CN102904612B - Full-duplex communication method and device based on power line - Google Patents
Full-duplex communication method and device based on power line Download PDFInfo
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Abstract
The invention discloses a full-duplex communication method and device based on a power line. The method comprises the following steps that: a first device transmits a first code element to a second device through the zero-crossing distortion of two zero-crossing points (P1 and P3) in four zero-crossing points in waveform signals of two continuous periods transmitted on the power line; and the first device receives a second code element transmitted by a second device through the zero-crossing distortion of the other two zero-crossing points (P2, P4) in the four zero-crossing points in the waveform signals of the two continuous periods transmitted on the power line. According to the method and the device, the technical problems of low transmission rate and difficulty in realizing full-duplex communication caused by the representation of a binary bit through two continuous periods in the prior art are solved, the technical effect of full-duplex communication based on the power line is realized, and the channel utilization ratio of the power line is increased simultaneously.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of duplex communication method and device based on power line.
Background technology
WPLC is the digital semi-duplex communication by power distribution network, its general principle is that the small distortion of voltage signal or current signal is defined as to " 0 " or " 1 ", multiple different distortion are equivalent to the continuity of " 0 " and " 1 ", are similar to by power network " sending a telegram ".Because the band spreading of the distorted signal of voltage or electric current is generally between 200-600Hz, therefore this distortional strain energy passes through transformer, is equivalent to " 0 " or " 1 " has striden across transformer, can be using whole 380V and 10KV circuit all as communication media thereby make.Particularly, principle is as follows:
The descending voltage signal of power communication is at a signal of electrical network 50HZ voltage waveform near zero-crossing point stack, makes 50HZ first-harmonic that a small distortion occur near zero passage.Represent one with continuous two cycles, the signal location difference of stack, represents respectively " 1 " or " 0 " of descending voltage signal.As shown in Figure 1, when superposeed signal is in first cycle, be defined as and represent bit " 0 ", as shown in Figure 2, when the signal superposeing is at second period, be defined as and represent bit " 1 ".In communication, after basic digit order number " 0 " and " 1 " are determined, just can be by the modulation of voltage has been carried out to the transmission of data, but because by two cycles digital information bits of correspondence " 0 " or " 1 ", therefore transfer rate is 25 bauds.
For voltage modulated, therefore can prevent overcurrent because distribution transformer has very high leakage reactance, and system capacity becomes minimum at voltage waveform near zero-crossing point, the energy requirement required at zero crossing place modulation signal is little, is convenient to modulate.Meanwhile, voltage over zero is special, for signal framing and detection provide convenience.
For current-modulation, be first by modulating near voltage over zero, the controllable silicon transient switching of corresponding voltage near zero-crossing point, electric current also produces spike deformation.Current modulated is digit order numbers of 4 period definitions " 0 " or " 1 ", and communication speed is 12.5 bauds.
But the fastest communication speed of above-mentioned two kinds of carrier communication modes is also 25HZ, and can only carry out half duplex communication and cannot carry out full-duplex communication, the channel utilization index of power line is not high..
For above-mentioned problem, effective solution is not yet proposed at present.
Summary of the invention
The invention provides a kind of duplex communication method and device based on power line, at least to solve in prior art owing to utilizing the transmission rate that continuous two cycles represent that a binary bit causes low, and be difficult to realize the technical problem of full-duplex communication.
According to an aspect of the present invention, a kind of duplex communication method based on power line is provided, has comprised: first device has been transferred to the second device by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line by the first code element; Above-mentioned first device receives above-mentioned the second device by the second code element of the Zero-crossing Distortion transmission of two other zero crossing in above-mentioned four zero crossings in the waveform signal in above-mentioned continuous two cycles of transmitting on above-mentioned power line.
Preferably, the step that first device is transferred to the second device by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line by the first code element comprises: when above-mentioned first code element of transmission is during in " 1 " or " 0 " one, make the trailing edge generation Zero-crossing Distortion of the positive half period in first cycle in the waveform signal in above-mentioned continuous two cycles; When above-mentioned first code element of transmission is while being another in " 1 " or " 0 ", make the trailing edge generation Zero-crossing Distortion of the positive half period in the second period in the waveform signal in above-mentioned continuous two cycles.
