Quality test bench and test method for frequency converter production and processing

Abstract

The invention relates to the technical field of frequency converter detection, in particular to a quality test board for frequency converter production and processing and a test method, an interface management module automatically identifies and manages interface connection, the problem of inaccurate data caused by misplug or misconnection is avoided, and the test safety is enhanced at the same time. The test execution module covers multiple aspects of performance test, protection function test, communication test, load simulation test and the like. The data acquisition module acquires key parameters in real time and provides detailed data support for subsequent analysis. And the data analysis module quickly identifies abnormal conditions and generates a test report through preprocessing, anomaly detection and performance evaluation. The fault diagnosis module can quickly identify fault types, accurately position fault positions, provide repair suggestions and shorten maintenance time. Therefore, the problem of inaccurate detection data of the frequency converter caused by misplug or misconnection when a tester repeatedly executes interface plugging operation is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of frequency converter detection, and particularly to a quality test bench and a test method for the production and processing of frequency converters. Background Art

[0002] As the core control device of modern industrial automation, the technical architecture of the frequency converter deeply integrates frequency conversion technology, microelectronics technology, and power electronics control theory. This device realizes precise control of the speed, torque, and operating state of AC motors by intelligently adjusting the working power frequency of the motors. Its hardware system consists of precision components such as a rectification unit, a filtering circuit, an inverter module, a braking unit, a driving unit, a detection unit, and a microprocessing unit, and integrates multiple safety protection mechanisms such as overcurrent, overvoltage, and overload protection, showing extremely high application value in the fields of industrial automation, new energy, intelligent manufacturing, etc.

[0003] With the increase in the complexity of industrial systems, the importance of the frequency converter testing link has become increasingly prominent. However, the traditional testing mode has significant operation bottlenecks: when testers repeatedly perform interface plugging and unplugging operations, inaccurate frequency converter detection data may be caused by incorrect plugging or connection. Summary of the Invention

[0004] The purpose of the present invention is to provide a quality test bench and a test method for the production and processing of frequency converters, aiming to solve the problem that inaccurate frequency converter detection data may be caused by incorrect plugging or connection when testers repeatedly perform interface plugging and unplugging operations.

[0005] To achieve the above purpose, in the first aspect, the present invention provides a quality test bench for the production and processing of frequency converters, including an interface management module, a test execution module, an automatic control module, a data acquisition module, a data analysis module, and a fault diagnosis module. The interface management module, the test execution module, the data acquisition module, and the data analysis module are connected in sequence. The automatic control module is connected to the test execution module and the data analysis module, and the fault diagnosis module is connected to the data analysis module;

[0006] The interface management module is used to automatically identify and manage the interface connection of the frequency converter;

[0007] The test execution module is used to perform performance tests and protection function tests;

[0008] The automatic control module is used to control the test process;

[0009] The data acquisition module is used to collect the current, voltage, and temperature parameters of the frequency converter during operation in real time;

[0010] The data analysis module analyzes and judges the collected data, identifies abnormal situations and generates test reports;

[0011] The fault diagnosis module is used to diagnose the faults occurring during the testing of the frequency converter and provide the fault causes and solutions.

[0012] Among them, the interface management module includes an interface identification unit, a connection management unit, an error detection unit and an interface configuration unit, and the interface identification unit, the connection management unit, the error detection unit and the interface configuration unit are connected in sequence;

[0013] The interface identification unit is used to automatically identify the interface type of the frequency converter and ensure correct connection through hardware and software protocol matching;

[0014] The connection management unit is used for the automatic control of plugging and unplugging operations and the real-time monitoring of the connection status;

[0015] The error detection unit is used to detect problems such as misinsertion, wrong connection or poor contact during the interface connection process and issue an alarm;

[0016] The interface configuration unit automatically configures the interface parameters according to the model of the frequency converter and the test requirements.

[0017] Among them, the test execution module includes a performance test unit, a protection function test unit, a communication test unit and a load simulation unit;

[0018] The performance test unit is used to test the output frequency, voltage and current performance parameters of the frequency converter;

[0019] The protection function test unit is used to verify whether the overcurrent, overvoltage and overload protection functions of the frequency converter work properly;

[0020] The communication test unit tests the stability of the communication interface of the frequency converter and the accuracy of data transmission;

[0021] The load simulation unit tests the performance of the frequency converter under actual working conditions by simulating different load conditions.

