Verticality monitoring system for processing and cutting polaroid based on laser scanning
By real-time monitoring of the polarizer cutting process based on laser scanning and automatically adjusting process parameters, the problems of low polarizer cutting accuracy and low automation and intelligence in the existing technology are solved, and efficient and accurate polarizer production is achieved.
Patent Information
- Application Number
- CN202510074335.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-04-29
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The prior art relies on manual detection and simple mechanical measurement in the polarizer cutting process, which consumes time and effort, has limited accuracy, and is difficult to meet the modern industry's demand for high-quality polarizers, and the level of automation and intelligence is low.
The verticality monitoring system based on laser scanning is adopted, including a laser scanning operation unit, a verticality calculation and analysis unit, a cutting intelligent adjustment unit and a cutting control display terminal. The polarizer cutting process is monitored in real time through laser scanning technology, calculate the verticality of the cutting surface, and automatically adjust the process parameters of the cutting equipment.
It improves the production efficiency and product quality of polarizers, reduces production costs and difficulty in cutting and handling management, significantly improves the level of automation and intelligence, and ensures that the cutting accuracy reaches the micron level.
Smart Images
Figure CN119901231A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of polarizer processing supervision, and in particular to a verticality monitoring system for polarizer processing and cutting based on laser scanning. Background Art
[0002] Polarizers are composed of multiple layers of thin films. They allow light in a specific direction to pass through, while blocking or changing light in other directions. When natural light passes through a polarizer, light whose vibration direction is perpendicular to the transmission axis of the polarizer will be absorbed, leaving only polarized light whose vibration direction is parallel to the transmission axis of the polarizer to pass through, thereby achieving control over the polarization direction of the light beam. Polaroids, as key components of modern science and technology, play an important role in liquid crystal display, virtual reality, augmented reality and other fields. Their cutting accuracy directly affects the quality and performance of products. In the traditional polaroid cutting process, the verticality monitoring mainly relies on manual inspection and simple mechanical measurement, which is time-consuming and labor-intensive with limited accuracy, which is not conducive to ensuring the cutting efficiency and cutting effect of polaroids, and it is difficult to meet the demand of modern industry for high-quality polaroids. The level of automation and intelligence is low; In view of the above technical defects, a solution is now proposed. Summary of the invention
[0003] The purpose of the present invention is to provide a verticality monitoring system for polarizer processing and cutting based on laser scanning, which solves the problem that the prior art mainly relies on manual detection and simple mechanical measurement to monitor the verticality of the polarizer cutting process, which is time-consuming and labor-intensive with limited accuracy, is not conducive to ensuring the cutting efficiency and cutting effect of the polarizer, and the cutting operation management is difficult and the level of automation and intelligence is low.
[0004] To achieve the above object, the present invention provides the following technical solutions: A verticality monitoring system for processing and cutting polarizers based on laser scanning, comprising a laser scanning operation unit, a verticality calculation and analysis unit, a cutting intelligent adjustment unit and a cutting control display terminal; an operator sends a start instruction to the laser scanning operation unit through the cutting control display terminal, and the laser scanning operation unit starts to operate when receiving the start instruction. The laser scanning operation unit integrates laser emission, scanning control and signal receiving functions, and sends the received electrical signal related to the polarizer to be cut to the verticality calculation and analysis unit; The verticality calculation and analysis unit receives the electrical signal output by the laser scanning operation unit, calculates the verticality of the cutting surface of the polarizer through corresponding algorithm processing, and sends the calculation result to the cutting intelligent adjustment unit and the cutting control display end; the cutting control display end displays the received calculation result, and after receiving the calculation result, the cutting intelligent adjustment unit automatically adjusts the process parameters of the cutting equipment based on the calculation result to control the cutting process of the polarizer by the cutting equipment.
[0005] Furthermore, the laser scanning operation unit includes a laser generating module, a scanning mirror module and a laser receiving module, wherein the laser emitting module emits a laser beam through a laser, and the laser beam is processed by a specific optical element to form a stable and parallel laser beam; The scanning mirror module projects the laser beam onto the surface of the polarizer to be cut along a predetermined trajectory through a high-speed rotating scanning mirror; the laser receiving module is used to receive the laser signal reflected from the surface of the polarizer, and the laser receiving module includes a highly sensitive photodetector to convert the received optical signal into an electrical signal.
