Auto Distinction System And Auto Distinction Method

• US 20070286471A1
• Filed: 11/15/2005
• Published: 12/13/2007
• Est. Priority Date: 11/19/2004
• Status: Abandoned Application

• Current Assignee: Daicel Chemical Industries Limited (Daicel Corporation)
• Original Assignee: Daicel Chemical Industries Limited (Daicel Corporation)
• Inventors: Takebe, Masaki, Kaneda, Hiroshi
• Application Number:
  US11/667,625
• Publication Number:
  US 20070286471A1
• Time in Patent Office: Days
• US Class Current: 382/141
• CPC Class Codes: D01G 31/006 On-line measurement and recording of process and product parameters
• CPC Class Codes: G01B 11/024 by means of diode-array scanning
• CPC Class Codes: G01N 21/892 characterised by the flaw, defect or object feature examined
• CPC Class Codes: G01N 21/898 Irregularities in textured or patterned surfaces, e.g. textiles, wood

Abstract

The present invention provides an auto distinction system and an auto distinction method with which suitability of a width, a thickness, and a stain of a continuously moving assembled fiber band can be accurately distinguished. An assembled fiber band such as a filter tow which continuously moves on the front side of a background plate is imaged by a line sensor. Based on the produced video signal, a characteristic information containing a defect information concerning a thickness, a width, and a stain of the assembled fiber band is detected, and the defect information is extracted from the characteristic information. Thus suitability of the assembled fiber band is distinguished. For example, the video signal is supplied to a noise-eliminating circuit 6a and a defect signal concerning the thickness of the assembled fiber band is extracted. Based on the extracted signal and a reference signal with respect to the information, suitability of the defect information is distinguished by a distinction circuit 7. When the results of distinction are defective, the results are announced by an annunciation circuit 8. The video signal may be clamped by a clamping circuit 5b, and based on the clamped video signal, the defect information of the assembled fiber band may be extracted. The characteristic information or the defect information may be supplied to an external computer and used for process control.

Claims

1. An auto distinction system which is transmittable to a computer a characteristic information containing a defect information concerning at least one characteristic selected from the group consisting of a width, a thickness, and a stain of a continuously moving assembled fiber band as a time sequence or time-series fluctuation information, and which comprises

a line sensor for imaging the continuously moving assembled fiber band,

an extracting means for extracting the defect information from the characteristic information based on a video signal from the line sensor, and

a distinction means for distinguishing suitability of the characteristic or extracted information based on an extracted signal from the extracting means and a reference signal with respect to the characteristic or defect information.

2. An auto distinction system according to claim 1, comprising

a means for clamping the video signal from the line sensor, and

an extracting means for extracting the defect information concerning at least one characteristic selected from the group consisting of a width, a thickness, and a stain of the assembled fiber band based on a clamped video signal from the clamping means.

3. An auto distinction system according to claim 1, which has no central processing unit containing a memory for storing a digitized clamped video signal, and which is transmittable to the computer at least one characteristic information selected from the group consisting of a clamped video signal with respect to the thickness, a count data with respect to the width, and a count data with respect to the stain.

4. An auto distinction system according to claim 1, further comprising a transmitting means for supplying to a process control computer at least one characteristic information selected from the group consisting of a count data with respect to the width, a video signal with respect to the thickness, and a count data with respect to the stain.

5. An auto distinction system according to claim 4, wherein the transmitting means comprises

an interface means for transmitting or transferring to the computer at least one characteristic information selected from the group consisting of the count data with respect to the width, the video signal with respect to the thickness, and the count data with respect to the stain, and

a trigger means for generating a trigger signal to provide the transferring timing of the characteristic information to the computer via the interface means.

6. An auto distinction system according to claim 1, wherein the video signal, which may be clamped, contains a one-dimensional information corresponding to one scanning by the line sensor;

and each of the one-dimensional informations is dispersed or separated in the form of a time-series fluctuation information, and forms no image information of a two-dimensional area of the assembled fiber band scanned by the line sensor.

7. An auto distinction system according to claim 1, wherein the video signal from the line sensor is a luminance signal.

8. An auto distinction system according to claim 1, comprising

an extracting means for extracting a low frequency signal of the video signal which may be clamped, and

a distinction means for distinguishing suitability of the thickness by comparing the low frequency signal with reference values with respect to the lower limit and the upper limit of the thickness.

9. An auto distinction system according to claim 1, comprising

an extracting means for eliminating a video signal with respect to the thickness by at least a noise elimination means, and

a distinction means for distinguishing suitability of the thickness by comparing the video signal with respect to the thickness with reference values with respect to the lower limit and the upper limit of the thickness.

10. An auto distinction system according to claim 9, wherein the noise elimination means is a means for eliminating high frequency noise.

11. An auto distinction system according to claim 1, wherein the assembled fiber band comprises a plurality of yarns which are bundled and adjacently arrayed each other, or a tow band in which yarns are adjacently arrayed each other and overlapped to form a plurality of layers.

12. An auto distinction system according to claim 1, further comprising

an illuminating means which is disposed outside of a visual field of the line sensor and illuminates the assembled fiber band, and

a background plate for forming the background against the assembled fiber band relative to the illuminating means.

13. An auto distinction system according to claim 12, wherein the background plate has a high contrast color to the color of the assembled fiber band, and the extracting means extracts the defect information with respect to at least one characteristic selected from the group consisting of the width and the thickness of the assembled fiber band by using a video signal corresponding to the high contrast color region.

