CN113541735A - Transmission performance testing method, device, equipment and medium for power modem - Google Patents
Transmission performance testing method, device, equipment and medium for power modem Download PDFInfo
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- CN113541735A CN113541735A CN202010284518.8A CN202010284518A CN113541735A CN 113541735 A CN113541735 A CN 113541735A CN 202010284518 A CN202010284518 A CN 202010284518A CN 113541735 A CN113541735 A CN 113541735A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
- H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
- H04M11/062—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using different frequency bands for speech and other data
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Abstract
The invention discloses a method, a device, equipment and a medium for testing transmission performance of a power modem. The device includes: the first coupling module is used for acquiring a test signal sent by a first power modem, coupling the test signal into a second three-phase power transmission line from a first three-phase power transmission line and sending the test signal to the second coupling module; the second coupling module is used for receiving the test signal, coupling the test signal into a third three-phase power transmission line from a second three-phase power transmission line and sending the test signal to a second power modem; the performance analysis module is used for sending a test signal to the first power modem; and the power modem is also used for determining the transmission performance between the first power modem and the second power modem according to the performance parameters of the test signal sent by the power modem and the performance parameters of the test signal received by the power modem. According to the scheme provided by the embodiment of the invention, the applicability of the transmission performance test of the power modem can be improved.
Description
Technical Field
The invention relates to the field of communication, in particular to a method, a device, equipment and a medium for testing transmission performance of a power modem.
Background
The modem for power line communication is a common name of a modem for broadband internet access through a power line. The Modem uses existing power lines and sockets in a home or office to form a network to connect computers, Asymmetric Digital Subscriber Line (ADSL) modems, set-top boxes, audio equipment, monitoring equipment, and other intelligent electrical equipment to transmit data, voice, and video. The system has the characteristic of plug and play, and can transmit digital signals of an Interconnection Protocol (IP) between networks through a common household power line.
At present, the electric cat test scheme is only suitable for electric cats with two-line (fire, zero and two-line) transmission, and the measurement scheme has certain limitation.
Disclosure of Invention
The method, the device, the equipment and the medium for testing the transmission performance of the modem improve the applicability of the transmission performance test of the modem.
In a first aspect, a transmission performance testing apparatus for a power modem is provided, including: the first coupling module is used for acquiring a test signal sent by the first power modem, coupling the test signal into the second three-phase power transmission line from the first three-phase power transmission line, and sending the test signal to the second coupling module through the second three-phase power transmission line; the second coupling module is connected with the second power modem through a third three-phase power transmission line and used for receiving the test signal, coupling the test signal into the third three-phase power transmission line from the second three-phase power transmission line and sending the test signal to the second power modem through the third three-phase power transmission line; the performance analysis module is in communication connection with the first power modem and the second power modem respectively and is used for sending a test signal to the first power modem so that the first power modem can output the test signal to the first coupling module; receiving a test signal returned by the second power modem; and the power modem is also used for determining the transmission performance between the first power modem and the second power modem according to the performance parameters of the test signal sent by the power modem and the performance parameters of the test signal received by the power modem.
In an alternative embodiment, the apparatus further comprises: the interference signal generation module is connected with the shunt module and used for sending the generated interference signal to the shunt module; and the shunt module is arranged between the first coupling module and the second coupling module and is used for coupling the interference signal to the test signal output by the first coupling module and transmitting the test signal coupled with the interference signal to the second coupling module.
In an alternative embodiment, the apparatus further comprises: and the attenuation module is arranged between the first coupling module and the second coupling module and used for attenuating the test signal output by the first coupling module and transmitting the attenuated test signal to the second coupling module.
In an alternative embodiment, the apparatus further comprises:
and the signal isolation module is respectively connected with the first coupling module and the second coupling module and used for isolating low-frequency signals in electric energy signals provided by an external power supply, supplying power to the first power modem through the first coupling module by utilizing the electric energy signals isolating the low-frequency signals, and supplying power to the second power modem through the second coupling module by utilizing the electric energy signals isolating the low-frequency signals.
In an optional implementation manner, the first coupling module specifically includes: the first filtering unit is used for receiving a target electric signal which is sent by the first power modem and contains a test signal, filtering out the test signal from the target electric signal and transmitting the filtered test signal to the first coupling unit; the first filtering unit is also used for providing power supply electric energy transmitted by an external power supply through the signal isolation module to the first power modem; and one end of the first coupling unit is also connected with the signal isolation module, the other end of the first coupling unit is connected with the second coupling module through the second three-phase power transmission line, and the first coupling unit is used for coupling the filtered test signal to the second three-phase power transmission line and transmitting the filtered test signal to the second coupling module through the second three-phase power transmission line.
