CN204008882U - Artificial mains network - Google Patents
Artificial mains network Download PDFInfo
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- CN204008882U CN204008882U CN201420310641.2U CN201420310641U CN204008882U CN 204008882 U CN204008882 U CN 204008882U CN 201420310641 U CN201420310641 U CN 201420310641U CN 204008882 U CN204008882 U CN 204008882U
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Abstract
The utility model relates to a kind of artificial mains network.In one example, this artificial mains network comprises: interference measurement module, for receiving the undesired signal of equipment under test, and press different measuring pattern output disturbance measuring-signal, and measure for measuring equipment; And control module, for controlling the measurement pattern of interference measurement module.For example, 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 utility model, make artificial mains network there is common differential mode interference separation function, both can ensure artificial mains network's Performance Characteristics, guarantee the reliable of Conduction Interference measurement result, again can be for designer provides interference type in the time that Conduction Interference is analyzed in rectification, to assist rectification to analyze.
Description
Technical field
The utility model relate generally to artificial mains network, more specifically, relates to a kind of artificial mains network with common differential mode separation function.
Background technology
Along with modern technologies progress, more and more diversified to the demand of electronic product.For guaranteeing the co-operation operation in same environment of multiclass electronic product, the electromagnetic compatibility problem of electronic product is more and more outstanding.At present, most electronic products needed it to do electromagnetic compatibility measurement certification before listing.Conduction Interference transmitting is the main measure the item of electromagnetic compatibility.In the time that electronic product is carried out to Conduction Interference emission measurement, often can run into the situation that transmitting value exceeds respective specified limit value, in the case, designer just need to rectify and improve analysis to product.
At present, the method that Conduction Interference rectification is analyzed mainly contains three kinds, the first: empirical method, designer is according to the experience that solved Conduction Interference problem in the past, product is worked out to some 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 designer's experience completely; The second: by filter method, designer increases a wave filter on product, measure again the improvement situation of observing, 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 wave filter and cannot obtain the improvement of expecting; The third: use differential mode separation equipment altogether; this scheme 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; take corresponding measure according to interference type (common mode or differential mode) again; but the enforcement of this scheme 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 be offset altogether simultaneously, brings measuring error.
Utility model content
Provide hereinafter about brief overview of the present utility model, to the basic comprehension about some aspect of the present utility model is provided.Should be appreciated that this general introduction is not about exhaustive general introduction of the present utility model.It is not that intention is determined key of the present utility model or pith, neither be intended to limit scope of the present utility model.Its object is only that the form of simplifying provides some concept, using this as the preorder in greater detail of discussing after a while.
According to an aspect of the present utility model, a kind of artificial mains network is proposed, comprising:
Interference measurement module, for receiving the undesired signal of equipment under test, and presses different measuring pattern output disturbance measuring-signal, measures 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, differential mode interference is measured and common mode interference is measured;
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.
According to the utility model, make artificial mains network there is common differential mode interference separation function, both can ensure artificial mains network's Performance Characteristics, guarantee the reliable of Conduction Interference measurement result, again can be for designer provides interference type in the time that Conduction Interference is analyzed in rectification, to assist rectification to analyze.
Brief description of the drawings
With reference to the explanation to the utility model embodiment below in conjunction with accompanying drawing, can understand more easily above and other objects, features and advantages of the present utility model.Parts in accompanying drawing are just in order to illustrate principle of the present utility model.In the accompanying drawings, same or similar technical characterictic or parts will adopt same or similar Reference numeral to represent.
