CN109004954A - A kind of power carrier communication module based on OFDM technology - Google Patents
A kind of power carrier communication module based on OFDM technology Download PDFInfo
- Publication number
- CN109004954A CN109004954A CN201710421905.XA CN201710421905A CN109004954A CN 109004954 A CN109004954 A CN 109004954A CN 201710421905 A CN201710421905 A CN 201710421905A CN 109004954 A CN109004954 A CN 109004954A
- Authority
- CN
- China
- Prior art keywords
- circuit
- power
- communication module
- power line
- ofdm technology
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- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
Abstract
A kind of power carrier communication module based on OFDM technology, including communication module ontology (1), it is further characterized in that the transformer circuit (2) on communication module ontology (1), the network interface circuit (3) being connected with transformer circuit (2), the power input interface (4) and 220V power line interface (5) being connected with network interface circuit (3), wherein transformer circuit (2) includes power circuit (21), transmitting line (22), receives circuit (23), power line coupling circuit (24) and zero cross detection circuit (25).
Description
Technical field
A kind of power carrier communication module based on OFDM technology, solve LED visible light communication application in LED light and with
The interconnection problems netted very much can save cable and directly be communicated using power line, belong to intelligence communication field.
Background technique
Last century the '20s, power line communication begin to the concern for causing people, since power line communication is with nowhere
Not electric power cable be transmission medium, so power line communication has Low investment, high repayment, networking and maintenance simple etc. prominent
Advantage, therefore rapidly developed.Conventional powerline communication can only carry out the transmission of information by high voltage transmission line, and apply
Range is quite narrow, the continuous development with power line communication technology with reach its maturity, power line communication can be used for it is high,
In, the different power line networks such as low pressure, be widely used in different field.It is automatic that low voltage electric power carrier communication is mainly used for power line
The fields such as meter reading, smart home, or even have begun and apply to the fields such as high speed wide-band communication.Power line carrier, PLC specific implementation
Mode mainly includes that quadrature amplitude modulation (QAM) and trellis coded modulation (TCM), orthogonal multicarrier modulation (OFDM), spread spectrum are logical
Three kinds of letter.Based on this, there is strong antijamming capability for spread spectrum communication mode, opposite other way, which implements, to be easier
Feature is demodulated using the shift keying modulation in spread spectrum communication mode, and the utility model provides a kind of based on OFDM technology
Power carrier communication module.
Summary of the invention
The technical problem to be solved in the invention is to provide a kind of power carrier communication module based on OFDM technology, can
It is directly embedded into each electric appliances and network access equipment, realizes low cost, the local area network building technology of high-speed, common household electric
Intelligence can be realized in device.
The present invention will be seen that optical communication system and power line communication (PLC) technology, fiber to the home system globe area, pass through optical fiber
Network is connected to power line carrier module and signal is transferred on power line, and LED lamp obtains these information from power line, with light
Form is transmitted to smart machine terminal.It realizes the free-space optics access of high-speed, high confidentiality, constructs intelligent home network.
The technical scheme adopted by the invention is that: a kind of power carrier communication module based on OFDM technology, including communication
Module body (1), the transformer circuit (2) on communication module ontology (1), the network interface electricity being connected with transformer circuit (2)
Road (3), the power input interface (4) and 220V power line interface (5) being connected with network interface circuit (3), wherein mutual inductor is electric
Road (2) includes power circuit (21), transmitting line (22), receives circuit (23), power line coupling circuit (24) and zero passage detection
Circuit (25).
The transformer circuit (2) on the useful more power lines of signal decompositing to come or weak electric signal is coupled to electricity
It is to be realized by a special mutual inductor in the line of force, it is made of three coils, and one is to connect power line, and one is to use
Signal is induced from power line, the effect of the last one coil is weak electric signal to be coupled to power line first.Utilize 24
Number line is around output winding, around 1 circle.With No. 32 lines around electric power line winding group, around 3 circles.With No. 32 lines around winding is received, around 4 circles.
A New-core that master chip is released using networking under Qualcomm and interconnection technique subsidiary high pass Atheros
Piece QCA6410, it brings top performance for the Home-Plug power line communications apparatus of a new generation.The design of QCA6410 is not only
The power line communication function of higher performance is injected for household application market, and cost is lower, volume is also smaller, the system of QCA6410
Block diagram is as shown in Figure 2.QCA6410 is the solution of industry highest degree of integration, in one chip simultaneously incorporate memory,
10/100 ethernet PHY, AFE(analog front end)/line driver and Power Management Unit.It is whole using the adapter of QCA6410 chip
Power consumption can help client development to go out the most small and exquisite adapter design of industry less than 1.8 watts, and be able to achieve super low-power consumption.
The network interface circuit (3) is responsible for access network signal.
The power input interface (4) accesses 5V, and 150mA power supply is powered for whole device.
The 220V power line interface (5) accesses 220V power line.
