Multifunctional motor test operation system and method

Abstract

The invention relates to the technical field of motor test equipment, in particular to a multifunctional motor test operation system and method, and the method comprises the steps: a parameter detection module synchronously collects voltage, current, frequency, temperature, vibration, insulation resistance and DC resistance parameters, and converts the parameters into electric signals; the data processing module carries out amplification, filtering and analog-to-digital conversion on the electric signal to obtain a measured value; the storage module stores the measured value; and the report generation module automatically generates a test run report containing parameter analysis and qualification conclusions through a preset template based on the stored value. The parameter detection module synchronously collects various parameters and converts the parameters into electric signals, the data processing module processes the signals to obtain accurate measured values, the storage module stores data, and the report generation module automatically generates a test run report containing analysis and conclusion based on the stored values. The problems that the function is single, data integration is difficult and report generation is tedious are solved, the testing efficiency and accuracy are remarkably improved, and manual errors are avoided.

Description

Technical Field

[0001] This invention relates to the field of electric motor testing equipment technology, and in particular to a multifunctional electric motor testing system and method. Background Technology

[0002] During the production, maintenance, and R&D of electric motors, comprehensive testing is essential to ensure their performance meets requirements. However, existing electric motor testing equipment is often limited in function, typically only capable of detecting certain parameters (such as voltage, current, temperature, or vibration), failing to simultaneously cover multiple key performance indicators of the motor (such as voltage, current, frequency, temperature, vibration, insulation resistance, and DC resistance). A comprehensive evaluation of motor performance requires the use of various devices for separate testing, which is cumbersome and makes data integration and analysis difficult. Furthermore, existing platforms lack the ability to automatically generate commissioning reports, necessitating manual data processing and report writing, which is inefficient and prone to errors. Additionally, the accuracy and stability of motor insulation resistance and DC resistance testing are insufficient, affecting the reliability of the test results.

[0003] Therefore, there is an urgent need to provide a technical solution to address the above problems. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a multifunctional electric motor test operation system and method.

[0005] In a first aspect, the present invention provides a multifunctional electric motor test run system, the technical solution of which is as follows:

[0006] The multifunctional electric motor test run system includes: a parameter detection module, a data processing module, a storage module, and a report generation module;

[0007] The parameter detection module is used to synchronously collect the operating parameters of the motor and convert them into electrical signals; the operating parameters include: voltage parameters, current parameters, frequency parameters, temperature parameters, vibration parameters, insulation resistance parameters, and DC resistance parameters;

[0008] The data processing module is connected to the parameter detection module and is used to amplify, filter and perform analog-to-digital conversion on the electrical signal to obtain the measured values ​​of various parameters of the motor.

[0009] The storage module is connected to the data processing module and is used to store the measured values ​​of various parameters;

[0010] The report generation module is used to automatically generate a trial operation report containing parameter analysis and qualification conclusions based on the measured values ​​of various parameters in the storage module and a preset template.

[0011] The beneficial effects of the multifunctional electric motor test run system of the present invention are as follows:

[0012] The system of this invention synchronously acquires multiple parameters and converts them into electrical signals through a parameter detection module, performs signal processing to obtain accurate measurement values ​​through a data processing module, stores the data through a storage module, and automatically generates a trial operation report containing analysis and conclusions based on the stored values ​​through a report generation module. This solves the problems of limited functionality, difficulty in data integration, and cumbersome report generation, significantly improving testing efficiency and accuracy, and avoiding human error.

[0013] Based on the above scheme, the multifunctional electric motor test run system of the present invention can be further improved as follows.

[0014] In one alternative embodiment, the parameter detection module includes: a voltage and current detection unit and a frequency detection unit;

[0015] The voltage and current detection unit is used to collect the original electrical signals corresponding to the voltage and current parameters through high-precision voltage transformers and current transformers, and convert the original electrical signals into weak electrical signals and transmit them to the data processing module.

[0016] The frequency detection unit is used to collect electrical signals corresponding to frequency parameters through a frequency sensor and to count and analyze the signal frequencies.

[0017] Among the above-mentioned optional methods, acquiring the raw signals and converting them into weak electrical signals using high-precision voltage / current transformers and frequency sensors can significantly improve the measurement accuracy of voltage, current and frequency parameters, reduce signal transmission interference, ensure the reliability of basic electrical parameters, and provide an accurate data foundation for subsequent analysis.

[0018] In one alternative embodiment, the parameter detection module further includes a temperature detection unit and a vibration detection unit;

[0019] The temperature detection unit is used to collect temperature physical quantities through a temperature sensor installed at a preset position on the motor, and convert the temperature physical quantities into electrical signals corresponding to the temperature parameters and transmit them to the data processing module.

[0020] The vibration detection unit is used to collect the original vibration acceleration signal through an accelerometer installed on the motor housing, perform integration calculation on the original signal to obtain vibration parameters including vibration velocity and displacement, and transmit the electrical signal corresponding to the vibration parameters to the data processing module.

[0021] Among the above-mentioned optional methods, deploying temperature sensors in key parts of the motor and combining them with acceleration sensors to obtain vibration velocity and displacement parameters through integral calculations can achieve comprehensive monitoring of the motor's temperature rise and mechanical vibration, promptly detect potential hazards such as overheating or mechanical imbalance, and enhance the ability to evaluate the motor's mechanical performance.

[0022] In one alternative embodiment, the parameter detection module further includes: an insulation detection unit and a DC resistance detection unit;

[0023] The insulation detection unit is used to measure the electrical signal corresponding to the insulation resistance parameter by applying a DC high voltage to the motor winding, and transmit the electrical signal corresponding to the insulation resistance parameter to the data processing module.

[0024] The DC resistance detection unit is used to measure the electrical signal corresponding to the DC resistance parameter of the motor winding through a double-arm bridge, and transmit the electrical signal corresponding to the DC resistance parameter to the data processing module.

[0025] Among the above-mentioned optional methods, the use of DC high-voltage insulation testing and double-arm bridge DC resistance measurement technology improves the testing accuracy and stability of insulation resistance and DC resistance. The automatic discharge function of the insulation detection unit ensures operational safety, and DC resistance detection can accurately identify defects such as winding short circuits and open circuits, improving the reliability of motor electrical safety assessment.

[0026] In one alternative approach, it also includes: a display module;

[0027] The display module is used to receive the measured values ​​of various parameters output by the data processing module and to display the measured values ​​of various parameters in real time.

