Power supply test system and method

Abstract

The present application relates to the technical field of power supply test, particularly to a power supply test system and method, comprising a host computer main station and at least one test slave station wirelessly connected through a radio frequency communication link; the host computer main station is used for generating test instructions and modulating the test instructions into radio frequency signals for transmission through the first radio frequency transceiver module integrated therein; the test slave station is internally integrated with a second radio frequency transceiver module, a master control module and a plurality of functional test modules; the second radio frequency transceiver module is used for receiving radio frequency signals and demodulating them into test instructions, and is also used for modulating test data into radio frequency signals and transmitting them back to the host computer main station; the master control module is connected with the second radio frequency transceiver module and the plurality of functional test modules. The present application successfully solves the pain points of poor flexibility, susceptibility to interference and complex wiring during multi-device parallel test of the traditional wired test system through the organic combination of wireless radio frequency communication and hardware anti-interference design.

Description

Technical Field

[0001] This invention relates to the field of power supply testing technology, and in particular to a power supply testing system and method. Background Technology

[0002] In the R&D, production, and quality inspection of power supply products, automated testing systems are crucial for ensuring product quality and production efficiency. Traditional automated testing systems generally use wired communication methods, such as RS-232, RS-485, CAN bus, or Ethernet, to connect the host computer to various test slave stations distributed at the testing site. This wired architecture exposes a series of inherent defects in practical applications: First, the cost of laying a large number of communication and power cables is high, and the cables themselves are prone to wear and aging, while connectors are susceptible to loosening and corrosion, leading to reduced reliability and increased maintenance workload in the long-term operation of the system. Second, the length of the physical cables limits the flexibility of test slave station placement. In application scenarios such as multi-station production lines and large environmental test chambers, the equipment layout is rigid, and system expansion and reconfiguration are extremely inconvenient. Third, complex cable bundles are prone to introducing electromagnetic interference in high-voltage, high-current power supply testing environments, affecting the accuracy of test data.

[0003] Furthermore, as the number of test units increases, the wiring complexity caused by wired connections grows exponentially. Dense wiring within the cabinet not only increases installation difficulty but also hinders troubleshooting. Therefore, there is an urgent need for a new power supply test system architecture that can overcome the limitations of wired systems and offer greater flexibility, reliability, and scalability. Summary of the Invention

[0004] To address the aforementioned issues, this invention combines wireless radio frequency communication with hardware anti-interference design, successfully resolving the pain points of traditional wired test systems, such as poor flexibility, susceptibility to interference, and complex wiring during parallel testing of multiple devices. It provides a power supply test system and method that offers a flexible, stable, reliable, efficient, and easily expandable power supply test solution.

[0005] The technical solution adopted in this invention is as follows: a power supply testing system, comprising a host computer master station and at least one test slave station wirelessly connected via an RF communication link; the host computer master station is used to generate test commands and modulate the test commands into RF signals for transmission through a first RF transceiver module integrated within it; the test slave station integrates a second RF transceiver module, a main control module, and multiple functional test modules; the second RF transceiver module is used to receive RF signals and demodulate them back to the test commands, and is also used to modulate test data into RF signals and send them back to the host computer master station; the main control module is connected to the second RF transceiver module and the multiple functional test modules, and is used to parse the test commands and control the corresponding functional test modules to execute corresponding test functions; the multiple functional test modules are used to connect to the power supply under test and perform at least one of power detection, load simulation, protocol interaction, and protection function testing.

[0006] The radio frequency communication link operates in a specific industrial, scientific, and medical frequency band. Both the host computer master station and the test slave station have integrated electromagnetic shielding covers on their radio frequency transceiver modules. The electromagnetic shielding covers only have interfaces reserved for antenna connection.

[0007] A further improvement to the above scheme is that there are multiple test slave stations, each of which has a unique network identifier; the radio frequency signal emitted by the host computer master station includes the target slave station identifier, and the second radio frequency transceiver module of each test slave station is configured to respond only to radio frequency signals that match its own identifier, thereby realizing the addressing and grouping control of multiple test slave stations by the host computer master station.