[0022] Among them, the automatic control module includes a process control unit, an instruction generation unit, a status monitoring unit and an exception handling unit, the process control unit is connected to the instruction generation unit, and the status monitoring unit is connected to the exception handling unit;

[0023] The process control unit is used for the automatic scheduling of the entire test process;

[0024] The instruction generation unit is used to generate specific control instructions according to the test requirements and send them to the corresponding devices;

[0025] The state monitoring unit is used to monitor the operating states of the frequency converter and the test equipment in real time;

[0026] The exception handling unit is used to automatically pause the test and trigger the corresponding handling mechanism when an exception is detected during the test.

[0027] Among them, the data acquisition module includes a current acquisition unit, a voltage acquisition unit, and a temperature acquisition unit;

[0028] The current acquisition unit is used to acquire the waveform and value of the output current of the frequency converter in real time;

[0029] The voltage acquisition unit is used to acquire the waveform and value of the output voltage of the frequency converter in real time;

[0030] The temperature acquisition unit is used to monitor the temperature of the internal components of the frequency converter.

[0031] Among them, the data analysis module includes a data preprocessing unit, an anomaly detection unit, a performance evaluation unit, and a report generation unit, and the data preprocessing unit, the anomaly detection unit, the performance evaluation unit, and the report generation unit are connected in sequence;

[0032] The data preprocessing unit is used to clean, filter, and normalize the acquired raw data to remove noise and outliers;

[0033] The anomaly detection unit identifies anomalies in the data by setting thresholds;

[0034] The performance evaluation unit quantitatively evaluates the performance of the frequency converter according to the test standards and design specifications;

[0035] The report generation unit organizes the analysis results into a test report, including performance indicators, anomalies, and improvement suggestions.

[0036] In a second aspect, a quality test method for the production and processing of a frequency converter, which is used for the quality test bench for the production and processing of the frequency converter described in the first aspect, includes the following steps:

[0037] Automatically identify and connect the interfaces through the interface management module;

[0038] Comprehensively test parameters such as the output frequency, voltage, and current of the frequency converter;

[0039] Test the protection functions such as overcurrent, overvoltage, and overload of the frequency converter;

[0040] Utilize the data acquisition and analysis module to monitor the operating state of the frequency converter in real time;

[0041] Locate the problems existing in the frequency converter through the fault diagnosis module.

[0042] A quality test bench for the production and processing of frequency converters according to the present invention includes an interface management module, a test execution module, an automatic control module, a data acquisition module, a data analysis module, and a fault diagnosis module. The interface management module, the test execution module, the data acquisition module, and the data analysis module are connected in sequence. The automatic control module is connected to the test execution module and the data analysis module. The fault diagnosis module is connected to the data analysis module. The interface management module is used to automatically identify and manage the interface connections of the frequency converter. The test execution module is used to execute performance tests and protection function tests. The automatic control module is used to control the test process. The data acquisition module is used to collect the current, voltage, and temperature parameters during the operation of the frequency converter in real time. The data analysis module analyzes and judges the collected data, identifies abnormal situations, and generates a test report. The fault diagnosis module is used to diagnose the faults occurring during the test of the frequency converter and provide the fault causes and solutions. Through modular design and automatic control, the present invention effectively solves the operation bottleneck in the traditional test mode, significantly improves the accuracy, efficiency, and comprehensiveness of the test. The interface management module automatically identifies and manages the interface connections, avoiding inaccurate data caused by incorrect insertion or connection, and enhancing the safety of the test at the same time. The automatic control module realizes the automatic scheduling of the test process, reduces manual operations, and improves the test efficiency. The test execution module covers multiple aspects such as performance tests, protection function tests, communication tests, and load simulation tests, comprehensively evaluating the performance and functions of the frequency converter. The data acquisition module collects key parameters in real time, providing detailed data support for subsequent analysis. The data analysis module quickly identifies abnormal situations and generates a test report through preprocessing, anomaly detection, and performance evaluation. The fault diagnosis module can quickly identify the fault type, accurately locate the fault position, and provide repair suggestions, shortening the repair time. Thus, it solves the problem that the test data of the frequency converter may be inaccurate due to incorrect insertion or connection when the tester repeatedly performs interface plugging and unplugging operations. Description of the Drawings

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0044] Figure 1 It is a schematic diagram of a quality test bench for the production and processing of frequency converters provided by the present invention.