Fig. 1 is according to the artificial mains network's of a kind of embodiment of the utility model structural drawing;
Fig. 2 is the structural drawing of an example of the pre-processing module of artificial mains network shown in Fig. 1;
Fig. 3 is the circuit diagram of an example of decoupling zero module shown in Fig. 2;
Fig. 4 is the circuit diagram of an example of coupling module shown in Fig. 2;
Fig. 5 is the structural drawing of an example of the interference measurement module of artificial mains network shown in Fig. 1;
Fig. 6 is the circuit diagram of an example of interference measurement module shown in Fig. 5;
Fig. 7 illustrates the circuit diagram of a kind of exemplary circuit configuration of the pre-processing module in artificial mains network, interference measurement module and output module 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 module 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 according to the exemplary circuit diagram of the artificial mains network's of a kind of embodiment of the utility model overall system control, comprising the exemplary display module shown in exemplary panel control module, the exemplary control signal generation unit shown in Figure 10 and the Figure 11 shown in Fig. 9.
Embodiment
Embodiment of the present utility model is described with reference to the accompanying drawings.The element of describing in an accompanying drawing of the present utility model or a kind of embodiment and feature can combine with element and feature shown in one or more other accompanying drawing or embodiment.It should be noted that for purposes of clarity, in accompanying drawing and explanation, omitted with the utility model irrelevant, expression and the description of parts known to persons of ordinary skill in the art and processing.
Shown in Figure 1, for according to the artificial mains network's 1 of a kind of embodiment of the utility model structural drawing.
In the present embodiment, artificial mains network 1 for example 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, pre-processing module 10 is for reducing the interference of external AC electrical network, and the undesired signal of equipment under test EUT is coupled to next stage.Interference measurement module 20 has disturbance measurement pattern, can select variety classes undesired signal to measure, for example, can measure L line-hit, N line-hit, common mode interference and differential mode interference.The undesired signal output of output module 30 for interference measurement module 20 is measured.Control module 40 is switched between different interferometry patterns for controlling interference measurement module 20.To be described in more detail below, control module 40 can be passed through button or switch manual manipulation, also can Remote Acquisitioning control signal.Display module 50 shows interference measurement module 20 mode of operation of living in by the such as display device such as bright light or display screen, that is, and and L line interferometry pattern, N line interferometry pattern, common mode interference measurement pattern or differential mode interference measurement pattern.
Referring to 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.Give an example, 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 exemplary implementation of corresponding module is provided, it is contemplated that other equivalent circuit also can be used for realizing the function of corresponding module.
In conjunction with Fig. 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 utility model.Decoupling zero module 11 is for from external AC electrical network access electric power signal, and reduces the electromagnetic interference (EMI) of external power signal.Coupling module 12 is for the electric power signal of isolating exterior AC electrical network, and the undesired signal of equipment under test EUT is coupled to next stage.For example, more than decoupling zero module 11 can reduce 40dB by the interference in AC electrical network 150kHz-30MHz frequency range, the interference that the input electrical signal that makes 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.
Fig. 3 is an exemplary circuit diagram of decoupling zero module 11 shown in Fig. 2.
In Fig. 3, one end of decoupling zero module is connected to the input of AC electrical network, comprise live wire (L) zero line (N) three lines of ground wire (PE), be connected to L that electrical network is corresponding N tri-lines of PE.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) three lines of ground wire (EUT-PE), be connected respectively to L that equipment under test EUT is corresponding N tri-lines of PE.
Fig. 4 is the circuit diagram of an example of coupling module 12 shown in Fig. 2.
In Fig. 4, the undesired signal of equipment under test EUT is coupled to next stage circuit by coupled circuit, simultaneously by the power-frequency voltage signal isolation of 50Hz.One end of this coupled circuit connects EUT port, that is, tri-lines of EUT-L, EUT-N and EUT-PE, the other end is exported to next stage circuit by the equipment under test undesired signal being coupled out and is processed.As shown in Figure 4, " Output_L " is the undesired signal of " EUT-L " line of coupling output, and " Output_N " is the undesired signal of " EUT-N " line of coupling output.
