CN105334404A - Artificial mains network - Google Patents
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- CN105334404A CN105334404A CN201410258134.3A CN201410258134A CN105334404A CN 105334404 A CN105334404 A CN 105334404A CN 201410258134 A CN201410258134 A CN 201410258134A CN 105334404 A CN105334404 A CN 105334404A
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Abstract
The invention relates to an artificial mains network. In one embodiment of the invention, the artificial mains network comprises an interference measuring module for receiving interference signals of a tested device and outputting different interference measuring signals according to different measuring modes for measurement of a measuring device; and a control module for controlling the measuring mode of the interference measuring module. For instance, the measuring mode of the interference measuring module can comprise L-line interference measurement, N-line interference measurement, differential mode interference measurement and common-mode interference measurement. According to the invention, the artificial mains network has a common and differential mode interference separating function, can ensure the performance feature of the artificial mains network, guarantees the reliability of a conducted interference measurement result and can also provide an interference type for design personnel during correction and analysis of conducted interference for assistance of the correction and analysis.
Description
Technical field
Relate generally to artificial mains network of the present invention, more specifically, relates to a kind of artificial mains network with common differential mode separation function.
Background technology
Along with Modern technological progress, more and more diversified to the demand of electronic product.For guaranteeing that multiclass electronic product co-operation in same environment is run, the electromagnetic compatibility problem of electronic product is more and more outstanding.At present, most electronic product needed to do electromagnetic compatibility measurement certification to it before listing.Conduction Interference transmitting is the main measure the item of electromagnetic compatibility.Often can run into the situation that transmitted value exceeds respective specified limit value when carrying out Conduction Interference emission measurement to electronic product, in the case, designer just needs to carry out rectification to product and analyzes.
At present, the method that Conduction Interference rectification is analyzed mainly contains three kinds, the first: empirical method, designer is according to the experience solving Conduction Interference problem in the past, work out some to product and attempt countermeasure, solve Conduction Interference problem by the method for attempting, measuring, reattempting, measuring, the method has cost-effective advantage, but many times consuming time very long, and rely on the experience of designer completely; The second: by filter method, designer increases a wave filter on product, measure again and observe improvement situation, the method has easy enforcement, and the advantage that device cost is cheap, but the filtering characteristic of wave filter normally obtains under 50 Ω measuring systems, and the impedance of different product is had nothing in common with each other, many times increase the improvement that wave filter cannot obtain expecting; The third: use differential mode separation equipment altogether; the program is having ripe common mode differential mode separation equipment on the market; and can measures of quantization data; designer can obtain interference type according to measurement result; corresponding measure is taked again according to interference type (common mode or differential mode); but the enforcement of the program needs two artificial mains networks (AMN); testing cost increases; the use of differential mode separation equipment may cause the overall impedance of electric power network to offset altogether simultaneously, brings measuring error.
Summary of the invention
Provide hereinafter about brief overview of the present invention, to provide about the basic comprehension in some of the present invention.Should be appreciated that this general introduction is not summarize about exhaustive of the present invention.It is not that intention determines key of the present invention or pith, and nor is it intended to limit the scope of the present invention.Its object is only provide some concept in simplified form, in this, as the preorder in greater detail discussed after a while.
According to an aspect of the present invention, propose a kind of artificial mains network, comprising: interference measurement module, for receiving the undesired signal of equipment under test, and pressing different measuring pattern output disturbance measuring-signal, measuring for measuring equipment; And control module, for controlling the measurement pattern of interference measurement module.Such as, the measurement pattern of interference measurement module can comprise L line interferometry, N line interferometry, and differential mode interference is measured and common mode interference is measured.
According to the present invention, make artificial mains network have common differential mode interference separation function, both can ensure the Performance Characteristics of artificial mains network, guarantee the reliable of Conduction Interference measurement result, interference type can be provided for designer when rectifying and improving and analyzing Conduction Interference again, analyze to assist rectification.