[0006] Furthermore, the specific analysis process of the verticality calculation and analysis unit is as follows: Data reception: Receive the electrical signal output by the laser scanning operation unit through a high-speed interface; Signal preprocessing: After receiving the electrical signal, a series of preprocessing operations are performed to eliminate noise and improve signal quality. The preprocessing operations include filtering, amplification and digitization steps; Feature extraction: extract features from the preprocessed signal, and extract features directly related to the verticality of the cut surface of the polarizer from the signal, where the extracted features include the reflection intensity distribution, phase difference and frequency change of the laser beam; Verticality calculation: Based on feature extraction, a specific algorithm is used to calculate the verticality of the cut surface of the polarizer. The specific algorithm used is based on the principle of geometric optics, laser scattering theory or machine learning model, and the core of the algorithm is to match or compare the extracted feature quantity with the known verticality standard or model to obtain the verticality value of the cut surface.
[0007] Furthermore, the laser scanning operation unit is communicatively connected to the operation feasibility analysis unit. When the laser scanning operation unit is running, the operation feasibility analysis unit analyzes the operation feasibility of the laser scanning operation unit, and generates a feasibility qualified signal or a feasibility abnormal signal through the analysis. When the feasibility abnormal signal is generated, it is sent to the cutting control display end. When the cutting control display end receives the feasibility abnormal signal, it displays it and issues a corresponding warning.
[0008] Furthermore, the specific analysis process of running the feasibility analysis unit includes: Acquire environmental information of the environment in which the laser scanning operation unit is located, wherein the acquired environmental information includes light intensity, ambient temperature, ambient humidity and air pollution, calculate the difference between the ambient temperature and the median of a preset suitable ambient temperature range and take the absolute value to obtain the ambient temperature coefficient, calculate the difference between the light intensity and the median of a preset suitable light intensity range and take the absolute value to obtain the light intensity coefficient; The environmental feasibility coefficient is calculated by weighted summation of the light intensity coefficient, ambient temperature coefficient, ambient humidity and air turbidity, and the environmental feasibility coefficient is numerically compared with the preset environmental feasibility coefficient threshold. If the environmental feasibility coefficient exceeds the preset environmental feasibility coefficient threshold, a feasibility anomaly signal is generated.
[0009] Further, if the environmental feasibility coefficient does not exceed the preset environmental feasibility coefficient threshold, the intensity and wavelength of the laser beam emitted by the laser generating module in the laser scanning operation unit are collected and marked as the laser beam intensity and the laser beam wavelength, respectively, and the laser beam intensity and the laser beam wavelength are numerically compared with the preset laser beam intensity range and the preset laser beam wavelength range, respectively, and if the laser beam intensity or the laser beam wavelength is not within the corresponding preset range, a feasibility abnormality signal is generated; If the intensity and wavelength of the laser beam are both within the corresponding preset ranges, the scanning speed and scanning accuracy of the scanning mirror module in the laser scanning operation unit are collected, and the scanning speed and scanning accuracy are numerically compared with the preset scanning speed range and the preset scanning accuracy threshold, respectively. If the scanning speed is not within the preset scanning speed range or the scanning accuracy does not exceed the preset scanning accuracy threshold, a feasibility abnormality signal is generated; If the scanning speed is within the preset scanning speed range and the scanning accuracy exceeds the preset scanning accuracy threshold, the sensitivity and resolution of the laser receiving module in the laser scanning operation unit are collected, and the sensitivity and resolution are numerically compared with the preset sensitivity threshold and the preset resolution threshold respectively. If the sensitivity or resolution does not exceed the corresponding preset threshold, a feasibility abnormality signal is generated; if both the sensitivity and the resolution exceed the corresponding preset threshold, a feasibility qualified signal is generated.
