CN105951415B - A kind of light color or transparent foreign fiber detection system - Google Patents
A kind of light color or transparent foreign fiber detection system Download PDFInfo
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- CN105951415B CN105951415B CN201610579535.8A CN201610579535A CN105951415B CN 105951415 B CN105951415 B CN 105951415B CN 201610579535 A CN201610579535 A CN 201610579535A CN 105951415 B CN105951415 B CN 105951415B
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H3/00—Inspecting textile materials
- D06H3/08—Inspecting textile materials by photo-electric or television means
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Abstract
The present invention provides a kind of light color or transparent foreign fiber detection system, and this system includes lighting device and image collecting device, and image collecting device includes line-scan digital camera camera lens, line-scan digital camera and filtering assembly again.Lighting device in this system provided for raw material flow include cotton and foreign fiber characteristic wave bands incident light；Filtering assembly can be through cotton or the light of foreign fiber characteristic wave bands；Line-scan digital camera receives the light after filtering assembly filters and imaging.Since cotton is different with the spectral absorption characteristics of foreign fiber, lead to the gray scale difference of cotton and foreign fiber in raw material stream picture, therefore, the present invention detects the foreign fiber in raw material flow by the gray difference of raw material stream picture different material.Compared with the detection device based on cotton and foreign fiber color distinction, this system has better detection effect to light color or transparent foreign fiber.In addition, this system structure is relatively simple, compact, convenient for assembling and use, and be suitble to be installed on other color-selection apparatus.
Description
Technical field
The present invention relates to detection field more particularly to a kind of light color or transparent foreign fiber detection systems.
Background technique
In the picking, storage and acquisition process of raw cotton, it is easy to be mixed into foreign fiber (non-cotton fiber), foreign fiber
It is commonly called as " three " in the textile industry, mainly includes polypropylene fiber silk, woven bag, the piece of sack, the colored leftover of bolt of cloth and hair etc..According to face
Color difference is other, and foreign fiber can be classified as two categories again: first kind foreign fiber is mostly color, contrast and structure etc. and cotton
The flower biggish foreign fiber of difference；Second class foreign fiber mostly is difficult to distinguish with cotton from color light or transparent
Foreign fiber, chemical component are usually polypropylene or polyethylene.Foreign fiber is easily broken or is divided into more in spinning process
Short, thinner fiber, or it is broken into the tiny fault of threadiness.These faults easily cause spinning end breaking, reduce adding for gauze
Work and production efficiency.In addition, foreign fiber various color dots can occur in cloth cover after woven fabric dyeing, the outer of cloth cover is seriously affected
Appearance quality brings about great losses to cotton spinning enterprise.Currently, generally comprised scutching cotton process in textile technology, scutching cotton process can be with
Most of impurity in raw cotton is removed, but is difficult to thoroughly remove the foreign fiber in raw cotton.And manually pick foreign fiber
Traditional approach is not only time-consuming and laborious, low efficiency and cleaning effect are unsatisfactory, and part foreign fiber is still remained in raw cotton.Cause
How this, effectively detect that remaining foreign fiber is the task of top priority for reducing cotton spinning enterprise associated loss in raw cotton.Currently, cotton
It spins enterprise and mostly uses detection device to detect the foreign fiber in raw cotton material stream (raw material flow).
Detection device usually waits for that checking device matches with raw cotton, the common detection for completing foreign fiber.Fig. 1 is please referred to, to
Checking device generally includes raw material flow chute 1 and the detection window 2 for being set to raw material flow chute sides.Raw material flow can be with certain
Speed moves in raw material flow chute 1, and detection device can then detect the foreign fiber in raw material flow by detection window 2.