Preferably, above-mentioned the second device comprises by the step of the second code element of the Zero-crossing Distortion transmission of two other zero crossing in above-mentioned four zero crossings in the waveform signal in above-mentioned continuous two cycles of transmitting on above-mentioned power line: when above-mentioned second code element of transmission is during in " 1 " or " 0 " one, make the rising edge generation Zero-crossing Distortion of the negative half-cycle in first cycle in the waveform signal in above-mentioned continuous two cycles; When above-mentioned second code element of transmission is while being another in " 1 " or " 0 ", make the rising edge generation Zero-crossing Distortion of the negative half-cycle in the second period in the waveform signal in above-mentioned continuous two cycles.
Preferably, above-mentioned waveform signal is voltage signal, the Zero-crossing Distortion that above-mentioned Zero-crossing Distortion is above-mentioned voltage signal.
Preferably, before the first code element is transferred to the second device by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on by power line at first device, said method also comprises: configure the master slave relation between above-mentioned first device and above-mentioned the second device, wherein, above-mentioned master slave relation is used to indicate above-mentioned first device, by the Zero-crossing Distortion of above-mentioned two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line, the first code element is transferred to the second device, and indicate above-mentioned first device to receive above-mentioned the second device by the second code element of the Zero-crossing Distortion transmission of above-mentioned two other zero crossing in above-mentioned four zero crossings in the waveform signal in above-mentioned continuous two cycles of transmitting on above-mentioned power line.
Preferably, the step of master slave relation between the above-mentioned first device of above-mentioned configuration and above-mentioned the second device comprise following one of at least: the above-mentioned master slave relation between the above-mentioned first device of third party's communication device configured installs with above-mentioned second; By the configuration file that is built in above-mentioned first device and above-mentioned the second device, the above-mentioned master slave relation between above-mentioned first device and above-mentioned the second device is configured; Or above-mentioned first device and above-mentioned the second device hold consultation to determine the above-mentioned master slave relation between above-mentioned first device and above-mentioned the second device.
Preferably, one in above-mentioned first device and above-mentioned the second device is the communication module that is positioned at terminal, and another in above-mentioned first device and above-mentioned the second device is the communication module that is arranged in concentrator.
According to a further aspect in the invention, a kind of full-duplex communication device based on power line is provided, comprise: transmission unit, is transferred to another full-duplex communication device based on power line for the Zero-crossing Distortion of two zero crossings in four zero crossings of the waveform signal in continuous two cycles by transmitting on power line by the first code element; Receiving element, for receiving above-mentioned another full-duplex communication device based on power line by the second code element of the Zero-crossing Distortion transmission of two other zero crossing in above-mentioned four zero crossings of the waveform signal in above-mentioned continuous two cycles of transmitting on above-mentioned power line.
Preferably, above-mentioned transmission unit comprises: the first modulation module, when being " 1 " or " 0 " one when above-mentioned the first code element of transmitting, make the trailing edge generation Zero-crossing Distortion of the positive half period in first cycle in the waveform signal in above-mentioned continuous two cycles; The second modulation module, when being another of " 1 " or " 0 " when above-mentioned first code element of transmission, makes the trailing edge generation Zero-crossing Distortion of the positive half period in the second period in the waveform signal in above-mentioned continuous two cycles.
Preferably, said apparatus also comprises: dispensing unit, before the first code element being transferred to above-mentioned another full-duplex communication device based on power line for the Zero-crossing Distortion of two zero crossings in four zero crossings of the waveform signal in continuous two cycles of transmitting on by power line at above-mentioned transmission unit, the master slave relation between configuration and above-mentioned another full-duplex communication device based on power line.
In the present invention, the feature of the Zero-crossing Distortion based on power line, that is, whether can utilize occurs to distort zero point represents bit 0 and 1, utilize the Zero-crossing Distortion of two zero crossings wherein to realize the uplink of data, then realize the downlink transfer of data by two other zero crossing.Solve by the way in prior art owing to utilizing the transmission rate that continuous two cycles represent that a binary bit causes low, and be difficult to realize the technical problem of full-duplex communication, realize the technique effect of the full-duplex communication based on power line, also improved the channel utilization index of power line simultaneously.