[0008] A further improvement to the above scheme is that it also includes a system synchronization base station, which is connected to the host computer master station via wired or wireless means and periodically broadcasts a global synchronization signal; the second radio frequency transceiver module of each of the test slave stations is also used to receive the global synchronization signal, and the master control module calibrates the local clock based on the global synchronization signal so that the test actions of the multiple test slave stations are synchronized with the instruction transmission of the host computer master station in the time domain, thereby avoiding radio frequency channel access conflicts.

[0009] A further improvement to the above scheme is that the functional testing module includes a power parameter sampling module, a programmable load module, a fast charging protocol simulation and monitoring module, and a protection function triggering and recording module; the power parameter sampling module is used to collect the original voltage and current waveform data of the AC input and / or DC output of the power supply under test; the programmable load module is used to simulate the dynamic load characteristics from no-load to overload according to the test command; the fast charging protocol simulation and monitoring module is used to simulate the handshake negotiation between the power device and the power supply under test under various fast charging protocols, and monitor the data packets during the communication process; the protection function triggering and recording module is used to simulate short circuit, overvoltage, and overcurrent faults under the control of the main control module, and record the protection response time and status of the power supply under test.

[0010] A further improvement to the above scheme is that the test slave station also integrates a data preprocessing module. The data preprocessing module is connected between the power parameter sampling module and the main control module. It is used to perform real-time filtering, RMS value calculation, ripple extraction, and power calculation on the collected raw voltage and current waveform data, and send the processed result data to the main control module. The main control module then packages the data and sends it through the second radio frequency transceiver module, thereby reducing the amount of raw data transmitted through the radio frequency communication link.

[0011] A further improvement to the above scheme is that the host computer master station also includes a test sequence generator and an adaptive scheduling engine; the test sequence generator is used to generate a sequence containing multiple test steps based on the test items configured by the user; the adaptive scheduling engine is used to dynamically adjust the parameters or execution order of subsequent test steps according to the real-time test data received from the test slave station during the test process.

[0012] A further improvement to the above scheme is that the test slave station adopts a modular plug-in card structure for packaging and is connected to the main control module and the second RF transceiver module through a unified backplane bus; the functional test module exists in the form of a hot-swappable function card, and different types of functional test modules can be selected and combined for installation according to test requirements.

[0013] A further improvement to the above scheme is that the host computer is also connected to a database server to store all test instructions, raw data, processed result data, and test reports; the database server also provides a web-based access interface for remotely querying test history and generating statistical charts.

[0014] A power supply testing method based on the power supply testing system, the method comprising the following steps:

[0015] Step S1: Generate a test command sequence for a specific power supply under test through the host computer. Step S2: The test command sequence is modulated onto the radio frequency carrier by the first radio frequency transceiver module and transmitted through the antenna; Step S3: Receive the radio frequency signal through the second radio frequency transceiver module of the target test slave station, and obtain the test command sequence after demodulation; Step S4: The main control module parses the test instruction sequence and controls the corresponding functional test modules to execute the test functions in sequence; Step S5: The power supply under test is tested through the functional test module, and test data is collected. Step S6: The test data is modulated into an RF signal via the second RF transceiver module and sent back to the host computer main station through the main control module; Step S7: Receive and process the test data through the host computer, and generate a test result report.

[0016] A further improvement to the above scheme is that, before step S2, a channel sensing step is also included: Before the predetermined transmission time slot, the host computer first uses the first radio frequency transceiver module to listen to whether the target radio frequency channel is idle. If the channel is idle, transmit radio frequency signals immediately; If the channel is busy, a random backoff algorithm is executed, and the channel will wait for a period of time before listening again. The test instruction sequence includes a frame verification sequence for verifying data integrity; the main control module performs verification before parsing the instruction, and if the verification fails, it sends a retransmission request signal to the host computer master station through the second radio frequency transceiver module.

