrier modem module, difference operational amplifying circuit, isolation coupling circuit, forceful electric power interface circuit, storage unit, Wi Fi communication units, switching circuit, antenna circuit, light current interface circuit, super capacitor circuit and DCDC power circuits.Power wire broadband carrier communication is combined with Wi Fi communications, enables the advantage complementation of two kinds of communication patterns.Wi Fi communications have higher rate, and carrying out bimodulus with power wire broadband carrier communication mixes, and can fully play the high-speed feature of two kinds of communication modes itself, improve the efficiency of bimodulus mixing, promote the rate of communication, improve the success rate and rate of meter reading.In addition, Wi Fi communications have the function of Wi Fi hot spots, user mobile phone connection is supported, user obtains ammeter data special equipment and can be obtained ammeter data without opening ammeter box or purchase, easy to use, can also understand itself electricity consumption situation in time, promote user experience.
Description
Technical field
The utility model is related to power system telecommunications technologies, more particularly to one kind to be communicated with Wi-Fi based on power wire broadband carrier
Meter module.
Background technology
Ammeter is the instrument for measuring electric energy, and intelligent electric meter has obtained comprehensive popularization in recent years, in national residents
Coverage rate has been more than 80%, and user and power operation department etc. for power information acquisition also with experience accumulation and business
The demand of expanded function and gradually increase, need the data for being acquired, handling, transmitting more and more.Therefore high-speed is stablized
Reliable communication mode is the guarantee of ammeter power information acquisition.
The communication mode of existing ammeter includes mainly FSK small wireless, power wire broadband carrier, power line narrow band carrier etc.,
Wherein power wire broadband carrier communication can reach 1Mpbs since its rate is higher and be widely used, but existing power line is logical
Believe that complex, simple power wire broadband carrier communication mode cannot be guaranteed that coverage of communication reaches 100%.In the prior art
Also have using power line carrier and wireless double mode module as effective supplement of power line carrier communication, by intelligent electric meter and information
It is wirelessly attached by power line carrier or micropower between acquisition module, channel radio is made up in a manner of wire communication
It is weak that letter penetrates barrier ability, the problem of making communication distance and stability decline；Power line carrier communication is solved with wireless communication
In easily by the serious problem of power line channel noise interference effect, carrier attenuation, to carry out effectively reliable data transmission.
However, since micro power radio communication rate is relatively low, differing greatly between electric power line width carrier communication rate,
Wideband power carrier communication rate is affected, the less efficient of bimodulus mixed networking is made, electric power line width load cannot be given full play to
The characteristics of wave communication high-speed, traffic rate is relatively low.
Utility model content
This application provides a kind of meter modules communicated with Wi-Fi based on power wire broadband carrier, to solve existing skill
Using in bimodulus mixed communication in art, wireless communication rate differs greatly with electric power line width carrier communication rate, cannot be abundant
The characteristics of playing electric power line width carrier communication high-speed, the relatively low problem of traffic rate.
A kind of meter module communicated with Wi-Fi based on power wire broadband carrier, including the modulation of main control unit, power carrier
Demodulating unit, difference operational amplifying circuit, isolation coupling circuit, forceful electric power interface circuit, storage unit, Wi-Fi communication units, switching electricity
Road, antenna circuit, light current interface circuit, super capacitor circuit and DCDC power circuits；
The main control unit is communicated with the power carrier modem module, the storage unit, the Wi-Fi respectively
Unit, light current interface circuit connection；
The power carrier modem module is connect with the difference operational amplifying circuit, the difference operational amplifying circuit with it is described
Isolation coupling circuit connects, and the isolation coupling circuit is connect by the forceful electric power interface circuit with power line；The isolation coupling
Circuit is closed to connect with the power carrier modem module；
The Wi-Fi communication units are connect with the switching circuit, and the switching circuit is connect with the antenna circuit；
The super capacitor circuit is in parallel with the light current interface circuit, and the light current interface circuit is connect with ammeter, institute
It states DCDC power circuits to connect with the super capacitor circuit, the DCDC power circuits are the main control unit, the storage
Unit, the power carrier modem module, the Wi-Fi communication units, the super capacitor circuit, the difference amplifier
Circuit, switching circuit power supply.