[0010] Furthermore, the cutting intelligent adjustment unit is communicatively connected to the cutting tracking and analysis module, and the cutting intelligent adjustment unit sends the adjustment results of the process parameters of the cutting equipment to the cutting tracking and analysis module, and the cutting tracking and analysis module performs cutting tracking analysis on the cutting process of the cutting equipment to determine the cutting execution status of the cutting equipment, and generates a cutting tracking qualified signal or a cutting tracking unqualified signal accordingly, and sends the cutting tracking unqualified signal to the cutting control display end, which displays the cutting tracking unqualified signal and issues a corresponding warning.
[0011] Furthermore, the specific analysis process of cutting tracking analysis includes: Obtain the process parameters that the cutting equipment needs to track, collect the detection data of the corresponding process parameters, and compare the detection data with the corresponding data in the adjustment results of the cutting equipment process parameters. If the detection data of the corresponding process parameters does not meet the corresponding adjustment requirements, the corresponding process parameters will be marked as tracking deviation parameters; if there is no tracking deviation parameter, a cutting tracking qualified signal is generated.
[0012] Furthermore, if there is a tracking deviation parameter, the detection data of the corresponding tracking deviation parameter is compared with the deviation degree value of the corresponding adjustment requirement and marked as a tracking deviation value, and each process parameter is set in advance to correspond to a set of preset cutting influence weight values, and the tracking deviation value of the corresponding tracking deviation parameter is multiplied by the corresponding preset cutting influence weight value to obtain the cutting parameter value; The cutting parameter values of all tracking deviation parameters are obtained, and all cutting parameter values are summed up to obtain the cutting tracking anomaly coefficient, and the cutting tracking anomaly coefficient is numerically compared with the preset cutting tracking anomaly coefficient threshold. If the cutting tracking anomaly coefficient exceeds the preset cutting tracking anomaly coefficient threshold, a cutting tracking unqualified signal is generated; if the cutting tracking anomaly coefficient does not exceed the preset cutting tracking anomaly coefficient threshold, a cutting tracking qualified signal is generated.
[0013] Furthermore, the cutting tracking analysis module is also used to count and store the number of times the cutting tracking qualified signal and the cutting tracking unqualified signal are generated, and the number of times the cutting tracking unqualified signal is generated within the detection period is calculated by ratio to the total number of cutting tracking analyses to obtain the cutting tracking anomaly value; The cutting tracking table deviation value is compared with the preset cutting tracking table deviation threshold. If the cutting tracking table deviation value exceeds the preset cutting tracking table deviation threshold, a cutting stop signal is generated and sent to the cutting control display end. When the cutting control display end receives the cutting stop signal, it will be displayed and a corresponding warning will be issued.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the polarizer cutting process is monitored in real time by laser scanning technology, the verticality calculation and analysis unit performs algorithm processing to calculate the verticality of the polarizer cutting surface, and the cutting intelligent adjustment unit automatically adjusts the process parameters of the cutting equipment based on the verticality calculation result, thereby improving the production efficiency and product quality of the polarizer, reducing the production cost and the difficulty of cutting control management, and by reasonably analyzing the operating conditions of the laser scanning operation unit and providing timely warnings, it is conducive to the stable operation of the laser scanning operation unit and ensuring the cutting effect of the polarizer, with a high level of automation and intelligence; 2. In the present invention, the adjustment results of the process parameters of the cutting equipment are sent to the cutting tracking and analysis module through the cutting intelligent adjustment unit. The cutting tracking and analysis module performs cutting tracking analysis on the cutting process of the cutting equipment to determine the cutting execution status of the cutting equipment. When a cutting tracking unqualified signal is generated, manual adjustment or suspension of the cutting operation is performed to further ensure the cutting effect of the polarizer and reduce the difficulty of supervising the polarizer cutting process. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings; Figure 1 This is a system block diagram of Embodiment 1 of the present invention; Figure 2 This is a system block diagram of Embodiment 2 of the present invention. DETAILED DESCRIPTION
[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.
