CN102468769B - Communication system of alternating-current network - Google Patents
Communication system of alternating-current network Download PDFInfo
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- CN102468769B CN102468769B CN201010551674.2A CN201010551674A CN102468769B CN 102468769 B CN102468769 B CN 102468769B CN 201010551674 A CN201010551674 A CN 201010551674A CN 102468769 B CN102468769 B CN 102468769B
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Abstract
The present invention relates to a kind of communication system of alternating-current network, comprising: the modulation switch being connected to alternating current input power supplying, be arranged on AC/DC modular converter and the Signal analysis module of the electrical equipment side being linked into described AC network; Described modulation switch comprises MCU module, the mains switch be one another in series and controllable silicon, wherein said MCU module is connected to described silicon controlled and controls pole, and then controls described controllable silicon based on described silicon controlled threshold voltage and switch between opening and modulation condition; Described AC/DC modular converter, for receiving ac input signal and converting the described ac input signal received to detection signal under the control of described modulation switch; Described Signal analysis module, for receiving described detection signal, and converts based on the communication protocol of setting the signal of communication communicated with appliance chamber for modulation switch to by described detection signal.Implement the present invention, can the unnecessary noise of filtering, increase stability and the reliability of communication.
Description
Technical field
The present invention relates to communication system, more particularly, relate to a kind of communication system of alternating-current network.
Background technology
In traditional alternating current network, live wire and ground wire can only provide energy for electrical appliance, and cannot to electrical appliance transmission of signal.Necessary control inputs is all positioned at electrical appliance self and is all the direct-flow input signal under low-voltage.In order to solve this problem, the applying date is on July 16th, 2009, the application for a patent for invention CN200910108765.6 of " communication system of alternating-current network " by name provides a kind of communication system of alternating-current network, it adopts modulation switch to carry out switching (as shown in Figure 1) between diode paths and regular path, by AC/DC modular converter produces full wave rectified signal and half wave rectified signal, thus realize the object with electrical communication.The advantage of this technical scheme is that the modulation system of signal is simple, is easy to modulation and demodulation.But its transmission rate is because being limited by hot voltage concussion frequency, complete the time (as shown in Figure 2) that half-wave transmission needs 20ms, and complete once " 0 ", the transmission of " 1 " signal needs multiple continuous print half-wave voltage signal, the time needed is longer, and therefore its traffic rate is far below 50Hz.Therefore, the power supply capacity viewed from the angle of efficiency half-wave state on electrical network have dropped half, and some electrical appliance may be caused in actual applications normally to work.
Therefore, need a kind of more efficient communication system of alternating-current network with the speed improving communication and the impact reduced mains supply.
Summary of the invention
The technical problem to be solved in the present invention is, the efficiency for the communication system of alternating-current network of prior art is lower, the defect that communication speed is slower, provides a kind of and has higher traffic rate and the efficient ac communication system of power grids system less on mains supply impact.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of communication system of alternating-current network, comprising:
Be connected to the modulation switch of alternating current input power supplying, be arranged on AC/DC modular converter and the Signal analysis module of the electrical equipment side being linked into described AC network;
Described modulation switch comprises MCU module, the mains switch be one another in series and controllable silicon, wherein said MCU module is connected to described silicon controlled and controls pole, and then controls described controllable silicon based on described silicon controlled threshold voltage and switch between opening and modulation condition;
Described AC/DC modular converter, for receiving ac input signal and converting the described ac input signal received to detection signal under the control of described modulation switch;
Described Signal analysis module, for receiving described detection signal, and converts based on the communication protocol of setting the signal of communication communicated with appliance chamber for modulation switch to by described detection signal.
In communication system of alternating-current network of the present invention, the moving contact of described mains switch is connected to alternating current source, and closing contact is connected to described silicon controlled anode, and described silicon controlled negative electrode is connected to AC/DC module.
In communication system of alternating-current network of the present invention, the moving contact of described mains switch is connected to alternating current source, and closing contact is connected to described silicon controlled negative electrode, and described silicon controlled anode is connected to AC/DC module.
In communication system of alternating-current network of the present invention, described AC/DC modular converter comprises rectifying full bridge, direct current output diode and direct current output capacitance, modulation condition output diode, modulation condition output capacitance and the first resistance;
The first input end of wherein said rectifying full bridge is connected to AC power through described modulation switch, second input is connected to AC deposition, first output of described rectifying full bridge is connected to the anode of direct current output diode and the anode of described modulation condition output diode, the negative electrode of described direct current output diode is connected to the positive pole of direct current output capacitance, the negative pole of described direct current output capacitance is connected to the second output of described rectifying full bridge and the negative pole of described modulation condition output capacitance, the negative electrode of described modulation condition output diode is connected to the anode of modulation condition output capacitance, described first resistance is connected to the two ends of described modulation condition output capacitance.
