CN102904615A - Power line carrier communication method - Google Patents
Power line carrier communication method Download PDFInfo
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- CN102904615A CN102904615A CN2012104379766A CN201210437976A CN102904615A CN 102904615 A CN102904615 A CN 102904615A CN 2012104379766 A CN2012104379766 A CN 2012104379766A CN 201210437976 A CN201210437976 A CN 201210437976A CN 102904615 A CN102904615 A CN 102904615A
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Abstract
The invention provides a power line carrier communication method. A signal source end packages data of a data source into a data unit; and the data unit is sent within a time sheet at a zero crossing point of a power line working frequency. By the power line carrier communication method, dozens of bits can be transmitted at the single zero crossing point; and more data transmission requirements can be met.
Description
Technical field
The present invention relates to the power line carrier communication field, particularly a kind of power-line carrier communication method that sends at a high speed long numeric data at the power frequency zero crossing.
Background technology
Power line carrier communication is with the communication mode of high-frequency carrier signal by high pressure or low-voltage power line transmission information.Utilizing the power frequency zero crossing to carry out power line carrier transmission is a kind of common method, and major advantage is that the zero crossing switching noise is few.But at present, in the method for conventional powerline carrier wave power frequency zero crossing communication, only send a data at each zero crossing, as adopting the spreading code mode to explain a data or explaining a data with the waveform of different frequency.Such communication mode can only be applied in the occasion not high to the data rate requirement, if need to transmit the data of higher bandwidth, such as the both-way communication of intelligent grid, then is difficult to satisfy actual needs.
Summary of the invention
The present invention is directed at present, when utilizing the power frequency zero crossing to communicate in the power line carrier communication process, each zero crossing only transmits 1 bit data, and the deficiency that transmission bandwidth can not be satisfied the demand provides a kind of power-line carrier communication method that transmits long numeric data at each zero crossing.
The present invention for the technical scheme of finishing its technical purpose and adopting is: a kind of power-line carrier communication method, and the information source end is packaged into data cell with the data of data source, sends described data cell in the timeslice of power line power frequency zero crossing,
May further comprise the steps at the information source end:
The step that the digital signal of data cell is modulated;
The step that modulation signal is sent in the power frequency zero crossing timeslice;
May further comprise the steps at stay of two nights end:
Receive the step of modulation signal in the power frequency zero crossing timeslice;
The modulation signal demodulation that receives is obtained the step of the digital signal of data cell.
Further, in the above-mentioned power-line carrier communication method: the step that also comprises the information source coding at the information source end; The step that comprises corresponding decoding at stay of two nights end.
Further, in the above-mentioned power-line carrier communication method: described information source coding may further comprise the steps:
The step that data cell is encoded;
The step that adds synchronizing signal in the data behind coding.
Further, in the above-mentioned power-line carrier communication method: adding in the step of synchronizing signal in the data behind coding, is that synchronizing signal is joined coded data central authorities.
Further, in the above-mentioned power-line carrier communication method: also be included in the step that data both sides behind the coding add redundant code.
Further, in the above-mentioned power-line carrier communication method: the step that data cell is encoded is to adopt Manchester coding mode.
Further, in the above-mentioned power-line carrier communication method: described synchronizing signal is the combination of any at least three continuous " 0 " or three continuous " 1 ".
Further, in the above-mentioned power-line carrier communication method: described synchronizing signal is " 111000 " or " 000111 ".
Further, in the above-mentioned power-line carrier communication method: described modulation system is BFSK.
The present invention can at tens bits of single zero crossing transmission, can satisfy more transfer of data demand.
Below by specific embodiment by reference to the accompanying drawings the present invention is further detailed.
Description of drawings
Accompanying drawing 1, embodiment of the invention carrier signal figure.
The situation schematic diagram that receives when accompanying drawing 2, the drift of embodiment of the invention stay of two nights termination receiving end generation zero crossing.