[0017] Embodiment 1: Figure 1 As shown, the present invention proposes a verticality monitoring system for polarizer processing and cutting based on laser scanning, including a laser scanning operation unit, a verticality calculation and analysis unit, a cutting intelligent adjustment unit, an operation feasibility analysis unit and a cutting control display terminal; The operator sends a start command to the laser scanning operation unit through the cutting control display terminal. The laser scanning operation unit starts to operate when receiving the start command. The laser scanning operation unit integrates the laser emission, scanning control and signal receiving functions, and sends the received electrical signals related to the polarizer to be cut to the verticality calculation and analysis unit. By adopting laser scanning technology, the verticality of the polarizer cutting process can be monitored in real time to ensure that the cutting accuracy reaches the micron level. It should be noted that the laser scanning operation unit includes a laser generating module, a scanning mirror module and a laser receiving module, wherein the laser emitting module emits a high-intensity laser beam through a laser, and the laser beam is processed by specific optical elements (such as a beam expander, a collimator, etc.) to form a stable and parallel laser beam; The scanning mirror module projects the laser beam onto the surface of the polarizer to be cut along a predetermined trajectory through a high-speed rotating scanning mirror, and the rotation speed and angle of the scanning mirror can be precisely controlled to ensure that the laser beam can evenly cover the entire cutting area; the laser receiving module is used to receive the laser signal reflected from the surface of the polarizer, and the laser receiving module contains a highly sensitive photodetector to convert the received optical signal into an electrical signal.
[0018] The verticality calculation and analysis unit receives the electrical signal output by the laser scanning operation unit, calculates the verticality of the cutting surface of the polarizer through corresponding algorithm processing, and sends the calculation result to the cutting intelligent adjustment unit and the cutting control display end. The specific analysis process of the verticality calculation and analysis unit is as follows: Data reception: Receive the electrical signals output by the laser scanning operation unit through a high-speed interface (such as USB, Ethernet, etc.). These electrical signals represent the intensity, phase or frequency characteristics of the laser beam reflected from the surface of the polarizer, which are directly related to the verticality of the cut surface of the polarizer; Signal preprocessing: After receiving the electrical signal, a series of preprocessing operations are performed to eliminate noise and improve signal quality. The preprocessing operations include filtering, amplification, and digitization. The filtering operation can remove high-frequency noise and interference, the amplification operation can enhance the strength of the signal, and the digitization operation converts the analog signal into a digital signal to facilitate subsequent digital signal processing. Feature extraction: Extract features from the preprocessed signal. Feature extraction is a key step in algorithm processing. It aims to extract feature quantities directly related to the verticality of the cut surface of the polarizer from the signal. These feature quantities include the reflection intensity distribution, phase difference, frequency change, etc. of the laser beam. Through a specific algorithm, these feature quantities can be accurately identified to provide basic data for verticality calculation. Verticality calculation: Based on feature extraction, a specific algorithm is used to calculate the verticality of the cut surface of the polarizer. The specific algorithm used is based on the principle of geometric optics, laser scattering theory or machine learning model, and the core of the algorithm is to match or compare the extracted feature quantity with the known verticality standard or model to obtain the verticality value of the cut surface; Moreover, during the calculation process, the verticality calculation and analysis unit will also consider some influencing factors, such as the divergence angle of the laser beam, the material properties of the polarizer, the accuracy of the cutting equipment, etc. These factors may have a certain impact on the calculation results of the verticality, so corresponding compensation or correction is performed in the algorithm.
[0019] The cutting control display terminal displays the received calculation results. After receiving the calculation results, the cutting intelligent adjustment unit automatically adjusts the process parameters of the cutting equipment (such as cutting speed, cutting depth, etc.) based on the calculation results to control the cutting process of the polarizer by the cutting equipment. The cutting cycle is greatly shortened through automated monitoring and adjustment process, the production efficiency and product quality of the polarizer are improved, the need for manual inspection and mechanical measurement is reduced, and the production cost and difficulty of cutting control management are significantly reduced.
