Anti-surge method and system for electronic jacquard machine

Abstract

The invention provides an anti-surge method and system for an electronic jacquard machine, and relates to the technical field of anti-surge, and the method comprises the steps: collecting a working voltage signal, a working current signal and operation parameters of the electronic jacquard machine, carrying out the judgment processing of the working voltage signal and the working current signal, and obtaining a corresponding judgment signal; performing feature extraction processing on the judgment signal to obtain surge signal feature data; making a surge suppression scheme, performing amplitude judgment processing on the surge signal characteristic data to obtain an amplitude judgment result, and executing the corresponding surge suppression scheme; displaying the working state of the electronic jacquard machine before and after executing the surge suppression scheme in real time, and performing comparative analysis to obtain a surge suppression attenuation rate; according to the surge suppression attenuation rate, the surge signal characteristic data, the surge suppression scheme and the operation parameters of the electronic jacquard machine, the anti-surge intelligent optimization model is constructed, then the anti-surge optimization index is obtained, the electronic jacquard machine is adjusted and protected, and the safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of surge protection, in particular to a surge protection method and system for an electronic jacquard machine. Background Art

[0002] Electronic jacquard machines are core equipment in the textile industry. Their control systems contain a large number of sophisticated electronic components, requiring extremely high power supply stability. However, surge issues often occur in industrial sites due to the following reasons: Grid fluctuations: voltage spikes caused by lightning strikes and the start-up and shutdown of high-power equipment; Internal interference: electromagnetic interference caused by motor commutation and high-frequency switching; Environmental factors: Humid and dusty environments accelerate circuit aging and reduce surge resistance.

[0003] Traditional surge protection solutions have the following defects: Insufficient response speed: Relying on passive components such as varistors, it is impossible to complete suppression before the surge peak; Poor adaptability: Fixed threshold strategies are difficult to cope with surge characteristics under different working conditions (such as differences in amplitude and duration); Lack of intelligent optimization: Unable to dynamically adjust protection strategies based on equipment operating parameters (such as spindle speed and yarn tension); High maintenance costs: Fault diagnosis relies on manual troubleshooting and cannot predict the risk of component aging.

[0004] Surge suppression is disconnected from equipment operating parameters: Traditional solutions fail to consider the impact of the electronic jacquard machine's dynamic operating parameters (such as spindle speed and motor drive current) on surge sensitivity. For example, high-speed motor operation is more likely to generate back-EMF surges, but existing systems cannot automatically adjust protection thresholds based on speed.

[0005] Limitations of a single suppression strategy: Components such as varistors and TVS may experience performance degradation after absorbing surge energy, but existing systems lack a mechanism to monitor and adaptively adjust the life of suppression components.

[0006] Lack of predictive maintenance: Unable to predict potential failures through historical surge data and equipment status parameters (such as bearing temperature and voltage fluctuation frequency), resulting in unplanned downtime.

[0007] To address the above issues, the improvement directions include: multi-dimensional surge detection: combining real-time monitoring of power supply line voltage, current and signal line interference; dynamic suppression strategy: automatically adjusting the suppression component combination according to the electronic jacquard machine operating parameters (such as spindle speed and yarn tension); AI-driven optimization: training models through historical data to predict surge risks and optimize protection parameters; fault self-diagnosis: real-time monitoring of the suppression component status and providing maintenance warnings.

[0008] Therefore, a method and system for surge protection of an electronic jacquard machine are now provided. Summary of the Invention

[0009] In order to solve the above technical problems, an object of the present invention is to provide a method and system for preventing surges in an electronic jacquard machine.

[0010] In order to achieve the above object, the present invention provides the following technical solution: a method for preventing surges in an electronic jacquard machine, comprising: Collecting the working voltage signal, working current signal and operating parameters of the electronic jacquard machine, judging and processing the working voltage signal and working current signal to obtain a corresponding judgment signal; Performing feature extraction processing on the judgment signal to obtain surge signal feature data; formulating a surge suppression plan, and performing amplitude judgment processing on the surge signal feature data to obtain an amplitude judgment result, and executing a corresponding surge suppression plan based on the amplitude judgment result; Real-time display of the working status of the electronic jacquard machine and the working status of the electronic jacquard machine after the surge suppression solution is implemented, and comparative analysis is performed to obtain the surge suppression attenuation rate; Based on the surge suppression attenuation rate, surge signal characteristic data, surge suppression scheme and electronic jacquard machine operating parameters, an intelligent surge protection optimization model is constructed to obtain the surge protection optimization index. The operating parameters of the electronic jacquard machine are adjusted and protected according to the surge protection optimization index.

[0011] According to one preferred embodiment of the present invention, the process of collecting the working voltage signal, the working current signal and the operating parameters of the electronic jacquard machine includes: A non-contact sensing unit is provided, and a collection cycle is set. The collection cycle includes several collection moments. The working current signal and the working voltage signal of the electronic jacquard machine during operation are collected according to the collection moments of the non-contact sensing unit. The laser sensing unit, the infrared thermal imaging sensing unit and the binocular vision sensing unit are synchronously deployed to collect the vibration, temperature and mechanical action timing data of the electronic jacquard machine during operation in real time. The vibration, temperature and mechanical action timing data are recorded as the electronic jacquard machine operation parameters.

[0012] According to one preferred embodiment of the present invention, the process of determining and processing the operating voltage signal and the operating current signal to obtain the corresponding determination signal includes: The collected working voltage signal and working current signal are subjected to denoising, and the denoised working voltage signal and working current signal are recorded as as well as ; Preset standard working voltage signal threshold And the standard working current signal threshold ; like and When the working voltage signal of the electronic jacquard machine is And the working current signal All are normal and marked as normal signals; like and When the working voltage signal of the electronic jacquard machine is There is an abnormality, working current signal Normal, marked as abnormal working voltage signal; like and When the working voltage signal of the electronic jacquard machine is Normal, working current signal If there is an abnormality, it will be marked as an abnormal working current signal; like and When the working voltage signal of the electronic jacquard machine is And the working current signal All are abnormal, marked as abnormal working voltage and current signals;

[0013] The normal signal, the abnormal working voltage signal, the abnormal working current signal, and the abnormal working voltage and current signal are marked as judgment signals.