[0017] The beneficial effects of this invention are: Compared to existing power supply testing methods, this invention uses a radio frequency communication link operating in specific industrial and medical frequency bands to connect the host computer master station and the test slave station, eliminating the cumbersome wired connections (such as RS485, Ethernet, etc.) of traditional testing systems. This avoids the costs and high maintenance difficulties associated with long-distance cable laying, and also frees the test slave station from the constraints of physical cable length, allowing for flexible distribution according to the testing environment (such as large aging chambers, multi-station production lines), facilitating system networking and workstation planning. The wireless connection also avoids contact problems caused by loose, worn, or corroded cable connectors, improving connection reliability from a physical perspective. Both the host computer master station and the test slave station's radio frequency transceiver modules are externally equipped with integrated electromagnetic shielding covers, with only necessary antenna interfaces reserved on the shielding covers. This effectively isolates the internal radio frequency circuits from high-intensity external electromagnetic noise interference, while also suppressing the impact of electromagnetic radiation generated by the radio frequency modules during operation on other external precision measurement modules. Each test slave station integrates a main control module and multiple functional test modules, forming a fully functional intelligent test node. The main control module can locally parse and execute instructions from the host computer, controlling the functional modules to complete tests and preprocess data, reducing the computational burden on the host computer and realizing distributed processing. It supports multiple test slave stations working in parallel, allowing the host computer master station to simultaneously initiate tests on multiple power supplies under test, significantly improving overall test throughput. The wired connection method eliminates significant costs associated with purchasing communication cables and connectors, as well as installation time. The modular design makes the test slave station structure compact and easy to maintain. This invention, through the organic combination of wireless radio frequency communication and hardware anti-interference design, successfully solves the pain points of traditional wired test systems, such as poor flexibility, susceptibility to interference, and complex wiring during parallel testing of multiple devices, providing a flexible, stable, reliable, efficient, and easily expandable power supply testing solution.

[0018] The power supply testing method based on the aforementioned power supply testing system modulates the test command sequence into radio frequency signals for wireless transmission, which are then received and decoded by the test slave stations. Test personnel do not need to be physically present at each test station or handle complex cable connections; they can remotely start, control, and monitor the entire testing process via a host computer. This simplifies the operation steps, reduces the risk of human error, and effectively ensures operator safety, especially when testing power supplies under high voltage, high current, or harsh environments (such as high / low temperatures or noise). This invention does not have the host computer directly controlling all test details; instead, the tasks of parsing the test command sequence and driving the functional modules are delegated to the main control modules of each test slave station. Each test slave station becomes an intelligent node, capable of autonomously completing a series of complex test steps. This reduces the computational burden on the host computer, enabling it to manage multiple slave station parallel tasks more efficiently. After test data is collected at the slave station, it is also wirelessly transmitted back to the host computer via the radio frequency link. The bidirectional transparent data channel allows the host computer to obtain the remote test status and raw or pre-processed data in real time, achieving full-process visual monitoring of the testing process. All data is centrally stored and processed, facilitating comprehensive analysis, historical data comparison, and the generation of detailed test reports. This provides a comprehensive and timely data foundation for product performance evaluation, fault diagnosis, and quality control. Through a closed-loop process of wireless command issuance, distributed intelligent execution, wireless data transmission, and centralized processing, this invention successfully achieves remote, automated, intelligent, and networked power supply testing, effectively improving testing efficiency, consistency, security, and overall system flexibility. Attached Figure Description

[0019] Figure 1 This is a connection diagram of the power supply testing system of the present invention; Figure 2 for Figure 1 A connection diagram of another implementation of the power supply testing system; Figure 3 for Figure 1 A connection diagram of another implementation of the power supply testing system; Figure 4 for Figure 1 A connection diagram of the power supply test module in the power supply test system; Figure 5 This is a flowchart illustrating the power supply testing method of the present invention.

