Automatic deviation correction method and device for belt dryer crawler used in oligosaccharide production

Abstract

The present invention relates to the field of industrial vision technology, and more specifically to a method and device for automatically correcting the track of a belt dryer used in oligosaccharide production. The method comprises: obtaining a track surface image and the impact amplitude of the track roller at each moment during the oligosaccharide production process; determining the transmission accumulation condition coefficient at each moment based on the difference in the distribution of edge pixels in the track surface images at adjacent moments; determining the changing correlation of the hysteresis reaction at each moment in combination with the impact amplitude of the track roller at the same moment, thereby adjusting the transmission accumulation condition coefficient; and obtaining the adjusted accumulation warning parameter at each moment to determine whether track correction is necessary. The present invention ensures the efficiency and continuity of the transmission process through refined correction.

Description

Technical Field

[0001] The present invention relates to the field of industrial vision technology, and in particular to a method and a device for automatically correcting the deviation of a belt dryer crawler used in oligosaccharide production. Background Art

[0002] Track correction uses a closed-loop feedback control system to detect the track balance in real time, locates wear points using mechanical sensors or visual recognition technology, and performs fine-tuning in conjunction with automatic adjustment devices (such as cylinders or hydraulic systems). The integration of a SCADA (Supervisory Control And Data Acquisition) system and an industrial control unit enables precise monitoring and dynamic correction of track deviations. In addition, this method also takes into account the adaptability of the equipment's operating environment, uses wear-resistant and corrosion-resistant materials, and combines predictive maintenance technology to ensure the stability of the production process. Through automatic correction, human operating errors are significantly reduced, improving the operating efficiency and product consistency of the belt dryer while complying with food safety standards, providing an efficient and reliable solution for oligosaccharide production.

[0003] During the transmission of oligosaccharide powder, due to the dynamic behavior of powder particles such as accumulation, sliding or collapse, the accumulation may cause significant instantaneous impact on the track. This impact usually manifests as an unbalanced force applied locally to the track, causing a short-term change in the track posture. Specifically, when the accumulation suddenly slides or redistributes, it may cause an increase in force on one side of the track, resulting in lateral displacement or local tilting, or even deviation from the original track. Although this impact is often instantaneous, its impact may be transmitted to a larger area through track tension or other mechanical structures, causing fluctuations in the overall track posture. Track posture sensors (such as photoelectric sensors, position sensors or angle sensors) may record drastic short-term data fluctuations under impact conditions, which may be misjudged by the analysis algorithm as a continuous deviation of the posture, thereby affecting the system's accurate judgment of the operating status.

[0004] Existing Problem: The dynamic characteristics of oligosaccharide powder deposits make this impact a certain degree of uncertainty. The slip and movement of the deposits are often unpredictable and have a certain periodicity. The deposits may cause local collapse or redistribution during transportation. This behavior may occur periodically in a low-frequency form or at a random high-frequency level superimposed on the impact background of the track. The impact caused by the movement of the deposits not only affects the track posture in the short term, but also has the potential to cause cumulative interference with the long-term operational stability of the system, affecting the accuracy of the automatic deviation correction of the track of the oligosaccharide production belt dryer. Summary of the Invention

[0005] The present invention provides a method and a device for automatically correcting the deviation of a belt dryer crawler used in oligosaccharide production, so as to solve the existing problems.

[0006] The method and device for automatically correcting the deviation of the belt dryer crawler used in oligosaccharide production of the present invention adopt the following technical solutions:

[0007] One embodiment of the present invention provides a method for automatically correcting the deviation of a belt dryer track for oligosaccharide production, the method comprising the following steps:

[0008] Obtain the track surface image and the impact amplitude of the track roller at every moment during the oligosaccharide production process;

[0009] According to the change difference between the distribution of edge pixel points in the track surface images at adjacent moments, the transmission accumulation condition coefficient at each moment is determined;

[0010] According to the correlation between the impact amplitude of the track roller and the transmission accumulation condition coefficient at the same moment, the changing correlation condition of the hysteresis reaction at each moment is determined;

[0011] According to the changing correlation of the hysteresis reaction at the same moment of the transmission accumulation condition coefficient, the transmission accumulation condition coefficient is adjusted to obtain the adjusted accumulation warning parameter at each moment; according to the size of the adjusted accumulation warning parameter, it is determined whether the track correction is needed.

