Stirring rod position detection data processing method and system

Abstract

The invention provides a stirring rod position detection data processing method and system, belongs to the technical field of equipment detection, and is used for processing pre-acquired analog electric signals generated by cutting a magnetic field at different positions by a stirring rod of target stirring equipment at a target rotating speed. Comprising the following steps: processing analog electric signals generated by a stirring rod at different positions to generate corresponding digital signals; performing spectral analysis on the corresponding digital signals of the stirring rod at different positions to obtain corresponding signal characteristic values; and according to the corresponding signal characteristic values of the stirring rod at different positions, establishing a stirring rod position detection model of the target stirring equipment at the target rotating speed. According to the method, a data calibration mode is used, the stirring rod position detection model of the target stirring equipment at the target rotating speed is established for subsequent position detection of the stirring rod, and position detection of the stirring rod of the stirring equipment is achieved on the premise that production procedures are not affected and the structure of a stirring system is not damaged.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment detection, and in particular to a stirring rod position detection data processing method and system. Background Art

[0002] After long-term operation, the stirring rod of slurry mixing equipment (such as mixing tank) may scrape against the tank wall due to mechanical aging. The metal debris generated by scraping against the tank wall will contaminate the entire tank slurry and damage the mixing equipment, resulting in economic losses and affecting production efficiency. Therefore, it is necessary to detect the position of the stirring rod online, and issue a prompt or alarm when the stirring rod reaches the dangerous distance, so as to help the staff take preventive measures.

[0003] In the existing technology, the production is usually stopped for maintenance, which has low production efficiency. This method cannot be monitored online and has production risks. In addition, there is a proposal to embed a sensor unit in the stirring rod and add a corresponding detection device outside the stirring barrel for detection, but this will destroy the stirring rod structure, increase the process, and the embedded sensor unit will have the risk of contaminating the slurry.

[0004] Therefore, how to detect the position of the stirring rod of the stirring equipment without affecting the production process and destroying the structure of the stirring system is an urgent problem to be solved. Summary of the invention

[0005] The present invention provides a stirring rod position detection data processing method and system, which are used to solve the problem in the prior art that it is difficult to detect the stirring rod position without affecting the production process and without destroying the stirring system structure.

[0006] In the first aspect, the present invention provides a stirring rod position detection data processing method for processing pre-acquired analog electrical signals generated by a stirring rod of a target stirring device cutting a magnetic field at different positions at a target rotational speed, comprising: processing the analog electrical signals generated by the stirring rod at different positions to generate corresponding digital signals; performing spectrum analysis on the digital signals corresponding to the stirring rod at different positions to obtain corresponding signal characteristic values; establishing a stirring rod position detection model for the target stirring device at a target rotational speed according to the signal characteristic values ​​corresponding to the stirring rod at different positions; wherein the input of the stirring rod position detection model is the signal characteristic value corresponding to the analog electrical signal at the target rotational speed, and the output is the position of the stirring rod.

[0007] According to the stirring rod position detection data processing method provided by the present invention, the analog electrical signal generated by the stirring rod at any position is processed to generate a digital signal, including: performing a first preprocessing on the analog electrical signal; the content of the first preprocessing includes one or more of the following preprocessing operations: filtering processing, signal amplification processing; performing analog-to-digital conversion on the preprocessed analog signal to generate an initial digital signal; performing a second preprocessing on the initial digital signal; the content of the second preprocessing includes one or more of the following preprocessing operations: digital smoothing processing, digital filtering processing and environmental noise compensation processing.

[0008] According to the stirring rod position detection data processing method provided by the present invention, a spectrum analysis is performed on the digital signal corresponding to the stirring rod at any position to obtain a signal characteristic value, including: performing Fourier transform on the digital signal to obtain the spectrum of the digital signal; determining the frequency range according to the target rotation speed of the stirring rod; calculating the spectrum energy of the spectrum of the digital signal within the frequency range, and using the spectrum energy as the signal characteristic value.