[0028] Among the above-mentioned optional methods, real-time display of the measured values ​​of all parameters enables operators to intuitively grasp the operating status of the motor, facilitates the rapid identification of abnormal parameters and intervention in the testing process, and improves the controllability of the testing process and the efficiency of human-computer interaction.

[0029] In one alternative approach, the report generation module is specifically used for:

[0030] Extract the measured values ​​of each parameter from the storage module;

[0031] The measured values ​​are compared with preset thresholds to generate parameter anomaly analysis results that include anomaly types and out-of-limit values. The overall qualification of the motor is judged based on the parameter anomaly analysis results, and a qualification conclusion is formed.

[0032] The system automatically fills in the motor's basic information, measured values, abnormal parameter analysis results, and qualification conclusions into a preset template to generate a trial operation report.

[0033] Among the above optional methods, the measured values ​​are automatically compared by setting a threshold, anomaly analysis results and qualification conclusions are generated, and a structured report is generated by filling in the template. This completely replaces manual data processing and report writing, avoids subjective errors, and greatly improves the efficiency of report generation and the objectivity of conclusions.

[0034] In an alternative embodiment, the system further includes a test control module, which is used to:

[0035] Receive test commands from the local operating interface or external devices. The test commands include test parameter settings and start / stop control commands.

[0036] The test command is parsed, the corresponding control signal is generated, and the control signal is transmitted to the data processing module to trigger the parameter detection module to perform synchronous acquisition operation, so as to realize test automation.

[0037] Among the above optional methods, local or remote command parsing is supported, which automates test parameter setting, start / stop control and synchronous data acquisition, reduces manual operation steps, and thus ensures standardized and efficient execution of the test process, which is especially suitable for batch testing scenarios.

[0038] In one alternative approach, it also includes: a wireless communication module;

[0039] The wireless communication module is used to receive test commands sent by external devices via Wi-Fi or Bluetooth protocols, and to send the test commands to the test control module.

[0040] The wireless communication module is also used to remotely transmit the measured values ​​of various parameters in the storage module to external devices.

[0041] Among the above-mentioned optional methods, remote command reception and data transmission based on Wi-Fi / Bluetooth protocols break the limitations of physical space, allowing monitoring of the testing process and acquisition of data in the control room or on a mobile device, enhancing the flexibility and applicability of testing, and is especially suitable for high-risk or hard-to-access testing environments.

[0042] In one alternative approach, each unit of the parameter detection module adopts a detachable modular design, and each unit is connected to the data processing module through a standardized interface.

[0043] Among the aforementioned optional methods, the parameter detection unit adopts detachable modules and standardized interfaces, supporting rapid replacement of faulty units or functional expansion, reducing maintenance costs and time, extending the platform's lifespan, and meeting the customized needs of different testing scenarios. Furthermore, connecting each unit through standardized interfaces further enhances system compatibility and upgrade convenience, allowing users to flexibly add or remove detection function modules as needed, strengthening the platform's ability to adapt to future technological iterations.

[0044] Secondly, the present invention provides a method for testing a multifunctional electric motor, the technical solution of which is as follows:

[0045] The operating parameters of the motor are collected synchronously and converted into electrical signals. The operating parameters include: voltage parameters, current parameters, frequency parameters, temperature parameters, vibration parameters, insulation resistance parameters, and DC resistance parameters.

[0046] The electrical signal is amplified, filtered, and converted from analog to digital to obtain the measured values ​​of various parameters of the motor, and the measured values ​​of each parameter are stored.

[0047] Based on the stored measured values ​​of various parameters, a trial operation report containing parameter analysis and qualification conclusions is automatically generated using a preset template.

[0048] The beneficial effects of the multifunctional electric motor test operation method of the present invention are as follows:

[0049] The method of this invention synchronously acquires multiple parameters and converts them into electrical signals through a parameter detection module, performs signal processing to obtain accurate measurement values ​​through a data processing module, stores the data through a storage module, and automatically generates a trial operation report containing analysis and conclusions based on the stored values ​​through a report generation module. This solves the problems of limited functionality, difficulty in data integration, and cumbersome report generation, significantly improving testing efficiency and accuracy, and avoiding human error.

[0050] Based on the above scheme, the multifunctional electric motor test operation method of the present invention can be further improved as follows.

[0051] In one alternative approach, the synchronous acquisition step includes:

[0052] The original electrical signals corresponding to voltage and current parameters are collected by high-precision voltage transformers and current transformers, and the original electrical signals are converted into weak electrical signals.

[0053] The frequency sensor collects the electrical signals corresponding to the frequency parameters, and the frequency of the electrical signals is counted and analyzed.

[0054] Among the above-mentioned optional methods, acquiring the raw signals and converting them into weak electrical signals using high-precision voltage / current transformers and frequency sensors can significantly improve the measurement accuracy of voltage, current and frequency parameters, reduce signal transmission interference, ensure the reliability of basic electrical parameters, and provide an accurate data foundation for subsequent analysis.

[0055] In an alternative approach, the synchronous acquisition step further includes:

[0056] Temperature physical quantities are collected by temperature sensors installed in the motor windings and bearings and converted into electrical signals corresponding to the temperature parameters.

[0057] The vibration acceleration signal is collected by an accelerometer installed on the motor housing, and the vibration velocity and displacement parameters are obtained by integration.

[0058] Among the above-mentioned optional methods, deploying temperature sensors in key parts of the motor and combining them with acceleration sensors to obtain vibration velocity and displacement parameters through integral calculations can achieve comprehensive monitoring of the motor's temperature rise and mechanical vibration, promptly detect potential hazards such as overheating or mechanical imbalance, and enhance the ability to evaluate the motor's mechanical performance.

[0059] In an alternative approach, the synchronous acquisition step further includes:

[0060] The electrical signal corresponding to the insulation resistance parameter is measured by applying a DC high voltage to the motor winding;

[0061] The electrical signal corresponding to the DC resistance parameter of the motor winding is measured by a double-arm bridge.

[0062] Among the above-mentioned optional methods, the use of DC high-voltage insulation testing and double-arm bridge DC resistance measurement technology improves the testing accuracy and stability of insulation resistance and DC resistance. DC resistance detection can accurately identify defects such as winding short circuits and open circuits, improving the reliability of motor electrical safety assessment.

[0063] In one alternative approach, it also includes:

[0064] The measured values ​​of various parameters are displayed on the display device in real time.