[0012] Furthermore, the specific steps of determining the transmission accumulation condition coefficient at each moment include the following:

[0013] A window side length n is preset, and in the track surface image at each moment, a window of size n×n is constructed with any pixel as the center, and the edge density of any edge pixel is determined based on the number of edge pixels within the window of the edge pixel;

[0014] Calculating the sum of the edge densities of all edge pixels in each column of the track surface image as the edge density of each column, and counting the edge densities of all columns one by one from left to right to form an edge density vector corresponding to each moment;

[0015] The transmission accumulation condition coefficient at each moment is determined based on the difference between the edge density vectors corresponding to adjacent moments.

[0016] Furthermore, the step of determining the edge density of any edge pixel point according to the number of edge pixels within the window of any edge pixel point includes the following specific steps:

[0017] The ratio of the number of edge pixels in the window of any edge pixel point to the window area of ​​the any edge pixel point is used as the edge density of the any edge pixel point.

[0018] Furthermore, the transmission accumulation condition coefficient at each moment is determined based on the difference between the edge density vectors corresponding to adjacent moments, and the specific steps include the following:

[0019] Obtain a difference vector of the edge density vector corresponding to the i-th moment minus the edge density vector corresponding to the i-1-th moment, and use the normalized value of the ratio of the modulus of the difference vector to the modulus of the edge density vector corresponding to the i-th moment as the transmission accumulation condition coefficient at the i-th moment.

[0020] Furthermore, the determination of the change correlation status of the hysteresis reaction at each moment includes the following specific steps:

[0021] The normalized value of the impact amplitude of the track roller at each moment is taken as the impact significance at each moment;

[0022] According to the difference between the impact significance and the transmission accumulation condition coefficient at the same moment, the changing correlation status of the hysteresis reaction at each moment is determined.

[0023] Furthermore, the determination of the change correlation status of the hysteresis reaction at each moment based on the difference between the impact significance and the transmission accumulation condition coefficient at the same moment includes the following specific steps:

[0024] The ratio of the impact significance to the transmission accumulation condition coefficient at the i-th moment is calculated, and the inversely proportional normalized value of the absolute value of the difference between 1 and the ratio is used as the change correlation condition of the hysteresis reaction at the i-th moment.

[0025] Furthermore, the step of obtaining the adjusted accumulation warning parameter at each moment includes the following specific steps:

[0026] The moment with the same transmission accumulation condition coefficient as the i-th moment is recorded as the reference moment;

[0027] The adjusted accumulation warning parameter at the i-th moment is determined according to the change correlation status of the hysteresis reaction at the reference moment and the transmission accumulation condition coefficient at the i-th moment.

[0028] Furthermore, the step of determining the adjusted accumulation warning parameter at the i-th moment based on the change correlation status of the hysteresis reaction at the reference moment and the transmission accumulation status coefficient at the i-th moment includes the following specific steps:

[0029] The mean of the change correlation conditions of the hysteresis reactions at all reference moments is obtained, and the normalized value of the product of the mean and the transmission accumulation condition coefficient at the i-th moment is used as the adjusted accumulation warning parameter at the i-th moment.

[0030] Furthermore, the specific steps of determining whether track deviation correction is required based on the adjusted size of the accumulation warning parameter are as follows:

[0031] If the adjusted accumulation warning parameter at the current moment is greater than the preset warning threshold, track deviation correction will be performed starting from the current moment.