[0009] According to the stirring rod position detection data processing method provided by the present invention, a stirring rod position detection model for the target stirring device at the target speed is established according to the signal characteristic values ​​corresponding to the stirring rod at different positions, including: performing numerical fitting on the position of the stirring rod and the corresponding signal characteristic values ​​to obtain a fitting function; using the fitting function as the stirring rod position detection model, and marking the target stirring device and target speed to which the stirring rod position detection model is applicable.

[0010] According to the stirring rod position detection data processing method provided by the present invention, a stirring rod position detection model for the target stirring device at the target speed is established according to the signal characteristic values ​​corresponding to the stirring rod at different positions, including: taking the position of the stirring rod and the corresponding signal characteristic values ​​as training data; using the training data to train a machine learning model; wherein the input of the machine learning model is the signal characteristic value, and the output is the position; using the trained machine learning model as the stirring rod position detection model, and marking the target stirring device and target speed to which the stirring rod position detection model is applicable.

[0011] According to the stirring rod position detection data processing method provided by the present invention, the position of the stirring rod is characterized by the distance between the stirring rod and the side wall of the target stirring device.

[0012] The method for processing stirring rod position detection data provided by the present invention further includes: determining the duration of the acquired analog electrical signal according to a target rotation speed of the stirring rod of the target stirring device.

[0013] In a second aspect, the present invention further provides a stirring rod position detection system for a stirring device, comprising: a magnetic field generating module, a magnetic field detecting module, and a detection data processing module;

[0014] The magnetic field generating module is used to generate a magnetic field; wherein the magnetic field penetrates the current stirring device and acts on the stirring rod to be tested of the current stirring device;

[0015] The magnetic field detection module is used to sense the dynamic magnetic field generated when the stirring rod to be tested cuts the magnetic field at a set rotation speed, and generate an analog electrical signal;

[0016] The detection data processing module is used to process the analog electrical signal to generate a digital signal, perform spectrum analysis on the digital signal, obtain signal characteristic values, input the signal characteristic values ​​into the corresponding stirring rod position detection model, and output the position of the stirring rod to be detected;

[0017] The stirring rod position detection model is constructed using any of the stirring rod position detection data processing methods described above.

[0018] According to the stirring rod position detection system of the stirring device provided by the present invention, the magnetic field generating module and the magnetic field detecting module are located on the same side of the current stirring device;

[0019] The magnetic field generating module includes a permanent magnet, and the magnetic field detecting module includes two induction coils; the two induction coils are coaxially arranged at both ends of the permanent magnet, and the axes are perpendicular to the cylinder surface of the current stirring device;

[0020] Among them, the induction coil farther from the current stirring device is used to sense the dynamic magnetic field generated when the stirring rod cuts the magnetic field, and generate a first electromotive force signal; the induction coil closer to the current stirring device is used to sense the dynamic magnetic field generated when the stirring rod cuts the magnetic field, and generate a second electromotive force signal;

[0021] The magnetic field detection module is also used to perform differential processing on the second electromotive force signal and the first electromotive force to generate an analog electrical signal to be processed.

[0022] In a third aspect, the present invention provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any of the above-mentioned methods for processing stirring rod position detection data are implemented.

[0023] In a fourth aspect, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of any of the above-described methods for processing stirring rod position detection data.

[0024] The stirring rod position detection data processing method and system provided by the present invention processes the analog electrical signals generated by the stirring rod of the target stirring device cutting the magnetic field at different positions at the target rotational speed, and uses data calibration to establish a stirring rod position detection model of the target stirring device at the target rotational speed for use in subsequent stirring rod position detection, thereby realizing position detection of the stirring rod of the stirring device without affecting the production process and without destroying the structure of the stirring system; and the present invention is suitable for stirring devices with any number of stirring rods, any structure, and any rotational speed, and has high precision in stirring rod position detection for different types of stirring devices.

