High-speed power line carrier communication module detection system and method

Abstract

The invention relates to a high-speed power line carrier communication module detection system and method, and the system comprises a standard high-speed power line carrier communication module which is used for generating a reference signal; the spectrum analyzer is used for analyzing the tested signal and the reference signal of the high-speed power line carrier communication module to be tested and recording the spectrum characteristics of the tested signal and the reference signal; the oscilloscope is used for collecting time domain waveforms of a tested signal and a reference signal of the high-speed power line carrier communication module to be tested and analyzing time domain characteristics of the time domain waveforms; and the upper computer is used for issuing test instructions to the standard high-speed power line carrier communication module and the to-be-tested high-speed power line carrier communication module, and generating a detection report according to the spectrum characteristics recorded by the spectrum analyzer and the time domain characteristics analyzed by the oscilloscope. According to the invention, performance evaluation of high-speed power line carrier communication modules produced by different manufacturers in different regions can be ensured under the same standard.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed power line carrier (HPLC) performance detection for low-voltage distribution networks, and particularly to a detection system and method for high-speed power line carrier communication modules. Background Art

[0002] In recent years, with the continuous expansion of distribution services and technological progress, the demand for efficient and stable local communication has become increasingly prominent. Especially in the field of smart grids, the development of local communication technology is directly related to the speed, reliability, and security of data transmission. Among many local communication methods, HPLC has become the mainstream choice due to its ability to transmit data based on the existing power line infrastructure. By using the power line as a communication medium, HPLC not only reduces the cost and complexity of additional wiring, but also can provide a relatively high transmission rate, meeting the requirements of modern distribution systems for real-time monitoring, data analysis, and remote control.

[0003] However, although HPLC technology has brought many conveniences to distribution services, it also faces some challenges in its application process. Currently, there is a lack of a unified detection process in the distribution professional field to standardize HPLC communication modules. As a result, when provincial companies apply them, the detection workload is large, the process is complex, and there are human operation errors. This inconsistency seriously affects the interoperability between different devices and restricts the overall effectiveness of smart grids. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a detection system and method for high-speed power line carrier communication modules, which can ensure the performance evaluation of HPLC communication modules produced by different regions and different manufacturers under the same standard.

[0005] The technical solution adopted by the present invention to solve its technical problems is: to provide a detection system for high-speed power line carrier communication modules, including:

[0006] A standard high-speed power line carrier communication module for generating a reference signal;

[0007] A spectrum analyzer connected to the high-speed power line carrier communication module to be tested and the standard high-speed power line carrier communication module respectively, for analyzing the measured signal of the high-speed power line carrier communication module to be tested and the reference signal, and recording the spectral characteristics of the measured signal and the reference signal;

[0008] An oscilloscope connected to the high-speed power line carrier communication module to be tested and the standard high-speed power line carrier communication module respectively, for collecting the time-domain waveforms of the measured signal of the high-speed power line carrier communication module to be tested and the reference signal, and analyzing the time-domain characteristics of the time-domain waveforms;

[0009] The host computer is respectively connected to the standard high-speed power line carrier communication module, the to-be-tested high-speed power line carrier communication module, the spectrum analyzer and the oscilloscope, and is used for sending test instructions to the standard high-speed power line carrier communication module and the to-be-tested high-speed power line carrier communication module, and generating a detection report according to the spectrum characteristics recorded by the spectrum analyzer and the time-domain characteristics analyzed by the oscilloscope.

[0010] The high-speed power line carrier communication module detection system further includes: a three-phase power source, which is used to provide different three-phase power supplies for the standard high-speed power line carrier communication module and the to-be-tested high-speed power line carrier communication module to simulate the actual power line environment.

[0011] The standard high-speed power line carrier communication module includes a standard high-speed power line carrier signal transmitter and a standard high-speed power line carrier signal receiver; the to-be-tested high-speed power line carrier communication module includes a to-be-tested high-speed power line carrier signal transmitter and a to-be-tested high-speed power line carrier signal receiver.

[0012] Between the standard high-speed power line carrier signal transmitter and the standard high-speed power line carrier signal receiver, and between the to-be-tested high-speed power line carrier signal transmitter and the to-be-tested high-speed power line carrier signal receiver, signal attenuators are provided, and the attenuators are used to simulate signal attenuation in power line transmission to test the communication performance of the to-be-tested high-speed power line carrier communication module under different signal strengths.

[0013] The spectrum characteristics include signal bandwidth, power spectral density and / or frequency offset.

