Test method and test equipment for dual-mode communication compatible with multiple systems

Abstract

The invention belongs to the technical field of electric power communication, and particularly relates to a dual-mode communication test method and test equipment compatible with multiple systems. Comprising the following steps: 1) a test device sends detection signals of protocols of different systems to a connected to-be-tested network in sequence until communication parameter information replied to the test device by the connected to-be-tested network is received; the communication parameter information is the communication parameter information related to the protocol of the network to be tested and replied to the test equipment after the network to be tested identifies that the protocol of the detection signal is matched with the protocol of the network to be tested; 2) the test equipment adjusts communication parameter information and a protocol according to the communication parameter information replied by the connected to-be-tested network so as to communicate with the connected to-be-tested network; and 3) the test equipment sends a test signal to the connected to-be-tested network so as to test the connected to-be-tested network. According to the to-be-tested network, the protocol and communication parameters are adaptively adjusted, and compatibility of dual-mode communication tests of different systems is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of power communication, and in particular relates to a testing method and testing equipment for dual-mode communication compatible with multiple systems. Background Art

[0002] With the development of intelligent power system, high-speed power line carrier (HPLC) and high-speed radio frequency (HRF) dual-mode communication technology has been widely used. However, there are certain differences in parameter settings and network architectures between dual-mode communications of different systems. For example, the dual-mode communication test methods and systems of the Southern Power Grid system and the State Grid system are incompatible due to differences in parameter settings and network architectures, which brings many inconveniences to the equipment development, network access detection and operation and maintenance. Summary of the invention

[0003] The purpose of the present invention is to provide a dual-mode communication testing method and testing equipment compatible with multiple systems, so as to solve the technical problem in the prior art that the dual-mode communication testing methods of different systems are incompatible due to differences in different system protocols and communication parameters.

[0004] In order to solve the above technical problems, the present invention provides a test method for dual-mode communication compatible with multiple systems, comprising the following steps:

[0005] 1) The test device sequentially sends detection signals of protocols of different systems to the connected network under test until receiving communication parameter information replied by the connected network under test; the communication parameter information is the communication parameter information related to its own protocol replied to the test device by the network under test after identifying that the protocol of the detection signal matches its own protocol;

[0006] 2) The test equipment adjusts the communication parameter information and protocol according to the communication parameter information replied by the connected network to be tested, so as to communicate with the connected network to be tested;

[0007] 3) The test device sends a test signal to the connected network to be tested to test the connected network to be tested.

[0008] Furthermore, the different systems are the Southern Grid system or the State Grid system.

[0009] Furthermore, the detection signal carries an identification bit to indicate that the signal is a detection signal sent by a test device so as to be distinguished from other signals.

[0010] Furthermore, the communication parameter information replied by the network to be tested also carries the identification bit to indicate that the communication parameter information is the communication parameter information replied by the connected network to be tested, so as to be distinguished from other information.

[0011] Further, the communication parameter information includes the range of carrier frequencies, carrier modulation methods, carrier data transmission rates, radio frequency bands, radio power, and protocol verification information, and the protocol verification information is the encryption algorithm identifier of the protocol of the network under test itself.

[0012] Further, the tests performed on the dual-mode communication of the connected network under test include: high-speed power line carrier communication test, high-speed radio frequency communication test, and high-speed power line carrier and high-speed radio frequency cooperative communication test.

[0013] Further, the process of performing the high-speed power line carrier communication test includes:

[0014] The test equipment sends a test signal to the connected network under test through high-speed power line carrier and applies interference to the test signal to test the anti-interference ability of the high-speed power line carrier; the interference includes: impulse noise interference, harmonic interference, broadband interference, narrowband interference, or transient voltage fluctuation interference.

[0015] Further, the process of performing the high-speed radio frequency communication test includes: the test equipment sends a test signal to the connected network under test through high-speed radio frequency and applies interference to the test signal to test the anti-interference ability of the high-speed radio frequency; the interference includes co-frequency band interference, multipath fading interference, or broadband interference.