Currently, first kind foreign fiber can be carried out effectively by CCD (Charge-coupled Device, charge coupled cell) camera
Identification；Compared with first kind foreign fiber, the detection difficulty of the second class foreign fiber is larger, the required precision to detection device
It is higher.Currently, the second class foreign fiber mainly uses line array CCD colour TV camera to be detected, part detection device is also used
Photoelectric sensor and ultrasonic detection technology.Wherein, line array CCD colour TV camera passes through acquisition raw material stream picture, and to image
Color difference analysis is carried out to detect the foreign fiber in raw material flow；Photoelectric sense technology can pass through the variation of photoelectric tube current signal
The color difference of foreign fiber and cotton is reacted, current signal is amplified, handles and compare, and finally may recognize that the opposite sex in raw material flow is fine
Dimension；Ultrasonic detection technology is based primarily upon ultrasonic wave and keeps straight line to advance in the material, and in the intersection of two kinds of different materials
The principle that can be reflected detects the foreign fiber in raw material flow.
However, be difficult to distinguish from color with cotton due to the property that the second class foreign fiber has color shallow, because
This, line array CCD colour TV camera and photoelectric sensor are unsatisfactory for the detection effect of the second class foreign fiber.In addition,
Since the transmission speed of ultrasonic wave does not have that light wave is fast, thus it is relatively slow to the identification of foreign fiber reflection speed, when anisotropic fine
When the movement velocity of dimension is very fast, it is more likely that have little time to identify, therefore, the effect of ultrasonic detection technology is also not ideal enough.
Summary of the invention
The present invention provides a kind of light color or transparent foreign fiber detection system, light or transparent different in the prior art to solve
The technical problem of property fiber detection device detection effect difference.
The present invention provides a kind of light color or transparent foreign fiber detection system, and the system comprises lighting devices and image to adopt
Acquisition means, the lighting device are set between described image acquisition device and raw material flow chute, for in raw material flow chute
Raw material flow provide include cotton and foreign fiber characteristic wave bands incident light, and the vertical height of the lighting device is higher than
The upper surface of detection window or lower end surface lower than the detection window；
Described image acquisition device further includes line-scan digital camera camera lens, for receiving the light through the line-scan digital camera camera lens
And the line-scan digital camera being imaged and the filtering assembly that is set between the line-scan digital camera camera lens and the line-scan digital camera, wherein
The line-scan digital camera camera lens is towards the detection window, and the optical axis of the line-scan digital camera camera lens and the detection window
The center line of mouth is overlapped；The filtering assembly is cotton or the characteristic wave bands of foreign fiber through wave band.
Preferably, the system also includes spectrum groupware, the spectrum groupware is set to the line-scan digital camera camera lens and institute
It states between filtering assembly.
Preferably, the spectrum groupware is plane spectroscope, and the line-scan digital camera includes being located at the plane
Second line-scan digital camera of the first line-scan digital camera peace face type spectroscope reflected light path of spectroscope transmitted light path.
Preferably, the angle between the plane spectroscope and the line-scan digital camera camera lens optical axis is 45 °.
Preferably, the filtering assembly includes the first filtering assembly and the second filtering assembly, and first filtering assembly is set
It is placed between the spectrum groupware and first line-scan digital camera, second filtering assembly is set to the spectrum groupware and institute
It states between the second line-scan digital camera.
Preferably, first filtering assembly is 1150-1250nm, 1700-1800nm or 2300- through wave band
2400nm, second filtering assembly is 1475-1575nm, 1880-1980nm or 2070-2170nm through wave band.
Preferably, the lighting device includes hollow illumination body and the light source that is set to inside the illumination body
Component, the illumination body side is additionally provided with opening, described to be open towards the detection window.
Preferably, the lighting device further includes light barrier, and the light barrier is covered in the light source assembly described in
On the side of opening.
Preferably, the light source assembly is evenly distributed multiple halogen lamp.
Preferably, the lighting device is laser line light source.