[0014] According to one preferred embodiment of the present invention, the process of performing feature extraction processing on the judgment signal includes: Acquire a judgment signal; if the judgment signal is a normal signal, do not perform feature extraction processing; If the judgment signal is an abnormal working voltage signal, feature extraction processing is performed on the abnormal working voltage signal, and the process is as follows: Obtain the working voltage signal at n acquisition moments before and after, and obtain the rising slope and the descending slope ; Mark the working voltage signals and working voltage abnormality signals at each of the n acquisition moments before and after as a voltage array ; According to the standard working voltage signal threshold , obtain the peak operating voltage signal and valley operating voltage signal ; Obtain the voltage frequency domain representation corresponding to the acquisition time , obtain T positive frequency points of the voltage frequency domain representation and obtain the power spectrum , traverse the power values ​​of T positive frequency points to obtain the total voltage energy of the target frequency band ; Will 、 、 、 as well as Recorded as voltage surge signal characteristic data; If the judgment signal is an abnormal working current signal, feature extraction processing is performed on the abnormal working current signal, and the process is as follows: Obtain the working current signal at m acquisition moments before and after, and obtain the rising current change rate And the falling current change rate ; Mark the working current signals and working current abnormal signals at m acquisition moments before and after as a current array ; According to the standard working current signal threshold , obtain the peak operating current signal and valley operating current signal ; Obtain the current frequency domain representation corresponding to the acquisition time , obtain the power spectrum corresponding to the acquisition time ; Traverse the power values ​​of Q positive frequency points to obtain the total current energy of the target frequency band ; Will 、 、 、 as well as Recorded as voltage surge signal characteristic data; If the judgment signal is an abnormal working voltage and current signal, feature extraction processing is performed on the abnormal working voltage and current signal, and the process is as follows: Based on the above-mentioned voltage surge signal characteristic data and current surge signal characteristic data acquisition process, the voltage surge signal characteristic data and current surge signal characteristic data corresponding to the acquisition time are obtained; Based on the Pearson correlation coefficient technology, a correlation calculation is performed on the voltage surge signal characteristic data and the current surge signal characteristic data to obtain a correlation coefficient; The working current signal and working voltage signal at each s acquisition time before and after the acquisition are calculated according to the correlation coefficient formula: ;in, is the correlation coefficient, is the current value at the corresponding acquisition moment, is the voltage value at the corresponding acquisition moment, is the current mean value at all acquisition moments, is the voltage mean value at all acquisition moments; The corresponding voltage surge signal characteristic data, current surge signal characteristic data and correlation coefficient Recorded as comprehensive surge signal characteristic data; The voltage surge signal characteristic data, the current surge signal characteristic data and the comprehensive surge signal characteristic data are recorded as surge signal characteristic data.

[0015] According to one preferred embodiment of the present invention, the process of formulating a surge suppression solution includes: The surge suppression scheme includes a voltage surge suppression scheme, a current surge suppression scheme, and a voltage and current surge suppression scheme; The voltage surge suppression solution includes: In the voltage surge suppression of electronic jacquard machines, the working voltage signal is limited to the standard working voltage signal threshold Below, the surge energy is monitored by voltage transformer at the same time. If the total voltage energy of the target frequency band is If the threshold is exceeded, it will automatically switch to the derating mode; at the same time, the adaptive filtering algorithm is used to suppress the oscillation of the abnormal working voltage signal, thereby suppressing the abnormal working voltage signal and obtaining the suppressed working voltage signal; The current surge suppression solution includes: When the instantaneous current value is detected to exceed the standard working current signal threshold When the AC solid state relay is The main circuit is cut off internally and the self-recovery fuse triggers the high-impedance state. After the fault is cleared, it automatically resets according to the temperature sensing unit and the voltage zero-crossing detection signal to avoid secondary impact. Calculate the current change rate in real time and dynamically adjust the inductor core saturation point to suppress the current change rate to Following, and obtain the suppressed working current signal; The voltage surge suppression scheme and the current surge suppression scheme are integrated to obtain a voltage and current surge suppression scheme.

[0016] According to one preferred embodiment of the present invention, the process of performing amplitude determination processing on surge signal characteristic data includes: Based on the surge signal characteristic data, the corresponding voltage surge signal amplitude and current surge signal amplitude are obtained; Preset voltage amplitude threshold and current amplitude threshold ; When the voltage surge signal amplitude is greater than the voltage amplitude threshold When the voltage surge suppression scheme is executed, the working voltage signal of the electronic jacquard machine is adjusted to obtain the working state of the electronic jacquard machine after adjustment; When the current surge signal amplitude is greater than the current amplitude threshold When the current surge suppression scheme is executed, the working current signal of the electronic jacquard machine is adjusted to obtain the working state of the electronic jacquard machine after adjustment; When the voltage surge signal amplitude is greater than the voltage amplitude threshold And the current surge signal amplitude is greater than the current amplitude threshold When the voltage and current surge suppression scheme is executed, the working current signal and the working voltage signal of the electronic jacquard machine are adjusted to obtain the working state of the electronic jacquard machine after adjustment.

