CN203561670U - Voltage and current circuit carrier wave isolation attenuation device - Google Patents
Voltage and current circuit carrier wave isolation attenuation device Download PDFInfo
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- CN203561670U CN203561670U CN201320434573.6U CN201320434573U CN203561670U CN 203561670 U CN203561670 U CN 203561670U CN 201320434573 U CN201320434573 U CN 201320434573U CN 203561670 U CN203561670 U CN 203561670U
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Abstract
The utility model discloses a voltage and current circuit carrier wave isolation attenuation device, comprising an electricity input end, an electric high frequency wave trapper, an electricity output end, a carrier wave loading interface, and a carrier wave impedance follower. The electric high frequency wave trapper is connected between the electricity input end and the electricity output end. The carrier wave loading interface is connected with the electricity output end. The carrier wave impedance follower is connected with the electricity output end. The device creates preconditions for related experiments.
Description
Technical field
The utility model relates to field of electrical equipment, relates in particular to a kind of electric current and voltage loop carrier wave isolation relaxation equipment.
Background technology
Voltage power-line carrier communication technology is a kind of local communication mode adopting in intelligent grid, and collection, the instruction that can realize well information issue, various functions such as monitoring, measure monitor in real time.
In prior art, to intelligent electric energy meter data reading system, cannot effectively examine, reason is just the detection test that does not also have corresponding equipment support to be correlated with.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of electric current and voltage loop carrier wave isolation relaxation equipment.
For addressing the above problem, the utility model proposes a kind of electric current and voltage loop carrier wave isolation relaxation equipment, comprise power input end, power high-frequency trap, power output end, carrier wave loading interface, carrier wave impedance follower; Wherein, described power high-frequency trap is connected between described power input end and power output end, and described carrier wave loading interface connects described power output end, and described carrier wave impedance follower is also connected with described power output end.
Wherein, described power input end comprises voltage input end and current input terminal, and described power output end comprises voltage output end and current output terminal, and described power high-frequency trap comprises voltage high-frenquency current blocking device and electric current high-frenquency current blocking device; Described voltage high-frenquency current blocking device is connected between described voltage input end and voltage output end, and described electric current high-frenquency current blocking device is connected between described current input terminal and current output terminal;
Described carrier wave loading interface is connected with described voltage output end, and described carrier wave impedance follower is connected across between described voltage output end and current output terminal.
Wherein, described carrier wave impedance follower also comprises signal transformation circuit.
Wherein, also comprise spacing output circuit, it is connected with the signal output of described carrier wave impedance follower.
Wherein, described carrier wave impedance follower comprises pulse input interface, pulse output interface and selects circuit, described pulse input interface is connected in the loop of described voltage output end and current output terminal formation, described pulse output interface is connected with described pulse input interface, and described selection circuit is can select frequency and impedance to access in the loop of described voltage output end and current output terminal formation.
Wherein, described carrier wave impedance follower also comprises serial communication interface, and this is walked communication interface and connects described selection circuit.
Wherein, described spacing output circuit comprises electrical to optical converter, photoelectric commutator and transmission channel; The input of described electrical to optical converter connects the signal output of described carrier wave impedance follower, and described transmission channel connects the output of described electrical to optical converter and the input of photoelectric commutator, and described photoelectric commutator outwards provides electric signal output.
Wherein, described carrier wave loading interface is for copying control device interface.
In the utility model, owing to having provided a kind of electric current and voltage loop carrier wave isolation relaxation equipment, this equipment, for correlation test provides carrier wave isolating means, has also met the coherent detection that tested ammeter is applied to carrier wave simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of a kind of electric current and voltage of the utility model loop carrier wave isolation relaxation equipment.
Embodiment
With reference to figure 1, illustrate the structural representation of an embodiment of a kind of electric current and voltage of the utility model loop carrier wave isolation relaxation equipment.As shown in the figure, comprise voltage input end 1, current input terminal 2, voltage high-frenquency current blocking device 3, electric current high-frenquency current blocking device 4, voltage output end 5, current output terminal 6, carrier wave loading interface 7, carrier wave impedance follower 8, spacing output circuit 9.
Described voltage high-frenquency current blocking device 3 is connected between described voltage input end 1 and voltage output end 5, and described electric current high-frenquency current blocking device 4 is connected between described current input terminal 2 and current output terminal 6.Output voltage and the electric current of described voltage output end 5 and electric current output 6 access tested ammeter (not shown).
7 of described carrier wave loading interfaces are loaded on described tested ammeter by carrier wave, can be specifically that the voltage and current that the carrier loop of described carrier wave loading interface 7 is incorporated to described voltage output end 5 and current output terminal 6 outputs accesses in the loop of tested ammeter.Preferably, described carrier wave loading interface 7 can multiplexingly be copied control device interface, because copy control device, is in the loop in tested ammeter.In figure, shown in arrow, flow to as the loop direction of carrier wave.
Described voltage high-frenquency current blocking device 3, for the high-frequency signal of the power-frequency voltage of voltage input end 1 access is carried out to filtering, thinks that follow-up carrier wave loads test and creates relatively pure high frequency environment; Equally, described electric current high-frenquency current blocking device 4, for the high-frequency signal of the power current of current input terminal 2 accesses is carried out to filtering, thinks that follow-up carrier wave loads test and creates relatively pure high frequency environment.In a preferred embodiment of the present utility model, described voltage input end 1 is connected respectively voltage source and current source with current input terminal 2.
Described voltage high-frenquency current blocking device 3 and electric current high-frenquency current blocking device 4 can be to be made by the high-frequency core that is wound with coil, and each high-frequency core both sides is wound with coil, and between input end phase line and output terminal ground wire electric capacity transboundary.
