CN113890566A - Platform and method for testing conventional performance indexes of power line carrier communication equipment - Google Patents
Platform and method for testing conventional performance indexes of power line carrier communication equipment Download PDFInfo
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Abstract
The invention belongs to the technical field of power line carrier communication equipment, and discloses a platform and a method for testing conventional performance indexes of power line carrier communication equipment, wherein the platform comprises the following components: the system comprises a first artificial power supply network, a second artificial power supply network, a program-controlled attenuator, a control system and a spectrum analyzer; the first artificial power supply network is connected with the programmable attenuator and is used for being connected with the tested carrier wave transmitting equipment; the programmable attenuator is connected with a second artificial power supply network, and the second artificial power supply network is used for being connected with the carrier receiving equipment to be tested; the first artificial power supply network is connected with the second artificial power supply network, and the first artificial power supply network and the second artificial power supply network are both connected with the transmission loop; the transmission loop is connected with the spectrum analyzer, the spectrum analyzer is connected with the control system, and the control system is connected with the programmable attenuator; the transmission loop is used for separating carrier signals. Has the advantages that: the conventional performance of the power line carrier communication equipment can be tested more comprehensively and more accurately.
Description
Technical Field
The invention relates to the technical field of power line carrier communication equipment, in particular to a platform and a method for testing conventional performance indexes of power line carrier communication equipment.
Background
Power Line Carrier (PLC) communication is a special communication method that utilizes high-frequency modulation signals and Power lines as information transmission media to perform voice or data transmission, and in Power Line Carrier communication, the signal transmission performance of a Carrier communication device affects the information transmission effect, so that it is necessary to comprehensively test the PLC conventional performance of the communication device to determine whether the communication device meets the requirements.
The prior art with the application number of CN201610556135.5 discloses an intelligent detection system for carrier communication modules. In the system, a computer host is connected with a detection test bed through an Ethernet, and is communicated with a spectrum analyzer, a noise source simulator, a variable load simulator and a program-controlled attenuator to control carrier channel parameters, so that the performance test of a carrier communication module and the test of a simulation system are completed. However, the above prior art has few parameters for testing, and the testing aspect is not comprehensive enough, and accurate data of the conventional performance of the power line carrier communication device cannot be obtained.
Disclosure of Invention
The purpose of the invention is: the detection device of the power line carrier communication device in the prior art is improved, so that the conventional performance of the power line carrier can be comprehensively detected, and more accurate data can be obtained.
In order to achieve the above object, the present invention provides a test platform for conventional performance indexes of power line carrier communication devices, the test platform comprising: the system comprises a first artificial power supply network, a second artificial power supply network, a program-controlled attenuator, a control system and a spectrum analyzer; the first port of the first artificial power supply network is connected with the first port of the programmable attenuator and is also used for being connected with the first port of the tested carrier wave transmitting equipment; the second port of the program-controlled attenuator is connected with the first port of a second artificial power supply network, and the first port of the second artificial power supply network is also used for being connected with the first port of the tested carrier receiving equipment; the second port of the first artificial power supply network is connected with the second port of the second artificial power supply network, and the third port of the first artificial power supply network and the third port of the second artificial power supply network are both connected with the first port of the transmission loop; the second port of the transmission loop is connected with the first port of the spectrum analyzer, the second port of the spectrum analyzer is connected with the first port of the control system, and the second port of the control system is connected with the third port of the programmable attenuator; the transmission loop is used for separating carrier signals.
Furthermore, the transmission loop comprises a wave-blocking circuit, a filter circuit and a coupling circuit; the third port of the first artificial power supply network and the third port of the second artificial power supply network are connected with the first port of the wave resistance circuit, the second port of the wave resistance circuit is connected with the first port of the filter circuit, the second port of the filter circuit is connected with the first port of the coupling circuit, and the second port of the coupling circuit is connected with the first port of the spectrum analyzer.
Furthermore, the first port of the programmable attenuator is also used for being connected with the first port of the tested carrier wave transmitting device, and the second port of the programmable attenuator is also used for being connected with the first port of the tested carrier wave receiving device.
Furthermore, the test platform further comprises a noise generation device, and a first port of the noise generation device is connected with a first port of the programmable attenuator.
Further, the noise generation device comprises a signal generator and an inverter, and the signal generator and the inverter are used for operating and simulating the power grid noise.
