CN103036592A - Power line wideband communication signal attenuation method - Google Patents
Power line wideband communication signal attenuation method Download PDFInfo
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- CN103036592A CN103036592A CN2012105389873A CN201210538987A CN103036592A CN 103036592 A CN103036592 A CN 103036592A CN 2012105389873 A CN2012105389873 A CN 2012105389873A CN 201210538987 A CN201210538987 A CN 201210538987A CN 103036592 A CN103036592 A CN 103036592A
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Abstract
The invention discloses a power line wideband communication signal attenuation method which comprises the steps. S1, a power line wideband communication signal is divided into two power line wideband communication signals which are connected in parallel; S2, a part of a power line wideband communication signal allows current to pass and is processed by a low-frequency signal high-frequency signal resistance signal; S3, the other part of the power line wideband communication signal conducts signal attenuation processing; S4, a signal which passes in a step S2 and the signal which passes in a step 3 are coupled together, and the step S2 and the step S3 are simultaneously conducted. When a power line is ensured to be normally galvanized, the power line wideband communication signal can be attenuated, current is stable, electrical equipment in a whole experiment network works stably, and the unnecessary problem that environment can not be really simulated due to abnormal power supply is avoided.
Description
Technical field
The present invention relates to the attenuator field, relate in particular to a kind of broadband power line communication signal attenuation method.
Background technology
In the Experimental Network of simulation power line communication, usually need the power wire broadband carrier communication signal attenuation of artificial site, long-distance transmissions with analog communication signal, but prior art is in analog electrical line of force signal attenuation process, the power line that invariably accompanies can not be powered normally, causes occurring in the simulation process some unnecessary problems.
Summary of the invention
The present invention is in order to solve in the Experimental Network of simulation power line communication, and broadband power line communication can also be decayed to the broadband carrier signal on the power line when guaranteeing the power line normal power-up.
The invention provides a kind of broadband power line communication signal attenuation method, its method is,
S1, a broadband power line communication signal is divided into the broadband power line communication signal of two parts parallel connection;
S2, the processing that a part of broadband power line communication signal is allowed electric current to pass through and leads to low frequency signal resistance high-frequency signal;
S3, the broadband power line communication signal of another part is carried out signal attenuation process;
S4, the signal that step S2 is passed through arrive with the signal coupling that step S3 passes through.
Above-mentioned step S2, S3 carry out simultaneously.
Wherein, described step S3 is specially:
S31, the processing of the broadband power line communication signal being led to high-frequency signal resistance low frequency signal;
S32, the broadband power line communication high frequency signal attenuation that obtains after will processing are processed.
Wherein, among the described step S31, also the electric current on the power line broadband is done to cut off and process, the method for cutting off electric current is at power line borad-band path series connection one capacitor.
Wherein, the described step S31 high-frequency signal frequency range that allows to pass through is 1MHz to 100MHz.
Wherein, the broadband power line communication signal among the described step S3 can be divided into the broadband power line communication signal of many parts of parallel connections and carry out respectively attenuation processing, is coupled to together at last.
Wherein, the described step S2 low frequency signal frequency range that allows to pass through is 0Hz to 1KHz.
Wherein, the pad value the when signal attenuation of described step S3 is processed can be set, and its range of set value is 0dB-100dB.
The invention has the beneficial effects as follows: be different from the damped system of prior art, in deamplification, also will play the alive effect of power line, so that it is unaffected to power; The present invention separates electric current and broadband power line communication signal, again the broadband power line communication signal is decayed, and then be coupled to together, like this in the broadband power line communication signal attenuation process, when guaranteeing the power line normal power-up, can also decay to the broadband power line communication signal on the power line so that each electrical equipment steady operation in the whole Experimental Network, not can because of undesired power supply cause can't the real simulation environment etc. unnecessary problem.
Description of drawings
Fig. 1 is a kind of FB(flow block) of broadband power line communication signal attenuation method of the present invention.
Fig. 2 is a kind of schematic diagram of broadband power line communication signal attenuation method of the present invention.
Embodiment
By describing technology contents of the present invention, structural feature in detail, realized purpose and effect, below in conjunction with execution mode and cooperate that accompanying drawing is detailed to give explanation.
See also Fig. 1 and Fig. 2, present embodiment provides a kind of broadband power line communication signal attenuation method, and its method is,
S1, a broadband power line communication signal is divided into the broadband power line communication signal of two parts parallel connection;
S2, the processing that a part of broadband power line communication signal is allowed electric current to pass through and leads to low frequency signal resistance high-frequency signal;
S3, the broadband power line communication signal of another part is carried out signal attenuation process;
S4, the two parts of signals of handling is coupled on the power line at last;
Above-mentioned steps S2, S3 carry out simultaneously.Namely as shown in Figure 2, the broadband power line communication signal is at first on a main line, the main line comprises live wire and zero line, then described main line is divided into two branch roads, wherein one be allow electric current by and lead to the branch road of low frequency signal resistance high-frequency signal, another is the branch road that the broadband power line communication signal is decayed, and last two branch roads are coupled again.The present invention separates electric current and broadband power line communication signal, again the broadband power line communication signal is decayed, and then be coupled to together, the broadband power line communication signal is in attenuation process like this, can when guaranteeing the power line normal power-up, can also decay current stabilization to the broadband power line communication signal on the power line, so that each electrical equipment steady operation in the whole Experimental Network, not can because of power undesired cause can't the real simulation environment etc. unnecessary problem.