The technical solution that the embodiment of the present invention provides can include the following benefits:
Compound is usually made of multiple groups, and different groups have different direction of vibration and vibration frequency.Work as irradiation
When the incident light frequency on compound surface is consistent with the vibration frequency of a certain group of compound, incident light then can apparent quilt
Respective compound is absorbed.By the length scanning in full spectral region, the feature of available characterization of compound absorption characteristic
Wave band.Detection system provided by the invention includes lighting device and image collecting device, and lighting device provides for raw material flow includes
There is the incident light of cotton and foreign fiber characteristic wave bands, incident light is radiated on raw material flow surface by detection window, is included in
The characteristic wave bands of cotton and foreign fiber in incident light will be absorbed by cotton and foreign fiber respectively, the incidence of remaining wave band
Light enters in line-scan digital camera camera lens after raw material flow reflects, then after the filter action of filtering assembly, through the wave of filtering assembly
Section is only the characteristic wave bands of cotton or foreign fiber, and line-scan digital camera receives the light after filtering assembly filters and imaging.By above
For workflow as it can be seen that if doped with foreign fiber in raw material flow, foreign fiber will absorb characteristic wave bands corresponding with itself, and
Do not absorb or it is less absorb cotton characteristic wave bands, therefore, when line-scan digital camera to filtering assembly filter after image formation by rays when, nothing
The characteristic wave bands of cotton or the characteristic wave bands of foreign fiber by the light that filtering assembly penetrates, in raw material stream picture cotton and
There is difference in the gray scale of foreign fiber, to detect the foreign fiber in raw material flow by the above gray scale difference.Be based on cotton
Flower is compared with the detection device of foreign fiber color distinction, and this system passes through cotton and the unique spectral absorption characteristics of foreign fiber
The foreign fiber in raw material flow is detected, there is better detection effect to light color or transparent foreign fiber.In addition, this system structure
It is relatively simple, compact, it convenient for assembling and uses, and be suitble to be installed on other color-selection apparatus.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
Fig. 1 is the structural schematic diagram to checking device provided in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of a kind of light color provided in the embodiment of the present invention or transparent foreign fiber detection system；
Fig. 3 is a kind of structural schematic diagram of the lighting device provided in the embodiment of the present invention；
Fig. 4 is the structural representation of the another kind light color provided in the embodiment of the present invention or transparent foreign fiber detection system
Figure；
Fig. 5 is the structural representation of the third light color provided in the embodiment of the present invention or transparent foreign fiber detection system
Figure；
Fig. 6 is the structural representation of the 4th kind of light color provided in the embodiment of the present invention or transparent foreign fiber detection system
Figure；
Symbol indicates:
1- raw material flow chute, 2- detection window, 3- lighting device, 4- image collecting device, 31- illumination body, 32- light source
Component, 33- opening, 34- light barrier, 41- line-scan digital camera camera lens, 42- line-scan digital camera, 43- filtering assembly, 44- spectrum groupware,
The first line-scan digital camera of 421-, the second line-scan digital camera of 422-, the first filtering assembly of 431-, the second filtering assembly of 432-.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistented with the present invention.On the contrary, they be only with it is such as appended
The example of device being described in detail in claims, some aspects of the invention are consistent.
All the embodiments in this specification are described in a progressive manner, same and similar portion between each embodiment
Dividing may refer to each other, and the highlights of each of the examples are differences from other embodiments.
Referring to FIG. 2, showing a kind of light color or transparent foreign fiber detection system provided in the embodiment of the present invention
Structural schematic diagram.
From Figure 2 it can be seen that including lighting device 3 and figure in light color provided in this embodiment or transparent foreign fiber detection system
As acquisition device 4, the lighting device 3 is set between described image acquisition device 4 and raw material flow chute 1, for being raw material
Raw material flow offer in stream chute 1 includes the incident light of cotton and foreign fiber characteristic wave bands, and the lighting device 3 is vertical
Straight height is higher than the upper surface of detection window 2 or the lower end surface lower than the detection window 2.
The main component of cotton is cotton fiber, and the main component of foreign fiber is polyethylene and polypropylene.
Wherein, the structural formula of cotton fiber are as follows:
The structural formula of polyethylene are as follows:
Polyacrylic structural formula are as follows:
By the above cotton fiber, polyethylene and polyacrylic structural formula as it can be seen that group in cotton fiber, polyethylene and polypropylene
Type is different, and not isoplastic direction of vibration and vibration frequency are also different.When the incident light frequency being radiated on raw material flow surface
When consistent with the vibration frequency of group a certain in cotton fiber or foreign fiber, then incident light can obviously be absorbed, and be caused by inhaling
The reflected light of receipts significantly reduces, in reflected light only comprising sub-fraction it is corresponding with cotton fiber or foreign fiber characteristic wave bands enter
Penetrate light.