[0032] The present invention also proposes an automatic deviation-correcting device for a belt dryer crawler used in oligosaccharide production, which adopts the automatic deviation-correcting method for a belt dryer crawler used in oligosaccharide production. The device includes the following modules:

[0033] Data acquisition module: used to obtain the track surface image and the impact amplitude of the track roller at every moment during the oligosaccharide production process;

[0034] Transmission accumulation analysis module: used to determine the transmission accumulation coefficient at each moment based on the change difference between the distribution of edge pixels in the track surface images at adjacent moments;

[0035] Impact hysteresis analysis module: used to determine the changing correlation of the hysteresis reaction at each moment based on the correlation between the impact amplitude of the track roller and the transmission accumulation condition coefficient at the same moment;

[0036] Track correction module: It is used to adjust the transmission accumulation condition coefficient according to the changing correlation of the hysteresis reaction at the same moment of the transmission accumulation condition coefficient, and obtain the adjusted accumulation warning parameters at each moment; according to the size of the adjusted accumulation warning parameters, it is determined whether track correction is needed.

[0037] The beneficial effects of the technical solution of the present invention are:

[0038] In an embodiment of the present invention, the transmission accumulation condition coefficient at each moment is determined based on the difference in the distribution of edge pixel points in the track surface image at adjacent moments during the oligosaccharide production process. Combined with the impact amplitude of the track roller at the same moment, the change correlation condition of the hysteresis reaction at each moment is determined. This analyzes the transient impact caused by phenomena such as accumulation movement and slippage during the transmission of oligosaccharide powder, which may lead to problems such as track posture deviation, tension imbalance, and abnormal stress on mechanical components, thereby ensuring the accuracy of subsequent track correction. The transmission accumulation condition coefficient is adjusted based on the change correlation condition of the hysteresis reaction, and the adjusted accumulation warning parameter at each moment is obtained to determine whether track correction is needed. Thus, accurate accumulation warning parameters are obtained to improve the accuracy of track correction. Thus, the present invention can perceive posture changes in real time and quickly adjust the track operation status through refined correction, effectively improving the stability of equipment operation, reducing roller wear, track fatigue and component loss caused by impact, and ensuring the efficiency and continuity of the transmission process. At the same time, refined deviation correction can reduce powder overflow, equipment downtime and economic losses caused by abnormal posture, improve production safety and automation level, and extend equipment service life, ultimately achieving efficient, stable and sustainable production goals. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is a flow chart of the steps of the automatic deviation correction method for the belt dryer crawler used in oligosaccharide production of the present invention;

[0041] Figure 2 This is a module structure diagram of the automatic deviation-correcting device for the belt dryer used for oligosaccharide production according to the present invention;

[0042] Figure 3 Schematic diagram of the belt dryer crawler working for oligosaccharide production;

[0043] Figure 4 This is a schematic diagram of the impact signal of the track roller;

[0044] Figure 5 Schematic diagram of the stacking slip of oligosaccharides. DETAILED DESCRIPTION

[0045] To further illustrate the technical means and effectiveness of the present invention in achieving its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, describes in detail the specific implementation, structure, features, and effectiveness of the automatic belt deviation correction method and device for a belt dryer used in oligosaccharide production. In the following description, references to "one embodiment" or "another embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0046] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0047] The specific scheme of the automatic deviation correction method and device for the belt dryer crawler used in oligosaccharide production provided by the present invention is described in detail below with reference to the accompanying drawings.

[0048] See also Figure 1 , which shows a flowchart of the steps of a method for automatically correcting the deviation of a belt dryer crawler for oligosaccharide production provided by one embodiment of the present invention, the method comprising the following steps:

[0049] Step S001: Acquire the track surface image and the impact amplitude of the track roller at each moment during the oligosaccharide production process.

[0050] During the oligosaccharide production process, images of the track surface and the impact amplitude of the track rollers are collected at each moment.

