CN207502423U - Back projection type photodetection yarn cleaning device - Google Patents
Back projection type photodetection yarn cleaning device Download PDFInfo
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- CN207502423U CN207502423U CN201721141686.1U CN201721141686U CN207502423U CN 207502423 U CN207502423 U CN 207502423U CN 201721141686 U CN201721141686 U CN 201721141686U CN 207502423 U CN207502423 U CN 207502423U
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- yarn
- luminous tube
- cleaning device
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Abstract
The technical issues of the utility model is related to back projection type photodetection yarn cleaning device to solve to detect hetero fibre and homogeneity heterochromatic fiber using the yarn cleaning device of photo-electric detection method in the prior art.The front end of luminous tube flushes setting with the photosurface of detector so that the light that luminous tube is sent out will not be directly entered in detector, but reflect or be reflected back by speculum the photosurface of detector after being filtered through optical filter and irradiating yarn to be detected by yarn to be detected again, be conducive to reduce influence of the veiling glare signal to testing result, improve the signal-to-noise ratio for collecting signal.And PIN type ultraviolet enhancement silicon photoelectric diode enables it to begin to respond in relatively low wave band, and the photo-current intensity that can be generated after certain power light irradiation is received is larger, so the utility model has great light wave capture rate and photoelectric current conversion ratio, thus the heterochromatic fiber of homogeneity and the homochromy hetero fibre in yarn to be detected can be detected using only photo-electric detection method.
Description
Technical field
The utility model is related to back projection type photodetection yarn cleaning devices.
Background technology
To improve the quality of textile, need to detect different variegated, this process of hetero fibre and homo-fibers
It is referred to as clearing.Widely applied clearing method has photo-electric detection method, capacitance detection method and the two phase in the world today
With reference to detection method.
The principle of photo-electric detection method as shown in Figure 1, including the front and rear luminous tube 1 being sequentially arranged, yarn 2 and detector 3,
With luminous tube direct irradiation yarn to be detected, yarn shelves remove some light that luminous tube emits, and detector is detected and hidden
The variable quantity of the luminous flux gone and yarn quality is detected.This method uses the variable quantity for the luminous flux being screened off to by yarn to make
To evaluate variable, therefore it can only generally detect the tieing on yarn, card nailing neps, short and thick, long thick, long thin etc. can influence yarn cross section
Long-pending quality problem cannot but detect hetero fibre and the heterochromatic fiber of homogeneity.
And the external method for thering are some electronic yarn clearers to be combined using photo-electric and condenser type detection, though it can detect different
But there is the shortcomings that design is complicated, cost is high in matter fiber and same color fibre.
Utility model content
The purpose of this utility model is to provide a kind of back projection type photodetection yarn cleaning devices to solve in the prior art
The technical issues of cannot detecting hetero fibre and homogeneity heterochromatic fiber using the yarn cleaning device of photo-electric detection method.
To achieve the above object, the back projection type photodetection yarn cleaning device of the utility model uses following technical scheme：
Back projection type photodetection yarn cleaning device, luminous tube and detector including being set to yarn rear to be detected, also
Including the speculum being set in front of yarn to be detected, the front end face of luminous tube flushes setting with the photosurface of detector, shines
Pipe with detector in front of be additionally provided with for choose 330nm~470nm wave band light optical filter, the speculum it is anti-
Smooth surface is parallel with the photosurface of detector, and the luminous tube includes UV LED, and it is ultraviolet that the detector includes PIN type
Enhanced type silicon photodiode.
The luminous tube is symmetrically arranged on the left and right sides of detector, and the quantity per side luminous tube is at least two, per side
Luminous tube along the vertical direction uniformly at intervals.
The housing of luminous tube include can divergent rays frosting.
Signal processing system is connected on the detector, signal processing system includes the signal being sequentially arranged and receives mould
Block, amplification module, filter module, Shaping Module and compare output module.