Brief description of the drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the method for expressing of bit 1 in the power line carrier communication mode of correlation technique;
Fig. 2 is according to the method for expressing of bit 1 in the power line carrier communication mode of correlation technique;
Fig. 3 is according to a kind of preferred flow charts of the duplex communication method based on power line of the embodiment of the present invention;
Fig. 4 is according to the schematic diagram that represents bit 0 and 1 in the duplex communication method based on power line of the embodiment of the present invention by positive half period;
Fig. 5 is according to the schematic diagram that represents bit 0 and 1 in the duplex communication method based on power line of the embodiment of the present invention by negative half-cycle;
Fig. 6 is a kind of preferred structure block diagram according to the system of the full-duplex communication based on power line of the embodiment of the present invention.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
The embodiment of the present invention provides a kind of preferred duplex communication method based on power line, as shown in Figure 3, comprises the following steps:
Step S302: first device is transferred to the second device by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line by the first code element; For example, can transmit the first code element with the Zero-crossing Distortion of the P1 in Fig. 4 and these two zero crossings of P3.
Step S304: first device receives the second device by the second code element of the Zero-crossing Distortion transmission of two other zero crossing in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line.For example, transmit the second code element with the Zero-crossing Distortion of the P2 in Fig. 4 and these two zero crossings of P4 accordingly.
In above-mentioned preferred implementation, the feature of the Zero-crossing Distortion based on power line, that is, whether can utilize occurs to distort zero point represents bit 0 and 1, utilize the Zero-crossing Distortion of two zero crossings wherein to realize the uplink of data, then realize the downlink transfer of data by two other zero crossing.Solve by the way in prior art owing to utilizing the transmission rate that continuous two cycles represent that a binary bit causes low, and be difficult to realize the technical problem of full-duplex communication, realize the technique effect of the full-duplex communication based on power line, also improved the channel utilization index of power line simultaneously.
In order to realize full-duplex communication, because there are four zero crossings within two cycles, can utilize positive half period transmission upward signal, utilize negative half-cycle transmission of downlink signal, thereby realize full-duplex communication.Preferably, the step that first device is transferred to the second device by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line by the first code element can comprise: when the first code element of transmission is during in " 1 " or " 0 " one, make the trailing edge (corresponding to P1) of the positive half period in first cycle in the waveform signal in continuous two cycles that Zero-crossing Distortion occur; When the first code element of transmission is while be another in " 1 " or " 0 ", make trailing edge (corresponding to P3) the generation Zero-crossing Distortion of the positive half period in the second period in the waveform signal in continuous two cycles.; can be as shown in 4 figure; using the signal distortion of the positive half period trailing edge in first cycle as 1; then using the signal of the trailing edge of the positive half period of second period as 0; certainly above just one preferred embodiment; method for expressing that can " 0 " and " 1 " conversely, does not repeat them here.
With positive half period transmission upward signal in the situation that, certainly just can use negative half-cycle transmission of downlink signal, it should be noted that, in above-described embodiment, be to send code element with first device to the second device to be called uply, second device sends code element to first device and is called that lower behavior example describes.The step of second code element (descending code element) of the Zero-crossing Distortion transmission of two other zero crossing in four zero crossings in the waveform signal in continuous two cycles of transmitting on by power line at the second device can comprise: when the second code element of transmission is during in " 1 " or " 0 " one, make the rising edge (corresponding to P2) of the negative half-cycle in first cycle in the waveform signal in continuous two cycles that Zero-crossing Distortion occur; When the second code element of transmission is while be another in " 1 " or " 0 ", make rising edge (corresponding to P4) the generation Zero-crossing Distortion of the negative half-cycle in the second period in the waveform signal in continuous two cycles.That is, can be as shown in Figure 5, using the signal distortion of the negative half-cycle trailing edge in first cycle as 1, then using the trailing edge of the negative half-cycle of second period as 0, certainly preferred embodiment, method for expressing that can " 0 " and " 1 " conversely, does not repeat them here above just one.
Preferably, also can use positive half period transmission of downlink signal, transmit upward signal with negative half-cycle, the present embodiment is in this no limit.
