CN106448122A - System and method for achieving data transmission directly through power line - Google Patents
System and method for achieving data transmission directly through power line Download PDFInfo
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- CN106448122A CN106448122A CN201610107357.9A CN201610107357A CN106448122A CN 106448122 A CN106448122 A CN 106448122A CN 201610107357 A CN201610107357 A CN 201610107357A CN 106448122 A CN106448122 A CN 106448122A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/546—Combination of signalling, telemetering, protection
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Abstract
The invention discloses a system and method for achieving data transmission directly through a power line. The system comprises at least one intelligent controller. The intelligent controller receives a power-grid power supply signal and outputs a power supply signal through a power line, the power supply signal output end of the intelligent controller is connected with a plurality of data transceivers in parallel through an alternating current power supply line, and the intelligent controller supplies power to the data transceivers and achieves data transmission between the intelligent controller and the data transceivers; the intelligent controller transmits data to the data transceivers by encoding an alternating voltage signal in the power line, and the data transceivers transmit data to the intelligent controller by encoding an alternating current signal in the power line. According to the technical scheme, transmission carried out directly through the power line is achieved through a simple circuit structure, it is accordingly not required that a data transmission network is reconstructed, and it is also not required that a high-frequency carrier signal is loaded in the power line.
Description
Technical field
The invention belongs to field of intelligent control, more particularly, to a kind of directly using electric lines of force realize data transfer system and
Method.
Background technology
In prior art, electric lines of force mostly just plays the effect of transmission electric energy, provides exchange to supply for various electrical equipments
Piezoelectric voltage.With the continuous improvement of people's living standard, the demand of smart home is constantly lifted.Existing intelligent domestic system leads to
Standing have intelligent controller, conventional electrical equipment in family, such as electric light, various household electrical appliance and Household security system
Status information all feeds back to intelligent controller, can control each electrical equipment by intelligent controller, and can be according to user
Set or automatically adjust the working condition of household network equipment, to reach the household state of the most comfortable.However, no matter using having
Line or wirelessly, existing intelligent domestic system needs other layout data transmission network.Wired mode generally adopts
The bus structures such as RS485, CAN, in addition to 2 power lines (VCC and GND), are required in addition arranging one group of connection.In order to
Ensure Electrical Safety, must be spaced a distance between power line and holding wire, the safe distance of standard be at least above
20CM, this is just extremely complex on line arrangement, once and power line and holding wire wrong, consequence is very serious.Wireless parties
Formula generally adopts the wireless transmission method such as ZigBee, WiFi, but needs to arrange wireless communication module in each electrical equipment,
Thus considerably increasing cost.Certainly the mode being also adopted by power line carrier in the intelligent domestic system of prior art can be passed through
Electric lines of force realizes data and the transmission of energy simultaneously, but power line carrier mode is also required to arrange electric power in each electrical equipment
Line carrier module, cost is very expensive, and power line carrier module has to load high frequency carrier on electrical network simultaneously, and this can be to electricity
Net pollutes, and makes electrical network unstable, causes signal transmission unstable.
Content of the invention
In view of this, it is necessory to provide a kind of system and method directly realizing data transfer using electric lines of force, with one
Plant simple, inexpensive circuit structure and directly realize data transfer using electric lines of force, enormously simplify the cloth of intelligent domestic system
Line reduces cost simultaneously.
For the defect overcoming prior art to exist, the present invention provides technical scheme below：
A kind of system directly realizing data transfer using electric lines of force, this system includes at least one intelligent controller, institute
State intelligent controller to pass through power line access electrical network power supply signal and export power supply signal, the power supply signal of described intelligent controller
Outfan passes through Alternating Current Power Supply line connect multiple data collectors, for described data collector provide power supply and realize with described
The data transfer of data collector；Wherein, described intelligent controller at least includes the first power module, the first zero passage detection mould
Block, the first control module, first switch module, current transformer and signal processing module；
Described first power module is connected with electric lines of force, for providing power supply for described intelligent controller；
Described first zero passage detection module is used for detecting the zero point of ac voltage signal and producing when this zero point is detected
First zero trigger；
One end of described first switch module is connected with electric lines of force, and the other end is connected with Alternating Current Power Supply line, described
Under the control of the first control module, described first switch module is switched on or off making the ac voltage signal in Alternating Current Power Supply line
Change thus forming the coding of digital signal ' 1 ' and ' 0 '；
Described current transformer is ring current transformer, with the change of current signal in the faradism line of force, Alternating Current Power Supply
Zero line in line or live wire are passed through in the way of non-electrical contact from this ring current transformer transformer；
Described signal processing module is connected with described current transformer, the electric current letter that described current transformer is sensed
Number carry out signal processing and be sent to described first control module, thus described first control module obtains electric current letter in electric lines of force
Number change；
Described data collector at least includes second source module, second switch module, the second control module, the second zero passage
Detection module, detection module and power termination, described second source module is connected with Alternating Current Power Supply line, for for described number
There is provided power supply according to transceiver；
Described power termination is used for consuming electric energy so that the current signal in Alternating Current Power Supply line changes；
Described second switch module is connected with described power termination, under the control of described second control module, described
Second switch module is turned on or off and makes described power termination in running order or cut-off state is so that on Alternating Current Power Supply line
Current signal change and form digital signal ' 1 ' and ' 0 ' coding；
Described second zero passage detection module is used for detecting the zero point of ac voltage signal and producing when this zero point is detected
Second zero point trigger；
Described detection module be used for detecting ac voltage signal in Alternating Current Power Supply line waveform；
When described intelligent controller is to data collector transmission data：
Described first control module is converted to digital coding letter by sending data according to data transmission format set in advance
Number, and described first switch module is controlled to the ac voltage signal ripple in Alternating Current Power Supply line according to coding rule set in advance
Shape is cut thus being sent digitally encoded signal；
When described data collector receives the data that described intelligent controller sends：
Described second control module obtains in Alternating Current Power Supply line according to described second zero passage detection module and detection module and hands over
The waveform of stream voltage signal, and data is obtained according to coding rule data transformat set in advance；
When described data collector is to described intelligent controller transmission data：
Described second control module is converted to digital coding letter by sending data according to data transmission format set in advance
Number, and control described second switch module to make described power termination in running order according to coding rule set in advance or cut
Only state is thus send digitally encoded signal；
When described intelligent controller receives the data that described data collector sends：
Described first control module obtains in Alternating Current Power Supply line according to described first zero passage detection module summation current transformer
The waveform of current signal, and data is obtained according to coding rule data transformat set in advance.
