CN106020023A - Online phase-modulation digital communication control system of local power utilization network - Google Patents
Online phase-modulation digital communication control system of local power utilization network Download PDFInfo
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention discloses an online phase-modulation digital communication control system of a local power utilization network. The system comprises a power supply line, a main network controller and auxiliary network controllers, the main controller is connected with the auxiliary network controllers in parallel in the power supply line, the main controller communicates with the auxiliary network controllers via the power supply line, and after receiving communication signals, the auxiliary network controllers control auxiliary network power utilization devices connected to the auxiliary network controllers according to preset internal programs. The system has the advantages of simple control mode, zero energy consumption, low cost, convenient installation, strong functions, high practicality and wide application range.
Description
Technical field
The present invention relates to a kind of electric power network control system, be specifically related to a kind of local power utilization network online phase-modulation digital communication control system.
Background technology
The management of local power utilization network is the important management and control ingredient in power utilization network management.Along with Smart Home, industrial automatic control, the development of Internet of Things remote information management, the market demand of the management of local power utilization network is the most urgent.Under current techniques environment, the many employings of local electrical equipment network management multiple electrical appliances in a supply line under operation, utilize GPRS less radio-frequency and two kinds of communication modes of corded power carrier wave to realize the LAN monitoring management function of electrical appliance.But, which manufacturing cost is high, it is big to put into, use and maintenance cost is of a relatively high.There is also the problems such as wiring complexity, function singleness, cost height, poor practicability simultaneously.
As Patent publication No CN201520416793 discloses a kind of local electrical equipment offline network management control system.The utility model discloses a kind of local electrical equipment offline network management control system, this system includes a supply line, the power supply input top of described supply line is in series with power control switch K1, described switch K1 is connected in parallel to offline network power source management controller and the communication interface switch K2 being serially connected, being also associated with some electrical appliances parallel with one another in described supply line, described each electrical appliance is connected to from controller；Described offline network power source management controller includes master controller, the input of described master controller connects power input interface, keyboard, internet interface and USB interface, and the outfan of described master controller connects power output interface, data communication interface, display and warning lamp.This system can complete artificial and automatic control switch power transmission function；And carry out data communication from one-chip computer under off-line state and realize monitoring management function；USB interface and internet interface can be passed through to realize and computer, mobile phone and the communication function of the Internet.This utility model communication function is single, can not meet the demand for control that electrical appliance increases day by day.
Such as Patent publication No CN102118183A power carrier communication method and device, comprising the steps: information gathering step, physical layer receives pilot signal to obtain channel condition information；Synchronization Status Message step, described physical layer and data transmission control layer synchronize described channel condition information；Information handling step, according to described channel condition information, the packet being needed and can communicating；Communication steps, holding time section transmits described needs the packet that can communicate in turn.Principle of Communication is complicated, use inconvenience, poor practicability.
Now need a kind of low cost badly, control method is simple, be easy to basic unit technician grasps the local power utilization network communication control system of use.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, it is provided that one can communication in time, easy to use, practical, low cost, meet stub network use environment a kind of local power utilization network online phase-modulation digital communication control system.
A kind of local power utilization network online phase-modulation digital communication control system includes supply line, master network controller and from network controller.Described master network controller is connected in parallel on supply line from network controller with some, master network controller by supply line and carries out communication from network controller, after network controller receives communication signal, it is controlled from network powered device connect from network controller according to from the internal program set in advance of network controller.
Described supply line is AC AC network, including supply line's L(live wire), N(zero line), the power input of supply line is in series with KM power control switch, from L line end be in series with master network controller K1 Communication Control switch.KM power control switch directly controls path or the open circuit of supply line, and then controls whole local power utilization network online phase-modulation digital communication control system.
Connect between power supply input top L, N of described ac power supply line and have anti-lightning strike antisurge and filter circuit.
Described master network controller includes K1 Communication Control switch, SCR1 modulation controllable silicon, SCR2 modulation controllable silicon, synchronized signal extracting circuit, Communication Control on-off circuit, interface, MODULATOR manipulator and MCU microcontroller.