Described carrier wave impedance follower 8 is for exporting certain impedance to the carrier wave loading of described tested ammeter when the different frequencies as required, to meet detection demand.It comprises pulse input interface, pulse output interface, pulse shaping circuit, selection circuit, display circuit, serial communication interface.Wherein, described pulse input interface is for receiving the pulse signal from described tested ammeter, described pulse shaping circuit will output to pulse output interface after this pulse signal shaping, this pulse output interface by this output of pulse signal to spacing output circuit 9.Described selection circuit is for selecting different Frequency points and resistance value for user, and described display circuit is for showing interactive information, and described serial communication interface can accept to arrange the instruction of resistance value, for Long-distance Control.In described carrier wave impedance follower 8 the present embodiment, simultaneously as the output interface of detection signal, the process of its output pulse signal namely, is loaded on because this pulse signal is carrier wave the pulse signal producing in loop after tested ammeter.Described power supply is for powering to described carrier wave impedance follower 8.
Be appreciated that described pulse shaping circuit also can be independent from described carrier wave impedance follower 8 be to realize its function, at this, be no longer further elaborated.
Electric power described in the present embodiment is three-phase electricity, and described carrier wave impedance follower 8 can arrange respectively corresponding impedance output to three-phase electricity.This equipment can be realized the carrier wave isolation to the voltage and current loop of three-phase power simultaneously.
Described spacing output circuit 9 comprises electrical to optical converter, photoelectric commutator and transmission channel, in this transmission channel the present embodiment, is optical fiber.By electrical to optical converter, realize the conversion of electric signal to light signal, and then can utilize optical fiber to transmit, then by photoelectric commutator, reduced output.The conversion of described electric signal and light signal, has realized the isolation of this equipment with outside miscellaneous equipment, has guaranteed equipment dependability and security.
Being appreciated that given in the present embodiment is that electric power is the situation of three-phase electricity (shown in the A/a in figure, B/b, C/c), when adopting the situation of other type electric power, by above description, can reasoning obtain, thereby also no longer further sets forth.In addition, in the present embodiment, provided the situation that applies carrier wave (in figure shown in arrow) and apply impedance by described carrier wave impedance follower in A phase line of electric force, it can certainly be other two-phase, or combination wherein, or three-phase electricity all loads carrier wave or impedance, because those skilled in the art can analogize and obtain according to above description, therefore repeat no more.
In the utility model, due to carrier wave isolation relaxation equipment in electric current and voltage loop being provided, make the detection of the running under carrier communication load condition to tested ammeter become possibility.By high-frequency signal was intercepted before entering into tested ammeter one side, thereby for follow-up detection provides pure environment, can effectively detect the working order that only loads tested ammeter under carrier case.
Claims (8)
1. an electric current and voltage loop carrier wave isolation relaxation equipment, is characterized in that, comprises power input end, power high-frequency trap, power output end, carrier wave loading interface, carrier wave impedance follower; Wherein, described power high-frequency trap is connected between described power input end and power output end, and described carrier wave loading interface connects described power output end, and described carrier wave impedance follower is also connected with described power output end.
2. equipment as claimed in claim 1, it is characterized in that, described power input end comprises voltage input end and current input terminal, and described power output end comprises voltage output end and current output terminal, and described power high-frequency trap comprises voltage high-frenquency current blocking device and electric current high-frenquency current blocking device; Described voltage high-frenquency current blocking device is connected between described voltage input end and voltage output end, and described electric current high-frenquency current blocking device is connected between described current input terminal and current output terminal;
Described carrier wave loading interface is connected with described voltage output end, and described carrier wave impedance follower is connected across between described voltage output end and current output terminal.
3. equipment as claimed in claim 2, is characterized in that, described carrier wave impedance follower also comprises signal transformation circuit.
4. equipment as claimed in claim 1, is characterized in that, also comprises spacing output circuit, and it is connected with the signal output of described carrier wave impedance follower.
5. equipment as claimed in claim 1, it is characterized in that, described carrier wave impedance follower comprises pulse input interface, pulse output interface and selects circuit, described pulse input interface is connected in the loop of described voltage output end and current output terminal formation, described pulse output interface is connected with described pulse input interface, and described selection circuit is can select frequency and impedance to access in the loop of described voltage output end and current output terminal formation.
6. equipment as claimed in claim 5, is characterized in that, described carrier wave impedance follower also comprises serial communication interface, and this is walked communication interface and connects described selection circuit.
7. equipment as claimed in claim 4, is characterized in that, described spacing output circuit comprises electrical to optical converter, photoelectric commutator and transmission channel; The input of described electrical to optical converter connects the signal output of described carrier wave impedance follower, and described transmission channel connects the output of described electrical to optical converter and the input of photoelectric commutator, and described photoelectric commutator outwards provides electric signal output.
8. the equipment as described in any one in claim 1 to 7, is characterized in that, described carrier wave loading interface is for copying control device interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320434573.6U CN203561670U (en) | 2013-07-22 | 2013-07-22 | Voltage and current circuit carrier wave isolation attenuation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320434573.6U CN203561670U (en) | 2013-07-22 | 2013-07-22 | Voltage and current circuit carrier wave isolation attenuation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203561670U true CN203561670U (en) | 2014-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320434573.6U Expired - Fee Related CN203561670U (en) | 2013-07-22 | 2013-07-22 | Voltage and current circuit carrier wave isolation attenuation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203561670U (en) |
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2013
- 2013-07-22 CN CN201320434573.6U patent/CN203561670U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140423 |