By the length scanning in full spectral region, the feature of available characterization cotton fiber and foreign fiber absorption characteristic
Wave band, wherein the characteristic wave bands of cotton fiber mainly include 1475-1575nm, 1880-1980nm and 2070-2170nm, anisotropic fibre
The characteristic wave bands of dimension mainly include 1150-1250nm, 1700-1800nm and 2300-2400nm.Certainly, above band is only cotton
A part in fiber or foreign fiber characteristic wave bands, other can characterize the wave band of cotton fiber and foreign fiber absorption characteristic
It can be the characteristic wave bands of the two.
In the present embodiment, lighting device 3 is diffusing reflection cylinder, and diffusing reflection cylinder can be provided by detection window 2 for raw material flow
Include the incident light of cotton and foreign fiber characteristic wave bands, so as to when in raw material flow mix foreign fiber when, with foreign fiber
The corresponding portion of incident light of characteristic wave bands can effectively be absorbed by foreign fiber.
Diffusing reflection cylinder is set between described image acquisition device 4 and raw material flow chute 1, and the vertical height of diffusing reflection cylinder
Higher than the upper surface of detection window 2 or lower than the lower end surface of the detection window 2, that is to say, that diffusing reflection cylinder is for raw material flow
While incident light is provided, acquisition of the image collecting device 4 to raw material flow reflected light cannot be hindered.
Further, since window 2 is irradiated to raw material flow surface, raw material flow to the incident light needs of diffusing reflection cylinder raising after testing
Reflected light window 2 reaches image collecting device 4 after testing again, therefore, detection window 2 needs fine to cotton fiber and the opposite sex
The characteristic wave bands of dimension have preferable transmitance, and material can be quartz glass or the preferable material of other transmittances.
In addition, it is generally the case that the degree of scatter of raw material flow is higher, and therefore, the raw cotton and foreign fiber in raw material flow are equal
It is relatively thin, cause the color of background material in detection window 2, composition that can produce bigger effect to the detection accuracy of foreign fiber.
In the present embodiment, background material can select polytetrafluoroethylene (PTFE), and the color of polytetrafluoroethylene (PTFE) is close with cotton, and polytetrafluoroethylene (PTFE)
Characteristic wave bands it is also close compared with cotton fiber, thus when using background material of the polytetrafluoroethylene (PTFE) as detection window 2, to different
Property fiber detection influence it is smaller.
In the present embodiment, described image acquisition device 4 further includes line-scan digital camera camera lens 41, for receiving through the linear array
The light of camera lens 41 and the line-scan digital camera 42 being imaged and it is set to the line-scan digital camera camera lens 41 and the line-scan digital camera
Filtering assembly 43 between 42.
Line-scan digital camera 42 in the present embodiment has higher resolution ratio compared with general camera, is suitble to quick movement
Raw material flow carry out branch's scanning and acquiring image.Since the characteristic wave bands multidigit of cotton fiber and foreign fiber is in near-infrared wave
Section, therefore, line-scan digital camera 42 is near infrared ray array camera, line-scan digital camera corresponding with infrared line-scan digital camera in the present embodiment
Camera lens 41 is near infrared ray array camera camera lens.
In the present embodiment, line-scan digital camera camera lens 41 is towards the detection window 2, and the optical axis of the line-scan digital camera camera lens 41
It is overlapped with the center line of the detection window 2.Since line-scan digital camera camera lens 41 is towards detection window 2, thus, the reflection of raw material flow
Light can be by detection window 2, into line-scan digital camera camera lens 41.Simultaneously as 41 face detection window 2 of line-scan digital camera camera lens
Center, thus, positioned at 2 center line two sides of detection window raw material flow reflected light can it is symmetrical, uniformly enter camera lens 41
It is interior, be conducive to line-scan digital camera 42 to the precise acquisition of raw material stream picture, thus improve the present embodiment detected by image grayscale it is different
The accuracy of property fiber.
