Vibration Compensation Method Applicable to Laser On-line Thickness Measurement
A technology of vibration compensation and thickness measurement, which is applied in the direction of optical devices, measuring devices, instruments, etc., can solve problems such as errors and achieve the effect of optimizing precision
Active Publication Date: 2021-08-03
SHENZHEN XINYUREN TECH
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Problems solved by technology
[0005] The present invention mainly aims at the error problem caused by vibration to the measurement results in the current online laser thickness measurement process, and proposes a vibration compensation and precision optimization method, which can analyze the reflection of vibration in the data spectrum from the thickness measurement data, and Better separate the vibration signal, realize vibration compensation and precision optimization of measurement results under the premise of retaining the real thickness fluctuation information
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[0030] In order to make the purpose, scheme and advantages of the present invention clearer, the following examples are given as examples, and the present invention is further described in detail in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0031] attached figure 1 It is a flowchart of a vibration compensation method suitable for laser on-line thickness measurement in the present invention; figure 2 It is a flow chart of determining the similarity interval of the spectrum of the strip to be tested and the copper foil through the cosine similarity.
[0032] The present invention takes the lithium-ion battery pole piece rolling process and the onlin...
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The invention belongs to the field of on-line detection during film manufacturing and processing, and more specifically relates to a vibration compensation method suitable for laser on-line thickness measurement. The method includes the following contents: (1) Using the laser online thickness measurement system, in the same measurement environment, conduct online scanning measurement of the strip to be tested and high-precision copper foil; (2) The strip and copper foil thickness measurement data include Vibration error during scanning measurement, copper foil manufacturing accuracy is high, most of the errors in the data are caused by vibration, and the strip to be tested is also affected by similar vibration; (3) Perform spectrum analysis on the thickness measurement data, observe the data Frequency composition information; (4) Comparative analysis of the similarity of the spectrum of the strip to be tested and copper foil, appropriate processing of the data, well removed the influence of vibration on the online scanning thickness measurement, and realized the vibration compensation of the thickness measurement data and Precision optimization.
Description
technical field [0001] The invention belongs to the field of on-line detection during film manufacturing and processing, and more specifically relates to a vibration compensation method suitable for laser on-line thickness measurement. Background technique [0002] Due to the advantages of safety and reliability, high measurement accuracy, and large measurement range, laser thickness measurement is widely used in the thickness detection of paper, lithium-ion battery pole pieces, organic battery films, fuel cell electrodes, and functional films. Film manufacturing mostly adopts low-cost and high-efficiency roll-to-roll manufacturing process. In the process of manufacturing, the thickness measurement in the width direction of the strip needs to adopt multi-sensor or scanning measurement. The latter undoubtedly greatly reduces the cost, but its The unavoidable vibrations introduced during scanning affect the measurement accuracy. [0003] Regarding the control of errors caused...
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IPC IPC(8): G01B11/06
CPCG01B11/06
Inventor 周华民宋华雄杨志明张云周军王云明
Owner SHENZHEN XINYUREN TECH