TWM500389U - Manual power source network - Google Patents

Description

Artificial power network 【0001】

The present invention relates generally to artificial power networks and, more particularly, to an artificial power network with a common differential mode separation function.

【0002】

With the advancement of modern technology, the demand for electronic products is becoming more diverse. To ensure that multiple types of electronic products work together in the same environment, the electromagnetic compatibility of electronic products is becoming more and more prominent. At present, most electronic products require EMC certification before they go on the market. Conducted interference emissions are the primary measurement items for electromagnetic compatibility. In the case of conducted interference emission measurement of electronic products, it is often encountered that the emission value exceeds the corresponding specified limit. In this case, the designer needs to carry out rectification analysis on the product.

[0003]

At present, there are three main methods for conducting interference rectification analysis. The first one is the empirical method. According to the previous experience of solving the problem of conducted interference, the designer formulates some attempts to test the product, and tries, measures, retry, and re-measure. Solving the problem of conducted interference, this method has the advantage of being cost-effective, but it often takes a long time and relies entirely on the experience of the designer. Secondly: by means of the filter method, the designer adds a filter to the product and then measures Observing the improvement, the method has the advantages of easy implementation and low cost of the device, but the filter characteristics of the filter are usually obtained under the 50Ω measurement system, and the impedances of different products are different. In many cases, the filter cannot be expected. Improvement; third: using common differential mode separation equipment, the program has mature common mode differential mode separation equipment on the market, and can quantify the measurement data, the designer can get the interference type according to the measurement result, and then according to the interference type ( Common mode or differential mode) to take the corresponding measures, but the reality of the program Artificial requires two power supply network (AMN), increase testing costs, while the common-mode separation apparatus using difference may result in the overall impedance of the power offset of the web, brings the measurement error.

[0004]

A brief overview of the present invention is given below to provide a basic understanding of certain aspects of the novel. It should be understood that this summary is not an exhaustive overview of the novel. It is not intended to identify key or critical parts of the present invention, nor is it intended to limit the scope of the present invention. Its purpose is to present some concepts in a simplified form as a pre-

[0005]

According to an aspect of the present invention, an artificial power network is provided, comprising: an interference measurement module, configured to receive an interference signal of a device under test, and output different interference measurement signals for measurement devices according to different measurement modes; and a control module, The measurement mode used to control the interference measurement module. For example, the measurement mode of the interference measurement module may include L-line interference measurement, N-line interference measurement, differential mode interference measurement, and common mode interference measurement.

[0006]

According to the novel, the artificial power network has a common differential mode interference separation function, which can ensure the performance characteristics of the artificial power network, ensure the reliable measurement results of the conducted interference, and provide the interference type for the designer to rectify and analyze the conducted interference. To assist in rectification analysis.

[0046]

1‧‧‧ artificial power network
10‧‧‧Pre-processing module
11‧‧‧Decoupling module
12‧‧‧Coupling module
20‧‧‧Interference measurement module
21‧‧‧Switch S1
22‧‧‧Switch S2
23‧‧‧Switch S3
24‧‧‧Switch S4
25‧‧‧Common differential interference extraction unit
30‧‧‧Output module
40‧‧‧Control module
41‧‧‧ Panel Control Unit
42‧‧‧Control signal generation unit
50‧‧‧Display module

【0007】

1 is a block diagram of an artificial power network in accordance with an embodiment of the present invention.
2 is a structural diagram of an example of a pre-processing module of the artificial power network shown in FIG. 1.
3 is a circuit diagram of an example of the decoupling module shown in FIG. 2.
4 is a circuit diagram of an example of the coupling module shown in FIG. 2.
FIG. 5 is a structural diagram of an example of an interference measurement module of the artificial power supply network shown in FIG. 1.
FIG. 6 is a circuit diagram of an example of the interference measurement module shown in FIG. 5.
Figure 7 is a circuit diagram showing an exemplary circuit configuration of a pre-processing module, an interference measuring module, and an output module constituting the artificial power supply network shown in Figure 1.
FIG. 8 shows an exemplary structural diagram of a control module constituting the artificial power supply network shown in FIG. 1.
Fig. 9 is a circuit diagram showing an example of a panel control unit in the control module shown in Fig. 8.
Fig. 10 is a circuit diagram showing an example of a control signal generating unit in the control module shown in Fig. 8.
Figure 11 is a circuit diagram showing an exemplary circuit configuration of a display module constituting the artificial power supply network shown in Figure 1.
12 shows an exemplary circuit diagram of an overall control system of an artificial power network in accordance with an embodiment of the present invention, including the exemplary panel control unit illustrated in FIG. 9, the exemplary control signal generating unit illustrated in FIG. 10, and The exemplary display module shown in FIG.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. The elements and features described in one diagram or embodiment of the present invention may be combined with elements and features illustrated in one or more other figures or embodiments. It should be noted that, for the sake of clarity, representations and descriptions of components and processes that are not related to the present invention and are known to those of ordinary skill in the art are omitted in the drawings and description.