In the present embodiment, filtering assembly 43 is 1700-1800nm through wave band, and 1700-1800nm is foreign fiber
Characteristic wave bands, i.e. foreign fiber have apparent absorption peak in 1700-1800nm wavelength band.When incident light is irradiated to raw material
When foreign fiber in stream, the light of most of 1700-1800nm wave band can be absorbed by foreign fiber, remaining wave band in incident light
Light enters in line-scan digital camera camera lens 41 after raw material flow reflects, then the filter action through filtering assembly 43, finally enters linear array phase
Machine 42 is only the light of 1700-1800nm wave band.At this point, since light of the foreign fiber to 1700-1800nm wave band has significantly
It absorbs, and cotton fiber absorbs the light of fraction 1700-1800nm wave band, therefore, in the raw material stream picture that line-scan digital camera 42 obtains,
Image grayscale at foreign fiber is larger, and color is darker, and the image grayscale at cotton fiber is smaller, and color is brighter.Therefore, pass through original
The difference of gray scale in stream image can effectively detect the foreign fiber in raw material flow.
Referring to FIG. 3, showing a kind of structural schematic diagram of the lighting device provided in the embodiment of the present invention.
As seen from Figure 3, diffusing reflection cylinder includes hollow illumination body 31 and the light source that is set to inside illumination body 31
Component 32,31 side of illumination body are additionally provided with opening 33, and the opening 33 is towards the detection window 2.
In the present embodiment, the light that light source assembly 32 emits can be irradiated on detection window 2, Jin Erzhao by opening 33
It is mapped in raw material flow, provides required incident light for raw material flow.Light source assembly 32 is evenly distributed multiple halogen lamp, and halogen lamp is
All band light source includes near infrared band, thus can provide for raw material flow includes cotton and foreign fiber characteristic wave bands
Incident light.In addition, LED light has the advantages that small in size, the service life is long, calorific value is low etc., thus, in other embodiments of the present invention,
The LED light of light source assembly 32 or multiple infrared bands.
In other embodiments of the invention, the lighting device 3 further includes light barrier 34, and the light barrier 34 is covered in described
Light source assembly 32 towards it is described opening 33 side on.Light barrier 34 can be the material with diffuse reflection effect, light source assembly
The light of 32 transmittings scatters out again by the diffuse reflection effect of light barrier 34, the uniformity of incident light can be improved, to reduce
Influence of the extraneous factor to raw material flow image grayscale, and then the imaging effect and this system that improve line-scan digital camera 42 are to foreign fiber
Detection accuracy.In addition, the inner surface of illumination body 31 can also be coated with diffusing reflection coating, to further increase raw material inflow
Penetrate the uniformity of light.
Referring to FIG. 4, showing the another kind light color provided in the embodiment of the present invention or transparent foreign fiber detection system
Structural schematic diagram.From fig. 4, it can be seen that including two lighting devices 3 in detection system provided in this embodiment, it is located at detection
Above the upper surface of window 2 and below the lower end surface of detection window 2, two lighting devices 3 can be respectively from upper and lower both direction
Symmetrical illumination detection window 2 can be further improved the uniformity of raw material flow incident light, Jin Erti using two lighting devices 3
The accuracy that high this system detects foreign fiber.
In addition, lighting device 3 may be the laser of cotton or foreign fiber characteristic wave bands in other embodiments of the invention
Linear light source.Since laser line light source only emits the laser of cotton or foreign fiber characteristic wave bands, raw material flow incident light it is miscellaneous
Astigmatism is less, and hot spot consistency is preferable, is conducive to the imaging effect for improving line-scan digital camera 42.Likewise, system provided by the invention
It also may include the laser line light source of two different-wavebands in system, two laser line light sources symmetrically shine from upper and lower both direction respectively
Detection window 2 is penetrated, to improve the uniformity of raw material flow incident light.
Referring to FIG. 5, showing the third light color provided in the embodiment of the present invention or transparent foreign fiber detection system
Structural schematic diagram.