[0065] Among the above-mentioned optional methods, real-time display of the measured values ​​of all parameters enables operators to intuitively grasp the operating status of the motor, facilitates the rapid identification of abnormal parameters and intervention in the testing process, and improves the controllability of the testing process and the efficiency of human-computer interaction.

[0066] In one alternative approach, the report generation step includes:

[0067] Extract the measured values ​​of each parameter from storage;

[0068] The measured values ​​are compared with preset thresholds to generate parameter anomaly analysis results containing anomaly types and out-of-limit values. Based on the anomaly analysis results, the overall qualification of the motor is judged, and a qualification conclusion is formed.

[0069] Enter the basic information of the motor, measured values, analysis results and conclusions into the preset template to generate a trial operation report.

[0070] Among the above optional methods, the measured values ​​are automatically compared by setting a threshold, anomaly analysis results and qualification conclusions are generated, and a structured report is generated by filling in the template. This completely replaces manual data processing and report writing, avoids subjective errors, and greatly improves the efficiency of report generation and the objectivity of conclusions.

[0071] In one alternative approach, it also includes:

[0072] Receive test commands from the local operating interface or external devices. The test commands include test parameter settings and start / stop control commands.

[0073] The test command is parsed to generate control signals, and the parameters are synchronously acquired based on the control signals.

[0074] Among the above optional methods, local or remote command parsing is supported, which automates test parameter setting, start / stop control and synchronous data acquisition, reduces manual operation steps, and thus ensures standardized and efficient execution of the test process, which is especially suitable for batch testing scenarios.

[0075] In one alternative approach, test instructions are received via Wi-Fi or Bluetooth protocols; it also includes: remotely transmitting the measured values ​​of the stored parameters to an external device via wireless communication.

[0076] Among the above-mentioned optional methods, remote command reception and data transmission based on Wi-Fi / Bluetooth protocols break the limitations of physical space, allowing monitoring of the testing process and acquisition of data in the control room or on a mobile device, enhancing the flexibility and applicability of testing, and is especially suitable for high-risk or hard-to-access testing environments.

[0077] In one alternative approach, during the synchronous acquisition step, different parameters are acquired using detachable and replaceable detection devices, each of which is connected to the signal processing system via a standardized interface.

[0078] Among the aforementioned optional methods, the use of detachable modules and standardized interfaces supports rapid replacement of faulty units or functional expansion, reducing maintenance costs and time, extending platform lifespan, and meeting the customized needs of different testing scenarios. Furthermore, connecting each unit through standardized interfaces further enhances compatibility and ease of upgrades, allowing users to flexibly add or remove testing equipment as needed, thus strengthening their ability to adapt to future technological iterations.

[0079] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0080] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0081] Figure 1 This is a schematic diagram of the structure of a multifunctional electric motor test run system according to the present invention;

[0082] Figure 2This is a schematic diagram illustrating the implementation process of a multifunctional electric motor test run system according to the present invention;

[0083] Figure 3 This is a flowchart illustrating a multifunctional electric motor trial operation method according to the present invention. Detailed Implementation

[0084] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein.

[0085] Figure 1 A schematic diagram of the structure of a multifunctional electric motor test run system provided by the present invention is shown, as follows: Figure 1 As shown, the system includes: a parameter detection module, a data processing module, a storage module, and a report generation module;

[0086] The parameter detection module is used to synchronously collect the operating parameters of the motor and convert them into electrical signals; the operating parameters include: voltage parameters, current parameters, frequency parameters, temperature parameters, vibration parameters, insulation resistance parameters, and DC resistance parameters;

[0087] The data processing module is connected to the parameter detection module and is used to amplify, filter and perform analog-to-digital conversion on the electrical signal to obtain the measured values ​​of various parameters of the motor.

[0088] The storage module is connected to the data processing module and is used to store the measured values ​​of various parameters;

[0089] The report generation module is used to automatically generate a trial operation report containing parameter analysis and qualification conclusions based on the measured values ​​of various parameters in the storage module and a preset template.

[0090] In this embodiment, the operator connects the motor under test to the test system and starts the test. The parameter detection module synchronously collects the motor's operating parameters, including voltage, current, frequency, temperature, vibration, insulation resistance, and DC resistance. Specifically, voltage and current parameters are converted into weak electrical signals by a current transformer; temperature parameters are converted from physical quantities to electrical signals by a temperature sensor; vibration parameters are obtained by integrating the raw signals collected by an accelerometer; insulation resistance parameters are measured by applying a high DC voltage; and DC resistance parameters are measured using a bridge circuit. All electrical signals of these parameters are synchronously transmitted to the data processing module.

[0091] After receiving the electrical signal from the parameter detection module, the data processing module sequentially performs signal amplification (boosting the signal strength), filtering (eliminating noise interference), and analog-to-digital conversion (converting the analog signal into a digital quantity). The processed data generates the accurate measurement values of various parameters (such as 220V voltage, 65°C temperature, 500MΩ insulation resistance, etc.). The measurement values are transmitted to the storage module in real time. The storage module uses the built-in memory to record the historical data of all parameters, providing a complete data set for subsequent analysis.

[0092] After the test is completed, the report generation module extracts all the measurement values from the storage module and automatically compares and analyzes them through a preset threshold library (such as the insulation resistance threshold ≥ 100MΩ is qualified). If the measurement value exceeds the limit, it generates an analysis result containing the abnormal type (such as "too low insulation resistance") and the exceeded value (such as "measured 80MΩ"). Based on the summary of all parameter anomalies, it judges the overall qualification of the motor (such as "qualified" or "unqualified"). Finally, the module automatically fills in the basic information of the motor (model, rated power, etc.), measurement values, analysis results, and qualification conclusions into a preset template, generating a structured commissioning report that supports formats such as PDF / Word.

[0093] The technical solution of this embodiment synchronously collects multiple parameters through the parameter detection module and converts them into electrical signals. The data processing module performs signal processing to obtain accurate measurement values. The storage module stores the data. The report generation module automatically generates a commissioning report containing analysis and conclusions based on the stored values. It solves the problems of single function, difficult data integration, and cumbersome report generation, significantly improving the test efficiency and accuracy, and avoiding manual errors.