In an alternative embodiment, the first filtering unit comprises: the first fire wire port is connected with one end of the first filtering subunit through a first fire wire, and is also connected with a first power line modem through a fire wire in the first three-phase power transmission line; the other end of the first filtering subunit is connected with the signal isolation module through a second live wire port and a live wire of the fourth three-phase power transmission line, and the other end of the first filtering subunit is also connected with the first coupling unit through the second live wire port and a second live wire; the first ground wire port is connected with one end of the second filtering subunit through a first ground wire, and the first ground wire port is also connected with the first power line modem through a ground wire in the first three-phase power transmission line; the other end of the second filtering subunit is connected with the signal isolation module through a second ground port and a ground wire of the fourth three-phase power transmission line, and the other end of the second filtering subunit is also connected with the first coupling unit through a second ground port and a second ground wire; the first zero line port is connected with one end of the third filter subunit through a first zero line, and is also connected with the first power line modem through a zero line in the first three-phase power transmission line; the other end of the third filtering subunit is connected with the signal isolation module through a second zero line port and a zero line of a fourth three-phase power transmission line, and the other end of the third filtering subunit is also connected with the first coupling unit through the second zero line port and the second zero line; one end of the fourth filtering subunit is connected with the first live wire; one end of the fifth filtering subunit is connected with the first ground wire; one end of the sixth filtering subunit is connected with the first zero line; wherein the other end of the fourth filtering subunit, the other end of the fifth filtering subunit and the other end of the sixth filtering subunit are connected to each other.
In an alternative embodiment, the first coupling unit comprises: one end of the first isolation subunit is connected with the second fire wire port through a second fire wire, and the other end of the first isolation subunit is connected with the third fire wire port through a second fire wire; one end of the second isolation subunit is connected with a second ground port through a second ground wire, and the other end of the second isolation subunit is connected with a third ground port through a second ground wire; one end of the third isolation subunit is connected with the second zero line port through a second zero line, and the other end of the third isolation subunit is connected with the third zero line port through the second zero line; one end of the first resistor subunit is connected to the second live wire; one end of the second resistor subunit is connected to a second ground wire; one end of the third resistor subunit is connected to the second zero line; the other end of the first resistor subunit, the other end of the second resistor subunit and the other end of the third resistor subunit are all grounded.
In an optional embodiment, the first three-phase power transmission line and the third three-phase power transmission line are power lines, and the second three-phase power transmission line is a three-phase radio frequency coaxial cable.
In a second aspect, a transmission performance testing method for a modem is provided, which is applied to the transmission performance testing apparatus for a modem provided in the first aspect, and includes: the performance analysis module sends a test signal to the first power cat so that the first power cat can output the test signal to the first coupling module; the first coupling module receives a test signal sent by the first power modem and sends the test signal to the second coupling module; the second coupling module receives the test signal and sends the test signal to the second power modem, so that the second power modem sends the test signal to the performance analysis module; the performance analysis module determines the transmission performance between the first power modem and the second power modem according to the performance parameters of the test signal sent by the performance analysis module and the performance parameters of the test signal received by the performance analysis module.
In an optional implementation manner, the apparatus further includes an attenuation module disposed between the first coupling module and the second coupling module, and the test signal sent to the second coupling module is a signal attenuated by the attenuation module.
In an optional implementation manner, the apparatus further includes a splitting module disposed between the first coupling module and the second coupling module, and an interference signal generating module connected to the splitting module, where the test signal sent to the second coupling module is obtained by coupling a test signal sent to the first coupling module by the splitting module and an interference signal generated by the interference signal generating module.
In a third aspect, there is provided a transmission performance testing apparatus for a power modem, comprising: a memory for storing a program;
a processor, configured to run the program stored in the memory to execute the transmission performance testing method for the modem according to the first aspect or any optional implementation manner of the first aspect.
In a fourth aspect, a computer storage medium is provided, on which computer program instructions are stored, and the computer program instructions, when executed by a processor, implement the transmission performance testing method for the power modem according to the first aspect or any optional implementation manner of the first aspect. .