[0017] According to one of the preferred embodiments of the present invention, the working state of the electronic jacquard machine and the working state of the electronic jacquard machine after the surge suppression scheme is executed are compared and analyzed to obtain the surge suppression attenuation rate. The process includes: Obtaining the operating current signal of an electronic jacquard machine without implementing a surge suppression solution And the working voltage signal And implement surge suppression scheme for electronic jacquard machine's working current signal And the working voltage signal ; The working current signal of the electronic jacquard machine without implementing the surge suppression solution And the working current signal , obtain the current surge suppression attenuation rate 1. The current surge suppression attenuation rate 1 is: ; The working voltage signal of the electronic jacquard machine is not implemented according to the surge suppression solution And the working voltage signal , obtain the voltage surge suppression attenuation rate 2. The voltage surge suppression attenuation rate 2 is: ; According to the current surge suppression attenuation rate 1 and voltage surge suppression attenuation rate 2. Obtain surge suppression attenuation rate for: .

[0018] According to one preferred embodiment of the present invention, the process of constructing an intelligent surge protection optimization model and obtaining a surge protection optimization index includes: Obtaining several sets of surge suppression attenuation rates, surge signal characteristic data, surge suppression solutions, and electronic jacquard machine operating parameters; For several groups of surge signal characteristic data, standard working voltage signal threshold And the standard working current signal threshold Group and label them, is a natural number; Will Set up several groups of surge suppression attenuation rate, surge signal characteristic data, surge suppression scheme, electronic jacquard machine operating parameters, standard working voltage signal threshold And the standard working current signal threshold As sample data, and is less than A natural number, and using the sample data, obtain the mean of the sample data, recorded as a sample set; The remaining groups of surge suppression attenuation rates, surge signal characteristic data, surge suppression solutions, electronic jacquard machine operating parameters, standard operating voltage signal thresholds And the standard working current signal threshold As a test set; A training sample set is formed according to the sample set and the test set; Based on convolutional network neural network, a standard intelligent optimization model is constructed; The training sample set is input into the standard intelligent optimization model, the standard intelligent optimization model is trained, and the standard intelligent optimization model after training is obtained. The standard intelligent optimization model after training is recorded as the anti-surge intelligent optimization model, and the anti-surge optimization index under the current environmental factors is generated. , the surge protection optimization index for: ;in, is the weight coefficient of the working voltage signal, is the weight coefficient of the working current signal, is the surge suppression attenuation rate The weight coefficient of Indicates the actual working voltage signal, Indicates the actual working current signal, A proportionality factor that indicates the degree of temperature influence.

[0019] The present invention further provides a surge protection system for an electronic jacquard machine, comprising: a surge detection module, a signal processing module, a surge suppression module, a status display module and an intelligent optimization module; The surge detection module is used to monitor the working voltage signal, working current signal and operating parameters of the electronic jacquard machine in real time, and perform judgment processing to obtain a judgment signal; The signal processing module is used to perform feature extraction processing on the judgment signal to obtain surge signal feature data; The surge suppression module is used to formulate a surge suppression plan, perform amplitude judgment processing, obtain the amplitude judgment result, and execute the corresponding surge suppression plan; The status display module is used to compare and analyze the working status of the electronic jacquard machine before and after the surge suppression scheme is implemented, and obtain the surge suppression attenuation rate; The intelligent optimization module is used to construct an anti-surge intelligent optimization model, thereby obtaining an anti-surge optimization index, and adjusting and protecting the working parameters of the electronic jacquard machine according to the anti-surge optimization index.

[0020] The present invention further provides a computer-readable storage medium storing a computer program. The computer program can be executed by a processor to implement the surge protection method for an electronic jacquard machine.

[0021] Compared with the prior art, the present invention has the following advantages: collecting the working voltage signal, the working current signal and the operating parameters of the electronic jacquard machine, performing judgment processing on the working voltage signal and the working current signal to obtain the corresponding judgment signal; performing feature extraction processing on the judgment signal to obtain surge signal feature data; Formulate a surge suppression plan, perform amplitude judgment processing on the surge signal characteristic data, obtain the amplitude judgment result, and execute the corresponding surge suppression plan; display the working status of the electronic jacquard machine before and after executing the surge suppression plan in real time, and perform comparative analysis to obtain the surge suppression attenuation rate; construct an anti-surge intelligent optimization model based on the surge suppression attenuation rate, surge signal characteristic data, surge suppression plan and electronic jacquard machine operating parameters, and then obtain the anti-surge optimization index. Adjust and protect the electronic jacquard machine, obtain the anti-surge optimization index through the anti-surge intelligent optimization model, provide maintenance warnings, and greatly improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction to the drawings required for use in the embodiments will be given below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 The figure is a schematic diagram of the steps of a surge protection method for an electronic jacquard machine.

[0024] Figure 2 The present invention is a flow chart of a method and system for preventing surges in an electronic jacquard machine.

[0025] Figure 3 The module diagram of a surge protection system for an electronic jacquard machine is shown in FIG. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, a surge protection method for an electronic jacquard machine includes: Collecting the working voltage signal, working current signal and operating parameters of the electronic jacquard machine, judging and processing the working voltage signal and working current signal to obtain a corresponding judgment signal; Performing feature extraction processing on the judgment signal to obtain surge signal feature data; formulating a surge suppression plan, and performing amplitude judgment processing on the surge signal feature data to obtain an amplitude judgment result, and executing a corresponding surge suppression plan based on the amplitude judgment result; Real-time display of the working status of the electronic jacquard machine and the working status of the electronic jacquard machine after the surge suppression solution is implemented, and comparative analysis is performed to obtain the surge suppression attenuation rate; Based on the surge suppression attenuation rate, surge signal characteristic data, surge suppression scheme and electronic jacquard machine operating parameters, an intelligent surge protection optimization model is constructed to obtain the surge protection optimization index. The operating parameters of the electronic jacquard machine are adjusted and protected according to the surge protection optimization index.