[0045] Figure 2 It is a schematic diagram of the interface management module.

[0046] Figure 3 It is a schematic diagram of the test execution module.

[0047] Figure 4 It is a schematic diagram of the automatic control module.

[0048] Figure 5 It is a schematic diagram of the data acquisition module.

[0049] Figure 6 It is a schematic diagram of the data analysis module.

[0050] Figure 7 It is a schematic diagram of the fault diagnosis module.

[0051] Figure 8 It is a flowchart of a quality test method for the production and processing of an inverter provided by the present invention.

[0052] In the figure: 1 - interface management module, 2 - test execution module, 3 - automatic control module, 4 - data acquisition module, 5 - data analysis module, 6 - fault diagnosis module, 11 - interface identification unit, 12 - connection management unit, 13 - error detection unit, 14 - interface configuration unit, 21 - performance test unit, 22 - protection function test unit, 23 - communication test unit, 24 - load simulation unit, 31 - process control unit, 32 - instruction generation unit, 33 - status monitoring unit, 34 - exception handling unit, 41 - current acquisition unit, 42 - voltage acquisition unit, 43 - temperature acquisition unit, 51 - data preprocessing unit, 52 - anomaly detection unit, 53 - performance evaluation unit, 54 - report generation unit, 61 - fault identification unit, 62 - fault location unit, 63 - fault repair suggestion unit, 64 - historical data comparison unit. Detailed implementation manners

[0053] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0054] Please refer to Figures 1 to 7, the present invention provides a quality test bench for the production and processing of frequency converters, including an interface management module 1, a test execution module 2, an automation control module 3, a data acquisition module 4, a data analysis module 5, and a fault diagnosis module 6. The interface management module 1, the test execution module 2, the data acquisition module 4, and the data analysis module 5 are connected in sequence. The automation control module 3 is connected to the test execution module 2 and the data analysis module 5. The fault diagnosis module 6 is connected to the data analysis module 5;

[0055] The interface management module 1 is used to automatically identify and manage the interface connections of the frequency converter;

[0056] The test execution module 2 is used to execute performance tests and protection function tests;

[0057] The automation control module 3 is used to control the test process;

[0058] The data acquisition module 4 is used to collect the current, voltage, and temperature parameters of the frequency converter during operation in real time;

[0059] The data analysis module 5 analyzes and judges the collected data, identifies abnormal situations, and generates test reports;

[0060] The fault diagnosis module 6 is used to diagnose the faults that occur during the test of the frequency converter and provide the fault causes and solutions.

[0061] In this embodiment, through modular design and automation control, the present invention effectively solves the operation bottleneck in the traditional test mode, significantly improves the accuracy, efficiency, and comprehensiveness of the test. The interface management module 1 automatically identifies and manages the interface connections, avoiding inaccurate data caused by incorrect insertion or connection, and enhancing the safety of the test at the same time. The automation control module 3 realizes the automatic scheduling of the test process, reduces manual operations, and improves the test efficiency. The test execution module 2 covers multiple aspects such as performance tests, protection function tests, communication tests, and load simulation tests, comprehensively evaluating the performance and functions of the frequency converter. The data acquisition module 4 collects key parameters in real time, providing detailed data support for subsequent analysis. The data analysis module 5 quickly identifies abnormal situations and generates test reports through preprocessing, anomaly detection, and performance evaluation. The fault diagnosis module 6 can quickly identify the fault type, accurately locate the fault position, and provide repair suggestions, shortening the repair time. Thus, it solves the problem that the test data of the frequency converter may be inaccurate due to incorrect insertion or connection when the tester repeatedly performs interface plugging and unplugging operations.

[0062] Further, the interface management module 1 includes an interface identification unit 11, a connection management unit 12, an error detection unit 13, and an interface configuration unit 14, which are connected in sequence;

[0063] The interface identification unit 11 is used to automatically identify the interface type of the frequency converter and ensure correct connection through hardware and software protocol matching;

[0064] The connection management unit 12 is used for automatic control of plugging and unplugging operations and real-time monitoring of the connection status;

[0065] The error detection unit 13 is used to detect problems such as incorrect insertion, wrong connection, or poor contact during the interface connection process and issue an alarm;

[0066] The interface configuration unit 14 automatically configures interface parameters according to the model of the frequency converter and the test requirements.

