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CN102904612A - Full-duplex communication method and device based on power line - Google Patents

Full-duplex communication method and device based on power line Download PDF

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Publication number
CN102904612A
CN102904612A CN2012103955180A CN201210395518A CN102904612A CN 102904612 A CN102904612 A CN 102904612A CN 2012103955180 A CN2012103955180 A CN 2012103955180A CN 201210395518 A CN201210395518 A CN 201210395518A CN 102904612 A CN102904612 A CN 102904612A
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zero
power line
cycles
code element
continuous
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CN2012103955180A
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CN102904612B (en
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袁海波
包仁山
李抗英
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BEIJING AIPUZHICHENG NETWORK TECHNOLOGY CO., LTD.
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BEIJING ALONG TECHNOLOGY Co Ltd
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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

Duplex communication method and device based on power line
Technical field
The present invention relates to the communications field, in particular to a kind of duplex communication method based on power line and device.
Background technology
WPLC is the digital semi-duplex communication by power distribution network, its basic principle is that the small distortion of voltage signal or current signal is defined as " 0 " or " 1 ", a plurality of 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, so this distortional strain energy passes through transformer, is equivalent to " 0 " or " 1 " has striden across transformer, thereby so that can be with whole 380V and 10KV circuit all as communication media.Particularly, principle is as follows:
The descending voltage signal of power communication is at signal of electrical network 50HZ voltage waveform near zero-crossing point stack, so that a small distortion occurs near zero passage the 50HZ first-harmonic.Represent one with continuous two cycles, the signal location of stack is different, represents respectively " 1 " or " 0 " of descending voltage signal.As shown in Figure 1, when the signal that superposes in first cycle, be defined as the expression bit " 0 ", as shown in Figure 2, when the stack signal at second period, be defined as the expression bit " 1 ".In communication, data transfer just can have been carried out by the modulation to voltage after determining in basic digit order number " 0 " and " 1 ", yet because with two cycles correspondence digital information bits " 0 " or " 1 ", so transfer rate is 25 bauds.
Therefore for voltage modulated, because distribution transformer has very high leakage reactance can prevent overcurrent, and system capacity becomes minimum at the voltage waveform near zero-crossing point, and the energy requirement required at zero crossing place modulation signal is little, is convenient to modulate.Simultaneously, voltage over zero is special, for signal framing and detection provide convenience.
For current-modulation, at first be by modulating near the 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.
Yet the fastest communication speed of above-mentioned two kinds of carrier communication modes is 25HZ also, and can only carry out half duplex communication and can't carry out full-duplex communication, and the channel utilization index of power line is not high..
For above-mentioned problem, effective solution is proposed not yet at present.
Summary of the invention
The invention provides a kind of duplex communication method based on power line and device, solving at least in the 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 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 the power line with 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 the above-mentioned power line.
Preferably, first device comprises the step that 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 the power line: when above-mentioned first code element of transmission during in " 1 " or " 0 ", 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 when being in " 1 " or " 0 " another, 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 the above-mentioned power line: when above-mentioned second code element of transmission during in " 1 " or " 0 ", 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 when being in " 1 " or " 0 " another, 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, and above-mentioned Zero-crossing Distortion is the Zero-crossing Distortion of above-mentioned voltage signal.
Preferably, the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles that first device transmits by power line is transferred to the first code element before the second device, said method also comprises: dispose 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 the Zero-crossing Distortion of above-mentioned first device by above-mentioned two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on the power line the first code element is transferred to the second device, and indicates 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 the 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; Perhaps 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, the Zero-crossing Distortion that is used for two zero crossings in four zero crossings of the waveform signal by continuous two cycles of transmitting on the power line is transferred to another based on the full-duplex communication device of power line with the first code element; Receiving element, be used for receiving above-mentioned another based on the full-duplex communication device of power line the second code element by 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 the above-mentioned power line.