Cotton fiber or foreign fiber are not especially greatly, for example, cotton fiber pair for the extinction sex differernce of certain characteristic wave bands
It is more apparent in the luminous absorptance of 1475-1575nm wave band, but foreign fiber also has part for the light of 1475-1575nm wave band
It absorbs, at this point, only being then difficult to accurately distinguish raw cotton and foreign fiber by the gray difference of a raw material stream picture.Therefore, originally
Further include spectrum groupware 44 in invention some embodiments, the spectrum groupware 44 be set to the line-scan digital camera camera lens 41 with it is described
Between filtering assembly 43, the light in line-scan digital camera camera lens 41 can be divided by two-way or two-way or more by spectrum groupware 44
Light, each road light are imaged in different line-scan digital cameras, come eventually by the gray difference of more two or more raw material stream pictures
Detect foreign fiber.Spectrum groupware 44 can be semi-transparent semi-reflecting lens, or wavelength selective spectroscope is with certain wavelength
Boundary, the light greater than this wavelength penetrate, and the light less than this wavelength reflects.
In the present embodiment, spectrum groupware 44 is plane spectroscope, and light can be divided into two-way by plane spectroscope, with two
Road light is corresponding, and the line-scan digital camera 42 includes the first line-scan digital camera for being located at the plane spectroscope transmitted light path
421 and plane spectroscope reflected light path the second line-scan digital camera 422.The filtering assembly 43 includes the first filtering assembly 431
With the second filtering assembly 432, first filtering assembly 431 is set to the spectrum groupware 44 and first line-scan digital camera
Between 421, second filtering assembly 432 is set between the spectrum groupware 44 and second line-scan digital camera 422.
In the present embodiment, the first filtering assembly 431 through wave band be 1150-1250nm, the second filtering assembly 432 it is saturating
Crossing wave band is 1475-1575nm.Certainly, the first filtering assembly 431 and the second filtering assembly described in other embodiments of the invention
432 wave band that penetrates may be 1700-1800nm, 2300-2400nm, 1880-1980nm or 2070-2170nm.
After spectrum groupware 44 is divided, the image-forming principle of each optical path and the testing principle of foreign fiber and above embodiments phase
Seemingly.It is darker at foreign fiber in raw material stream picture under the wave band 1150-1250nm of first line-scan digital camera 421 acquisition, at raw cotton
It is brighter；Darker, foreign fiber at raw material stream picture Central Plains cotton under the wave band 1475-1575nm of second line-scan digital camera 422 acquisition
Place is bright compared at raw cotton.The gray difference of foreign fiber is obvious in above two images, thus, by under comparison different characteristic wave band
Raw material stream picture gray value, the foreign fiber in raw material flow can be more accurately detected out.
In addition, in certain embodiments of the present invention, the folder between 41 optical axis of plane spectroscope and line-scan digital camera camera lens
Angle is 45 °, so that the first line-scan digital camera 421 and the second line-scan digital camera 422 can vertically be put, consequently facilitating accurately adjusting two-phase
The field of view angle of machine.
Referring to FIG. 6, showing the 4th kind of light color provided in the embodiment of the present invention or transparent foreign fiber detection system
Structural schematic diagram.
As seen from Figure 6, in the present embodiment, spectrum groupware 44 is Mitsubishi's mirror, and light can be divided into three tunnels by Mitsubishi's mirror, with three tunnels
Light is corresponding, line-scan digital camera 42 include be respectively perpendicular to the plane spectroscope light splitting optical path the first line-scan digital camera 421,
Second line-scan digital camera 422 and third line-scan digital camera 423.Filtering assembly 43 includes the first filtering assembly 431, the second filtering assembly
432 and third filtering assembly 433, first filtering assembly 431 be set to the spectrum groupware 44 and the first linear array phase
Between machine 421, second filtering assembly 432 is set between the spectrum groupware 44 and second line-scan digital camera 422, institute
Third filtering assembly 433 is stated to be set between the spectrum groupware 44 and third line-scan digital camera 423.The present embodiment is suitable for passing through
The case where comparing the gray value of two raw material stream pictures still can not accurately detect foreign fiber, at this point it is possible to pass through Mitsubishi
Mirror separates three Lu Guang, detects foreign fiber by comparing the gray value of three raw material stream pictures.Similar, spectrum groupware 44
It can be other light splitting water chestnut mirrors, such as four water chestnut mirrors, further increase the accuracy of detection by comparing more raw material stream pictures.