[0020] When the laser scanning operation unit is running, the operation feasibility analysis unit analyzes the operation feasibility of the laser scanning operation unit, generates a feasibility qualified signal or a feasibility abnormal signal through the analysis, and sends the feasibility abnormal signal to the cutting control display end when the feasibility abnormal signal is generated; When the cutting control display receives the abnormal feasibility signal, it will display it and issue a corresponding warning. It can reasonably analyze the operating conditions of the laser scanning operation unit and issue a timely warning to remind the operator to take corresponding improvement measures in time, which is conducive to the stable operation of the laser scanning operation unit and ensure the cutting effect of the polarizer. The specific analysis process of the operation feasibility analysis unit is as follows: Obtain environmental information about the environment in which the laser scanning operation unit is located, including light intensity (light intensity should be moderate to reduce the interference that the laser signal is susceptible to), ambient temperature (too high or too low a temperature can easily lead to a decrease in laser power or a decrease in scanning mirror accuracy), ambient humidity (too high humidity can easily lead to condensation inside the laser and scanning mirror, thus affecting their performance) and air turbidity (i.e., the data value of the dust concentration in the environment; a turbid environment can affect beam propagation); The difference between the ambient temperature and the median of the preset suitable ambient temperature range is calculated and the absolute value is taken to obtain the ambient temperature coefficient, and the difference between the light intensity and the median of the preset suitable light intensity range is calculated and the absolute value is taken to obtain the light intensity coefficient; The environmental feasibility coefficient T is calculated by weighted summing up the light intensity coefficient X, the ambient temperature coefficient F, the ambient humidity Q and the air pollution H through the formula T=w×X+c×F+s×Q+e×H, wherein w, c, s, and e are preset weight coefficients whose values are greater than zero, and the larger the value of the environmental feasibility coefficient T, the less suitable the current environment is for the operation of the laser scanning operation unit; the environmental feasibility coefficient T is numerically compared with the preset environmental feasibility coefficient threshold value. If the environmental feasibility coefficient T exceeds the preset environmental feasibility coefficient threshold value, it indicates that the current environment is not suitable for the operation of the laser scanning operation unit, and a feasibility abnormality signal is generated.
[0021] Furthermore, if the environmental feasibility coefficient T does not exceed the preset environmental feasibility coefficient threshold, indicating that the current environment is more suitable for the operation of the laser scanning operation unit, the intensity and wavelength of the laser beam emitted by the laser generating module in the laser scanning operation unit are collected and marked as the laser beam intensity and the laser beam wavelength, respectively, and the laser beam intensity and the laser beam wavelength are numerically compared with the preset laser beam intensity range and the preset laser beam wavelength range, respectively. If the laser beam intensity or the laser beam wavelength is not within the corresponding preset range, indicating that the operation of the laser generating module is relatively abnormal, a feasibility abnormality signal is generated; If the intensity and wavelength of the laser beam are both within the corresponding preset ranges, indicating that the operation of the laser generating module is relatively normal, the scanning speed and scanning accuracy of the scanning mirror module in the laser scanning operation unit are collected, and the scanning speed and scanning accuracy are numerically compared with the preset scanning speed range and the preset scanning accuracy threshold, respectively. If the scanning speed is not within the preset scanning speed range or the scanning accuracy does not exceed the preset scanning accuracy threshold, indicating that the operation of the scanning mirror module is relatively abnormal, a feasibility abnormality signal is generated; If the scanning speed is within the preset scanning speed range and the scanning accuracy exceeds the preset scanning accuracy threshold, indicating that the operation of the scanning mirror module is relatively normal, the sensitivity and resolution of the laser receiving module in the laser scanning operation unit are collected, and the sensitivity and resolution are numerically compared with the preset sensitivity threshold and the preset resolution threshold respectively. If the sensitivity or resolution does not exceed the corresponding preset threshold, indicating that the operation of the laser receiving module is relatively abnormal, a feasibility abnormality signal is generated; if both the sensitivity and the resolution exceed the corresponding preset threshold, indicating that the laser scanning operation unit can currently operate safely and stably, a feasibility qualified signal is generated.
