CN205377869U - Based on power line carrier data transmission circuit - Google Patents
Based on power line carrier data transmission circuit Download PDFInfo
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- CN205377869U CN205377869U CN201620113337.8U CN201620113337U CN205377869U CN 205377869 U CN205377869 U CN 205377869U CN 201620113337 U CN201620113337 U CN 201620113337U CN 205377869 U CN205377869 U CN 205377869U
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Abstract
The utility model relates to a based on power line carrier data transmission circuit is applied to three -sphase four -wire system transmission line, three -sphase four -wire system transmission line includes that A looks, B looks, C look at and appraise and neutral conductor N, including resonance circuit group, protective diode and a coupling transformer, resonance circuit group is including a resonance circuit, the 2nd resonance circuit and the 3rd resonance circuit, the utility model discloses a device is few, wholly easily realizes, the synchronism is high, low -power consumption, high accuracy, the strong based on power line carrier data transmission circuit of interference killing feature.
Description
Technical field
The present invention relates to power consumer electricity consumption information and gather field, more particularly to a kind of electrically-based carrier wave data transmission circuit.
Background technology
Electrically-based carrier wave data transmission circuit is for current domestic power information acquisition system research, and mainly with power line carrier for main data transfer mode, it utilizes existing electric lines of force, is carried out the transmission of data by carrier system.Its Main Function is weak electric signal and civil power to be isolated, and will also need to the signal of transmission simultaneously and is coupled to mains circuit.The civil power accessed according to coupling circuit can be divided into single-phase coupling circuit and coupling circuit.
Current low-voltage power carrier coupling circuit generally comprises coupling transformer, safety electric capacity, high-voltage capacitance, TVS diode etc., is substantially and is placed on same circuit board to form coupling by three single phase low voltage power carriers coupling electrical combination simply.
After the formal enforcement of national grid power user power consumption information acquisition system 13 release criteria; domestic power information collecting device and electric energy meter substantially all carry high voltage protective function by standard; so; matching used low-voltage power carrier coupling circuit need not redesign high tension protection circuit part; and just the circuit of existing low-voltage power carrier coupling at present is still generally provided with high-voltage capacitance and nonessential isolating device; there are components and parts more, the shortcoming that production cost is of a relatively high.
Summary of the invention
In view of this, in order to solve existing low-voltage power carrier coupling circuit, there is structure complexity, components and parts are many, the problem that cost is high, and the application provides a kind of and adopts device few, entirety is easily achieved, synchronicity is high, low-power consumption, in high precision, capacity of resisting disturbance strong basis is in power carrier data transmission circuit, and technical scheme is as follows:
A kind of electrically-based carrier wave data transmission circuit, is applied to three-phase four-wire system transmission line of electricity, and described three-phase four-wire system transmission line of electricity includes A phase, B phase, C phase and neutral conductor N, including resonance circuit group, protection diode and a coupling transformer；Described resonance circuit group includes the first resonance circuit, the second resonance circuit and the 3rd resonance circuit；
Three-phase four-wire system transmission line of electricity includes A phase, B phase, C phase and neutral conductor N, including resonance circuit group, protection diode and a coupling transformer；Described resonance circuit group includes the first resonance circuit, the second resonance circuit and the 3rd resonance circuit；
Described first resonance circuit is arranged in described A phase, and described second resonance circuit is arranged in described B phase, and described 3rd resonance circuit is arranged in described C phase；
Described protection diode is arranged between coupling transformer primary side two pins；
Wherein, described resonance circuit group is between described protection diode；After described coupling transformer is placed in described protection diode;
Described zero cross detection circuit includes photoelectrical coupler, and input 1 foot of described photoelectrical coupler, 2 feet are connected on A phase and neutral conductor N respectively, and outfan 3 foot of described photoelectrical coupler is connected to running voltage VCC by resistance R4,4 foot ground connection.
Preferably, described zero cross detection circuit includes the electric capacity C1 in parallel with described photoelectrical coupler.
Preferably, described zero cross detection circuit includes the diode D1 in parallel with described photoelectrical coupler.
Preferably, in above-mentioned electrically-based carrier wave data transmission circuit, described resonance circuit includes electric capacity and the inductance of series connection.
Preferably, in above-mentioned electrically-based carrier wave data transmission circuit, also include a road power amplifier and a road demodulator circuit；
After described power amplifier and described demodulator circuit are placed in described coupling transformer.
Preferably, in above-mentioned electrically-based carrier wave data transmission circuit, the electric capacity of described series connection is safety electric capacity, and inductance is punching inductance.
Preferably, in above-mentioned electrically-based carrier wave data transmission circuit, described protection diode model is P6KE24CA.