According to the device, the method, the equipment and the medium for testing the transmission performance of the modem, the first coupling module in the device for testing the transmission performance of the modem can receive the test signal of the first modem through the first three-phase transmission line and couple the received test signal into the three-phase transmission line. The second coupling module can receive the test signal through the second three-phase power transmission line, couple the test signal into the third three-phase power transmission line, and then send the test signal to the second power modem through the third three-phase power transmission line. The power modem with two-wire transmission can carry out transmission performance test through a two-phase transmission line in the three-phase transmission line, and the power modem with three-wire transmission can carry out transmission performance test through a three-phase transmission line in the three-phase transmission line.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a transmission performance testing device for a power modem according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an exemplary first coupling module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another transmission performance testing apparatus according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another transmission performance testing apparatus according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of an exemplary transmission performance testing apparatus according to an embodiment of the present invention;
fig. 6 is a schematic flow chart illustrating a transmission performance test method of a power cat according to an embodiment of the present invention;
fig. 7 is a structural diagram of an exemplary hardware architecture of a transmission performance testing device for a power modem according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The embodiment of the invention provides a method, a device, equipment and a medium for testing the transmission performance of a power modem, which can be used for measuring the transmission performance between two power modems belonging to the same power signal network. Specifically, the performance analysis module may send a test signal to the first power modem, and the test signal is transmitted to the second power modem sequentially through the first coupling module, the second three-phase power transmission line, and the second coupling module. And the second power modem returns the received test signal to the performance analysis module. The performance analysis module may determine transmission performance between the two power cats based on performance parameters of the transmitted and received test signals.
For better understanding of the present invention, the following describes a transmission performance testing method, device, apparatus and medium for a power modem according to embodiments of the present invention in detail with reference to the accompanying drawings, and it should be noted that these embodiments are not intended to limit the scope of the present disclosure.
Fig. 1 is a schematic structural diagram of a transmission performance testing apparatus for a power modem according to an embodiment of the present invention. As shown in fig. 1, the transmission performance testing apparatus 10 of the modem in the present embodiment includes a first coupling module 11, a second coupling module 12, and a performance analysis module 13.
The following sections of the present invention will specifically describe the specific components of the transmission performance testing apparatus 10 for an electric cat.
First, a description is given below of a specific connection relationship and a function of the first coupling module 11.
One end of the first coupling module 11 is connected with a first power modem P1 through a first three-phase power transmission line a 1. The other end of the first coupling module 11 is connected with the second coupling module 12 through a second three-phase transmission line a 2.
Wherein the three solid lines between the first coupling module 11 and the first power cat in fig. 1 represent the first three-phase transmission line a 1. The three lines of the first three-phase transmission line A1 are respectively a live line, a zero line and a ground line. In particular, the first three-phase transmission line a1 may be implemented as a power line.
Wherein three dashed lines between the first coupling module 11 and the first coupling module 12 in fig. 1 represent the second three-phase transmission line a 2. The three dotted lines of the second three-phase transmission line A2 are respectively a live line, a zero line and a ground line. In one embodiment, considering that the first coupling module 11 and the second coupling module 12 are passive devices, the second phase transmission line a2 may be embodied as a radio frequency coaxial cable.
The first coupling module 11 has a coupling function. Specifically, the first coupling module 11 obtains a test signal sent by the first power modem P1, couples the test signal into the second three-phase power transmission line a2 through the first three-phase power transmission line a1, and sends the test signal to the second coupling module 12 through the second three-phase power transmission line a 2.
Furthermore, in some embodiments, since the first power cat P1 may not send the test signal directly to the first coupling module 11, but instead sends the target electrical signal containing the test signal to the first coupling module 11. The first coupling module 11 also needs to have the function of filtering out the test signal from the target electrical signal. In one embodiment, the test signal is a low frequency signal, such as a low frequency signal between 0 and 100 MHz. In one embodiment, the target electrical signal is a high-voltage signal, and the filtered test signal is a low-voltage signal, and in this case, the first coupling module 11 further has a function of converting the high-voltage signal into the low-voltage signal.
In addition, in some embodiments, if the external power source supplies power to the first power line P1 through the signal isolation module and the first coupling module 11, at this time, in order to avoid an influence of a low-frequency signal in the power supply signal input by the external power source on the test signal, the first coupling module 11 further has a function of filtering the low-frequency signal from the power supply signal input by the external power source. For example, the first coupling module 11 may filter out low frequency signals between 0 and 100MHz in the externally input power supply signal.
As a specific example, fig. 2 is a schematic structural diagram of an exemplary first coupling module according to an embodiment of the present invention. As shown in fig. 2, the first coupling module 11 specifically includes a first filtering unit 111 and a first coupling unit 112.
For the first filtering unit 111, one end of the first filtering unit 111 is connected to the first power line cat P1 through the first three-phase power transmission line a 1. The other end of the first filtering unit 111 is connected to the first coupling unit 112 and the signal isolation module, respectively.
The first filtering unit 111 is configured to receive a target electrical signal containing a test signal transmitted by the first power cat P1, filter the test signal from the target electrical signal, and transmit the filtered test signal to the first coupling unit 112.
