CN-121977800-A - Processing method and system for optical distortion detection data of flexible cover plate of folding screen

CN121977800ACN 121977800 ACN121977800 ACN 121977800ACN-121977800-A

Abstract

The invention discloses a method and a system for processing optical distortion detection data of a flexible cover plate of a folding screen, and relates to the technical field of data processing, wherein the method comprises the steps of synchronously acquiring an optical distortion data sequence and a real-time bending angular velocity of each cover plate detection area; the method comprises the steps of carrying out normalization processing on data based on bending angular velocity to generate an optical distortion gradient sequence, extracting a structural stress yield period characteristic window of each region, carrying out reverse translation compensation on a time period where the characteristic window is located by combining a space linear distance between the regions and an internal stress wave conduction velocity constant, obtaining an interlayer stress conduction coupling factor as a correlation coefficient according to the overlapping proportion of a main time period and a compensated time period, calculating a current correction coefficient according to the correlation coefficient, generating a real-time distortion threshold value, and obtaining a processing strategy by combining a current distortion value. The invention has the advantages of dynamic noise reduction, physical hysteresis compensation and threshold self-adaption.

Inventors

TANG HAOCHENG
HUANG QIUMIN
CHEN GAOFENG
ZHAO CHAOXUN

Assignees

四川展新胶粘材料有限公司

Dates

Publication Date: 20260505
Application Date: 20260407

Claims (10)