[0094] In an optional manner, the parameter detection module includes: a voltage and current detection unit and a frequency detection unit;

[0095] The voltage and current detection unit is used to collect the original electrical signals corresponding to the voltage parameters and current parameters through high-precision voltage transformers and current transformers, and convert the original electrical signals into weak electrical signals and transmit them to the data processing module;

[0096] The frequency detection unit is used to collect the electrical signal corresponding to the frequency parameter through a frequency sensor and perform counting analysis on the signal frequency.

[0097] It should be noted that the high-precision voltage transformer is an electromagnetic induction device used to convert the high voltage of the motor (such as 380V) into a low voltage signal (such as 0 - 5V) in proportion, ensuring safe measurement and not interfering with the original circuit.

[0098] Based on the principle of electromagnetic induction, the current transformer can convert the large current of the motor (such as 10A) into a small current signal (such as 0 - 20mA) for subsequent circuit processing.

[0099] Low voltage signals refer to low voltage / low current signals (usually ≤36V) after being converted by voltage / current transformers. They have the characteristics of strong anti-interference and low transmission loss, and are suitable for precision measurement circuits.

[0100] The frequency sensor has a built-in signal conditioning circuit and counter, which calculates the frequency value (e.g., 50Hz) by capturing the number of cycles of the AC waveform.

[0101] In this embodiment, the voltage and current detection unit operates as follows: a voltage transformer is connected in parallel to the motor power supply line to collect the raw voltage signal in real time; a current transformer is connected in series to the line to collect the raw current signal. The voltage transformer converts the raw high-voltage signal (e.g., 220V) into a low-voltage signal (2.2V) at a ratio of 1:100; the current transformer converts the raw current signal (e.g., 5A) into a low-voltage current signal (0.1A) at a ratio of 1:50. The converted low-voltage signal is transmitted to the data processing module through a shielded cable to avoid electromagnetic interference.

[0102] The frequency detection unit implementation process is as follows: Connect the frequency sensor in parallel to the motor power supply line to capture the AC voltage waveform signal (sine wave). The internal circuit of the frequency sensor performs zero-crossing detection on the input signal (detects the point where the voltage waveform crosses zero from negative to positive); record the time interval T (unit: seconds) between two consecutive zero-crossings, which is a complete cycle; according to the frequency value calculation formula: f = 1 / T (unit: Hz), the frequency f can be calculated.

[0103] The sensor can also incorporate a low-pass filter to remove high-frequency noise (such as switching noise); during calculation, it can also use an averaging algorithm to continuously measure for 10 cycles and take the average value to ensure stable results.

[0104] Specifically, the voltage and current detection unit and the frequency detection unit synchronously acquire signals, and a unified timing controller ensures the time alignment of the three sets of parameters. The weak current signals and frequency data are transmitted to the data processing module via a standardized interface. Upon receiving the data, the data processing module performs subsequent amplification, filtering, and analog-to-digital conversion operations. Therefore, a safe conversion of voltage / current signals is achieved through a high-precision current transformer. Combined with the period counting algorithm of the frequency sensor, the problem of large measurement errors in traditional equipment is solved, improving the accuracy of electrical parameter measurement and providing a reliable data foundation for motor performance evaluation.

[0105] In one alternative embodiment, the parameter detection module further includes a temperature detection unit and a vibration detection unit;

[0106] The temperature detection unit is used to collect temperature physical quantities through a temperature sensor installed at a preset position on the motor, and convert the temperature physical quantities into electrical signals corresponding to the temperature parameters and transmit them to the data processing module.

[0107] The vibration detection unit is used to collect the original vibration acceleration signal through an accelerometer installed on the motor housing, perform integration calculation on the original signal to obtain vibration parameters including vibration velocity and displacement, and transmit the electrical signal corresponding to the vibration parameters to the data processing module.

[0108] It should be noted that the temperature sensor uses a thermocouple (based on the thermoelectric effect) or a thermistor (based on the resistance temperature change characteristic) to convert the physical quantity of temperature of key parts of the motor (such as windings and bearings) into an electrical signal (voltage or resistance value).

[0109] Accelerometers, based on the piezoelectric effect or capacitance principle, convert the mechanical vibration acceleration of the motor housing into an electrical signal (typically a voltage signal in the mV range).

[0110] Integration refers to processing acceleration signals through mathematical integration. The first integration yields the vibration velocity v, and the second integration yields the vibration displacement s, which is used to comprehensively evaluate the vibration state.

[0111] In this embodiment, the temperature detection unit is implemented as follows: temperature sensors are installed on the motor windings (highest temperature rise point) and at the front and rear bearings. Thermocouples are in direct contact with the metal surface, and thermistors are embedded in insulating grooves. Temperature physical quantities trigger the temperature sensors to generate electrical signals. The thermocouples output microvolt-level temperature difference voltages (e.g., K-type thermocouples: 40μV / ℃), and the thermistors output resistance changes (e.g., PT100: resistance value increases or decreases linearly with temperature).

[0112] In thermocouple processing, the influence of ambient temperature is eliminated through a cold junction compensation circuit, and the microvolt signal is then amplified to the 0-5V range (e.g., 65℃ → 3.25V). In thermistor processing, a bridge circuit is used to convert resistance changes into voltage differences (e.g., 100Ω → 0.5V), and a linearization circuit corrects for nonlinear errors. The converted standard electrical signal (e.g., 0-5V or 4-20mA) is transmitted to the data processing module via a shielded cable.

[0113] The vibration detection unit implementation process is as follows: The raw vibration acceleration signal of the motor housing is acquired via an accelerometer (denoted as a(t), unit: m / s²). 2 Then, integration is performed to obtain the vibration velocity (v(t), unit: m / s) and vibration displacement (s(t), unit: m). The specific process is as follows:

[0114] Accelerometers are fixed to key axial and radial points on the motor housing to capture vibration acceleration signals at a high sampling rate (≥5kHz). The raw signal is first passed through a 4-1000Hz bandpass filter to eliminate low-frequency oscillations (<4Hz) and high-frequency noise (>1000Hz), ensuring signal purity. Simultaneously, the signal from the motor in a stationary state is acquired as a zero-drift reference, and this reference value is subtracted from the dynamic signal in real time to avoid sensor zero-bias error.

[0115] Vibration velocity is calculated by a single integration: the filtered acceleration signal a(t) is integrated over time to obtain the vibration velocity v(t). In the actual system, a discretized trapezoidal integral algorithm is used, and the calculation formula is as follows:

[0116]

[0117] Where n is the current sampling point number (n = 1, 2, 3, ..., n = 1, 2, 3, ...); a n and a n-1 These are the acceleration values ​​for the nth and (n-1)th samples, respectively; Δt is the sampling time interval (e.g., Δt = 0.001s corresponds to a 1kHz sampling rate); v n and v n-1 This represents the current and previous velocity calculation results.