Accompanying drawing explanation
Below with reference to the accompanying drawings illustrate embodiments of the invention, above and other objects, features and advantages of the present invention can be understood more easily.Parts in accompanying drawing are just in order to illustrate principle of the present invention.In the accompanying drawings, same or similar technical characteristic or parts will adopt same or similar Reference numeral to represent.
Fig. 1 is the structural drawing of the artificial mains network according to one embodiment of the present invention;
The structural drawing of an example of the pre-processing module that Fig. 2 is artificial mains network shown in Fig. 1;
Fig. 3 is the circuit diagram of an example of the module of decoupling zero shown in Fig. 2;
The circuit diagram of the example that Fig. 4 is coupling module shown in Fig. 2;
The structural drawing of an example of the interference measurement module that Fig. 5 is artificial mains network shown in Fig. 1;
The circuit diagram of the example that Fig. 6 is interference measurement module shown in Fig. 5;
Fig. 7 illustrates the circuit diagram of a kind of exemplary circuit configuration of pre-processing module, interference measurement module and output module in artificial mains network shown in pie graph 1;
Fig. 8 illustrates the exemplary block diagram of the control module in artificial mains network shown in pie graph 1;
Fig. 9 illustrates the circuit diagram of an example of the panel control unit in control module shown in Fig. 8;
Figure 10 illustrates the circuit diagram of an example of the control signal generation unit in control module shown in Fig. 8;
Figure 11 illustrates the circuit diagram of a kind of exemplary circuit configuration of the display module in artificial mains network shown in pie graph 1; And
Figure 12 illustrates the exemplary circuit diagram of the overall system control of the artificial mains network according to one embodiment of the present invention, which includes the exemplary panel control module shown in Fig. 9, the exemplary control signal generation unit shown in Figure 10 and the exemplary display module shown in Figure 11.
Embodiment
With reference to the accompanying drawings embodiments of the invention are described.The element described in an accompanying drawing of the present invention or a kind of embodiment and feature can combine with the element shown in one or more other accompanying drawing or embodiment and feature.It should be noted that for purposes of clarity, accompanying drawing and eliminate expression and the description of unrelated to the invention, parts known to persons of ordinary skill in the art and process in illustrating.
Shown in Figure 1, be the structural drawing of the artificial mains network 1 according to one embodiment of the present invention.
In the present embodiment, artificial mains network 1 such as comprises pre-processing module 10, interference measurement module 20, output module 30, control module 40 and display module 50.In addition, Fig. 1 also illustrates external AC electrical network and equipment under test (EUT).
Wherein, the undesired signal of equipment under test EUT for reducing the interference of external AC electrical network, and is coupled to next stage by pre-processing module 10.Interference measurement module 20 has disturbance measurement pattern, and variety classes undesired signal can be selected to measure, such as, can measure L line-hit, N line-hit, common mode interference and differential mode interference.Output module 30 exports for interference measurement module 20 being measured the undesired signal obtained.Control module 40 switches between different interferometry patterns for controlling interference measurement module 20.To be described in more detail below, control module 40 can pass through button or switch manual manipulation, also can Remote Acquisitioning control signal.Display module 50 carrys out mode of operation residing for display interference measurement module 20 by the such as display device such as bright light or display screen, that is, L line interferometry pattern, N line interferometry pattern, common mode interference measurement pattern or differential mode interference measurement pattern.
See Fig. 2, the structural drawing of an example of the pre-processing module 10 of artificial mains network 1 shown in Fig. 1 is shown.
In one embodiment, pre-processing module 10 can comprise decoupling zero module 11 and coupling module 12.Citing, the exemplary circuit diagram of decoupling zero module 11 and coupling module 12 respectively as shown in Figure 3 and Figure 4.It should be appreciated by those skilled in the art that all circuit diagrams shown in this instructions are all for illustrative purposes, only a kind of example implementations of corresponding module is provided, it is contemplated that other equivalent circuit also can be used for realizing the function of corresponding module.
