CN201297925Y - Off-tracking sensor - Google Patents
Off-tracking sensor Download PDFInfo
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- CN201297925Y CN201297925Y CNU2008201694448U CN200820169444U CN201297925Y CN 201297925 Y CN201297925 Y CN 201297925Y CN U2008201694448 U CNU2008201694448 U CN U2008201694448U CN 200820169444 U CN200820169444 U CN 200820169444U CN 201297925 Y CN201297925 Y CN 201297925Y
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- object lens
- light source
- spectroscope
- photoreceptors
- shell
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Abstract
The utility model relates to an off-tracking sensor which overcomes the defects that the prior art is not sensitive enough and is not suitable for occasions with higher production rate. In the utility model, a window is disposed on the bottom surface of a shell; a protective lens is arranged on the window; a white light LED light source is arranged at the window in the shell; an optical collector, an upper object lens, a spectroscope and a lower object lens are sequentially arranged under the white light LED light source; an included angle between the spectroscope and the plane of the protective lens is 45 degrees; a through hole is disposed at the focus of the spectroscope below the upper object lens; an image lens, a filter and two photoreceptors are sequentially arranged on the reflected light path of the spectroscope; each photoreceptor is a sheet silicon photoelectric generator with a right-angled triangle plane, and two right-angled triangle planes are combined to form a rectangular plane; and a photocell and the two photoreceptors arranged near the white light LED light source are all connected with a stable light controlling and signal processing circuit board. The utility model has high sensitivity and is convenient to process for the subsequent application.
Description
Technical field
The utility model belongs to technical field of automatic control, is specifically related to a kind of band disalignment photoelectric sensor.
Background technology
In all kinds of band processing, production run such as flexible packaging printing, plastic sheeting processing, paper product, yarn fabric, adhesive tape, metallic foil etc.,, mechanical vibration bad owing to the tension force shakiness in the unit, each motor speed net synchronization capability, bearing wear etc. cause band to be accompanied by horizontal deviation phenomenon in travelling forward, have a strong impact on crudy and speed of production, even caused whole production equipment to move.
To the observing and controlling of band sideslip is basic demand during all kinds of bands are produced, all belong to reflection-type and have at present with the limit with the photoelectric sensor of line measuring ability, its technical scheme and characteristics mainly contain: the one, and be light source with the incandescent lamp, the core of its light path is the water chestnut mirror, receiving device is photoresistance; The 2nd, still be light source, but light path is coaxial reflective structure with the incandescent lamp, to form by convex lens, half anti-mirror, optical filtering etc., receiving device is a photoelectric cell; Three are based on the sideslip detection scheme of ccd image sensing technology; The 4th, be the scheme of light source with the light emitting diode replace incandescent.In one, two schemes, because the incandescent lamp thermal value is big, sensor cavity temperature height, easily cause temperature to be floated and device aging, in addition, cause the colour blindness problem that detects owing to the limitation of incandescent lamp spectrum composition; In scheme three, subject matter is that real-time has much room for improvement at present, is suitable for the band travelling speed and reaches following the high occasion of line accuracy requirement than low; In scheme four, subject matter is that signal to noise ratio (S/N ratio) has much room for improvement at present, and insufficient sensitivity is unsuitable for the higher occasion of speed of production.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art exactly, and a kind of band disalignment photoelectric sensor is provided.
The utility model comprises shell, and shell is a rectangular parallelepiped, and its bottom surface has window, and window side is provided with protective glass.Corresponding the window's position is provided with white LED light source in the shell; be disposed with condenser under the white LED light source, go up object lens, spectroscope and following object lens; wherein condenser, last object lens and following object lens are convex lens; and all be arranged in parallel with protective glass; white LED light source is positioned at the focus place of condenser top, and the top focus of following object lens overlaps with the below focus of last object lens.Spectroscope is a reflective mirror, is reflective surface below it, and the plane included angle of spectroscope and protective glass is 45 degree; Spectroscope focus place below last object lens has the through hole that diameter is 1～3mm.Being disposed with picture mirror, optical filtering and two photoreceptors on spectroscopical reflected light path, is that convex lens, optical filtering are the plane optical filtering as mirror wherein, is provided with as mirror and optical filtering are all vertical with protective glass.Two photoreceptors are the silicon photocell of sheet, and its flat shape is a right-angle triangle; Two photoreceptors are in same plane, and parallel with optical filtering; The hypotenuse position correspondence of two photoreceptors, the combination back is a rectangularity.The emission light of described white LED light source is the pyramid type scattered light, and the position, edge in the pyramid type scattered light is provided with the light source light battery of sensitization.The light source light battery all is connected with signal processing circuit board with the steady photocontrol that is provided with in the enclosure with two photoreceptors.The aviation company's fitting that fixedly installs on the shell is connected with signal processing circuit board with steady photocontrol.