[0028] It should be further explained that, in the specific implementation process, the specific process of collecting the working voltage signal, working current signal and operating parameters of the electronic jacquard machine includes: A non-contact sensing unit is provided, and a collection cycle is set. The collection cycle includes a plurality of collection moments. Working current signals and working voltage signals during the operation of the electronic jacquard are collected according to the collection moments. A laser sensing unit, an infrared thermal imaging sensing unit, and a binocular vision sensing unit are synchronously deployed to collect vibration, temperature, and mechanical action timing data during the operation of the electronic jacquard in real time. The vibration, temperature, and mechanical action timing data are recorded as operating parameters of the electronic jacquard; For example, the corresponding sensing unit uses an STM32H7 microcontroller with an integrated edge computing module. The built-in adaptive calibration algorithm can automatically inject a standard sine wave to complete zero-point correction when the temperature changes; it samples at a low power consumption of 1kHz during normal operation, and triggers 50kHz burst sampling when abnormal vibration or current mutation is detected, and stores it without delay through ferroelectric memory.

[0029] For example, the transmission link between the corresponding sensor units during the operation of the electronic jacquard machine uses Profibus DP redundant ring network and LoRaWAN adaptive spread spectrum technology, combined with double-shielded cables and a three-level grounding system to ensure signal integrity.

[0030] It should be further explained that, in a specific implementation process, the specific process of judging and processing the working voltage signal and the working current signal to obtain the corresponding judgment signal includes: Obtaining a working voltage signal and a working current signal; It should be further explained that the collected working voltage signal and working current signal will be affected by factors such as electromagnetic interference and noise; First, the collected operating voltage and current signals are decomposed into sub-signals of different frequency components through multi-resolution analysis. The operating voltage and current signals are then broken down layer by layer into details of different scales. High-frequency sub-signals usually contain noise, while low-frequency sub-signals retain their main features. Then, threshold processing is performed on the high-frequency sub-signals, and a frequency threshold is set. Based on this threshold, noise signals with smaller amplitudes are filtered out. Finally, the processed signals at each layer are recombined, and the denoised operating voltage and current signals are reconstructed through inverse transformation. For example, if the working voltage signal from the acquisition time is (Standard voltage is ), the working current signal is (Standard current is ), but the actual electronic jacquard machine runs smoothly, so it is judged that there may be noise interference; the preprocessing process is as follows: the working voltage signal fluctuation exceeds the standard voltage, but the electronic jacquard machine is not overloaded, which is judged to be high-frequency noise interference; the working current signal exceeds the normal range, which is judged to be current spike noise; for the working voltage signal: the 5-point sliding average method is used to calculate the current value and the average value of the two moments before and after, and the average working voltage signal is obtained as ; For the working current signal: use median filtering, take the middle value of the last three sampling points, and get the average working current signal as ; Calculate the power value: , which is in line with the rated power range of the electronic jacquard machine; the generated working voltage signal after denoising is 220.5V and the working current signal is .

[0031] Perform judgment operations on the denoised working voltage signal and working current signal, Preset standard working voltage signal threshold And the standard working current signal threshold ; The denoised working voltage signal and working current signal are compared with the standard working voltage signal threshold and the standard working current signal threshold. The specific comparison process is as follows: The working voltage signal and working current signal after denoising at the same acquisition time are respectively recorded as as well as ; like and When the working voltage signal of the electronic jacquard machine is And the working current signal All are normal and marked as normal signals; like and When the working voltage signal of the electronic jacquard machine is There is an abnormality, working current signal Normal, marked as abnormal working voltage signal; like and When the working voltage signal of the electronic jacquard machine is Normal, working current signal If there is an abnormality, it will be marked as an abnormal working current signal; like and When the working voltage signal of the electronic jacquard machine is And the working current signal All are abnormal, marked as abnormal working voltage and current signals; The normal signal, the abnormal working voltage signal, the abnormal working current signal, and the abnormal working voltage and current signal are marked as judgment signals.

[0032] It should be further explained that, in the specific implementation process, the specific process of extracting the characteristics of the judgment signal and obtaining the surge signal characteristic data includes: Acquire a judgment signal; if the judgment signal is a normal signal, do not perform feature extraction processing; If the judgment signal is an abnormal working voltage signal, feature extraction processing is performed on the abnormal working voltage signal. The specific process is as follows: Acquire the working voltage signals at several preceding and following acquisition moments, and stop acquiring when the working voltage signals at the several preceding and following acquisition moments are abnormal working voltage signals; and use the acquired working voltage signals at the several acquisition moments to provide data support for the abnormal working voltage signal at the corresponding acquisition moment; For example, if the working voltage signals of the previous and next 10 sampling moments are obtained, and the working voltage signal of the previous 10 sampling moments rises rapidly from the normal working voltage signal 220V to 240V, and the sampling interval is 0.01 seconds, the formula for obtaining the rising slope is: ;in, for , for seconds; therefore, the rising slope ; According to the working voltage signals at the last 10 acquisition moments, the working voltage drops rapidly from the abnormal signal 240V to 220V, with an acquisition interval of 0.01 seconds. The formula for obtaining the falling slope is: ;in, for , for seconds; therefore, the falling slope ; Mark the working voltage signals and working voltage abnormality signals of the 10 acquisition moments before and after as a voltage array ; According to the standard working voltage signal threshold , the two voltage variables are initialized and are the peak working voltage signal and the valley working voltage signal, recorded as as well as , for voltage array The first element of the traversal operation is performed. If the voltage array The first element of the corresponding working voltage signal is greater than , then update , if the voltage array The first element of the corresponding working voltage signal is less than , then update ; And so on, get the peak working voltage signal and valley operating voltage signal ; Perform FFT transformation on the working voltage signal and working voltage abnormality signal at the 10 acquisition moments before and after to obtain the voltage frequency domain representation at the corresponding acquisition moment. ; Get the voltage frequency domain to represent 500 positive frequency points, and get the power spectrum after taking the square of the modulus for: ;in, is the complex number representation of the kth frequency component; Traverse the power values ​​of 500 positive frequency points and record them as the total voltage energy of the target frequency band ; The total voltage energy of the target frequency band for: ; The rising slope , downslope , peak operating voltage signal , valley working voltage signal And the total voltage energy of the target frequency band Recorded as voltage surge signal characteristic data.