Optionally, the meter module further includes bandwidth-limited circuit, and the isolation coupling circuit is filtered by the band logical
Wave module is connect with the power carrier modem module.
Optionally, it is connected with low-pass filter circuit between the switching circuit and the antenna circuit.
Optionally, LC impedance matching circuits are connected between the low-pass filter circuit and the antenna circuit.
Optionally, it is connected with electrostatic discharge protective circuit between the low-pass filter circuit and the antenna circuit.
Optionally, the Wi-Fi communication units and the main control unit connecting interface include USB, PHY interface.
Optionally, the meter module includes single-phase electric meter module and three-phase kilowatt-hour meter module.
Technical solution provided by the present application includes following advantageous effects：
The application provides a kind of meter module communicated with Wi-Fi based on power wire broadband carrier, and broadband over power line is carried
Wave communication is combined with Wi-Fi communications, and the communications of data are carried out in a manner of channel switching cooperation, make two kinds of communication patterns
Advantage be able to complementation.Power wire broadband carrier communication can make up the problem of Wi-Fi communication distances are short, stability declines；Wi-Fi
Communication can solve the problems, such as power line carrier communication be easily disturbed, decay it is serious, provide stablize effectively and coverage area it is larger
Communication data transfer environment.Wi-Fi communications have higher rate, and carrying out bimodulus with power wire broadband carrier communication mixes, can
The high-speed feature of Wi-Fi communication and power wire broadband carrier communication itself is fully played, the efficiency of bimodulus mixing is improved, carries
The rate for rising communication, improves the success rate and rate of meter reading.In addition, Wi-Fi communicates the Wi-Fi Hotspot having the function of, support to use
Family mobile phone connection, user obtain special equipment and can be obtained ammeter data, use without opening ammeter box or purchase ammeter data
It is convenient, itself electricity consumption situation can be also understood in time, promote user experience.
Description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of ammeter based on power wire broadband carrier communicated with Wi-Fi that the utility model embodiment provides
Module diagram.
Specific implementation mode
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without having to pay creative labor, other drawings may also be obtained based on these drawings.
Attached drawing 1 is please referred to, the figure shows provided in this embodiment a kind of logical with Wi-Fi based on power wire broadband carrier
The meter module schematic diagram of letter.
The application provides a kind of meter module communicated with Wi-Fi based on power wire broadband carrier, including main control unit, electricity
Power carrier modulation demodulating unit, difference operational amplifying circuit, isolation coupling circuit, forceful electric power interface circuit, storage unit, Wi-Fi communications
Unit, switching circuit, antenna circuit, light current interface circuit, super capacitor circuit and DCDC power circuits.
Main control unit is electric with power carrier modem module, storage unit, Wi-Fi communication units, light current interface respectively
Road connects.
Main control unit is the core of the meter module, and main control unit is made of master chip circuit, and master chip dominant frequency is
400MHz, outside is using 25MHz without source crystal.Main control unit be responsible for program operation, and by a variety of parallel interfaces respectively with electricity
Power carrier modulation demodulating unit, storage unit, Wi-Fi communication units are into row data communication.By whole business function, scheduling is each
A functional unit, it is final to realize the functions such as power information acquisition, mixed networking, Wi-Fi Hotspot.
Storage unit is mainly used for storing initial parameter, driving, according to acquisition and total event the data such as reports totally.Storage is single
Member is made of storage chip circuit, can be communicated to connect by SPI interface and main control unit.
Power carrier modem module uses OFDM modulation demodulation systems, the communication mode that data are passed through bandwidth carrier
It is transmitted.Its frequency range is 2-12MHz, and traffic rate 100kps-25Mbps, reception dynamic range is -70dBm-25dBm.