[0067] In this embodiment, the test bench first automatically detects the interface type (electrical interface, communication interface, etc.) of the frequency converter through the interface identification unit 11 and ensures the correctness of the interface connection through hardware and software protocol matching. After the interface identification is completed, the connection management unit 12 is responsible for automatically completing the plugging and unplugging operations and real-time monitoring of the connection status to ensure the stability of the interface connection. If problems such as incorrect insertion, wrong connection, or poor contact are detected during the connection process, the error detection unit 13 will immediately issue an alarm and pause the subsequent test process. According to the model of the frequency converter and the test requirements, the interface configuration unit 14 automatically adjusts the interface parameters to ensure that the test environment matches the operating conditions of the frequency converter.

[0068] Further, the test execution module 2 includes a performance test unit 21, a protection function test unit 22, a communication test unit 23, and a load simulation unit 24;

[0069] The performance test unit 21 is used to test the output frequency, voltage, and current performance parameters of the frequency converter;

[0070] The protection function test unit 22 is used to verify whether the overcurrent, overvoltage, and overload protection functions of the frequency converter are working properly;

[0071] The communication test unit 23 tests the stability of the communication interface of the frequency converter and the accuracy of data transmission;

[0072] The load simulation unit 24 tests the performance of the frequency converter under actual working conditions by simulating different load conditions.

[0073] In this embodiment, the performance test unit 21 tests performance parameters such as the output frequency, voltage, and current of the frequency converter to ensure that they meet the design specifications. The protection function test unit 22 verifies whether the protection functions such as overcurrent, overvoltage, and overload of the frequency converter are working properly to ensure the safety of the frequency converter under abnormal conditions. The communication test unit 23 tests the stability and data transmission accuracy of the communication interface (such as RS485, CAN, etc.) of the frequency converter to ensure the normal communication function. The load simulation unit 24 tests the performance of the frequency converter under actual working conditions by simulating different load conditions (light load, heavy load, sudden load, etc.).

[0074] Further, the automatic control module 3 includes a process control unit 31, an instruction generation unit 32, a status monitoring unit 33, and an exception handling unit 34. The process control unit 31 is connected to the instruction generation unit 32, and the status monitoring unit 33 is connected to the exception handling unit 34;

[0075] The process control unit 31 is used for the automatic scheduling of the entire test process;

[0076] The instruction generation unit 32 is used to generate specific control instructions according to the test requirements and send them to the corresponding devices;

[0077] The status monitoring unit 33 is used to monitor the operating status of the frequency converter and the test equipment in real time;

[0078] The exception handling unit 34 is used to automatically pause the test and trigger the corresponding handling mechanism when an exception is detected during the test.

[0079] In this embodiment, the process control unit 31 of the automatic control module 3 schedules the entire test process according to the test requirements to ensure that each test unit is executed in sequence. The instruction generation unit 32 generates specific control instructions according to the test requirements and sends them to the corresponding test equipment (such as the load simulator, power supply module, etc.). The status monitoring unit 33 monitors the operating status of the frequency converter and the test equipment in real time to ensure the stability and safety of the test process. If the exception handling unit 34 detects an exception (such as voltage overlimit, current anomaly, etc.) during the test, the exception handling unit 34 will automatically pause the test and trigger the corresponding handling mechanism (alarm, record abnormal data, etc.).

[0080] Further, the data acquisition module 4 includes a current acquisition unit 41, a voltage acquisition unit 42, and a temperature acquisition unit 43;

[0081] The current acquisition unit 41 is used to collect the waveform and value of the output current of the frequency converter in real time;

[0082] The voltage acquisition unit 42 is used to collect the waveform and value of the output voltage of the frequency converter in real time;

[0083] The temperature acquisition unit 43 is used to monitor the temperature of the internal components of the frequency converter.

[0084] In this embodiment, the current acquisition unit 41 collects the waveform and value of the output current of the frequency converter in real time for evaluating the current stability. The voltage acquisition unit 42 collects the waveform and value of the output voltage of the frequency converter in real time to ensure that the voltage is within the designed range. The temperature acquisition unit 43 monitors the temperature of the key internal components (such as power modules and radiators) of the frequency converter to ensure that the frequency converter operates within a safe temperature range.