[0051] It should be noted that the acquisition frequency is 10 times per second, which is used as an example. The process for collecting track surface images and track roller impact amplitudes is as follows: Arrange an industrial light source and install it in an appropriate position to avoid reflections. Adjust the light intensity and angle to ensure clear, shadow-free images. Mount the industrial camera above the track transmission line, ensuring that the field of view covers the track surface and the oligosaccharide powder transmission area. During installation, ensure the accuracy of visual information acquisition. Place the camera on a stable surface to avoid vibration or tilt, ensuring that the track is perpendicular to the camera. Adjust the camera's position and focal length, and set parameters such as resolution and frame rate to ensure clear transmission images. The resulting track surface image should be oriented in the direction of oligosaccharide transmission. Install accelerometers, impact sensors, and displacement sensors on the track roller bearings or key structural components and secure them securely. Connect all sensors to a data acquisition card via signal cables, and connect the data acquisition card to an industrial computer. Calibrate the accelerometers and impact sensors, set the measurement range and frequency response range, and synchronize all devices to ensure consistent timestamps for image and sensor data acquisition. Then start the crawler conveyor equipment and start the oligosaccharide powder transmission process. The acquisition program is triggered by the industrial computer or data acquisition system. The industrial camera collects the image of the crawler surface in real time. At the same time, the impact sensor collects the impact signal of the crawler roller. Figure 3 As shown in the figure. The impact signal diagram of the track roller is as follows: Figure 4 As shown, Figure 4 The horizontal axis is the impact signal amplitude, and the vertical axis is time (in seconds).

[0052] Step S002: determining the transmission accumulation condition coefficient at each moment based on the change difference between the distribution conditions of edge pixels in the crawler surface images at adjacent moments.

[0053] It should be noted that: since oligosaccharides pass through the transmission drum and reach the crawler belt after drying, they will achieve different degrees of accumulation on the conveyor belt. The accumulation condition depends on the conveying efficiency of the conveyor belt. The more oligosaccharide granular powder products are conveyed by the transmission drum per unit time, the greater the short-term impact force on the desiccant crawler due to dynamic behaviors such as accumulation, slippage or collapse, resulting in a significant change in the crawler running posture.

[0054] It is further important to note that in the oligosaccharide conveyor belt accumulation and slippage phenomenon, visual and impact information reveal the evolution of the material state from different dimensions, exhibiting distinct response characteristics and time deviations at specific stages. In the initial stages of oligosaccharide accumulation, particle aggregation leads to a gradual increase in edge density in the image, resulting in denser local textures. As the accumulation gradually expands, the visual information exhibits a more pronounced trend, with the accumulation area continuously increasing and the particle distribution becoming chaotic and irregular. Compared to visual information, impact information reflects the impact and mechanical changes in the conveyor belt system, but its performance typically lags behind the visual signal. In the early stages of accumulation, changes in the impact signal are primarily influenced by the oligosaccharide falling from the drive drum. As the accumulation matures, the uneven distribution of the material begins to interfere with conveyor operation. When the accumulation progresses to the slippage stage, the impact signal changes become particularly significant, typically manifested by a short-term surge in impact amplitude and a dramatic change in high-frequency fluctuations. This dramatic impact signal directly reflects the slippage caused by insufficient friction between the accumulated material and the conveyor belt. Therefore, the visual and impact information exhibit stage-by-stage differences and a complementary relationship throughout the accumulation and slippage process.

[0055] Preferably, in one embodiment of the present invention, the method for obtaining the transmission accumulation condition coefficient at each moment includes:

[0056] The default window side length n is 10, and this is used as an example for description.

[0057] In the track surface image at each moment, a window of size n×n is constructed with any pixel as the center.

[0058] The Canny edge operator is used to obtain the edge pixels in the track surface image at each moment, and the ratio of the number of edge pixels in the window of any edge pixel point to the window area of ​​any edge pixel point is used as the edge density of any edge pixel point.

[0059] It should be noted that the canny edge operator is a well-known technology and the specific method will not be introduced here. Since the accumulation slippage of oligosaccharides usually occurs away from the center line of the conveyor belt, the manifestation of the accumulation condition is more of the accumulation deviation in the direction perpendicular to the conveying direction of the conveyor belt. That is, the farther away from the center line of the conveyor belt, the greater the possibility of accumulation. The closer to the center line, the change in its edge density is mainly affected by the transmission. The schematic diagram of the accumulation slippage of oligosaccharides is shown as follows: Figure 5 shown. Figure 5 The conveyor belt located between the two conveyor belt baffles moves along the conveying direction, and the accumulation of oligosaccharides gradually slides from the center line of the conveyor belt to both sides, that is, the accumulation direction is perpendicular to the conveying direction. In this embodiment, the conveying direction is the column direction of the track surface image.