[0118] For example: if a n-1 =5m / s 2 a n =7m / s 2 Δt=0.001s, v n-1 =0.1m / s, then v n =0.1+(7+5) / 2×0.001=0.1+0.006=0.106m / s.

[0119] Calculating vibration displacement using double integral: Integrate the velocity signal v(t) again to obtain the vibration displacement s(t). The discretization formula is as follows:

[0120]

[0121] Among them, s n and s n-1 These are the displacement calculation results for the current and previous calculations, respectively.

[0122] Therefore, if v n-1 =0.1m / s, v n =0.106m / s, s n-1 =0.002m, then s n=0.002+(0.106+0.1) / 2×0.001=0.002+0.000103=0.002103m (2.103mm).

[0123] After the calculation is completed, the electrical signals of vibration velocity (unit: mm / s) and displacement (unit: μm) are transmitted to the data processing module. To ensure accuracy, the system can also adopt the following measures:

[0124] Initial value calibration: At the start of the test, both velocity v0 and displacement s0 are set to zero;

[0125] Accumulated error suppression: The integrator is reset every 60 seconds to avoid long-term integration error;

[0126] Dynamic range control: The displacement range is set to ±10mm, and an alarm is triggered when the range is exceeded. This controls the vibration parameter measurement error within ±5%. For example, when the actual displacement is 1.00mm, the system output range is 0.95-1.05mm.

[0127] Specifically, through step-by-step integration, this embodiment converts acceleration signals into velocity and displacement parameters that can directly assess mechanical vibration, accurately identifying fault characteristics such as rotor imbalance (fundamental frequency vibration) and bearing wear (high-frequency vibration). For example, a sudden increase in displacement of 0.1 mm accompanied by a high-frequency acceleration signal can be identified as bearing damage; a sustained velocity exceeding the limit indicates rotor imbalance. This overcomes the limitation of traditional vibration detection relying solely on acceleration, providing multi-dimensional data support for the mechanical condition diagnosis of electric motors.

[0128] In one alternative embodiment, the parameter detection module further includes: an insulation detection unit and a DC resistance detection unit;

[0129] The insulation detection unit is used to measure the electrical signal corresponding to the insulation resistance parameter by applying a DC high voltage to the motor winding, and transmit the electrical signal corresponding to the insulation resistance parameter to the data processing module.

[0130] The DC resistance detection unit is used to measure the electrical signal corresponding to the DC resistance parameter of the motor winding through a double-arm bridge, and transmit the electrical signal corresponding to the DC resistance parameter to the data processing module.

[0131] It should be noted that the insulation testing unit assesses the insulation performance between the windings and the casing by applying a high-voltage DC current (typically 500-5000V) to the motor windings and measuring the insulation resistance value (unit: MΩ). Its core components are a DC high-voltage generator (outputting an adjustable DC voltage) and a micro-ammeter (measuring leakage current).

[0132] The DC resistance detection unit uses a double-arm bridge (Kelvin bridge) to accurately measure the DC resistance of the winding (unit: mΩ) through a balanced comparison method, identifying winding short circuits, open circuits, or poor contacts. Core components include proportional arm resistors (R1, R2), an adjustable standard resistor (Rs), and a galvanometer.

[0133] DC high voltage differs from AC current. DC high voltage can avoid capacitive current interference and ensure the accuracy of insulation resistance measurement.

[0134] In this embodiment, the insulation detection unit operates as follows: disconnect the motor power supply to ensure complete isolation between the windings and the external circuit. Connect the high-voltage line to the winding terminals and the grounding wire to the grounding bolt on the motor housing.

[0135] Start the DC high voltage generator and gradually increase the voltage to the set value (e.g., apply 1000V DC to a motor with a rated voltage ≤380V).

[0136] After applying a voltage U (unit: V), the microammeter measures the leakage current I (unit: μA) and the insulation resistance R. ins =U / I, for example: if U = 1000V, I = 2μA, then R ins =1000 / 0.000002=500MΩ. If R ins ≥100MΩ (preset threshold) indicates that the insulation is qualified.

[0137] At the moment the test ends, the insulation detection unit automatically connects the discharge resistor (e.g., resistance ≤10kΩ) to reduce the residual voltage of the winding to a safe value (e.g., ≤36V) within a short time. Before the discharge is complete, the high-voltage interface automatically locks to prevent accidental contact.

[0138] The DC resistance detection unit implementation process is as follows: connect the current terminals (C1, C2) of the bridge to both ends of the winding, and place the potential terminals (P1, P2) close to the winding terminals to eliminate the influence of wire resistance.

[0139] Connect the bridge power supply and adjust the proportional arm knob (set R1 / R2 = 0.1) and the adjustable resistor Rs (range: 0.001Ω-10Ω). Adjust Rs until the galvanometer reading is zero (no current flows). At this time, the formula for calculating the winding resistance Rx is:

[0140] Rx = (R1 / R2) × Rs;

[0141] For example: if R1 / R2 = 0.1 and Rs = 1.25Ω, then Rx = 0.1 × 1.25 = 0.125Ω.

[0142] If Rx is 10% lower than the design value (e.g., rated 0.15Ω, measured 0.12Ω), then the winding is determined to be short-circuited.

[0143] If Rx is infinite (the galvanometer cannot be balanced), then the winding is determined to be open-circuited.

[0144] Specifically, the insulation resistance signal (R) ins The insulation test and DC resistance (Rx) signals are converted into standard electrical signals by a signal conditioning circuit (insulation: 0-5V corresponds to 0-1000MΩ; DC resistance: 4-20mA corresponds to 0-2Ω). The signals are transmitted to the data processing module through an isolation amplifier to avoid high-voltage interference with low-voltage circuits. The unit's operating sequence is as follows: insulation test takes precedence over DC resistance test (if the insulation fails, the subsequent process is terminated) to avoid residual charge affecting DC resistance accuracy. Therefore, by using DC high-voltage insulation testing and dual-arm bridge DC resistance measurement, insulation resistance error is reduced, and DC resistance resolution is significantly improved compared to a single-arm bridge. For example, insulation testing can identify insulation degradation of ≥0.5MΩ, and DC resistance testing can detect winding connection looseness of 0.01Ω, accurately diagnosing potential motor faults and solving the core problem of insufficient testing accuracy.