Composition graphs 2-4, can clearer understanding according to the principle of work of the pre-processing module 10 in artificial mains network 1 of the present invention.Decoupling zero module 11 for accessing electric power signal from external AC electrical network, and reduces the electromagnetic interference (EMI) of external power signal.The undesired signal of equipment under test EUT for the electric power signal of isolating exterior AC electrical network, and is coupled to next stage by coupling module 12.Such as, interference in AC electrical network 150kHz-30MHz frequency range can be reduced more than 40dB by decoupling zero module 11, the interference that the input electrical signal making the interference in AC electrical network 150kHz-30MHz frequency range be far smaller than equipment under test produces, thus ensure that undesired signal that artificial mains network measures is that the input electrical signal of equipment under test itself sends.
The exemplary circuit diagram that Fig. 3 is the module of decoupling zero shown in Fig. 2 11.
In figure 3, one end of decoupling zero module is connected to the input of AC electrical network, comprise live wire (L) zero line (N) ground wire (PE) three lines, be connected to L corresponding to electrical network N PE tri-lines.The other end of decoupling zero module is EUT port, connect the input electrical signal of equipment under test EUT, comprise live wire (EUT-L) zero line (EUT-N) ground wire (EUT-PE) three lines, be connected respectively to L corresponding to equipment under test EUT N PE tri-lines.
The circuit diagram of the example that Fig. 4 is coupling module 12 shown in Fig. 2.
In the diagram, the undesired signal of equipment under test EUT is coupled to next stage circuit by coupled circuit, is isolated by the power-frequency voltage signal of 50Hz simultaneously.One end of this coupled circuit connects EUT port, that is, EUT-L, EUT-N and EUT-PE tri-lines, the equipment under test undesired signal be coupled out is exported to next stage circuit and processed by the other end.As shown in the figure, " Output_L " is the undesired signal of coupling output " EUT-L " line, and " Output_N " is the undesired signal of coupling output " EUT-N " line.
Next, interference measurement module 20 included in artificial mains network 1 will be described.Fig. 5 illustrates the structural drawing of an example of the interference measurement module 20 of artificial mains network 1.As shown in the figure, in this example, interference measurement module 20 comprises common differential mode interference extraction unit 25 and four switch S 121, S222, S323 and S424.Altogether differential mode interference extraction unit 25 is for by the common mode component CM of the undesired signal on EUT-L line and EUT-N line and differential-mode component DM separation and Extraction out, as required common mode component or differential-mode component are outputted to measuring equipment, read value or differential mode interference reads value to obtain common mode interference.Switch S 1, S2, S3 and S4 receive from the control signal of control module 40, and different interferometry patterns is selected in collaborative work, variety classes undesired signal (interference of L line, the interference of N line, common mode interference or differential mode interference) is outputted to measuring equipment.
Fig. 6 illustrates a kind of exemplary circuit diagram of interference measurement module 20 shown in Fig. 5.
In circuit shown in Fig. 6, be input to switch S 1 from the EUT-L line undesired signal Output_L of prime pre-processing module 10 and EUT-N line undesired signal Output_N.Switch S 1, S2 and S4 are formed " L/N line interference transmission circuit ", for the different on off operating modes by switch S 1, S2 and S4, EUT-L line undesired signal or EUT-N line undesired signal are coupled to rear class output module 30, carry out measuring and reading for measuring equipment.An exemplary circuit of output module 30 will illustrate with reference to figure 7 subsequently.
In addition, as shown in Figure 6, in one example, differential mode interference extraction unit 25 can comprise following assemblies altogether: common mode separation vessel CMSplitter, differential mode separation vessel DMSplitter, resistance R18 and R19.Be to be understood that, shown in Fig. 6, the circuit composition of differential mode interference extraction unit 25 is only exemplarily altogether, those skilled in the art it is contemplated that other circuit form, and go out common mode component CM and differential-mode component DM for separation and Extraction from the undesired signal on EUT-L line and EUT-N line.Therefore, differential mode interference extraction unit 25 and switch S 1, S3 and S4 combine and form " common mode/differential mode interference transmission circuit " altogether, their collaborative works, so that common mode interference CM or differential mode interference DM is outputted to rear class output module 30, carry out measuring and reading for measuring equipment.