14. An auto distinction system according to claim 12, wherein the background plate has a color being similar or low-contrast against the color of the assembled fiber band, and the extracting means extracts the defect information with respect to at least one characteristic selected from the group consisting of the stain and the thickness of the assembled fiber band by using a video signal corresponding to the similar color region.

15. An auto distinction system according to claim 1, wherein the assembled fiber band is a filter tow, and the extracting means extracts a defect information with respect to the width and the stain of the assembled fiber band, or a defect information with respect to the thickness and the stain of the assembled fiber band.

16. An auto distinction system according to claim 1, comprising

(a-1) an extracting means for extracting a thickness defect signal from the video signal, and (a-2) a thickness distinction means for distinguishing suitability of the thickness by comparing the extracted defect signal with a reference value with respect to the thickness of the assembled fiber band;

(b-1) an extracting means for extracting a width signal from the video signal, and (b-2) a width distinction means for distinguishing suitability of the width by comparing the extracted width signal with a reference value with respect to the width of the assembled fiber band; and

(c-1) an extracting means for extracting a stain signal from the video signal, and (c-2) a stain distinction means for distinguishing acceptability of the stain by comparing the extracted stain signal with a reference value with respect to the stain of the assembled fiber band.

17. An auto distinction system according to claim 1, comprising

a sync-clamping signal generating means for generating a sync-clamping signal based on a synchronizing signal from the line sensor or a synchronizing signal generating circuit;

a clamping means for clamping the video signal in response to the sync-clamping signal from the sync-clamping signal generating means;

(a-1) an extracting means for extracting a defect signal with respect to the thickness from the clamped video signal, and (a-2) a thickness distinction means for distinguishing suitability of the thickness by comparing the extracted defect signal with a reference value with respect to the thickness of the assembled fiber band;

(b-1) an extracting means for extracting a signal with respect to the width from the clamped video signal, and (b-2) a width distinction means for distinguishing suitability of the width by comparing the extracted width signal with a reference value with respect to the width of the assembled fiber band; and

(c-1) an extracting means for extracting a signal with respect to the stain from the clamped video signal, and (c-2) a stain distinction means for distinguishing acceptability of the stain by comparing the extracted stain signal with a reference value with respect to the stain of the assembled fiber band.

18. An auto distinction system according to claim 16, which comprises

(a-1) a thickness distinction means which eliminates at least high frequency noise from the video signal which may be clamped, detects or extracts a video signal with respect to the thickness, and distinguishes suitability of the thickness by comparing the detected or extracted video signal with a reference value with respect to the thickness of the assembled fiber band;

(b-1) an extracting means which eliminates noise from the video signal which may be clamped, and generates a rectangular signal corresponding to the width of the assembled fiber band, (b-2) a counter means for counting rectangular portions of the video signal by a clock means, and (b-3) a width distinction means for distinguishing suitability of the width by comparing the count data of the counter means with a reference value with respect to the width of the assembled fiber band; and

(c-1) a differentiation means for differentiating the video signal which may be clamped, (c-2) a comparing means for distinguishing a stain by comparing the differentiated video signal from the differentiation means with a reference value with respect to the stain of the assembled fiber band, and (c-3) a counter means for counting the number of stains on the basis of a defect information and an image-width information, in which the defect information relates to the stain from the comparing means and the image-width information relates to the image width from the line sensor, and (c-4) a stain distinction means for distinguishing acceptability of the stain by comparing the count data counted by the counter means with a reference value with respect to the stain of the assembled fiber band.

19. An auto distinction system according to claim 18, wherein the comparing means comprises a first comparing means for distinguishing a larger stain of the assembled fiber band by comparing the differentiated video signal with a first reference value with respect to stain largeness, and a second comparing means for distinguishing a smaller stain of the assembled fiber band by comparing the differentiated video signal with a second reference value with respect to stain smallness;

the counter means comprises a first counter means for counting the number of large stains on the basis of both the defect information with respect to the stain from the first comparing means and the image-width information from the line sensor, and a second counter means for counting the number of small stains on the basis of both the defect information with respect to the stain from the second comparing means and the image-width information from the line sensor; and

the stain distinction means distinguishes acceptability of the stain by comparing the count data counted by the first counter means with a reference value with respect to large stain of the assembled fiber band.

20. An auto distinction system according to claim 1, wherein the extracting means extracts the defect information with respect to at least one characteristic selected from the group consisting of a width, a thickness, and a stain of a crimped or non-crimped band-shaped filter tow which continuously moves and comprises a plurality of yarns.

21. An auto distinction method which is transmittable to a computer a characteristic information containing a defect information concerning at least one characteristic selected from the group consisting of a width, a thickness, and a stain of a continuously moving assembled fiber band as a time sequence or time-series fluctuation information, and which comprises

imaging a continuously moving assembled fiber band by a line sensor,

extracting the detect information from the characteristic information based on a video signal from the line sensor, and

distinguishing suitability of the defect information based on the extracted signal and a reference signal with respect to the characteristic or defect information.

22. An auto distinction method according to claim 21, wherein the video signal from the line sensor is clamped based on a sync-clamping signal generated from a synchronizing signal, and the defect information concerning at least one characteristic selected from the group consisting of a width, a thickness, and a stain of the assembled fiber band is extracted based on the clamped video signal.

23. An auto distinction method according to claim 21, wherein the video signal, which may be clamped, contains a one-dimensional information corresponding to one scanning by the line sensor;

and each of the one-dimensional informations is dispersed or separated in the form of a time-series fluctuation information, and forms no image information of a two-dimensional area of the assembled fiber band scanned by the line sensor.