Power carrier modem module can be communicatively coupled by internal bus.
Difference operational amplifying circuit is differential operational amplifier, function be for power carrier modem module output signal into
Row signal amplifies, while carrying out low-pass filtering to signal, to improve signal strength and signal quality.Power carrier modulation /demodulation list
The output interface end of member is connect with difference operational amplifying circuit input interface end.Difference operational amplifying circuit is powered for 12V in the present embodiment, peak
Value electric current is 1A, and voltage amplification factor is 14.2 times.
Isolation coupling circuit is mainly used for coupling a signal to power line or induction receives the signal of power line.Difference is transported
The output interface end on electric discharge road is connect with isolation coupling circuit, and isolation coupling circuit is connected by forceful electric power interface circuit and power line
It connects, couples a signal to power line.Isolation coupling circuit is connect with the input interface end of power carrier modem module, to connect
Receive the signal of power line.Isolation coupling circuit is by the discrete element group such as X capacitances and coupling transformer in 0-14MHz frequency ranges
Loss of signal is not higher than 0.4dBm, while the isolation strength of isolating transformer primary and secondary is more than 4KV.
Forceful electric power interface circuit is the zero curve of meter module and power line and the electric interfaces of phase line.
The Wi-Fi communication units support adhoc mode, dual mode communication can be formed with powerline bandwidth carrier communication, with letter
The mode of road switching cooperation carries out the communications of data, enables the advantage complementation of two kinds of communication patterns, improves covering for communication
Lid rate.Made up in a manner of powerline bandwidth carrier communication Wi-Fi communications penetrate barrier ability it is weak, make communication distance and steady
The problem of qualitative decline；With Wi-Fi communicate solve powerline bandwidth carrier communication in easily by power line channel noise interference effect,
The serious problem of carrier attenuation realizes that data stabilization is effectively transmitted.
The existing ammeter used need to open ammeter box and be checked if user wants to know about itself electricity consumption situation, Huo Zhe
In the case of not opening ammeter box, the special equipment of ammeter data can be directly acquired by purchase.And the Wi-Fi in the application is logical
Letter unit can be used as Wi-Fi Hotspot and be communicated with mobile phone, and user need not open ammeter box, or purchase is exclusively used in obtaining ammeter
The equipment of data information can inquire ammeter data information by mobile phone, convenient to use.User also can be timely by mobile phone
Understand itself electricity consumption situation, improves the experience of user；User can be also arranged by mobile phone to be reminded, when relatively low with existing electricity consumption number
When, the purchase for carrying out electricity consumption in time can be reminded, avoids having a power failure due to carelessness, influences normal life.In addition, passing through mobile phone
The maintenance of function can be carried out, the maintenance work of Field Force is convenient for.
The traffic rate of Wi-Fi communication units is combined up to 150Mbps, by it with powerline bandwidth carrier communication, no
Powerline bandwidth carrier communication rate can be caused to hinder, powerline bandwidth carrier communication and Wi-Fi communications two can be given full play to
The high-speed feature of kind mode itself, improves the efficiency of mixed networking, promotes the rate of communication, help to improve the success of meter reading
Rate and meter reading rate.
The Wi-Fi communication units are connect with switching circuit, and switching circuit is mainly used for the electricity of the transmitting-receiving to Wi-Fi communication units
Road switches over.It can coordinate transmission circuit separation by the circuit, while share an antenna, save antenna cost.Switching
The chip of circuit supports that frequency is 3GHz, and loss is not more than 0.5dBm.
The switching circuit is connect with antenna circuit, carries out signal transmission.Antenna circuit includes spring antenna, is had higher
Performance and lower cost.