First, on " L/N line interference transmission circuit ", by setting aside switch S 1, EUT-L line undesired signal Output_L and EUT-N line undesired signal Output_N is coupled as " TEST_L " and " TEST_N ", then output to the output module 30 of rear class through the combinative movement of S2 and S4, carry out measuring and reading for measuring equipment.As shown in Figure 7, a wherein road of L line circuit and N line circuit chooses the receiver " Receiver " of 50 Ω impedances to carry out measuring and reading, and the terminal of 50 Ω blocked impedance R6 then can only be chosen in another road.As shown in Figure 6, " OP2+ ", " OP2-" is the control signal for switch S 2 from control module 40 (will describe below), " OP4+ ", and " OP4-" is the control signal for switch S 4 from control module 40.As " OP2+ ", when the voltage difference of " OP2-" is 0V, S2 sets aside; " OP4+ ", when the voltage difference of " OP4-" is 0V, S4 sets aside, L line circuit is selected, undesired signal on " TEST_L " outputs on the receiver " Receiver " of 50 Ω impedances as output signal REC, finally be read out, the undesired signal on " TEST_N " is then connected on the terminal resistance R6 of 50 Ω as output TER.On the other hand, as " OP2+ ", the voltage difference of " OP2-" is upper group of+5V, S2; " OP4+ ", when the voltage difference of " OP4-" is 0V, S4 sets aside, and N line circuit is selected, and the undesired signal on " TEST_N " outputs on the receiver " Receiver " of 50 Ω impedances as output signal REC, is finally read out; Undesired signal on " TEST_L " is connected on the terminal resistance R6 of 50 Ω as output TER.
On " common mode/differential mode interference transmission circuit ", as illustrated in Figures 5 and 6, by push aside close S1, EUT-L line undesired signal Output_L and EUT-N line undesired signal Output_N be coupled as " SEL_L " and " SEL_N ".Then, obtain the common mode component of undesired signal through common mode separation vessel CMSplitter, and obtain the differential-mode component of undesired signal through differential mode separation vessel DMSplitter." OP3+ ", " OP3 "-be control signal for switch S 3 from control module 40, " OP4+ ", " OP4-" is the control signal for switch S 4 from control module 40.As " OP3+ ", when the voltage difference of " OP3 " is 0V, S3 sets aside; " OP4+ ", when the voltage difference of " OP4-" is+5V, S4 is upper to be dialled, common mode pattern is selected, common mode interference component " CM " is output on the receiver " Receiver " of 50 Ω impedances as output signal REC, common mode component is read out, and differential mode interference component " DM " is output on the resistance R6 of 50 Ω impedances as output TER.On the other hand, as " OP3+ ", when the voltage difference of " OP3 " is+5V, S3 is upper to be dialled; " OP4+ ", when the voltage difference of " OP4-" is+5V, S4 is upper to be dialled, differential mode pattern is selected, differential mode interference component " DM " is output on the receiver " Receiver " of 50 Ω impedances, and differential-mode component is read out, and common mode interference component " CM " is output on the terminal resistance R6 of 50 Ω.
In circuit shown in Fig. 6, common mode separation vessel CM_Splitter is for separating of the common mode component going out undesired signal, and in the frequency range of 150kHz ~ 30MHz, insertion loss is less than 1dB, and common mode differential mode rejection ratio is greater than 20dB; Differential mode separation vessel DM_Splitter isolates the differential-mode component of undesired signal, and in the cps of 150kHz ~ 30MHz, insertion loss is less than 1dB, and differential mode common-mode rejection ratio is greater than 20dB.