[0022] Embodiment 2: Figure 2 As shown, the difference between this embodiment and the first embodiment is that the cutting intelligent adjustment unit is communicatively connected to the cutting tracking analysis module, and the cutting intelligent adjustment unit sends the adjustment result of the process parameters of the cutting equipment to the cutting tracking analysis module, and the cutting tracking analysis module performs cutting tracking analysis on the cutting process of the cutting equipment to determine the cutting execution status of the cutting equipment, and generates a cutting tracking qualified signal or a cutting tracking unqualified signal accordingly; The unqualified cutting tracking signal is sent to the cutting control display end, which displays the unqualified cutting tracking signal and issues a corresponding warning to remind the operator to make manual adjustments or suspend the cutting operation in time to further ensure the cutting effect of the polarizer and significantly reduce the difficulty of supervising the polarizer cutting process. The specific analysis process of cutting tracking analysis is as follows: The process parameters that need to be tracked by the cutting equipment are obtained, the detection data of the corresponding process parameters are collected, and the detection data are compared with the corresponding data in the adjustment results of the process parameters of the cutting equipment. If the detection data of the corresponding process parameters does not meet the corresponding adjustment requirements, the corresponding process parameters are marked as tracking deviation parameters; if there is no tracking deviation parameter, it indicates that the real-time cutting condition of the polarizer is good, and a cutting tracking qualified signal is generated.
[0023] Further, if there is a tracking deviation parameter, the detection data of the corresponding tracking deviation parameter is marked as a tracking deviation value compared with the deviation degree value of the corresponding adjustment requirement, and each process parameter is set in advance to correspond to a set of preset cutting influence weight values, wherein the values of the preset cutting influence weight values are all positive numbers, and the more important the corresponding process parameter is, the larger the value of the preset cutting influence weight value matching it is; the tracking deviation value of the corresponding tracking deviation parameter is multiplied by the corresponding preset cutting influence weight value to obtain the cutting parameter value; The cutting parameter values of all tracking deviation parameters are obtained, and all cutting parameter values are summed up to obtain the cutting tracking anomaly coefficient, and the cutting tracking anomaly coefficient is numerically compared with the preset cutting tracking anomaly coefficient threshold. If the cutting tracking anomaly coefficient exceeds the preset cutting tracking anomaly coefficient threshold, it indicates that the real-time cutting condition of the polarizer is not good, and a cutting tracking unqualified signal is generated; if the cutting tracking anomaly coefficient does not exceed the preset cutting tracking anomaly coefficient threshold, it indicates that the real-time cutting condition of the polarizer is good, and a cutting tracking qualified signal is generated.
[0024] Embodiment 3: The difference between this embodiment and Embodiment 1 and Embodiment 2 is that the cutting tracking analysis module is further used to count and store the number of times the cutting tracking qualified signal and the cutting tracking unqualified signal are generated, and the number of times the cutting tracking unqualified signal is generated in the detection period is calculated by ratio with the total number of cutting tracking analysis to obtain the cutting tracking abnormal table value; wherein, the larger the value of the cutting tracking abnormal table value is, the worse the cutting execution performance of the polarizer is during the detection period; The cutting tracking deviation value is compared with the preset cutting tracking deviation threshold. If the cutting tracking deviation value exceeds the preset cutting tracking deviation threshold, indicating that the cutting execution performance of the polarizer during the detection period is poor, a cutting stop signal is generated, and the cutting stop signal is sent to the cutting control display end. When the cutting control display end receives the cutting stop signal, it displays it and issues a corresponding warning to remind the operator to suspend the cutting operation in time, conduct a cause investigation and analysis, and make corresponding improvement measures to avoid poor cutting effect of the polarizer.
[0025] The working principle of the present invention is as follows: when in use, a start instruction is sent to the laser scanning operation unit through the cutting control display end. When the laser scanning operation unit receives the start instruction, it uses laser scanning technology to monitor the verticality of the polarizer cutting process in real time. The verticality calculation and analysis unit calculates the verticality of the cutting surface of the polarizer based on the electrical signal output by the laser scanning operation unit and through corresponding algorithm processing. The cutting intelligent adjustment unit automatically adjusts the process parameters of the cutting equipment based on the verticality calculation result to control the cutting process of the polarizer by the cutting equipment, thereby improving the production efficiency and product quality of the polarizer, reducing the demand for manual inspection and mechanical measurement, and significantly reducing the production cost and the difficulty of cutting control management. The operation feasibility analysis unit performs a reasonable analysis of the operating conditions of the laser scanning operation unit and issues a timely warning to remind the operator to take corresponding improvement measures in time, which is beneficial to the stable operation of the laser scanning operation unit and ensures the cutting effect of the polarizer, and has a high level of automation and intelligence.
