CN202495963U - OFDM carrier communication module - Google Patents
OFDM carrier communication module Download PDFInfo
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- CN202495963U CN202495963U CN2012201300635U CN201220130063U CN202495963U CN 202495963 U CN202495963 U CN 202495963U CN 2012201300635 U CN2012201300635 U CN 2012201300635U CN 201220130063 U CN201220130063 U CN 201220130063U CN 202495963 U CN202495963 U CN 202495963U
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- 230000005540 biological transmission Effects 0.000 abstract description 3
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Abstract
The utility model discloses an OFDM carrier communication module, produce the circuit including power supply circuit, controller, OFDM carrier chip, power drive circuit, receipt filter circuit, carrier signal coupling circuit and zero crossing signal. The utility model has the advantages that the module uses OFDM carrier chip TA6102A, realizes high-speed remote carrier communication, and communication rate can reach 150kbps at most, and the practicality can reach more than 20kbps, owing to use OFDM multicarrier modem technique, the transmission power spectrum is evenly distributed to in the used carrier frequency channel for the transmission power of each frequency point accords with the requirement of national standard. The chip has integrated the function of district discernment, can cooperate the district discernment transmitter discernment ammeter place the district, realizes the automatic management of ammeter archives.
Description
Technical field
The utility model relates to the low-voltage collecting meter reading field of power industry, particularly a kind of carrier communication module of two-forty.
Background technology
Along with the foundation of intelligent grid, voltage power-line carrier communication technology is used widely on electric energy management.Intelligent grid is a high speed, real-time, two-way for the requirement of carrier communication, the needs of the side management that just can satisfy the demands.But present various power line carrier communication mode all comes with some shortcomings; Mainly show the following aspects: the one, traffic rate is low; A large amount of at present carrier communication module speed of using can't satisfy the requirement of real intelligent grid far away all at several kbps even less than 1kbps; The 2nd, strengthen carrier transmit power in order to pursue communication distance, exceed the GB requirement, cause the electrical network secondary pollution; The 3rd, the Duo Tai district load in mixture and the incomplete situation of ammeter archives under because signal cross-talk, carrier module can't be distinguished the platform district under the ammeter.
Summary of the invention
The purpose of the utility model is to provide a kind of narrow-band high-speed, low transmitting power, possesses the carrier communication module of platform district recognition function.Module is used the OFDM carrier chip, has the advantages that anti-height is decayed, the availability of frequency spectrum is high, realizes the communication of high speed long range carriers, and traffic rate reaches as high as 150kbps, and practicality can arrive more than the 20kbps.Owing to use OFDM multi-carrier modulation demodulation techniques, transmitting power spectrum mean allocation makes the transmitting power of each frequency meet the requirement of GB in used carrier wave frequency range.The function of platform district identification that chip is integrated can cooperate platform district identification transmitter to discern the affiliated platform district of ammeter automatically.
The technical scheme of the utility model is following:
A kind of OFDM carrier communication module; Comprise that power circuit, controller, OFDM carrier chip, power driving circuit, the circuit that accepts filter, carrier signal coupling circuit and zero cross signal produce circuit; Described power circuit is that carrier module provides working power; Described controller is connected between ammeter and the OFDM carrier chip; The described power driving circuit and the circuit that accepts filter are connected between OFDM carrier chip and the carrier signal coupling circuit, and described carrier signal coupling circuit is connected with power line, and described zero cross signal produces circuit provides the power frequency zero cross signal to the OFDM carrier chip.
Described power driving circuit is a class ab ammplifier.
Described power driving circuit is the D class A amplifier A.
Described OFDM carrier chip is TA6102A.
The described circuit that accepts filter is that cut-off frequency is the high pass filter of 250KHz.
Described carrier communication module reference carrier frequency is 290KHz-340KHz.
Described carrier wave coupling circuit is that centre frequency is the impedance matching network of 50KHz for the 315KHz bandwidth.
The good effect of the utility model
The utility model has the advantages that the carrier communication module that a kind of narrow-band high-speed is provided; The carrier signal transmitted power meets the GB requirement, can not cause secondary pollution to electrical network, and is used with platform district identification transmitter; Can locate the affiliated platform district of ammeter, realize the automatic management of ammeter archives.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the system block diagram that the utility model is implemented.
Fig. 2 is the power driving circuit of the utility model.
Fig. 3 is the reception high-pass filtering circuit of the utility model.
Fig. 4 is the OFDM carrier chip TA6102A and the peripheral circuit diagram of the utility model.
Fig. 5 is the power circuit of the utility model.
Fig. 6 is the carrier signal coupling circuit of the utility model.