Described master network controller is connected with supply line.K1 Communication Control switch is connected from the L line end of supply line and is entered supply line.K1 Communication Control switch is controlled by weak electrical loop controller, and then controls the break-make in forceful electric power loop.
Described SCR1 modulation controllable silicon, SCR2 modulation controllable silicon are the most in parallel, and simultaneously with K1 Communication Control switch in parallel, access the L line end of supply line.SCR1 modulation controllable silicon, SCR2 modulation controllable silicon mutually opposing (opposite polarity).
The digital information of MCU micro-control machine output and the synchronized signal in synchronized signal extracting circuit export digit pulse through G1, G2 pulsed triggering circuit through MODULATOR manipulator respectively, control SCR1 modulation controllable silicon respectively, SCR2 modulates controllable silicon, and then realizes the modulation of the AC network information.
Described synchronized signal extracting circuit includes R1 current-limiting resistance, BD1 rectifier bridge, V1 photoelectrical coupler and R2 emitter-base bandgap grading sample resistance.
One pin of described BD1 rectifier bridge is connected with R1 current-limiting resistance, and accesses the N(zero line of supply line).BD1 rectifier bridge is connected with V1 photoelectrical coupler pin, and the pin of V1 photoelectrical coupler is connected with R2 emitter-base bandgap grading sample resistance.
When master network controller is to when sending control data from network controller, first master network controller exports control information and drives the optically isolated controller of VK1 to make K1 Communication Control switch off, synchronized signal in digital information and the synchronized signal extracting circuit (R1 current-limiting resistance, rectifier bridge BD1 photoelectrical coupler V1 and R2 emitter-base bandgap grading sample resistance) of MCU micro-control machine output simultaneously respectively through the output digit pulse of MODULATOR manipulator through G1, G2 pulsed triggering circuit, control SCR1 modulation controllable silicon respectively, SCR2 modulates controllable silicon.
Described Communication Control on-off circuit is optically isolated controller.
Described interface is connected with MCU microcontroller, and external equipment and MCU microcontroller are carried out communication.Interface is input/output interface, USB interface, interface of internet of things, keyboard interface, display interface device.Input/output interface I/O mouth, external all types of industries controls equipment；The conveniently accessible all kinds of Family Day typical number decoding apparatus of USB interface；Interface of internet of things is easy to network system with Internet of things system, carries out more complete communication and control；Keyboard interface is input through keyboard interface；Display connects external display.
Described include information retrieval circuit, output control circuit, MCU pico computer, MODEM modem and I/O mouth die block from network controller.
Described information retrieval circuit includes R3 current-limiting resistance, BD2 rectifier bridge, V2 photoelectrical coupler and R4 emitter-base bandgap grading sample resistance.
The pin of described BD2 rectifier bridge is connected with R3 current-limiting resistance, and accesses the N(zero line of supply line).BD2 rectifier bridge is connected with V2 photoelectrical coupler, and the pin of V2 photoelectrical coupler is connected with R4 emitter-base bandgap grading sample resistance.
Described MODEM modem passes through the voltage waveform change in information retrieval circuit reading circuit between L, N, and extracts modulation intelligence.Export MCU pico computer through MODEM modem, by MCU pico computer, the digital information received carried out respective handling and carry out exporting control to from network controller.
Described I/O mouth die block is MCU pico computer connectivity port, accesses simulation and on-off control, thus the electrical equipment in network is carried out Based Intelligent Control.
The control method of the present invention is:
(1) change (phase-modulation) at half period phase angle a certain in AC network is made waveform occur small distortion to be " 0 " by definition, keep original electrical network a certain half period waveform is then numeral " 1 ", half period is a data bit, mains frequency is the numerical value of baud rate, and the carrier using ac power supply line to be communication network digital information flow；
(2) in supply line, power supply KM power control switch Guan Bi, K1 Communication Control switch Guan Bi, given from network controller power transmission by supply line, properly functioning from network controller；
(3) master network controller sends data to from network controller, master network controller controls switch K1 by Communication Control on-off circuit and disconnects, the controllable silicon of SCR1 modulation simultaneously, SCR2 modulation controllable silicon work, digit pulse information controls SCR1 modulation controllable silicon through G1, G2 pulsed triggering circuit respectively, SCR2 modulation controllable silicon carries out phase-modulation to line voltage distribution.Character is 0, then SCR1 modulation controllable silicon, SCR2 modulation controllable silicon are changed (phase-modulation) to half periodic phase angle, make waveform that small distortion to occur.Character is 1, and waveform is constant.The alternating current voltage of the corresponding waveform of ac power supply line L, N output.