Preferably, above-mentioned transmission unit comprises: the first modulation module, be used for when above-mentioned the first code element of transmitting is " 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; The second modulation module is used for when above-mentioned the first code element of transmitting is another of " 1 " or " 0 ", 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 Zero-crossing Distortion that is used for two zero crossings in four zero crossings of the waveform signal in continuous two cycles that above-mentioned transmission unit transmits by power line is transferred to the first code element in above-mentioned another full-duplex communication device based on power line, configuration and above-mentioned another based on the master slave relation between the full-duplex communication device of power line.
In the present invention, based on the characteristics of the Zero-crossing Distortion of power line, that is, whether distorted represents bit 0 and 1 can to utilize zero point, utilize the uplink of the Zero-crossing Distortion realization data of two zero crossings wherein, realize again the downlink transfer of data by two other zero crossing.Solved by the way in the 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 based on the full-duplex communication of power line, also improved the channel utilization index of power line simultaneously.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the method for expressing according to bit 1 in the power line carrier communication mode of correlation technique;
Fig. 2 is the method for expressing according to bit 1 in the power line carrier communication mode of correlation technique;
Fig. 3 is a kind of preferred flow charts based on the duplex communication method of power line according to the embodiment of the invention;
Fig. 4 be according to the embodiment of the invention based on the schematic diagram that represents bit 0 and 1 in the duplex communication method of power line by positive half period;
Fig. 5 be according to the embodiment of the invention based on the schematic diagram that represents bit 0 and 1 in the duplex communication method of power line by negative half-cycle;
Fig. 6 is a kind of preferred structure block diagram based on the system of the full-duplex communication of power line according to the embodiment of the invention.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
It is a kind of preferably based on the duplex communication method of power line that the embodiment of the invention provides, and as shown in Figure 3, may further comprise the 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 the power line with the first code element; For example, can transmit the first code element with the Zero-crossing Distortion of the P1 among Fig. 4 and these two zero crossings of P3.
Step S304: the second code element by 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 the power line is installed in first device reception second.For example, corresponding Zero-crossing Distortion with the P2 among Fig. 4 and these two zero crossings of P4 transmits the second code element.
In above-mentioned preferred implementation, based on the characteristics of the Zero-crossing Distortion of power line, that is, whether distorted represents bit 0 and 1 can to utilize zero point, utilize the uplink of the Zero-crossing Distortion realization data of two zero crossings wherein, realize again the downlink transfer of data by two other zero crossing.Solved by the way in the 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 based on the full-duplex communication of power line, also improved the channel utilization index of power line simultaneously.
In order to realize full-duplex communication, because four zero crossings are arranged, can utilize positive half period transmission upward signal within two cycles, utilize the negative half-cycle transmission of downlink signal, thereby realize full-duplex communication.Preferably, first device can comprise the step that 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 the power line: when the first code element of transmission during in " 1 " or " 0 ", 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 when be in " 1 " or " 0 " another, 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.Namely, can be shown in 4 figure, with the signal distortion of the positive half period trailing edge in first cycle as 1, then with the signal of the trailing edge of the positive half period of second period as 0, certainly be preferred embodiment a kind of more than, method for expressing that can " 0 " and " 1 " does not repeat them here conversely.
In the situation with positive half period transmission upward signal, certainly just can use the negative half-cycle transmission of downlink signal, it should be noted that, be to send code element with first device to the second device to be called uply in above-described embodiment, the 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 second device continuous two cycles of transmitting by power line can comprise: when the second code element of transmission during in " 1 " or " 0 ", 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 when be in " 1 " or " 0 " another, 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, with the signal distortion of the negative half-cycle trailing edge in first cycle as 1, then with the trailing edge of the negative half-cycle of second period as 0, certainly be preferred embodiment a kind of more than, method for expressing that can " 0 " and " 1 " does not repeat them here conversely.
Preferably, also can use the positive half period transmission of downlink signal, transmit upward signal with negative half-cycle, present embodiment is not construed as limiting at this.