During in view of current-modulation, be first to modulate near voltage over zero, the controllable silicon transient switching of corresponding voltage near zero-crossing point, electric current also produces spike deformation, 4 digit order numbers of period definition " 0 " or " 1 " during for current modulated, therefore, its corresponding transmission rate is lower one times than voltage modulated.In a preferred implementation, above-mentioned waveform signal is preferably voltage signal, and corresponding above-mentioned Zero-crossing Distortion is preferably the Zero-crossing Distortion of voltage signal.
So upward signal is carried with positive half period, downstream signal carries with negative half-cycle; Or downstream signal carries with positive half period, upward signal carries and need to before signal transmission, be configured with negative half-cycle, preferred, can determine which kind of mode that adopts according to the master slave relation between two devices that intercom mutually.In a preferred implementation, before the first code element is transferred to the second device by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on by power line at first device, said method also comprises: the master slave relation between configuration first device and the second device, wherein, master slave relation is used to indicate first device, by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line, the first code element is transferred to the second device, and indicate first device reception second to install the second code element of the Zero-crossing Distortion transmission of two other zero crossing in four zero crossings in the waveform signal in continuous two cycles by transmitting on power line.That is, can first configure two master slave relations between device, then, can define the data that send with positive half period transmission main equipment, transmit the data that send from equipment with negative half-cycle, thereby realize effective transmission of data.
Provide the mode of the master slave relation between two terminals of three kinds of configurations below, but the invention is not restricted to this, can also adopt other configuration mode to be configured:
1) master slave relation between third party's communication device configured first device and the second device;
2) by the configuration file that is built in first device and the second device, the master slave relation between first device and the second device is configured; Or
3) first device and the second device hold consultation to determine the master slave relation between first device and the second device.
On the basis of above-mentioned each preferred implementation, one in first device and the second device can be the communication module that is positioned at terminal, and another in first device and the second device can be the communication module that is arranged in concentrator.
The embodiment of the present invention also provides a kind of system of the preferred full-duplex communication based on power line, as shown in Figure 6, comprises first device 602 and the second device 604, wherein,
First device 602 comprises: the first transmission unit 6022, is transferred to the second device for the Zero-crossing Distortion of two zero crossings in four zero crossings of the waveform signal in continuous two cycles by transmitting on power line by the first code element; The first receiving element 6024, for receiving the second device by the second code element of the Zero-crossing Distortion transmission of two other zero crossing in four zero crossings of the waveform signal in continuous two cycles of transmitting on power line.
The second device 604 comprises: the second transmission unit 6042, be coupled with the first receiving element 6024, for the Zero-crossing Distortion of two zero crossings in four zero crossings of the waveform signal in continuous two cycles by transmitting on power line, the first code element be transferred to first device; The second receiving element 6044, is coupled with the first transmission unit 6022, for receiving first device by the second code element of the Zero-crossing Distortion transmission of two other zero crossing in four zero crossings of the waveform signal in continuous two cycles of transmitting on power line.
In a preferred implementation, above-mentioned the first transmission unit comprises: the first modulation module, when being " 1 " or " 0 " one when the first code element of transmitting, make the trailing edge generation Zero-crossing Distortion of the positive half period in first cycle in the waveform signal in continuous two cycles; The second modulation module, when being another of " 1 " or " 0 " when the first code element of transmission, makes the trailing edge generation Zero-crossing Distortion of the positive half period in the second period in the waveform signal in continuous two cycles.
Above-mentioned the second transmission unit comprises: the 3rd modulation module, when being " 1 " or " 0 " one when the first code element of transmission, makes the trailing edge generation Zero-crossing Distortion of the negative half-cycle in first cycle in the waveform signal in continuous two cycles; The 4th modulation module, when being another of " 1 " or " 0 " when the first code element of transmission, makes the trailing edge generation Zero-crossing Distortion of the negative half-cycle in the second period in the waveform signal in continuous two cycles.
Preferably, the system of the above-mentioned full-duplex communication based on power line also comprises: dispensing unit, before the first code element being transferred to the second device for the Zero-crossing Distortion of two zero crossings in four zero crossings of the waveform signal in continuous two cycles of transmitting on by power line at transmission unit, the master slave relation of configuration between installing with another.Wherein, master slave relation is used to indicate first device, by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line, the first code element is transferred to the second device, and indicates first device to receive the second device by the second code element of the Zero-crossing Distortion transmission of two other zero crossing in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line.That is, can first configure two master slave relations between device, then, can define the data that send with positive half period transmission main equipment, transmit the data that send from equipment with negative half-cycle, thereby realize effective transmission of data.