[0145] In one alternative approach, it also includes: a display module;

[0146] The display module is used to receive the measured values ​​of various parameters output by the data processing module and to display the measured values ​​of various parameters in real time.

[0147] It should be noted that the display module uses a liquid crystal display (LCD) or an organic light-emitting diode (OLED) display to convert the digital measurement values ​​output by the data processing module into visual graphics or numerical values ​​for real-time monitoring by operators. Its core components include a driver chip for converting digital signals into screen drive signals and a graphics processing unit for dynamically refreshing the displayed content.

[0148] The measured value refers to the actual value of the parameter generated by the data processing module (such as voltage 220V, temperature 65℃), which is transmitted to the display module in the form of a digital signal.

[0149] In this embodiment, the display module implementation process is as follows: the data processing module uses a parallel bus or serial interface (such as SPI, I...) 2 C) Transmit the measured value to the display module. The data packet format is: Parameter ID + Value + Unit + Timestamp. For example, the voltage parameter data packet is: ID_V=220.5|V|20240520103000, which represents 220.5V and the time is May 20, 2024, at 10:30:00.

[0150] The display module's driver chip parses the data packets, extracting parameter types (such as voltage and temperature) and values. The driver chip then converts these values ​​into a screen pixel matrix.

[0151] The screen is divided into zones, such as: voltage / current (top left), temperature / vibration (top right), insulation / DC resistance (bottom left), and frequency (bottom right).

[0152] When a measured value exceeds a preset threshold (e.g., temperature > 85℃), an abnormal value is highlighted. Furthermore, green indicates values ​​less than or equal to the corresponding preset threshold; red indicates values ​​greater than the corresponding preset threshold.

[0153] Specifically, the data processing module continuously outputs updated measurement values, and the display module renders them in real time. If any parameter exceeds the corresponding preset threshold, it is highlighted and accompanied by an audible alarm. Therefore, by highlighting parameters that exceed limits, operators can quickly identify fault points in a short time, significantly improving efficiency compared to manual troubleshooting. Furthermore, the partitioned layout reduces information interference and lowers the error rate in reading critical parameters.

[0154] In one alternative approach, the report generation module is specifically used for:

[0155] Extract the measured values ​​of each parameter from the storage module;

[0156] The measured values ​​are compared with preset thresholds to generate parameter anomaly analysis results that include anomaly types and out-of-limit values. The overall qualification of the motor is judged based on the parameter anomaly analysis results, and a qualification conclusion is formed.

[0157] The system automatically fills in the motor's basic information, measured values, abnormal parameter analysis results, and qualification conclusions into a preset template to generate a trial operation report.

[0158] It should be noted that the preset template is a predefined report framework file (such as Word / PDF format) containing fixed fields (such as "motor model" and "test results") and variable placeholders (such as "voltage value", "voltage value", and "{conclusion}").

[0159] The results of parameter anomaly analysis include structured data such as the name of the abnormal parameter, the measured value, the threshold, and the anomaly type (e.g., "exceeding the standard" or "insufficient").

[0160] The pass / fail conclusion is the final judgment based on the summary of all abnormal parameters, and is generally "pass" or "fail".

[0161] In this embodiment, the report generation module extracts the complete dataset of the latest test cycle from the storage module, including: basic information of the motor (model, rated power, etc.); and measured values ​​of seven parameters (voltage U, current I, frequency f, temperature T, vibration velocity v, insulation resistance R). ins DC resistance (Rx); test timestamp (e.g., 2024-05-20 10:30:00).

[0162] The system retrieves a preset threshold library stored in the storage module and compares the measured values ​​one by one. If a measured value exceeds the corresponding preset threshold range, an anomaly record is generated. If either the insulation resistance Rins or the DC resistance Rx is unqualified, an "Electrical safety failure" is triggered directly. If both temperature T and vibration v exceed the standard, a note "Bearing overheating risk" is added.

[0163] Based on all abnormal records, determine whether the overall status of the motor is qualified or unqualified, and fill the data into a preset template, for example:

[0164] Replace the model and power in the basic information template; fill in the table placeholders with the measured values; insert abnormal results into the analysis section; and write the qualification conclusion in the summary column.

[0165] Finally, the format is converted, and the template engine outputs a trial operation report in PDF or Word format. Therefore, compared with traditional manual reports, it can be completed automatically in a short time, greatly improving efficiency; threshold comparison is strictly executed by the program, avoiding human error; multi-parameter correlation rules (such as temperature + vibration exceeding the standard) can identify compound faults, which greatly reduces the false negative rate compared with single-parameter analysis.

[0166] In an alternative embodiment, the system further includes a test control module, which is used to:

[0167] Receive test commands from the local operating interface or external devices. The test commands include test parameter settings and start / stop control commands.

[0168] The test command is parsed, the corresponding control signal is generated, and the control signal is transmitted to the data processing module to trigger the parameter detection module to perform synchronous acquisition operation, so as to realize test automation.

[0169] It should be noted that the test control module uses an embedded microcontroller as the system's command center to receive, parse, and execute commands from local or physically connected external devices.

[0170] Synchronous acquisition refers to the simultaneous sampling of all parameter detection units (voltage, temperature, vibration, etc.) under a unified time reference.

[0171] In this embodiment, local operation interface commands are input via platform physical buttons or touchscreen; for start / stop control, a high-level pulse signal is generated during the START command and transmitted to the data processing module via the parallel bus, triggering the parameter detection module to start synchronously; a low-level signal is sent during the STOP command to terminate data acquisition.

[0172] Specifically, the pulse signal arrives at each detection unit simultaneously, and sampling is initiated on the rising edge; the data processing module reads the signal and starts the storage module to record the data in real time.

[0173] In one alternative approach, it also includes: a wireless communication module;

[0174] The wireless communication module is used to receive test commands sent by external devices via Wi-Fi or Bluetooth protocols, and to send the test commands to the test control module.

[0175] The wireless communication module is also used to remotely transmit the measured values ​​of various parameters in the storage module to external devices.

[0176] In this embodiment, the external device sends encrypted commands via Bluetooth or Wi-Fi. The wireless communication module decrypts the commands and verifies their validity. The decrypted commands are then transmitted to the test control module via the SPI interface for parsing and to trigger synchronous data acquisition. After the test, the wireless communication module retrieves the measured values ​​from the storage module and uploads them to the cloud server.