Preferably, described intelligent controller to data collector send data when, described digital signal ' 1 ' and digital signal
' 0 ' waveform is formed in the following manner：
Described first control module obtains the zero point letter of ac voltage signal waveform according to described first zero trigger
Breath, and control the positive half-wave of ac voltage signal waveform of described first switch module shield signal period or negative half-wave thus shape
Become the waveform of digital signal ' 1 ' or digital signal ' 0 '.
Preferably, described digital signal ' 1 ' is to retain the positive half-wave of ac voltage signal waveform of signal period and shield
Negative half-wave and formed, described digital signal ' 0 ' is to retain the negative half-wave of ac voltage signal waveform of signal period and just shield
Half-wave and formed.
Preferably, described digital signal ' 0 ' is to retain the positive half-wave of ac voltage signal waveform of signal period and shield
Negative half-wave and formed, described digital signal ' 1 ' is to retain the negative half-wave of ac voltage signal waveform of signal period and just shield
Half-wave and formed.
Preferably, described data collector to intelligent controller send data when, described digital signal ' 1 ' and digital signal
' 0 ' waveform is formed in the following manner：
Described second control module obtains the zero point letter of ac voltage signal waveform according to described second zero point trigger
Breath, and control the positive half-wave of ac voltage signal waveform of described second switch module shield signal period or negative half-wave, make institute
State power termination and only have positive half-wave or in running order during negative half-wave in single ac cycle, and then make in Alternating Current Power Supply line
Current signal waveform in signal period changes thus forming digital signal ' 1 ' or the waveform of digital signal ' 0 '.
Preferably, described digital signal ' 1 ' is that described power termination is in work shape in the positive half-wave of single ac cycle
State and when the negative half-wave of single ac cycle is in cut-off state the current waveform formed in Alternating Current Power Supply line；Described number
Word signal ' 0 ' is that described power termination is in cut-off state and bearing in single ac cycle in the positive half-wave of single ac cycle
Current waveform formed in Alternating Current Power Supply line when half-wave is in running order.
Preferably, described digital signal ' 0 ' is that described power termination is in work shape in the positive half-wave of single ac cycle
State and when the negative half-wave of single ac cycle is in cut-off state the current waveform formed in Alternating Current Power Supply line；Described number
Word signal ' 1 ' is that described power termination is in cut-off state and bearing in single ac cycle in the positive half-wave of single ac cycle
Current waveform formed in Alternating Current Power Supply line when half-wave is in running order.
Preferably, when described intelligent controller is to data collector transmission data, data transmission format includes frame head, purpose
Address, data message and end of identification, described frame head, destination address, data message and end of identification are all by digital signal ' 1 '
' 0 ' formation digitally encoded signal.
Preferably, when described data collector is to intelligent controller transmission data, data transmission format includes frame head, transmission
Address, data message and end of identification, described frame head, destination address, data message and end of identification are all by digital signal ' 1 '
' 0 ' formation digitally encoded signal.