Dispensing unit can configure the master slave relation between two terminals according to one of following three kinds of modes:
1) the described master slave relation between third party's communication device configured first device and described the second device, that is, dispensing unit is third party's communication equipment;
2) be configured by being built in the described master slave relation of the configuration file of described first device and described the second device between described first device is installed with described second, dispensing unit is module or the unit in device; Or
3) first device and the second device hold consultation to determine the master slave relation between first device and the second device.
In a preferred implementation, first device and the second device are the communication modules that is arranged in the communication module of terminal or is positioned at concentrator.Preferably, when first device is while being positioned at the communication module of terminal, the second device is the communication module that is arranged in concentrator; When first device is while being arranged in the communication module of concentrator, the second device is the communication module that is positioned at terminal.
Can realize the combination of software and/or the hardware of predetermined function for the term " unit " of above-mentioned use or " module ".Although the described device of following examples is preferably realized with software, hardware, or the realization of the combination of software and hardware also may and be conceived.
In above-mentioned each preferred implementation, code element is the one in data, above-mentionedly only describe as an example of code element example, and can also be the data of other type accordingly, the present invention does not limit at this.
The invention provides a kind of preferred embodiment and come further the present invention to be made an explanation, but it should be noted that the preferred embodiment, just in order better to describe the present invention, does not form the present invention is limited improperly.
For the fastest namely 25HZ of communication speed of the communication modes of the power line carrier in correlation technique, and only can realize half duplex communication, (, on power line of same time, can only transmit a kind of carrier signal).In embodiments of the present invention can be using the positive half period of power line as downlink dedicated communication channel, using the negative half-cycle of power line as up special communication passage.Corresponding 0 and 1 coded system as shown in Figures 4 and 5, does not repeat them here.
Based on above-mentioned full-duplex communication, corresponding control mode is as follows:
Be positioned at the carrier communication module of terminal, only gather the signal of positive half period on power line, and the signal collecting is carried out to demodulation.Because the negative half-cycle of power line is as up special communication passage, therefore in the time that the carrier communication module of terminal need to send carrier wave, by the negative half period ripple of the carrier signal modulation electric line of force after coding.
In like manner, the carrier communication module of concentrator, only gathers the signal of negative half-cycle on power line, and the signal collecting is carried out to demodulation.Because the positive half period of power line is as downlink dedicated communication channel, therefore in the time that the carrier communication module of concentrator will send carrier wave, by the positive half cycles of the carrier signal modulation electric line of force after coding.
Preferably, as long as the carrier communication that control module can be carried out modulation and demodulation and just can be carried out uplink and downlink simultaneously simultaneously.
By the electric line carrier communication mode after above-mentioned improvement, can carry out up-downgoing full duplex communication simultaneously, on power line, there are two kinds of carrier signals of uplink and downlink in transmission simultaneously, improve the channel utilization index of power line.Carrier communication mode that simultaneously can only be up or descending by original time, be improved to the current communication modes that can simultaneously carry out up-downgoing, also improved the communication speed of carrier wave, when the carrier wave up-downgoing while is in the time transmitting, the communication speed that is equivalent to carrier wave is 50HZ.
In another embodiment, also provide a kind of software, the technical scheme that this software is described for carrying out above-described embodiment and preferred implementation.
In another embodiment, also provide a kind of storage medium, stored above-mentioned software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.