[0016] Further, the process of performing the high-speed power line carrier and high-speed radio frequency cooperative communication test includes: the test equipment sends a test signal to the connected network under test through the cooperation of high-speed power line carrier and high-speed radio frequency, and simultaneously applies interference to the test signals of the high-speed power line carrier and the high-speed radio frequency to perform an anti-interference test on the cooperative communication of the high-speed power line carrier and the high-speed radio frequency.

[0017] The present invention is an improved invention creation, and its beneficial effects are as follows: The test method for dual-mode communication compatible with multiple systems of the present invention, by sequentially sending detection signals of protocols of different systems to the connected network under test, can send detection signals of the same protocol as the network under test for different systems. Thus, after the network under test recognizes the detection signal, it returns communication parameter information to the test equipment; the test equipment adjusts the communication parameter information and protocol according to the communication parameter information returned by the connected network under test to communicate with the connected network under test, and realizes the communication test of the network under test. Through the above method, the communication capabilities of networks under test of different systems can be tested, and the protocol and communication parameters are adaptively adjusted according to the network under test, realizing the compatibility of dual-mode communication tests of different systems.

[0018] To solve the above technical problems, the present invention also provides a test device for dual-mode communication compatible with multiple systems, including a test terminal. The test terminal includes a processor, and the processor is configured to implement the method steps described in the test method for dual-mode communication compatible with multiple systems of the present invention when executing a computer program.

[0019] The present invention is an improved invention, and its beneficial effects are the same as those of the test method for dual-mode communication compatible with multiple systems of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the test device for dual-mode communication compatible with multiple systems of the present invention and its connection relationship;

[0021] Figure 2 is a flowchart of the test terminal of the present invention adjusting its own protocol and communication parameters according to the protocol and communication parameters of the network under test. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The inventive concept of the present invention is as follows: By sequentially sending probe signals of different system protocols to the connected network under test, the present invention can send probe signals with the same protocol as the network under test for different systems. After the network under test recognizes the probe signal, it replies with communication parameter information to the test terminal. The test terminal adjusts the communication parameter information and protocol according to the communication parameter information replied by the connected network under test to communicate with the connected network under test, realizing the communication test of the network under test, and thus realizing the compatibility of dual-mode communication tests for different systems.

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Embodiment of the test device for dual-mode communication compatible with multiple systems:

[0025] A test device for dual-mode communication compatible with multiple systems of the present invention, as Figure 1 shown, the test device includes a test terminal, a signal generator, and a spectrum analyzer. The test terminal includes a High-Power Line Carrier (HPLC) module and a High-Speed Radio Frequency (HRF) module. The signal generator should be able to generate various types of standard test signals, such as signals with different frequencies, amplitudes, and modulation methods, to comprehensively test the performance of the HPLC link. The spectrum analyzer monitors the influence of interference signals on the HRF signal. The test terminal includes a processor, and the processor is configured to implement the test method for dual-mode communication compatible with multiple systems of the present invention when executing a computer program.

[0026] The processor can be a microprocessor MCU, a Field-Programmable Gate Array (FPGA), or other processing devices.

[0027] Before the test, it is necessary to first establish a test environment, configure the test equipment, and connect the test terminals to the network to be tested respectively. In this embodiment, the network to be tested takes the dual-mode communication simulation network of Southern Power Grid and State Grid as an example, and the test equipment and its connection relationship are as Figure 1 shown. Connect and calibrate the signal generator and spectrum analyzer according to the standard test specifications to ensure their measurement accuracy and stability. The test terminal is connected to the dual-mode communication simulation network of State Grid and Southern Power Grid through a specially designed interface conversion module, and the simulation network should be able to accurately simulate the network characteristics and service scenarios in the actual power grid.

[0028] The test method for dual-mode communication compatible with multiple systems of the present invention includes the following steps:

[0029] Step 1: The test terminals of the test equipment sequentially send detection signals constructed based on the detection protocol frameworks of different systems to the network to be tested connected thereto, so as to identify the communication protocol and communication parameters of the network to be tested, and adapt their own communication parameters according to the identification results.

[0030] As Figure 2 shown, it specifically includes the following steps:

[0031] 1.1. The test terminal sends a detection signal constructed based on the detection protocol framework of the Southern Power Grid system to the network to be tested connected thereto.

[0032] The detection signal constructed based on the detection protocol framework of the Southern Power Grid system can be recognized by the dual-mode communication network of the Southern Power Grid.