At first be to modulate near the voltage over zero during in view of current-modulation, 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, and upward signal carries and need to be configured before signal transmission with negative half-cycle, and is preferred, can determine to adopt which kind of mode according to the master slave relation between two devices that intercom mutually.In a preferred implementation, the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles that first device transmits by power line is transferred to the first code element before the second 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 the Zero-crossing Distortion of first device by two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on the power line the first code element is transferred to the second device, and the indication 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 the power line.That is, two master slave relations between the device can be disposed first, then, the data that send with positive half period transmission main equipment can be defined, with the data of negative half-cycle transmission from the equipment transmission, thus effective transmission of realization data.
The below provides the mode of the master slave relation between two terminals of three kinds of configurations, yet 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; Perhaps
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 invention also provides a kind of and as shown in Figure 6, has comprised first device 602 and the second device 604 preferably based on the system of the full-duplex communication of power line, wherein,
First device 602 comprises: the first transmission unit 6022, and the Zero-crossing Distortion that is used for two zero crossings in four zero crossings of the waveform signal by continuous two cycles of transmitting on the power line is transferred to the second device with the first code element; The first receiving element 6024 be used for 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 of the waveform signal in continuous two cycles of transmitting on the power line.
The second device 604 comprises: the second transmission unit 6042, with the coupling of the first receiving element 6024, the Zero-crossing Distortion that is used for two zero crossings in four zero crossings of the waveform signal by continuous two cycles of transmitting on the power line is transferred to first device with the first code element; The second receiving element 6044 with the coupling of the first transmission unit 6022, is used 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 the power line.
In a preferred implementation, above-mentioned the first transmission unit comprises: the first modulation module, be used for when the first code element of transmitting is " 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 continuous two cycles; The second modulation module is used for when the first code element of transmitting is another of " 1 " or " 0 ", 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, be used for when the first code element of transmitting is " 1 " or " 0 " one, and make 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 is used for when the first code element of transmitting is another of " 1 " or " 0 ", 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 above-mentioned full-duplex communication based on power line also comprises: dispensing unit, before the Zero-crossing Distortion that is used for two zero crossings in four zero crossings of the waveform signal in continuous two cycles that transmission unit transmits by power line is transferred to the first code element in the second device, the master slave relation between configuration is installed with another.Wherein, master slave relation is used to indicate the Zero-crossing Distortion of first device by two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on the power line the first code element is transferred to the second device, and the indication 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 the power line.That is, two master slave relations between the device can be disposed first, then, the data that send with positive half period transmission main equipment can be defined, with the data of negative half-cycle transmission from the equipment transmission, thus effective transmission of realization data.
Dispensing unit can be according to the master slave relation between two terminals of one of following three kinds of modes configurations:
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) configuration file by being built in described first device and described the second device is configured described first device and described master slave relation between described the second device, and namely dispensing unit is interior module of device or unit; Perhaps
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 when being positioned at the communication module of terminal, the second device is the communication module that is arranged in concentrator; When first device is when being arranged in the communication module of concentrator, the second device is the communication module that is positioned at terminal.
The combination of the predetermined function of software and/or hardware can realize to(for) term " unit " or " module " of above-mentioned use.Although the described device of following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.
In above-mentioned each preferred implementation, code element is a kind of in the 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 do restriction 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 limits the present invention improperly in order better to describe the present invention, not consist of.
For the fastest communication speed of the communication modes of the power line carrier in correlation technique 25HZ namely, and only can realize half duplex communication, (that is, can only transmit a kind of carrier signal on the power line of same time).In embodiments of the present invention can be with the positive half period of power line as the downlink dedicated communication channel, with the negative half-cycle of power line as up special communication passage.Corresponding 0 and 1 coded system does not repeat them here shown in Figure 4 and 5.
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 the power line, and the signal that collects is carried out demodulation.Because the negative half-cycle of power line is as up special communication passage, therefore when the carrier communication module of terminal need to send carrier wave, with the negative half period ripple of the carrier signal modulation electric line of force behind the coding.