The beneficial effects of the utility model are as follows：In the back projection type photodetection yarn cleaning device of the utility model, shine
The front end of pipe flushes setting with the photosurface of detector so that the light that luminous tube is sent out will not be directly entered in detector, but meeting
Reflect or be reflected back by speculum the light of detector by yarn to be detected again after optical filter filters and irradiates yarn to be detected
Quick face is conducive to reduce influence of the veiling glare signal to testing result, improves the signal-to-noise ratio of acquisition signal.And the ultraviolet enhancing of PIN type
Type silicon photoelectric diode enables it to begin to respond in relatively low wave band, and can be generated after certain power light irradiation is received
Photo-current intensity it is larger, thus can be only so the utility model has great light wave capture rate and photoelectric current conversion ratio
The heterochromatic fiber of homogeneity and the homochromy hetero fibre in yarn to be detected are detected using photo-electric detection method.
Further, setting form of the housing of luminous tube including frosting so that the light that luminous tube is sent out can be by frosted
Sand line to be detected is irradiated uniformly across optical filter again after the diverging of face, is conducive to improve sand line each section reception light intensity to be detected
Uniformity coefficient, increase judges the probability of the heterochromatic fiber of homogeneity and homochromy hetero fibre.
Description of the drawings
Fig. 1 is the schematic diagram of photo-electric detection method clearing；
Fig. 2 is the structure diagram of one embodiment of the back projection type photodetection yarn cleaning device of the utility model；
Fig. 3 is the response curve of the ultraviolet enhancement silicon photoelectric diode of the utility model.
Specific embodiment
The embodiment of the back projection type photodetection yarn cleaning device of the utility model：
The concrete structure of the back projection type photodetection yarn cleaning device of the utility model is as shown in Fig. 2, including stent 1.Branch
Frame 1 includes the first medial surface 11 positioned at front, the second medial surface 12 being located behind and underlying third medial surface 13,
So that stent 1 is concave, the central cavity 14 of spill is used to supply for first medial surface 11, the second medial surface 12 and third medial surface 13
Yarn 6 to be detected passes through in left-right direction.Stent 1 is separated into fore-stock 15 and after-poppet 16 by central cavity 14.
The cross-sectional shape of after-poppet 16 is rectangle, and its middle part offers the front and rear rectangular through-hole 17 penetrated through,
17 or so width of through-hole is 6.45mm, upper-lower height 6.2mm, and detector 3 is equipped in through-hole 17.In through-hole on after-poppet 16
17 left and right ends respectively open up that there are three for installing the luminous tube mounting hole 18 of luminous tube 2.Three luminous tubes per side are installed
Along the vertical direction uniformly at intervals, the luminous tube mounting hole 18 of 16 left and right sides of after-poppet is symmetrical in hole 18.In other implementations
In example, the left and right sides of after-poppet can also respectively install two or more luminous tubes 2.2 number of luminous tube is more, sends out
Light is more uniform.Light to send out luminous tube 2 is more uniformly distributed, and the surface of shell of luminous tube 2 is frosting, so by housing
The light that inside is sent out can be equably irradiated into central cavity 14 after frosting dissipates.
Luminous tube 2 is the ultra-violet light-emitting pipe that can send out the light that wave-length coverage is 340nm~405nm.Luminous tube 2 and detection
The front end of device 3 is no more than the second medial surface 12, is provided on the second medial surface 12 and only allows wave-length coverage for filtering off heterogeneous light
For 330nm~470nm light by optical filter 4.Speculum 5 is provided on first medial surface 11.
After ultraviolet lighting is mapped on the yarn to be detected 6 in central cavity 14, it can be reflected by speculum 5, it is anti-
It is emitted back towards the light come to be irradiated on the photosurface of detector 3 by optical filter, detector 3 is converted to the optical signal received micro-
Weak electric signal, electric signal can send out control signal to cut off in yarn 6 to be detected after being handled again through signal processing system 7
Heterogeneous same color fibre and the heterochromatic fiber of homogeneity.