[0025] In the process of data processing, the present invention uses the spectrum energy within a specific frequency range as the signal characteristic value of the stirring rod instead of a single spectrum peak value, which can improve the detection accuracy of the stirring rod position. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a flow chart of the stirring rod position detection data processing method provided by the present invention;

[0028] Figure 2 It is a structural schematic diagram of a stirring rod position detection system for a stirring device provided by the present invention;

[0029] Figure 3 It is a schematic diagram of the principle of position detection using electromagnetic induction provided by the present invention;

[0030] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that, in the description of the embodiments of the present invention, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0033] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0034] Combine the following Figure 1-Figure 4 The stirring rod position detection data processing method and system provided by the embodiments of the present invention are described.

[0035] Figure 1 is a flow chart of a method for processing stirring rod position detection data provided by the present invention, which is used to process the analog electrical signal (i.e. stirring rod position detection data) generated by the stirring rod of the target stirring device cutting the magnetic field at different positions at the target speed, such as Figure 1 As shown, including but not limited to the following steps:

[0036] Step 101: Processing analog electrical signals generated by a stirring rod at different positions to generate corresponding digital signals.

[0037] The present invention may use the distance between the stirring rod and the side wall of the target stirring device to characterize the position of the stirring rod.

[0038] The stirring rod in the present invention is in a pre-set magnetic field, and the stirring rod (conductive material) cuts the magnetic field and generates eddy currents inside the stirring rod, which then generates a dynamic magnetic field. The present invention can set one or more magnetic sensors (such as Hall effect sensors) around the stirring device, and these magnetic sensors can capture the changes in the dynamic magnetic field and convert them into analog electrical signals.

[0039] The present invention can use an analog-to-digital converter (ADC) to complete the conversion of analog electrical signals to digital signals. At the same time, the present invention can also pre-process the analog electrical signals before analog-to-digital conversion through signal processing circuits such as amplifiers and filters to ensure the quality of the analog electrical signals.

[0040] As an optional embodiment, the present invention processes the analog electrical signal generated by the stirring rod at any position to generate a digital signal, including but not limited to the following steps:

[0041] (1) Performing a first preprocessing on the analog electrical signal; the first preprocessing includes one or more of the following preprocessing operations: filtering processing, signal amplification processing.

[0042] The present invention may use an analog filter (such as a low-pass filter, a high-pass filter, or a band-pass filter) to remove unwanted frequency components.

[0043] The present invention can enhance the amplitude of the analog electrical signal through the amplifier, especially when the collected analog electrical signal is weak, so as to better utilize the analog-to-digital converter for analog-to-digital conversion.

[0044] (2) Perform analog-to-digital conversion on the preprocessed analog signal to generate an initial digital signal.

[0045] (3) performing a second preprocessing on the initial digital signal; the second preprocessing includes one or more of the following preprocessing operations: digital smoothing processing, digital filtering processing, and environmental noise compensation processing.

[0046] The present invention can use moving average or other types of digital smoothing algorithms to reduce random fluctuations in digital signals; the present invention can also be designed according to specific needs and use digital filters to remove interference of specific frequencies; if there is a continuous noise source in the environment, the present invention can also compensate by pre-measuring the background noise and subtracting this part of the noise from the signal.

[0047] Step 102: Perform spectrum analysis on digital signals corresponding to the stirring rod at different positions to obtain corresponding signal characteristic values.

[0048] The present invention performs frequency domain analysis on each segment of the collected digital signal to obtain a spectrum diagram; further, some frequency components or parameters (such as peak frequency, energy distribution, etc.) can be determined from the spectrum diagram as signal characteristic values. These signal characteristic values ​​can well reflect the changing characteristics of the magnetic field generated by the stirring rod at different positions.