[0014] The time-domain characteristics include the amplitude, frequency and / or phase of the signal.

[0015] The technical solution adopted by the present invention to solve its technical problems is: to provide a method for detecting a high-speed power line carrier communication module, using the above-mentioned high-speed power line carrier communication module detection system, including the following steps:

[0016] The host computer sends an initialization instruction to start the spectrum analyzer and the oscilloscope, and sets initial parameters. The standard high-speed power line carrier communication module and the to-be-tested high-speed power line carrier communication module enter the standby state and wait for test instructions;

[0017] The host computer respectively sends test instructions to the standard high-speed power line carrier communication module and the to-be-tested high-speed power line carrier communication module according to a preset test process;

[0018] After receiving the test instruction, the standard high-speed power line carrier communication module generates a reference signal; after receiving the test instruction number, the to-be-tested high-speed power line carrier communication module generates a signal under test;

[0019] The spectrum analyzer respectively performs spectrum analysis on the reference signal and the signal under test, and records the spectrum characteristics of the reference signal and the signal under test; the oscilloscope collects the time-domain waveforms of the reference signal and the signal under test, and analyzes the time-domain characteristics of the time-domain waveforms of the reference signal and the signal under test;

[0020] The upper computer collects the spectrum characteristics of the reference signal and the signal under test and the time-domain characteristics of the time-domain waveforms of the reference signal and the signal under test, and generates a detection report based on the comparison results of the spectrum characteristics of the reference signal and the signal under test, and the time-domain characteristics of the time-domain waveforms of the reference signal and the signal under test.

[0021] When the standard high-speed power line carrier communication module generates a reference signal after receiving the test instruction, and when the to-be-tested high-speed power line carrier communication module generates a signal under test after receiving the test instruction number, different three-phase power supplies are provided by a three-phase power source to simulate the actual power line environment.

[0022] When the spectrum analyzer respectively performs spectrum analysis on the reference signal and the signal under test, and when the oscilloscope collects the time-domain waveforms of the reference signal and the signal under test, an attenuator is used to simulate the signal attenuation in power line transmission to test the communication performance of the to-be-tested high-speed power line carrier communication module under different signal intensities.

[0023] Beneficial effects

[0024] Due to the adoption of the above technical solutions, compared with the prior art, the present invention has the following advantages and positive effects: The present invention integrates devices such as a spectrum analyzer, a three-phase power source, an oscilloscope, an upper computer, and a standard HPLC signal transmitter and receiver to establish a set of standardized detection processes to ensure that HPLC communication modules produced by different regions and different manufacturers can be evaluated for performance under the same standard. The present invention realizes fully automated testing through the upper computer, reduces the manual operation links, avoids test errors caused by human factors, improves the accuracy and reliability of the detection results, and greatly improves the detection efficiency and shortens the detection cycle through the automated testing system and the standardized detection process, meeting the detection requirements of a large number of HPLC communication modules. Description of the drawings

[0025] Figure 1 is a block diagram of a detection system for a high-speed power line carrier communication module according to an embodiment of the present invention;

[0026] Figure 2 It is a flowchart of the detection method for the high-speed power line carrier communication module in the embodiment of the present invention. Specific embodiments

[0027] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0028] The embodiment of the present invention relates to an HPLC communication module detection system, as Figure 1 shown, including a spectrum analyzer, an oscilloscope, a standard HPLC communication module, and a host computer.

[0029] Among them, the standard HPLC communication module is used to generate a reference signal, which is used as a reference device to conduct a comparative test with the HPLC communication module to be measured, ensuring the accuracy and reliability of the test results.

[0030] A spectrum analyzer is an electronic measuring instrument used to measure the spectral characteristics of a signal. It can convert the signal from the time domain to the frequency domain, thereby observing the frequency distribution and power spectral density of the signal. The spectrum analyzer in this embodiment is respectively connected to the HPLC communication module to be measured and the standard HPLC communication module, and is used to analyze the measured signal and the reference signal of the HPLC communication module to be measured, and record the spectral characteristics of the measured signal and the reference signal; among them, the spectral characteristics include signal bandwidth, power spectral density, and / or frequency offset.

[0031] An oscilloscope is an electronic measuring instrument used to display and analyze the waveform of an electrical signal. It can convert the electrical signal into a visual waveform diagram. The oscilloscope in this embodiment is respectively connected to the HPLC communication module to be measured and the standard HPLC communication module, and is used to collect the time-domain waveforms of the measured signal and the reference signal of the HPLC communication module to be measured, and analyze the time-domain characteristics of the time-domain waveforms; among them, the time-domain characteristics include the amplitude, frequency, and / or phase of the signal.