Technique scheme has the advantages that
Electrically-based carrier wave data transmission circuit has been simplified by the embodiment of the present invention, only use three electric capacity to carry out coupling and isolating in the 380V side of three-phase four-wire system transmission line of electricity, by isolating, the weak electric signal obtained is made directly short circuit, so, follow-up having only to connects a coupling transformer, therefore, compared with existing electrically-based carrier wave data transmission circuit, the electrically-based carrier wave data transmission circuit that the embodiment of the present invention provides decreases the material of 2/3 on coupling transformer, provide cost savings, additionally circuit structure also becomes simple, simultaneously in order to realize the synchronicity of carrier wave data transmission, the zero-crossing examination accuracy of ac grid voltage seems even more important, add a pack low-power dissipation zero cross detection circuit, there is low-power consumption, in high precision, the features such as capacity of resisting disturbance is strong.
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 the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the accompanying drawing provided.
A kind of structural representation of the electrically-based carrier wave data transmission circuit that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Current electrically-based carrier wave data transmission circuit generally comprises coupling transformer, safety electric capacity, high-voltage capacitance, TVS diode etc., is substantially and is placed on same circuit board to form coupling by three single phase low voltage power carriers coupling electrical combination simply.This design is simply to be combined by the coupling circuit that three independent, and its input and output are 3 tunnels, thus causes needs 3 road power amplification circuit and No. 3 demodulator circuits so that components and parts are many, and circuit structure is complicated, and cost is high.
Referring to Fig. 1, the embodiment of the present invention provides a kind of electrically-based carrier wave data transmission circuit, including resonance circuit group, protection diode DT1, a coupling transformer T1；Resonance circuit group includes the first resonance circuit, the second resonance circuit and the 3rd resonance circuit.
This electrically-based carrier wave data transmission circuit is applied to three-phase four-wire system transmission line of electricity, and three-phase four-wire system transmission line of electricity includes A phase, B phase, C phase and neutral conductor N.First resonance circuit is arranged in A phase, and the second resonance circuit is arranged in B phase, and the 3rd resonance circuit is arranged in C phase；Protection diode is arranged between coupling transformer primary side two pins；Described resonance circuit group is between described protection diode；After described coupling transformer is placed in described protection diode.
It should be noted that protection diode is only provided with DT1, the Main Function of this protection diode is to force the signal clamper that receives to 22V, in order to the process of rear class light current circuit, is prevented effectively from late-class circuit and is damaged by big voltage signal.Preferably, the TVS that above-mentioned protection diode can select model to be P6KE24CA protects diode.
T1 is coupling transformer, and coupling transformer can be coupled to line by sending signal, and meanwhile, coupling transformer T1 also provides for certain no-load voltage ratio, plays and will send the purpose that signal code strengthens.
Electrically-based carrier wave data transmission circuit has been simplified by the embodiment of the present invention, only use three electric capacity to carry out coupling and isolating in the 380V side of three-phase four-wire system transmission line of electricity, by isolating, the weak electric signal obtained is made directly short circuit, so, follow-up having only to connects a coupling transformer, therefore, compared with existing electrically-based carrier wave data transmission circuit, the electrically-based carrier wave data transmission circuit that the embodiment of the present invention provides decreases the material of 2/3 on coupling transformer, providing cost savings, additionally circuit structure also becomes simple.
Further, electrically-based carrier wave data transmission circuit can also include a road power amplifier and a road demodulator circuit, and after this power amplifier and demodulator circuit are placed in coupling transformer, power amplifier and demodulator circuit are two-way arranged side by side, power amplifier is used for sending, and demodulator circuit is used for receiving.The electrically-based carrier wave data transmission circuit that the embodiment of the present invention provides only need to provide a coupling transformer, a road power amplifier and a road demodulator circuit can realize the function of original coupling circuit, and compared with existing electrically-based carrier wave data transmission circuit, the electrically-based carrier wave data transmission circuit that the embodiment of the present invention provides decreases the material of 2/3 on coupling transformer, power amplifier and demodulator circuit, therefore, the electrically-based carrier wave data transmission circuit that inventive embodiments provides provides cost savings, and additionally circuit structure also becomes simple.
Additionally, owing to three-phase low-voltage power carrier communication module profile has relevant standard, and the design of existing electrically-based carrier wave data transmission circuit adds quantity and circuit complexity under specific profile, difficulty is brought for placement-and-routing, and strong and weak electricity is apart from wayward, cause that product pressure resistance reduces.And the electrically-based carrier wave data transmission circuit that the embodiment of the present invention provides, owing to follow-up connects a coupling transformer, a road power amplifier and a road demodulator circuit, therefore, simple compared to existing coupling circuit in placement-and-routing, and add strong and weak electricity distance.