[0033] If the network to be tested connected is the dual-mode communication network of the Southern Power Grid, when receiving this detection signal, it can recognize that the protocol of this detection signal matches its own protocol, and reply its own communication parameter information to the communication terminal based on its own protocol (Southern Power Grid protocol). After the communication terminal receives this communication parameter information, it enters step 1.3.

[0034] The communication parameter information includes the carrier frequency range, carrier modulation method, carrier data transmission rate, radio frequency band, radio frequency power, and additional information related to the protocol (also called protocol verification information). The protocol verification information is the encryption algorithm identifier of the protocol of the network to be tested itself, and for the Southern Power Grid protocol, it is the special verification information in the Southern Power Grid protocol.

[0035] If the network to be tested connected is the dual-mode communication network of the State Grid, when receiving this detection signal, it cannot be recognized and cannot send communication parameter information to the test terminal. At this time, it enters step 1.2.

[0036] 1.2. The test terminal sends a detection signal constructed based on the detection protocol framework of the State Grid system to the network to be tested connected thereto.

[0037] The detection signal constructed based on the detection protocol framework of the State Grid system can be recognized by the dual-mode communication network of the State Grid.

[0038] If the network under test connected is a dual-mode communication network of the State Grid, when receiving this detection signal, it can recognize the detection signal and reply with its own communication parameter information to the communication terminal based on its own protocol (State Grid protocol). After receiving this communication parameter information, the communication terminal enters step 1.3.

[0039] The communication parameter information includes the carrier frequency range, modulation mode, data transmission rate, radio frequency band, power, and additional information related to the protocol (also known as protocol verification information). The protocol verification information is the encryption algorithm identifier of the protocol of the network under test. For the State Grid protocol, it is the encryption algorithm identifier in the State Grid protocol.

[0040] 1.3. The test terminal adjusts its own communication parameter settings according to the received communication parameter information and adjusts the protocol processing module of the test terminal itself.

[0041] For example, if it is recognized as a State Grid network, it is set according to the specific carrier frequency range, modulation mode, and corresponding encryption algorithm requirements stipulated by the State Grid; if it is a Southern Power Grid network, the corresponding parameter configuration and special verification processing method of the Southern Power Grid are used for setting.

[0042] The parameter adjustment algorithm of the processor of the test equipment should be fast and accurate, capable of completing the update of parameter configuration within a short time after receiving the parameter information, and at the same time quickly switching and adapting to the protocol requirements of the corresponding network, such as loading the corresponding encryption and decryption algorithm libraries, verification algorithm modules, etc.

[0043] In this embodiment, first send a detection signal constructed based on the detection protocol framework of the Southern Power Grid system. If the network under test connected does not reply, then send a detection signal constructed based on the detection protocol framework of the State Grid system. In other embodiments, it can also be to first send a detection signal constructed based on the detection protocol framework of the State Grid system. If the network under test connected does not reply, then send a detection signal constructed based on the detection protocol framework of the Southern Power Grid system.

[0044] In this embodiment, the detection signal has a specific identification bit, and the specific identification bit is used to indicate that this signal is the detection signal sent by the test terminal to distinguish it from clutter signals.

[0045] In this embodiment, the communication parameter information replied by the network under test connected also has the same specific identification bit as the detection signal to indicate that this information is the communication parameter information replied to the test terminal.

[0046] Step two: According to the set protocol and parameter information, send a standard test signal to the network under test connected to test the dual-mode communication of the network under test connected.

[0047] 2.1. Conduct communication tests under normal circumstances for high-speed power line carrier (HPLC), radio frequency (HRF), and the coordinated communication of high-speed power line carrier and high-speed radio frequency.

[0048] 2.1.1. Communication test for high-speed power line carrier (HPLC).