【0009】

Referring to Figure 1, there is shown a block diagram of an artificial power supply network 1 in accordance with an embodiment of the present invention.

[0010]

In the present embodiment, the artificial power network 1 includes, for example, a pre-processing module 10, an interference measurement module 20, an output module 30, a control module 40, and a display module 50. In addition, Figure 1 also shows an external AC grid and an EUT.

[0011]

The pre-processing module 10 is configured to reduce interference of the external AC grid and couple the interference signal of the EUT of the device under test to the next stage. The interference measurement module 20 has different interference measurement modes, and different types of interference signals can be selected for measurement, for example, L line interference, N line interference, common mode interference, and differential mode interference can be measured. The output module 30 is configured to output the interference signal measured by the interference measurement module 20. The control module 40 is configured to control the interference measurement module 20 to switch between different interference measurement modes. As will be described in more detail below, the control module 40 can be manually manipulated by a button or switch, or remotely. The display module 50 displays the operation mode of the interference measurement module 20 by a display device such as a lighting or display screen, that is, an L-line interference measurement mode, an N-line interference measurement mode, a common mode interference measurement mode, or a differential mode interference measurement mode.

[0012]

Referring to FIG. 2, a block diagram showing an example of the pre-processing module 10 of the artificial power source network 1 shown in FIG.

[0013]

In one embodiment, the pre-processing module 10 can include a decoupling module 11 and a coupling module 12. For example, exemplary circuit diagrams of the decoupling module 11 and the coupling module 12 are shown in Figures 3 and 4, respectively. It should be understood by those skilled in the art that all of the circuit diagrams shown in this specification are for exemplary purposes, providing only one exemplary implementation of the corresponding modules, and it is contemplated that other equivalent circuits may be used to implement the functions of the respective modules.

[0014]

The operation of the pre-processing module 10 in the artificial power supply network 1 according to the present invention can be more clearly understood in conjunction with Figures 2-4. The decoupling module 11 is used to access power signals from an external AC grid and to reduce electromagnetic interference from external power signals. The coupling module 12 is used to isolate the power signal of the external AC grid and couple the interference signal of the EUT of the device under test to the next stage. For example, the decoupling module 11 can reduce the interference on the AC grid from 150 kHz to 30 MHz by more than 40 dB, so that the interference on the AC grid 150 kHz to 30 MHz is far less than the interference generated by the input electrical signal of the device under test, thereby ensuring the artificial power network. The interference signal measured by the road is emitted by the input electrical signal of the device under test.

[0015]

FIG. 3 is an exemplary circuit diagram of the decoupling module 11 of FIG. 2.

[0016]

In Figure 3, one end of the decoupling module is connected to the input of the AC grid, including the three lines of Fire (L), Zero (N) and Ground (PE), which are connected to the three lines of L\N\PE corresponding to the grid. The other end of the decoupling module is the EUT port, which is connected to the input electrical signal of the EUT of the device under test, including the three lines of the live line (EUT-L)\zero line (EUT-N)\ground line (EUT-PE), which are respectively connected to the Test the three lines of L\N\PE corresponding to the EUT of the device.

[0017]

4 is a circuit diagram of an example of the coupling module 12 shown in FIG. 2.

[0018]

In FIG. 4, the coupling circuit couples the interference signal of the device under test EUT to the next stage circuit while isolating the 50 Hz power frequency voltage signal. One end of the coupling circuit is connected to the EUT port, that is, three lines of EUT-L, EUT-N and EUT-PE, and the other end outputs the coupled interference signal of the device under test to the next-stage circuit for processing. As shown, "Output_L" is the interference signal of the "EUT-L" line of the coupled output, and "Output_N" is the interference signal of the "EUT-N" line of the coupled output.