1. The method for processing the optical distortion detection data of the flexible cover plate of the folding screen is characterized by comprising the following steps of: Acquiring optical distortion data sequences of a previous detection time period of a plurality of cover plate detection areas, and synchronously acquiring real-time bending angular speeds corresponding to acquisition time points; normalizing the optical distortion data sequence according to the real-time bending angular velocity to obtain an optical distortion gradient sequence, and obtaining a structural stress yield period characteristic window of each cover plate detection area based on the optical distortion gradient sequence; According to the space linear distance between the ith cover plate detection area and each other cover plate detection area and the internal stress wave conduction speed constant, performing reverse translation compensation on the time period of the structural stress yield period characteristic window of each other cover plate detection area to obtain a compensated time period to be processed; Acquiring an interlayer stress conduction coupling factor as a correlation coefficient according to the overlapping proportion of the main time period of the structural stress yield period characteristic window of the ith cover plate detection area and the compensated time period to be processed; And acquiring the current correction coefficient of the ith cover plate detection area according to the correlation coefficient to generate a real-time distortion threshold value, and acquiring a processing strategy based on the real-time distortion threshold value and the optical distortion value at the current moment.
2. The method for processing the optical distortion detection data of the flexible cover plate of the folding screen according to claim 1, wherein the normalizing the optical distortion data sequence according to the real-time bending angular velocity to obtain an optical distortion gradient sequence comprises the following steps: Obtaining a distortion difference value obtained by subtracting a previous optical distortion value from a next optical distortion value of adjacent data in the optical distortion data sequence; dividing a reference bending angular velocity constant preset by the system by the real-time bending angular velocity of the current acquisition time point to obtain an angular velocity compensation proportion; Multiplying the distortion difference value by the angular velocity compensation proportion to obtain an optical distortion gradient corresponding to the acquisition time point, thereby generating an optical distortion gradient sequence of each cover plate detection area.
3. The method for processing the optical distortion detection data of the flexible cover plate of the folding screen according to claim 1, wherein the step of obtaining the structural stress yield period characteristic window of each cover plate detection area based on the optical distortion gradient sequence comprises the following steps: Scanning the optical distortion gradient sequence according to time sequence, and combining two or more optical distortion gradients which are adjacent in sequence and have positive signs to form a continuous degradation zone; And counting the quantity of data contained in each continuous degradation zone, and taking the zone which contains the most quantity of data and exceeds the preset quantity as a structural stress yield period characteristic window of the corresponding cover plate detection zone.
4. A method of processing folded-screen flexible cover sheet optical distortion detection data as set forth in claim 3, further comprising: If the ith cover plate detection area does not have a continuous degradation section or the number of data contained in any continuous degradation section of the ith cover plate detection area does not exceed a preset number, configuring the ith cover plate detection area to have no structural stress yield period characteristic window, and taking a value 1 as a current correction coefficient of the ith cover plate detection area.
5. The method for processing the optical distortion detection data of the flexible cover plate of the folding screen according to claim 1, wherein the step of performing inverse translational compensation on the time period in which the structural stress yield period characteristic window of each other cover plate detection area is located according to the spatial linear distance between the ith cover plate detection area and each other cover plate detection area and the internal stress wave conduction velocity constant, and obtaining the compensated time period to be processed includes: taking the time periods of the structural stress yield period characteristic windows of other cover plate detection areas as corresponding time periods to be processed respectively; Dividing the space linear distance between the sensor center point of each other cover plate detection area and the sensor center point of the ith cover plate detection area by the internal stress wave conduction speed constant to obtain corresponding theoretical stress hysteresis time; And reversely translating the length of the theoretical stress hysteresis time in the corresponding time period to be processed on a time axis, and generating the compensated time period to be processed corresponding to each cover plate detection area.
6. The method for processing optical distortion detection data of a flexible cover plate of a folding screen according to claim 5, wherein the obtaining interlayer stress conduction coupling factor as the association coefficient according to the overlapping proportion of the main time period of the structural stress yield period characteristic window of the i-th cover plate detection area and the compensated waiting time period comprises: Acquiring an overlapped time period between the main time period and the compensated waiting time period of each cover plate detection area; Dividing the length of each overlapping time period by the length of the main time period to obtain interlayer stress conduction coupling factors, and taking each interlayer stress conduction coupling factor as a correlation coefficient between the ith cover plate detection area and other cover plate detection areas; and judging that the corresponding overlapping time period length of the cover plate detection area configured without the structural stress yield period characteristic window is zero.
7. The method of claim 1, further comprising, prior to acquiring the optical distortion data sequence: judging whether the detection time period at the current moment is the first detection time period or not; If the detection time period is the first detection time period, each cover plate detection area is configured to be in an independent state, a numerical value 1 is used as a current correction coefficient of all the cover plate detection areas, and a calibration distortion threshold value prestored in the system is called as a processing strategy at the current moment.
8. The method for processing the optical distortion detection data of the flexible cover plate of the folding screen according to claim 1, wherein obtaining the current correction coefficient of the detection area of the ith cover plate according to the association coefficient comprises the following steps: Traversing the association coefficients between the ith cover plate detection area and all other cover plate detection areas, obtaining the number of the association coefficients with the values lower than the standard association threshold value, and taking the number as a first number; and calculating the difference value between the total cover plate detection area number and the numerical value 1, and dividing the first number by the difference value to obtain the current correction coefficient of the ith cover plate detection area.
9. The method for processing the optical distortion detection data of the flexible cover plate of the folding screen according to claim 8, wherein generating the real-time distortion threshold according to the current correction coefficient comprises: And multiplying one half of a calibration distortion threshold preset in the ith cover plate detection area by the current correction coefficient, and adding the product result to one half of the calibration distortion threshold to generate a real-time distortion threshold of the ith cover plate detection area.
10. A folding screen flexible cover optical distortion detection data processing system, wherein the system is configured to implement a folding screen flexible cover optical distortion detection data processing method according to any one of claims 1 to 9, and the system includes: The acquisition module is used for acquiring optical distortion data sequences of a previous detection time period of the detection areas of the plurality of cover plates and synchronously acquiring real-time bending angular speeds of corresponding acquisition time points; The first data processing module is used for carrying out normalization processing on the optical distortion data sequence according to the real-time bending angular velocity to obtain an optical distortion gradient sequence, and obtaining a structural stress yield period characteristic window of each cover plate detection area based on the optical distortion gradient sequence; The second data processing module is used for carrying out reverse translation compensation on the time period of the structural stress yield period characteristic window of each other cover plate detection area according to the space linear distance between the ith cover plate detection area and each other cover plate detection area and the internal stress wave conduction speed constant, and obtaining a time period to be processed after compensation; acquiring an interlayer stress conduction coupling factor as a correlation coefficient according to the overlapping proportion of the main time period of the structural stress yield period characteristic window of the ith cover plate detection area and the compensated time period to be processed; and the third data processing module is used for acquiring the current correction coefficient of the ith cover plate detection area according to the association coefficient so as to generate a real-time distortion threshold value, and acquiring a processing strategy based on the real-time distortion threshold value and the optical distortion value at the current moment.