[0020] Figure labeling: Host computer master station 1, first RF transceiver module 11, test sequence generator 12, adaptive scheduling engine 13, database server 14, test slave station 2, second RF transceiver module 21, main control module 22, functional test module 23, power parameter sampling module 231, programmable load module 232, fast charging protocol simulation and monitoring module 233, protection function triggering and recording module 234, data preprocessing module 24, system synchronization base station 3. Detailed Implementation

[0021] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0024] like Figures 1-4 As shown, in one embodiment of the present invention, a power supply testing system is provided, including a host computer master station 1 and at least one test slave station 2 wirelessly connected via an RF communication link; the host computer master station 1 is used to generate test commands and modulate the test commands into RF signals for transmission through a first RF transceiver module 11 integrated within it; the test slave station 2 integrates a second RF transceiver module 21, a main control module 22, and multiple functional test modules 23; the second RF transceiver module 21 is used to receive RF signals and demodulate them back to the test commands, and is also used to modulate test data into RF signals and send them back to the host computer master station 1; the main control module 22 is connected to the second RF transceiver module 21 and the multiple functional test modules 23, and is used to parse the test commands and control the corresponding functional test modules 23 to execute corresponding test functions; the multiple functional test modules 23 are used to connect to the power supply under test and perform at least one of power detection, load simulation, protocol interaction, and protection function testing.

[0025] The radio frequency communication link operates in a specific industrial, scientific, and medical frequency band. Both the host computer master station 1 and the test slave station 2 have integrated electromagnetic shielding covers on their radio frequency transceiver modules. The electromagnetic shielding covers only have interfaces reserved for antenna connection.

[0026] This embodiment connects the host computer master station 1 and the test slave station 2 using a radio frequency communication link operating in specific industrial and medical frequency bands, eliminating the need for complex wired connections (such as RS485, Ethernet, etc.) in traditional test systems. This avoids the costs and high maintenance difficulties associated with long-distance cable laying, and allows the placement of the test slave station 2 to be flexible according to the physical cable length, based on the test environment (such as large aging chambers, multi-station production lines), facilitating system networking and workstation planning. The wireless connection also avoids contact problems caused by loose, worn, or corroded cable connectors, improving connection reliability at the physical level. Both the host computer master station 1 and the test slave station 2 have integrated electromagnetic shielding covers externally, with only necessary antenna interfaces reserved on the shields. This effectively isolates the internal radio frequency circuits from high-intensity external electromagnetic noise interference, while also suppressing the impact of electromagnetic radiation generated by the radio frequency modules on other precision measurement modules. Each test slave station 2 integrates a main control module 22 and various functional test modules 23, forming a fully functional intelligent test node. The main control module 22 can locally parse and execute instructions from the host computer, control the functional modules to complete tests and preprocess data, reducing the computational burden on the host computer and realizing distributed processing of computing. It supports multiple test slave stations 2 working in parallel, and the host computer master station 1 can simultaneously initiate tests on multiple power supplies under test, greatly improving the overall test throughput. The wired connection method saves a significant amount of procurement costs and installation time for communication cables and connectors. The modular design makes the test slave station 2 compact and easy to maintain. This embodiment, through the organic combination of wireless radio frequency communication and hardware anti-interference design, successfully solves the pain points of traditional wired test systems, such as poor flexibility, susceptibility to interference, and complex wiring during parallel testing of multiple devices, providing a power supply testing solution that is flexible in layout, stable and reliable, efficient, and easily expandable.

[0027] There are multiple test slave stations 2, each with a unique network identifier. The radio frequency signal emitted by the host computer master station 1 includes the target slave station identifier. The second radio frequency transceiver module 21 of each test slave station 2 is configured to respond only to radio frequency signals matching its own identifier, thereby enabling the host computer master station 1 to address and group multiple test slave stations 2. This embodiment achieves efficient and accurate management and collaborative control of multiple slave stations by configuring a unique network identifier for each test slave station 2 and embedding the target identifier in the communication frame. This allows a single host computer master station 1 to establish an orderly data link with numerous distributed test slave stations 2 in a shared radio frequency channel through a one-to-one directional communication method. Each slave station only responds to instructions matching its own identifier, effectively avoiding possible instruction mis-triggering and channel resource waste in broadcast or multicast modes, ensuring accurate delivery and execution of test instructions.