[0177] In one alternative approach, each unit of the parameter detection module adopts a detachable modular design, and each unit is connected to the data processing module through a standardized interface.

[0178] It should be noted that the detachable modular design means that the voltage and current detection unit, frequency detection unit, temperature and vibration detection unit, and insulation DC resistance detection unit are independently packaged as physical modules, supporting quick disassembly and replacement without soldering or complex wiring. Standardized interfaces use a unified physical interface and communication protocol to ensure compatibility of electrical connections and data communication when modules are interchangeable.

[0179] Figure 2 The implementation process of the multifunctional motor test run system is shown, such as... Figure 2 As shown, the overall implementation and operation process is as follows:

[0180] The motor to be tested is fixed in the designated position on the test platform using bolts or clamps, ensuring that there is no looseness between the motor and the platform to avoid additional errors during vibration testing.

[0181] Operators can set test parameters, including test time, test items, and preset thresholds, through the trial operation platform, such as operation buttons, a local operation interface on a touch screen, or connected test control software.

[0182] Temperature sensors (thermocouples or thermistors) are installed at key locations on the motor, such as the winding ends and bearing housings. Acceleration sensors are installed on the axial and radial sides of the motor housing for vibration detection. The signal lines of the sensors are inserted into the corresponding interfaces on the test platform (such as temperature sensor interfaces and vibration sensor interfaces) to ensure a secure connection.

[0183] According to the motor testing specifications, connect the voltage test line, current test line, insulation test line, and DC resistance test line of the test platform to the winding terminals and the grounding terminal of the motor to be tested, respectively, to ensure that the wiring is correct.

[0184] After initiating the insulation and DC resistance tests, the test platform prioritizes the operation of the insulation and DC resistance detection units in the parameter detection module. The insulation detection unit applies a preset DC high voltage to the motor windings, measures the leakage current using a micro-ammeter, and calculates the insulation resistance parameters. The DC resistance detection unit uses a double-arm bridge to measure the DC resistance parameters of the motor windings through a balance comparison method. When both the insulation resistance and DC resistance meet the preset thresholds (e.g., insulation resistance ≥ 100MΩ, DC resistance ≤ design value ± 5%), the system determines that electrical safety is qualified and allows the test to proceed to the next step; if not, the system triggers an alarm and terminates the test.

[0185] After passing electrical safety inspection, the test control software sends a closing command to the control circuit of the trial operation platform, and the motor starts running. At this time, other units of the parameter detection module start synchronous acquisition. Furthermore, the voltage and current detection unit collects the voltage and current signals of the motor during operation through high-precision voltage transformers and current transformers, and converts them into weak electrical signals; the frequency detection unit counts and analyzes the frequency of the motor power supply signal through a frequency sensor to obtain frequency parameters; the temperature detection unit converts the physical quantity of temperature into an electrical signal through temperature sensors installed in key parts of the motor to obtain temperature parameters; the vibration detection unit collects the original vibration acceleration signal of the motor casing through an acceleration sensor, and obtains vibration velocity parameters (first integration) and vibration displacement parameters (second integration) through integration calculation.

[0186] The parameter detection module transmits all collected electrical signals to the data processing module. The data processing module amplifies, filters, and performs analog-to-digital conversion on the signals to obtain accurate measured values ​​of various motor parameters. The processed measured values ​​are then transmitted to the display module via an interface, displaying the real-time values ​​and change curves of each parameter. Operators can visually monitor the motor's operating status through the display module. Simultaneously, the measured values ​​are stored in a storage module (such as a high-capacity removable memory card) for later retrieval and analysis.

[0187] During testing, if the display module shows that a parameter exceeds a preset threshold, the operator can send a stop command via the stop button on the local operating interface or the test control software. The system will immediately cut off the motor power and terminate the test. The operator can then inspect and repair the motor based on the displayed abnormal parameters.

[0188] After the test is completed (either after the preset test time or by manual stopping), the report generation module retrieves all test data from the storage module, including: basic motor information, test parameters, test timestamps, etc. A trial operation report is automatically generated according to a preset template. Users can export the trial operation report to a computer or other storage device through the trial operation platform's data interface, or directly print the report using a printer connected to the platform for easy archiving or submission for review.

[0189] This implementation process achieves an integrated solution for the entire process of motor installation, testing, and reporting through multi-parameter synchronous acquisition by the parameter detection module, precise signal processing by the data processing module, real-time monitoring by the display module, data retention by the storage module, and automated analysis by the report generation module. It solves the problems of traditional testing equipment having single functions, difficulty in data integration, and cumbersome report generation, and significantly improves testing efficiency and accuracy.

[0190] Figure 2 A flowchart illustrating a multifunctional electric motor commissioning method provided by this invention is shown. Figure 2 As shown, it includes the following steps:

[0191] The operating parameters of the motor are collected synchronously and converted into electrical signals. The operating parameters include: voltage parameters, current parameters, frequency parameters, temperature parameters, vibration parameters, insulation resistance parameters, and DC resistance parameters.

[0192] The electrical signal is amplified, filtered, and converted from analog to digital to obtain the measured values ​​of various parameters of the motor, and the measured values ​​of each parameter are stored.

[0193] Based on the stored measured values ​​of various parameters, a trial operation report containing parameter analysis and qualification conclusions is automatically generated using a preset template.

[0194] The technical solution of this embodiment uses a parameter detection module to simultaneously collect multiple parameters and convert them into electrical signals. A data processing module processes these signals to obtain precise measurement values, a storage module stores the data, and a report generation module automatically generates a trial operation report containing analysis and conclusions based on the stored values. This solves the problems of limited functionality, difficulty in data integration, and cumbersome report generation, significantly improving testing efficiency and accuracy and avoiding human error.

[0195] In one alternative approach, the synchronous acquisition step includes:

[0196] The original electrical signals corresponding to voltage and current parameters are collected by high-precision voltage transformers and current transformers, and the original electrical signals are converted into weak electrical signals.

[0197] The frequency sensor collects the electrical signals corresponding to the frequency parameters, and the frequency of the electrical signals is counted and analyzed.

[0198] In an alternative approach, the synchronous acquisition step further includes:

[0199] Temperature physical quantities are collected by temperature sensors installed in the motor windings and bearings and converted into electrical signals corresponding to the temperature parameters.

[0200] The vibration acceleration signal is collected by an accelerometer installed on the motor housing, and the vibration velocity and displacement parameters are obtained by integration.