[0060] In the track surface image at each moment, the sum of the edge densities of all edge pixels in each column is calculated as the edge density of each column. The edge densities of all columns are counted column by column from left to right to form the edge density vector corresponding to each moment.

[0061] It should be noted that the edge density vector reflects the projection of the edge pixel points in the track surface image along the conveying direction toward the accumulation direction.

[0062] Obtain the difference vector of the edge density vector corresponding to the i-th moment minus the edge density vector corresponding to the i-1-th moment, then obtain the ratio of the modulus of the difference vector to the modulus of the edge density vector corresponding to the i-th moment, and use the normalized value of the ratio as the transmission accumulation condition coefficient at the i-th moment.

[0063] It should be noted that the calculation of the difference vector between two vectors and the calculation of the vector modulus are both well-known techniques, and the specific methods are not described here. In this embodiment, the norm() linear normalization function is used to normalize the above ratio to between 0 and 1, and this is used as an example for description. Because the pileup condition is determined based on a relatively short period of time, it will be significantly affected by the edge density sequence values ​​of the image itself. The larger the ratio, the greater the change in the transmission pileup condition. In this embodiment, the transmission pileup condition coefficient at the first moment and the adjusted pileup warning parameters at the first moment are not analyzed.

[0064] Step S003: Determine the changing correlation of the hysteresis reaction at each moment based on the correlation between the impact amplitude of the track roller and the transmission accumulation condition coefficient at the same moment.

[0065] What needs to be explained is that: due to the accumulation and slippage phenomenon of the oligosaccharide conveyor belt, different stages of the accumulation process show different changes in visual information sensitivity, which is specifically manifested in that the transmission accumulation condition coefficient of the entire accumulation process has different rates of change, and its change condition is more affected by the normal transmission process itself, resulting in insufficient accuracy in the deviation of the belt dryer track caused by the accumulation and slippage phenomenon from the perspective of visual information. The impact information on the track can improve the accuracy of visual information, so it is necessary to comprehensively analyze the abnormal correlation conditions of the accumulation process. Since the reflection of the impact condition usually lags behind the visual information, but its actual lag condition will change with different stages, the lag condition in the early stage of accumulation is larger, and it will continue to decrease in the later stage of accumulation. This is because the accumulation part has a large impact with the track, which is manifested in that the texture of the image area and the impact data have changed significantly, and the rate of change is significant compared to the initial stage, and the lag condition is smaller.

[0066] For the impact amplitude of the track roller at all moments, the minimum and maximum norm method is used to obtain the normalized value of the impact amplitude of the track roller at each moment, which is used as the impact significance at each moment.

[0067] It should be noted that the minimum-maximum normalization method is a well-known technique, and the specific method will not be described here. It is used to normalize data values ​​between 0 and 1. Because the value of the transmission accumulation condition coefficient at each moment has a lag in the display of the actual oligosaccharide accumulation condition on the belt dryer's crawler, the actual error impact depends on the actual display of the correlation coefficient between the transmission accumulation condition coefficient and the impact significance.

[0068] Calculate the ratio of the impact significance at the i-th moment to the transmission accumulation condition coefficient at the i-th moment, and take the inverse proportional normalized value of the difference between 1 and the absolute value A of the ratio as the change correlation condition of the hysteresis reaction at the i-th moment.

[0069] It should be noted that this embodiment uses exp(-A) to represent the inverse proportional relationship and normalization of A. Implementers can customize the inverse proportional and normalization functions based on their actual needs. exp() is an exponential function with a natural constant as its base. The closer the impact significance and the transmission accumulation coefficient at the same moment are, the smaller A becomes, and thus the greater the correlation between the changes in the hysteresis response and the stronger the correlation between the impact significance and the transmission accumulation coefficient.

[0070] Step S004: Adjust the transmission accumulation condition coefficient according to the change correlation of the hysteresis reaction at the same moment of the transmission accumulation condition coefficient, and obtain the adjusted accumulation warning parameter at each moment; determine whether track correction is needed based on the size of the adjusted accumulation warning parameter.