And, the first filtering unit 111 is further configured to provide the power supply energy transmitted by the external power source through the signal isolation module to the first power modem P1.
In a particular embodiment, with continued reference to fig. 2, the first filtering unit 111 may specifically include a first fire port La, a first filtering subunit L1, a first ground port PEa, a second filtering subunit L2, a first null port Na, a third filtering unit L3, a fourth filtering subunit, a fifth filtering subunit, and a sixth filtering subunit.
The first live port La is connected to one end of the first filter subunit L1 through a first live line. The first fire port La is also connected to a first power cat P1 via a fire line in the first three-phase transmission line a1 (this connection is not shown in fig. 2).
The other end of the first filtering subunit L1 is connected to the signal isolation module via the second live port Lb and the live line of the fourth three-phase transmission line (this connection is not shown in fig. 2). And the other end of the first filtering subunit L1 is further connected to the first coupling unit 112 through a second live line port Lb and a second live line. Exemplarily, the first filtering unit L1 may be embodied as an inductor.
The first ground line port PEa is connected to one end of the second filtering subunit L2 through a first ground line. The first ground port PEa is also connected to a first power cat P1 via the ground line in the first three-phase transmission line (this connection is not shown in fig. 2). Wherein the first ground line is grounded.
The other end of the second filtering subunit L2 is connected to the signal isolation module via the second ground port PEb and the ground line of the fourth three-phase transmission line (this connection is not shown in fig. 2). The other end of the second filtering subunit L2 is also connected to the first coupling unit 112 through a second ground port PEb and a second ground line. Exemplarily, the second filtering unit L2 may be embodied as an inductor.
The first neutral port Na is connected to one end of the third filter subunit L3 via a first neutral line. The first neutral wire port Na is also connected to the first power line cat through a neutral wire in the first three-phase power transmission line (this connection is not shown in fig. 2).
The other end of the third filtering unit L3 is connected to the signal isolation module through the second zero line port Nb and the zero line of the fourth three-phase power transmission line (this connection is not shown in fig. 2). And the other end of the third filtering subunit is further connected to the first coupling unit 112 through the second null line port Nb and the second null line. Exemplarily, the third filtering unit L3 may be embodied as an inductor.
One end of the fourth filtering subunit is connected with the first live wire. Illustratively, as shown in fig. 2, the fourth filtering unit may be implemented as an RC filtering subunit. The first resistor R1 is connected across the first capacitor R1.
One end of the fifth filtering subunit is connected with the first ground wire. Illustratively, as shown in fig. 2, the fifth filtering unit may be implemented as an RC filtering subunit. The second resistor R2 is connected across the second capacitor R2.
One end of the sixth filtering subunit is connected with the first zero line. Illustratively, as shown in fig. 2, the sixth filtering unit may be implemented as an RC filtering subunit. The third resistor R3 is connected across the third capacitor R3.
Wherein, with continued reference to fig. 2, the other end of the fourth filtering subunit, the other end of the fifth filtering subunit and the other end of the sixth filtering subunit are connected to each other.
After the first filtering unit 111 is introduced, the following parts of the present invention will be described in detail with reference to fig. 2 for the first coupling unit 112.
With continued reference to fig. 2, one end of the first coupling unit 112 is also connected to the signal isolation module. The other end of the first coupling unit 112 is connected to the second coupling module 12 via a second three-phase transmission line a 2. The first coupling unit 112 is configured to couple the filtered test signal to the second three-phase power transmission line a2, and transmit the filtered test signal to the second coupling module 12 through the second three-phase power transmission line a 2.
In a specific embodiment, with continued reference to fig. 2, the first coupling unit 112 may specifically include a first isolation subunit C4, a second isolation subunit Lb, a third isolation subunit C6, a first resistance subunit R4, a second resistance subunit R5, and a third resistance subunit R6.
One end of the first isolation subunit C4 is connected to the second live port Lb via a second live line. The other end of the first isolation subunit C4 is connected to a third fire line port Lc through a second fire line. Illustratively, the first isolation subcell C4 may be embodied as a capacitor. The third fire wire port Lc may be embodied as an SMA connector.
One end of the second isolator subunit C5 is connected to the second ground port PEb through a second ground line, and the other end of the second isolator subunit C5 is connected to the third ground port PEc through a second ground line. Illustratively, the second isolated subunit C5 may be embodied as a capacitor. The third ground port PEc may be embodied as an SMA connector.
One end of the third isolation subunit C6 is connected to the second neutral wire port Nb through a second neutral wire. The other end of the third isolation subunit C6 is connected to a third neutral port Nc through a second neutral. Illustratively, the third isolated subcell C6 may be embodied as a capacitor. The third zero port Nc may be embodied as an SMA connector.