[0049] After setting the protocol and parameter information, the signal generator of the test equipment injects standard test signals into the HPLC module of the test terminal. Under different load and channel conditions, the test terminal processes the signal transmission and respectively collects the signal characteristics at the sending end and the receiving end, including signal strength, signal-to-noise ratio, bit error rate, etc. By comparing the data at the sending end and the receiving end, the transmission performance indicators of the HPLC link, such as transmission efficiency, attenuation characteristics, etc., are calculated to determine whether they meet the respective performance standard requirements of the State Grid and the Southern Power Grid. During this process, by leveraging the understanding of different protocols, an adaptive data parsing module is adopted for the differences in the data frame structure in the HPLC link between the State Grid and the Southern Power Grid to improve the accuracy of data collection and analysis. For example, the valid data segment is quickly located according to the specific identification field in the data frame of the State Grid protocol, and intelligent boundary recognition is performed on the variable-length data frame structure in the Southern Power Grid protocol.

[0050] The signal generator of the test equipment should be able to generate various types of standard test signals, such as signals with different frequencies, amplitudes, and modulation methods, to comprehensively test the performance of the HPLC link.

[0051] 2.1.2. Communication test for high-speed radio frequency (HRF).

[0052] Start the HRF module of the test terminal to send test signals. Under specific test scenarios, such as different distances, occlusion conditions, etc., use the spectrum analyzer of the test equipment to monitor the emission spectrum characteristics of the HRF signal. At the same time, collect the received HRF data at the receiving end and analyze performance parameters such as the accuracy, stability, and packet loss rate of its data transmission to evaluate the performance of the HRF link in the dual-mode applications of the State Grid and the Southern Power Grid. By leveraging the compatibility of the different processing mechanisms of the HRF protocols of the Southern Power Grid and the State Grid in frequency band switching strategies and power control methods, the test terminal can flexibly adjust the parameters of the HRF module in different network environments. For example, follow the specific frequency band avoidance rules of the State Grid network for communication tests, and optimize the transmission power according to the power dynamic adjustment specifications of the Southern Power Grid in the Southern Power Grid network, thereby enhancing the comprehensiveness and effectiveness of the test.

[0053] During the HRF communication test, the test scenario should be representative. For example, different distance intervals (from short to long) and different types of obstacles (such as walls, metal obstacles, etc.) should be set to simulate various situations in actual applications. The spectrum analyzer should be able to monitor the spectrum changes of HRF signals in real time. The HRF module of the test terminal should be able to flexibly adjust working parameters according to the requirements of different network protocols for frequency band switching and power control. For example, when conducting a scanning test within the frequency band range specified by the State Grid, it should follow its power limit and adjustment specifications, and in the South Grid environment, it should optimize the test according to the frequency band allocation and power management strategy of the South Grid.

[0054] 2.1.3. Coordination communication test of high-speed power line carrier and high-speed radio frequency.

[0055] Simulate actual power grid service application scenarios, such as power meter reading, load control, etc., so that the HPLC and HRF modules of the test terminal work simultaneously and cooperate to send test signals for data interaction and transmission. Monitor the timeliness of dual-mode switching, the coherence of data transmission, and the accuracy of service execution throughout the process, and verify whether the dual-mode cooperation can meet the relevant requirements of the State Grid and the South Grid under different service loads and network conditions. Due to compatibility with different protocols, the test terminal can accurately simulate the actual service process based on the service priority settings and dual-mode switching trigger condition differences under different networks. For example, the State Grid may have higher dual-mode switching priority requirements for the power load control service under a specific protocol, and the test terminal can accurately follow such rules for switching tests during the test to ensure the reliability and efficiency of the service.

[0056] In the dual-mode cooperation test, the simulated power service application scenarios should cover common service types of the State Grid and the South Grid, and the trigger conditions, switching time, and coherence of data transmission of dual-mode switching should be monitored in real time during the test. For example, when the HPLC link fails or its performance deteriorates, the test terminal should be able to promptly switch to the HRF link for data transmission and smoothly switch back to the HPLC link after the link is restored to ensure that the service is not affected. During this process, based on the service priority and switching rule differences under different network protocols, the test terminal accurately simulates the actual service process, records and analyzes each link of service execution in detail. For example, in the scenario where the State Grid power meter reading service and the South Grid load control service are running simultaneously, allocate dual-mode resources according to the requirements of their respective protocols and monitor the service execution effect.

[0057] 2.2. Conduct anti-interference tests on high-speed power line carrier (HPLC), radio frequency (HRF), and the coordination communication of high-speed power line carrier and high-speed radio frequency under interference conditions.