[0201] In an alternative approach, the synchronous acquisition step further includes:

[0202] The electrical signal corresponding to the insulation resistance parameter is measured by applying a DC high voltage to the motor winding;

[0203] The electrical signal corresponding to the DC resistance parameter of the motor winding is measured by a double-arm bridge.

[0204] In one alternative approach, it also includes:

[0205] The measured values ​​of various parameters are displayed on the display device in real time.

[0206] In one alternative approach, the report generation step includes:

[0207] Extract the measured values ​​of each parameter from storage;

[0208] The measured values ​​are compared with preset thresholds to generate parameter anomaly analysis results containing anomaly types and out-of-limit values. Based on the anomaly analysis results, the overall qualification of the motor is judged, and a qualification conclusion is formed.

[0209] Enter the basic information of the motor, measured values, analysis results and conclusions into the preset template to generate a trial operation report.

[0210] In one alternative approach, it also includes:

[0211] Receive test commands from the local operating interface or external devices. The test commands include test parameter settings and start / stop control commands.

[0212] The test command is parsed to generate control signals, and the parameters are synchronously acquired based on the control signals.

[0213] In one alternative approach, test instructions are received via Wi-Fi or Bluetooth protocols; it also includes: remotely transmitting the measured values ​​of the stored parameters to an external device via wireless communication.

[0214] In one alternative approach, during the synchronous acquisition step, different parameters are acquired using detachable and replaceable detection devices, each of which is connected to the signal processing system via a standardized interface.

[0215] The steps for implementing the corresponding functions of each parameter and step in the multifunctional motor test operation method of this embodiment can be referred to the parameters and modules in the embodiment of the multifunctional motor test operation system above, and will not be repeated here.

[0216] Those skilled in the art will recognize that this invention can be implemented as a system, method, or computer program product. Therefore, this disclosure can be specifically implemented in the following forms: it can be entirely hardware, entirely software (including firmware, resident software, microcode, etc.), or a combination of hardware and software, generally referred to herein as a "circuit," "module," or "system." Furthermore, in some embodiments, this invention can also be implemented as a computer program product in one or more computer-readable media containing computer-readable program code.

[0217] Any combination of one or more computer-readable media can be used. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0218] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multifunctional electric motor test run system, characterized in that, include: Parameter detection module, data processing module, storage module, and report generation module; The parameter detection module is used to synchronously collect the operating parameters of the motor and convert them into electrical signals; the operating parameters include: voltage parameters, current parameters, frequency parameters, temperature parameters, vibration parameters, insulation resistance parameters, and DC resistance parameters; The data processing module is connected to the parameter detection module and is used to amplify, filter and perform analog-to-digital conversion on the electrical signal to obtain the measured values ​​of various parameters of the motor. The storage module is connected to the data processing module and is used to store the measured values ​​of various parameters; The report generation module is used to automatically generate a trial operation report containing parameter analysis and qualification conclusions based on the measured values ​​of various parameters in the storage module and a preset template.

2. The multifunctional electric motor test run system according to claim 1, characterized in that, The parameter detection module includes: a voltage and current detection unit and a frequency detection unit; The voltage and current detection unit is used to collect the original electrical signals corresponding to the voltage and current parameters through high-precision voltage transformers and current transformers, and convert the original electrical signals into weak electrical signals and transmit them to the data processing module. The frequency detection unit is used to collect electrical signals corresponding to frequency parameters through a frequency sensor and to count and analyze the signal frequencies.

3. The multifunctional electric motor test run system according to claim 2, characterized in that, The parameter detection module further includes: a temperature detection unit and a vibration detection unit; The temperature detection unit is used to collect temperature physical quantities through a temperature sensor installed at a preset position on the motor, and convert the temperature physical quantities into electrical signals corresponding to the temperature parameters and transmit them to the data processing module. The vibration detection unit is used to collect the original vibration acceleration signal through an accelerometer installed on the motor housing, perform integration calculation on the original signal to obtain vibration parameters including vibration velocity and displacement, and transmit the electrical signal corresponding to the vibration parameters to the data processing module.

4. The multifunctional electric motor test run system according to claim 3, characterized in that, The parameter detection module further includes: an insulation detection unit and a DC resistance detection unit; The insulation detection unit is used to measure the electrical signal corresponding to the insulation resistance parameter by applying a DC high voltage to the motor winding, and transmit the electrical signal corresponding to the insulation resistance parameter to the data processing module. The DC resistance detection unit is used to measure the electrical signal corresponding to the DC resistance parameter of the motor winding through a double-arm bridge, and transmit the electrical signal corresponding to the DC resistance parameter to the data processing module.

5. The multifunctional electric motor test run system according to claim 1, characterized in that, Also includes: Display module; The display module is used to receive the measured values ​​of various parameters output by the data processing module and to display the measured values ​​of various parameters in real time.

6. The multifunctional electric motor test run system according to claim 1, characterized in that, The report generation module is specifically used for: Extract the measured values ​​of each parameter from the storage module; The measured values ​​are compared with preset thresholds to generate parameter anomaly analysis results that include anomaly types and out-of-limit values. The overall qualification of the motor is judged based on the parameter anomaly analysis results, and a qualification conclusion is formed. The system automatically fills in the motor's basic information, measured values, abnormal parameter analysis results, and qualification conclusions into a preset template to generate a trial operation report.

7. The multifunctional electric motor test run system according to claim 1, characterized in that, Also includes: The test control module is used for: Receive test commands from the local operating interface or external devices. The test commands include test parameter settings and start / stop control commands. The test command is parsed, the corresponding control signal is generated, and the control signal is transmitted to the data processing module to trigger the parameter detection module to perform synchronous acquisition operation, so as to realize test automation.

8. The multifunctional electric motor test run system according to claim 7, characterized in that, Also includes: Wireless communication module; The wireless communication module is used to receive test commands sent by external devices via Wi-Fi or Bluetooth protocols, and to send the test commands to the test control module. The wireless communication module is also used to remotely transmit the measured values ​​of various parameters in the storage module to external devices.

9. The multifunctional electric motor test run system according to claim 4, characterized in that, Each unit of the parameter detection module adopts a detachable modular design, and each unit is connected to the data processing module through a standardized interface.

10. A method for testing a multifunctional electric motor, characterized in that, The multifunctional electric motor test run system as described in any one of claims 1-9 is adopted.

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