Furthermore, the test platform also comprises a first electrical parameter measurement module and a second electrical parameter measurement module; a first port of the first electrical parameter measurement module is connected with a first port of a first artificial power supply network, a second port of the first electrical parameter measurement module is used for being connected with a second port of the tested carrier wave transmitting equipment, and a third port of the first electrical parameter measurement module is connected with a third port of the control system; and a first port of the second electrical parameter measurement module is connected with a first port of a second artificial power supply network, a second port of the second electrical parameter measurement module is used for being connected with a second port of the measured carrier receiving equipment, and a third port of the second electrical parameter measurement module is connected with a third port of the control system.
Further, the control system is provided with a measurement module, and the measurement module is provided with a third port of the control system.
Furthermore, the first electrical parameter measurement module and the second electrical parameter measurement module both comprise an induction coil and a voltage input interface, the induction coil of the first electrical parameter measurement module is used for being bypassed by a power supply line of the tested carrier wave transmitting equipment, and the power supply input interface of the first electrical parameter measurement module is used for being connected in parallel with the power supply line of the tested carrier wave transmitting equipment; the induction coil of the second electrical parameter measurement module is used for being bypassed by a power supply line of the tested carrier receiving equipment, and the power input interface of the second electrical parameter measurement module is used for being connected with the power supply line of the tested carrier receiving equipment in parallel.
The invention also discloses a method for testing the conventional performance index of the power line carrier communication equipment, which comprises the following steps: by applying the test platform, connecting a first port of the tested carrier wave transmitting equipment with a first port of a first artificial power supply network, and connecting a first port of the tested carrier wave receiving equipment with a first port of a second artificial power supply network; and acquiring a carrier signal sent by the carrier transmitting equipment to be detected, wherein the carrier signal sequentially passes through the first artificial power supply network, the transmission loop and the spectrum analyzer, and the carrier transmitting performance and the bandwidth of the carrier transmitting equipment to be detected are obtained through the spectrum analyzer.
Further, the test method further comprises:
the noise generation device simulates power grid noise, the test platform is used for obtaining signal-to-noise ratio change and transmission error rate change, and the anti-interference performance of the carrier communication circuit is obtained according to the signal-to-noise ratio change and the data transmission error rate change.
Compared with the prior art, the platform and the method for testing the conventional performance indexes of the power line carrier communication equipment have the advantages that: the test platform can detect the performance of various power line carriers, so that the conventional performance of the power line carriers can be comprehensively detected; two artificial power supply networks and transmission loops are arranged in the test platform, so that noise in the detection process can be better eliminated, and more accurate data can be obtained.
Drawings
Fig. 1 is a schematic overall structure diagram of a conventional performance index testing platform of a power line carrier communication device according to the present invention;
fig. 2 is a schematic structural diagram of a transmission loop in a conventional performance index testing platform of a power line carrier communication device according to the present invention;
FIG. 3 is a schematic structural diagram of a noise generation device in a conventional performance index testing platform of a power line carrier communication device according to the present invention;
fig. 4 is a schematic structural diagram of an electrical parameter measurement module in a conventional performance index test platform of a power line carrier communication device according to the present invention.
In the figure, 1, a first artificial power supply network; 2. a second artificial power network; 3. a programmable attenuator; 4. a control system; 41. a measurement module; 5. a spectrum analyzer; 6. a transmission loop; 61. a wave choke circuit; 62. a filter circuit; 63. a coupling circuit; 7. a noise generating device; 71. a signal generator; 72. an inverter; 8. a first electrical parameter measurement module; 81. an induction coil; 82. a voltage input interface; 9 a second electrical parameter measuring module.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1:
referring to fig. 1, the invention discloses a test platform for conventional performance indexes of power line carrier communication equipment, comprising: the system comprises a first artificial power supply network 1, a second artificial power supply network 2, a program-controlled attenuator 3, a control system 4 and a spectrum analyzer 5; a first port of the first artificial power supply network 1 is connected with a first port of the programmable attenuator 3, and the first port of the first artificial power supply network 1 is also used for being connected with a first port of the tested carrier wave transmitting equipment; the second port of the programmable attenuator 3 is connected with the first port of the second artificial power network 2, and the first port of the second artificial power network 2 is also used for being connected with the first port of the tested carrier receiving equipment; the second port of the first artificial power supply network 1 is connected with the second port of the second artificial power supply network 2, and the third port of the first artificial power supply network 1 and the third port of the second artificial power supply network 2 are both connected with the first port of the transmission loop 6; a second port of the transmission loop 6 is connected with a first port of a spectrum analyzer 5, a second port of the spectrum analyzer 5 is connected with a first port of a control system 4, and a second port of the control system 4 is connected with a third port of the programmable attenuator 3; the transmission loop 6 is used for separating carrier signals.