[0026] The above formulas are all dimensionless and numerical calculations. The formula is a formula obtained by collecting a large amount of data and performing software simulation to obtain the most recent real situation. The preset parameters in the formula are set by technicians in this field according to actual conditions. The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. The present invention is only limited by the claims and their full scope and equivalents.
Claims
1. A verticality monitoring system for polarizer processing and cutting based on laser scanning, characterized in that: It includes a laser scanning operation unit, a verticality calculation and analysis unit, a cutting intelligent adjustment unit and a cutting control display terminal; the operator sends a start command to the laser scanning operation unit through the cutting control display terminal, and the laser scanning operation unit starts to operate when receiving the start command. The laser scanning operation unit integrates the laser emission, scanning control and signal receiving functions, and sends the received electrical signal related to the polarizer to be cut to the verticality calculation and analysis unit; The verticality calculation and analysis unit receives the electrical signal output by the laser scanning operation unit, calculates the verticality of the cutting surface of the polarizer through corresponding algorithm processing, and sends the calculation result to the cutting intelligent adjustment unit and the cutting control display end; The cutting control display terminal displays the received calculation results. After receiving the calculation results, the cutting intelligent adjustment unit automatically adjusts the process parameters of the cutting equipment based on the calculation results to control the cutting process of the polarizer by the cutting equipment.
2. The verticality monitoring system for polarizer processing and cutting based on laser scanning according to claim 1, characterized in that: The laser scanning operation unit includes a laser generating module, a scanning mirror module and a laser receiving module, wherein the laser emitting module emits a laser beam through a laser, and the laser beam is processed by a specific optical element to form a stable and parallel laser beam; The scanning mirror module projects the laser beam onto the surface of the polarizer to be cut along a predetermined trajectory through a high-speed rotating scanning mirror; the laser receiving module is used to receive the laser signal reflected from the surface of the polarizer, and the laser receiving module includes a highly sensitive photodetector to convert the received optical signal into an electrical signal.
3. The verticality monitoring system for polarizer processing and cutting based on laser scanning according to claim 1, characterized in that: The specific analysis process of the verticality calculation and analysis unit is as follows: Data reception: Receive the electrical signal output by the laser scanning operation unit through a high-speed interface; Signal preprocessing: After receiving the electrical signal, a series of preprocessing operations are performed to eliminate noise and improve signal quality. The preprocessing operations include filtering, amplification and digitization steps; Feature extraction: extract features from the preprocessed signal, and extract features directly related to the verticality of the cut surface of the polarizer from the signal, where the extracted features include the reflection intensity distribution, phase difference and frequency change of the laser beam; Verticality calculation: Based on feature extraction, a specific algorithm is used to calculate the verticality of the cut surface of the polarizer. The specific algorithm used is based on the principle of geometric optics, laser scattering theory or machine learning model, and the core of the algorithm is to match or compare the extracted feature quantity with the known verticality standard or model to obtain the verticality value of the cut surface.
4. The verticality monitoring system for polarizer processing and cutting based on laser scanning according to claim 1, characterized in that: The laser scanning operation unit is communicatively connected to the operation feasibility analysis unit. When the laser scanning operation unit is running, the operation feasibility analysis unit analyzes the operation feasibility of the laser scanning operation unit, and generates a feasibility qualified signal or a feasibility abnormal signal through analysis. When the feasibility abnormal signal is generated, it is sent to the cutting control display end. When the cutting control display end receives the feasibility abnormal signal, it displays it and issues a corresponding warning.
5. The verticality monitoring system for polarizer processing and cutting based on laser scanning according to claim 4, characterized in that: The specific analysis process of the operational feasibility analysis unit includes: Acquire environmental information of the environment in which the laser scanning operation unit is located, wherein the acquired environmental information includes light intensity, ambient temperature, ambient humidity and air pollution, calculate the difference between the ambient temperature and the median of a preset suitable ambient temperature range and take the absolute value to obtain the ambient temperature coefficient, calculate the difference between the light intensity and the median of a preset suitable light intensity range and take the absolute value to obtain the light intensity coefficient; The environmental feasibility coefficient is calculated by weighted summation of the light intensity coefficient, ambient temperature coefficient, ambient humidity and air turbidity. If the environmental feasibility coefficient exceeds the preset environmental feasibility coefficient threshold, a feasibility anomaly signal is generated.