Next, will included interference measurement module 20 in artificial mains network 1 be described.Fig. 5 illustrates the structural drawing of an example of artificial mains network 1 interference measurement module 20.As shown in Figure 5, 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 outputed to measuring equipment, to obtain the common mode interference value of reading or the differential mode interference value of reading.Switch S 1, S2, S3 and S4 receive the control signal from control module 40, and collaborative work selects different interferometry patterns, variety classes undesired signal (interference of L line, the interference of N line, common mode interference or differential mode interference) is outputed 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 EUT-L line undesired signal Output_L and the EUT-N line undesired signal Output_N of prime pre-processing module 10.Switch S 1, S2 and S4 form " L/N line disturbs transmission circuit ", for passing through the different on off operating modes of 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, measure 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 assembly altogether: common mode separation vessel CM Splitter, differential mode separation vessel DM Splitter, resistance R 18 and R19.Be to be understood that, shown in Fig. 6, the electric circuit constitute of differential mode interference extraction unit 25 is only as example altogether, those skilled in the art it is contemplated that other the electric circuit constitutes, go out common mode component CM and differential-mode component DM for the undesired signal separation and Extraction from EUT-L line and EUT-N line.Therefore, differential mode interference extraction unit 25 constitutes " common mode/differential mode interference transmission circuit " with switch S 1, S3 and S4 altogether, their collaborative works, so that common mode interference CM or differential mode interference DM are outputed to rear class output module 30, measure and reading for measuring equipment.
First, on " L/N line disturbs transmission circuit ", by setting aside switch S 1, EUT-L line undesired signal Output_L and EUT-N line undesired signal Output_N are coupled as " TEST_L " and " TEST_N ", then output to the output module 30 of rear class through the combination action of S2 and S4, measure 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 measure and reading, and the terminal of 50 Ω blocked impedance R6 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+ ", " 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 to as output signal REC on the receiver " Receiver " of 50 Ω impedances, finally be read out, the undesired signal on " TEST_N " is connected on the terminal resistance R6 of 50 Ω as output TER.On the other hand, as " OP2+ ", the voltage difference of " OP2-" is+5V that S2 is upper to be dialled; " OP4+ ", when the voltage difference of " OP4-" is 0V, S4 sets aside, and N line circuit is selected, and the receiver " Receiver " that the undesired signal on " TEST_N " outputs to 50 Ω impedances as output signal REC is upper, is finally read out; Undesired signal on " TEST_L " is connected on the terminal resistance R6 of 50 Ω as output TER.
Upper at " common mode/differential mode interference transmission circuit ", as illustrated in Figures 5 and 6, by push aside and close S1, EUT-L line undesired signal Output_L and EUT-N line undesired signal Output_N are coupled as " SEL_L " and " SEL_N ".Then, obtain the common mode component of undesired signal through common mode separation vessel CM Splitter, and obtain the differential-mode component of undesired signal through differential mode separation vessel DM Splitter." OP3+ ", " OP3 "-be the 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+ ", the voltage difference of " OP4-" is+when 5V, S4 is upper to be dialled, common mode pattern is selected, common mode interference component " CM " is output to as output signal REC on the receiver " Receiver " of 50 Ω impedances, common mode component is read out, and differential mode interference component " DM " is output in the resistance R 6 of 50 Ω impedances as output TER.On the other hand, as " OP3+ ", the voltage difference of " OP3 " is+when 5V, S3 is upper to be dialled; " OP4+ ", the voltage difference of " OP4-" is+when 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 that goes 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 disturbs transmission circuit " combined and seen with " common mode/differential mode interference transmission circuit ", by the combination action of four double-point double-throw switch S1, S2, S3 and S4, realize the selection of different test patterns on circuit, outputed to measuring equipment with the undesired signal that realizes equipment under test EUT by selected test pattern.As mentioned above, " Output_L ", " Output_N " are EUT-L line undesired signal and the EUT-N line undesired signals of exporting from the coupling module 12 of prime.Combination by the control signal from control module 40 " OPX+ ", " OPX-" (X is 1,2,3,4) gauge tap S1, S2, S3, S4 moves to select different interferometry patterns.Particularly, as OPX+ ", voltage difference between " OPX-" is+when 5V, in respective switch, dial, when voltage difference is 0V, respective switch is set aside.Therefore, dial S2 when S1 is upper, S3, when S4 all sets aside, L line disturbs selected, it is upper that undesired signal on " TEST_L " is output to the receiver " Receiver " of 50 Ω impedances, be finally read out, and undesired signal on " TEST_N " is connected on the terminal resistance R6 of 50 Ω; Work as S1, S2, S3 is upper dialling all, 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 undesired signal on " TEST_L " is connected on the middle terminal resistance R6 of 50 Ω.Work as S1, S2, S3 all sets aside, and S4 is upper while dialling, and common mode circuit is selected, and it is upper that the undesired signal on " CM " is output to the receiver " Receiver " of 50 Ω impedances, be finally read out, and undesired signal on " DM " is connected on the middle terminal resistance R6 of 50 Ω; When S1 sets aside, S2, S3, S4 is all when upper dialling, and differential mode circuit is selected, and it is upper that the undesired signal on " DM " is output to the receiver " Receiver " of 50 Ω impedances, be finally read out, and undesired signal on " CM " is connected on the middle terminal resistance R6 of 50 Ω.Specifically referring to Fig. 6.