One end of the first resistor subunit R4 is connected to the second live line, and the other end of the first resistor subunit R4 is grounded.
One end of the second resistor subunit R5 is connected to the second ground line, and the other end of the second resistor subunit R5 is grounded.
One end of the third resistor subunit R6 is connected to the second neutral line, and the other end of the third resistor subunit R6 is grounded.
Next, the specific connection relationship and function of the second coupling module 12 are described as follows.
The second coupling module 12 is connected to a second power cat P2 via a third three-phase transmission line a 3. In particular, with continued reference to fig. 1, the third three-phase power transmission line a3 may be implemented as a power line. The third three-phase transmission line A3 is similar to the first three-phase transmission line a1 and will not be described in detail herein.
The second coupling module 12 is configured to receive the test signal sent by the first coupling module 11, couple the test signal from the second three-phase power transmission line a2 to the third three-phase power transmission line A3, and send the test signal to the second power modem P2.
In some embodiments, the specific structure of the second coupling module 12 is similar to that of the first coupling module 11, and is not described herein again. By selecting the first coupling module 11 and the second coupling module 12 with similar structures, the test of the bidirectional transmission performance between the first power modem P1 and the second power modem P2 can be realized.
Next, specific connection relationships and functions of the performance analysis module 13 are explained below.
And the performance analysis module 13 is respectively connected with the first power modem P1 and the second power modem P2 in a communication way. Specifically, with continued reference to fig. 1, communication line a4 is indicated by a two-dot chain line in fig. 1. Illustratively, the communication line a4 may be an ethernet line.
The performance analysis module 13 has a function of transmitting a test signal. Specifically, the performance analysis module 13 is configured to send a test signal to the first power cat P1, so that the first power cat P1 outputs the test signal to the first coupling module 11.
And, the performance analysis module 13 also has a function of receiving the test signal. Specifically, the performance analysis module 13 is further configured to receive a test signal returned by the second power cat P2.
The performance analysis module 13 has a transmission performance analysis function. In particular, the performance analysis module 13 is also configured to determine the performance of the transmission between the first power cat P1 and the second power cat P2 according to the performance parameters of the transmitted test signal and the performance parameters of the received test signal.
The transmission performance between the first modem P1 and the second modem P2 may be determined according to parameters such as time delay, jitter rate, throughput rate, packet loss rate, etc. of the test signal from the performance analysis module 13 to the return performance analysis module 13.
According to the transmission performance testing device for the power modem, the first coupling module can receive the test signal of the first power modem through the first three-phase power transmission line and couple the received test signal into the three-phase power transmission line. The second coupling module can receive the test signal through the second three-phase power transmission line, couple the test signal into the third three-phase power transmission line, and then send the test signal to the second power modem through the third three-phase power transmission line. The power modem with two-wire transmission can carry out transmission performance test through a two-phase transmission line in the three-phase transmission line, and the power modem with three-wire transmission can carry out transmission performance test through a three-phase transmission line in the three-phase transmission line.
Fig. 3 is a schematic structural diagram of another transmission performance testing apparatus according to an embodiment of the present invention. The steps in fig. 3 that are the same or equivalent to those in fig. 1 are given the same reference numerals. As shown in fig. 3, the apparatus 30 is substantially the same as the apparatus 10, except that the apparatus 30 can also simulate different interference scenarios and test the transmission performance of the modem under different interference scenarios. Correspondingly, the device 30 further comprises an interference signal generation module 14 and a splitting module 15. The interference signal generating module 14 may be connected to the shunt module 15 through a second three-phase power transmission line.
The interference signal generation module 14 is configured to send the generated interference signal to the splitting module. In some embodiments, the interference signal transmitting module 14 may also generate interference signals in different interference scenarios. For example, the interference signal sending module 14 may generate an interference signal commonly found in a household circuit, such as a low-frequency interference signal generated when a household appliance such as a power adapter, an incandescent lamp, a blower, a purifier, etc. is used.
The splitting module 15 is disposed between the first coupling module 11 and the second coupling module 12, and is configured to couple the interference signal generated by the interference signal sending module 14 to the test signal output by the first coupling module 11, and transmit the test signal coupled with the interference signal to the second coupling module 12.
Fig. 4 is a schematic structural diagram of another transmission performance testing apparatus according to an embodiment of the present invention. The steps of fig. 4 that are the same or equivalent to those of fig. 1 are given the same reference numerals. As shown in fig. 4, the apparatus 40 is substantially the same as the apparatus 10, except that the apparatus 40 can also test the transmission performance of the modem under different attenuation scenarios. Accordingly, the apparatus 40 comprises an attenuation module 16 arranged between the first coupling module 11 and the second coupling module 12.