[0033] If the judgment signal is an abnormal working current signal, feature extraction processing is performed on the abnormal working voltage signal. The specific process is as follows: Acquire the working current signals at the corresponding several acquisition moments before and after, and stop acquiring when the working current signals at the corresponding several acquisition moments before and after are abnormal working current signals; and use the acquired working current signals at the several acquisition moments to provide data support for the abnormal working current signal at the corresponding acquisition moment; For example, if the working current signals of the five acquisition moments before and after are obtained, the average working current signal of the first five acquisition moments is obtained according to the working current signals of the five acquisition moments before and after. And the average working current signal of the last 5 acquisition moments ; If the average working current signal of the first 5 acquisition moments The abnormal working current signal rises from 12A to 16A, and the sampling interval is 0.01 seconds. The formula for obtaining the rising current change rate is: ;in, for , for seconds; therefore, the rising slope ; The working current abnormal signal 16A drops rapidly to the average working current signal of the last 5 acquisition moments The current is 14A, the sampling interval is 0.01 seconds, and the formula for obtaining the falling current change rate is: ;in, for , for seconds; therefore, the falling slope ; Mark the working current signals and working current abnormal signals at the five acquisition moments before and after as a current array ; According to the standard working current signal threshold , the two initial current variables are obtained as peak working current signal and valley working current signal, recorded as as well as , for the current array The first element of the traversal operation is performed, if the current array The first element of the working current signal is greater than , then update , if the current array The first element of the corresponding working voltage signal is less than , then update ; And so on, get the peak working current signal and valley operating current signal ; Perform FFT transformation on the working current signal and the abnormal working current signal at the five acquisition moments before and after to obtain the current frequency domain representation at the corresponding acquisition moment ; Get the 500 positive frequency points of the current frequency domain, take the square of the modulus and get the power spectrum for: ;in, is the complex number representation of the kth frequency component; Traverse the power values ​​of 500 positive frequency points and record them as the total current energy of the target frequency band ; The total current energy of the target frequency band for: ; The rising current change rate , falling current change rate , Peak operating current signal , valley working current signal And the total current energy of the target frequency band Recorded as voltage surge signal characteristic data.

[0034] If the judgment signal is an abnormal working voltage and current signal, feature extraction processing is performed on the abnormal working voltage and current signal. The specific process is as follows: Acquire the working voltage signal and the working current signal corresponding to several preceding and subsequent acquisition moments, and stop acquiring when the working voltage signal corresponding to the several preceding and subsequent acquisition moments is an abnormal working voltage signal or when the working current signal corresponding to the several preceding and subsequent acquisition moments is an abnormal working current signal; and use the acquired working voltage signals and working current signals at the several acquisition moments to provide data support for the abnormal working voltage signal and the abnormal working current signal at the corresponding acquisition moment; For example, based on the above-mentioned voltage surge signal characteristic data and current surge signal characteristic data acquisition process, the voltage surge signal characteristic data and current surge signal characteristic data corresponding to the acquisition time are obtained; Based on the Pearson correlation coefficient technology, a correlation calculation is performed on the voltage surge signal characteristic data and the current surge signal characteristic data to obtain a correlation coefficient; For example, the working current signal and working voltage signal at 100 acquisition moments before and after acquisition are calculated according to the correlation coefficient formula: ;in, is the correlation coefficient, is the current value at the corresponding acquisition moment, is the voltage value at the corresponding acquisition moment, is the current mean value at all acquisition moments, is the voltage mean value at all acquisition moments; The corresponding voltage surge signal characteristic data and current surge signal characteristic data and correlation coefficient Recorded as comprehensive surge signal characteristic data; The voltage surge signal characteristic data, the current surge signal characteristic data and the comprehensive surge signal characteristic data are recorded as surge signal characteristic data.

[0035] It should be further explained that, during the specific implementation process, the specific process of formulating a surge suppression plan includes: The surge suppression scheme includes a voltage surge suppression scheme, a current surge suppression scheme, and a voltage and current surge suppression scheme; The voltage surge suppression solution specifically includes: In the voltage surge suppression of electronic jacquard machines, the working voltage signal is limited to the standard working voltage signal threshold Below, the surge energy is monitored by voltage transformer at the same time. If the total voltage energy of the target frequency band is If the threshold is exceeded, it will automatically switch to derating mode to avoid MOV overheating and aging. Based on the TVS parasitic capacitance and RC snubber circuit, the rising edge time of the PWM control signal is adjusted from 15ns to 20ns to ensure the phase shift of the abnormal working voltage signal. At the same time, the adaptive filtering algorithm is used to suppress the oscillation of the abnormal working voltage signal, compressing the steady-state ripple of the abnormal working voltage signal from 8% to below 3%, ultimately achieving the suppression of the abnormal working voltage signal and obtaining the suppressed working voltage signal, taking into account both equipment safety and signal accuracy.

[0036] The current surge suppression solution specifically includes: In the AC motor power supply circuit, a composite solution of AC solid-state relay and self-recovery fuse is deployed: when the instantaneous value of the current exceeds the standard working current signal threshold When the AC solid state relay is The main circuit is cut off and the self-recovery fuse triggers the high impedance state, limiting the residual current to After the fault is cleared, the AC solid-state relay automatically resets according to the temperature sensor unit and the voltage zero-crossing detection signal to avoid secondary impact; for the reverse electromotive force generated by the AC solenoid valve on and off, Calculate the current change rate in real time and dynamically adjust the inductor core saturation point to suppress the current change rate to Below, high-precision current transformer and Sampling, combined with temperature compensation algorithm to eliminate sampling error, so that the current feedback accuracy reaches ; Add RC absorption network and varistor to suppress the current ringing caused by AC phase switching, and The communication interface synchronizes the protection status of each node to ensure the bit error rate under abnormal working current signals , and obtain the suppressed working current signal; The voltage surge suppression scheme and the current surge suppression scheme are integrated to obtain a voltage and current surge suppression scheme.