Describe according to the exemplary circuit configuration of artificial mains network's of the present utility model interference measurement module and principle of work with reference to figure 5 and 6 above.Understand in order to be more convenient for, 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 is as just example, and unrestricted scope of the present utility model, 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.
Describe according to the artificial mains network's 1 of the utility model embodiment control system part below with reference to Fig. 8,9,10, that is, and control module 40 and display module 50.
Fig. 8 illustrates the exemplary block diagram of control module 40, and this control module 40 comprises panel control module 41 and control signal generation unit 42.Fig. 9 illustrates the exemplary circuit diagram of panel control module 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 module 41 is as figure.In this example, panel control is to 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.In the time pressing " N_Local " button, N interferometry pattern is selected, and when other buttons are pressed, corresponding measurement pattern is selected.Under normal operation, only allow a button to be pressed.In addition, on panel, also comprise a knob control S6, for selecting input pattern.In the time that knob S6 is left-handed, in panel control model; In the time of knob S6 dextrorotation, 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 processing 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 comprising in interference measurement module 20 shown in Fig. 5, S2, S3, the control signal of S4.And, control signal generation unit 42 is also exported four road pilot lamp control signal N_LED ", " L_LED ", " CM_LED ", " DM_LED "; output to display module 50, so that a lamp in display module 50 is lighted, 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 signals can only You Yi 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 is processed, " OP1+ ", " OP1-" both end voltage is poor is+5V, " OP2+ ", " OP2-" both end voltage is poor is+5V, " OP3+ ", " OP3-" both end voltage is poor is+5V, " OP4+ ", " OP4-" both end voltage are poor is 0V, by switch S 1, S2, S3, S4 combination Action 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 is processed, " OP1+ ", " OP1-" both end voltage are poor is 0V, " OP2+ ", " OP2-" both end voltage are poor is 0V, " OP3+ ", " OP3-" both end voltage are poor is 0V, " OP4+ ", " OP4-" both end voltage is poor is+5V, by switch S 1, S2, S3, S4 combination Action 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 is processed, " OP1+ ", " OP1-" both end voltage are poor is 0V, " OP2+ ", " OP2-" both end voltage are poor is 0V, " OP3+ ", " OP3-" both end voltage are poor is 0V, " OP4+ ", " OP4-" both end voltage is poor is+5V, by switch S 1, S2, S3, S4 combination Action 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 is processed, " OP1+ ", " OP1-" both end voltage are poor is 0V, " OP2+ ", " OP2-" both end voltage is poor is+5V, " OP3+ ", " OP3-" both end voltage is poor is+5V, " OP4+ ", " OP4-" both end voltage is poor is+5V, by switch S 1, S2, S3, S4 combination Action Selection circuit, final differential mode interference measurement pattern is selected, and DM pilot lamp is lit simultaneously.