Embodiment
Fig. 1 has reflected the formation of the utility model module, from this figure can find out that the utility model comprises the carrier signal coupling circuit, the circuit that accepts filter, power driving circuit, OFDM carrier chip, controller, power circuit and zero cross signal produce circuit.Its middle controller is connected with ammeter; Obtain the data that to upload, be coupled on the power line by the carrier wave coupling circuit, will pass to ammeter by the data that power line receives again through after this resume module; Realize information interaction; Controller also will be realized the dynamic routing function, makes the communication unit can free relaying, dynamic group net.The carrier signal coupling circuit is realized the carrier signal coupling between module and the power line, and the circuit that accepts filter carries out high-pass filtering to the OFDM carrier signal that receives, and filters low noise and interference are sent into the OFDM carrier chip again and carried out bandpass filtering and digital processing.The signal that power driving circuit is responsible for the OFDM carrier chip is sent amplifies, and is coupled on the power line by coupling circuit again.Zero cross signal produces electric circuit inspection electrical network power frequency component zero crossing and gives OFDM carrier chip with zero cross signal, is used for phase place and judges the identification of He Tai district.
Show that according to domestic and international big quantity research with super band, noise characteristic is more smooth at 200KHz for electrical network, the attenuation characteristic of carrier signal is then accelerated along with the increase of frequency that 290KHz-340KHz is a frequency range that overall target is more excellent, be fit to carrier wave and use.OFDM carrier chip TA6102A works in this frequency range exactly; Physical layer has the data transfer rate of the highest 150kbps; Practical rates can reach more than the 20kbps, under the control of automatic relay dynamic group net, can satisfy the high speed of intelligent grid, real-time, two-way application demand.The ofdm signal energy even is distributed in the bandwidth of 50KHz, and therefore the power of arbitrary frequency is all very little, can not cause secondary pollution to electrical network, is a kind of clean carrier communication mode.The function of platform district identification that the TA6102A chip is integrated, under the cooperation of platform district identification transmitter, can locating module with ammeter under the platform district, the automatic management of realization ammeter archives.
Fig. 2 is the used AB class power driving circuit of the utility model module, and carrier signal is given the carrier signal coupling circuit through Q2 and Q9 amplification back through capacitance C44.Special, Q1, Q4, D1, R7, R8, R10 form input signal control and power supply low-voltage variation function jointly, and when supply voltage was lower than 8V, pre-amplifier cut out output.
Fig. 3 is a receiving filter, and by the 2 rank passive high three-way filters that C36, C38, L5 form, cut-off frequency is 250KHz, is used for the low-frequency noise on the filtering power line.
Fig. 4 is OFDM carrier chip TA6102A and peripheral circuit diagram.Send into chip behind OFDM carrier signal process receiving filter filters low noise during receiving mode on the power line; Chip internal has the analog band-pass filter of 290KHz-340KHz; And programmable gain amplifier is sent into digital baseband and is decoded Signal Pretreatment after the ADC sampling.Data are encoded through digital baseband during sending mode, send into DAC and low pass filter, after amplifying in advance, send into power driving circuit.The platform district recognition function of this chip produces the zero cross signal that circuit is sent here according to zero passage, can receive the platform district identification signal of sending from platform district identification transmitter.
Fig. 5 is the power circuit that working power is provided to module, and the 15V power supply of the ammeter end being sent here by LM2841 is reduced to the use of 5V supplying module low-voltage circuit.
Fig. 6 is the carrier signal coupling circuit; Coupling coil TA1 have three groups independently winding be responsible for the transmission and the reception of carrier signal; Connecing on high-tension side L7, L8 and C12 organization center frequency is the impedance matching network of 50KHz for the 315KHz bandwidth, and TVS pipe Z1 is used to avoid the impacting with high pressure from electrical network to damage carrier module.
Claims (7)
1. OFDM carrier communication module; Comprise that power circuit, controller, OFDM carrier chip, power driving circuit, the circuit that accepts filter, carrier signal coupling circuit and zero cross signal produce circuit; Described power circuit is that carrier module provides working power; Described controller is connected between ammeter end and the OFDM carrier chip; The described power driving circuit and the circuit that accepts filter are connected between OFDM carrier chip and the carrier signal coupling circuit, and described carrier signal coupling circuit is connected with power line, and described zero cross signal produces circuit provides the power frequency zero cross signal to the OFDM carrier chip.
2. a kind of OFDM carrier communication module as claimed in claim 1, wherein said power driving circuit is a class ab ammplifier.
3. a kind of OFDM carrier communication module as claimed in claim 1, wherein said power driving circuit is the D class A amplifier A.
4. a kind of OFDM carrier communication module as claimed in claim 1, wherein said OFDM carrier chip is TA6102A.
5. a kind of OFDM carrier communication module as claimed in claim 1, the wherein said circuit that accepts filter are that cut-off frequency is the high pass filter of 250KHz.