In the embodiment, the first artificial power supply network 1 and the second artificial power supply network 2 are used for removing power supply noise in a test process, wherein the power supply noise comprises the influence of sound wave and photoelectricity on power line fluctuation; the program-controlled attenuator 3 is used for attenuating carrier signals and testing the carrier communication sensitivity; the control system 4 is used for regulating and controlling the test process; the spectrum analyzer 5 tests the center frequency, peak level, out-of-band peak level and spectrum width of the carrier signal of the carrier equipment.
In this embodiment, the power line carrier communication device is divided into a transmitting device and a receiving device during testing, the transmitting device and the receiving device form a complete wireless communication network, and can better detect transmitted and received power line carrier signals.
In this embodiment, the connections are all electrical connections.
In this embodiment, the first port of the programmable attenuator 3 is an input end of the programmable attenuator 3, the second port of the programmable attenuator 3 is an output end of the programmable attenuator 3, the third port of the programmable attenuator 3 is connected to an output end of the control system 4, and the control system 4 is configured to regulate and control a test process. The first port of the spectrum analyzer 5 is an input port, and the second port of the spectrum analyzer is an output port.
In this embodiment, through programmable attenuator 3 with control system 4 passes through electric wire electric connection, control system 4 with spectral analysis appearance 5 can play control system 4 comprehensive regulation and control test platform through electric wire electric connection's setting, realizes the effect of the conventional performance index integrated test of full aspect PLC.
In this embodiment, referring to fig. 2, the transmission loop 6 includes a wave choke circuit 61, a filter circuit 62 and a coupling circuit 63; the third port of the first artificial power supply network 1 and the third port of the second artificial power supply network 2 are both connected with the first port of the wave-resistance circuit 61, the second port of the wave-resistance circuit 61 is connected with the first port of the filter circuit 62, the second port of the filter circuit 62 is connected with the first port of the coupling circuit 63, and the second port of the coupling circuit 63 is connected with the first port of the spectrum analyzer 5.
In this embodiment, the first artificial power supply network 1 and the second artificial power supply network 2 are respectively connected with the spectrum analyzer 5 through a transmission loop 6, the transmission loop 6 includes a wave resistance circuit 61, a filter circuit 62 and a coupling circuit 63, the wave resistance circuit 61, the filter circuit 62 and the coupling circuit 63 are all electrically connected through a wire, so that the separation of the carrier signal and the 220V power supply by the transmission loop 6 can be achieved, the artificial power supply network removes power supply noise, and the accuracy of collecting the carrier signal is improved.
In this embodiment, the first port of the programmable attenuator 3 is further configured to be connected to a first port of a measured carrier transmitting device, and the second port of the programmable attenuator 3 is further configured to be connected to a first port of a measured carrier receiving device.
In this embodiment, the test platform further comprises a noise generation device 7, and a first port of the noise generation device 7 is connected with a first port of the programmable attenuator 3.
In the present embodiment, referring to fig. 3, the noise generation device 7 includes a signal generator 71 and an inverter 72, and the signal generator 71 and the inverter 72 are used for operating the analog grid noise.
In the present embodiment, the noise generating device 7 includes a noise processing module, a noise collecting and separating module, a signal generator 71, and an inverter 72, wherein the noise collecting and separating module, the signal generator 71, and the inverter 72 are all connected to the noise processing module, and the signal generator 71 and the signal inverter 72 are connected.
In this embodiment, referring to fig. 4, the test platform further includes a first electrical parameter measurement module 8 and a second electrical parameter measurement module 9; a first port of the first electrical parameter measurement module 8 is connected with a first port of the first artificial power supply network 1, a second port of the first electrical parameter measurement module 8 is used for being connected with a second port of the measured carrier wave transmitting device, and a third port of the first electrical parameter measurement module 8 is connected with a third port of the control system 4; the first port of the second electrical parameter measurement module 9 is connected with the first port of the second artificial power supply network 2, the second port of the second electrical parameter measurement module 9 is used for being connected with the second port of the measured carrier receiving device, and the third port of the second electrical parameter measurement module 9 is connected with the third port of the control system 4.
In the present embodiment, the control system 4 is provided with a measurement module 41, and the measurement module 41 is provided with a third port of the control system 4.