In the time selecting the knob S6 of control model left-handed on panel, " Select_control " dragged down, and network is in panel control model; In the time of knob S6 dextrorotation, " Select_control " drawn 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 of choosing." N-LED ", " L-LED ", " CM-LED ", " DM-LED " are one of four kinds of measurement patterns of instruction selected pilot lamp.When normal work, only have one of them pilot lamp to be lit.In the time that N-LED lamp is bright, represent to 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, represent to choose common mode interference measurement pattern; When DM-LED lamp is bright, represent to choose differential mode interference measurement pattern.
LOCAL-LED, REMOTE-LED are the display lamps of control model.When normal work, in two pilot lamp, only have wherein one to be lit.In the time that LOCAL-LED lamp is bright, represent current in panel input control pattern; In the time that REMOTE-LED lamp is bright, represent current in remote input control model.
Understand in order to be more convenient for, Figure 12 illustrates on the whole according to the exemplary circuit diagram of artificial mains network's of the present utility model overall system control.Comprising the display module 50 shown in panel control module 41, the control signal generation unit 42 shown in Figure 10 and the Figure 11 shown in Fig. 9.
Adopt artificial mains network of the present utility model, consider differential mode separation function altogether designing and producing in artificial mains network's process, the function that artificial mains network is separated with common mode, differential mode, thereby both can ensure artificial mains network's Performance Characteristics, guarantee the reliable of Conduction Interference measurement result simultaneously, can, for designer provides interference type in the time that Conduction Interference is analyzed in rectification, assist rectification to analyze again.
Above embodiments more of the present utility model are described in detail.As one of ordinary skill in the art can be understood, whole or any steps or the parts of method and apparatus of the present utility model, can be 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 in the situation that understanding content of the present utility model, therefore need not illustrate at this.
In addition, it is evident that, when relating to possible peripheral operation in superincumbent explanation, will use undoubtedly any display device and any input equipment, corresponding interface and the control program that are connected with any computing equipment.Generally speaking, related hardware, software in computing machine, computer system or computer network and realize hardware, firmware, software or their combination of the various operations in preceding method of the present utility model, forms equipment of the present utility model and each building block thereof.
Should emphasize, term " comprises/comprises " existence that refers to feature, key element, step or assembly while use herein, but does not get rid of the existence of one or more further feature, key element, step or assembly or add.
Although described the utility model and advantage thereof in detail, be to be understood that in the case of not exceeding the spirit and scope of the present utility model that limited by appended claim and can carry out various changes, alternative and conversion.And scope of the present utility model is not limited only to the specific embodiment of the described process of instructions, equipment, means, method and step.One of ordinary skilled in the art will readily appreciate that from disclosure of the present utility model, can use and carries out with the essentially identical function of corresponding embodiment described herein or obtain process, equipment, means, method or step result essentially identical with it, that existing and will be developed future according to the utility model.Therefore, appended claim is intended to comprise such process, equipment, means, method or step in their scope.
Claims (20)
1. an artificial mains network, comprising:
Interference measurement module, for receiving the undesired signal of equipment under test, and presses different measuring pattern output disturbance measuring-signal, measures 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, differential mode interference is measured and common mode interference is measured;
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.
2. artificial mains network according to claim 1, wherein, described pre-processing module comprises decoupling zero module and coupling module, described decoupling zero module reduces the electromagnetic interference (EMI) from described AC electrical network;
Described coupling module is coupled to the undesired signal of described equipment under test the described interference measurement module of rear class.
3. artificial mains network according to claim 2, wherein, more than the interference of described external AC electrical network is reduced 40dB by described decoupling zero module.
4. 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.
5. artificial mains network according to claim 1, wherein, comprises L line undesired signal, N line undesired signal, differential mode interference signal and common mode interference signal from the interferometry signal of described interference measurement module output.
6. artificial mains network according to claim 1, wherein, described interference measurement module comprises common differential mode interference extraction unit, for from extract common mode interference component and differential mode interference component from the undesired signal of described equipment under test.
7. artificial mains network according to claim 6, 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 used for extracting described common mode interference component, and described differential mode separation vessel is used for extracting described differential mode interference component.