Embodiment
The present embodiment is that each 1.5ms is as the zero-crossing timing sheet before and after choosing zero crossing, and length is 3ms.Example is being divided into 48 bits in the 3ms, every bit 62.5us, and middle 6 bits (000111) are as synchronous code.Each 16 bit is used for data before and after the synchronous code, adopts Manchester's code, and 01 represents 0,10 represents 1, and then respectively there are 8 Bit datas front and back.Remaining 10 bits are each 5 bit up front and backmost, is used for eliminating the zero crossing deviation that receives and send.Redundant data can be check code, must also represent with Manchester's code.
The effect of this example can be transmitted 1600Bps when the 50HZ alternating current, each 5 bit of front and back redundant data, the zero crossing deviation that can stand 5*62.5=312.5us.
Information source end concrete steps are as follows:
Data to be transferred is broken according to data unit of every 16bit;
Data to each data cell are carried out Manchester's code, and represent 0,10 and represent 1 this moment 01;
In the middle of the Manchester's code of each data cell, add " 111000 ", make the data of each 8bit of " 111000 " front and back;
The data both sides of each 8bit respectively add the redundant data of 5bit before and after " 111000 ";
Above-mentioned data are carried out the BFSK modulation;
Modulation signal is sent in the timeslice of the 3ms centered by the power frequency zero crossing.
As follows in stay of two nights end concrete steps:
In the timeslice of the 3ms centered by the power frequency zero crossing, receive the BFSK modulation signal;
The BFSK signal is carried out demodulation;
Obtain synchronous code " 111000 ";
Obtain each 8bit manchester encoded data of synchronous code both sides, every bit data are " 01 " or " 10 " two;
Carry out manchester decoder, obtain altogether 16bit data, and all data acquisition systems that will obtain are preserved.
Claims (9)
1. power-line carrier communication method, it is characterized in that: the information source end is packaged into data cell with the data of data source, sends described data cell in the timeslice of power line power frequency zero crossing,
May further comprise the steps at the information source end:
The step that the digital signal of data cell is modulated;
The step that modulation signal is sent in the power frequency zero crossing timeslice;
May further comprise the steps at stay of two nights end:
Receive the step of modulation signal in the power frequency zero crossing timeslice;
The modulation signal demodulation that receives is obtained the step of the digital signal of data cell.
2. power-line carrier communication method according to claim 1 is characterized in that: the step that also comprises the information source coding at the information source end; The step that comprises corresponding decoding at stay of two nights end.
3. power-line carrier communication method according to claim 2 is characterized in that: described information source coding may further comprise the steps:
The step that data cell is encoded;
The step that adds synchronizing signal in the data behind coding.
4. power-line carrier communication method according to claim 3 is characterized in that: in the step of adding synchronizing signal, be that synchronizing signal is joined coded data central authorities in the data behind coding.
5. power-line carrier communication method according to claim 4 is characterized in that: also be included in the step that data both sides behind the coding add redundant code.
6. it is characterized in that according to claim 3 or 4 or 5 described power-line carrier communication methods: the step that data cell is encoded is to adopt Manchester coding mode.
7. power-line carrier communication method according to claim 6 is characterized in that: described synchronizing signal is the arbitrarily combination of at least three continuous " 0 " or three continuous " 1 ".
8. power-line carrier communication method according to claim 6 is characterized in that: described synchronizing signal is " 111000 " or " 000111 ".