In communication system of alternating-current network of the present invention, described AC/DC modular converter comprises transformer further, one end of wherein said transformer primary side is connected to AC power through described modulation switch, the other end on the former limit of described transformer is connected to AC deposition, and the first and second inputs of described rectifying full bridge are connected to the two ends of the secondary of transformer.
In communication system of alternating-current network of the present invention, comprise the information feedback module being arranged on electrical equipment side further, for judging and feed back the communications status of electrical equipment, the communications status of wherein said electrical equipment comprises idle condition, accepting state and executing state.
In communication system of alternating-current network of the present invention, described Signal analysis module receives the first detection signal of producing based on described silicon controlled first threshold voltage with formation logic 0 signal; Described Signal analysis module receives the second detection signal of producing based on described silicon controlled Second Threshold voltage to become raw logical one signal.
In communication system of alternating-current network of the present invention, the initiation communication signal that described Signal analysis module reception starts with generating identification valid function based on the 3rd detection signal that described silicon controlled the 3rd threshold voltage produces; The end signal of communication that described Signal analysis module reception terminates with generating identification valid function based on the 4th detection signal that described silicon controlled the 4th threshold voltage produces.
In communication system of alternating-current network of the present invention, the scope of described silicon controlled first threshold voltage, Second Threshold voltage, the 3rd threshold voltage and the 4th threshold voltage is 20V-200V.
Implement communication system of alternating-current network of the present invention, by improving modulation switch, solve the problem that original traffic rate is limited to the oscillation frequency of alternating current input power supplying, substantially increase traffic rate, and because the direct threshold voltage by setting reverse-blocking tetrode thyristor regulates the duty ratio of detection signal, data are transmitted by the change of detection signal waveform duty ratio, so the filter capacitor of electrical equipment end not only can not destroy the transfer of data of communication, on the contrary can the unnecessary noise of filtering, increase stability and the reliability of communication.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the circuit theory diagrams of the modulation switch of prior art;
Fig. 2 is the Signal transmissions schematic diagram of the modulation switch of prior art;
Fig. 3 is the circuit theory diagrams of the modulation switch of communication system of alternating-current network of the present invention;
Fig. 4 is the theory diagram of communication system of alternating-current network of the present invention;
Fig. 5 is the circuit theory diagrams of an embodiment of communication system of alternating-current network of the present invention;
Fig. 6 is the circuit theory diagrams of another embodiment of communication system of alternating-current network of the present invention;
Fig. 7 is the Signal transmissions schematic diagram of communication system of alternating-current network of the present invention;
Fig. 8 is the communication example of communication system of alternating-current network of the present invention;
Fig. 9 is the information feed back schematic diagram according to communication system of alternating-current network of the present invention.
Embodiment
Fig. 4 is the theory diagram of communication system of alternating-current network of the present invention.As shown in Figure 4, communication system of alternating-current network of the present invention comprises: the modulation switch being connected to alternating current input power supplying, is arranged on AC/DC modular converter and the Signal analysis module of the electrical equipment side being linked into described AC network.Described MCU module is connected to described silicon controlled and controls pole, and then controls described controllable silicon based on described silicon controlled threshold voltage and switch between opening and modulation condition.Described AC/DC modular converter, for receiving ac input signal and converting the described ac input signal received to detection signal under the control of described modulation switch; Described Signal analysis module, for receiving described detection signal, and converts based on the communication protocol of setting the signal of communication communicated with appliance chamber for modulation switch to by described detection signal.
Fig. 3 shows the circuit theory diagrams of modulation switch of the present invention, and as shown in Figure 3, described modulation switch comprises MCU module, the mains switch be one another in series and controllable silicon.The moving contact of wherein said mains switch is connected to alternating current source, and closing contact is connected to described silicon controlled anode, and described silicon controlled negative electrode is connected to AC/DC module.
In another preferred embodiment of the present invention, also can be designed to, the moving contact of described mains switch is connected to alternating current source, and closing contact is connected to described silicon controlled negative electrode, and described silicon controlled anode is connected to AC/DC module.