(4) receiving the modulation intelligence of supply line L, N from network controller, through MODEM modem, modulating wave being reduced to digital information (is digital " 0 " by modulated deformation half-wave, the half-wave not having deformation is numeral " 1 ") enter MCU pico computer, after coding is reduced by MCU pico computer, according to the trigger condition set in program, I/O mouth die block is exported, and then realize the electrical equipment in network is carried out Based Intelligent Control.
(5) reach communication information represent trigger condition from network controller, the electrical equipment in this network is controlled, is not the most made control action.
(6) communication completes, and master network controller controls K1 Communication Control switch Guan Bi by Communication Control on-off circuit.
Connecting multiple when network controller, master network controller is unified sends signal.Inside the MCU pico computer of network controller, trigger condition is set beforehand through program.Receive signal from the same time unification of network controller, reach the electrical equipment in this network being controlled from network controller of signal correspondence trigger condition, the most do not make control action.Realize a master network controller to multiple from network controller and from the communication of network powered device and control.
When communication starts, master network controller sends one section of initial signal before sending text signal, after network controller receives initial signal, if address is identical, prepares to accept to identify text signal.
The beneficial effects of the present invention is:
The present invention has the effect that control model is succinct, without power consumption, low cost, easy for installation, functional strong, practical, applied widely.
1, control model is succinct: it is simple and reliable that the present invention has control method, relative GPRS wireless telecommunications and power carrier communication pattern, saves software and hardware and the maintenance cost of sending link.
2, control without power consumption: the present invention " master network controller " in supply line controls not consume overall process any auxiliary electric energy, relative GPRS wireless telecommunications and power carrier communication mode network control transmitting-receiving overall process to the phase-modulation digital communication of " from machine network electrical appliance " to be needed to consume certain electric energy.
3, low cost: it is succinct that the present invention has control method, the data communication of " from machine network electrical appliance " can directly be used Phototube Coupling transmission simple and reliable by " master network controller ", GPRS wireless telecommunications and power carrier communication pattern relatively, saves transmission and the cost of accepting device.
4, easy for installation: the present invention need not original circuit is transformed convenient popularization, for GPRS wireless telecommunications and power carrier communication pattern, needs at each " from machine network electrical appliance " separately installed transmitter-receiver during installation.
5, functional by force: the present invention is applicable to online " master network controller " to a kind of local electrical equipment offline network management control system disclosed in the one-way data Communication Control function of " from machine network electrical appliance " and China Patent Publication No. CN201520416793, can realize " from machine network electrical appliance " data message can be to the information feedback function of " master network controller ", both are combined with each other and can be implemented in line or off-line bidirectional communication function, are that one has that low cost, transmission means be succinct, safe and reliable, communication overall process is without electric energy loss.
6, practical, applied widely: to can be applicable to the functions such as LED intelligent illumination, Smart Home, industrial automatic control, Internet of Things remote information management.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the local area control power utilization network system diagram of the present invention；
Fig. 2 is the master network controller schematic diagram of the present invention；
Fig. 3 be the present invention from network controller schematic diagram；
Fig. 4 is the communication waveform diagram of the present invention；
Fig. 5 be the present invention from network controller workflow schematic diagram；
Fig. 6 is the master network controller connection diagram of the present invention；
Marginal data:
1, anti-lightning strike antisurge and filter circuit；2, Communication Control on-off circuit；3, V1 photoelectrical coupler；4, BD1 rectifier bridge；5, BD2 rectifier bridge；6, V2 photoelectrical coupler.
Detailed description of the invention
Below in conjunction with the accompanying drawings the preferred embodiments of the present invention are described in detail, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, thus protection scope of the present invention are made apparent clear and definite defining.