9. according to claim 1, arbitrary described power-line carrier communication method in 2,3,4,5, it is characterized in that: described modulation system is BFSK.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210437976.6A CN102904615B (en) | 2012-11-06 | 2012-11-06 | Power line carrier communication method |
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| CN201210437976.6A CN102904615B (en) | 2012-11-06 | 2012-11-06 | Power line carrier communication method |
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| CN102904615A true CN102904615A (en) | 2013-01-30 |
| CN102904615B CN102904615B (en) | 2015-02-11 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103227663A (en) * | 2013-03-28 | 2013-07-31 | 柳州市智博科技有限公司 | Carrier wave communication method realizing power line carrier wave communication |
| CN103532594A (en) * | 2013-10-18 | 2014-01-22 | 北京福星晓程电子科技股份有限公司 | Power line-based communication method and power line-based communication device |
| CN103763822A (en) * | 2014-01-07 | 2014-04-30 | 重庆恒又源科技发展有限公司 | Control information transmitting system and control information sending and receiving method and device |
| CN104283585A (en) * | 2013-07-10 | 2015-01-14 | 中国船舶重工集团公司第七二二研究所 | Low-voltage power line carrier communication method |
| CN105991499A (en) * | 2015-02-06 | 2016-10-05 | 钜泉光电科技(上海)股份有限公司 | OFDM power-frequency synchronous power carrier communication and physical layer coded modulation method |
| CN110943762A (en) * | 2019-10-17 | 2020-03-31 | 珠海格力电器股份有限公司 | Direct-current power line carrier communication method based on differential Manchester coding and air conditioner |
| CN111030732A (en) * | 2019-12-16 | 2020-04-17 | 福州准点信息科技有限公司 | Power line zero-crossing communication system |
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| CN101741428A (en) * | 2010-01-12 | 2010-06-16 | 国电龙源电气有限公司 | Electric line carrier communication circuit and modulating and demodulating methods thereof |
| CN102611481A (en) * | 2012-03-16 | 2012-07-25 | 北京福星晓程电子科技股份有限公司 | Power line carrier communication method and power line carrier communication system |
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2012
- 2012-11-06 CN CN201210437976.6A patent/CN102904615B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101741428A (en) * | 2010-01-12 | 2010-06-16 | 国电龙源电气有限公司 | Electric line carrier communication circuit and modulating and demodulating methods thereof |
| CN102611481A (en) * | 2012-03-16 | 2012-07-25 | 北京福星晓程电子科技股份有限公司 | Power line carrier communication method and power line carrier communication system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103227663A (en) * | 2013-03-28 | 2013-07-31 | 柳州市智博科技有限公司 | Carrier wave communication method realizing power line carrier wave communication |
| CN104283585A (en) * | 2013-07-10 | 2015-01-14 | 中国船舶重工集团公司第七二二研究所 | Low-voltage power line carrier communication method |
| CN103532594A (en) * | 2013-10-18 | 2014-01-22 | 北京福星晓程电子科技股份有限公司 | Power line-based communication method and power line-based communication device |
| CN103532594B (en) * | 2013-10-18 | 2016-06-08 | 北京福星晓程电子科技股份有限公司 | Based on communication method and the device of power line |
| CN103763822A (en) * | 2014-01-07 | 2014-04-30 | 重庆恒又源科技发展有限公司 | Control information transmitting system and control information sending and receiving method and device |
| CN103763822B (en) * | 2014-01-07 | 2017-03-22 | 重庆恒又源科技发展有限公司 | Control information transmitting system and control information sending and receiving method and device |
| CN105991499A (en) * | 2015-02-06 | 2016-10-05 | 钜泉光电科技(上海)股份有限公司 | OFDM power-frequency synchronous power carrier communication and physical layer coded modulation method |
| CN105991499B (en) * | 2015-02-06 | 2019-09-13 | 钜泉光电科技(上海)股份有限公司 | The synchronous power line carrier, PLC of OFDM power frequency and physical level coded modulation method |
| CN110943762A (en) * | 2019-10-17 | 2020-03-31 | 珠海格力电器股份有限公司 | Direct-current power line carrier communication method based on differential Manchester coding and air conditioner |
| CN111030732A (en) * | 2019-12-16 | 2020-04-17 | 福州准点信息科技有限公司 | Power line zero-crossing communication system |
| CN111030732B (en) * | 2019-12-16 | 2021-06-01 | 福州准点信息科技有限公司 | Power line zero-crossing communication system |
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| CN102904615B (en) | 2015-02-11 |
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Owner name: SHENZHEN CORE LONG ELECTRONIC TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHU WENWEN Effective date: 20150722 |
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Effective date of registration: 20150722 Address after: 7 B building, building five, Longjing second industrial zone, Pearl Dragon Road, Nanshan District, Shenzhen, Guangdong 518000, China Patentee after: Shenzhen long core electronic technology Co Ltd Address before: 518000 Guangdong city of Shenzhen province in Longjing Nanshan District North Industrial Zone 9 05 Patentee before: Zhu Wenwen |