From above description, can find out, the present invention has realized following technique effect: the feature of the Zero-crossing Distortion based on power line,, whether can utilize occurs to distort zero point represents bit 0 and 1, utilize the Zero-crossing Distortion of two zero crossings wherein to realize the uplink of data, then realize the downlink transfer of data by two other zero crossing.Solve by the way in prior art owing to utilizing the transmission rate that continuous two cycles represent that a binary bit causes low, and the technical problem that is difficult to realize full-duplex communication has realized the technique effect of the full-duplex communication based on power line, has also improved the channel utilization index of power line simultaneously.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that multiple calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or the multiple modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. the duplex communication method based on power line, is characterized in that, comprising:
First device is transferred to the second device by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line by the first code element;
Described first device receives described the second device by the second code element of the Zero-crossing Distortion transmission of two other zero crossing in described four zero crossings in the waveform signal in described continuous two cycles of transmitting on described power line;
Wherein, the step that first device is transferred to the second device by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line by the first code element comprises: when described first code element of transmission is during in " 1 " or " 0 " one, make the trailing edge generation Zero-crossing Distortion of the positive half period in first cycle in the waveform signal in described continuous two cycles; When described first code element of transmission is while being another in " 1 " or " 0 ", make the trailing edge generation Zero-crossing Distortion of the positive half period in the second period in the waveform signal in described continuous two cycles;
Wherein, described the second device comprises by the step of the second code element of the Zero-crossing Distortion transmission of two other zero crossing in described four zero crossings in the waveform signal in described continuous two cycles of transmitting on described power line: when described second code element of transmission is during in " 1 " or " 0 " one, make the rising edge generation Zero-crossing Distortion of the negative half-cycle in first cycle in the waveform signal in described continuous two cycles; When described second code element of transmission is while being another in " 1 " or " 0 ", make the rising edge generation Zero-crossing Distortion of the negative half-cycle in the second period in the waveform signal in described continuous two cycles.
2. method according to claim 1, is characterized in that, described waveform signal is voltage signal, the Zero-crossing Distortion that described Zero-crossing Distortion is described voltage signal.
3. method according to claim 1, it is characterized in that, before the first code element is transferred to the second device by the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on by power line at first device, described method also comprises:
Configure the master slave relation between described first device and described the second device, wherein, described master slave relation is used to indicate described first device, by the Zero-crossing Distortion of described two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on power line, the first code element is transferred to the second device, and indicates described first device to receive described the second device by the second code element of the Zero-crossing Distortion transmission of described two other zero crossing in described four zero crossings in the waveform signal in described continuous two cycles of transmitting on described power line.
4. method according to claim 3, is characterized in that, the step of master slave relation between the described first device of described configuration and described the second device comprise following one of at least:
Described master slave relation described in third party's communication device configured between first device and described the second device;
By the configuration file that is built in described first device and described the second device, the described master slave relation between described first device and described the second device is configured; Or
Described first device and described the second device hold consultation to determine the described master slave relation between described first device and described the second device.
5. method according to claim 1, is characterized in that, one in described first device and described the second device is the communication module that is positioned at terminal, and another in described first device and described the second device is the communication module that is arranged in concentrator.
6. the full-duplex communication device based on power line, is characterized in that, comprising:
Transmission unit, is transferred to another full-duplex communication device based on power line for the Zero-crossing Distortion of two zero crossings in four zero crossings of the waveform signal in continuous two cycles by transmitting on power line by the first code element;
Receiving element, for receiving described another full-duplex communication device based on power line by the second code element of the Zero-crossing Distortion transmission of two other zero crossing in described four zero crossings of the waveform signal in described continuous two cycles of transmitting on described power line;
Wherein, described transmission unit comprises: the first modulation module, when being " 1 " or " 0 " one when described the first code element of transmitting, make the trailing edge generation Zero-crossing Distortion of the positive half period in first cycle in the waveform signal in described continuous two cycles; The second modulation module, when being another of " 1 " or " 0 " when described first code element of transmission, makes the trailing edge generation Zero-crossing Distortion of the positive half period in the second period in the waveform signal in described continuous two cycles.
7. device according to claim 6, is characterized in that, also comprises:
Dispensing unit, before the first code element being transferred to described another full-duplex communication device based on power line for the Zero-crossing Distortion of two zero crossings in four zero crossings of the waveform signal in continuous two cycles of transmitting on by power line at described transmission unit, the master slave relation between configuration and described another full-duplex communication device based on power line.
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| EP3293845A1 (en) * | 2016-09-08 | 2018-03-14 | Alcatel Lucent | Circuit breaker for power line communication |
| 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 |
| CN111487456B (en) * | 2020-03-27 | 2021-11-16 | 威胜信息技术股份有限公司 | Method and system for extracting characteristic signal from power frequency signal and file management method |
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