[0058] 2.2.1. Anti-interference test for high-speed power line carrier.

[0059] The test equipment sends a test signal to the connected network to be tested through a high-speed power line carrier, and interferes with the test signal to test the anti-interference ability of the high-speed power line carrier. In the HPLC link of the test terminal, various types of interference signals are introduced by a signal generator. In this embodiment, the interference signal includes pulse noise, narrowband interference, broadband interference, etc. The intensity, frequency and other parameters of the interference signal can be set according to the typical interference situation in the actual power grid environment. In the case of interference, the test terminal continues to transmit data, collects data from the transmitter and the receiver, and calculates indicators such as bit error rate and signal attenuation change. Compare the performance indicators when there is no interference, and evaluate the resistance of the HPLC link to different interferences under the State Grid and Southern Grid protocols. For example, for the HPLC link of the State Grid, narrowband interference is applied on a specific carrier frequency to observe the stability and bit error rate changes of its data transmission. At the same time, the same intensity of interference is used in the HPLC link of the Southern Grid for testing, and the anti-interference differences between the two are analyzed to determine whether the test terminal can maintain reliable communication under the requirements of the respective power grid protocols.

[0060] With the popularity of electric vehicles, the demand for charging electric vehicles is increasing. During the charging process of electric vehicles, different types of interference will be generated on the high-speed power line carrier communication of the power grid. In this embodiment, anti-interference tests are mainly performed on these interferences.

[0061] During the charging process of electric vehicles, the switching operation of the charging pile (such as starting and stopping charging) will generate instantaneous pulse noise. This noise is characterized by suddenness, high amplitude and short duration. In addition, pulse noise will have a significant impact on power line carrier communication (HPLC), which may increase the bit error rate of data transmission and even cause communication interruption.

[0062] Electric vehicle charging equipment (such as charging piles) is a nonlinear load that generates a large amount of harmonics in the power grid. These harmonics are mainly concentrated in the low frequency band (such as integer multiples of 50Hz), which may interfere with the carrier frequency of power line carrier communication. Harmonic interference will cause the signal quality of power line carrier communication to deteriorate, increase signal attenuation and bit error rate.

[0063] During the charging process of electric vehicles, the power converter of the charging equipment will generate broadband noise with a wide frequency range, which may cover the frequency band of power line carrier communication. Broadband noise will interfere with power line carrier communication and wireless radio frequency communication (HRF), resulting in signal quality degradation and unstable data transmission.

[0064] During the charging process of electric vehicles, grid voltage may experience transient fluctuations, especially during high-power charging. Such fluctuations are random and instantaneous. Transient voltage fluctuations can affect the signal stability of power line carrier communication and may cause data transmission errors or interruptions.

[0065] Based on the above analysis, the interference signals in this embodiment include: pulse noise interference, harmonic interference, broadband interference, narrowband interference and transient voltage fluctuation interference.

[0066] 2.2.2. Anti-interference test for high-speed wireless radio frequency.

[0067] The test equipment sends a test signal to the connected network under test through high-speed wireless radio frequency, and interferes with the test signal to test the anti-interference ability of the high-speed wireless radio frequency. For HRF links, interference includes setting different interference scenarios, such as co-band interference sources or multipath fading interference. Use a spectrum analyzer to monitor the impact of interference signals on HRF signals, collect data at the receiving end and analyze parameters such as packet loss rate and signal quality. Under different HRF protocol environments of State Grid and Southern Grid, the performance of the test terminal under these interference conditions is tested separately. For example, a co-band interference source is set in the State Grid HRF frequency band, and the test terminal responds to interference according to the frequency band switching strategy and power control method of the State Grid to evaluate its anti-interference effect; multipath fading interference test is carried out in the Southern Grid HRF frequency band, and the anti-interference ability of the test terminal is analyzed according to the protocol characteristics of the Southern Grid, and the anti-interference difference of HRF dual-mode under the two power grid modes is compared.