The attenuation module 16 is configured to attenuate the test signal output by the first coupling module 11, and transmit the attenuated test signal to the second coupling module 12. In particular, the attenuation value of the test signal may be adjusted. When the transmission performance of the first power modem and the second power modem is tested, the attenuation values of the test signals can be set to different values, so that the transmission performance of the first power modem and the second power modem under different attenuation values can be tested, and the transmission performance of the power modems can be tested more comprehensively.
In some embodiments, fig. 5 is a schematic structural diagram of an exemplary transmission performance testing apparatus according to an embodiment of the present invention. As shown in fig. 5, the apparatus 40 may include the interference signal generating module 14, the shunt module 15, and the attenuation module 16 at the same time. In order to keep the transmission performance of the first modem of power P1 to the second modem of power P2 consistent with the transmission performance of the second modem of power P2 to the first modem of power P1, a damping module 16a may be disposed between the splitting module 15 and the first coupling module 11, and a damping module 16b may be disposed between the splitting module 15 and the second coupling module 12.
In some embodiments, the transmission performance testing device of the power modem may further include a signal isolation module.
The signal isolation module is respectively connected with the first coupling module 11 and the second coupling module 12. The signal isolation module is used for isolating low-frequency signals in electric energy signals provided by an external power supply, and isolating the low-frequency signals by utilizing the electric energy signals to pass through the first coupling module 11 to supply power to the first power modem P1, and isolating the low-frequency signals by utilizing the electric energy signals to pass through the second coupling module 12 to supply power to the second power modem P2. Illustratively, the external power source may be an alternating current, such as 220V mains.
As a specific example, with continuing reference to fig. 5, if the transmission performance testing apparatus for the power modem includes the interference signal sending module 14, the signal isolation module 17 may also provide power for the interference signal sending module 14. The signal isolation module 17 transmits the power provided by the external power VCC1 to the first coupling module 11, the second coupling module 12, and the interference signal transmitting module 14 through the power line a 5.
In one embodiment, in order to ensure that the quality of the test signal is not affected by the external power source, the first coupling module 11 may filter out low frequency signals between 0 and 100MHz in the externally input power supply signal.
The method according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
Based on the same inventive concept, fig. 6 is a schematic flowchart illustrating a transmission performance test method of a power modem according to an embodiment of the present invention. As shown in fig. 6, the transmission performance testing method 600 of the modem in this embodiment can be applied to the transmission performance testing apparatus of the modem according to the above embodiments of the present invention and shown in fig. 1 to 5. The transmission performance test method 600 for the power modem may include the following steps S610 to S640.
S610, the performance analysis module 13 sends a test signal to the first power cat P1, so that the first power cat P1 outputs the test signal to the first coupling module 11.
S620, the first coupling module 11 receives the test signal sent by the first power modem P1, and sends the test signal to the second coupling module 12.
S630, the second coupling module 12 receives the test signal and sends the test signal to the second power cat P2, so that the second power cat P2 sends the test signal to the performance analysis module 13.
S640, the performance analysis module 13 determines the transmission performance between the first modem P1 and the second modem P2 according to the performance parameters of the test signal transmitted by itself (i.e. the test signal transmitted by the performance analysis module 13 to the first modem P1 in S610) and the performance parameters of the test signal received by itself (i.e. the test signal transmitted by the second modem P2 to the performance analysis module 13).
In some embodiments, the transmission performance testing apparatus for the modem further includes an attenuation module disposed between the first coupling module and the second coupling module. The test signal sent to the second coupling module is the signal attenuated by the attenuation module.
That is to say, the first coupling module 11 does not directly send the test signal to the second coupling module 12, but the first coupling module 11 sends the test signal to the attenuation module first, and the attenuation module attenuates the test signal and sends the attenuated test signal to the second coupling module 12.
In some embodiments, if the transmission performance testing apparatus for the modem further includes a splitting module disposed between the first coupling module and the second coupling module, and an interference signal generating module connected to the splitting module. The test signal sent to the second coupling module is obtained by coupling the test signal sent by the first coupling module to the splitting module and the interference signal generated by the interference signal generating module.
That is to say, the first coupling module 11 does not directly send the test signal to the second coupling module 12, but the first coupling module 11 sends the test signal to the shunt module first, and the shunt module couples the interference signal generated by the interference signal generation module into the test signal and sends the test signal coupled with the interference signal to the second coupling module 12.