[0037] It should be further explained that, in the specific implementation process, the specific process of performing amplitude judgment processing on the surge signal characteristic data, obtaining the amplitude judgment result, and executing the corresponding surge suppression solution includes: Based on the surge signal characteristic data, the corresponding voltage surge signal amplitude and current surge signal amplitude are obtained; Preset voltage amplitude threshold and current amplitude threshold ; When the voltage surge signal amplitude is greater than the voltage amplitude threshold When the voltage surge suppression scheme is executed, the working voltage signal of the electronic jacquard machine is adjusted to obtain the working state of the electronic jacquard machine after adjustment; When the current surge signal amplitude is greater than the current amplitude threshold When the current surge suppression scheme is executed, the working current signal of the electronic jacquard machine is adjusted to obtain the working state of the electronic jacquard machine after adjustment; When the voltage surge signal amplitude is greater than the voltage amplitude threshold And the current surge signal amplitude is greater than the current amplitude threshold When the voltage and current surge suppression scheme is executed, the working current signal and the working voltage signal of the electronic jacquard machine are adjusted to obtain the working state of the electronic jacquard machine after adjustment.

[0038] It should be further explained that, in the specific implementation process, the working state of the electronic jacquard machine and the working state of the electronic jacquard machine after the surge suppression scheme is implemented are compared and analyzed to obtain the surge suppression attenuation rate. The specific process includes: Real-time display of the working status of the electronic jacquard machine and the working status of the electronic jacquard machine after the surge suppression solution is executed; Obtaining the operating current signal of an electronic jacquard machine without implementing a surge suppression solution And the working voltage signal And implement surge suppression scheme for electronic jacquard machine's working current signal And the working voltage signal ; The working current signal of the electronic jacquard machine without implementing the surge suppression solution And the working current signal , obtain the current surge suppression attenuation rate 1. The current surge suppression attenuation rate 1 is: ; The working voltage signal of the electronic jacquard machine is not implemented according to the surge suppression solution And the working voltage signal , obtain the voltage surge suppression attenuation rate 2. The voltage surge suppression attenuation rate 2 is: ; According to the current surge suppression attenuation rate 1 and voltage surge suppression attenuation rate 2. Obtain surge suppression attenuation rate for: .

[0039] It should be further explained that, in the specific implementation process, the specific process of building an intelligent optimization model for surge protection includes: Obtaining several sets of surge suppression attenuation rates, surge signal characteristic data, surge suppression solutions, and electronic jacquard machine operating parameters; For several groups of surge signal characteristic data, standard working voltage signal threshold And the standard working current signal threshold Group and label them, is a natural number; Will Set up several groups of surge suppression attenuation rate, surge signal characteristic data, surge suppression scheme, electronic jacquard machine operating parameters, standard working voltage signal threshold And the standard working current signal threshold As sample data, and is less than A natural number, and using the sample data, obtain the mean of the sample data, recorded as a sample set; The remaining groups of surge suppression attenuation rates, surge signal characteristic data, surge suppression solutions, electronic jacquard machine operating parameters, standard operating voltage signal thresholds And the standard working current signal threshold As a test set; A training sample set is formed according to the sample set and the test set; Based on convolutional network neural network, a standard intelligent optimization model is constructed; The training sample set is input into the standard intelligent optimization model, the standard intelligent optimization model is trained, and the trained standard intelligent optimization model is obtained, and the trained standard intelligent optimization model is recorded as the anti-surge intelligent optimization model.

[0040] It should be further explained that, in the specific implementation process, the specific process of adjusting the working parameters and protecting the electronic jacquard machine according to the surge protection optimization index includes: According to the anti-surge intelligent optimization model, the anti-surge optimization index under the current environmental factors is generated. , the surge protection optimization index for: ;in, is the weight coefficient of the working voltage signal, is the weight coefficient of the working current signal, is the surge suppression attenuation rate The weight coefficient of Indicates the actual working voltage signal, Indicates the actual working current signal, The proportionality coefficient indicating the degree of temperature influence; Preset standard surge protection optimization index ; If the dynamic sound index , then the electronic jacquard machine works well under the current environmental conditions; If the surge protection optimization index , then there is room for optimization of the electronic jacquard machine under the current environmental conditions, and the working parameters of the surge suppression scheme of the electronic jacquard machine should be adjusted and protected.

[0041] like Figure 2 As shown, a surge protection system for an electronic jacquard machine includes: a surge detection module, a signal processing module, a surge suppression module, a status display module and an intelligent optimization module; The surge detection module is used to monitor the working voltage signal, working current signal and operating parameters of the electronic jacquard machine in real time, and perform judgment processing to obtain a judgment signal; The signal processing module is used to perform feature extraction processing on the judgment signal to obtain surge signal feature data; The surge suppression module is used to formulate a surge suppression plan, perform amplitude judgment processing, obtain the amplitude judgment result, and execute the corresponding surge suppression plan; The status display module is used to compare and analyze the working status of the electronic jacquard machine before and after the surge suppression scheme is implemented, and obtain the surge suppression attenuation rate; The intelligent optimization module is used to construct an anti-surge intelligent optimization model, thereby obtaining an anti-surge optimization index, and adjusting and protecting the working parameters of the electronic jacquard machine according to the anti-surge optimization index.