[0019]

Next, the interference measurement module 20 included in the artificial power supply network 1 will be described. FIG. 5 shows a block diagram of an example of the interference measurement module 20 of the artificial power supply network 1. As shown, in the present example, the interference measurement module 20 includes a common differential mode interference extraction unit 25 and four switches (ie, switch S1 21, switch S2 22, switch S3 23, and switch S4 24). The common differential mode interference extracting unit 25 is configured to separate and extract the common mode component CM and the differential mode component DM of the interference signal on the EUT-L line and the EUT-N line, and output the common mode component or the differential mode component to the measuring device as needed. To obtain common mode interference readings or differential mode interference readings. The switch S1, the switch S2, the switch S3 and the switch S4 receive the control signals from the control module 40, and cooperate to select different interference measurement modes, and different types of interference signals (L line interference, N line interference, common mode interference or differential mode). Interference) output to the measuring device.

[0020]

FIG. 6 shows an exemplary circuit diagram of the interference measurement module 20 shown in FIG.

[0021]

In the circuit shown in Fig. 6, the EUT-L line interference signal Output_L and the EUT-N line interference signal Output_N from the pre-stage pre-processing module 10 are input to the switch S1. The switch S1, the switch S2 and the switch S4 constitute an "L/N line interference transmission circuit" for using an EUT-L line interference signal or an EUT-N line interference signal through different on-off states of the switch S1, the switch S2 and the switch S4. It is coupled to the post output module 30 for measurement and reading by the measuring device. An exemplary circuit of output module 30 will be described later with reference to FIG.

[0022]

In addition, as shown in FIG. 6, in one example, the common mode interference extraction unit 25 may include the following components: a common mode separator CM Splitter, a differential mode separator DM Splitter, resistors R18 and R19. It should be understood that the circuit composition of the common mode interference extraction unit 25 shown in FIG. 6 is merely an example, and those skilled in the art can envisage other circuit components for separating and extracting interference signals on the EUT-L line and the EUT-N line. The common mode component CM and the differential mode component DM are derived. Therefore, the common differential mode interference extracting unit 25 is combined with the switch S1, the switch S3 and the switch S4 to form a "common mode/differential mode interference transmission circuit", which cooperate to output the common mode interference CM or the differential mode interference DM to the subsequent stage. The module 30 is output for measurement and reading by the measuring device.

[0023]

First, on the "L/N line interference transmission circuit", the EUT-L line interference signal Output_L and the EUT-N line interference signal Output_N are coupled to "TEST_L" and "TEST_N" through the down switch S1, and then pass the switch S2. The combined action with switch S4 is output to output module 30 of the subsequent stage for measurement and reading by the measuring device. As shown in Fig. 7, one of the L-line circuit and the N-line circuit selects a receiver "Receiver" with a 50Ω impedance for measurement and reading, and the other channel can only select a terminal with a 50Ω fixed impedance R6. As shown in FIG. 6, "OP2+", "OP2-" is a control signal for the switch S2 from the control module 40 (described below), "OP4+", "OP4-" is from the control module 40 for the switch S4 control signal. When the voltage difference between "OP2+" and "OP2-" is 0V, switch S2 is dialed; when the voltage difference between "OP4+" and "OP4-" is 0V, switch S4 is dialed and the L line circuit is selected, "TEST_L The upper interference signal is output as an output signal REC to the receiver "Receiver" with a 50Ω impedance, and finally read out. The interference signal on "TEST_N" is connected as an output TER to the 50Ω termination resistor R6. On the other hand, when "OP2+", "OP2-" voltage difference is +5V, switch S2 is dialed; "OP4+", "OP4-" voltage difference is 0V, switch S4 is dialed, N line circuit is selected The interference signal on "TEST_N" is output as an output signal REC to the receiver "Receiver" of the 50Ω impedance, and finally read out; the interference signal on "TEST_L" is connected as an output TER to the 50Ω termination resistor R6.