[0049] Step 103: Establish a stirring rod position detection model for the target stirring device at a target speed based on the signal characteristic values ​​corresponding to the stirring rod at different positions; wherein the input of the stirring rod position detection model is the signal characteristic value corresponding to the analog electrical signal at the target speed, and the output is the position of the stirring rod.

[0050] The stirring rod position detection model in the present invention is targeted at a specific target stirring device and established at a target speed. The stirring rod position prediction model can be a machine learning model, such as a support vector machine, a neural network, etc., or it can be a signal characteristic value-stirring rod position function formed by a numerical fitting algorithm.

[0051] As an optional embodiment, the stirring rod position detection data processing method provided by the present invention, when the stirring rod position detection model is a machine learning model, includes but is not limited to the following steps:

[0052] (1) The position of the stirring rod and the corresponding signal feature value are used as training data.

[0053] The present invention can pair each position and its corresponding signal feature value to form training data.

[0054] Optionally, when selecting training data, the present invention ensures that the training data covers most possible position ranges and has a sufficient sample size to ensure the generalization ability of the model.

[0055] (2) Using the training data, train a machine learning model; wherein the input of the machine learning model is the signal feature value, and the output is the position.

[0056] Among them, the machine learning model can be a decision tree regression model, a support vector machine, a random forest or a neural network, etc.

[0057] (3) The trained machine learning model is used as the stirring rod position detection model, and the target stirring device and target speed applicable to the stirring rod position detection model are marked.

[0058] As an optional embodiment, the stirring rod position detection data processing method provided by the present invention, when the stirring rod position detection model is a fitting function, further includes but is not limited to the following steps:

[0059] (1) Perform numerical fitting on the position of the stirring rod and the corresponding signal characteristic value to obtain a fitting function.

[0060] The present invention can use the least square method or other numerical fitting algorithms to perform numerical fitting, wherein the fitting function can be a polynomial function.

[0061] (2) The fitting function is used as the stirring rod position detection model, and the target stirring equipment and target speed applicable to the stirring rod position detection model are marked.

[0062] The present invention adds applicable target stirring equipment and target rotation speed to the model, so as to facilitate the subsequent establishment of a stirring rod position detection model library. When performing position detection of stirring rods of stirring equipment of different types and rotation speeds, the corresponding model can be directly called according to the model annotation.

[0063] It should be noted that abnormal data will inevitably appear in the signal characteristic values ​​and position data used to construct the stirring rod position detection model. The present invention can analyze the multiple pairs of signal characteristic values ​​and position data obtained and eliminate the abnormal data to ensure the prediction accuracy of the stirring rod position detection model.

[0064] The data processing method for stirring rod position detection provided by the present invention processes the analog electrical signals generated by the stirring rod of the target stirring device cutting the magnetic field at different positions at the target rotational speed, and uses data calibration to establish a stirring rod position detection model of the target stirring device at the target rotational speed for use in subsequent stirring rod position detection, thereby realizing position detection of the stirring rod of the stirring device without affecting the production process and without destroying the structure of the stirring system; and the present invention is suitable for stirring devices with any number of stirring rods, any structure, and any rotational speed, and has high precision in stirring rod position detection for different types of stirring devices.

[0065] Based on the content of the above embodiment, as an optional embodiment, the stirring rod position detection data processing method provided by the present invention performs spectrum analysis on the digital signal corresponding to the stirring rod at any position to obtain the signal characteristic value, including but not limited to the following steps:

[0066] (1) Perform Fourier transform on the digital signal to obtain the spectrum of the digital signal.

[0067] The spectrum obtained by Fourier transform shows the energy distribution of the signal, that is, the energy proportion of different frequency components.

[0068] (2) Determine the frequency range based on the target speed of the stirring rod.

[0069] Generally, the fundamental frequency (base frequency) is first calculated based on the rotation speed of the stirring rod.

[0070] If the stirring rod rotates at NRPM (revolutions per minute), the fundamental frequency f_0 can be calculated using the following formula:

[0071] f_0=N / 60.