According to the transmission performance testing method of the modem, the first coupling module in the transmission performance testing device of the modem can receive the test signal of the first modem through the first three-phase transmission line and couple the received test signal into the three-phase transmission line. The second coupling module can receive the test signal through the second three-phase power transmission line, couple the test signal into the third three-phase power transmission line, and then send the test signal to the second power modem through the third three-phase power transmission line. The power modem with two-wire transmission can carry out transmission performance test through a two-phase transmission line in the three-phase transmission line, and the power modem with three-wire transmission can carry out transmission performance test through a three-phase transmission line in the three-phase transmission line.
Other details of the transmission performance testing method for the modem according to the embodiment of the present invention are similar to those of the transmission performance testing apparatus for the modem described in the example shown in fig. 1 to 5, and can achieve the corresponding technical effects, and are not described herein again for brevity.
Fig. 7 is a block diagram of an exemplary hardware architecture of a transmission performance test apparatus for a power modem in an embodiment of the present invention.
As shown in fig. 7, the transmission performance test apparatus 700 for a power modem includes an input device 701, an input interface 702, a central processing unit 703, a memory 704, an output interface 705, and an output device 706. The input interface 702, the central processing unit 703, the memory 704, and the output interface 705 are connected to each other through a bus 710, and the input device 701 and the output device 706 are connected to the bus 710 through the input interface 702 and the output interface 705, respectively, and further connected to other components of the transmission performance testing device 700 for the modem.
Specifically, the input device 701 receives input information from the outside, and transmits the input information to the central processor 703 through the input interface 702; the central processor 703 processes input information based on computer-executable instructions stored in the memory 704 to generate output information, stores the output information temporarily or permanently in the memory 704, and then transmits the output information to the output device 706 through the output interface 705; the output device 706 outputs the output information to the outside of the transmission performance test device 700 of the power modem for use by the user.
That is, the transmission performance test apparatus of the power modem shown in fig. 7 may also be implemented to include: a memory storing computer-executable instructions; and a processor which, when executing computer executable instructions, may implement the method and apparatus of the transmission performance test device for a power cat described in connection with fig. 1-6.
In one embodiment, the transmission performance test apparatus 700 of the power cat shown in fig. 7 may be implemented as an apparatus that may include: a memory for storing a program; and the processor is used for operating the program stored in the memory so as to execute the transmission performance test method of the power modem in the embodiment of the invention.
The embodiment of the invention also provides a computer storage medium, wherein computer program instructions are stored on the computer storage medium, and when being executed by a processor, the computer program instructions realize the transmission performance test method of the modem in the embodiment of the invention.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Claims (13)
1. A transmission performance testing apparatus for a power modem, the apparatus comprising:
the first coupling module is used for acquiring a test signal sent by the first power modem, coupling the test signal into the second three-phase power transmission line from the first three-phase power transmission line, and sending the test signal to the second coupling module through the second three-phase power transmission line;
the second coupling module is connected with a second power modem through a third three-phase power transmission line and used for receiving the test signal, coupling the test signal into the third three-phase power transmission line from the second three-phase power transmission line and sending the test signal to the second power modem through the third three-phase power transmission line;
the performance analysis module is in communication connection with the first power modem and the second power modem respectively, and is configured to send the test signal to the first power modem, so that the first power modem outputs the test signal to the first coupling module; and receiving the test signal returned by the second power cat; and the power modem is further used for determining the transmission performance between the first power modem and the second power modem according to the performance parameters of the test signal sent by the power modem and the performance parameters of the test signal received by the power modem.
2. The apparatus of claim 1, further comprising:
the interference signal generation module is connected with the shunt module and used for sending the generated interference signal to the shunt module;
the shunt module is disposed between the first coupling module and the second coupling module, and is configured to couple the interference signal to the test signal output by the first coupling module, and transmit the test signal coupled with the interference signal to the second coupling module.
3. The apparatus of claim 1 or claim 2, further comprising:
the attenuation module is arranged between the first coupling module and the second coupling module and is used for attenuating the test signal output by the first coupling module and transmitting the attenuated test signal to the second coupling module.
4. The apparatus of claim 1, further comprising:
the signal isolation module, the signal isolation module respectively with first coupling module with the second coupling module is connected, the signal isolation module is arranged in the low frequency signal of the electric energy signal of keeping apart the external power source and providing to utilize and keep apart low frequency signal the electric energy signal passes through first coupling module does first electric power cat supplies power, and utilizes keep apart low frequency signal the electric energy signal passes through the second coupling module does the power supply of second electric power cat.