[0032] The host computer is respectively connected to the standard HPLC communication module, the HPLC communication module to be measured, the spectrum analyzer, and the oscilloscope, and is used to send test instructions to the standard HPLC communication module and the HPLC communication module to be measured, and generate a detection report according to the spectral characteristics recorded by the spectrum analyzer and the time-domain characteristics analyzed by the oscilloscope.

[0033] The HPLC communication module detection system of this embodiment further includes a three-phase power source, which is respectively connected to the standard HPLC communication module and the HPLC communication module to be tested, and is used to provide power for the standard HPLC communication module and the HPLC communication module to be tested. This three-phase power source can provide different three-phase power supplies to simulate the actual power line environment, so as to test the communication stability of the HPLC communication module to be tested under different voltage, frequency and load conditions.

[0034] The standard HPLC communication module of this embodiment includes a standard HPLC signal transmitter and a standard HPLC signal receiver; the HPLC communication module to be tested includes a HPLC signal transmitter to be tested and a HPLC signal receiver to be tested. Signal attenuators are provided between the standard HPLC signal transmitter and the standard HPLC signal receiver, and between the HPLC signal transmitter to be tested and the HPLC signal receiver to be tested. A signal attenuator is an electronic device used to reduce the signal amplitude. Its working principle is based on resistor voltage division or matching the terminal load impedance, and it reduces the signal amplitude by consuming part of the signal energy, so as to achieve signal attenuation. In this embodiment, this attenuator is used to simulate the signal attenuation in power line transmission to test the communication performance of the HPLC communication module to be tested under different signal strengths.

[0035] When using the HPLC communication module detection system of this embodiment to detect the HPLC communication module, as Figure 2 shown, it includes the following steps:

[0036] Step 1, the host computer sends an initialization instruction to start the spectrum analyzer and the oscilloscope, and sets the initial parameters. The standard HPLC communication module and the HPLC communication module to be tested enter the standby state and wait for the test instruction.

[0037] Step 2, the host computer sends test instructions to the standard HPLC communication module and the HPLC communication module to be tested respectively according to the preset test process; among them, the test instructions include the signal frequency range, attenuation value, power source output parameters, etc.

[0038] Step 3, after receiving the test instruction, the standard HPLC communication module generates a reference signal; after receiving the test instruction number, the HPLC communication module to be tested generates a signal to be measured. To simulate the actual power line environment, at this time, the three-phase power source can be adjusted to provide three-phase power supplies to generate different three-phase power supplies to test the communication stability under different voltage, frequency and load conditions.

[0039] Step 4: The spectrum analyzer performs spectrum analysis on the reference signal and the signal under test respectively, and records the spectral characteristics of the reference signal and the signal under test; the oscilloscope collects the time-domain waveforms of the reference signal and the signal under test, and analyzes the time-domain characteristics of the time-domain waveforms of the reference signal and the signal under test. In this step of analysis, signal attenuation in power line transmission can also be simulated through an attenuator to test the communication performance of the HPLC communication module under test at different signal strengths.

[0040] Step 5: The host computer collects the spectral characteristics of the reference signal and the signal under test and the time-domain characteristics of the time-domain waveforms of the reference signal and the signal under test, and generates a test report based on the comparison results of the spectral characteristics of the reference signal and the signal under test, and the time-domain characteristics of the time-domain waveforms of the reference signal and the signal under test.

[0041] In this step, the spectral characteristics and time-domain characteristics of the reference signal generated by the standard HPLC communication module collected are compared with the spectral characteristics and time-domain characteristics of the signal under test generated by the HPLC communication module under test to obtain a comparison result. Through this comparison result, it can be judged whether the HPLC communication module under test has the same or better communication performance and anti-interference ability as the standard HPLC communication module.

[0042] It is not difficult to find that the present invention integrates devices such as a spectrum analyzer, a three-phase power source, an oscilloscope, a host computer, and a standard HPLC signal transmitter and receiver to establish a set of standardized detection processes, ensuring that HPLC communication modules produced by different regions and different manufacturers can be evaluated for performance under the same standard. The present invention realizes fully automated testing through the host computer, reduces manual operation links, avoids test errors caused by human factors, improves the accuracy and reliability of the detection results, and greatly improves the detection efficiency and shortens the detection cycle through the automated testing system and standardized detection processes, meeting the detection requirements of a large number of HPLC communication modules.