Seeing Fig. 1, a kind of local power utilization network online phase-modulation digital communication control system includes supply line, master network controller and from network controller.Master network controller is connected in parallel on supply line from network controller with some, master network controller by supply line and carries out communication from network controller, after network controller receives communication signal, it is controlled from network powered device connect from network controller according to from the internal program set in advance of network controller.
Supply line is AC AC network, including supply line's L(live wire), N(zero line), the power input of supply line is in series with KM power control switch, from L line end be in series with master network controller K1 Communication Control switch.KM power control switch directly controls path or the open circuit of supply line, and then controls whole local power utilization network online phase-modulation digital communication control system.
Connect between power supply input top L, N of ac power supply line and have anti-lightning strike antisurge and filter circuit 1.
High energy lightning surge invades people's equipment by open air transmission circuit, the connecting line of equipment room and electric lines of force.Make to be serially connected in the middle of circuit or the electronic equipment of terminal is damaged.Thunderbolt the earth or earth conductor, cause local current potential instantaneously to rise, involve neighbouring electronic equipment, equipment is produced impact, damages its insulation against ground.The rise time of general surge pulse is longer, and pulsewidth is wider, many by inside conduction pattern access arrangement.Longitudinally the impact of balance of plant circuit elements parts is had by (common mode) impact: damage bridging component online and between ground or its dielectric；Puncture and play the transformator turn-to-turn of impedance matching effect, line insulation against ground etc. at circuit and equipment room.Laterally (differential mode) impact can be transmitted the most equally in circuit.Damage the electric capacity of internal circuit, inductance and the semiconductor device of impact resistance ability.Some non-self-healing dielectric, if flowing only through very small area analysis after puncturing.Though the operation of equipment will not be immediately terminated, but passage in time.Component insulation of making moist can little by little decline, and circuit characteristic degenerates, and finally will make Circuit Interrupt.Some parts, as transistor colelctor electrode and emitter stage or emitter stage is roused and base stage, if there is reverse breakdown, anti-lightning strike antisurge and filter circuit 1 circuit are effectively protected the power supply safety of ac power circuit, and are filtered.
Seeing Fig. 2 and Fig. 6, master network controller includes K1 Communication Control switch, SCR1 modulation controllable silicon, SCR2 modulation controllable silicon, synchronized signal extracting circuit, Communication Control on-off circuit 2, interface, MODULATOR manipulator and MCU microcontroller.Master network controller is connected with supply line.K1 Communication Control switch is connected from the L line end of supply line and is entered supply line.K1 Communication Control switch is controlled by weak electrical loop controller, and then controls the break-make in forceful electric power loop.SCR1 modulation controllable silicon, SCR2 modulation controllable silicon are the most in parallel, and simultaneously with K1 Communication Control switch in parallel, access the L line end of supply line.SCR1 modulation controllable silicon, SCR2 modulation controllable silicon mutually opposing (opposite polarity).
Controllable silicon can carry out the phase-modulation of waveform in AC load electricity circuit, generally uses reduction regulation to use.Carry out pressure regulation with controllable silicon and have multiple conventional mode.As: by two forward and reverse parallel connections of unidirectional thyristor, control to connect between pole an adjustable resistance by two, adjustably adjusts the resistance output voltage of resistance to change therewith；As: use bidirectional triode thyristor, apply phase-shift pulse signal at trigger electrode, control thyristor operating angle, it is achieved AC voltage adjusting；As: by a pulsed triggering circuit Tong Bu with alternating current power supply, make the conducting foot sending pulse from 0 degree to 180 degree of change, the i.e. voltage of scalable exchange output；As: use full-wave rectifying circuit as synchro source as the power supply of single-crystal transistor.Unijunction transistor and resistance and electric capacity one pulse-generator circuit of composition, after alternating current power supply zero passage, this circuit is started working, and power supply is charged to electric capacity by resistance, makes unijunction transistor conducting send the modes such as pulse-triggered major loop output voltage.
The present embodiment uses the digital information of MCU micro-control machine output to export digit pulse through G1, G2 pulsed triggering circuit through MODULATOR manipulator respectively with the synchronized signal in synchronized signal extracting circuit, control SCR1 modulation controllable silicon respectively, SCR2 modulates controllable silicon, and then realizes the waveform modulated of AC network.