Super capacitor circuit is in parallel with light current interface circuit, and light current interface circuit is connect with ammeter.When detecting that light current connects
When mouth does not have power input, automatic discharging；Super capacitor charging is then carried out when detecting that light current interface has power input, is full of
Stop charging afterwards.The normal work that can guarantee meter module in the case where ammeter powers off, improves the reliability of data information.It is super
Grade condenser network includes using 1.5F super capacitors as core charge-discharge control circuit.
Light current interface circuit is mainly used for ammeter into row data communication.Including circuits such as serial ports, GPIO, it can be achieved that level
The functions such as conversion, open-drain output, electrostatic protection.
When DCDC power circuits are used for super capacitor circuit discharging, the voltage of output converted after into main control unit,
Storage unit, power carrier modem module, Wi-Fi communication units, super capacitor circuit, difference operational amplifying circuit, switching electricity
Road powers.Super capacitor circuit is connect with DCDC power circuits.6-35V, output voltage are supported in the input of DCDC power circuits
For 3.3V and 12V.
Optionally, meter module further includes bandwidth-limited circuit, and isolation coupling circuit passes through bandpass filtering modules block and electric power
Carrier modulation demodulating unit connects.Bandwidth-limited circuit is mainly used for carrying out for the receiving portion of power carrier modem module
Signal filters, and eliminates the influence of out-of-band noise, while providing the signal-to-noise ratio for receiving signal.The band logical frequency model of bandwidth-limited circuit
It encloses for 1-14MHz, attenuation outside a channel is not less than 50dBm.
Optionally, low-pass filter circuit is connected between switching circuit and antenna circuit.Low-pass filter circuit is mainly used for pressing down
The less radio-frequency out-of-band noise of Wi-Fi communication units processed meets the performance indicator requirement of the wireless communication committee, reduces wireless dry
It disturbs.Low-pass filter circuit can be 0-2.6GHz by frequency, and out-of-band noise damping capacity is not less than 40dBm.
Optionally, LC impedance matching circuits are connected between low-pass filter circuit and antenna circuit, impedance is 50 ohm.
Optionally, it is connected with electrostatic discharge protective circuit between low-pass filter circuit and antenna circuit, realizes the electrostatic protection of 15KV
Ability.
Optionally, Wi-Fi communication units and main control unit connecting interface include USB, PHY interface.
Optionally, meter module includes single-phase electric meter module and three-phase kilowatt-hour meter module.What the utility model embodiment provided
It can be directly placed into ammeter Local Communication Module groove location in meter module structure, DLT645-2007 and state's net are compatible in agreement
1376.2 communication protocols can meet existing power information capturing service, support the single-phase carrier of country's DLT645-2007 standards
Intelligent electric meter and Three Phase Carrier Based intelligent electric meter have relatively broad practicability.User is without replacing existing ammeter, i.e.,
Mobile communication can be achieved, the functions such as real-time query power information reduce the cost of investment of electricity consumption.
The application provides a kind of meter module communicated with Wi-Fi based on power wire broadband carrier, and broadband over power line is carried
Wave communication is combined with Wi-Fi communications, and the communications of data are carried out in a manner of channel switching cooperation, make two kinds of communication patterns
Advantage be able to complementation.Power wire broadband carrier communication can make up the problem of Wi-Fi communication distances are short, stability declines；Wi-Fi
Communication can solve the problems, such as power line carrier communication be easily disturbed, decay it is serious, provide stablize effectively and coverage area it is larger
Communication data transfer environment.Wi-Fi communications have higher rate, and carrying out bimodulus with power wire broadband carrier communication mixes, can
The high-speed feature of Wi-Fi communication and power wire broadband carrier communication itself is fully played, the efficiency of bimodulus mixing is improved, carries
The rate for rising communication, improves the success rate and rate of meter reading.In addition, Wi-Fi communicates the Wi-Fi Hotspot having the function of, support to use
Family mobile phone connection, user obtain special equipment and can be obtained ammeter data, use without opening ammeter box or purchase ammeter data
It is convenient, itself electricity consumption situation can be also understood in time, promote user experience.