In other embodiments of the present invention, above-mentioned resonance circuit includes electric capacity and the inductance of series connection.As it is shown in figure 1, C1 and L1, C2 and L2, C3 and L3 respectively constitute three groups of LC series resonant circuits, its resonant frequency is communication scheme frequency, so electric lines of force noise signal can be played filter action.C1, C2, C3 therein are safety electric capacity, are isolated by city's signal of telecommunication of safety electric capacity just 50Hz.L1, L2, L3 are punching inductance.Through this resonance circuit, the most of pulse shock on 220V civil power, periodic disturbances all can effectively be filtered, and then reaches the purpose of protection light current circuit.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually referring to.
Finally, it can further be stated that, in this article, the relational terms of such as first, second, third, etc. etc is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (7)
1. an electrically-based carrier wave data transmission circuit; it is applied to three-phase four-wire system transmission circuit; described three-phase four-wire system transmission circuit includes A phase, B phase, C phase and neutral conductor N, it is characterised in that include resonance circuit group, protection diode, a coupling transformer and zero cross detection circuit；Described resonance circuit group includes the first resonance circuit, the second resonance circuit and the 3rd resonance circuit；
Described first resonance circuit is arranged in described A phase, and described second resonance circuit is arranged in described B phase, and described 3rd resonance circuit is arranged in described C phase；
Described protection diode is arranged between coupling transformer primary side two pins；
Wherein, described resonance circuit group is between described protection diode；After described coupling transformer is placed in described protection diode；
Described zero cross detection circuit includes photoelectrical coupler, and input 1 foot of described photoelectrical coupler, 2 feet are connected on A phase and neutral conductor N respectively, and outfan 3 foot of described photoelectrical coupler is connected to running voltage VCC by resistance R4,4 foot ground connection.
2. electrically-based carrier wave data transmission circuit according to claim 1, it is characterised in that described zero cross detection circuit includes the electric capacity C1 in parallel with described photoelectrical coupler.
3. electrically-based carrier wave data transmission circuit according to claim 1, it is characterised in that described zero cross detection circuit includes the diode D1 in parallel with described photoelectrical coupler.
4. electrically-based carrier wave data transmission circuit according to claim 1, it is characterised in that described resonance circuit includes electric capacity and the inductance of series connection.
5. electrically-based carrier wave data transmission circuit according to claim 1, it is characterised in that also include a road power amplifier and a road demodulator circuit；
After described power amplifier and described demodulator circuit are placed in described coupling transformer.
6. electrically-based carrier wave data transmission circuit according to claim 4, it is characterised in that the electric capacity of described series connection is safety electric capacity, and inductance is punching inductance.
7. the electrically-based carrier wave data transmission circuit according to claim 1-5 any one, it is characterised in that described protection diode model is P6KE24CA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620113337.8U CN205377869U (en) | 2016-02-04 | 2016-02-04 | Based on power line carrier data transmission circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620113337.8U CN205377869U (en) | 2016-02-04 | 2016-02-04 | Based on power line carrier data transmission circuit |
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| CN205377869U true CN205377869U (en) | 2016-07-06 |
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| CN201620113337.8U Active CN205377869U (en) | 2016-02-04 | 2016-02-04 | Based on power line carrier data transmission circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711922A (en) * | 2017-02-17 | 2017-05-24 | 中领世能（天津）科技有限公司 | Electrical shock protection device and power supply system |
| CN106711923A (en) * | 2017-02-17 | 2017-05-24 | 中领世能（天津）科技有限公司 | Isolation protection device and power supply system |
| CN107040283A (en) * | 2016-02-04 | 2017-08-11 | 杭州炬华科技股份有限公司 | One kind is based on power carrier data transmission circuit |
-
2016
- 2016-02-04 CN CN201620113337.8U patent/CN205377869U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040283A (en) * | 2016-02-04 | 2017-08-11 | 杭州炬华科技股份有限公司 | One kind is based on power carrier data transmission circuit |
| CN106711922A (en) * | 2017-02-17 | 2017-05-24 | 中领世能（天津）科技有限公司 | Electrical shock protection device and power supply system |
| CN106711923A (en) * | 2017-02-17 | 2017-05-24 | 中领世能（天津）科技有限公司 | Isolation protection device and power supply system |
| CN106711922B (en) * | 2017-02-17 | 2018-06-08 | 中领世能（天津）科技有限公司 | Electrical shock protective device and electric power system |
| CN106711923B (en) * | 2017-02-17 | 2018-06-19 | 中领世能（天津）科技有限公司 | Isolating and protecting device and electric power system |
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