Synchronized signal extracting circuit includes R1 current-limiting resistance, BD1 rectifier bridge 4, V1 photoelectrical coupler 3 and R2 emitter-base bandgap grading sample resistance.
Rectifier tube is enclosed in a shell by rectifier bridge exactly.Alternating current is converted to unidirectional current by the effect of rectifier bridge.Rectifier bridge is that the one-way conduction principle by diode completes rectification work, so by during its incoming transport circuit, it can make the electric current in circuit only by one-way flow.Rectifier bridge is small scale integration, and therefore power is low, and rectifier bridge applies in general to the mini electrical equipment the highest for power requirement.
One pin of BD1 rectifier bridge 4 is connected with R1 current-limiting resistance, and accesses the N(zero line of supply line).BD1 rectifier bridge 4 and V1 photoelectrical coupler 3, the pin of V1 photoelectrical coupler 3 is connected with R2 emitter-base bandgap grading sample resistance.
When master network controller is to when sending control data from network controller, first master network controller exports control information and drives the optically isolated controller of VK1 to make K1 Communication Control switch off, synchronized signal in digital information and the synchronized signal extracting circuit (R1 current-limiting resistance, rectifier bridge BD1 photoelectrical coupler V1 and R2 emitter-base bandgap grading sample resistance) of MCU micro-control machine output simultaneously respectively through the output digit pulse of MODULATOR manipulator through G1, G2 pulsed triggering circuit, control SCR1 modulation controllable silicon respectively, SCR2 modulates controllable silicon.
SCR2 modulating controllable silicon and changes diode into, the on-position of diode is identical in SCR2 modulation controllable silicon, can realize identical function.
Communication Control on-off circuit 2 is optically isolated controller.When master network controller is to when sending control data from network controller, and first master network controller exports control information and drive the optically isolated controller of VK1 to make K1 Communication Control switch off.
Interface is connected with MCU microcontroller, and external equipment and MCU microcontroller are carried out communication.Interface is input/output interface, USB interface, interface of internet of things, keyboard interface, display interface device.Input/output interface I/O mouth, external all types of industries controls equipment；The conveniently accessible all kinds of Family Day typical number decoding apparatus of USB interface；Interface of internet of things is easy to network system with Internet of things system, carries out more complete communication and control；Keyboard interface is input through keyboard interface；Display connects external display.
See Fig. 3, include information retrieval circuit, output control circuit, MCU pico computer, MODEM modem and I/O mouth die block from network controller.
Information retrieval circuit includes R3 current-limiting resistance, BD2 rectifier bridge 5, V2 photoelectrical coupler 6 and R4 emitter-base bandgap grading sample resistance.
The pin of BD2 rectifier bridge 5 is connected with R3 current-limiting resistance, and accesses the N(zero line of supply line).BD2 rectifier bridge 5 is connected with V2 photoelectrical coupler 6, and the pin of V2 photoelectrical coupler 6 is connected with R4 emitter-base bandgap grading sample resistance.
MODEM modem passes through the voltage waveform change in information retrieval circuit reading circuit between L, N, and extracts modulation intelligence.Export MCU pico computer through MODEM modem, by MCU pico computer, the digital information received carried out respective handling and carry out exporting control to from network controller.
I/O mouth die block is MCU pico computer connectivity port, accesses simulation and switch etc. and controls, thus the electrical equipment in network is carried out Based Intelligent Control.
The control method of the present invention is:
(1) change (phase-modulation) at half period phase angle a certain in AC network is made waveform occur small distortion to be " 0 " by definition, keep original electrical network a certain half period waveform is then numeral " 1 ", half period is a data bit, mains frequency is the numerical value of baud rate, and the carrier using ac power supply line to be communication network digital information flow；
(2) in supply line, power supply KM power control switch Guan Bi, K1 Communication Control switch Guan Bi, given from network controller power transmission by supply line, properly functioning from network controller；
(3) master network controller sends data to from network controller, master network controller controls switch K1 by Communication Control on-off circuit 2 and disconnects, the controllable silicon of SCR1 modulation simultaneously, SCR2 modulation controllable silicon work, digit pulse information controls SCR1 modulation controllable silicon through G1, G2 pulsed triggering circuit respectively, SCR2 modulation controllable silicon carries out phase-modulation to line voltage distribution.Character is 0, then SCR1 modulation controllable silicon, SCR2 modulation controllable silicon are changed (phase-modulation) to half periodic phase angle, make waveform that small distortion to occur.Character is 1, and waveform is constant.The alternating current voltage of the corresponding waveform of ac power supply line L, N output.