In this embodiment, each of the first electrical parameter measurement module 8 and the second electrical parameter measurement module 9 includes an induction coil 81 and a voltage input interface 82, the induction coil 81 of the first electrical parameter measurement module 8 is used for being bypassed by a power supply line of the measured carrier wave transmitting device, and the power input interface of the first electrical parameter measurement module 8 is used for being connected in parallel with the power supply line of the measured carrier wave transmitting device; the induction coil 81 of the second electrical parameter measurement module 9 is used for being bypassed by a power supply line of the measured carrier receiving device, and the power input interface of the second electrical parameter measurement module 9 is used for being connected in parallel with the power supply line of the measured carrier receiving device.
In this embodiment, through the electric parameter measurement module includes induction coil 81 and voltage input interface 82, the power supply line of carrier communication equipment bypasses current induction coil 81, voltage input interface 82 and the setting of the voltage end parallel connection of the power supply line of carrier communication equipment can play the collection of electric parameter measurement module through electric current and voltage to carrier communication equipment, through relevant calculation, obtains the effect of parameters such as active power, reactive power and power factor.
By applying the measuring platform, the following tests can be realized:
A) the carrier signal transmission performance and the frequency bandwidth are detected on a test platform in combination with a spectrum analyzer, an artificial power supply network is arranged, the artificial power supply network collects signals of carrier communication equipment and sends the signals to a transmission loop 6, the transmission loop 6 realizes the separation of the carrier signals and a 220V power supply through a wave resistance circuit 61, a filter circuit 62 and a coupling circuit 63, and finally the center frequency, the peak level, the out-of-band peak level and the spectrum width of the carrier signals of the carrier equipment are tested through the spectrum analyzer, wherein the larger the spectrum width of the signals is, the smaller the attenuation of the peak level is, and the better the transmission performance of the carrier signals is.
B) The anti-interference capability of the carrier communication equipment is that the signal generator 71 is combined with equipment such as an actual inverter 72 to operate and simulate power grid noise, the signal-to-noise ratio change condition is measured through the carrier communication circuit, and the anti-interference performance condition of the carrier communication circuit is obtained by combining the change of the data transmission error rate, wherein the smaller the error rate is, the stronger the anti-interference performance of the carrier communication circuit is.
C) And (3) carrier signal receiving sensitivity, attenuating the carrier signal by using a programmable attenuator 3 in the system until carrier communication cannot be realized, and measuring the carrier communication receiving sensitivity by using an attenuation value of the programmable attenuator 3, wherein the larger the attenuation value is, the higher the carrier communication receiving sensitivity is.
D) The error rate, the data transmission success rate and the error correction coding performance are set to be the same, and the actual effect of the error correction coding of the carrier communication equipment is evaluated by comparing the data transmission success rate change condition with or without the error correction coding.
E) The power consumption of the carrier communication equipment is obtained by acquiring the current and the voltage of the carrier communication equipment through the electric parameter measuring module and performing related calculation on the parameters such as active power, reactive power, power factors and the like, and the testing platform is communicated with the electric parameter measuring module to realize the control and data acquisition of the module, so that the power consumption parameter of the carrier communication module is obtained.
F) And the communication protocol is communicated with the tested carrier communication equipment by using the test platform so as to test whether the tested carrier communication equipment meets the requirements of functions and protocols such as related data acquisition, parameter setting, event alarm and the like. The tested carrier wave communication device comprises a tested carrier wave transmitting device and a tested carrier wave receiving device.
Example 2:
the invention also discloses a method for testing the conventional performance index of the power line carrier communication equipment, which comprises the following steps: by applying the test platform of embodiment 1, connecting a first port of a tested carrier wave transmitting device with a first port of a first artificial power supply network 1, and connecting a first port of a tested carrier wave receiving device with a first port of a second artificial power supply network 2; and acquiring a carrier signal sent by the tested carrier transmitting equipment, wherein the carrier signal sequentially passes through the first artificial power supply network 1, the transmission loop 6 and the spectrum analyzer 5, and the carrier sending performance and the bandwidth of the tested carrier transmitting equipment are obtained through the spectrum analyzer 5.
In this embodiment, the testing method further includes:
the noise generation device 7 simulates power grid noise, the test platform is used for obtaining signal-to-noise ratio change and transmission error rate change, and the anti-interference performance of the carrier communication circuit is obtained according to the signal-to-noise ratio change and the data transmission error rate change.