[0024]

On the "common mode/differential mode interference transmission circuit", as shown in FIGS. 5 and 6, the EUT-L line interference signal Output_L and the EUT-N line interference signal Output_N are coupled to "SEL_L" and "" by the up-drag switch S1. SEL_N". Then, the common mode component of the interference signal is obtained via the common mode separator CM Splitter, and the differential mode component of the interference signal is obtained by the differential mode separator DM Splitter. "OP3+", "OP3" - is the control signal for the switch S3 from the control module 40, "OP4+", "OP4-" is the control signal for the switch S4 from the control module 40. When the voltage difference between "OP3+" and "OP3" is 0V, switch S3 is dialed; when the voltage difference between "OP4+" and "OP4-" is +5V, switch S4 is dialed, common mode is selected, common mode The interference component "CM" is output as an output signal REC to a receiver "Receiver" of 50 Ω impedance, the common mode component is read out, and the differential mode interference component "DM" is output as an output TER to a resistor R6 of 50 Ω impedance. On the other hand, when the voltage difference between "OP3+" and "OP3" is +5V, the switch S3 is dialed; when the voltage difference between "OP4+" and "OP4-" is +5V, the switch S4 is dialed, and the differential mode is When selected, the differential mode interference component "DM" is output to the receiver "Receiver" of the 50 Ω impedance, the differential mode component is read out, and the common mode interference component "CM" is output to the 50 Ω termination resistor R6.

[0025]

In the circuit shown in Fig. 6, the common mode separator CM_Splitter is used to separate the common mode component of the interference signal. In the frequency range of 150 kHz to 30 MHz, the insertion loss is less than 1 dB, and the common mode differential mode rejection ratio is greater than 20 dB; differential mode separation The DM_Splitter separates the differential mode component of the interference signal. In the frequency unit of 150 kHz to 30 MHz, the insertion loss is less than 1 dB, and the differential mode common mode rejection ratio is greater than 20 dB.

[0026]

Combining the "L/N line interference transmission circuit" with the "common mode/differential mode interference transmission circuit", the circuit is realized by the combined action of four double-pole double-throw switch S1, switch S2, switch S3 and switch S4. The selection of different test modes is performed to realize that the interference signal of the EUT of the device under test is output to the measurement device through the selected test mode. As described above, "Output_L" and "Output_N" are EUT-L line interference signals and EUT-N line interference signals output from the coupling module 12 of the preceding stage. Different interference measurement modes are selected by controlling the combined operation of the switch S1, the switch S2, the switch S3, and the switch S4 by the control signals "OPX+" and "OPX-" (X is 1, 2, 3, 4) from the control module 40. Specifically, when the voltage difference between OPX+” and “OPX-” is +5V, the corresponding switch is dialed, and the voltage difference is 0V, the corresponding switch is dialed. Therefore, when the switch S1 is dialed, the switch S2, the switch When S3 and switch S4 are all dialed, the L line interference is selected, and the interference signal on “TEST _L” is output to the receiver “Receiver” with 50Ω impedance, and finally read out, and the interference signal on “TEST_N”. It is connected to the 50Ω terminal resistor R6; when the switch S1, the switch S2, the switch S3 are dialed up, the switch S4 is dialed, the N line is selected, and the interference signal on the “TEST _N” is output to the 50Ω impedance receiving. On the machine "Receiver", it is finally read out, and the interference signal on "TEST_L" is connected to the 50Ω medium terminating resistor R6. When the switch S1, the switch S2, the switch S3 are all dialed, and the switch S4 is dialed, The modulo line is selected, the interference signal on the "CM" is output to the receiver "Receiver" of the 50 Ω impedance, and finally read out, and the interference signal on the "DM" is connected to the 50 Ω middle terminating resistor R6; When the switch S1 is dialed, the switch S2, the switch S3, and the switch S4 are all dialed up, the differential mode line When selected, the interference signal on the "DM" is output to the receiver "Receiver" with a 50Ω impedance, and finally read out, and the interference signal on the "CM" is connected to the 50Ω mid-terminal resistor R6. Figure 6.

[0027]

An exemplary circuit configuration and operational principle of an interference measurement module of an artificial power supply network in accordance with the present invention is described above with reference to FIGS. 5 and 6. For easier understanding, FIG. 7 shows a circuit diagram of an exemplary circuit configuration of the pre-processing module 10, the interference measurement module 20, and the output module 30 in the artificial power supply network 1 as a whole. The circuit diagrams are by way of example only and not limiting the scope of the present invention, and those skilled in the art will readily appreciate other circuit implementations for implementing the functions of the pre-processing module 10, the interference measurement module 20, and the output module 30.