[0071] What needs to be explained is that: the changing correlation conditions of the lag reaction at all times are obtained, and the transmission accumulation condition coefficient is adjusted. The adjustment process should be based on the numerical fluctuation of the transmission accumulation condition coefficient, that is, the accumulation reaction condition is adjusted within the value range distribution range of the transmission accumulation condition coefficient at all times.

[0072] Among the transmission accumulation condition coefficients at all moments, the moment with the same transmission accumulation condition coefficient as the i-th moment is counted and recorded as the reference moment. The mean of the change correlation condition of the lag reaction of all reference moments is obtained, and the normalized value of the product of the mean and the transmission accumulation condition coefficient at the i-th moment is used as the adjusted accumulation warning parameter at the i-th moment.

[0073] It should be noted that: in this embodiment, the norm() linear normalization function is used to normalize the above product to between 0 and 1, and this is used as an example for description.

[0074] The preset warning threshold is 0.83, which is used as an example for description.

[0075] If the adjusted accumulation warning parameter at the current moment is greater than the preset warning threshold, the track correction will be performed from the current moment, that is, the control parameters of the track drive roller will be adjusted, and the track tightness and friction force will be changed by moving the position of the drive roller. The adjustment effect can be achieved by ensuring that the adjusted accumulation warning parameter obtained subsequently is less than or equal to the preset warning threshold, so as to effectively reduce the occurrence of oligosaccharide accumulation.

[0076] Second, see Figure 2 , which shows an automatic deviation-correcting device for a belt dryer crawler used for oligosaccharide production according to an embodiment of the present invention, the device includes the following modules:

[0077] Data acquisition module: used to obtain the track surface image and the impact amplitude of the track roller at every moment during the oligosaccharide production process;

[0078] Transmission accumulation analysis module: used to determine the transmission accumulation coefficient at each moment based on the change difference between the distribution of edge pixels in the track surface images at adjacent moments;

[0079] Impact hysteresis analysis module: used to determine the changing correlation of the hysteresis reaction at each moment based on the correlation between the impact amplitude of the track roller and the transmission accumulation condition coefficient at the same moment;

[0080] Track correction module: It is used to adjust the transmission accumulation condition coefficient according to the changing correlation of the hysteresis reaction at the same moment of the transmission accumulation condition coefficient, and obtain the adjusted accumulation warning parameters at each moment; according to the size of the adjusted accumulation warning parameters, it is determined whether track correction is needed.

[0081] So far, the present invention is completed.

[0082] In summary, in an embodiment of the present invention, the track surface image and the impact amplitude of the track roller at each moment in the oligosaccharide production process are obtained. Based on the difference in the distribution of edge pixel points in the track surface images at adjacent moments, the transmission accumulation condition coefficient at each moment is determined. Combined with the impact amplitude of the track roller at the same moment, the change correlation of the hysteresis reaction at each moment is determined to adjust the transmission accumulation condition coefficient. The adjusted accumulation warning parameter at each moment is obtained to determine whether track deviation correction is needed. The present invention ensures the efficiency and continuity of the transmission process through refined deviation correction.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A belt dryer crawler automatic deviation correction method for oligosaccharide production, characterized in that: The method comprises the following steps: Obtain the track surface image and the impact amplitude of the track roller at every moment during the oligosaccharide production process; According to the change difference between the distribution of edge pixel points in the track surface images at adjacent moments, the transmission accumulation condition coefficient at each moment is determined; According to the correlation between the impact amplitude of the track roller and the transmission accumulation condition coefficient at the same moment, the changing correlation condition of the hysteresis reaction at each moment is determined; According to the correlation of the change of the hysteresis reaction at the same moment of the transmission accumulation condition coefficient, the transmission accumulation condition coefficient is adjusted to obtain the adjusted accumulation warning parameter at each moment; according to the size of the adjusted accumulation warning parameter, it is determined whether the crawler deviation correction is needed; The specific steps of determining the transmission accumulation condition coefficient at each moment are as follows: Preset window side length , in the track surface image at each moment, a pixel with a size of , determining the edge density of any edge pixel point according to the number of edge pixels in the window of any edge pixel point; Calculating the sum of the edge densities of all edge pixels in each column of the track surface image as the edge density of each column, and counting the edge densities of all columns one by one from left to right to form an edge density vector corresponding to each moment; Get the The edge density vector corresponding to the moment minus the The difference vector of the edge density vector corresponding to the moment, the modulus of the difference vector and the The normalized value of the ratio of the modulus of the edge density vector corresponding to the moment is used as the first Transmission accumulation coefficient at the time; The specific steps of determining the change correlation status of the hysteresis reaction at each moment include the following: The normalized value of the impact amplitude of the track roller at each moment is taken as the impact significance at each moment; According to the difference between the impact significance and the transmission accumulation condition coefficient at the same moment, the changing correlation status of the hysteresis reaction at each moment is determined.