In this embodiment, when the test platform of the present invention is used for testing, when the device to be tested is a carrier communication module, a signal is taken from the first artificial power network 1 at the input end connected with the carrier device to be tested; when the tested device is a carrier electric energy meter, a signal is obtained from the second artificial power supply network 2 at the output end, and during testing, an instruction is sent to the upper computer corresponding to the control system 4 to carry out testing.
The test process comprises the following steps:
A) the carrier wave transmitting equipment to be tested transmits a carrier wave signal, the carrier wave signal is separated from a 220V power supply signal through a transmission loop 6, the separated carrier wave signal is transmitted to the carrier wave receiving equipment to be tested through a program-controlled attenuator 3, and a spectrum analyzer 5 collects the carrier wave signal through an artificial power supply network and tests the central frequency, the peak level, the out-of-band peak level and the spectrum width of the carrier wave signal of the carrier wave equipment.
B) The noise generating device 7 inputs a noise signal to the input end of the programmable attenuator 3, the control system 4 measures the change condition of the signal-to-noise ratio, and the change of the data transmission error rate is combined to obtain the anti-interference performance condition of the carrier communication circuit, wherein the error rate generates circuit noise.
C) The method is characterized in that a common sensitivity test method of the radio communication equipment is adopted for testing, and the wave-picking capability and the integral receiving performance of a carrier communication product are mainly examined by taking the communication success rate as a judgment basis. When the sensitivity test is carried out, the programmable attenuator 3 in the system is used for attenuating the carrier signal until the carrier communication can not be realized, and at the moment, the attenuation value of the programmable attenuator 3 is used for measuring the receiving sensitivity of the carrier communication. The system can determine the attenuation value of the attenuator by using a dichotomy, attenuate a carrier signal by using the programmable attenuator 3 in the system until the carrier communication cannot be realized, and measure the receiving sensitivity of the carrier communication by using the attenuation value of the programmable attenuator 3.
D) When carrying out carrier communication error rate test, because the information quantity difference of various data is great, the transmission mode with variable data length is adopted, the first byte is fixed as 68H and is used as the sign byte of data receiving, the Hamming code error correction mode of 4 bits is adopted, the rest data is error-detected by adopting the accumulation and inspection mode, the transmission detection is carried out according to the preset data, and the error rate is determined by comparing the ratio of the error code quantity of the received and sent information and the total communication code element quantity. The ratio of the array with accurate all communication code elements to the total communication array is defined as the data transmission success rate, the parameter is related to the error rate and the array length, and the actual effect of the error correction coding of the carrier communication equipment is evaluated by comparing the data transmission success rate change condition with or without the error correction coding.
E) The electric parameter measuring module is used for testing, a power supply wire of the carrier communication equipment winds a current induction coil 81 of the electric parameter measuring module, and the electric parameter measuring module is used for collecting the current of the concentrator or the collector through the principle of electromagnetic induction; the voltage end of a power supply power line of the carrier communication equipment is connected in parallel to the voltage input end of the electric parameter measuring module, so that the voltage acquisition of the carrier communication equipment by the electric parameter measuring module is realized; the electric parameter measurement module acquires current and voltage of the carrier communication equipment and obtains parameters such as active power, reactive power, power factors and the like through related calculation. The test platform is communicated with the electric parameter measurement module through RS485 to realize control and data acquisition of the module, so that power consumption parameters of the carrier communication module are obtained.
F) The carrier communication equipment must meet the requirements of related communication protocols, the current main communication protocols include 61850, DL/T645-2007, DL/T645-1997, IEC62056 and the like, and on a power carrier test platform, a test platform is used for communicating with the 'tested carrier communication equipment' to test whether the 'tested carrier communication equipment' meets the requirements of functions and protocols such as related data acquisition, parameter setting, event alarm and the like.
