Rapid compensation method for detection precision under cotton fiber length imbalance
By using the fast compensation method for detection accuracy under non-equilibrium cotton fiber length in cotton length detection equipment, the problem of cotton fiber rebate affecting detection accuracy is solved, and more accurate and efficient cotton fiber length detection is achieved, which improves the reliability of the detection results and product quality.
Patent Information
- Application Number
- CN202510209768.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2025-05-30
AI Technical Summary
In the cold and dry environment of existing cotton length detection equipment, the cotton fiber reflux rate has a great impact on the test results, resulting in low detection accuracy.
A quick compensation method for detection accuracy under non-equilibrium cotton fiber length is adopted. The moisture rebate rate is detected by quantitative sampling and raw cotton moisture rebate measurer, and the length compensation value is calculated, and the cotton fiber length is detected by machine vision, and the compensation calculation is carried out to obtain the accurate length.
It improves the accuracy of cotton fiber length detection, reduces errors, and improves the reliability of detection results. It is suitable for different length distribution and detection environments, reduces the influence of human factors, shortens the detection time, and improves the detection efficiency and product quality.
Smart Images
Figure CN120063183A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of cotton detection, and particularly relates to a method for quickly compensating the detection accuracy under unbalanced cotton fiber lengths. Background Art
[0002] Cotton is a production material related to the national economy and people's livelihood. In the process of cotton production and processing, quality inspection and grading are indispensable, which have a crucial impact on the cotton blending quality of spinning enterprises. By detecting and grading the quality of cotton, the purpose of promoting the effective utilization of resources and improving quality and efficiency can be achieved. Existing testing instruments mainly comprehensively reflect the quality of cotton through five detection indexes: length, strength, fineness, color characteristics, and impurity content. Among them, the indexes for measuring the length of cotton mainly include staple length, quality length, average length, short fiber rate, evenness, etc. The longer the staple length, the lower the short fiber rate, and the higher the evenness, the more beneficial it is for spinning. Nowadays, the HVI large-capacity tester based on Hertel's sampling theory has become the mainstream for detecting the length of cotton fibers.
[0003] Most current cotton length detection instruments have high requirements for the environment and need to be balanced for 24 hours in a standard environment to detect relatively accurate cotton length values. Moreover, they are greatly affected by the moisture regain rate of cotton fibers. However, cotton length equipment is in the greatest demand in cotton processing plants, and the conditions of most cotton processing plants are difficult to equip with standard constant temperature and humidity rooms. Therefore, the present invention aims at a method for quickly compensating the detection accuracy under unbalanced cotton fiber lengths according to the moisture regain rate of cotton under balanced conditions.
[0004] Currently, there are mainly two methods for detecting cotton length: 1. Hand-stretching method: The fiber length of cotton is measured through manual operation. The operator will extract a small amount of fibers from the cotton sample, flatten and stretch them, and then compare them with a standard scale to determine the fiber length. However, the differences in the experience, skills, and physical strength of the operator will all affect the accuracy of the measurement results, and the hand-stretching method is a relatively slow process and is not suitable for large-scale and high-efficiency cotton quality detection; 2. Cotton tester (HVI) under standard environment: An optical sensor is used to analyze the fiber sample, which can process a large number of samples in a short time and the results are relatively accurate. However, most current cotton length equipment (HVI) relies on a standard environment and is mostly distributed in cotton fiber inspection institutes. For most cotton processing plants, although they are equipped with cotton length equipment detectors, due to the influence of cold and dry environments, the moisture regain rate of cotton fibers has a great impact on the test results. Summary of the Invention
[0005] To solve the problem that the current cotton length equipment detector is greatly affected by the moisture regain rate of cotton fibers due to the influence of cold and dry environments; The present invention provides a method for quickly compensating the detection accuracy under unbalanced cotton fiber lengths; Quantitatively sample the cotton sample to be measured, use the raw cotton moisture regain tester to detect the moisture regain x of the cotton sample to be measured, and calculate the length compensation value y of the cotton sample to be measured according to the length compensation formula. The formula is: y = k×(x–a)+b; Where a is the moisture regain compensation reference value, k is the slope of the length compensation formula, and b is the intercept of the length compensation formula.
[0006] As a preferred solution, the moisture regain compensation reference value a is the moisture regain value of cotton fibers measured after being balanced in the standard environment of the fiber inspection institute for 24 hours.
[0007] As a preferred solution, when the moisture regain x of the cotton sample to be measured is equal to 0 compared with the moisture regain compensation reference value a, the length compensation value y of the cotton sample to be measured is equal to 0.
[0008] As a preferred solution, the slope k and the intercept b are obtained by linear fitting calculation.
[0009] As a preferred solution, the cotton fiber length value is detected by machine vision and added to the cotton sample length compensation value y to obtain the compensated cotton fiber length.