Signal processing system 7 includes signal receiving module 71, amplification module 72, filter module 73, Shaping Module 74 and ratio
Compared with output module 75.Signal receiving module 71 includes micro current amplifier, it collectively constitutes main amplifying circuit with amplification module 72,
The waveform that main amplifying circuit receives it signal is only amplified and without rebuilding, handling, in order to avoid influence the reduction of its signal
Property.Variegated signal section that filter module 73 is used in recovering signal simultaneously demodulates the variation of variegated signal.So detector 3 arrives
Optical signal through amplifying, filtering, shaping, relatively after in i.e. exportable yarn to be detected 6 whether including homochromy hetero fibre or
The detection signal of the heterochromatic fiber of homogeneity.
If 6 material of yarn to be detected is the heterogeneous yarns such as polypropylene fiber silk, dacron thread or nylon yarn, it is irradiated to yarn 6 to be detected
On ultraviolet light can be excited and generate fluorescence, part fluorescence can back-propagation and across optical filter 5 and being received by detector 3
It arrives, and another part fluorescence is filtered by optical filter 5 after being reflected with ultraviolet light through speculum 5 and is projected onto detector 3
Photosurface on.So speculum 5 is provided with conducive to the intensity of the 3 collected fluorescence signal of energy of increase detector.
If 6 material of yarn to be detected is common cotton, the ultraviolet light being irradiated on yarn 6 to be detected can be by yarn to be detected
Line 6 reflects, remaining ultraviolet lighting is reflected by a reflector back again after being mapped on speculum 5, by ultraviolet after reflection
Light is irradiated to after the filtering of optical filter 5 on the photosurface of detector 3.
Since the light intensity of fluorescence is less than the light intensity of ultraviolet light, if there is heterogeneous yarn in yarn, the light intensity that detector 3 receives
Signal can reduce, so can be by faint letter caused by fiber heterogeneous, homogeneity is heterochromatic homochromy in yarn using the utility model
Number judge and acquire out, 0 and 1 signal is sent out for circuit judgement system, it is heterogeneous homochromy with the heterochromatic fiber of homogeneity to cut off.
The light intensity difference of fluorescence and ultraviolet light is away from little simultaneously, thus the detector 3 for needing precision high could believe fluorescence
Number judge and acquire out, this to detector 3 have high requirement.
The detector 3 of the utility model is PIN type ultraviolet enhancement silicon photo diode, to accelerate the response speed of detector 3
Degree, ultraviolet enhancement silicon photo diode are made of resistivity of high resistivity N-type (111) silicon chip of 3000 Ω cm.Silicon chip ruler
Very little is 6 inches, single-sided polishing, field oxide thickness 1000nm.One face implantation dosage is 4x1014cm-2~5x1014cm-2, energy be
The boron of 30Kev and form p-shaped area, another side implantation dosage be 5x1015cm-2, energy form N+ areas, silicon for the phosphorus of 100Kev
P type island region polishing, the polishing of N+ areas of piece.The oxidated layer thickness in burnishing surface p type island region and the N+ areas of bottom surface facet be thinned to 50nm~
60nm.It is made annealing treatment using two-period form high/low temperature, is first handled 30 seconds under 1000 DEG C of environment of high temperature, then in 600 DEG C of environment of low temperature
Lower processing 8 to 12 hours.The photosensitive area of ultraviolet enhancement silicon photo diode being finally made can be 4mmx4mm, can also
It is 6.19mmx6.425mm or other users desired value, breakdown reverse voltage is more than 80V, junction capacity Ct=0.106nF.It can be from
190nm is begun to respond to, peak value of response 720nm.The irradiation of 1W light is received at wavelength 200nm, can generate 0.10A's or so
Photoelectric current.The irradiation of 1W light is received at wavelength 390nm, the photoelectric current of 0.065A or so can be generated.In the peak response of 720nm
Place receives the irradiation of 1W light, can generate the photoelectric current of 0.36A or so.25, it is 10 to add the dark current that 1V reverse bias measures-10A。
Prepare raw material it is identical in the case of, nearshore pine company of state N-type silicon chip a face implantation dosage be 1x1015cm-2, energy be 150Kev boron, N-type silicon chip another side implantation dosage be 1x1015cm-2, energy be 150Kev phosphorus, then
It is handled 8 to 12 hours under 1100 DEG C of environment, the junction capacity Ct=1.3nF for the S1266-8BQ silicon photo diodes being finally made.