The invention also discloses a kind of method directly realizing data transfer using electric lines of force, by being serially connected in electric lines of force
Intelligent controller and with described intelligent controller and simultaneous transmission energy in electric lines of force realized by the multiple data collectors that connect
Amount data；
When described intelligent controller sends data to data collector, comprise the following steps：
Preset the coding rule of digital signal ' 1 ' and ' 0 ' waveform voltage signal in Alternating Current Power Supply line；
Intelligent controller is converted to digitally encoded signal by sending data according to data transmission format set in advance；
Successively each in digitally encoded signal is carried out to ac voltage signal waveform according to the coding rule of agreement
Process, wherein, intelligent controller is provided with first switch module, by controlling first switch module in Alternating Current Power Supply line
Ac voltage signal waveform is cut according to the coding rule of agreement thus being realized sending digitally encoded signal；
When described data collector receives the data that described intelligent controller sends, comprise the following steps：
Data collector carries out detection operation to ac voltage signal waveform in Alternating Current Power Supply line；
Digital code information is obtained according to coding rule set in advance；
Digital code information is parsed thus being obtained data according to data transmission format set in advance；
When described data collector sends data to described intelligent controller, comprise the following steps：
Preset the coding rule of digital signal ' 1 ' and ' 0 ' current signal waveform in Alternating Current Power Supply line；
Data collector is converted to digitally encoded signal by sending data according to data transmission format set in advance；
Successively each in digitally encoded signal is carried out to ac current signal waveform according to the coding rule of agreement
Process, wherein, data collector is provided with power termination, power termination is in running order or cut-off state makes by controlling
Ac current signal waveform in Alternating Current Power Supply line produces the current signal waveform of the coding rule of above-mentioned agreement thus realizing sending out
Send digitally encoded signal；
When described intelligent controller receives the data that described data collector sends, comprise the following steps：
Intelligent controller carries out detection operation to ac current signal waveform in Alternating Current Power Supply line, wherein, in Based Intelligent Control
Device is provided with current transformer, obtains the waveform of current signal in Alternating Current Power Supply line by current transformer；
Digital code information is obtained according to coding rule set in advance；
Digital code information is parsed thus being obtained data according to data transmission format set in advance.
Compared with prior art, technical scheme, realizes directly utilizing electric power using simple circuit structure
Line completes bidirectional data transfers, enormously simplify the wiring of intelligent domestic system and reduces cost；Meanwhile, in data transfer
When, at least retain complete half-wave in signal period ac voltage signal as energy supply, thus ensureing electrical equipment just
Often work.
Brief description
Fig. 1 is a kind of Organization Chart directly realizing the system of data transfer using electric lines of force of the present invention.
Fig. 2 is the principle frame of intelligent controller in a kind of system directly realizing data transfer using electric lines of force of the present invention
Figure.
Fig. 3 sends, by intelligent controller in the present invention, the digital signal ' 1 ' and ' 0 ' arranged during data to data collector
A kind of waveform voltage signal.
Fig. 4 sends, by intelligent controller in the present invention, the digital signal ' 1 ' and ' 0 ' arranged during data to data collector
Another kind of waveform voltage signal.
Fig. 5 is the principle frame of data collector in a kind of system directly realizing data transfer using electric lines of force of the present invention
Figure.
Fig. 6 sends, to intelligent controller, the number arranged in data collector during data by data collector in the present invention
A kind of waveform voltage signal of word signal ' 1 ' and ' 0 '.
Fig. 7 sends, to intelligent controller, the number arranged in intelligent controller during data by data collector in the present invention
A kind of current signal waveform of word signal ' 1 ' and ' 0 '.
Fig. 8 sends, to intelligent controller, the number arranged in data collector during data by data collector in the present invention
Another kind of waveform voltage signal of word signal ' 1 ' and ' 0 '.
Fig. 9 sends, to intelligent controller, the number arranged in intelligent controller during data by data collector in the present invention
Another kind of current signal waveform of word signal ' 1 ' and ' 0 '.
Figure 10 sends, to data collector, the data transmission format arranged during data by intelligent controller in the present invention.
Figure 11 sends, to data collector, the data transmission format arranged during data by intelligent controller in the present invention.
Specific examples below will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Specific embodiment
Below with reference to accompanying drawing, the invention will be further described.
Referring to Fig. 1, it show the Organization Chart that the present invention directly realizes the system of data transfer using electric lines of force, this system bag
Include at least one intelligent controller, intelligent controller passes through power line access electrical network power supply signal and exports power supply signal, intelligence
The power supply signal outfan of controller passes through Alternating Current Power Supply line connect multiple data collectors, for data collector provide power supply with
And realize the data transfer with data collector；Intelligent controller is by being encoded to number to ac voltage signal in electric lines of force
Send data according to transceiver, and data collector is sent out to intelligent controller by encoding to ac current signal in electric lines of force
Send data, thus need not framework data transmission network again, without loading high-frequency carrier signal in electric lines of force.