The control principle of above-mentioned two kinds of execution modes is substantially identical, is further introduced below with the embodiment shown in Fig. 3 to communication system of alternating-current network of the present invention.According to introduction of the present invention, it will be appreciated by those skilled in the art that the course of work and the principle of the communication system of alternating-current network formed when silicon controlled anode and negative electrode Opposite direction connection, be just not repeated at this.
Fig. 5 is the circuit theory diagrams of an embodiment of communication system of alternating-current network of the present invention.As shown in Figure 5, described AC/DC modular converter comprises rectifying full bridge BR1, direct current output diode D1 and direct current output capacitance C1, modulation condition output diode D2, modulation condition output capacitance C2 and the first resistance R.The first input end of described rectifying full bridge BR1 is connected to AC power through modulation switch, and the second input is connected to AC deposition.First output of described rectifying full bridge BR1 is connected to the anode of direct current output diode D1 and the anode of described modulation condition output diode D2, the negative electrode of described direct current output diode D1 is connected to the positive pole of direct current output capacitance C1, the negative pole of described direct current output capacitance C1 is connected to second output of described rectifying full bridge BR1 and the negative pole of described modulation condition output capacitance C2, the negative electrode of described modulation condition output diode D2 is connected to the anode of modulation condition output capacitance C1, and described first resistance R is connected to the two ends of described modulation condition output capacitance C2.
In this embodiment, direct current output capacitance C1 provide VD, value 10uF.Modulation condition output capacitance C2 and resistance R is used for all-view signal and detects, value 1pF and 10M.
Fig. 6 shows another embodiment of communication system of alternating-current network of the present invention.Its operating principle and structure and Fig. 5 substantially similar, and difference is, the embodiment shown in Fig. 6 comprises the transformer T for isolating further.The one end on the wherein said former limit of transformer T is connected to AC power through described modulation switch, and the other end on the former limit of described transformer is connected to AC deposition, and first and second inputs of described rectifying full bridge BR1 are connected to the two ends of the secondary of transformer T.
Except the embodiment shown in Fig. 5 and 6, other mode also can be adopted to realize according to communication system of alternating-current network of the present invention, concrete structure and operation principle can be see, the applying date is on June 30th, 2009, application for a patent for invention CN 200910108431.9 and the applying date of " direct-flow controlling device in AC system " by name are on July 16th, 2009, the description of the application for a patent for invention CN200910108765.6 of " communication system of alternating-current network " by name, these two sections of patents are quoted in this combination, with for referencial use.
Fig. 7 is the Signal transmissions schematic diagram of communication system of alternating-current network of the present invention.Below in conjunction with Fig. 5 and Fig. 7, the operation principle of communication system of alternating-current network of the present invention is further described.Can modulate ac input signal with the modulation switch shown in Fig. 5, namely AC/DC modular converter is by rectifier bridge BR1, first the ac input signal received is converted to phase modulated signal as shown in Figure 7.This phase modulated signal converted to detection signal as shown in Figure 7 by direct current output diode D1 and direct current output capacitance C1, modulation condition output diode D2, modulation condition output capacitance C2 and the first resistance R subsequently.And Signal analysis module can receive this detection signal, thus generate signal of communication based on this detection signal and predetermined communication protocol, thus complete more complicated Signal transmissions.
In the present invention, silicon controlled threshold voltage can be arranged arbitrarily modulate ac input signal, but consider the problem of electrical appliance job stability in practical application, therefore in a preferred embodiment of the invention, the silicon controlled threshold voltage ranges chosen during modulation is between 20-200V.
First the data communication realized on electrical network must define communication time slot, i.e. defining operation number signal of communication, logical zero and logical one.In addition, in order to the initial time clearly communicated, initiation communication signal can also be defined, i.e. " START " signal and end signal of communication, i.e. " END " signal.
In a preferred embodiment of the invention, described Signal analysis module receives the first detection signal of producing based on described silicon controlled first threshold voltage with formation logic 0 signal; Described Signal analysis module receives the second detection signal of producing based on described silicon controlled Second Threshold voltage to become raw logical one signal.In a preferred embodiment more of the present invention, the initiation communication signal that described Signal analysis module reception starts with generating identification valid function based on the 3rd detection signal that described silicon controlled the 3rd threshold voltage produces; The end signal of communication that described Signal analysis module reception terminates with generating identification valid function based on the 4th detection signal that described silicon controlled the 4th threshold voltage produces.Wherein, described first-four threshold voltage is different, and its magnitude range can between 20V-200V.In other preferred embodiments of the present invention, those skilled in the art also as required, can set different threshold voltages thus generate different signals of communication.