[0028] The system also includes a system synchronization base station 3, which is connected to the host computer master station 1 via wired or wireless means and periodically broadcasts a global synchronization signal. The second RF transceiver module 21 of each of the test slave stations 2 is also used to receive the global synchronization signal. The main control module 22 calibrates its local clock based on the global synchronization signal to ensure that the test actions of the multiple test slave stations 2 are synchronized in the time domain with the command transmission of the host computer master station 1, avoiding RF channel access conflicts. This embodiment provides a high-precision time reference for the distributed wireless power supply test system through the system synchronization base station 3 and the broadcast of the global synchronization signal, fundamentally solving the clock drift problem in multi-device collaboration and ensuring the overall time domain consistency of the system. Each test slave station 2 calibrates its local clock by receiving the synchronization signal, ensuring that the initiation time and sampling interval of its test actions are highly synchronized with the command transmission rhythm of the host computer master station 1. The synchronization mechanism not only effectively avoids data packet conflicts (i.e., multiple access problems) caused by multiple slave stations attempting to access the radio frequency channel within similar time periods, thus improving the utilization and reliability of wireless communication links, but more importantly, it provides technical support for test items that require strict timing coordination (such as the precise measurement of time parameters in multi-channel power supply parallel current sharing tests and dynamic response tests).

[0029] The functional testing module 23 includes a power parameter sampling module 231, a programmable load module 232, a fast charging protocol simulation and monitoring module 233, and a protection function triggering and recording module 234. The power parameter sampling module 231 collects the raw waveform data of the AC input and / or DC output voltage and current of the power supply under test. The programmable load module 232 simulates dynamic load characteristics from no-load to overload according to the test instructions. The fast charging protocol simulation and monitoring module 233 simulates handshake negotiation between the power supply under test and the device using various fast charging protocols, and monitors data packets during communication. The protection function triggering and recording module 234 simulates short-circuit, overvoltage, and overcurrent faults under the control of the main control module 22, and records the protection response time and status of the power supply under test. This embodiment, by integrating four core functional modules—power parameter sampling, programmable load, fast charging protocol simulation and monitoring, and protection function triggering and recording—greatly enriches the test coverage and depth of the power supply testing system, achieving comprehensive and automated verification of the performance of modern power supply products. The power parameter sampling module 231 can capture the raw waveforms of voltage and current, providing first-hand data for analyzing dynamic response and ripple noise; the programmable load module 232 can accurately simulate complex load changes in the real world, testing the power supply's load-carrying capacity and stability; the fast charging protocol module is designed for current mainstream fast charging technologies, automating the testing of protocol compatibility and communication reliability; the protection function module can safely and repeatedly verify whether the power supply's protection mechanism is timely and effective under various fault conditions.

[0030] The test slave station 2 also integrates a data preprocessing module 24, which is connected between the power parameter sampling module 231 and the main control module 22. This module performs real-time filtering, RMS value calculation, ripple extraction, and power calculation on the acquired raw voltage and current waveform data. The processed data is then sent to the main control module 22, which packages it and transmits it via the second RF transceiver module 21, thereby reducing the amount of raw data transmitted through the RF communication link. This embodiment, by integrating the data preprocessing module 24 into the test slave station 2, introduces the concept of "edge computing" into the power supply testing field, effectively optimizing the bandwidth utilization of the system's wireless communication link and improving overall response efficiency. It can process massive amounts of raw voltage and current waveform data in real time at the data acquisition source, completing high-frequency, high-computational tasks such as filtering, RMS value calculation, ripple extraction, and power calculation. After preprocessing, only the extracted key result data (such as effective voltage value, maximum current value, peak ripple value, power value, etc.) need to be transmitted to the host computer via wireless link. Compared with transmitting the original waveform data, the amount of data to be transmitted is reduced by several orders of magnitude.

