Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

The acquisition method of linear density coefficient curve and standard whisker cluster curve

An acquisition method and technology of density coefficient, applied in the field of acquisition of online density coefficient curve, can solve problems such as influence of calculation accuracy, inapplicability, lack of hair curl correction coefficient, etc., and achieve the effect of overcoming calculation deviation and eliminating the greater position deviation

Active Publication Date: 2019-04-09
DONGHUA UNIV
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the early calculation method of whisker density curve (Wang Fumei, Wu Hongyan. Method for obtaining whisker curve ZL2012 1 010328089.5) was calculated by Lambert-Beer optical theory and then corrected according to the experimental results of cotton fiber. Other fibers present obvious inapplicability
In addition, in the application, it was found that the following incomplete problems still existed in the early inventions: (1) lack of an accurate determination method for the starting line position of the whiskers
(2) There are random fluctuations in the measurement of the linear density at the starting position of the whiskers or the maximum linear density required when calculating the relative linear density curve of the whiskers, which has a significant impact on the calculation accuracy
(3) Lack of curl correction factor for wool tufts

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • The acquisition method of linear density coefficient curve and standard whisker cluster curve
  • The acquisition method of linear density coefficient curve and standard whisker cluster curve
  • The acquisition method of linear density coefficient curve and standard whisker cluster curve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0093] Utilize the inventive method to make 2 double-ended random whiskers of 1# tops, the clamp width is 10mm, measure the light-transmitting image of each whiskers, the incident spectrum intensity is evenly distributed in the visible light range, after testing at the average wavelength of the incident light Lower Wool Fiber R ∞ = 0.853. Then, using the method of the present invention to calculate the whisker curves of these two double-ended random whiskers, a=0.96, b=1.05. On the other hand, the length distribution of the wool top was tested by the Almeter instrument, which is an international standard method, and the whisker curve was converted from the Almeter data using the quadratic integral theoretical relationship deduced by Wu Hongyan. Comparison of two whisker cluster curves Figure 5 As shown, the random whisker image method among the figures represents the method of the present invention, obviously the whisker curve obtained based on the method of the present inv...

Embodiment 2

[0095] Utilize the inventive method to make double-ended random whiskers of 2#~7# wool tops, the clamp width is 15mm, each kind of wool top makes 2 double-ended random whiskers, measures the light-transmitting image of each whiskers, and the incident light curve With embodiment 1. Then, utilize the method of the present invention to calculate the whisker curve of each sample, R ∞ , a and b are with embodiment 1. On the other hand, the length distributions of 2# to 7# tops were tested by the international standard method Almeter instrument, and the whisker curves of each top were converted from the Almeter data by the method described in Example 1. Comparison of two kinds of whisker curves of the same wool top Figure 6 ~ Figure 11 Shown, among the figure random whisker image method represents the method of the present invention. Figure 6 ~ Figure 11 All show that the whisker cluster curve obtained based on the method of the present invention is highly consistent with the w...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

According to the technical schemes, the invention provides an acquisition method of a linear density coefficient curve, a positioning method of a double-end tuft center line and an acquisition method of a standard tuft curve. The methods have the advantages that a calculation deviation of a Lambert-Beer optical algorithm is eliminated, and the problem that in existing optical measurement, the deviation of the position where the fiber density is higher is larger is solved; by means of the novel sampling, image measurement and signal analysis method, the problems that noise is generated in measurement signals, and a tuft start line is difficult to recognize can be avoided, the accurate position of the tuft start line and accurate information of the highest linear density are obtained, and the complete and accurate tuft curve and linear density curve are calculated.

Description

technical field [0001] The invention relates to a method for obtaining a linear density coefficient curve and a method for obtaining a standard whisker curve based on the method for obtaining the linear density coefficient curve. Background technique [0002] A large-capacity measuring instrument for fiber length usually uses a photoelectric or capacitive sensor to measure the linear density curve of the whiskers, that is, the relationship curve between the cross-sectional position of the whiskers and the amount of fibers, referred to as the whiskers curve; then, according to the fiber length distribution and The mathematical relationship between the whisker-plexus curves calculates the length distribution curves and characteristic indices of the fibers. Therefore, accurate measurement of the linear density curve of whiskers is the basis and premise of accurate analysis of the length-frequency distribution curve and characteristic indicators. [0003] When measuring the mas...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N9/24
CPCG01N9/24
Inventor 王府梅陈丽君吴美琴赵林
Owner DONGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com