[0085] Furthermore, the data analysis module 5 includes a data preprocessing unit 51, an anomaly detection unit 52, a performance evaluation unit 53, and a report generation unit 54, and the data preprocessing unit 51, the anomaly detection unit 52, the performance evaluation unit 53, and the report generation unit 54 are connected in sequence;

[0086] The data preprocessing unit 51 is used to clean, filter, and normalize the collected raw data to remove noise and outliers;

[0087] The anomaly detection unit 52 identifies abnormal situations in the data by setting thresholds;

[0088] The performance evaluation unit 53 quantitatively evaluates the performance of the frequency converter according to the test standards and design indicators;

[0089] The report generation unit 54 organizes the analysis results into a test report, including performance indicators, abnormal situations, and improvement suggestions.

[0090] In this embodiment, the data preprocessing unit 51 cleans, filters, and normalizes the collected raw data to remove noise and outliers to ensure the accuracy of the data. The anomaly detection unit 52 identifies abnormal situations in the data by setting thresholds (upper and lower limits of current, voltage, and temperature) and records the abnormal data. The performance evaluation unit 53 quantitatively evaluates the performance of the frequency converter according to the test standards and design indicators to generate a performance score. The report generation unit 54 organizes the analysis results into a test report, including performance indicators, abnormal situations, and improvement suggestions.

[0091] Furthermore, the fault diagnosis module 6 includes a fault identification unit 61, a fault location unit 62, a fault repair suggestion unit 63, and a historical data comparison unit 64. The fault identification unit 61, the fault location unit 62, and the fault repair suggestion unit 63 are connected in sequence, and the historical data comparison unit 64 is connected to the fault identification unit 61;

[0092] The fault identification unit 61 quickly identifies the possible fault types of the frequency converter through data analysis and pattern matching;

[0093] The fault location unit 62 accurately locates the specific location where the fault occurs by combining the circuit topology of the frequency converter and the test data;

[0094] The fault repair suggestion unit 63 generates detailed repair suggestions according to the fault type and location, including replacing components and adjusting parameters;

[0095] The historical data comparison unit 64 compares the current fault data with the historical fault data to assist in diagnosing and predicting potential problems.

[0096] In this embodiment, the fault identification unit 61 quickly identifies the possible fault types (such as overheating, short circuit, communication fault, etc.) of the frequency converter through data analysis and pattern matching. The fault location unit 62 accurately locates the specific location where the fault occurs (such as the power module, drive circuit, etc.) by combining the circuit topology of the frequency converter and the test data. The fault repair suggestion unit 63 generates detailed repair suggestions according to the fault type and location, including replacing components, adjusting parameters, etc. The historical data comparison unit 64 compares the current fault data with the historical fault data to assist in diagnosing and predicting potential problems and provide a reference for subsequent improvement.

[0097] Please refer to Figure 8 , in the second aspect, a quality test method for the production and processing of a frequency converter, which is used for the quality test bench for the production and processing of the frequency converter described in the first aspect, includes the following steps:

[0098] S1 realizes the automatic identification and connection of the interface through the interface management module 1;

[0099] Specifically, through modular design and automated control, the present invention effectively solves the operation bottleneck in the traditional test mode, significantly improving the accuracy, efficiency, and comprehensiveness of testing. The interface management module 1 automatically identifies and manages interface connections, avoiding inaccurate data caused by incorrect insertion or connection, while enhancing the security of testing. The automated control module 3 realizes the automated scheduling of the test process, reducing manual operations and improving test efficiency. The test execution module 2 covers multiple aspects such as performance testing, protection function testing, communication testing, and load simulation testing, comprehensively evaluating the performance and functions of the frequency converter. The data acquisition module 4 real-time collects key parameters, providing detailed data support for subsequent analysis. The data analysis module 5 quickly identifies abnormal situations and generates test reports through preprocessing, anomaly detection, and performance evaluation. The fault diagnosis module 6 can quickly identify the type of fault, accurately locate the fault position, and provide repair suggestions, shortening the repair time. Thus, it solves the problem that inaccurate detection data of the frequency converter may be caused by incorrect insertion or connection when testers repeatedly perform interface plugging and unplugging operations.

[0100] S2 comprehensively tests parameters such as the output frequency, voltage, current, etc. of the frequency converter;

[0101] Specifically, the current acquisition unit 41 real-time collects the waveform and value of the output current of the frequency converter for evaluating current stability. The voltage acquisition unit 42 real-time collects the waveform and value of the output voltage of the frequency converter to ensure that the voltage is within the designed range. The temperature acquisition unit 43 monitors the temperature of key components inside the frequency converter (such as power modules, radiators, etc.) to ensure that the frequency converter operates within a safe temperature range.