[0072] For example, if the stirring rod rotates at 100 RPM, the fundamental frequency f_0 is:

[0073] 100 / 60≈1.67Hz.

[0074] The frequency range in the present invention can be determined according to the basic frequency f_0, for example, within one times the basic frequency and two times the basic frequency, or within the range near the basic frequency. The specific frequency range can be determined according to actual conditions.

[0075] (3) Calculate the spectrum energy of the digital signal within the frequency range and use the spectrum energy as the signal characteristic value.

[0076] The spectrum energy can be obtained by integrating or summing the energy at each point in the frequency range.

[0077] In the process of data processing, the present invention uses the spectrum energy within a specific frequency range as the signal characteristic value of the stirring rod instead of a single spectrum peak value, which can improve the detection accuracy of the stirring rod position.

[0078] Based on the contents of the above embodiments, as an optional embodiment, the stirring rod position detection data processing method provided by the present invention further includes: determining the duration of the acquired analog electrical signal according to the target rotation speed of the stirring rod of the target stirring device.

[0079] Because the rotation speed of the stirring rod directly affects the periodicity and frequency components of the signal, the correct selection of the acquisition time is crucial to accurately obtain the signal characteristic value.

[0080] The acquisition time should be long enough to ensure that one or more stirring rod rotation cycles are fully included. This ensures that the Fourier transform can accurately reflect the main frequency components of the signal. The acquisition time should not be too long, otherwise it will affect the real-time response capability of the system. It is necessary to shorten the acquisition time as needed while ensuring signal quality.

[0081] Figure 2 2 is a schematic diagram of the structure of the stirring rod position detection system of the stirring device provided by the present invention, wherein the system comprises: a magnetic field generating module 210, a magnetic field detecting module 220, and a detection data processing module 230;

[0082] The magnetic field generating module 210 is used to generate a magnetic field; wherein the magnetic field penetrates the current stirring device and acts on the stirring rod to be tested of the current stirring device.

[0083] The current stirring device may be a stirring tank. The function of the magnetic field generation module is to generate a stable magnetic field, which can be achieved by an electromagnet or a permanent magnet. The electromagnet can control the magnetic field strength by adjusting the current, while the permanent magnet provides a constant magnetic field. The magnetic field generation module is usually arranged outside the stirring tank to ensure that the magnetic field can penetrate the wall of the stirring tank and interact with the stirring rod inside.

[0084] The magnetic field detection module 220 is used to sense the dynamic magnetic field generated when the stirring rod to be tested cuts the magnetic field at a set rotation speed, and generate an analog electrical signal.

[0085] The stirring rod to be tested cuts the magnetic flux lines and generates eddy currents inside it, which then generate a dynamic magnetic field. The magnetic field detection module can use a Hall effect sensor or a magnetic induction coil. These sensors can capture the changes in the dynamic magnetic field and convert them into voltage or current fluctuations. The magnetic field detection module is also arranged outside the stirring tank, opposite to or adjacent to the magnetic field generation module.

[0086] The detection data processing module 230 is used to process the analog electrical signal to generate a digital signal, perform spectrum analysis on the digital signal, obtain signal characteristic values, and input the signal characteristic values ​​into the corresponding stirring rod position detection model to output the position of the stirring rod to be detected. The stirring rod position detection model is constructed using any of the stirring rod position detection data processing methods described above.

[0087] The specific method of "processing the analog electrical signal to generate a digital signal, performing spectrum analysis on the digital signal, and obtaining the signal characteristic value" mentioned here can be found in the description of the above embodiment, and will not be repeated here.

[0088] Based on the contents of the above embodiments, as an optional embodiment, the present invention provides a stirring rod position detection system for a stirring device, wherein the magnetic field generating module and the magnetic field detecting module are located on the same side of the current stirring device; the magnetic field generating module includes a permanent magnet, and the magnetic field detecting module includes two induction coils; the two induction coils are coaxially arranged at both ends of the permanent magnet, and the axis is perpendicular to the cylinder surface of the current stirring device.