[0031] The host computer 1 also includes a test sequence generator 12 and an adaptive scheduling engine 13. The test sequence generator 12 is used to generate a sequence containing multiple test steps based on user-configured test items. The adaptive scheduling engine 13 is used to dynamically adjust the parameters or execution order of subsequent test steps during the test process based on the real-time test data received from the test slave station 2. This embodiment upgrades the power supply test system from a traditional "fixed process automation" to an adaptive test platform with "intelligent decision-making capabilities" by integrating the test sequence generator 12 and the adaptive scheduling engine 13 into the host computer 1. The adaptive scheduling engine 13 can dynamically analyze and judge the test process based on the intermediate result data transmitted back from the test slave station 2 in real time. For example, if the result of a certain test item has obviously exceeded the standard, the engine can decide to skip subsequent related unnecessary tests, directly execute the fault diagnosis steps or terminate the test, saving time; if a parameter is found to be in a critical state, the stress conditions of subsequent test steps can be dynamically adjusted (such as increasing the load current or extending the test time) to conduct more rigorous verification.

[0032] Test station 2 adopts a modular plug-in card structure and is connected to the main control module 22 and the second RF transceiver module 21 through a unified backplane bus. The functional test modules 23 exist in the form of hot-swappable function cards, and different types of functional test modules 23 can be selected and combined according to test requirements. This embodiment, by adopting a modular plug-in card structure and a unified backplane bus design, endows the power supply test system with extremely high flexibility, scalability, and maintainability, perfectly adapting to the challenges of rapid iteration of power supply technology and diversified test requirements. Different functional test modules 23 (such as power sampling cards, programmable load cards, fast charging protocol cards, etc.) exist in the form of standardized function cards. Users can freely select and combine the required functional modules according to the type of power supply under test and the test outline, like building blocks, to quickly construct the most suitable test station, avoiding idle and wasted resources.

[0033] The host computer 1 is also connected to a database server 14, which stores all test instructions, raw data, processed result data, and test reports. The database server 14 also provides a web-based access interface for remotely querying test history and generating statistical charts. This embodiment, by introducing a database server 14 and a web-based access interface, constructs a complete data management and remote interaction system, greatly improving the management efficiency and value extraction capabilities of test data. All instructions, raw data, results, and reports generated during the testing process are centrally and securely stored in the database, forming a traceable and auditable complete data chain, providing valuable data assets for product quality analysis, process improvement, and reliability research.

[0034] like Figures 1-5 As shown, a power supply testing method based on the power supply testing system includes the following steps: Step S1, generating a test command sequence for a specific power supply under test through the host computer master station 1; Step S2, modulating the test command sequence onto a radio frequency carrier through the first radio frequency transceiver module 11 and transmitting it through an antenna; Step S3, receiving radio frequency signals through the second radio frequency transceiver module 21 of the target test slave station 2, demodulating them to obtain the test command sequence; Step S4, parsing the test command sequence through the main control module 22 and controlling the corresponding functional test modules 23 to execute test functions in sequence; Step S5, testing the power supply under test through the functional test modules 23 and collecting test data; Step S6, modulating the test data into a radio frequency signal through the second radio frequency transceiver module 21 and sending it back to the host computer master station 1 through the main control module 22; Step S7, receiving and processing the test data through the host computer master station 1 and generating a test result report.