[0102] S3 tests protection functions such as overcurrent, overvoltage, and overload of the frequency converter;

[0103] Specifically, the performance test unit 21 tests performance parameters such as the output frequency, voltage, current, etc. of the frequency converter to ensure that they meet the design specifications. The protection function test unit 22 verifies whether protection functions such as overcurrent, overvoltage, and overload of the frequency converter work properly to ensure the safety of the frequency converter under abnormal working conditions. The communication test unit 23 tests the stability and data transmission accuracy of the communication interface (such as RS485, CAN, etc.) of the frequency converter to ensure normal communication function. The load simulation unit 24 tests the performance of the frequency converter under actual working conditions by simulating different load conditions (light load, heavy load, sudden load, etc.).

[0104] S4 uses the data acquisition and analysis module to real-time monitor the operating state of the frequency converter;

[0105] Specifically, the data preprocessing unit 51 performs cleaning, filtering, and normalization on the collected raw data to remove noise and outliers and ensure the accuracy of the data. The anomaly detection unit 52 identifies anomalies in the data by setting thresholds (such as upper and lower limits of current, voltage, and temperature) and records the anomalous data. The performance evaluation unit 53 quantitatively evaluates the performance of the frequency converter according to test criteria and design indicators and generates a performance score. The report generation unit 54 collates the analysis results into a test report, including performance indicators, anomalies, and improvement suggestions.

[0106] S5 locates the problems existing in the frequency converter through the fault diagnosis module 6.

[0107] Specifically, the fault identification unit 61 quickly identifies possible fault types (such as overheating, short circuit, communication fault, etc.) of the frequency converter through data analysis and pattern matching. The fault location unit 62 accurately locates the specific location where the fault occurs (such as the power module, drive circuit, etc.) in combination with the circuit topology of the frequency converter and test data. The fault repair suggestion unit 63 generates detailed repair suggestions according to the fault type and location, including replacing components, adjusting parameters, etc. The historical data comparison unit 64 compares the current fault data with the historical fault data to assist in diagnosing and predicting potential problems and provide a reference for subsequent improvements.

[0108] Beneficial effects:

[0109] I. Improve test efficiency

[0110] High degree of automation: Through the automatic identification and connection function of the interface management module and the process scheduling of the automatic control module, manual intervention is reduced, and the test efficiency is significantly improved.

[0111] Automation of the test process: The test execution module and the automatic control module work together to automatically complete performance tests, protection function tests, and communication tests according to the preset process without manual operation.

[0112] II. Improve test accuracy

[0113] Real-time data collection and analysis: The data collection module can collect parameters such as current, voltage, and temperature in real time, and through the data analysis module, cleaning, filtering, and normalization are performed to ensure the accuracy and reliability of the data.

[0114] Anomaly detection and performance evaluation: The data analysis module can quickly identify anomalies and generate a detailed test report through setting thresholds and performance evaluation algorithms, ensuring the objectivity and scientific nature of the test results.

[0115] III. Enhance the fault diagnosis ability

[0116] Quick positioning and repair suggestions: The fault diagnosis module can quickly identify the fault type through data analysis and pattern matching, accurately locate the fault position in combination with the circuit topology, and provide detailed repair suggestions, greatly shortening the fault troubleshooting and repair time.

[0117] Historical data comparison: Through the historical data comparison unit, it can assist in diagnosing potential problems, provide references for subsequent improvements, and further enhance the reliability of the frequency converter.

[0118] IV. Improve test safety

[0119] Protection function verification: The test execution module can verify whether the overcurrent, overvoltage, overload and other protection functions of the frequency converter are working properly to ensure the safety of the frequency converter under abnormal conditions.

[0120] Abnormal handling mechanism: The abnormal handling unit of the automatic control module can automatically pause the test and trigger the handling mechanism when detecting an abnormality during the test, avoiding equipment damage or test failure caused by abnormal situations.

[0121] The above-disclosed is only a preferred embodiment of a quality test bench and test method for the production and processing of a frequency converter according to the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the invention.