In like manner, the carrier communication module of concentrator only gathers the signal of negative half-cycle on the power line, and the signal that collects is carried out demodulation.Because the positive half period of power line is as the downlink dedicated communication channel, therefore when the carrier communication module of concentrator will send carrier wave, with the positive half cycles of the carrier signal modulation electric line of force behind the coding.
Preferably, as long as control module can be carried out the carrier communication that modulation and demodulation just can be carried out uplink and downlink simultaneously simultaneously.
By the electric line carrier communication mode after the above-mentioned improvement, can carry out simultaneously the up-downgoing full duplex communication, two kinds of carrier signals of uplink and downlink are arranged simultaneously in transmission on the power line, improved the channel utilization index of power line.Carrier communication mode that simultaneously can only be up or descending by original the time, be improved to the current communication modes that can carry out simultaneously up-downgoing, also improved the communication speed of carrier wave, when carrier wave up-downgoing during simultaneously in transmission, the communication speed that is equivalent to carrier wave is 50HZ.
In another embodiment, also provide a kind of software, this software be used for to be carried out the technical scheme that above-described embodiment and preferred implementation are described.
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: based on the characteristics of the Zero-crossing Distortion of power line, namely, whether distorted represents bit 0 and 1 can to utilize zero point, utilize the uplink of the Zero-crossing Distortion realization data of two zero crossings wherein, realize again the downlink transfer of data by two other zero crossing.Solved by the way in the 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 based on the full-duplex communication of 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 each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and 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 modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

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 the power line with 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 the described power line.
2. method according to claim 1 is characterized in that, first device comprises the step that 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 the power line:
When described first code element of transmission when being 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 when being in " 1 " or " 0 " another, 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.
3. method according to claim 1, it is characterized in that 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 the described power line:
When described second code element of transmission when being 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 when being in " 1 " or " 0 " another, 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.
4. according to claim 2 or 3 described methods, it is characterized in that described waveform signal is voltage signal, described Zero-crossing Distortion is the Zero-crossing Distortion of described voltage signal.
5. method according to claim 1, it is characterized in that, the Zero-crossing Distortion of two zero crossings in four zero crossings in the waveform signal in continuous two cycles that first device transmits by power line is transferred to the first code element before the second device, and described method also comprises:
Dispose the master slave relation between described first device and described the second device, wherein, described master slave relation is used to indicate the Zero-crossing Distortion of described first device by described two zero crossings in four zero crossings in the waveform signal in continuous two cycles of transmitting on the 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 the described power line.
6. method according to claim 5 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 between the described first device of third party's communication device configured 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; Perhaps
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.
7. 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.
8. the full-duplex communication device based on power line is characterized in that, comprising:
Transmission unit, the Zero-crossing Distortion that is used for two zero crossings in four zero crossings of the waveform signal by continuous two cycles of transmitting on the power line is transferred to another based on the full-duplex communication device of power line with the first code element;
Receiving element, be used for receiving described another based on the full-duplex communication device of power line the second code element by 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 the described power line.
9. device according to claim 8 is characterized in that, described transmission unit comprises:
The first modulation module is used for when described the first code element of transmitting is " 1 " or " 0 " one, makes 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 is used for when described the first code element of transmitting is another of " 1 " or " 0 ", 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.
10. device according to claim 8 is characterized in that, also comprises:
Dispensing unit, before the Zero-crossing Distortion that is used for two zero crossings in four zero crossings of the waveform signal in continuous two cycles that described transmission unit transmits by power line is transferred to the first code element in described another full-duplex communication device based on power line, configuration and described another based on the master slave relation between the full-duplex communication device of power line.
CN201210395518.0A 2012-10-17 2012-10-17 Full-duplex communication method and device based on power line Active CN102904612B (en)

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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
CN111487456A (en) * 2020-03-27 2020-08-04 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
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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