[0010] The beneficial effects of the present invention are as follows: A method for quickly compensating the detection accuracy of cotton fiber length under non-equilibrium conditions of the present invention can more accurately measure the length of cotton fibers through the compensation method, reduce errors, and improve the reliability of detection results; the quick compensation method can adapt to cotton fibers with different length distributions and different detection environments, making the detection system more flexible and applicable to various cotton samples; the automated compensation method reduces the influence of human factors and reduces errors caused by the subjective judgment of operators; the quick compensation method can shorten the detection time and improve the detection efficiency, especially more obvious in large-scale detections; the compensation method helps to improve the consistency of detection results between different detection devices or different operators; more accurate detection results help to better control the quality of cotton, thereby improving the quality of the final product; it reduces raw material waste and product quality problems caused by detection errors, thereby reducing production costs. Description of the Drawings
[0011] In order to make the content of the present invention easier to be clearly understood, the following further details the present invention according to specific embodiments in conjunction with the drawings, where Figure 1 The flowchart of the present invention. Detailed Embodiments
[0012] To illustrate the characteristics of the present invention, the present invention will be further described below in conjunction with the drawings and embodiments.
[0013] Embodiment: Please refer toFigure 1 , in an embodiment of the present invention, a method for quickly compensating the detection accuracy under unbalanced cotton fiber lengths. First, quantitatively sample 50±5g of the cotton sample to be tested. Use a raw cotton moisture regain detector to detect that the moisture regain x of the cotton sample to be tested is 4.89%. After equilibration in the standard environment of the fiber inspection institute for 24 hours, the moisture regain compensation reference value a of the cotton fiber is equal to 6.5%.
[0014] In addition, through linear fitting calculation, the slope k of the length compensation formula is equal to -0.4, and the intercept b of the length compensation formula is equal to 0.01. Finally, calculate the length compensation value y of the cotton sample to be tested according to the length compensation formula. The formula is: y = k×(x–a)+b = -0.4(4.89 - 6.5)+0.01 = 0.65; Particularly, when the moisture regain x of the cotton sample to be tested is equal to 0 compared with the moisture regain compensation reference value a, the length compensation value y of the cotton sample to be tested is equal to 0.
[0015] After the compensation calculation is completed, use the machine vision method to detect that the cotton fiber length value is 29.31mm. Add it to the cotton sample length compensation value y to obtain the compensated cotton fiber length of 29.96mm.
[0016] Through the compensation method in this embodiment, the length of cotton fibers can be measured more accurately, reducing errors and improving the reliability of the detection results; the quick compensation method can adapt to cotton fibers with different length distributions and different detection environments, making the detection system more flexible and applicable to various cotton samples; the automated compensation method reduces the influence of human factors and reduces the errors caused by the subjective judgment of the operator; the quick compensation method can shorten the detection time and improve the detection efficiency, especially more obvious in large-scale detections; the compensation method helps to improve the consistency of detection results between different detection devices or different operators; more accurate detection results help to better control the quality of cotton, thereby improving the quality of the final product; it reduces the waste of raw materials and product quality problems caused by detection errors, thereby reducing production costs.
[0017] The above embodiments and the accompanying drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions, or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention do not depart from the purpose of the present invention and should also fall within the scope of the claims of the present invention. Other related technical structures not exhaustively disclosed in the present invention are the prior art in this field.
Claims
1. A method for quickly compensating the detection accuracy of cotton fiber length under unbalanced conditions, characterized in that: Quantitatively sample the cotton sample to be tested, use the raw cotton regain tester to detect the regain x of the cotton sample to be tested, and calculate the length compensation value y of the cotton sample to be tested according to the length compensation formula, which is: y = k × (x – a) + b; Where a is the moisture regain compensation reference value, k is the slope of the length compensation formula, and b is the intercept of the length compensation formula.
2. The method for rapid compensation of cotton fiber length detection accuracy under unbalanced conditions according to claim 1, characterized in that: The moisture regain compensation reference value a is the moisture regain value of cotton fibers measured in a standard constant temperature and humidity environment for more than or equal to 24 hours.
3. The method for rapid compensation of cotton fiber length detection accuracy under unbalanced conditions according to claim 1, characterized in that: When the moisture regain x of the cotton sample to be tested and the moisture regain compensation reference value a are equal to 0, the length compensation value y of the cotton sample to be tested is equal to 0.
4. The method for rapid compensation of cotton fiber length detection accuracy under unbalanced conditions according to claim 1, characterized in that: The slope k and the intercept b are obtained by linear fitting calculation.
5. The method for rapid compensation of cotton fiber length detection accuracy under unbalanced conditions according to claim 1, characterized in that: The cotton fiber length value is detected by machine vision method, and the compensated cotton fiber length is obtained by adding it to the cotton sample length compensation value y.