Referring to Fig. 2, it show intelligent controller in a kind of system directly realizing data transfer using electric lines of force of the present invention
Theory diagram, intelligent controller at least include the first power module, the first zero passage detection module, the first control module, first
Switch module, current transformer and signal processing module；
First power module is connected with electric lines of force, for providing power supply for intelligent controller；
First zero passage detection module is used for detecting the zero point of ac voltage signal and producing first when this zero point is detected
Zero point trigger；
Current transformer is ring current transformer, with the change of current signal in the faradism line of force, in Alternating Current Power Supply line
Zero line or live wire by non-electrical contact in the way of pass through from this ring current transformer transformer；
Signal processing module is connected with current transformer, and the current signal that current transformer is sensed is carried out at signal
Manage and be sent to the first control module, thus the first control module obtains the change of current signal in electric lines of force；
One end of first switch module is connected with electric lines of force, and the other end is connected with Alternating Current Power Supply line, the first control mould
Block controls being switched on or off of first switch module.When first switch module is in the conduction state for a long time, Alternating Current Power Supply
In line, transmission mains voltage signal supplies electric flux for each data collector；When first switch module is according to setting in advance
Fixed coding rule is switched on or off, so that the ac voltage signal waveform in Alternating Current Power Supply line changes, by
This forms the coding waveforms of digital signal ' 1 ' and ' 0 '；The coding waveforms of digital signal ' 1 ' and ' 0 ' can be by one or more
The waveform voltage signal of ac cycle is formed.
In a preferred embodiment, intelligent controller to data collector send data when, digital signal ' 1 ' and
' 0 ' coding waveforms by singly give the cycle ac voltage signal formed, specially under：
First control module obtains the zero point information of ac voltage signal waveform according to first zero trigger, works as upper half
When ripple or lower half-wave arrive, control the positive half-wave of ac voltage signal waveform of first switch module shield signal period or negative
Half-wave, thus forming digital signal ' 1 ' or the waveform of digital signal ' 0 ', thus, at least retains half-wave in an ac cycle
Energy, it is ensured that the confession electric flux of data collector while data transfer.
Referring to Fig. 3, it show a kind of waveform of digital signal ' 1 ' and ' 0 ' in embodiment, where the dotted line signifies that waveform
Masked segment, digital signal ' 1 ' is to retain the positive half-wave of ac voltage signal waveform of signal period and shield negative half-wave and shape
Become, digital signal ' 0 ' is to retain the negative half-wave of ac voltage signal waveform of signal period and shield positive half-wave and formed.
Referring to Fig. 4, it show the waveform of digital signal ' 1 ' and ' 0 ' in another embodiment, where the dotted line signifies that waveform
Masked segment, digital signal ' 0 ' be retain the positive half-wave of ac voltage signal waveform of signal period and shield negative half-wave and
Formed, digital signal ' 1 ' is to retain the negative half-wave of ac voltage signal waveform of signal period and shield positive half-wave and formed.
Referring to Fig. 5, it show data collector in a kind of system directly realizing data transfer using electric lines of force of the present invention
Theory diagram, data collector at least includes second source module, second switch module, the second control module, the second zero passage
Detection module, detection module and power termination, wherein, second source module is connected with Alternating Current Power Supply line, for for data
Transceiver provides power supply；The built-in Voltage stabilizing module of second source module, because the frequency of mains voltage is 50Hz, therefore,
When intelligent controller sends data, do not affect the transmission of its energy to a certain extent, certainly compare all-wave transmission, the energy of its transmission
Amount can diminish, but as long as Alternating Current Power Supply signal reaches certain angle of flow, such as half-wave conducting, second source module can be stablized
Output direct-current working volts, thus ensure the normal work of data collector.
Second zero passage detection module is used for detecting the zero point of ac voltage signal and producing second when this zero point is detected
Zero point trigger；
Detection module be used for detecting ac voltage signal in Alternating Current Power Supply line waveform, thus the second control module can
Waveform is decoded as digital signal ' 1 ' and completes data receiver with ' 0 ' and then according to the data form of agreement；Preferably real in one kind
Apply in mode, detection module is realized by program, according to the zero signal of the second zero passage detection module, exchange in Alternating Current Power Supply line
The upper half-wave of voltage signal and lower half wavelength-division do not carry out magnitude of voltage is employed many times, if waveform is shielded, the magnitude of voltage adopting
For 0, if do not shielded, it is normal voltage value using result, thus the second control module can obtain shape information and translate
Code is digital signal ' 1 ' and ' 0 '.
In another preferred embodiment, detection module is realized by comparator, by the reference voltage setting of comparator
For no-voltage, the ac voltage signal after shielding is also no-voltage, equal with reference voltage, exports low level, otherwise exports
High level, waveform is decoded as digital signal ' 1 ' and ' 0 ' according to level edge change and zero point information by the second control module.
It is to be realized by power termination and second switch module that data collector sends data to intelligent controller, its
In, power termination is used for consuming electric energy so that the current signal in Alternating Current Power Supply line changes, and during normal work, power is born
Load is in by state, and only when data collector sends data, power termination ability is according to the coding rule made an appointment
Then in running order or by state；Second switch module is connected with power termination, in the control of the second control module
Under, second switch module is turned on or off and makes power termination in running order or cut-off state is so that on Alternating Current Power Supply line
Current signal changes and forms the coding of digital signal ' 1 ' and ' 0 ', and its concrete principle is as follows：
When system stability works, because power consumption is constant, therefore, bus current waveform is also constant, by pre-
The coding rule first setting controls power termination in running order or by state, when power termination is in running order
When, general power can be made to greatly increase, so that the amplitude of bus current waveform is increased sharply, thus data message to be transmitted is added
It is loaded in the change of the current signal waveform in Alternating Current Power Supply line；Intelligent controller is according to coding rule set in advance to exchange
In supply lines, current signal waveform change is decoded thus obtaining data collector data message to be transmitted.