Light color provided by the invention or transparent foreign fiber detection system, have a preferable detection effect, and structure it is simple,
It is compact, it is suitble to be installed on other color-selection apparatus.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The above is only a specific embodiment of the invention, is made skilled artisans appreciate that or realizing this hair
It is bright.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. a kind of light color or transparent foreign fiber detection system, which is characterized in that the system comprises lighting device (3) and images
Acquisition device (4),
The lighting device (3) is set between described image acquisition device (4) and raw material flow chute (1), for being raw material flow
Raw material flow in chute (1) provide include cotton and foreign fiber characteristic wave bands incident light, and the lighting device (3)
Vertical height is higher than the upper surface of detection window (2) or is lower than the lower end surface of the detection window (2)；
Described image acquisition device (4) further includes line-scan digital camera camera lens (41), for receiving through the line-scan digital camera camera lens
(41) light and the line-scan digital camera (42) being imaged and the line-scan digital camera camera lens (41) and the line-scan digital camera are set to
(42) filtering assembly (43) between, wherein
The line-scan digital camera camera lens (41) is towards the detection window (2), and the optical axis of the line-scan digital camera camera lens (41) and institute
The center line for stating detection window (2) is overlapped；
The filtering assembly (43) be through wave band cotton or foreign fiber characteristic wave bands, the filtering assembly (43) includes
First filtering assembly (431) and the second filtering assembly (432), wherein
First filtering assembly (431) is 1150-1250nm, 1700-1800nm or 2300-2400nm, institute through wave band
State the second filtering assembly (432) is 1475-1575nm, 1880-1980nm or 2070-2170nm through wave band；
The lighting device (3) is the laser line light source with cotton or foreign fiber characteristic wave bands, the detection window (2)
Background material is polytetrafluoroethylene (PTFE).
2. light color according to claim 1 or transparent foreign fiber detection system, which is characterized in that the system also includes
Spectrum groupware (44), the spectrum groupware (44) be set to the line-scan digital camera camera lens (41) and the filtering assembly (43) it
Between.
3. light color according to claim 2 or transparent foreign fiber detection system, which is characterized in that the spectrum groupware
It (44) is plane spectroscope, the line-scan digital camera (42) includes be located at the plane spectroscope transmitted light path first
The second line-scan digital camera (422) of line-scan digital camera (421) and the plane spectroscope reflected light path.
4. light color according to claim 3 or transparent foreign fiber detection system, which is characterized in that the plane light splitting
Angle between mirror and the line-scan digital camera camera lens (41) optical axis is 45 °.
5. light color according to claim 4 or transparent foreign fiber detection system, which is characterized in that the filtering assembly
It (43) include the first filtering assembly (431) and the second filtering assembly (432), first filtering assembly (431) is set to described
Between spectrum groupware (44) and first line-scan digital camera (421), second filtering assembly (432) is set to the light splitting group
Between part (44) and second line-scan digital camera (422).
6. light or transparent foreign fiber detection system described in -5 any one according to claim 1, which is characterized in that described
Lighting device (3) includes hollow illumination body (31) and the light source assembly for being set to the illumination body (31) inside
(32), illumination body (31) side is additionally provided with opening (33), and the opening (33) is towards the detection window (2).
7. light color according to claim 6 or transparent foreign fiber detection system, which is characterized in that the lighting device
It (3) further include light barrier (34), the light barrier (34) is covered in the light source assembly (32) towards the side of the opening (33)
On face.
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| CN201610579535.8A CN105951415B (en) | 2016-07-21 | 2016-07-21 | A kind of light color or transparent foreign fiber detection system |
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| CN201610579535.8A CN105951415B (en) | 2016-07-21 | 2016-07-21 | A kind of light color or transparent foreign fiber detection system |
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| CN105951415B true CN105951415B (en) | 2019-05-28 |
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| CN107727580A (en) * | 2017-10-30 | 2018-02-23 | 凌云光技术集团有限责任公司 | Foreign Fiber Detecting Device and method |
| CN109630912A (en) * | 2019-02-27 | 2019-04-16 | 合刃科技（武汉）有限公司 | Lighting device, machine vision equipment and illumination adjustments method |
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