(4) receiving the modulation intelligence of supply line L, N from network controller, through MODEM modem, modulating wave being reduced to digital information (is digital " 0 " by modulated deformation half-wave, the half-wave not having deformation is numeral " 1 ") enter MCU pico computer, after coding is reduced by MCU pico computer, according to the trigger condition set in program, I/O mouth die block is exported, and then realize the electrical equipment in network is carried out Based Intelligent Control.
(5) reach communication information represent trigger condition from network controller, the electrical equipment in this network is controlled, is not the most made control action.
(6) communication completes, and master network controller controls K1 Communication Control switch Guan Bi by Communication Control on-off circuit 2.
See Fig. 4, set out from network controller to No. one by master network controller as a example by sending " 101011001000 " character string:
No. one controls for LED intelligent illumination network from network controller.In supply line, power supply KM power control switch Guan Bi, K1 Communication Control switch Guan Bi, by supply line to No. one from network controller and a LED intelligent illumination network power transmission in network, equipment is properly functioning.
Master network controller controls switch K1 by Communication Control on-off circuit 2 and disconnects, the controllable silicon of SCR1 modulation simultaneously, SCR2 modulation controllable silicon work, digit pulse information controls SCR1 modulation controllable silicon through G1, G2 pulsed triggering circuit respectively, SCR2 modulation controllable silicon carries out phase-modulation to line voltage distribution.In " 101011001000 ", character is 0, then SCR1 modulation controllable silicon, SCR2 modulation controllable silicon are changed (phase-modulation) to half periodic phase angle, make waveform that small distortion to occur.Character is 1, and waveform is constant.The alternating current voltage of the corresponding waveform of ac power supply line L, N output.
Receive the modulation intelligence of supply line L, N, through MODEM modem, modulating wave is reduced to digital information (be digital " 0 " by modulated deformation half-wave from network controller, the half-wave not having deformation is numeral " 1 ") enter MCU pico computer, coding is reduced to " 101011001000 " by MCU pico computer.According to the trigger condition set in program, I/O mouth die block is exported, and then realize No. one from the communication of network controller, and a LED intelligent illumination network in network is carried out power consumption control.After communication completes, master network controller controls K1 Communication Control switch Guan Bi by Communication Control on-off circuit 2.
Seeing Fig. 5, connect multiple when network controller, master network controller is unified sends signal.Inside the MCU pico computer of network controller, trigger condition is set beforehand through program.Receive signal from the same time unification of network controller, reach the electrical equipment in this network being controlled from network controller of signal correspondence trigger condition, the most do not make control action.Realize a master network controller to multiple from network controller and from the communication of network powered device and control.
When communication starts, master network controller sends one section of initial signal before sending text signal, after network controller receives initial signal, if address is identical, prepares to accept to identify text signal.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that, for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
- null1. a local power utilization network online phase-modulation digital communication control system，Including supply line、Master network controller and from network controller，It is characterized in that: described master network controller be connected in parallel on supply line from network controller，Master network controller by supply line and carries out communication from network controller，It is controlled from network powered device connect from network controller from the internal program set in advance of network controller，Described master network controller is connected with supply line，Master network controller includes that K1 Communication Control switchs、SCR1 modulates controllable silicon、SCR2 modulates controllable silicon、Synchronized signal extracting circuit、Communication Control on-off circuit、Interface、MODULATOR manipulator and MCU microcontroller，Described include information retrieval circuit from network controller、Output control circuit、MCU pico computer、MODEM modem and I/O mouth die block.
- A kind of local power utilization network online phase-modulation digital communication control system the most according to claim 1, it is characterized in that: described supply line is AC AC network, the power input of supply line is in series with KM power control switch, be in series with the K1 Communication Control switch of master network controller from L line end, connecting between power supply input top L, N of described ac power supply line has anti-lightning strike antisurge and filter circuit.