[0028]

The control system portion of the artificial power supply network 1 according to the embodiment of the present invention, that is, the control module 40 and the display module 50 will be described below with reference to FIGS. 8, 9, and 10.

[0029]

FIG. 8 shows an exemplary structural diagram of a control module 40 including a panel control unit 41 and a control signal generating unit 42. FIG. 9 shows an exemplary circuit diagram of the panel control unit 41, and FIG. 10 shows an exemplary circuit diagram of the control signal generating unit 42.

[0030]

As shown in FIG. 9, in one example, the circuit of the panel control unit 41 is as shown. In this example, panel control controls the interference measurement mode selection through panel buttons on the artificial power network. The four buttons "N_Local", "L_Local", "CM_Local", and "DM_Local" on the panel correspond to the L-line interference measurement mode, the N-line interference measurement mode, the common mode component measurement mode, and the differential mode component measurement mode, respectively. When the “N_Local” button is pressed, the N interference measurement mode is selected, and when other buttons are pressed, the corresponding measurement mode is selected. Only one button is allowed to be pressed under normal working conditions. In addition, the panel also includes a knob control S6 for selecting the input mode. When the knob S6 is left-handed, it is in the panel control mode; when the knob S6 is right-handed, it is in the remote control mode.

[0031]

An exemplary circuit diagram of the control signal generating unit 42 is shown in FIG. In this example, the four-way panel control buttons "N_Local", "L_Local", "CM_Local", "DM_Local" input signals, four-way remote control selected level signals "N_REMOTE", "L_REMOTE", "CM_REMOTE", "DM_REMOTE" and the control mode selection signal "Select_control" as inputs, through the processing of the control signal generating unit 42, output four sets of voltages "OP1+, OP1-", "OP2+, OP2-", "OP3+, OP3-", "OP4+ And OP4-" respectively serve as control signals for the switch S1, the switch S2, the switch S3, and the switch S4 included in the interference measuring module 20 shown in FIG. Moreover, the control signal generating unit 42 further outputs four indicator light control signals N_LED", "L_LED", "CM_LED", "DM_LED", and outputs to the display module 50 to light one of the display modules 50 for use. The selected interference measurement mode is displayed, wherein the "N_Local", "L_Local", "CM_Local", "DM_Local" and "N_REMOTE", "L_REMOTE", "CM_REMOTE", "DM_REMOTE" eight-way input control signals can only have one way Low level input.

[0032]

When one of "N_Local" or "N_REMOTE" is low level, the other input signals of the control signal generating unit 42 are at a high level, and after being processed by the control signal generating unit 42, the voltage difference between "OP1+" and "OP1-" For +5V, the voltage difference between "OP2+" and "OP2-" is +5V, the voltage difference between "OP3+" and "OP3-" is +5V, and the voltage difference between "OP4+" and "OP4-" is 0V. The operation selection circuit is combined by the switch S1, the switch S2, the switch S3, and the switch S4, and finally the N-line interference measurement mode is selected, and the N-line indicator light is illuminated.

[0033]

When one of "L_Local" or "L_REMOTE" is low level, after the control signal generating unit 42 processes, the voltage difference between "OP1+" and "OP1-" is 0V, and the voltage across "OP2+" and "OP2-" The difference is 0V, the voltage difference between “OP3+” and “OP3-” is 0V, and the voltage difference between “OP4+” and “OP4-” is +5V, which is selected by the combination of switch S1, switch S2, switch S3 and switch S4. In the circuit, the final L-line interference measurement mode is selected and the L-line indicator is illuminated.

[0034]

When one of "CM_Local" or "CM_REMOTE" is low, after the control signal generating unit 42 processes, the voltage difference between "OP1+" and "OP1-" is 0V, and the voltages of "OP2+" and "OP2-" The difference is 0V, the voltage difference between “OP3+” and “OP3-” is 0V, and the voltage difference between “OP4+” and “OP4-” is +5V, which is selected by the combination of switch S1, switch S2, switch S3 and switch S4. In the circuit, the final common mode interference measurement mode is selected and the CM indicator is illuminated.