[0042] The above embodiments are only used to illustrate the technical method of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A surge protection method for an electronic jacquard machine, characterized in that: include: Collecting the working voltage signal, working current signal and operating parameters of the electronic jacquard machine, judging and processing the working voltage signal and working current signal to obtain a corresponding judgment signal; Performing feature extraction processing on the judgment signal to obtain surge signal feature data; formulating a surge suppression plan, and performing amplitude judgment processing on the surge signal feature data to obtain an amplitude judgment result, and executing a corresponding surge suppression plan based on the amplitude judgment result; Real-time display of the working status of the electronic jacquard machine and the working status of the electronic jacquard machine after the surge suppression solution is implemented, and comparative analysis is performed to obtain the surge suppression attenuation rate; Based on the surge suppression attenuation rate, surge signal characteristic data, surge suppression scheme and electronic jacquard machine operating parameters, an intelligent surge protection optimization model is constructed to obtain the surge protection optimization index. The operating parameters of the electronic jacquard machine are adjusted and protected according to the surge protection optimization index.

2. The method for preventing surge in an electronic jacquard machine according to claim 1, wherein: The process of collecting the working voltage signal, working current signal and operating parameters of the electronic jacquard machine includes: A non-contact sensing unit is provided, and a collection cycle is set. The collection cycle includes several collection moments. The working current signal and the working voltage signal of the electronic jacquard machine during operation are collected according to the collection moments of the non-contact sensing unit. The laser sensing unit, the infrared thermal imaging sensing unit and the binocular vision sensing unit are synchronously deployed to collect the vibration, temperature and mechanical action timing data of the electronic jacquard machine during operation in real time. The vibration, temperature and mechanical action timing data are recorded as the electronic jacquard machine operation parameters.

3. The method for preventing surge in an electronic jacquard machine according to claim 2, wherein: The process of judging and processing the working voltage signal and the working current signal to obtain the corresponding judgment signal includes: The collected working voltage signal and working current signal are subjected to denoising, and the denoised working voltage signal and working current signal are recorded as as well as ; Preset standard working voltage signal threshold And the standard working current signal threshold ; like and When the working voltage signal of the electronic jacquard machine is And the working current signal All are normal and marked as normal signals; like and When the working voltage signal of the electronic jacquard machine is There is an abnormality, working current signal Normal, marked as abnormal working voltage signal; like and When the working voltage signal of the electronic jacquard machine is Normal, working current signal If there is an abnormality, it will be marked as an abnormal working current signal; like and When the working voltage signal of the electronic jacquard machine is And the working current signal All are abnormal, marked as abnormal working voltage and current signals; The normal signal, the abnormal working voltage signal, the abnormal working current signal, and the abnormal working voltage and current signal are marked as judgment signals.

4. The method for preventing surge in an electronic jacquard machine according to claim 3, wherein: The process of feature extraction processing of the judgment signal includes: Acquire a judgment signal; if the judgment signal is a normal signal, do not perform feature extraction processing; If the judgment signal is an abnormal working voltage signal, feature extraction processing is performed on the abnormal working voltage signal, and the process is as follows: Obtain the working voltage signal at n acquisition moments before and after, and obtain the rising slope and the descending slope ; Mark the working voltage signals and working voltage abnormality signals at each of the n acquisition moments before and after as a voltage array ; According to the standard working voltage signal threshold , obtain the peak operating voltage signal and valley operating voltage signal ; Obtain the voltage frequency domain representation corresponding to the acquisition time , obtain T positive frequency points of the voltage frequency domain representation and obtain the power spectrum , traverse the power values ​​of T positive frequency points to obtain the total voltage energy of the target frequency band ; Will 、 、 、 as well as Recorded as voltage surge signal characteristic data; If the judgment signal is an abnormal working current signal, feature extraction processing is performed on the abnormal working current signal, and the process is as follows: Obtain the working current signal at m acquisition moments before and after, and obtain the rising current change rate And the falling current change rate ; Mark the working current signals and working current abnormal signals at m acquisition moments before and after as a current array ; According to the standard working current signal threshold , obtain the peak operating current signal and valley operating current signal ; Obtain the current frequency domain representation corresponding to the acquisition time , obtain the power spectrum corresponding to the acquisition time ; Traverse the power values ​​of Q positive frequency points to obtain the total current energy of the target frequency band ; Will 、 、 、 as well as Recorded as voltage surge signal characteristic data; If the judgment signal is an abnormal working voltage and current signal, feature extraction processing is performed on the abnormal working voltage and current signal. The process is as follows: Based on the above-mentioned voltage surge signal characteristic data and current surge signal characteristic data acquisition process, the voltage surge signal characteristic data and the current surge signal characteristic data corresponding to the acquisition time are obtained; Based on the Pearson correlation coefficient technology, a correlation calculation is performed on the voltage surge signal characteristic data and the current surge signal characteristic data to obtain a correlation coefficient; The working current signal and working voltage signal at each s acquisition time before and after the acquisition are calculated according to the correlation coefficient formula: ;in, is the correlation coefficient, is the current value at the corresponding acquisition moment, is the voltage value at the corresponding acquisition moment, is the current mean value at all acquisition moments, is the voltage mean value at all acquisition moments; The corresponding voltage surge signal characteristic data, current surge signal characteristic data and correlation coefficient Recorded as comprehensive surge signal characteristic data; The voltage surge signal characteristic data, the current surge signal characteristic data and the comprehensive surge signal characteristic data are recorded as surge signal characteristic data.