Specifically, such as one intelligent controller is mounted with 10 data collectors it is assumed that each data collector is normal
The power of work is 5w, then, during normal work, bus efficiency is 50w, because bus voltage is alternating current 220V, therefore bus current
It is also AC signal, and be directly proportional with general power.The power of hypothesis power termination is 10w, when power termination is in work shape
During state, general power is 60w, and therefore, the amplitude of bus current signal will become big.Waveform is changed by current signal set in advance
As the coding waveforms of digital signal ' 1 ' and ' 0 ', therefore, it is capable of data collector to Based Intelligent Control using above-mentioned principle
Device transmission data.
In data collector, the second control module passes through to control conducting and the disconnection of second switch module, makes power is born
The ac voltage signal carrying power supply forms different waveforms in signal period, thus the number in data collector for mark
Word signal ' 1 ' and ' 0 '.Such as, the positive half-wave of the power termination Alternating Current Power Supply signal of signal period or negative half-wave can be carried out
Completely cut thus power termination is only in running order in upper half-wave or lower half-wave.That is, data collector is to intelligent control
When device processed sends data, the second control module obtains the zero point letter of ac voltage signal waveform according to the second zero point trigger
Breath, and control the positive half-wave of ac voltage signal waveform of second switch module shield signal period or negative half-wave, so that power is born
It is loaded in single ac cycle in running order when only having positive half-wave or negative half-wave, and then make signal period in Alternating Current Power Supply line
Interior current signal waveform changes thus forming digital signal ' 1 ' or the waveform of digital signal ' 0 '.
Shown in Figure 6, in data collector, produce digital signal ' 1 ' and ' 0 ' by controlling second switch module
A kind of waveform voltage signal, the wherein voltage waveform of broken line representation masked segment, the signal waveform of digital signal ' 1 ' is to retain list
Individual Cyclical power loads the positive half-wave of Alternating Current Power Supply signal and completely shields negative half-wave and formed；The signal wave of digital signal ' 0 '
Shape be retain signal period power termination Alternating Current Power Supply signal negative half-wave and completely shielding positive half-wave formed.Because power is born
Carry only half period only in single ac cycle in running order, thus single ac cycle internal bus electric current can be caused
The change of waveform, for intelligent controller, digital signal ' 1 ' is power termination at the positive half-wave of single ac cycle
The current wave formed in Alternating Current Power Supply line in working condition and when the negative half-wave of single ac cycle is in cut-off state
Shape；Digital signal ' 0 ' is in cut-off state and in single ac cycle for power termination in the positive half-wave of single ac cycle
Current waveform formed in Alternating Current Power Supply line when negative half-wave is in running order.Corresponding bus current waveform such as Fig. 7
Shown, wherein dotted line is in current waveform during steady operation for system, represents digital signal ' 1 ' with the change of this current waveform
With digital signal ' 0 ', thus, intelligent controller by detect the change of bus current enter row decoding obtain digital signal ' 1 ' and
‘0’.Although due to there is capacitive reactancess or emotional resistance in actual working environment, may there is certain phase in current waveform
Potential difference, but its variation tendency is substantially as shown in Figure 7, does not affect data decoding operate.
Shown in Figure 8, it is the voltage of the digital signal ' 1 ' and ' 0 ' in another embodiment in data collector
Signal waveform, the wherein voltage waveform of broken line representation masked segment, the signal waveform of digital signal ' 0 ' is to retain signal period work(
Rate loads the positive half-wave of Alternating Current Power Supply signal and completely shields negative half-wave and formed；The signal waveform of digital signal ' 1 ' is to retain
The negative half-wave of signal period power termination Alternating Current Power Supply signal simultaneously completely shields positive half-wave and is formed.Because power termination is only in list
In individual ac cycle, only half period is in running order, thus the change of single ac cycle internal bus current waveform can be caused
Change, for intelligent controller, digital signal ' 0 ' is in work shape for power termination in the positive half-wave of single ac cycle
State and when the negative half-wave of single ac cycle is in cut-off state the current waveform formed in Alternating Current Power Supply line；Numeral letter
Number ' 1 ' is power termination is in cut-off state and the negative half-wave in single ac cycle is in the positive half-wave of single ac cycle
Current waveform formed in Alternating Current Power Supply line during working condition.Corresponding bus current waveform is as shown in figure 9, wherein empty
Line is in current waveform during steady operation for system, represents digital signal ' 0 ' and digital signal with the change of this current waveform
‘1’.
Intelligent controller, in receiving data, joins the change of the current waveform in sensing Alternating Current Power Supply line by current transformer
Change and produce faradic current, thus the first control module is obtained in that current value, in combination with zero point information, according to presetting
Waveform coding rule decode out data message.