Claims

1. A detection system for a high-speed power line carrier communication module, characterized in that, Comprising: A standard high-speed power line carrier communication module, configured to generate a reference signal; A spectrum analyzer, connected to the high-speed power line carrier communication module under test and the standard high-speed power line carrier communication module respectively, configured to analyze the signal under test of the high-speed power line carrier communication module under test and the reference signal, and record the spectral characteristics of the signal under test and the reference signal; An oscilloscope, connected to the high-speed power line carrier communication module under test and the standard high-speed power line carrier communication module respectively, configured to collect the time-domain waveforms of the signal under test of the high-speed power line carrier communication module under test and the reference signal, and analyze the time-domain characteristics of the time-domain waveforms; A host computer, connected to the standard high-speed power line carrier communication module, the high-speed power line carrier communication module under test, the spectrum analyzer and the oscilloscope respectively, configured to send test instructions to the standard high-speed power line carrier communication module and the high-speed power line carrier communication module under test, and generate a detection report according to the spectral characteristics recorded by the spectrum analyzer and the time-domain characteristics analyzed by the oscilloscope.

2. The high-speed power line carrier communication module detection system according to claim 1, wherein Further comprising: A three-phase power source, configured to provide different three-phase power supplies for the standard high-speed power line carrier communication module and the high-speed power line carrier communication module under test to simulate an actual power line environment.

3. The high-speed power line carrier communication module detection system according to claim 1, characterized in that, The standard high-speed power line carrier communication module includes a standard high-speed power line carrier signal transmitter and a standard high-speed power line carrier signal receiver; the high-speed power line carrier communication module under test includes a high-speed power line carrier signal transmitter under test and a high-speed power line carrier signal receiver under test.

4. The high-speed power line carrier communication module detection system according to claim 3, characterized in that, Signal attenuators are provided between the standard high-speed power line carrier signal transmitter and the standard high-speed power line carrier signal receiver, and between the high-speed power line carrier signal transmitter under test and the high-speed power line carrier signal receiver under test. The attenuator is configured to simulate signal attenuation in power line transmission to test the communication performance of the high-speed power line carrier communication module under test at different signal strengths.

5. The high-speed power line carrier communication module detection system according to claim 1, characterized in that The spectral characteristics include signal bandwidth, power spectral density and / or frequency offset.

6. The high-speed power line carrier communication module detection system according to claim 1, characterized in that, The time-domain characteristics include the amplitude, frequency and / or phase of the signal.

7. A detection method for a high-speed power line carrier communication module, characterized in that, Using the high-speed power line carrier communication module detection system according to any one of claims 1-6, comprising the following steps: The host computer sends an initialization instruction to start the spectrum analyzer and the oscilloscope, and sets initial parameters. The standard high-speed power line carrier communication module and the high-speed power line carrier communication module under test enter a standby state, waiting for test instructions; The host computer sends test instructions to the standard high-speed power line carrier communication module and the high-speed power line carrier communication module under test respectively according to a preset test process; After receiving the test instruction, the standard high-speed power line carrier communication module generates a reference signal; after receiving the test instruction number, the high-speed power line carrier communication module under test generates a signal under test; The spectrum analyzer respectively performs spectrum analysis on the reference signal and the signal under test, and records the spectral characteristics of the reference signal and the signal under test; the oscilloscope collects the time-domain waveforms of the reference signal and the signal under test, and analyzes the time-domain characteristics of the time-domain waveforms of the reference signal and the signal under test; The host computer collects the spectral characteristics of the reference signal and the signal under test and the time-domain characteristics of the time-domain waveforms of the reference signal and the signal under test, and generates a test report based on the comparison results of the spectral characteristics of the reference signal and the signal under test, and the time-domain characteristics of the time-domain waveforms of the reference signal and the signal under test.

8. The high-speed power line carrier communication module detection system according to claim 7, characterized in that, When the standard high-speed power line carrier communication module generates a reference signal after receiving the test instruction, and when the high-speed power line carrier communication module under test receives the test instruction number and generates a signal under test, different three-phase power supplies are provided by a three-phase power source to simulate the actual power line environment.

9. The high-speed power line carrier communication module detection system according to claim 7, wherein When the spectrum analyzer respectively performs spectrum analysis on the reference signal and the signal under test, and when the oscilloscope collects the time-domain waveforms of the reference signal and the signal under test, a signal attenuator is used to simulate signal attenuation in power line transmission to test the communication performance of the high-speed power line carrier communication module under test at different signal strengths.

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