5. The method for preventing surge in an electronic jacquard machine according to claim 4, wherein: The process of developing a surge suppression solution includes: The surge suppression scheme includes a voltage surge suppression scheme, a current surge suppression scheme, and a voltage and current surge suppression scheme; The voltage surge suppression solution includes: In the voltage surge suppression of electronic jacquard machines, the working voltage signal is limited to the standard working voltage signal threshold Below, the surge energy is monitored by voltage transformer at the same time. If the total voltage energy of the target frequency band is If the threshold is exceeded, it will automatically switch to the derating mode; at the same time, the adaptive filtering algorithm is used to suppress the oscillation of the abnormal working voltage signal, thereby suppressing the abnormal working voltage signal and obtaining the suppressed working voltage signal; The current surge suppression solution includes: When the instantaneous current value is detected to exceed the standard working current signal threshold When the AC solid state relay is The main circuit is cut off internally and the self-recovery fuse triggers the high-impedance state. After the fault is cleared, it automatically resets according to the temperature sensing unit and the voltage zero-crossing detection signal to avoid secondary impact. Calculate the current change rate in real time and dynamically adjust the inductor core saturation point to suppress the current change rate to Following, and obtain the suppressed working current signal; The voltage surge suppression scheme and the current surge suppression scheme are integrated to obtain a voltage and current surge suppression scheme.

6. The method for preventing surges in an electronic jacquard machine according to claim 5, characterized in that: The process of performing amplitude judgment processing on surge signal characteristic data includes: Based on the surge signal characteristic data, the corresponding voltage surge signal amplitude and current surge signal amplitude are obtained; Preset voltage amplitude threshold and current amplitude threshold ; When the voltage surge signal amplitude is greater than the voltage amplitude threshold When the voltage surge suppression scheme is executed, the working voltage signal of the electronic jacquard machine is adjusted to obtain the working state of the electronic jacquard machine after adjustment; When the current surge signal amplitude is greater than the current amplitude threshold When the current surge suppression scheme is executed, the working current signal of the electronic jacquard machine is adjusted to obtain the working state of the electronic jacquard machine after adjustment; When the voltage surge signal amplitude is greater than the voltage amplitude threshold And the current surge signal amplitude is greater than the current amplitude threshold When the voltage and current surge suppression scheme is executed, the working current signal and the working voltage signal of the electronic jacquard machine are adjusted to obtain the working state of the electronic jacquard machine after adjustment.

7. The method for preventing surges in an electronic jacquard machine according to claim 6, wherein: Compare and analyze the working status of the electronic jacquard machine and the working status of the electronic jacquard machine after the surge suppression scheme is implemented to obtain the surge suppression attenuation rate The process includes: Obtaining the operating current signal of an electronic jacquard machine without implementing a surge suppression solution And the working voltage signal And implement surge suppression scheme electronic jacquard machine working current signal And the working voltage signal ; The working current signal of the electronic jacquard machine without implementing the surge suppression solution And the working current signal , obtain the current surge suppression attenuation rate 1. The current surge suppression attenuation rate 1 is: ； The working voltage signal of the electronic jacquard machine is not implemented according to the surge suppression solution And the working voltage signal , obtain the voltage surge suppression attenuation rate 2. The voltage surge suppression attenuation rate 2 is: ； According to the current surge suppression attenuation rate 1 and voltage surge suppression attenuation rate 2. Obtain surge suppression attenuation rate for: 。 8. The method for preventing surges in an electronic jacquard machine according to claim 7, wherein: The process of building an intelligent surge protection optimization model and obtaining a surge protection optimization index includes: Obtaining several sets of surge suppression attenuation rates, surge signal characteristic data, surge suppression solutions, and electronic jacquard machine operating parameters; For several groups of surge signal characteristic data, standard working voltage signal threshold And the standard working current signal threshold Group and label them, is a natural number; Will Set up several groups of surge suppression attenuation rate, surge signal characteristic data, surge suppression scheme, electronic jacquard machine operating parameters, standard working voltage signal threshold And the standard working current signal threshold As sample data, and is less than A natural number, and using the sample data, obtain the mean of the sample data, recorded as a sample set; The remaining groups of surge suppression attenuation rates, surge signal characteristic data, surge suppression solutions, electronic jacquard machine operating parameters, standard operating voltage signal thresholds And the standard working current signal threshold As a test set; A training sample set is formed according to the sample set and the test set; Based on convolutional network neural network, a standard intelligent optimization model is constructed; The training sample set is input into the standard intelligent optimization model, the standard intelligent optimization model is trained, and the standard intelligent optimization model after training is obtained. The standard intelligent optimization model after training is recorded as the anti-surge intelligent optimization model, and the anti-surge optimization index under the current environmental factors is generated. , the surge protection optimization index for: ;in, is the weight coefficient of the working voltage signal, is the weight coefficient of the working current signal, is the surge suppression attenuation rate The weight coefficient of Indicates the actual working voltage signal, Indicates the actual working current signal, A proportionality factor that indicates the degree of temperature influence.

9. A surge protection system for an electronic jacquard machine, which implements the surge protection method for an electronic jacquard machine according to any one of claims 1 to 8, characterized in that: include: Surge detection module, signal processing module, surge suppression module, status display module and intelligent optimization module; The surge detection module is used to monitor the working voltage signal, working current signal and operating parameters of the electronic jacquard machine in real time, and perform judgment processing to obtain a judgment signal; The signal processing module is used to perform feature extraction processing on the judgment signal to obtain surge signal feature data; The surge suppression module is used to formulate a surge suppression plan, perform amplitude judgment processing, obtain the amplitude judgment result, and execute the corresponding surge suppression plan; The status display module is used to compare and analyze the working status of the electronic jacquard machine before and after the implementation of the surge suppression solution to obtain the surge suppression attenuation rate; The intelligent optimization module is used to construct an anti-surge intelligent optimization model, thereby obtaining an anti-surge optimization index, and adjusting and protecting the working parameters of the electronic jacquard machine according to the anti-surge optimization index.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and the computer program can be executed by a processor to implement the surge protection method for an electronic jacquard machine according to any one of claims 1 to 8.

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