Communicate to realize the valid data between multiple data collectors and intelligent controller, data collector is to intelligence
Controller sending signal is also required in accordance with certain Data Transport Protocol, when intelligent controller is to data collector transmission data,
Data transmission format includes frame head, destination address, data message and end of identification, referring specifically to shown in Figure 10.Wherein, frame head,
Destination address, data message and end of identification are all to form digitally encoded signal by digital signal ' 1 ' and ' 0 '.Frame head and end
Identify the beginning for mark data transmission and end, destination address is used for the data collector that mark receives this data message,
Each data collector has uniquely identified address code, because intelligent controller is to pass through to data collector transmission data
On Alternating Current Power Supply line, the change of voltage waveform is realized, and each data collector can receive the change of this voltage waveform, therefore,
Data transmission format has to set destination address, to determine which data collector data message is destined to, other
Data collector receives abandons this data message automatically after being not belonging to the data message of oneself, certain destination address can set
It is set to broadcast address, thus all of data collector can receive this data message.Data message is number to be sent
According to content or control command, thus data collector is according to the corresponding operation of host-host protocol execution of agreement.
In the same manner, data collector to intelligent controller send data when, data transmission format include frame head, send address,
Data message and end of identification, referring specifically to shown in Figure 11.Wherein, frame head, destination address, data message and end of identification are
Digitally encoded signal is formed by digital signal ' 1 ' and ' 0 '.During due to data collector to intelligent controller transmission data, it is logical
The change crossing current waveform on Alternating Current Power Supply line is realized, and any data collector sends data and all can cause electricity on Alternating Current Power Supply line
The change of stream waveform is realized, and therefore, has to set transmitting address, to determine that intelligent controller is connect in data transmission format
Which data collector the data message receiving is from.
In order that electrical network more balances, in a preferred embodiment, in frame head and end of identification, digital signal ' 1 '
Number balance with digital signal ' 0 '.Such as header signal is ' 11110000 ', and end signal is ' 11000011 ', numeral
The number of signal ' 1 ' and digital signal ' 0 ' is of substantially equal, is prevented effectively from and produces harmonic wave interference in data transmission procedure.
Data transmit-receive process between intelligent controller data transceiver is as follows：
When intelligent controller is to data collector transmission data：
First control module is converted to digitally encoded signal by sending data according to data transmission format set in advance, and
Control first switch module that the ac voltage signal waveform in Alternating Current Power Supply line is cut according to coding rule set in advance
Cut thus sending digitally encoded signal；
When data collector receives the data that intelligent controller sends：
Second control module obtains alternating voltage letter in Alternating Current Power Supply line according to the second zero passage detection module and detection module
Number waveform, and according to coding rule data transformat set in advance obtain data；
When data collector is to intelligent controller transmission data：
Second control module is converted to digitally encoded signal by sending data according to data transmission format set in advance, and
Control second switch module to make power termination in running order according to coding rule set in advance or cut-off state is thus send out
Send digitally encoded signal；
During the data that intelligent controller receiving data transceiver sends：
First control module obtains current signal in Alternating Current Power Supply line according to the first zero passage detection module summation current transformer
Waveform, and according to coding rule data transformat set in advance obtain data.
In a preferred embodiment, first switch module and second switch module are metal-oxide-semiconductor or controllable silicon.
In a preferred embodiment, the first zero passage detection module and the second zero passage detection module are by photoelectrical coupler
Realize.
In a preferred embodiment, the first control module and the second control module are single-chip microcomputer.
The invention allows for a kind of method directly realizing data transfer using electric lines of force, by being serially connected in electric lines of force
Intelligent controller and with intelligent controller and the multiple data collectors that connect realize in electric lines of force simultaneous transmission energy and
Data；
When intelligent controller sends data to data collector, comprise the following steps：
Preset the coding rule of digital signal ' 1 ' and ' 0 ' waveform voltage signal in Alternating Current Power Supply line；
Intelligent controller is converted to digitally encoded signal by sending data according to data transmission format set in advance；
Successively each in digitally encoded signal is carried out to ac voltage signal waveform according to the coding rule of agreement
Process, wherein, intelligent controller is provided with first switch module, by controlling first switch module in Alternating Current Power Supply line
Ac voltage signal waveform is cut according to the coding rule of agreement thus being realized sending digitally encoded signal；
When data collector receives the data that intelligent controller sends, comprise the following steps：
Data collector carries out detection operation to ac voltage signal waveform in Alternating Current Power Supply line；
Digital code information is obtained according to coding rule set in advance；
Digital code information is parsed thus being obtained data according to data transmission format set in advance；
When data collector sends data to intelligent controller, comprise the following steps：
Preset the coding rule of digital signal ' 1 ' and ' 0 ' current signal waveform in Alternating Current Power Supply line；
Data collector is converted to digitally encoded signal by sending data according to data transmission format set in advance；
Successively each in digitally encoded signal is carried out to ac current signal waveform according to the coding rule of agreement
Process, wherein, data collector is provided with power termination, power termination is in running order or cut-off state makes by controlling
Ac current signal waveform in Alternating Current Power Supply line produces the current signal waveform of the coding rule of above-mentioned agreement thus realizing sending out
Send digitally encoded signal；
When the data that intelligent controller receiving data transceiver sends, comprise the following steps：
Intelligent controller carries out detection operation to ac current signal waveform in Alternating Current Power Supply line, wherein, in Based Intelligent Control
Device is provided with current transformer, obtains the waveform of current signal in Alternating Current Power Supply line by current transformer；
Digital code information is obtained according to coding rule set in advance；
Digital code information is parsed thus being obtained data according to data transmission format set in advance.