[0035]

When one of "DM_Local" or "DM_REMOTE" is low, after the control signal generating unit 42 processes, the voltage difference between "OP1+" and "OP1-" is 0V, and the voltages of "OP2+" and "OP2-" The difference is +5V, the voltage difference between "OP3+" and "OP3-" is +5V, and the voltage difference between "OP4+" and "OP4-" is +5V, which is combined by switch S1, switch S2, switch S3 and switch S4. The action selection circuit, the final differential mode interference measurement mode is selected, and the DM indicator is illuminated.

[0036]

When the control knob K6 is left-handed on the panel, "Select_control" is pulled low, the network is in panel control mode; when knob S6 is rotated right, "Select_control" is pulled high and the network is in remote control mode.

[0037]

FIG. 11 shows an exemplary circuit diagram of the display module 50.

[0038]

In this example, display module 50 is used to display the selected interference measurement mode. "N­-LED", "L-LED", "CM-LED", "DM-LED" are indicators indicating that one of the four measurement modes is selected. Only one of the indicators is lit during normal operation. When the N-LED lamp is on, it indicates that the N-line interference measurement mode is selected; when the L-LED lamp is on, it indicates that the L-line interference measurement mode is selected; when the CM-LED is on, it indicates that the common mode interference measurement mode is selected; when the DM-LED is on Indicates that the differential mode interference measurement mode is selected.

[0039]

LOCAL-LED and REMOTE-LED are display lights for control mode. Only one of the two indicators is illuminated during normal operation. When the LOCAL-LED is on, it indicates that it is currently in the panel input control mode; when the REMOTE-LED is on, it indicates that it is currently in the remote input control mode.

[0040]

For easier understanding, FIG. 12 generally illustrates an exemplary circuit diagram of an overall control system for an artificial power network in accordance with the present invention. The panel control unit 41 shown in FIG. 9, the control signal generating unit 42 shown in FIG. 10, and the display module 50 shown in FIG. 11 are included.

[0041]

By adopting the artificial power network of the present invention, the common mode separation function is considered in the process of designing and manufacturing the artificial power network, so that the artificial power network has the functions of common mode and differential mode separation, thereby ensuring the artificial power network. The performance characteristics, while ensuring the reliability of the conducted interference measurement results, can also provide the type of interference for the designer to rectify and analyze the conducted interference, and assist in the rectification analysis.

[0042]

Some embodiments of the present invention have been described in detail above. As can be appreciated by one of ordinary skill in the art, all or any of the steps or components of the method and apparatus of the present invention can be in the network of any computing device (including a processor, storage medium, etc.) or computing device. The firmware, software, or a combination thereof is implemented by those skilled in the art using their basic programming skills while understanding the contents of the present invention, and thus need not be specifically described herein.

[0043]

Moreover, it will be apparent that any display device and any input device, corresponding interface, and control program associated with any computing device will be utilized when the above description refers to possible external operations. In summary, the hardware, software, and hardware, firmware, software, or combinations thereof that implement various operations in the computer, computer system, or computer network, constitute the apparatus of the present invention and its various components.

[0044]

It should be emphasized that the term "comprising" or "comprising" is used to mean the presence of a feature, element, step or component, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0045]

While the invention has been described with reference to the embodiments of the present invention Further, the scope of the novel is not limited to the specific embodiments of the processes, devices, means, methods and steps described in the specification. It will be readily apparent to those skilled in the art from this disclosure that the present invention may be used in accordance with the present invention to perform substantially the same functions as the corresponding embodiments described herein or to obtain substantially the same results. The process, equipment, means, method or steps of development. Therefore, the scope of the appended claims is intended to cover such a process, apparatus, means, method or steps.