In the present embodiment, described step S3 is specially:
S31, the processing of the broadband power line communication signal being led to high-frequency signal resistance low frequency signal;
S32, the broadband power line communication high frequency signal attenuation that obtains after will processing are processed.
In described step S31, also the electric current on the power line broadband is done to cut off and process, the method of cutting off electric current is at power line borad-band path series connection one capacitor, this capacitor also plays the effect that part broadband power line communication signal passes through that hinders, the processing of then the broadband power line communication signal being led to high-frequency signal resistance low frequency signal, the signal frequency range that it allows to pass through is 1MHz to 100MHz, to all filter out less than the impurity signal of a certain characteristic frequency (such as 1MHz), and then the broadband power line communication high-frequency signal after will processing carries out attenuation processing, namely carry out step S32, it can be that the broadband power line communication signal is got involved in the attenuator circuit that the signal attenuation of described step S32 is processed, generally use the variable T-shaped attenuator circuit of symmetric form, can certainly use other attenuator circuit, such as L-type attenuator circuit etc.The broadband power line communication signal is exactly among this scope of 1MHz to 100MHz in common laboratory or the reality, also be fine if enlarge the scope of deamplification frequency, but can increase cost etc., and there is no need, special situation can special processing certainly.
In the present embodiment, when carrying out described step S3, the signal attenuation value can be set, the scope of setting generally be 0dB to 100dB, can satisfy the selection that different experiments or demand are finished pad value like this.
In the present embodiment, when carrying out described step S2, generally be the broadband power line communication signal to be linked into carry out filtering in the filter network, the low frequency signal frequency range that permission is passed through is 0Hz to 1KHz, electric current will all isolate out greater than the signal of 1KHz, and the power supply that provides in the laboratory generally all is the alternating current of direct current or 50Hz, so can pass through smoothly, the present invention kept simultaneously the stable of electric current, so that can provide stable electric current.
The present invention of course not only has above-described embodiment, and this is a kind of, can also be with the broadband power line communication signal parallel connection among the step S3 be divided into many parts, such as 2 parts or more, these broadband power line communication signals in parallel carry out respectively signal attenuation to be processed, then be coupled to together, the broadband power line communication signal carries out can cooperating deamplification when signal attenuation is processed like this, so that the transform data of pad value is more.Certainly, the broadband power line communication signal of step S2 also can be divided into many parts of parallel connections, but nonsensical, so do not recommend.
The above only is embodiments of the invention; be not so limit claim of the present invention; every equivalent structure or equivalent flow process conversion that utilizes specification of the present invention and accompanying drawing content to do; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (7)
1. broadband power line communication signal attenuation method, its method be,
S1, a broadband power line communication signal is divided into the broadband power line communication signal of two parts parallel connection;
S2, the processing that a part of broadband power line communication signal is allowed electric current to pass through and leads to low frequency signal resistance high-frequency signal;
S3, the broadband power line communication signal of another part is carried out signal attenuation process;
S4, the signal that step S2 is passed through arrive with the signal coupling that step S3 passes through;
Above-mentioned step S2, S3 carry out simultaneously.
2. broadband power line communication signal attenuation method according to claim 1 is characterized in that described step S3 is specially:
S31, the processing of the broadband power line communication signal being led to high-frequency signal resistance low frequency signal;
S32, the broadband power line communication high frequency signal attenuation that obtains after will processing are processed.
3. broadband power line communication signal attenuation method according to claim 2 is characterized in that, among the described step S31, also the electric current on the power line is done to cut off and processes, and the method for cutting off electric current is at power line path series connection one capacitor.
4. broadband power line communication signal attenuation method according to claim 2 is characterized in that, the high-frequency signal frequency range that described step S31 allows to pass through is 1MHz to 100MHz.
5. broadband power line communication signal attenuation method according to claim 1 is characterized in that, the broadband power line communication signal among the described step S3 is divided into the broadband power line communication signal of many parts of parallel connections and carries out respectively attenuation processing, is coupled to together at last.
6. broadband power line communication signal attenuation method according to claim 1 is characterized in that, the low frequency signal frequency range that described step S2 allows to pass through is 0Hz to 1KHz.
7. according to claim 1 to 6 each described broadband power line communication signal attenuation methods, it is characterized in that the pad value the when signal attenuation of described step S3 is processed can be set, its range of set value is 0dB-100dB.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071835A (en) * | 2015-07-29 | 2015-11-18 | 北京智芯微电子科技有限公司 | Broadband carrier communication attenuation circuit and coupling circuit |
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| CN201966909U (en) * | 2011-01-24 | 2011-09-07 | 南京致德软件科技有限公司 | Integrated test system for low-voltage narrowband power line carrier communication |
| CN102655422A (en) * | 2011-03-02 | 2012-09-05 | 华北电力科学研究院有限责任公司 | Test system for low-voltage power carrier communication equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201966909U (en) * | 2011-01-24 | 2011-09-07 | 南京致德软件科技有限公司 | Integrated test system for low-voltage narrowband power line carrier communication |
| CN102655422A (en) * | 2011-03-02 | 2012-09-05 | 华北电力科学研究院有限责任公司 | Test system for low-voltage power carrier communication equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071835A (en) * | 2015-07-29 | 2015-11-18 | 北京智芯微电子科技有限公司 | Broadband carrier communication attenuation circuit and coupling circuit |
| CN105071835B (en) * | 2015-07-29 | 2018-06-01 | 北京智芯微电子科技有限公司 | A kind of bandwidth carrier communication attenuator circuit and termination power |
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Application publication date: 20130410 |