In summary, the embodiment of the invention provides a test platform for conventional performance indexes of power line carrier communication equipment, which has the beneficial effects that the test platform can detect the performance of various power line carriers, so as to realize the comprehensive detection of the conventional performance of the power line carriers; two artificial power supply networks and a transmission loop 6 are arranged in the test platform, so that noise in the detection process can be better eliminated, and more accurate data can be obtained.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A test platform for conventional performance indexes of power line carrier communication equipment is characterized by comprising: the system comprises a first artificial power supply network, a second artificial power supply network, a program-controlled attenuator, a control system and a spectrum analyzer; the first port of the first artificial power supply network is connected with the first port of the programmable attenuator and is also used for being connected with the first port of the tested carrier wave transmitting equipment; the second port of the program-controlled attenuator is connected with the first port of a second artificial power supply network, and the first port of the second artificial power supply network is also used for being connected with the first port of the tested carrier receiving equipment; the second port of the first artificial power supply network is connected with the second port of the second artificial power supply network, and the third port of the first artificial power supply network and the third port of the second artificial power supply network are both connected with the first port of the transmission loop; the second port of the transmission loop is connected with the first port of the spectrum analyzer, the second port of the spectrum analyzer is connected with the first port of the control system, and the second port of the control system is connected with the third port of the programmable attenuator; the transmission loop is used for separating carrier signals.
2. The platform for testing the conventional performance index of the power line carrier communication equipment as claimed in claim 1, wherein the transmission loop comprises a wave choke circuit, a filter circuit and a coupling circuit; the third port of the first artificial power supply network and the third port of the second artificial power supply network are connected with the first port of the wave resistance circuit, the second port of the wave resistance circuit is connected with the first port of the filter circuit, the second port of the filter circuit is connected with the first port of the coupling circuit, and the second port of the coupling circuit is connected with the first port of the spectrum analyzer.
3. The platform of claim 1, wherein the first port of the programmable attenuator is further configured to be connected to a first port of a carrier transmitter under test, and the second port of the programmable attenuator is further configured to be connected to a first port of a carrier receiver under test.
4. The platform for testing the conventional performance index of the power line carrier communication equipment as claimed in claim 1, wherein the platform further comprises a noise generation device, and a first port of the noise generation device is connected to the first port of the programmable attenuator.
5. The platform for testing the conventional performance index of the power line carrier communication equipment as claimed in claim 4, wherein the noise generation device comprises a signal generator and an inverter, and the signal generator and the inverter are used for operating and simulating grid noise.
6. The platform for testing the conventional performance index of the power line carrier communication equipment as claimed in claim 1, wherein the platform further comprises a first electrical parameter measuring module and a second electrical parameter measuring module; a first port of the first electrical parameter measurement module is connected with a first port of a first artificial power supply network, a second port of the first electrical parameter measurement module is used for being connected with a second port of the tested carrier wave transmitting equipment, and a third port of the first electrical parameter measurement module is connected with a third port of the control system; and a first port of the second electrical parameter measurement module is connected with a first port of a second artificial power supply network, a second port of the second electrical parameter measurement module is used for being connected with a second port of the measured carrier receiving equipment, and a third port of the second electrical parameter measurement module is connected with a third port of the control system.
7. The platform for testing the conventional performance index of the power line carrier communication equipment as claimed in claim 6, wherein the control system is provided with a measurement module, and the measurement module is provided with a third port of the control system.
8. The platform of claim 6, wherein the first electrical parameter measurement module and the second electrical parameter measurement module each comprise an induction coil and a voltage input interface, the induction coil of the first electrical parameter measurement module is used for being bypassed by a power supply line of the measured carrier emission device, and the power input interface of the first electrical parameter measurement module is used for being connected in parallel with the power supply line of the measured carrier emission device; the induction coil of the second electrical parameter measurement module is used for being bypassed by a power supply line of the tested carrier receiving equipment, and the power input interface of the second electrical parameter measurement module is used for being connected with the power supply line of the tested carrier receiving equipment in parallel.
9. A conventional performance index testing method for power line carrier communication equipment is characterized by comprising the following steps: the test platform of any one of claims 1 to 8, wherein the first port of the tested carrier wave transmitting device is connected with the first port of the first artificial power network, and the first port of the tested carrier wave receiving device is connected with the first port of the second artificial power network; and acquiring a carrier signal sent by the carrier transmitting equipment to be detected, wherein the carrier signal sequentially passes through the first artificial power supply network, the transmission loop and the spectrum analyzer, and the carrier transmitting performance and the bandwidth of the carrier transmitting equipment to be detected are obtained through the spectrum analyzer.
10. The method for testing the conventional performance index of the power line carrier communication device according to claim 9, wherein the testing method further comprises:
the noise generation device simulates power grid noise, the test platform is used for obtaining signal-to-noise ratio change and transmission error rate change, and the anti-interference performance of the carrier communication circuit is obtained according to the signal-to-noise ratio change and the data transmission error rate change.
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| Publication number | Priority date | Publication date | Assignee | Title |
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