The meter module is compatible with existing single-phase/three-phase carrier intelligent ammeter, can be inserted into ammeter Local Communication Module slot position
It sets, compatible DLT645-2007 and 1376.2 communication protocol of state's net, can not only meet existing power information gathering in agreement
Business, while carrying out ammeter replacement without user, you can realize communication function, investment reduction cost.
It should be noted that such as the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include but also include not bright so that article or equipment including a series of elements include not only those elements
The other element really listed, or further include for elements inherent to such a process, method, article, or device.Do not having
In the case of more limitations, the element that is limited by sentence "including a ...", it is not excluded that including the element process,
There is also other identical elements in method, article or equipment.
The above is only the specific implementation mode of the application, is made skilled artisans appreciate that or realizing this Shen
Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or range.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
It should be understood that the application is not limited to the content for being described above and being shown in the accompanying drawings, and can
To carry out various modifications and change without departing from the scope.Scope of the present application is only limited by the accompanying claims.
Claims (7)
1. a kind of meter module communicated with Wi-Fi based on power wire broadband carrier, which is characterized in that including main control unit, electricity
Power carrier modulation demodulating unit, difference operational amplifying circuit, isolation coupling circuit, forceful electric power interface circuit, storage unit, Wi-Fi communications
Unit, switching circuit, antenna circuit, light current interface circuit, super capacitor circuit and DCDC power circuits；
The main control unit respectively with the power carrier modem module, the storage unit, the Wi-Fi communication units
First, the described light current interface circuit connection；
The power carrier modem module is connect with the difference operational amplifying circuit, and the difference operational amplifying circuit is isolated with described
Termination power connects, and the isolation coupling circuit is connect by the forceful electric power interface circuit with power line；The isolation coupling electricity
Road is connect with the power carrier modem module；
The Wi-Fi communication units are connect with the switching circuit, and the switching circuit is connect with the antenna circuit；
The super capacitor circuit is in parallel with the light current interface circuit, and the light current interface circuit is connect with ammeter, described
DCDC power circuits are connect with the super capacitor circuit, and the DCDC power circuits are the main control unit, storage list
First, the described power carrier modem module, the Wi-Fi communication units, the super capacitor circuit, difference amplifier electricity
Road, switching circuit power supply.
2. meter module according to claim 1, which is characterized in that the meter module further includes bandwidth-limited circuit,
The isolation coupling circuit is connect by the bandpass filtering modules block with the power carrier modem module.
3. meter module according to claim 1, which is characterized in that connected between the switching circuit and the antenna circuit
There is low-pass filter circuit.
4. meter module according to claim 3, which is characterized in that between the low-pass filter circuit and the antenna circuit
It is connected with LC impedance matching circuits.
5. meter module according to claim 3, which is characterized in that between the low-pass filter circuit and the antenna circuit
It is connected with electrostatic discharge protective circuit.
6. meter module according to claim 1, which is characterized in that the Wi-Fi communication units and the main control unit
Connecting interface includes USB, PHY interface.
7. according to claim 1-6 any one of them meter modules, which is characterized in that the meter module includes single-phase electric meter
Module and three-phase kilowatt-hour meter module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820317046.XU CN207801935U (en) | 2018-03-08 | 2018-03-08 | A kind of meter module communicated with Wi-Fi based on power wire broadband carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820317046.XU CN207801935U (en) | 2018-03-08 | 2018-03-08 | A kind of meter module communicated with Wi-Fi based on power wire broadband carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207801935U true CN207801935U (en) | 2018-08-31 |
Family
ID=63275598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820317046.XU Active CN207801935U (en) | 2018-03-08 | 2018-03-08 | A kind of meter module communicated with Wi-Fi based on power wire broadband carrier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207801935U (en) |
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2018
- 2018-03-08 CN CN201820317046.XU patent/CN207801935U/en active Active
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