6. The verticality monitoring system for polarizer processing and cutting based on laser scanning according to claim 5, characterized in that: If the environmental feasibility coefficient does not exceed the preset environmental feasibility coefficient threshold, the intensity and wavelength of the laser beam emitted by the laser generating module in the laser scanning operation unit are collected and marked as the laser beam intensity and the laser beam wavelength respectively. If the laser beam intensity or the laser beam wavelength is not within the corresponding preset range, a feasibility abnormality signal is generated; If the intensity and wavelength of the laser beam are both within the corresponding preset ranges, the scanning speed and scanning accuracy of the scanning mirror module in the laser scanning operation unit are collected; if the scanning speed is not within the preset scanning speed range or the scanning accuracy does not exceed the preset scanning accuracy threshold, a feasibility abnormality signal is generated; If the scanning speed is within the preset scanning speed range and the scanning accuracy exceeds the preset scanning accuracy threshold, the sensitivity and resolution of the laser receiving module in the laser scanning operation unit are collected, and if the sensitivity or resolution does not exceed the corresponding preset threshold, a feasibility abnormality signal is generated; If both the sensitivity and resolution exceed the corresponding preset thresholds, a feasibility qualified signal is generated.
7. The verticality monitoring system for polarizer processing and cutting based on laser scanning according to claim 1, characterized in that: The cutting intelligent adjustment unit is communicatively connected to the cutting tracking and analysis module. The cutting intelligent adjustment unit sends the adjustment results of the process parameters of the cutting equipment to the cutting tracking and analysis module. The cutting tracking and analysis module performs cutting tracking analysis on the cutting process of the cutting equipment to determine the cutting execution status of the cutting equipment, and generates a cutting tracking qualified signal or a cutting tracking unqualified signal accordingly, and sends the cutting tracking unqualified signal to the cutting control display end, which displays the cutting tracking unqualified signal and issues a corresponding warning.
8. The verticality monitoring system for polarizer processing and cutting based on laser scanning according to claim 7, characterized in that: The specific analysis process of cutting tracking analysis includes: Obtain the process parameters that the cutting equipment needs to track, collect the detection data of the corresponding process parameters, and compare the detection data with the corresponding data in the adjustment results of the cutting equipment process parameters. If the detection data of the corresponding process parameters does not meet the corresponding adjustment requirements, the corresponding process parameters will be marked as tracking deviation parameters; if there is no tracking deviation parameter, a cutting tracking qualified signal is generated.
9. The verticality monitoring system for polarizer processing and cutting based on laser scanning according to claim 8, characterized in that: If there is a tracking deviation parameter, the detection data of the corresponding tracking deviation parameter is compared with the deviation degree value of the corresponding adjustment requirement and marked as a tracking deviation value. Each process parameter is set in advance to correspond to a set of preset cutting influence weight values. The tracking deviation value of the corresponding tracking deviation parameter is multiplied by the corresponding preset cutting influence weight value to obtain the cutting parameter value. The cutting parameter values of all tracking deviation parameters are obtained, and all cutting parameter values are summed up to obtain a cutting tracking abnormality coefficient. If the cutting tracking abnormality coefficient exceeds a preset cutting tracking abnormality coefficient threshold, a cutting tracking unqualified signal is generated; If the cutting and tracking abnormality coefficient does not exceed the preset cutting and tracking abnormality coefficient threshold, a cutting and tracking qualified signal is generated.
10. The verticality monitoring system for polarizer processing and cutting based on laser scanning according to claim 8, characterized in that: The cutting tracking analysis module is also used to count and store the number of times the cutting tracking qualified signal and the cutting tracking unqualified signal are generated, and the number of times the cutting tracking unqualified signal is generated within the detection period is calculated by ratio to the total number of cutting tracking analyses to obtain the cutting tracking abnormal table value; If the cutting tracking table deviation value exceeds the preset cutting tracking table deviation threshold, a cutting stop signal is generated and sent to the cutting control display end. When the cutting control display end receives the cutting stop signal, it is displayed and a corresponding warning is issued.