[0068] In the HRF interference test, for the setting of the interference source in the same frequency band, it is necessary to ensure that the signal strength, frequency and other parameters of the interference source can be accurately adjusted. When monitoring the impact of the interference signal on the HRF signal, the spectrum analyzer must be able to clearly display the changes in the signal spectrum. In the multipath fading interference test scenario, different reflectors and propagation paths are set to simulate the multipath effect in the actual environment. The test terminal adjusts the transmission power, frequency band and other parameters to deal with interference according to the protocol requirements of the Southern Grid or the State Grid, and records the packet loss rate and signal quality parameter changes during data transmission in detail.

[0069] During the charging process of electric vehicles, the power converter of the charging equipment will generate broadband noise with a wide frequency range, which may cover the frequency band of power line carrier communication. Broadband noise will interfere with power line carrier communication and wireless radio frequency communication (HRF), resulting in signal quality degradation and unstable data transmission. Therefore, the interference in the anti-interference test of high-speed wireless radio frequency can also be broadband noise interference (also called broadband interference).

[0070] 2.2.3. Dual-mode collaborative anti-interference test for high-speed power line carrier and high-speed wireless radio frequency.

[0071] The test equipment sends test signals to the connected network under test through high-speed power line carrier and high-speed wireless radio frequency, and interferes with the test signals of high-speed power line carrier and high-speed wireless radio frequency at the same time to perform anti-interference test on the cooperative communication of high-speed power line carrier and high-speed wireless radio frequency. In the simulation of actual power grid business scenarios, interference is applied to HPLC and HRF links at the same time to observe the working condition of the dual-mode switching mechanism in the interference environment. For example, when the HPLC link is severely interfered and the performance is degraded, whether the test terminal can switch to the HRF link in time to maintain the normal operation of the business, and whether the accuracy and consistency of data transmission can be guaranteed during and after the switching process. Analyze the difference in the effect of dual-mode collaborative anti-interference under different protocols of State Grid and Southern Grid, and evaluate the ability of the test terminal to meet the business needs of two power grids in a complex interference environment.

[0072] During the dual-mode collaborative anti-interference test, the interference intensity and type imposed on the HPLC and HRF links must be precisely controlled to simulate a complex actual interference environment. Observe various indicators of the test terminal during the dual-mode switching process, such as whether the switching time is within the specified range, whether the data transmission accuracy before and after the switching meets the requirements, etc., and compare the performance differences under the State Grid and Southern Grid protocols.

[0073] Step 4: Result analysis and report generation.

[0074] Based on the test data and results of the above steps, and in accordance with the preset evaluation standards, a comprehensive analysis is conducted on the compatibility and performance of the test terminal in the dual-mode communication of the State Grid and the Southern Grid. A detailed test report is generated, which clearly indicates the specific data of the test terminal in each test, whether it has passed the corresponding standards, and the existing problems and improvement suggestions, so as to provide a strong basis for equipment research and development, optimization and network access certification. In the result analysis stage, by utilizing the deep compatibility with different protocols, a multi-dimensional comparative analysis of the test data can be conducted to explore the potential differences and optimization directions of equipment performance under different protocols, such as comparing the differences in resource allocation efficiency of the same test terminal under the State Grid and Southern Grid protocols when working in dual-mode collaboration, providing data support for the subsequent customized optimization of equipment for different power grids.

[0075] During the results analysis and report generation phase, scientific and reasonable evaluation standards should be adopted, such as setting qualified thresholds for various performance indicators based on relevant technical specifications and industry standards of the State Grid and Southern Grid. The test report should adopt a standardized format, and the content should be detailed, accurate, and easy to read, so that relevant personnel can quickly understand the performance status and existing problems of the test terminal. During the analysis process, in-depth exploration of the differences and commonalities of test data under different protocols, such as comparing the differences in resource utilization of dual-mode collaboration in the State Grid and Southern Grid protocols under the same test conditions, provides targeted suggestions and directions for further optimization and adaptation of equipment.

[0076] Implementation method of testing dual-mode communication compatible with multiple systems:

[0077] The testing method for dual-mode communication of multiple systems of the present invention is as described in the implementation of the testing equipment for dual-mode communication compatible with multiple systems. The process, principle, etc. of the method have been introduced in detail in the implementation of the testing equipment for dual-mode communication, and will not be repeated in this implementation.