This analog circuit first of digital circuit and mutual inductance interferes with each other the power circuit (21) in order to prevent, in number
A filter inductance is added between the analog power of power supply.
The signal that the transmitting line (22) comes out from the ADC of QCA6410 passes through the capacitance of two 0.47uF, passes through
First coil is coupled to the alternating current line of force.
The signal obtained from power line is passed through a series of resistance and inductor filter circuit by the reception circuit (23)
The DAC module for being input to QCA6410 is sampled and is decoded.Need to know the zero passage of voltage on power line during decoded
Point, so devising the zero passage dot circuit of voltage.This circuit is isolated using optocoupler and power line.
Detailed description of the invention
Fig. 1 is a kind of overall schematic of power carrier communication module based on OFDM technology；
1, communication module ontology 2, transformer circuit 3, network interface circuit 4, power input interface 5,220V electric power
Line interface 21, transmitting line 23, receives circuit 24, power line coupling circuit 25, zero passage detection at power circuit 22
Circuit
Fig. 2 is a kind of network interface circuit figure of power carrier communication module based on OFDM technology.
Specific embodiment
The invention will be further described with example with reference to the accompanying drawing.
As shown in Figure 1, a kind of power carrier communication module based on OFDM technology, including communication module ontology (1), it is special
Sign also resides in the transformer circuit (2) on communication module ontology (1), the network interface circuit being connected with transformer circuit (2)
(3), the power input interface (4) and 220V power line interface (5) being connected with network interface circuit (3), wherein transformer circuit
(2) include power circuit (21), transmitting line (22), receive circuit (23), power line coupling circuit (24) and zero passage detection electricity
Road (25).
The present invention is mainly suitable for 10/100M power carrier, network signal special transformer coupled is arrived by one
On 220V power line.Power line is set to also take on the transmission of signal while power supply.Chip of the present invention is using high energy company
The high speed with another Homeplug module 10/100M then of power line may be implemented using Home-Plug agreement in QCA6410 chip
Communication.Maximum communication rate can reach 70M when by test, power line length is 20 meters general in the case where short distance, distance compared with
Traffic rate can reach 40M when power line length is 150 meters general in the case where remote.This module solves LED visible light communication and answers
With the interconnection problems of middle LED light and Ethernet, cable can be saved and directly communicated using power line, visible light communication is made
Using easier.
Claims (1)
1. a kind of power carrier communication module based on OFDM technology, including communication module ontology (1), it is further characterized in that communication
Transformer circuit (2) in module body (1), the network interface circuit (3) being connected with transformer circuit (2), with network interface
Circuit (3) connected power input interface (4) and 220V power line interface (5), wherein transformer circuit (2) includes power circuit
(21), transmitting line (22), reception circuit (23), power line coupling circuit (24) and zero cross detection circuit (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710421905.XA CN109004954A (en) | 2017-06-07 | 2017-06-07 | A kind of power carrier communication module based on OFDM technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710421905.XA CN109004954A (en) | 2017-06-07 | 2017-06-07 | A kind of power carrier communication module based on OFDM technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109004954A true CN109004954A (en) | 2018-12-14 |
Family
ID=64573778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710421905.XA Pending CN109004954A (en) | 2017-06-07 | 2017-06-07 | A kind of power carrier communication module based on OFDM technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109004954A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756268A (en) * | 2017-11-08 | 2019-05-14 | 天津职业技术师范大学 | A kind of indoor high-speed visible light communication system based on OFDM |
| CN110943779A (en) * | 2019-12-24 | 2020-03-31 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Visible light communication equipment test system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201594823U (en) * | 2009-07-22 | 2010-09-29 | 冯汉春 | Power line carrier communication device |
| CN202172403U (en) * | 2011-09-08 | 2012-03-21 | 长沙威胜信息技术有限公司 | Low voltage power line carrier communication module |
| CN203340068U (en) * | 2013-06-04 | 2013-12-11 | 国家电网公司 | Power line carrier wave communication system |
| CN104836709A (en) * | 2014-12-26 | 2015-08-12 | 苏州市职业大学 | Intelligent household system based on power carrier |
-
2017
- 2017-06-07 CN CN201710421905.XA patent/CN109004954A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201594823U (en) * | 2009-07-22 | 2010-09-29 | 冯汉春 | Power line carrier communication device |
| CN202172403U (en) * | 2011-09-08 | 2012-03-21 | 长沙威胜信息技术有限公司 | Low voltage power line carrier communication module |
| CN203340068U (en) * | 2013-06-04 | 2013-12-11 | 国家电网公司 | Power line carrier wave communication system |
| CN104836709A (en) * | 2014-12-26 | 2015-08-12 | 苏州市职业大学 | Intelligent household system based on power carrier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756268A (en) * | 2017-11-08 | 2019-05-14 | 天津职业技术师范大学 | A kind of indoor high-speed visible light communication system based on OFDM |
| CN110943779A (en) * | 2019-12-24 | 2020-03-31 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Visible light communication equipment test system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181214 |