[0035] This embodiment modulates the test command sequence into radio frequency signals for wireless transmission, which are then received and decoded by the test slave station 2. Test personnel do not need to be physically present at each test station or handle complex cable connections; they can remotely start, control, and monitor the entire test process via the host computer master station 1. This simplifies the operation steps, reduces the risk of human error, and effectively ensures the personal safety of operators, especially when testing power supplies under high voltage, high current, or harsh environments (such as high and low temperatures, noise). This invention does not have the host computer directly controlling all test details; instead, the task of parsing the test command sequence and driving the functional modules is delegated to the main control module 22 of each test slave station 2. Each test slave station 2 becomes an intelligent node, capable of autonomously completing a series of complex test steps. This reduces the computational burden on the host computer, enabling it to manage multiple slave station parallel tasks more efficiently. After the test data is collected at the slave station, it is also wirelessly transmitted back to the host computer via the radio frequency link. The bidirectional transparent data channel allows the host computer to obtain the remote test status and raw or pre-processed data in real time, achieving full-process visual monitoring of the test process. Centralized storage and processing of all data facilitates comprehensive analysis, historical data comparison, and the generation of detailed test reports, providing a comprehensive and timely data foundation for product performance evaluation, fault diagnosis, and quality control. This embodiment successfully achieves remote, automated, intelligent, and networked power supply testing through a closed-loop process of wireless command issuance, distributed intelligent execution, wireless data backhaul, and centralized processing, effectively improving testing efficiency, consistency, security, and overall system flexibility.

[0036] Before step S2, a channel sensing step is also included: Before the predetermined transmission time slot, the host computer 1 first uses the first radio frequency transceiver module 11 to listen to whether the target radio frequency channel is idle. If the channel is idle, transmit radio frequency signals immediately; If the channel is busy, a random backoff algorithm is executed, and the system waits for a period of time before listening again.

[0037] This embodiment improves the communication reliability and overall system performance of the power supply test system in scenarios with multiple slave stations and high-density deployments by adding a channel listening step before the transmission command. Specifically, this step enables the host computer master station 1 to proactively sense the busy / idle status of the target channel before transmission, and only transmit data when the channel is idle. This mechanism avoids data packet conflicts and collisions that may be caused by multiple test slave stations 2 or other wireless devices from the source, significantly reducing the bit error rate and retransmission probability of command transmission, and ensuring the timeliness and accuracy of test command issuance. By introducing a random backoff algorithm, a fair and efficient conflict resolution scheme is provided for nodes in the system that may have multiple competing channels, preventing the channel from entering a congested state due to continuous conflicts.

[0038] The test command sequence includes a frame verification sequence for verifying data integrity. The main control module 22 performs verification before parsing the command. If verification fails, it sends a retransmission request signal to the host computer 1 via the second RF transceiver module 21. This embodiment enhances the data communication reliability and command execution accuracy of the power supply test system in complex industrial wireless environments by embedding a frame verification sequence in the test command sequence and performing the verification process before parsing. Specifically, this mechanism enables the main control module 22 to effectively identify transmission errors caused by electromagnetic interference, multipath fading, or data packet collisions, preventing erroneous commands from being mis-parsed and executed at the source, thereby preventing interference with subsequent test processes and even the risk of misoperation of the power supply under test. If verification fails, the system immediately triggers an automatic retransmission request mechanism, requesting the host computer to resend the command via the wireless link, ensuring the complete and error-free delivery of critical test commands.

[0039] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A power supply testing system, characterized in that: It includes a host computer master station and at least one test slave station wirelessly connected via a radio frequency communication link; The host computer is used to generate test commands and modulate the test commands into radio frequency signals for transmission through its internally integrated first radio frequency transceiver module. The test slave station integrates a second RF transceiver module, a main control module, and multiple functional test modules. The second RF transceiver module receives RF signals and demodulates them back to the test commands, and also modulates test data into RF signals to send back to the host computer. The main control module is connected to the second RF transceiver module and the multiple functional test modules, and is used to parse the test commands and control the corresponding functional test modules to execute the corresponding test functions. The multiple functional test modules are used to connect to the power supply under test and perform at least one of power detection, load simulation, protocol interaction, and protection function tests. The radio frequency communication link operates in a specific industrial, scientific, and medical frequency band. Both the host computer master station and the test slave station have integrated electromagnetic shielding covers on their radio frequency transceiver modules. The electromagnetic shielding covers only have interfaces reserved for antenna connection.

2. The power supply testing system according to claim 1, characterized in that: There are multiple test slave stations, each with a unique network identifier. The radio frequency signal emitted by the host computer master station includes the target slave station identifier. The second radio frequency transceiver module of each test slave station is configured to respond only to radio frequency signals that match its own identifier, thereby enabling the host computer master station to address and group the multiple test slave stations.