" L/N line interference transmission circuit " is combined see with " common mode/differential mode interference transmission circuit ", by the combinative movement of four double-point double-throw switchs S1, S2, S3 and S4, achieve the selection of different test pattern on circuit, output to measuring equipment with the undesired signal realizing equipment under test EUT by selected test pattern.As mentioned above, " Output_L ", " Output_N " are the EUT-L line undesired signal and EUT-N line undesired signal that export from the coupling module 12 of prime.By selecting different interferometry patterns from the combinative movement of the control signal " OPX+ " of control module 40, " OPX-" (X is 1,2,3,4) gauge tap S1, S2, S3, S4.Specifically, as OPX+ ", voltage difference between " OPX-" is when being+5V, respective switch is dialled, and when voltage difference is 0V, respective switch is set aside.Therefore, when S1 dials, S2, when S3, S4 all set aside, the interference of L line is selected, undesired signal on " TEST_L " is output on the receiver " Receiver " of 50 Ω impedances, be finally read out, and the undesired signal on " TEST_N " is connected on the terminal resistance R6 of 50 Ω; Work as S1, S2, S3 are all upper to be dialled, when S4 sets aside, N circuit is selected, and the undesired signal on " TEST_N " is output on the receiver " Receiver " of 50 Ω impedances, finally be read out, and the undesired signal on " TEST_L " is connected on the middle terminal resistance R6 of 50 Ω.Work as S1, S2, S3 all set aside, and during upper group of S4, common mode line is selected, and the undesired signal on " CM " is output on the receiver " Receiver " of 50 Ω impedances, be finally read out, and the undesired signal on " DM " is connected on the middle terminal resistance R6 of 50 Ω; When S1 sets aside, when all upper group of S2, S3, S4, differential mode line is selected, and the undesired signal on " DM " is output on the receiver " Receiver " of 50 Ω impedances, be finally read out, and the undesired signal on " CM " is connected on the middle terminal resistance R6 of 50 Ω.Specifically see Fig. 6.
Above reference diagram 5 and 6 describes exemplary circuit configuration according to the interference measurement module of artificial mains network of the present invention and principle of work.In order to be more convenient for understanding, Fig. 7 illustrates the circuit diagram of the exemplary circuit configuration of pre-processing module 10, interference measurement module 20 and output module 30 in artificial mains network 1 on the whole.This circuit diagram as just example, but not limits the scope of the invention, and those skilled in the art easily imagine other circuit implementations, for realizing the function of pre-processing module 10, interference measurement module 20 and output module 30.
The control system part of the artificial mains network 1 according to the embodiment of the present invention is described, that is, control module 40 and display module 50 below with reference to Fig. 8,9,10.
Fig. 8 illustrates the exemplary block diagram of control module 40, and this control module 40 comprises panel control unit 41 and control signal generation unit 42.Fig. 9 illustrates the exemplary circuit diagram of panel control unit 41, and Figure 10 illustrates the exemplary circuit diagram of control signal generation unit 42.
As shown in Figure 9, in one example, the circuit of panel control unit 41 is as figure.In this example, panel controls is control interferometry model selection by the panel button on artificial mains network.Four buttons " N_Local " on panel, " L_Local ", " CM_Local ", " DM_Local " corresponding L line interferometry pattern, N line interferometry pattern, common mode component measurement pattern and differential-mode component measurement pattern respectively.When pressing " N_Local " button, N interferometry pattern is selected, and when other buttons are pressed, corresponding measurement pattern is selected.Under normal operation, a button is only allowed to be pressed.In addition, panel also comprises a knob control S6, for selecting input pattern.When knob S6 is left-handed, be in panel control model; When knob S6 dextrorotation, be in distance control mode.
The exemplary circuit diagram of control signal generation unit 42 shown in Figure 10.In this example, four road deck control knobs " N_Local ", " L_Local ", " CM_Local ", the input signal of " DM_Local ", the level signal " N_REMOTE " that four great distance process controls are selected, " L_REMOTE ", " CM_REMOTE ", " DM_REMOTE " and control model select signal " Select_control " as input, by the process of control signal generation unit 42, export four groups of voltage " OP1+, OP1-", " OP2+, OP2-", " OP3+, OP3-", " OP4+, OP4-" respectively as to the switch S 1 comprised in interference measurement module 20 shown in Fig. 5, S2, S3, the control signal of S4.And, control signal generation unit 42 also exports four road pilot lamp control signal N_LED ", " L_LED ", " CM_LED ", " DM_LED "; output to display module 50, to be lighted by the lamp of in display module 50, for showing selected interferometry pattern.Wherein, " N_Local ", " L_Local ", " CM_Local ", " DM_Local " and " N_REMOTE ", " L_REMOTE ", " CM_REMOTE ", " DM_REMOTE " eight road input control signal can only have a road be low level input.