[0089] Among them, the induction coil that is farther away from the current stirring device is used to sense the dynamic magnetic field generated when the stirring rod cuts the magnetic field, and generate a first electromotive force signal; the induction coil that is closer to the current stirring device is used to sense the dynamic magnetic field generated when the stirring rod cuts the magnetic field, and generate a second electromotive force signal; the magnetic field detection module is also used to perform differential processing on the second electromotive force signal and the first electromotive force, and generate an analog electrical signal to be processed.

[0090] Figure 3 The schematic diagram of the principle of position detection using electromagnetic induction provided by the present invention is shown below. Figure 3 The above embodiment is further described.

[0091] like Figure 3 As shown, two induction coils (which can be cylinders) are coaxially arranged at both ends of a permanent magnet (which can be a cylinder), and the axis is perpendicular to the surface of the cylinder. The magnetic field generated by the permanent magnet (blue arrow curve) can directly penetrate the cylinder and the slurry. When the stirring rod is stirred, the rod cuts the magnetic flux lines and generates eddy currents (red dotted lines) inside it, which then generate a dynamic magnetic field (red arrow curve). Dynamic magnetic field B e Induction electromotive force is generated inside the two induction coils. Specifically, the induction coil far from the stirring cylinder generates a first electromotive force signal V1, and the induction coil close to the stirring cylinder generates a second electromotive force signal V2.

[0092]

[0093] φ ei is the magnetic flux generated by the dynamic magnetic field at the induction coil, and N is the number of turns of the coil.

[0094] Due to the characteristic that the magnetic field decays exponentially with distance, the induced electromotive force (i.e., the first electromotive force signal) of the induction coil farther from the stirring cylinder is smaller, and the induced electromotive force (i.e., the second electromotive force signal) of the induction coil closer to the stirring cylinder is larger, and the impact of environmental noise on the two induction coils can be considered to be the same. Therefore, the present invention can eliminate the interference of environmental noise by differentially measuring the electromotive force values ​​of the two induction coils, thereby realizing the detection of the position of the stirring rod. The magnetic field detection module is also used to perform differential processing on the second electromotive force signal and the first electromotive force to generate an analog electrical signal to be processed, which can effectively suppress common mode noise and enhance useful signals.

[0095] Figure 4 is a schematic diagram of the structure of the electronic device provided by the present invention, such as Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other via the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the stirring rod position detection data processing method.

[0096] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0097] On the other hand, the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium, and the computer program includes program instructions. When the program instructions are executed by a computer, the computer can execute the stirring rod position detection data processing method provided in the above-mentioned embodiments.

[0098] On the other hand, the present invention further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the computer program is executed by a processor to execute the stirring rod position detection data processing method provided in the above embodiments.

[0099] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0100] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stirring rod position detection data processing method, characterized in that: The method is used to process the analog electrical signals generated by the stirring rod of the target stirring device cutting the magnetic field at different positions at the target rotation speed, comprising: Processing analog electrical signals generated by the stirring rod at different positions to generate corresponding digital signals; Performing spectrum analysis on the digital signals corresponding to the stirring rod at different positions to obtain corresponding signal characteristic values; According to the signal characteristic values ​​corresponding to the stirring rod at different positions, a stirring rod position detection model for the target stirring device at the target speed is established; wherein the input of the stirring rod position detection model is the signal characteristic value corresponding to the simulated electrical signal at the target speed, and the output is the position of the stirring rod.