3. The power supply testing system according to claim 1, characterized in that: It also includes a system synchronization base station, which is connected to the host computer master station via wired or wireless means and periodically broadcasts a global synchronization signal; the second radio frequency transceiver module of each of the test slave stations is also used to receive the global synchronization signal, and the master control module calibrates the local clock based on the global synchronization signal so that the test actions of the multiple test slave stations are synchronized with the command transmission of the host computer master station in the time domain to avoid radio frequency channel access conflicts.

4. The power supply testing system according to claim 1, characterized in that: The functional testing module includes a power parameter sampling module, a programmable load module, a fast charging protocol simulation and monitoring module, and a protection function triggering and recording module. The power parameter sampling module is used to collect the original voltage and current waveform data of the AC input and / or DC output of the power supply under test. The programmable load module is used to simulate the dynamic load characteristics from no-load to overload according to the test instructions. The fast charging protocol simulation and monitoring module is used to simulate the handshake negotiation between the power supply under test and the device under test under various fast charging protocols, and to monitor the data packets during the communication process. The protection function triggering and recording module is used to simulate short circuit, overvoltage, and overcurrent faults under the control of the main control module, and to record the protection response time and status of the power supply under test.

5. The power supply testing system according to claim 4, characterized in that: The test slave station also integrates a data preprocessing module, which is connected between the power parameter sampling module and the main control module. This module is used to perform real-time filtering, RMS value calculation, ripple extraction, and power calculation on the collected raw voltage and current waveform data, and send the processed result data to the main control module. The main control module then packages the data and sends it through the second RF transceiver module, thereby reducing the amount of raw data transmitted through the RF communication link.

6. The power supply testing system according to claim 1, characterized in that: The host computer also includes a test sequence generator and an adaptive scheduling engine; the test sequence generator is used to generate a sequence containing multiple test steps based on the test items configured by the user. The adaptive scheduling engine is used to dynamically adjust the parameters or execution order of subsequent test steps based on the real-time test data received from the test slave during the test process.

7. The power supply testing system according to claim 1, characterized in that: The test slave station is packaged with a modular plug-in card structure and is connected to the main control module and the second RF transceiver module through a unified backplane bus; the functional test module exists in the form of a hot-swappable function card, and different types of functional test modules can be selected and combined according to test requirements.

8. The power supply testing system according to claim 1, characterized in that: The host computer is also connected to a database server, which stores all test instructions, raw data, processed result data, and test reports. The database server also provides a web-based access interface for remotely querying test history and generating statistical charts.

9. A power supply testing method based on the power supply testing system according to any one of claims 1 to 8, characterized in that, The method includes the following steps: Step S1: Generate a test command sequence for a specific power supply under test through the host computer. Step S2: The test command sequence is modulated onto the radio frequency carrier by the first radio frequency transceiver module and transmitted through the antenna; Step S3: Receive the radio frequency signal through the second radio frequency transceiver module of the target test slave station, and obtain the test command sequence after demodulation; Step S4: The main control module parses the test instruction sequence and controls the corresponding functional test modules to execute the test functions in sequence; Step S5: The power supply under test is tested through the functional test module, and test data is collected. Step S6: The test data is modulated into an RF signal via the second RF transceiver module and sent back to the host computer main station through the main control module; Step S7: Receive and process the test data through the host computer, and generate a test result report.

10. The power supply testing method according to claim 9, characterized in that: Before step S2, a channel sensing step is also included: Before the predetermined transmission time slot, the host computer first uses the first radio frequency transceiver module to listen to whether the target radio frequency channel is idle. If the channel is idle, transmit radio frequency signals immediately; If the channel is busy, a random backoff algorithm is executed, and the channel will wait for a period of time before listening again. The test instruction sequence includes a frame verification sequence for verifying data integrity; the main control module performs verification before parsing the instruction, and if the verification fails, it sends a retransmission request signal to the host computer master station through the second radio frequency transceiver module.

Images