[0078] In summary, the test method and test equipment for dual-mode communication compatible with multiple systems of the present invention ensure that the detection signals of the networks to be tested of different systems can be sent by sending the detection signals of the protocols of different systems to the connected networks to be tested in turn, and realize the compatibility of the test method and equipment for dual-mode communication of multiple systems, and can test the communication protocols of the State Grid and the Southern Grid, and can more comprehensively evaluate the anti-interference performance of dual-mode communication in different network environments, and ensure the accuracy and reliability of the test results. The cost and time cycle of equipment research and development, network access detection, and operation and maintenance are reduced.

[0079] Furthermore, the detection signal sent by the test device of the present invention carries a specific identification bit, which can indicate that the signal is a detection signal and distinguish it from a clutter signal, thereby ensuring that the network to be tested receives and recognizes it and then responds.

[0080] Furthermore, the communication parameter information replied by the network also carries the identification bit to indicate that the communication parameter information is the communication parameter information replied by the connected network to be tested, so as to ensure that the test equipment can identify it.

Claims

1. A test method for dual-mode communication compatible with multiple systems, characterized in that, It includes the following steps: 1) The test device sequentially sends detection signals of protocols of different systems to the connected network under test until it receives the communication parameter information replied by the connected network under test; the communication parameter information is the communication parameter information related to its own protocol replied by the network under test after identifying that the protocol of the detection signal matches its own protocol; 2) The test device adjusts the communication parameter information and protocol according to the communication parameter information replied by the connected network under test to communicate with the connected network under test; 3) The test device sends a test signal to the connected network under test to test the connected network under test.

2. The test method for dual-mode communication compatible with multiple systems according to claim 1, wherein, The different systems are the Southern Power Grid system or the State Grid system.

3. The test method for dual-mode communication compatible with multiple systems according to claim 1 or 2, characterized in that, The detection signal carries an identification bit to indicate that the signal is a detection signal sent by the test device so as to distinguish it from other signals.

4. The test method for dual-mode communication compatible with multiple systems according to claim 3, characterized in that, The communication parameter information replied by the network under test also carries the identification bit to indicate that the communication parameter information is the communication parameter information replied by the connected network under test so as to distinguish it from other information.

5. The test method for dual-mode communication compatible with multiple systems according to claim 1, wherein The communication parameter information includes the range of carrier frequency, carrier modulation method, carrier data transmission rate, wireless frequency band, wireless power, and protocol verification information, and the protocol verification information is the encryption algorithm identifier of the protocol of the network under test itself.

6. The test method for dual-mode communication compatible with multiple systems according to claim 1 or 2, characterized in that The test on the dual-mode communication of the connected network under test includes: high-speed power line carrier communication test, high-speed radio frequency communication test, and high-speed power line carrier and high-speed radio frequency collaborative communication test.

7. The test method for dual-mode communication compatible with multiple systems according to claim 6, characterized in that, The process of conducting the high-speed power line carrier communication test includes: The test device sends a test signal to the connected network under test through high-speed power line carrier and applies interference to the test signal to test the anti-interference ability of the high-speed power line carrier; the interference includes: impulse noise interference, harmonic interference, broadband interference, narrowband interference, or transient voltage fluctuation interference.

8. The test method for dual-mode communication compatible with multiple systems according to claim 6, wherein, The process of conducting the high-speed radio frequency communication test includes: The test device sends a test signal to the connected network under test through high-speed radio frequency and applies interference to the test signal to test the anti-interference ability of the high-speed radio frequency; the interference includes co-frequency band interference, multipath fading interference, or broadband interference.

9. The test method for dual-mode communication compatible with multiple systems according to claim 6, wherein The process of conducting the high-speed power line carrier and high-speed radio frequency collaborative communication test includes: The test device sends a test signal to the connected network under test through the collaboration of high-speed power line carrier and high-speed radio frequency, and simultaneously applies interference to the test signals of the high-speed power line carrier and high-speed radio frequency to conduct an anti-interference test on the collaborative communication of the high-speed power line carrier and high-speed radio frequency.

10. A test device for dual-mode communication compatible with multiple systems, characterized in that, It includes a test terminal, and the test terminal includes a processor, and the processor is used to implement the test method for dual-mode communication compatible with multiple systems as described in any one of claims 1-9 when executing a computer program.

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