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Method and device for online detection of foreign fiber in cotton

A foreign fiber and cotton technology, applied in the field of cotton foreign fiber online detection and device, can solve the problem that the foreign fiber removal rate and the noil rate index are difficult to be guaranteed, the detection effect of the same color foreign fiber is difficult to be guaranteed, and it is not enough to suppress the CCD camera. The noise floor and other problems can be improved to improve the foreign fiber removal rate, improve the foreign fiber detection rate, and facilitate the promotion and application.

Inactive Publication Date: 2010-01-20
SHANGHAI ZHONGFANG BAODA TEXTILE INTELLIGENT INSTR +2
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, none of the above patents mentions the speed monitoring of the inspected object, so it is difficult to guarantee the foreign fiber removal rate and noil rate indicators.
[0005] 3. Use UV-enhanced silicon photodiode to detect the ultraviolet light reflected by the foreign fiber of the same color as the cotton fiber. Due to the influence of factors such as the intensity of the ultraviolet light source and the angle of the ultraviolet light reflected back from the surface of the moving foreign fiber, etc. , therefore, the detection effect on the same color foreign fiber will be difficult to be guaranteed
[0006] 4. There is always background noise in the electronic system, also known as background noise. When the strength of the useful signal is lower than the background noise in the system, it will be obliterated and cannot be detected
However, if the intensity of the supplementary light source is too strong, the proportion of useful fluorescent signal will decrease, and if it is too weak, it will not be enough to suppress the noise floor of the CCD camera
Moreover, the noise floor of the CCD camera will change over time, and it will be difficult for the fixed combination of the two lamps to adapt to this change.

Method used

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  • Method and device for online detection of foreign fiber in cotton
  • Method and device for online detection of foreign fiber in cotton
  • Method and device for online detection of foreign fiber in cotton

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Embodiment Construction

[0039] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0040] see figure 1 , figure 2 with image 3 , said a cotton foreign fiber online detection device consists of cotton opener 1, channel 2, window 3, CCD camera 4, lighting source 5, background plate 6, nozzle array 7, foreign fiber channel 8, foreign fiber collecting unit 9. Computer 10, electrical box 11, operation button 12, frequency conversion fan 13, and cotton delivery pipe 14.

[0041] The two CCD cameras 4 are symmetrically distributed on both sides of the channel 2, and their centers are located on the same horizontal plane; the optical axes of the two CCD cameras 4 are inclined at an angle to the inner and lower sides, and intersect at the channel 2 after passing through the window 3 A certain point O on the center line of , and project on the background plate 6 through the window on the other side.

[0042] Said window 3, when using a 350...

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Abstract

The invention provides a method and a device for online detection of foreign fiber in cotton. The device comprises a cotton opener, channels, windows, a CCD (Charge Coupled Device) camera, an illumination light source, a background plate, a nozzle array, a foreign fiber channel, a foreign fiber collecting unit, a computer, an electrical equipment cabinet, operating buttons, a frequency conversionfan and a cotton conveyance pipe. The method comprises the following steps: opening lint cotton; feeding the lint cotton into the detection area of the CCD camera through the channels; performing theillumination and CCD camera sampling in three steps, and further collecting the detection results of the three steps for identifying the foreign fiber; calculating the time for nozzles in the corresponding positions to the foreign fiber to open and close by combining the action delay time of each nozzle; controlling the corresponding nozzles to operate, so as to remove the foreign fiber; and meanwhile, outputting clean cotton with the foreign fiber being removed from the clean cotton output channel, wherein, by combining the performance parameters of the CCD camera, the cotton flow rate in the corresponding area of each nozzle can be calculated from the data obtained through infrared LED illumination and sampling, and the average cotton flow rate can be further calculated; and then, the cotton flow rate in the channels can be stabilized within a per-determined range by controlling the frequency conversion fan.

Description

Technical field: [0001] The invention relates to visible light color detection technology, ultraviolet light excitation fluorescence detection technology, infrared light absorption detection technology, signal processing technology, and speed measurement technology, especially a method and device for online detection of foreign fiber in cotton. Background technique: [0002] In the textile industry, if cotton is mixed with foreign fibers that are very similar in appearance to cotton fibers, such as plastic films, chemical fibers, hair and other impurities, it will lead to increased defects in the fabric, uneven dyeing and other defective products in the subsequent weaving process causing losses. In recent years, this has become a major public hazard in the textile industry at home and abroad. If manual sorting is used to remove foreign fibers, the effect of manual removal cannot be guaranteed because the shape, color and appearance of foreign fibers are very similar to cott...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01G9/12D01G9/08D06H3/08G01N21/89
Inventor 孔繁金裘诚
Owner SHANGHAI ZHONGFANG BAODA TEXTILE INTELLIGENT INSTR
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