In the present invention, because the direct threshold voltage by setting reverse-blocking tetrode thyristor regulates the duty ratio of detection signal, data are transmitted by the change of detection signal waveform duty ratio, so the filter capacitor of electrical equipment end not only can not destroy the transfer of data of communication, on the contrary can the unnecessary noise of filtering, increase stability and the reliability of communication.
Fig. 8 is the communication example of communication system of alternating-current network of the present invention.Below in conjunction with Fig. 5 with Fig. 8, communicating of communication system of alternating-current network of the present invention is described.When not starting phase-modulation, namely do not set silicon controlled threshold size, when representing that the ac signal of arbitrary size all can pass through.At this moment modulation switch can be modulated ac input signal, and the duty ratio of the detection signal generated after AC/DC module converts is maximum, represents now do not have transfer of data.After setting silicon controlled threshold size, only be greater than the ac input signal of setting threshold just by (namely, when only having ac input signal to be greater than a certain set point, controllable silicon just conducting), cause the duty ratio of detection signal to change thereupon, therefore, this change thereupon by Signal analysis Module recognition, thus generates the signal of communication representing different implication.Such as, described Signal analysis module receives the first detection signal of producing based on being greater than silicon controlled first threshold voltage 90V with formation logic 0 signal.Described Signal analysis module receives the second detection signal of producing based on being greater than silicon controlled Second Threshold voltage 60V with formation logic 0 signal.
In other preferred embodiments of the present invention, those skilled in the art as required, can arrange " END " signal representing and terminate, " START " signal etc.Described Signal analysis module receives the first detection signal of producing based on being greater than silicon controlled the 3rd threshold voltage 120V to generate initiation communication signal.Described Signal analysis module receives the 4th detection signal produced based on being less than silicon controlled the 4th threshold voltage 200V and stops signal of communication to generate.
Due to the restriction of AC network characteristic, the one-way communication from modulation switch to electrical equipment can only be realized, and the communication from electrical equipment to modulation switch cannot be realized.For this reason, information feedback module can be increased at electrical equipment end, and then the mode such as sound or light of employing feeds back the signal that people can receive.Be illustrated in figure 9 a kind of feedback system adopting LED.The communications status of electrical equipment can be divided into " idle condition ", " accepting state ", " executing state " 3 states, can with " lamp goes out ", and " flicker ", " Chang Liang " 3 kinds of modes show.In other embodiments of the invention, display module can also be adopted show " idle condition ", " accepting state ", " executing state ".In another embodiment of the invention, buzzer can be adopted represent.For example, the sound that buzzer sends " dripping " represents " accepting state ", and the sound sending " beep " represents executing state ", and do not send sound and represent " idle condition ".Those skilled in the art also can as required, adopt other mode to represent different running statuses.In another embodiment of the invention, except communication state displaying, each electrical equipment also can comprise memory module, is used for according to instruction storage, more new data.
Implement communication system of alternating-current network of the present invention, by improving modulation switch, solve the problem that original traffic rate is limited to the oscillation frequency of alternating current input power supplying, substantially increase traffic rate, and because the direct threshold voltage by setting reverse-blocking tetrode thyristor regulates the duty ratio of detection signal, data are transmitted by the change of detection signal waveform duty ratio, so the filter capacitor of electrical equipment end not only can not destroy the transfer of data of communication, on the contrary can the unnecessary noise of filtering, increase stability and the reliability of communication.
Although the present invention is described by specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, various conversion can also be carried out and be equal to substituting to the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes fallen within the scope of the claims in the present invention.
Claims (8)
1. a communication system of alternating-current network, is characterized in that, comprising:
Be connected to the modulation switch of alternating current input power supplying, be arranged on AC/DC modular converter and the Signal analysis module of the electrical equipment side being linked into described AC network;
Described modulation switch comprises MCU module, the mains switch be one another in series and controllable silicon, wherein said MCU module is connected to described silicon controlled and controls pole, and then controls described controllable silicon based on described silicon controlled threshold voltage and switch between opening and modulation condition;
Described AC/DC modular converter, for receiving ac input signal and converting the described ac input signal received to detection signal under the control of described modulation switch;
Described Signal analysis module, for receiving described detection signal, and converts based on the communication protocol of setting the signal of communication communicated with appliance chamber for modulation switch to by described detection signal; Wherein, described Signal analysis module receives the first detection signal of producing based on described silicon controlled first threshold voltage with formation logic 0 signal; Described Signal analysis module receives the second detection signal of producing based on described silicon controlled Second Threshold voltage with formation logic 1 signal.