6. a kind of OFDM carrier communication module as claimed in claim 1, wherein said carrier communication module reference carrier frequency is 290KHz-340KHz.
7. a kind of OFDM carrier communication module as claimed in claim 1, wherein said carrier wave coupling circuit are that centre frequency is the impedance matching network of 50KHz for the 315KHz bandwidth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201300635U CN202495963U (en) | 2012-03-31 | 2012-03-31 | OFDM carrier communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201300635U CN202495963U (en) | 2012-03-31 | 2012-03-31 | OFDM carrier communication module |
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| CN202495963U true CN202495963U (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201300635U Expired - Fee Related CN202495963U (en) | 2012-03-31 | 2012-03-31 | OFDM carrier communication module |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024230A (en) * | 2012-12-04 | 2013-04-03 | 深圳市双赢伟业科技股份有限公司 | Power modem device |
| CN103036593A (en) * | 2012-12-30 | 2013-04-10 | 青岛东软载波科技股份有限公司 | Low-voltage power line carrier communication circuit |
| CN103440758A (en) * | 2013-02-04 | 2013-12-11 | 深圳市航天泰瑞捷电子有限公司 | Carrier communication unit in intelligent electrical network environment |
| CN103795442A (en) * | 2013-12-12 | 2014-05-14 | 青岛东软载波科技股份有限公司 | OFDM mode modulation-based low-voltage power line carrier communication circuit |
| CN104020367A (en) * | 2013-03-01 | 2014-09-03 | 北海市聚志电子科技有限公司 | Transformer area user automatic identification system |
| CN104243583A (en) * | 2014-09-16 | 2014-12-24 | 西安电子科技大学 | Environment parameter collecting and remote transmitting system of linear oil extraction motor |
| CN104868910A (en) * | 2015-06-17 | 2015-08-26 | 北京华强智连微电子有限责任公司 | Delay circuit adopting structure in which phase inverters are overlapped in staggered manner |
| CN105788227A (en) * | 2016-05-19 | 2016-07-20 | 国网冀北电力有限公司电力科学研究院 | Electricity consumption information acquisition system fault diagnosis equipment |
| CN107147428A (en) * | 2017-05-23 | 2017-09-08 | 重庆物奇科技有限公司 | A kind of PLC network platform area recognition methods and carrier communication module |
-
2012
- 2012-03-31 CN CN2012201300635U patent/CN202495963U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103024230B (en) * | 2012-12-04 | 2016-05-18 | 深圳市双赢伟业科技股份有限公司 | A kind of Homeplug equipment |
| CN103024230A (en) * | 2012-12-04 | 2013-04-03 | 深圳市双赢伟业科技股份有限公司 | Power modem device |
| CN103036593A (en) * | 2012-12-30 | 2013-04-10 | 青岛东软载波科技股份有限公司 | Low-voltage power line carrier communication circuit |
| CN103036593B (en) * | 2012-12-30 | 2015-01-07 | 青岛东软载波科技股份有限公司 | Low-voltage power line carrier communication circuit |
| CN103440758A (en) * | 2013-02-04 | 2013-12-11 | 深圳市航天泰瑞捷电子有限公司 | Carrier communication unit in intelligent electrical network environment |
| CN103440758B (en) * | 2013-02-04 | 2016-08-10 | 深圳市航天泰瑞捷电子有限公司 | Carrier communication unit under intelligent grid environment |
| CN104020367A (en) * | 2013-03-01 | 2014-09-03 | 北海市聚志电子科技有限公司 | Transformer area user automatic identification system |
| CN103795442A (en) * | 2013-12-12 | 2014-05-14 | 青岛东软载波科技股份有限公司 | OFDM mode modulation-based low-voltage power line carrier communication circuit |
| CN104243583A (en) * | 2014-09-16 | 2014-12-24 | 西安电子科技大学 | Environment parameter collecting and remote transmitting system of linear oil extraction motor |
| CN104868910A (en) * | 2015-06-17 | 2015-08-26 | 北京华强智连微电子有限责任公司 | Delay circuit adopting structure in which phase inverters are overlapped in staggered manner |
| CN105788227A (en) * | 2016-05-19 | 2016-07-20 | 国网冀北电力有限公司电力科学研究院 | Electricity consumption information acquisition system fault diagnosis equipment |
| CN105788227B (en) * | 2016-05-19 | 2021-12-21 | 国网冀北电力有限公司计量中心 | Fault diagnosis equipment for electricity consumption information acquisition system |
| CN107147428A (en) * | 2017-05-23 | 2017-09-08 | 重庆物奇科技有限公司 | A kind of PLC network platform area recognition methods and carrier communication module |
| CN107147428B (en) * | 2017-05-23 | 2020-09-22 | 重庆物奇科技有限公司 | PLC network platform area identification method and carrier communication module |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121017 Termination date: 20170331 |