In actual applications, said system and method can be applied in Intelligent housing, namely in smart home
In controller, intelligent controller is set, controlled electrical equipment arranges data collector, the intelligent domestic appliance controller passes through electric power
Line simultaneously connects multiple controlled electrical equipments, and realizes simultaneous transmission energy in electric lines of force by intelligent controller data transceiver
Data.
The explanation of above example is only intended to help and understands the method for the present invention and its core concept.It should be pointed out that it is right
For those skilled in the art, under the premise without departing from the principles of the invention, the present invention can also be carried out
Some improvement and modification, these improve and modify and also fall in the protection domain of the claims in the present invention.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple modifications to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and be to fit to and principles disclosed herein and features of novelty phase one
The scope the widest causing.
Claims (10)
1. a kind of directly realize the system of data transfer it is characterised in that this system includes at least one intelligence using electric lines of force
Controller, described intelligent controller passes through power line access electrical network power supply signal and exports power supply signal, described intelligent controller
Power supply signal outfan pass through Alternating Current Power Supply line connect multiple data collectors, for described data collector provide power supply and
Realize the data transfer with described data collector；Wherein, described intelligent controller at least includes the first power module, the first mistake
Zero detection module, the first control module, first switch module, current transformer and signal processing module；
Described first power module is connected with electric lines of force, for providing power supply for described intelligent controller；
Described first zero passage detection module is used for detecting the zero point of ac voltage signal and producing first when this zero point is detected
Zero point trigger；
One end of described first switch module is connected with electric lines of force, and the other end is connected with Alternating Current Power Supply line, described first
Under the control of control module, described first switch module is switched on or off making the ac voltage signal in Alternating Current Power Supply line occur
Change is thus form the coding of digital signal ' 1 ' and ' 0 '；
Described current transformer is ring current transformer, with the change of current signal in the faradism line of force, in Alternating Current Power Supply line
Zero line or live wire by non-electrical contact in the way of pass through from this ring current transformer transformer；
Described signal processing module is connected with described current transformer, and the current signal that described current transformer is sensed enters
Row signal processing is simultaneously sent to described first control module, thus described first control module obtains current signal in electric lines of force
Change；
Described data collector at least includes second source module, second switch module, the second control module, the second zero passage detection
Module, detection module and power termination, described second source module is connected with Alternating Current Power Supply line, for receiving for described data
Sending out device provides power supply；
Described power termination is used for consuming electric energy so that the current signal in Alternating Current Power Supply line changes；
Described second switch module is connected with described power termination, under the control of described second control module, described second
Switch module is turned on or off and makes described power termination in running order or cut-off state is so that electricity on Alternating Current Power Supply line
Stream signal changes and forms the coding of digital signal ' 1 ' and ' 0 '；
Described second zero passage detection module is used for detecting the zero point of ac voltage signal and producing second when this zero point is detected
Zero point trigger；
Described detection module be used for detecting ac voltage signal in Alternating Current Power Supply line waveform；
When described intelligent controller is to data collector transmission data：
Described first control module is converted to digitally encoded signal by sending data according to data transmission format set in advance, and
Control described first switch module that the ac voltage signal waveform in Alternating Current Power Supply line is entered according to coding rule set in advance
Row cutting is thus send digitally encoded signal；
When described data collector receives the data that described intelligent controller sends：
Described second control module obtains alternating current in Alternating Current Power Supply line according to described second zero passage detection module and detection module
The waveform of pressure signal, and data is obtained according to coding rule data transformat set in advance；
When described data collector is to described intelligent controller transmission data：
Described second control module is converted to digitally encoded signal by sending data according to data transmission format set in advance, and
Described second switch module is controlled to make described power termination in running order according to coding rule set in advance or cut-off shape
State is thus send digitally encoded signal；
When described intelligent controller receives the data that described data collector sends：
Described first control module obtains electric current in Alternating Current Power Supply line according to described first zero passage detection module summation current transformer
The waveform of signal, and data is obtained according to coding rule data transformat set in advance.
2. according to claim 1 directly realize the system of data transfer it is characterised in that described intelligence using electric lines of force
When controller is to data collector transmission data, the waveform shape in the following manner of described digital signal ' 1 ' and digital signal ' 0 '
Become：
Described first control module obtains the zero point information of ac voltage signal waveform according to described first zero trigger, and
Control the positive half-wave of ac voltage signal waveform of described first switch module shield signal period or negative half-wave thus forming number
Word signal ' 1 ' or the waveform of digital signal ' 0 '.