1‧‧‧ artificial power network

10‧‧‧Pre-processing module

20‧‧‧Interference measurement module

30‧‧‧Output module

40‧‧‧Control module

50‧‧‧Display module

Claims (21)

[Item 1] An artificial power network that includes:
The interference measurement module is configured to receive an interference signal of the device under test, and output different interference measurement signals according to different measurement modes for measurement by the measurement device;
a control module for controlling a measurement mode of the interference measurement module,
The measurement mode of the interference measurement module includes L line interference measurement, N line interference measurement, differential mode interference measurement and common mode interference measurement. [Item 2] According to the artificial power network described in claim 1, the method further includes:
a pre-processing module that receives a power signal from an external AC grid, reduces electromagnetic interference of the AC grid, and couples the interference signal of the device under test to the interference measurement module of the subsequent stage. [Item 3] The artificial power supply network of claim 2, wherein the pre-processing module comprises a decoupling module and a coupling module, the decoupling module reducing electromagnetic interference from the AC power grid;
The coupling module couples the interference signal of the device under test to the interference measurement module of the subsequent stage. [Item 4] The artificial power network according to claim 3, wherein the decoupling module reduces the interference of the external AC grid by more than 40 dB. [Item 5] The artificial power network according to claim 1, wherein the interference signal of the device under test includes an L line interference signal and an N line interference signal. [Item 6] The artificial power network according to claim 1, wherein the interference measurement signal outputted from the interference measurement module comprises an L line interference signal, an N line interference signal, a differential mode interference signal, and a common mode interference signal. [Item 7] The artificial power supply network according to claim 1, wherein the interference measurement module comprises a common differential mode interference extraction unit, configured to extract a common mode interference component and a differential mode from the interference signal from the device under test. Interference component. [Item 8] The artificial power supply network according to claim 7, wherein the common mode interference extraction unit comprises a common mode separator and a differential mode separator, wherein the common mode separator is configured to extract the common mode interference component, the difference A mode separator is used to extract the differential mode interference component. [Item 9] The artificial power network according to claim 1, wherein the interference measurement module comprises a switch group consisting of a plurality of switches for selecting the interference measurement module to operate in different interference measurement modes. [Item 10] The artificial power network according to claim 7 of the patent application scope further includes a switch group consisting of four switches for selecting the interference measurement module to operate in different interference measurement modes, the switch group comprising a switch S1 and a switch S2 a switch S3, the switch S4, wherein the switch S1 is configured to receive an interference signal from the device under test;
The switch S4 is configured to output interference measurement signals in different interference measurement modes to the subsequent measurement device for measurement and reading by the measurement device;
The switch S1, the switch S2, the switch S4 are connected in series to form an L/N line interference signal path for coupling an L line interference signal or an N line interference signal to the measuring device; and the switch S1, the common differential mode interference extraction The unit, the switch S3 and the switch S4 are connected in series to form a common differential mode interference signal path for coupling a common mode interference signal or a differential mode interference signal to the measuring device. [Item 11] The artificial power network according to claim 1, wherein the control module comprises a panel control unit and a control signal generating unit, configured to receive a control command from a local panel or a remote, and indicate the control The signal generation unit generates a control signal for controlling an interference measurement mode of the interference measurement module. [Item 12] According to the artificial power network of claim 11, wherein the panel control unit includes four buttons on the device panel for selecting an L-line interference measurement mode, an N-line interference measurement mode, and a common mode interference measurement. Mode and differential mode interference measurement mode. [Item 13] According to the artificial power network of claim 11, wherein the panel control unit receives a remote control command to select an L line interference measurement mode, an N line interference measurement mode, a common mode interference measurement mode, and a differential mode interference measurement. mode. [Item 14] The artificial power network of claim 12, wherein the panel control unit receives the remote control command through the RS232 port. [Item 15] The artificial power network of claim 11, wherein the panel control unit further comprises a knob for selecting local panel control or remote control by turning the knob left or right. [Item 16] The artificial power network of claim 11, wherein the control signal generated by the control signal generating unit is used to control up or down of each switch in the switch group in the interference measuring module, thereby Choose a different interference measurement mode. [Item 17] The artificial power network according to claim 1, further comprising a display module for displaying an interference measurement mode in the interference measurement mode operation. [Item 18] The artificial power network according to claim 17, wherein the display module comprises four interference mode display lights, and different interference measurement modes are displayed by lighting different interference mode display lights. [Item 19] The artificial power network according to claim 17, wherein the display module comprises two control mode display lights, and the different control mode display lights are illuminated to indicate whether the control module is local panel control or remote control. [Item 20] The artificial power network according to claim 1, further comprising an output module, the output module being located at a subsequent stage of the interference measurement module for outputting the interference measurement signal to an external measurement device. [Item 21] The artificial power network of claim 20, wherein the output module is a receiver path.