When as " N_Local " or " N_REMOTE ", one of them is low level, other input signals of control signal generation unit 42 are high level, after control signal generation unit 42 processes, " OP1+ ", " OP1-" both end voltage difference is+5V, " OP2+ ", " OP2-" both end voltage difference is+5V, " OP3+ ", " OP3-" both end voltage difference is+5V, " OP4+ ", " OP4-" both end voltage difference is 0V, by switch S 1, S2, S3, S4 combinative movement selection circuit, final N line interferometry pattern is selected, and N line pilot lamp is lit simultaneously.
When as " L_Local " or " L_REMOTE ", one of them is low level, after control signal generation unit 42 processes, " OP1+ ", " OP1-" both end voltage difference is 0V, " OP2+ ", " OP2-" both end voltage difference is 0V, " OP3+ ", " OP3-" both end voltage difference is 0V, and " OP4+ ", " OP4-" both end voltage difference is+5V, by switch S 1, S2, S3, S4 combinative movement selection circuit, final L line interferometry pattern is selected, and L line pilot lamp is lit simultaneously.
When as " CM_Local " or " CM_REMOTE ", one of them is low level, after control signal generation unit 42 processes, " OP1+ ", " OP1-" both end voltage difference is 0V, " OP2+ ", " OP2-" both end voltage difference is 0V, " OP3+ ", " OP3-" both end voltage difference is 0V, and " OP4+ ", " OP4-" both end voltage difference is+5V, by switch S 1, S2, S3, S4 combinative movement selection circuit, final common mode interference measurement pattern is selected, and CM pilot lamp is lit simultaneously.
When as " DM_Local " or " DM_REMOTE ", one of them is low level, after control signal generation unit 42 processes, " OP1+ ", " OP1-" both end voltage difference is 0V, " OP2+ ", " OP2-" both end voltage difference is+5V, " OP3+ ", " OP3-" both end voltage difference is+5V, " OP4+ ", " OP4-" both end voltage difference is+5V, by switch S 1, S2, S3, S4 combinative movement selection circuit, final differential mode interference measurement pattern is selected, and DM pilot lamp is lit simultaneously.
When panel being selected the knob S6 of control model left-handed, " Select_control " is dragged down, then network is in panel control model; When knob S6 dextrorotation, " Select_control " is driven high, and network is in distance control mode.
Figure 11 illustrates a kind of exemplary circuit diagram of display module 50.
In this example, display module 50 is for showing the interferometry pattern chosen." N-LED ", " L-LED ", " CM-LED ", " DM-LED " are the selected pilot lamp of one of instruction four kinds of measurement patterns.One of them pilot lamp is only had to be lit during normal work.When N-LED lamp is bright, represents and choose N line interferometry pattern; When L-LED lamp is bright, L line interferometry pattern in Biao Shi Election; When CM-LED lamp is bright, represents and choose common mode interference measurement pattern; When DM-LED lamp is bright, represents and choose differential mode interference measurement pattern.
LOCAL-LED, REMOTE-LED are the display lamps of control model.Only have in two pilot lamp during normal work wherein one be lit.When LOCAL-LED lamp is bright, represents current and be in panel input control pattern; When REMOTE-LED lamp is bright, represents current and be in remote input control model.
In order to be more convenient for understanding, Figure 12 illustrates the exemplary circuit diagram of the overall system control according to artificial mains network of the present invention on the whole.Which includes the panel control unit 41 shown in Fig. 9, the control signal generation unit 42 shown in Figure 10 and the display module shown in Figure 11 50.
