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Method for monitoring yarn quality in an optical detector of yarn quality and optical detector for performing the method

A technology for optical detectors and yarn quality, applied in the direction of material analysis through optical means, scientific instruments, optical devices, etc., can solve the problems of different sensitivity of individual optical components, etc.

Active Publication Date: 2020-09-04
RIETER CZ AS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] A disadvantage of the above solution is the fact that individual optical elements may differ in sensitivity and may generate different analog values ​​for falling light of the same energy

Method used

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  • Method for monitoring yarn quality in an optical detector of yarn quality and optical detector for performing the method
  • Method for monitoring yarn quality in an optical detector of yarn quality and optical detector for performing the method
  • Method for monitoring yarn quality in an optical detector of yarn quality and optical detector for performing the method

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Embodiment Construction

[0023] figure 2 Unsaturated and fully irradiated optics are shown, where the black color corresponds to the amount of energy falling on the optic. Due to the fact that it is an optical element with an analog output, this optical element must not saturate even during the maximum illuminance of the radiation source. M is the maximum value of the analog signal that can be provided by the optical element at its output if the optical element is illuminated with such intense light that it will be in so-called saturation. Fv is the resulting value of the simulated signal provided by an individual fully irradiated optical element not shaded by the yarn. The figure on the right shows the same optic partially obscured by yarn, where Fp is the output value of the analog signal during partial shading by the yarn. The energy loss caused by the partial shading of the optical element by the yarn is determined by the difference Fv - Fp.

[0024] However, it must be taken into account t...

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Abstract

The invention relates to a method for monitoring yarn quality in an optical detector of yarn quality by means of a linear optical sensor comprising one or two rows of individual rectangular shaped optical elements at their output Provides an analog signal proportional to the irradiance of the optic. The analog signals of all individual optical elements irradiated and not shaded by the yarn in all operating modes of the optical detector of the mass are sensed for each individual optical element and stored in electronic memory according to predefined criteria as Initial, operating or working values ​​(Fc1, Fc2, Fc3) of individual optical elements, which are then compared with each other for the purpose of evaluating the correct function of the sensor and eliminating manufacturing and operating defects and failures. The invention also relates to an optical detector for carrying out the method described above.

Description

technical field [0001] The invention relates to a method for monitoring yarn quality in an optical detector of yarn quality by means of a linear optical sensor comprising one or two rows of individual rectangular-shaped optical elements whose output An analog signal proportional to the irradiance of the optical element is provided at the end. [0002] The invention also relates to an optical detector for carrying out the method according to the invention, comprising a sensor with a plurality of optical elements arranged next to each other in one or two rows, for the The image of the yarn is projected vertically onto the individual optical elements of the sensor to monitor the parameters of the moving yarn on the textile machine. Background technique [0003] Optical detectors of the yarn quality are used on textile machines during the production of the yarn, and in principle it is not possible to protect them from contamination by dust or yarn residues, and it is therefore ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01H13/32D01H1/16G01B11/10
CPCD01H13/165D01H13/32G01B11/105G01N21/8903G01N21/8915G01N33/365D01H13/22
Inventor P.考萨里克Z.伯兰
Owner RIETER CZ AS
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