8. artificial mains network according to claim 1, wherein, described interference measurement module comprises the switches set being made up of multiple switches, for selecting described interference measurement module to be operated in different interferometry patterns.
9. artificial mains network according to claim 6, also comprises the switches set being 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 arrives rear class measuring equipment for the interferometry signal of exporting under disturbance measurement pattern, measures 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 differential mode interference extraction unit, described switch S 3 and S4 altogether differential mode interference signal path altogether in series, for arriving described measuring equipment by common mode interference signal or differential mode interference signal coupling.
10. artificial mains network according to claim 1, wherein, described control module comprises panel control module and control signal generation unit, described panel control module is used 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.
11. artificial mains networks according to claim 10, wherein, described panel control module 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.
12. artificial mains networks according to claim 10, wherein, described panel control module receiving remote steering order, 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 module receives described remote control commands by RS232 port.
14. artificial mains networks according to claim 10, wherein, described panel control module also comprises knob, for selecting the control of this floor plate or Long-distance Control by knob described in left-handed or dextrorotation.
15. artificial mains networks according to claim 10, wherein, the control signal that described control signal generation unit generates for control each switch in the switches set of described interference measurement module upper group or set aside, thereby select different interferometry patterns.
16. artificial mains networks according to claim 1, also comprise display module, for showing the residing interferometry pattern of described interferometry work pattern.
17. artificial mains networks according to claim 16, wherein, described display module comprises four jamming pattern display lamps, shows disturbance measurement pattern by lighting disturbance pattern display lamp.
18. artificial mains networks according to claim 16, wherein, described display module comprises two control model display lamps, shows that by lighting different control model display lamps described control module is the control of this floor plate or Long-distance Control.
19. 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 is outputed to outside measuring equipment.
20. artificial mains networks according to claim 19, wherein, described output module is receiver path.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310641.2U CN204008882U (en) | 2014-06-11 | 2014-06-11 | Artificial mains network |
| TW103218975U TWM500389U (en) | 2014-06-11 | 2014-10-27 | Manual power source network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420310641.2U CN204008882U (en) | 2014-06-11 | 2014-06-11 | Artificial mains network |
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| Publication Number | Publication Date |
|---|---|
| CN204008882U true CN204008882U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420310641.2U Expired - Fee Related CN204008882U (en) | 2014-06-11 | 2014-06-11 | Artificial mains network |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN204008882U (en) |
| TW (1) | TWM500389U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301545A (en) * | 2015-12-05 | 2016-02-03 | 中国航空工业集团公司洛阳电光设备研究所 | Calibration method for electromagnetic compatibility test system |
| CN105334404A (en) * | 2014-06-11 | 2016-02-17 | 中达电子零组件(吴江)有限公司 | Artificial mains network |
| CN113341361A (en) * | 2021-06-04 | 2021-09-03 | 江苏海明医疗器械有限公司 | Electronic equipment rectification device, system and method |
-
2014
- 2014-06-11 CN CN201420310641.2U patent/CN204008882U/en not_active Expired - Fee Related
- 2014-10-27 TW TW103218975U patent/TWM500389U/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105334404A (en) * | 2014-06-11 | 2016-02-17 | 中达电子零组件(吴江)有限公司 | Artificial mains network |
| CN105334404B (en) * | 2014-06-11 | 2018-10-23 | 中达电子零组件(吴江)有限公司 | Artificial mains network |
| CN105301545A (en) * | 2015-12-05 | 2016-02-03 | 中国航空工业集团公司洛阳电光设备研究所 | Calibration method for electromagnetic compatibility test system |
| CN105301545B (en) * | 2015-12-05 | 2018-08-17 | 中国航空工业集团公司洛阳电光设备研究所 | A kind of calibration method of emc testing system |
| CN113341361A (en) * | 2021-06-04 | 2021-09-03 | 江苏海明医疗器械有限公司 | Electronic equipment rectification device, system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| TWM500389U (en) | 2015-05-01 |
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