Adopt artificial mains network of the present invention, designing and producing consideration differential mode separation function altogether in artificial mains network's process, make the function that artificial mains network is separated with common mode, differential mode, thus both can ensure the Performance Characteristics of artificial mains network, guarantee the reliable of Conduction Interference measurement result simultaneously, interference type can be provided for designer when rectifying and improving and analyzing Conduction Interference again, assist rectification to analyze.
Above some embodiments of the present invention are described in detail.As one of ordinary skill in the art can be understood, whole or any step of method and apparatus of the present invention or parts, can in the network of any computing equipment (comprising processor, storage medium etc.) or computing equipment, realized with hardware, firmware, software or their combination, this is that those of ordinary skill in the art use their basic programming skill just can realize when understanding content of the present invention, therefore need not illustrate at this.
In addition, it is evident that, when relating to possible peripheral operation in superincumbent explanation, any display device and any input equipment, corresponding interface and control program that are connected to any computing equipment will be used undoubtedly.Generally speaking, related hardware in computing machine, computer system or computer network, software and realize the hardware of the various operations in preceding method of the present invention, firmware, software or their combination, namely form equipment of the present invention and each building block thereof.
Should emphasize, term " comprises/comprises " existence referring to feature, key element, step or assembly when using herein, but does not get rid of the existence or additional of one or more further feature, key element, step or assembly.
Although described the present invention and advantage thereof in detail, be to be understood that and can have carried out various change when not exceeding the spirit and scope of the present invention limited by appended claim, substituting and conversion.And scope of the present invention is not limited only to the specific embodiment of process, equipment, means, method and step described by instructions.One of ordinary skilled in the art will readily appreciate that from disclosure of the present invention, can use perform the function substantially identical with corresponding embodiment described herein or obtain and its substantially identical result, existing and that will be developed in the future process, equipment, means, method or step according to the present invention.Therefore, appended claim is intended to comprise such process, equipment, means, method or step in their scope.
Claims (21)
1. an artificial mains network, comprising:
Interference measurement module, for receiving the undesired signal of equipment under test, and pressing different measuring pattern output disturbance measuring-signal, measuring for measuring equipment;
Control module, for controlling the measurement pattern of described interference measurement module,
Wherein, the measurement pattern of described interference measurement module comprises L line interferometry, N line interferometry, and differential mode interference is measured and common mode interference is measured.
2. artificial mains network according to claim 1, also comprises:
Pre-processing module, described pre-processing module receives the electric power signal from external AC electrical network, reduces the electromagnetic interference (EMI) of described AC electrical network, and the undesired signal of described equipment under test is coupled to the described interference measurement module of rear class.
3. artificial mains network according to claim 2, wherein, described pre-processing module comprises decoupling zero module and coupling module, and described decoupling zero module reduces the electromagnetic interference (EMI) from described AC electrical network;
The undesired signal of described equipment under test is coupled to the described interference measurement module of rear class by described coupling module.
4. artificial mains network according to claim 3, wherein, the interference of described external AC electrical network is reduced more than 40dB by described decoupling zero module.
5. artificial mains network according to claim 1, wherein, the undesired signal of described equipment under test comprises L line undesired signal and N line undesired signal.
6. artificial mains network according to claim 1, wherein, the interferometry signal exported from described interference measurement module comprises L line undesired signal, N line undesired signal, differential mode interference signal and common mode interference signal.
7. artificial mains network according to claim 1, wherein, described interference measurement module comprises common differential mode interference extraction unit, for extracting common mode interference component and differential mode interference component from the undesired signal from described equipment under test.
8. artificial mains network according to claim 7, wherein, described differential mode interference extraction unit altogether comprises common mode separation vessel and differential mode separation vessel, and described common mode separation vessel is for extracting described common mode interference component, and described differential mode separation vessel is for extracting described differential mode interference component.
9. artificial mains network according to claim 1, wherein, described interference measurement module comprises the switches set be made up of multiple switch, is operated in different interferometry patterns for selecting described interference measurement module.