2. communication system of alternating-current network according to claim 1, is characterized in that, the moving contact of described mains switch is connected to alternating current source, and closing contact is connected to described silicon controlled anode, and described silicon controlled negative electrode is connected to AC/DC module.
3. communication system of alternating-current network according to claim 1, is characterized in that, the moving contact of described mains switch is connected to alternating current source, and closing contact is connected to described silicon controlled negative electrode, and described silicon controlled anode is connected to AC/DC module.
4. communication system of alternating-current network according to claim 1, is characterized in that, described AC/DC modular converter comprises rectifying full bridge, direct current output diode and direct current output capacitance, modulation condition output diode, modulation condition output capacitance and the first resistance;
The first input end of wherein said rectifying full bridge is connected to AC power through described modulation switch, second input is connected to AC deposition, first output of described rectifying full bridge is connected to the anode of direct current output diode and the anode of described modulation condition output diode, the negative electrode of described direct current output diode is connected to the positive pole of direct current output capacitance, the negative pole of described direct current output capacitance is connected to the second output of described rectifying full bridge and the negative pole of described modulation condition output capacitance, the negative electrode of described modulation condition output diode is connected to the anode of modulation condition output capacitance, described first resistance is connected to the two ends of described modulation condition output capacitance.
5. communication system of alternating-current network according to claim 4, it is characterized in that, described AC/DC modular converter comprises transformer further, one end of wherein said transformer primary side is connected to AC power through described modulation switch, the other end on the former limit of described transformer is connected to AC deposition, and the first and second inputs of described rectifying full bridge are connected to the two ends of the secondary of transformer.
6. communication system of alternating-current network according to claim 1, it is characterized in that, comprise the information feedback module being arranged on electrical equipment side further, for judging and feed back the communications status of electrical equipment, the communications status of wherein said electrical equipment comprises idle condition, accepting state and executing state.
7. communication system of alternating-current network according to claim 1, is characterized in that, the initiation communication signal that described Signal analysis module reception starts with generating identification valid function based on the 3rd detection signal that described silicon controlled the 3rd threshold voltage produces; The end signal of communication that described Signal analysis module reception terminates with generating identification valid function based on the 4th detection signal that described silicon controlled the 4th threshold voltage produces.
8. communication system of alternating-current network according to claim 7, is characterized in that, the scope of described silicon controlled first threshold voltage, Second Threshold voltage, the 3rd threshold voltage and the 4th threshold voltage is 20V-200V.
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102044980B (en) * | 2009-10-21 | 2013-02-13 | 辉芒微电子（深圳）有限公司 | Alternating current grid communication system |
| CN102779402B (en) * | 2012-07-19 | 2015-04-22 | 陈幼珠 | Control method and control device based on cutdown modulation of power signals |
| CN103812764A (en) * | 2012-11-09 | 2014-05-21 | 江苏省电力公司连云港供电公司 | Electrical monitoring equipment multiprotocol gateway |
| TWI661688B (en) * | 2017-03-30 | 2019-06-01 | 集邦聯合製造股份有限公司 | Communication method and device based on power line |
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| CN101090282A (en) * | 2006-06-15 | 2007-12-19 | 杭州瑞琦信息技术有限公司 | Power carrier communication circuit capable of overcome compensating capacitor |
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| CN102044980A (en) * | 2009-10-21 | 2011-05-04 | 辉芒微电子（深圳）有限公司 | Alternating current grid communication system |
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| CA2531295C (en) * | 2004-12-22 | 2013-10-22 | Odyne Corporation | Battery management and equalization system for batteries using power line carrier communications |
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| EP1344329A1 (en) * | 2000-12-21 | 2003-09-17 | The Autonomous Well Company Ltd. | Power line communications system |
| US7391168B1 (en) * | 2005-01-13 | 2008-06-24 | Universal Lighting Technologies, Inc. | Digital control of electronic ballasts using AC power lines as a communication medium |
| CN101090282A (en) * | 2006-06-15 | 2007-12-19 | 杭州瑞琦信息技术有限公司 | Power carrier communication circuit capable of overcome compensating capacitor |
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Address after: 518057, room 10, building 5-8, Changhong science and technology building, twelve South tech Road, Nanshan District Science Park, Shenzhen, Guangdong Patentee after: Huimang Microelectronics (Shenzhen) Co.,Ltd. Address before: 518057, building 10, building 5-8, Changhong technology building, twelve South tech Road, Nanshan District science and Technology Park, Shenzhen, Guangdong Patentee before: FREMONT MICRO DEVICES (SZ) Ltd. |