Claims

1. A quality test bench for the production and processing of frequency converters, characterized in that, It includes an interface management module, a test execution module, an automation control module, a data acquisition module, a data analysis module, and a fault diagnosis module. The interface management module, the test execution module, the data acquisition module, and the data analysis module are connected in sequence. The automation control module is connected to the test execution module and the data analysis module, and the fault diagnosis module is connected to the data analysis module; The interface management module is used to automatically identify and manage the interface connections of the frequency converter; The test execution module is used to perform performance tests and protection function tests; The automation control module is used to control the test process; The data acquisition module is used to collect the current, voltage, and temperature parameters during the operation of the frequency converter in real time; The data analysis module analyzes and judges the collected data, identifies abnormal situations, and generates test reports; The fault diagnosis module is used to diagnose the faults that occur during the test of the frequency converter and provide the causes of the faults and solutions.

2. The quality test bench for the production and processing of frequency converters according to claim 1, wherein The interface management module includes an interface identification unit, a connection management unit, an error detection unit, and an interface configuration unit. The interface identification unit, the connection management unit, the error detection unit, and the interface configuration unit are connected in sequence; The interface identification unit is used to automatically identify the interface type of the frequency converter and ensure correct connection through hardware and software protocol matching; The connection management unit is used for the automatic control of plugging and unplugging operations and the real-time monitoring of the connection status; The error detection unit is used to detect problems such as misplugging, wrong connection, or poor contact during the interface connection process and issue an alarm; The interface configuration unit automatically configures the interface parameters according to the model of the frequency converter and the test requirements.

3. The quality test bench for the production and processing of frequency converters according to claim 1, wherein The test execution module includes a performance test unit, a protection function test unit, a communication test unit, and a load simulation unit; The performance test unit is used to test the output frequency, voltage, and current performance parameters of the frequency converter; The protection function test unit is used to verify whether the overcurrent, overvoltage, and overload protection functions of the frequency converter are working properly; The communication test unit tests the stability of the communication interface of the frequency converter and the accuracy of data transmission; The load simulation unit tests the performance of the frequency converter under actual working conditions by simulating different load conditions.

4. The quality test bench for the production and processing of frequency converters according to claim 1, wherein The automation control module includes a process control unit, an instruction generation unit, a status monitoring unit, and an exception handling unit. The process control unit is connected to the instruction generation unit, and the status monitoring unit is connected to the exception handling unit; The process control unit is used for the automatic scheduling of the entire test process; The instruction generation unit is used to generate specific control instructions according to the test requirements and send them to the corresponding devices; The status monitoring unit is used to monitor the operating status of the frequency converter and the test equipment in real time; The abnormal handling unit is used to automatically pause the test and trigger the corresponding handling mechanism when an abnormality is detected during the test.

5. The quality test bench for frequency converter production and processing according to claim 1, wherein the data acquisition module includes a current acquisition unit, a voltage acquisition unit, and a temperature acquisition unit; the current acquisition unit is used to collect the waveform and value of the output current of the frequency converter in real time; the voltage acquisition unit is used to collect the waveform and value of the output voltage of the frequency converter in real time; the temperature acquisition unit is used to monitor the temperature of the internal components of the frequency converter.

6. The quality test bench for frequency converter production and processing according to claim 1, wherein the data analysis module includes a data preprocessing unit, an abnormality detection unit, a performance evaluation unit, and a report generation unit, and the data preprocessing unit, the abnormality detection unit, the performance evaluation unit, and the report generation unit are connected in sequence; the data preprocessing unit is used to clean, filter, and normalize the collected raw data to remove noise and outliers; the abnormality detection unit identifies abnormal conditions in the data by setting thresholds; the performance evaluation unit quantitatively evaluates the performance of the frequency converter according to the test standards and design indicators; the report generation unit organizes the analysis results into a test report, including performance indicators, abnormal conditions, and improvement suggestions.

7. A quality testing method for the production and processing of frequency converters, which is used for the quality testing bench for the production and processing of frequency converters according to any one of claims 1-6, characterized in that, including the following steps: realize the automatic identification and connection of the interface through the interface management module; conduct a comprehensive test on parameters such as the output frequency, voltage, and current of the frequency converter; test the protection functions such as overcurrent, overvoltage, and overload of the frequency converter; utilize the data acquisition and analysis module to monitor the operating state of the frequency converter in real time; locate the problems existing in the frequency converter through the fault diagnosis module.

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