10. artificial mains network according to claim 7, also comprises the switches set be made up of four switch S 1, S2, S3 and S4, for selecting described interference measurement module to be operated in different interferometry patterns, wherein
Described switch S 1 is for receiving the undesired signal from described equipment under test;
Described switch S 4, for exporting interferometry signal under disturbance measurement pattern to rear class measuring equipment, is measured and reading for measuring equipment;
Described switch S 1, S2, S4 L/N line in series undesired signal path, for being coupled to described measuring equipment by L line undesired signal or N line undesired signal; And
Described switch S 1, described altogether differential mode interference extraction unit, described switch S 3 and S4 differential mode interference signal path altogether in series, for by common mode interference signal or differential mode interference signal coupling to described measuring equipment.
11. artificial mains networks according to claim 1, wherein, described control module comprises panel control unit and control signal generation unit, described panel control unit for receiving from this floor plate or long-range steering order, and indicates described control signal generation unit to generate the control signal of the interferometry pattern for controlling described interference measurement module.
12. artificial mains networks according to claim 11, wherein, described panel control unit comprises four buttons on device panel, is respectively used to select L line interferometry pattern, N line interferometry pattern, common mode interference measurement pattern and differential mode interference measurement pattern.
13. artificial mains networks according to claim 11, wherein, described panel control unit receives remote control commands, to select L line interferometry pattern, N line interferometry pattern, common mode interference measurement pattern and differential mode interference measurement pattern.
14. artificial mains networks according to claim 12, wherein, described panel control unit is by remote control commands described in RS232 port accepts.
15. artificial mains networks according to claim 11, wherein, described panel control unit also comprises knob, controls or Long-distance Control for being selected this floor plate by knob described in left-handed or dextrorotation.
16. artificial mains networks according to claim 11, wherein, the control signal that described control signal generation unit generates for control each switch in the switches set in described interference measurement module upper group or set aside, thus select different interferometry patterns.
17. artificial mains networks according to claim 1, also comprise display module, for showing interferometry pattern residing in described interferometry work pattern.
18. artificial mains networks according to claim 17, wherein, described display module comprises four jamming pattern display lamps, shows disturbance measurement pattern by lighting disturbance pattern display lamp.
19. artificial mains networks according to claim 17, wherein, described display module comprises two control model display lamps, by light different control model display lamp show described control module be this floor plate control or Long-distance Control.
20. artificial mains networks according to claim 1, also comprise output module, and this output module is positioned at the rear class of described interference measurement module, for interferometry signal being outputted to outside measuring equipment.
21. artificial mains networks according to claim 20, wherein, described output module is receiver path.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258134.3A CN105334404B (en) | 2014-06-11 | 2014-06-11 | Artificial mains network |
| TW103136959A TWI538340B (en) | 2014-06-11 | 2014-10-27 | Artificial mains network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410258134.3A CN105334404B (en) | 2014-06-11 | 2014-06-11 | Artificial mains network |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106100316A (en) * | 2016-07-11 | 2016-11-09 | 深圳市知用电子有限公司 | Artificial mains network's circuit |
| CN112433086A (en) * | 2020-12-17 | 2021-03-02 | 山东省计量科学研究院 | Terminal voltage measurement network of split type air conditioner interconnection line |
| CN112731017A (en) * | 2020-12-21 | 2021-04-30 | 北京无线电计量测试研究所 | Device for measuring and rectifying conduction emission items of power line |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN105334404B (en) | 2018-10-23 |
| TWI538340B (en) | 2016-06-11 |
| TW201547150A (en) | 2015-12-16 |
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Effective date of registration: 20210204 Address after: 215200 no.1688, Jiangxing East Road, Wujiang Economic Development Zone, Suzhou City, Jiangsu Province Patentee after: Delta Electronics (Jiangsu) Ltd. Address before: 215200 no.1688, Jiangxing East Road, Wujiang Economic Development Zone, Suzhou City, Jiangsu Province Patentee before: DELTA ELECTRONICS COMPONENTS (WUJIANG) Ltd. |