5. The apparatus of claim 4, wherein the first coupling module specifically comprises:
the first filtering unit is used for receiving a target electrical signal which is sent by the first power modem and contains the test signal, filtering the test signal from the target electrical signal, and transmitting the filtered test signal to the first coupling unit; the first filtering unit is further used for providing power supply electric energy transmitted by the external power supply through the signal isolation module to the first power modem;
one end of the first coupling unit is further connected with the signal isolation module, the other end of the first coupling unit is connected with the second coupling module through the second three-phase power transmission line, and the first coupling unit is used for coupling the filtered test signal to the second three-phase power transmission line and transmitting the filtered test signal to the second coupling module through the second three-phase power transmission line.
6. The apparatus of claim 5, wherein the first filtering unit comprises:
the first fire wire port is connected with one end of the first filtering subunit through a first fire wire, and is also connected with the first power line modem through a fire wire in the first three-phase power transmission line;
the other end of the first filtering subunit is connected with the signal isolation module through a second live wire port and a live wire of the fourth three-phase power transmission line, and the other end of the first filtering subunit is also connected with the first coupling unit through the second live wire port and a second live wire;
the first ground wire port is connected with one end of the second filtering subunit through a first ground wire, and the first ground wire port is also connected with the first power line modem through a ground wire in the first three-phase power transmission line;
the other end of the second filtering subunit is connected with the signal isolation module through a second ground port and a ground wire of the fourth three-phase power transmission line, and the other end of the second filtering subunit is also connected with the first coupling unit through the second ground port and a second ground wire;
the first zero line port is connected with one end of the third filter subunit through a first zero line, and is also connected with the first power line modem through a zero line in the first three-phase power transmission line;
the other end of the third filtering subunit is connected with the signal isolation module through a second zero line port and a zero line of the fourth three-phase power transmission line, and the other end of the third filtering subunit is also connected with the first coupling unit through the second zero line port and a second zero line;
a fourth filtering subunit, one end of which is connected with the first live wire;
a fifth filtering subunit, one end of which is connected with the first ground wire;
a sixth filtering subunit, one end of which is connected with the first zero line;
wherein the other end of the fourth filtering subunit, the other end of the fifth filtering subunit, and the other end of the sixth filtering subunit are connected to each other.
7. The apparatus of claim 6, wherein the first coupling unit comprises:
one end of the first isolation subunit is connected with the second fire wire port through a second fire wire, and the other end of the first isolation subunit is connected with a third fire wire port through a second fire wire;
one end of the second isolation subunit is connected with the second ground port through a second ground wire, and the other end of the second isolation subunit is connected with a third ground port through a second ground wire;
one end of the third isolation subunit is connected with the second zero line port through a second zero line, and the other end of the third isolation subunit is connected with a third zero line port through a second zero line;
a first resistor subunit, one end of which is connected to the second live wire;
a second resistor subunit, one end of which is connected to the second ground line;
a third resistor subunit, one end of which is connected to the second zero line;
the other end of the first resistor subunit, the other end of the second resistor subunit and the other end of the third resistor subunit are all grounded.
8. The apparatus of claim 1,
the first three-phase power transmission line and the third three-phase power transmission line are power lines, and the second three-phase power transmission line is a three-phase radio frequency coaxial cable.
9. A transmission performance testing method for a modem, which is applied to the transmission performance testing device for the modem according to claim 1, the method comprising:
the performance analysis module sends the test signal to the first power modem, so that the first power modem outputs the test signal to the first coupling module;
the first coupling module receives a test signal sent by the first power modem and sends the test signal to the second coupling module;
the second coupling module receives the test signal and sends the test signal to the second power modem, so that the second power modem sends the test signal to the performance analysis module;
the performance analysis module determines the transmission performance between the first power modem and the second power modem according to the performance parameters of the test signal sent by the performance analysis module and the performance parameters of the test signal received by the performance analysis module.
10. The method of claim 9, wherein the apparatus further comprises an attenuation module disposed between the first coupling module and the second coupling module,
the test signal sent to the second coupling module is a signal attenuated by the attenuation module.
11. The method of claim 9 or claim 10, wherein the apparatus further comprises a splitting module disposed between the first coupling module and the second coupling module, and an interference signal generating module connected to the splitting module,
the test signal sent to the second coupling module is obtained by coupling the test signal sent to the first coupling module by the shunt module and an interference signal generated by the interference signal generation module.
12. A transmission performance test apparatus for a power modem, the apparatus comprising:
a memory for storing a program;
a processor for executing the program stored in the memory to execute the transmission performance test method for the electric cat according to any one of claims 9 to 11.
13. A computer storage medium having computer program instructions stored thereon which, when executed by a processor, implement the transmission performance testing method for a power cat as claimed in any one of claims 9 to 11.
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| CN202010284518.8A CN113541735A (en) | 2020-04-13 | 2020-04-13 | Transmission performance testing method, device, equipment and medium for power modem |
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