2. The method for automatically correcting the deviation of a belt dryer crawler for oligosaccharide production according to claim 1, characterized in that: The step of determining the edge density of any edge pixel point according to the number of edge pixels within the window of any edge pixel point comprises the following specific steps: The ratio of the number of edge pixels in the window of any edge pixel point to the window area of ​​the any edge pixel point is used as the edge density of the any edge pixel point.

3. The method for automatically correcting the deviation of a belt dryer crawler for oligosaccharide production according to claim 1, characterized in that: The specific steps of determining the change correlation status of the hysteresis reaction at each moment based on the difference between the impact significance and the transmission accumulation condition coefficient at the same moment are as follows: Calculate the The ratio of the impact significance at the moment to the transmission accumulation condition coefficient is normalized by the inverse proportion of the absolute value of the difference between 1 and the ratio, and is used as the first The change correlation status of the time lag response.

4. The method for automatically correcting the deviation of a belt dryer crawler for oligosaccharide production according to claim 1, characterized in that: The specific steps of obtaining the adjusted accumulation warning parameters at each moment are as follows: Will be with The time when the transmission accumulation condition coefficient is the same as the time is recorded as the reference time; According to the change of the hysteresis reaction at the reference time and the The transmission accumulation coefficient at the moment is determined The adjusted accumulation warning parameters at the moment.

5. The method for automatically correcting the deviation of a belt dryer crawler for oligosaccharide production according to claim 4, characterized in that: The change correlation condition according to the hysteresis reaction of the reference time and the The transmission accumulation coefficient at the moment is determined The specific steps for adjusting the accumulation warning parameters at the moment are as follows: Get the mean of the change correlation status of the hysteresis reaction at all reference moments, and compare the mean with the The normalized value of the product of the transmission accumulation coefficient at the time is taken as the first The adjusted accumulation warning parameters at the moment.

6. The method for automatically correcting the deviation of a belt dryer crawler for oligosaccharide production according to claim 1, characterized in that: The specific steps of determining whether track deviation correction is required based on the adjusted accumulation warning parameter are as follows: If the adjusted accumulation warning parameter at the current moment is greater than the preset warning threshold, track deviation correction will be performed starting from the current moment.

7. An automatic deviation-correcting device for a belt dryer crawler used in oligosaccharide production, comprising the automatic deviation-correcting method for a belt dryer crawler used in oligosaccharide production according to any one of claims 1 to 6, characterized in that: The device includes the following modules: Data acquisition module: used to obtain the track surface image and the impact amplitude of the track roller at every moment during the oligosaccharide production process; Transmission accumulation analysis module: used to determine the transmission accumulation coefficient at each moment based on the change difference between the distribution of edge pixels in the track surface images at adjacent moments; Impact hysteresis analysis module: used to determine the changing correlation of the hysteresis reaction at each moment based on the correlation between the impact amplitude of the track roller and the transmission accumulation condition coefficient at the same moment; Track deviation correction module: used to adjust the transmission accumulation condition coefficient according to the change correlation of the hysteresis reaction at the same moment of the transmission accumulation condition coefficient, and obtain the adjusted accumulation warning parameters at each moment; Determine whether track deviation correction is necessary based on the size of the adjusted accumulation warning parameter.

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