3. according to claim 2 directly realize the system of data transfer it is characterised in that described numeral using electric lines of force
Signal ' 1 ' is to retain the positive half-wave of ac voltage signal waveform of signal period and shield negative half-wave and formed, described numeral letter
Number ' 0 ' is to retain the negative half-wave of ac voltage signal waveform of signal period and shield positive half-wave and formed.
4. according to claim 2 directly realize the system of data transfer it is characterised in that described numeral using electric lines of force
Signal ' 0 ' is to retain the positive half-wave of ac voltage signal waveform of signal period and shield negative half-wave and formed, described numeral letter
Number ' 1 ' is to retain the negative half-wave of ac voltage signal waveform of signal period and shield positive half-wave and formed.
5. according to claim 1 directly realize the system of data transfer it is characterised in that described data using electric lines of force
When transceiver is to intelligent controller transmission data, the waveform shape in the following manner of described digital signal ' 1 ' and digital signal ' 0 '
Become：
Described second control module obtains the zero point information of ac voltage signal waveform according to described second zero point trigger, and
Control the positive half-wave of ac voltage signal waveform of described second switch module shield signal period or negative half-wave, make described power
It is supported in single ac cycle in running order when only having positive half-wave or negative half-wave, and then make single week in Alternating Current Power Supply line
Current signal waveform in phase changes thus forming digital signal ' 1 ' or the waveform of digital signal ' 0 '.
6. according to claim 5 directly realize the system of data transfer it is characterised in that described numeral using electric lines of force
Signal ' 1 ' be described power termination single ac cycle positive half-wave in running order and in single ac cycle negative half
Ripple is in current waveform during cut-off state formed in Alternating Current Power Supply line；Described digital signal ' 0 ' is described power termination
It is in cut-off state in the positive half-wave of single ac cycle and handing over when the negative half-wave of single ac cycle is in running order
Current waveform formed in stream supply lines.
7. according to claim 5 directly realize the system of data transfer it is characterised in that described numeral using electric lines of force
Signal ' 0 ' be described power termination single ac cycle positive half-wave in running order and in single ac cycle negative half
Ripple is in current waveform during cut-off state formed in Alternating Current Power Supply line；Described digital signal ' 1 ' is described power termination
It is in cut-off state in the positive half-wave of single ac cycle and handing over when the negative half-wave of single ac cycle is in running order
Current waveform formed in stream supply lines.
8. according to claim 1 directly realize the system of data transfer it is characterised in that described intelligence using electric lines of force
When controller is to data collector transmission data, data transmission format includes frame head, destination address, data message and terminates mark
Know, described frame head, destination address, data message and end of identification are all to form digital coding letter by digital signal ' 1 ' and ' 0 '
Number.
9. according to claim 1 directly realize the system of data transfer it is characterised in that described data using electric lines of force
When transceiver is to intelligent controller transmission data, data transmission format includes frame head, sends address, data message and terminate mark
Know, described frame head, destination address, data message and end of identification are all to form digital coding letter by digital signal ' 1 ' and ' 0 '
Number.
10. a kind of directly realize the method for data transfer it is characterised in that intelligence by being serially connected in electric lines of force using electric lines of force
Can controller and with described intelligent controller and the multiple data collectors that connect realize in electric lines of force simultaneous transmission energy and
Data；
When described intelligent controller sends data to data collector, comprise the following steps：
Preset the coding rule of digital signal ' 1 ' and ' 0 ' waveform voltage signal in Alternating Current Power Supply line；
Intelligent controller is converted to digitally encoded signal by sending data according to data transmission format set in advance；
Successively each in digitally encoded signal is processed to ac voltage signal waveform according to the coding rule of agreement,
Wherein, it is provided with first switch module in intelligent controller, by controlling first switch module to the exchange in Alternating Current Power Supply line
Waveform voltage signal is cut according to the coding rule of agreement thus being realized sending digitally encoded signal；
When described data collector receives the data that described intelligent controller sends, comprise the following steps：
Data collector carries out detection operation to ac voltage signal waveform in Alternating Current Power Supply line；
Digital code information is obtained according to coding rule set in advance；
Digital code information is parsed thus being obtained data according to data transmission format set in advance；
When described data collector sends data to described intelligent controller, comprise the following steps：
Preset the coding rule of digital signal ' 1 ' and ' 0 ' current signal waveform in Alternating Current Power Supply line；
Data collector is converted to digitally encoded signal by sending data according to data transmission format set in advance；
Successively each in digitally encoded signal is processed to ac current signal waveform according to the coding rule of agreement,
Wherein, it is provided with power termination in data collector, power termination is in running order or cut-off state makes exchange by controlling
Ac current signal waveform in supply lines produces the current signal waveform of the coding rule of above-mentioned agreement thus realizing sending number
Word encoded signal；
When described intelligent controller receives the data that described data collector sends, comprise the following steps：
Intelligent controller carries out detection operation to ac current signal waveform in Alternating Current Power Supply line, wherein, sets in intelligent controller
It is equipped with current transformer, obtain the waveform of current signal in Alternating Current Power Supply line by current transformer；
Digital code information is obtained according to coding rule set in advance；
Digital code information is parsed thus being obtained data according to data transmission format set in advance.
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