2. The stirring rod position detection data processing method according to claim 1, characterized in that: The analog electrical signal generated by the stirring rod at any position is processed to generate a digital signal, including: Performing a first preprocessing on the analog electrical signal; the first preprocessing includes one or more of the following preprocessing operations: filtering processing, signal amplification processing; Performing analog-to-digital conversion on the preprocessed analog signal to generate an initial digital signal; The initial digital signal is subjected to a second preprocessing; the content of the second preprocessing includes one or more of the following preprocessing operations: digital smoothing processing, digital filtering processing and environmental noise compensation processing.

3. The stirring rod position detection data processing method according to claim 1, characterized in that: Perform spectrum analysis on the digital signal corresponding to the stirring rod at any position to obtain signal characteristic values, including: Perform Fourier transform on the digital signal to obtain the spectrum of the digital signal; Determine the frequency range based on the target speed of the stirring rod; Calculate the spectrum energy of the spectrum of the digital signal within the frequency range, and use the spectrum energy as the signal characteristic value.

4. The stirring rod position detection data processing method according to claim 1, characterized in that: According to the signal characteristic values ​​corresponding to the stirring rod at different positions, a stirring rod position detection model of the target stirring equipment at the target speed is established, including: Performing numerical fitting on the position of the stirring rod and the corresponding signal characteristic value to obtain a fitting function; The fitting function is used as the stirring rod position detection model, and the target stirring device and target speed applicable to the stirring rod position detection model are marked.

5. The stirring rod position detection data processing method according to claim 1, characterized in that: According to the signal characteristic values ​​corresponding to the stirring rod at different positions, a stirring rod position detection model of the target stirring equipment at the target speed is established, including: The position of the stirring rod and the corresponding signal characteristic value are used as training data; Using the training data, training a machine learning model; wherein the input of the machine learning model is a signal feature value, and the output is a position; The trained machine learning model is used as the stirring rod position detection model, and the target stirring device and target rotation speed applicable to the stirring rod position detection model are marked.

6. The stirring rod position detection data processing method according to claim 1, characterized in that: The position of the stirring rod is characterized by the distance between the stirring rod and the side wall of the target stirring device.

7. The stirring rod position detection data processing method according to claim 1, characterized in that: Also includes: The duration of the acquired analog electrical signal is determined according to the target rotation speed of the stirring rod of the target stirring device.

8. A stirring rod position detection system for a stirring device, characterized in that: include: A magnetic field generating module, a magnetic field detecting module, and a detection data processing module; The magnetic field generating module is used to generate a magnetic field; wherein the magnetic field penetrates the current stirring device and acts on the stirring rod to be tested of the current stirring device; The magnetic field detection module is used to sense the dynamic magnetic field generated when the stirring rod to be tested cuts the magnetic field at a set rotation speed, and generate an analog electrical signal; The detection data processing module is used to process the analog electrical signal to generate a digital signal, perform spectrum analysis on the digital signal, obtain signal characteristic values, input the signal characteristic values ​​into the corresponding stirring rod position detection model, and output the position of the stirring rod to be detected; The stirring rod position detection model is constructed by using the stirring rod position detection data processing method as described in any one of claims 1 to 7.

9. The stirring rod position detection system of the stirring device according to claim 8, characterized in that: The magnetic field generating module and the magnetic field detecting module are located on the same side of the current stirring device; The magnetic field generating module includes a permanent magnet, and the magnetic field detecting module includes two induction coils; the two induction coils are coaxially arranged at both ends of the permanent magnet, and the axes are perpendicular to the cylinder surface of the current stirring device; Among them, the induction coil farther from the current stirring device is used to sense the dynamic magnetic field generated when the stirring rod cuts the magnetic field, and generate a first electromotive force signal; the induction coil closer to the current stirring device is used to sense the dynamic magnetic field generated when the stirring rod cuts the magnetic field, and generate a second electromotive force signal; The magnetic field detection module is also used to perform differential processing on the second electromotive force signal and the first electromotive force to generate an analog electrical signal to be processed.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the stirring rod position detection data processing method according to any one of claims 1 to 7 are implemented.

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