Description

Processing method and system for optical distortion detection data of flexible cover plate of folding screen Technical Field The invention relates to the technical field of data processing, in particular to a folding screen flexible cover plate optical distortion detection data processing method and system. Background In the field of manufacturing and quality control of flexible cover plates of folding screens, the existing optical distortion detection data processing technology has limitations in application scenes of multi-region optical performance monitoring of the cover plates under dynamic alternating load. Specifically, existing detection methods generally collect and analyze the optical distortion values of various regions in isolation, failing to integrate distortion evolution with the real-time folding dynamics parameters of the flexible cover plate. Because the polymer flexible material can generate nonlinear transient elastic deformation amplification phenomena at different bending angular speeds, the prior art is difficult to peel off the kinematic deformation interference caused by the change of the folding action speed, and the normal elastic shock increase is easy to be misjudged as material fatigue, so that the continuous degradation interval of the structure is difficult to be accurately locked. In addition, when the cover plate is folded and the central area of the cover plate is initiated and micro interlayer peeling or stress yielding occurs, time delay determined by physical properties of high polymer materials exists in transmission of internal stress wave to the peripheral transition area and the edge flattening area, and the existing synchronous data comparison mechanism based on absolute time stamps does not consider the space physical transmission delay, so that deformation coupling windows of all areas are difficult to align on a time axis. The lack of dynamic normalization mechanism and physical hysteresis compensation capability makes the existing system rely on fixed threshold values to independently judge, so that interlayer stress conduction coupling strength among multiple areas is difficult to accurately quantify, and when the global structural synergy failure caused by local stress conduction is faced, an alarm datum line cannot be self-adaptively regulated, so that missed detection of a cover plate microstructure crack derivative period and early warning hysteresis of yield of a production line are caused. Disclosure of Invention Aiming at the technical problems recorded in the background technology, the invention provides a method and a system for processing optical distortion detection data of a flexible cover plate of a folding screen. A processing method for optical distortion detection data of a flexible cover plate of a folding screen comprises the steps of obtaining an optical distortion data sequence of a previous detection time period of a plurality of cover plate detection areas, synchronously obtaining real-time bending angular velocity corresponding to a collection time point, carrying out normalization processing on the optical distortion data sequence according to the real-time bending angular velocity, obtaining an optical distortion gradient sequence, obtaining a structural stress yield period characteristic window of each cover plate detection area based on the optical distortion gradient sequence, carrying out inverse translation compensation on the time period of the structural stress yield period characteristic window of each other cover plate detection area according to the space linear distance between the i-th cover plate detection area and each other cover plate detection area and an internal stress wave conduction velocity constant, obtaining a to-be-processed time period after compensation, obtaining interlayer stress conduction coupling factors as correlation coefficients according to the overlapping proportion of a main time period of the structural stress yield period characteristic window of the i-th cover plate detection area and the to-be-processed time period after compensation, obtaining a current correction coefficient of the i-th cover plate detection area according to the correlation coefficients, so as to generate a real-time distortion threshold value, and obtaining a processing strategy based on the real-time distortion threshold and an optical distortion value at the current moment. Optionally, normalizing the optical distortion data sequence according to the real-time bending angular velocity to obtain an optical distortion gradient sequence, wherein the optical distortion gradient sequence comprises the steps of obtaining a distortion difference value of a previous optical distortion value subtracted from a next optical distortion value of adjacent data in the optical distortion data sequence, dividing a reference bending angular velocity constant preset by the system by the real-time bending angular velocity of the current acqu