By above-mentioned comparing result it is found that the utility model prepare silicon photo diode response speed improve 10 times with
On so that the heterogeneous homochromy and heterochromatic fiber of homogeneity is detected according to photo-electric detection method in yarn cleaning device and is possibly realized.This practicality
The specific effect of novel silicon photo diode detect by China National Measuring Science Research Inst., certificate number GXte2008-0317,
Test result is as shown in Figure 3.
If the veiling glare being mixed into detector 3 is more to cover measured signal, it is unfavorable for the judgement and acquisition of fluorescence signal.By
The veiling glare that the outside of stent 1 is irradiated into central cavity 14 can reflect central cavity 14 after speculum 5 is encountered by speculum 5
Without direct irradiation on the photosurface of detector 3, be conducive to eliminate veiling glare.The effect of veiling glare is filtered out for enhancing speculum 5,
The rear side minute surface of speculum 5 is parallel to the photosurface of detector 3.
The front end face of luminous tube 2 flushes setting with the front end face of detector 5 in the utility model, so that luminous tube 2 is sent out
The light gone out will not be directly entered in detector 5 but can filter and be traveled in central cavity 14 through optical filter 4.
Claims (4)
1. back projection type photodetection yarn cleaning device, it is characterised in that：Including be set to yarn rear to be detected luminous tube and
Detector, further includes the speculum being set in front of yarn to be detected, and the front end face of luminous tube is flushed with the photosurface of detector
Setting, be additionally provided in front of luminous tube and detector for choose 330nm~470nm wave band light optical filter, it is described
The reflective surface of speculum is parallel with the photosurface of detector, and the luminous tube includes UV LED, the detector packet
Include PIN type ultraviolet enhancement silicon photoelectric diode；The height electricity that ultraviolet enhancement silicon photo diode is 3000 Ω cm by resistivity
Resistance rate N-type (111) silicon chip is made, and die size is 6 inches, single-sided polishing, field oxide thickness 1000nm, and a face implantation dosage is
4x1014cm-2~5x1014cm-2, energy form p-shaped area for the boron of 30Kev, another side implantation dosage is 5x1015cm-2, energy
Phosphorus for 100Kev forms N+ areas, and the p type island region polishing of silicon chip, N+ areas are polished, the N+ areas of burnishing surface p type island region and bottom surface facet
Oxidated layer thickness be thinned to 50nm~60nm.
2. back projection type photodetection yarn cleaning device according to claim 1, it is characterised in that：The luminous tube symmetrically divides
The left and right sides of detector is listed in, the quantity per side luminous tube is at least two, and the luminous tube per side is spaced along the vertical direction
It is uniformly distributed.
3. back projection type photodetection yarn cleaning device according to claim 2, it is characterised in that：The housing of luminous tube includes
Can divergent rays frosting.
4. back projection type photodetection yarn cleaning device described in any one of claim 1 to 3, it is characterised in that：It is described
Signal processing system is connected on detector, signal processing system includes the signal receiving module, amplification module, filter being sequentially arranged
Wave module, Shaping Module and compare output module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721141686.1U CN207502423U (en) | 2017-09-07 | 2017-09-07 | Back projection type photodetection yarn cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721141686.1U CN207502423U (en) | 2017-09-07 | 2017-09-07 | Back projection type photodetection yarn cleaning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207502423U true CN207502423U (en) | 2018-06-15 |
Family
ID=62498021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721141686.1U Expired - Fee Related CN207502423U (en) | 2017-09-07 | 2017-09-07 | Back projection type photodetection yarn cleaning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207502423U (en) |
-
2017
- 2017-09-07 CN CN201721141686.1U patent/CN207502423U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180615 Termination date: 20200907 |