- A kind of local power utilization network online phase-modulation digital communication control system the most according to claim 1, it is characterized in that: K1 Communication Control switch is connected from the L line end of supply line and entered supply line, described synchronized signal extracting circuit includes R1 current-limiting resistance, BD1 rectifier bridge, V1 photoelectrical coupler and R2 emitter-base bandgap grading sample resistance, one pin of described BD1 rectifier bridge is connected with R1 current-limiting resistance, and access the N(zero line of supply line), BD1 rectifier bridge and V1 photoelectrical coupler, the pin of V1 photoelectrical coupler is connected with R2 emitter-base bandgap grading sample resistance, described interface is connected with MCU microcontroller, external equipment and MCU microcontroller are carried out communication, interface is input/output interface, USB interface, interface of internet of things, keyboard interface, display interface device.
- A kind of local power utilization network online phase-modulation digital communication control system the most according to claim 1, it is characterised in that: described Communication Control on-off circuit is optically isolated controller.
- A kind of local power utilization network online phase-modulation digital communication control system the most according to claim 1, it is characterized in that: described SCR1 modulation controllable silicon, SCR2 modulation controllable silicon are the most in parallel, and simultaneously with K1 Communication Control switch in parallel, access the L line end of supply line, SCR1 modulation controllable silicon, SCR2 modulation controllable silicon mutually opposing (opposite polarity).
- A kind of local power utilization network online phase-modulation digital communication control system the most according to claim 1, it is characterized in that: described include information retrieval circuit from network controller, output control circuit, MCU pico computer, MODEM modem and I/O mouth die block, described information retrieval circuit includes R3 current-limiting resistance, BD2 rectifier bridge, V2 photoelectrical coupler and R4 emitter-base bandgap grading sample resistance, the pin of described BD2 rectifier bridge is connected with R3 current-limiting resistance, and access the N(zero line of supply line), BD2 rectifier bridge is connected with V2 photoelectrical coupler, the pin of V2 photoelectrical coupler is connected with R4 emitter-base bandgap grading sample resistance, described I/O mouth die block is MCU pico computer connectivity port, access simulation and switch etc. to control.
- A kind of local power utilization network online phase-modulation digital communication control system the most according to claim 1, it is characterised in that:Master network controller and the means of communication between network controller are:(1) change (phase-modulation) at half period phase angle a certain in AC network is made waveform occur small distortion to be " 0 " by definition, keep original electrical network a certain half period waveform is then numeral " 1 ", half period is a data bit, mains frequency is the numerical value of baud rate, and the carrier using ac power supply line to be communication network digital information flow；(2) in supply line, power supply KM power control switch Guan Bi, K1 Communication Control switch Guan Bi, given from network controller power transmission by supply line, properly functioning from network controller；(3) master network controller sends data to from network controller, master network controller controls switch K1 by Communication Control on-off circuit and disconnects, SCR1 modulates controllable silicon simultaneously, SCR2 modulation controllable silicon work, digit pulse information is respectively through G1, G2 pulsed triggering circuit controls SCR1 and modulates controllable silicon, SCR2 modulation controllable silicon carries out phase-modulation to line voltage distribution, character is 0, then SCR1 modulates controllable silicon, SCR2 modulation controllable silicon is changed (phase-modulation) to half periodic phase angle, make waveform that small distortion to occur, character is 1, waveform is constant, ac power supply line L, the alternating current voltage of the corresponding waveform of N output,(4) receiving the modulation intelligence of supply line L, N from network controller, through MODEM modem, modulating wave being reduced to digital information (is digital " 0 " by modulated deformation half-wave, the half-wave not having deformation is numeral " 1 ") enter MCU pico computer, after coding is reduced by MCU pico computer, according to the trigger condition set in program, I/O mouth die block is exported, and then realize the electrical equipment in network is carried out Based Intelligent Control(5) reach communication information represent trigger condition from network controller, the electrical equipment in this network is controlled, is not the most made control action,(6) communication completes, and master network controller controls K1 Communication Control switch Guan Bi by Communication Control on-off circuit.
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