The white light LEDs that the utility model adopts steady photocontrol technology to make light stability, adopt high brightness with the detection colour blindness problem and the heating of having eliminated sensor that overcome incandescent lamp spectrum and cause, overcome temperature and float problem, adopt spectroscope to overcome of the loss of half anti-mirror light illumination and reflected signal with central through hole, the signal to noise ratio (S/N ratio) of detection and sensitivity are greatly improved.In addition, directly export strip edge offset signals and markings offset signals respectively, it is very easy that subsequent applications is handled.The utility model detects aspect the sideslip of the printed patterns edge of strip edge, strip surface or markings and the correction control of many uses, easy to use in such as the processing of all kinds of bands such as flexible packaging printing, plastic sheeting, stationery production and processing, yarn fabric, adhesive tape, metallic foil, production run.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is spectroscopical structural representation;
Fig. 3 concerns synoptic diagram for the edge sideslip at the image space of accepting on the device;
Fig. 4 concerns synoptic diagram for the markings sideslip at the image space of accepting on the device.
Embodiment
As shown in Figure 1, comprise shell 1 based on the band disalignment photoelectric sensor of light stabilizing LED, shell 1 is a rectangular parallelepiped, and its bottom surface has window, and window side is provided with protective glass 9.Corresponding the window's position is provided with white LED light source 2 in the shell 1; be disposed with condenser 13 under the white LED light source 2, go up object lens 12, spectroscope 11 and following object lens 10; wherein condenser 13, last object lens 12 and following object lens 10 are convex lens; and all be arranged in parallel with protective glass 9; white LED light source 2 is positioned at the focus place of condenser 13 tops, and the top focus of following object lens 10 overlaps with the below focus of last object lens 12.Spectroscope 11 is a reflective mirror, is reflective surface below it, and spectroscope 11 is 45 degree with the plane included angle of protective glass 9.Being disposed with picture mirror 8, optical filtering 7 and two photoreceptors 6 on the reflected light path of spectroscope 11, be that convex lens, optical filtering 7 are the plane optical filtering as mirror 8 wherein, as mirror 8 and optical filtering 7 all with protective glass 9 vertical settings.The emission light of white LED light source 2 is the pyramid type scattered light, and the position, edge in the pyramid type scattered light is provided with the light source light battery 4 of sensitization.Light source light battery 4 and two photoreceptors 6 all be arranged on shell 1 in steady photocontrol be connected with signal processing circuit board 5.The aviation company's fitting 3 that fixedly installs on the shell 1 is connected with signal processing circuit board 5 with steady photocontrol.Band arrow dotted line is for detecting light path among the figure.
As Fig. 2, spectroscope 11 focus place below last object lens 12 has the through hole that diameter is 1～3mm.
As Fig. 3 and Fig. 4, two photoreceptor 6-1 and 6-2 are the silicon photocell of sheet, and its flat shape is a right-angle triangle; Two photoreceptors 6 are in same plane, and parallel with optical filtering 7.The hypotenuse position correspondence of two photoreceptors 6, between have the gap, combination back is a rectangularity.
As shown in Figure 3, when sensor is used to detect edge 17 sideslips of band 15, sensor produces edge 17 with the edge 17 of band 15 on the rectangle receiving device group that is made of two triangle light activated element 6-1 and 6-2 imaging 19 (dash area among Fig. 3) is with the signal I of triangle light activated element 6-1 and 6-2 output
1, I
2Promptly get the offset signals y at the edge 17 of band 15 behind the phase adduction subtracting background signal
1
As shown in Figure 4, when sensor is used to detect markings 16 sideslips of band 15, sensor with the markings 16 of band 15 on the rectangle receiving device group that constitutes by two triangle light activated element 6-1 and 6-2, produce markings 16 imaging 20, with the signal I of triangle light activated element 6-1 and 6-2 output
1, I
2Promptly get the offset signals y of the markings 16 of band 15 after subtracting each other
2
In the work; the light that white LED light source sends is passed in light path focus place and is 45 apertures of spending in the spectroscope that is provided with behind condenser and last object lens optically focused; and by forming directional light behind the object lens down; form rectangle through a slice protective glass again and detect the tested zone that hot spot is radiated at strip surface; the light reflected light that generation intensity changes with sideslip in the zone at tested markings of strip surface or edge; it is again through protective glass; the picture mirror of following object lens and spectroscope reflection back by being provided with main optical path degree of being; optical filtering is imaged on tested strip edge or markings on the rectangle receiving device group that is made of two photoreceptors; the two-way short-circuit current signal of two photoreceptor outputs has been realized the sideslip measuring ability by aviation company's fitting output.Band 15 is in the process of unreeling, when its edge 17 or the horizontal sideslip of markings 16 appearance, misalignment sensor is promptly exported corresponding signal to deviation correcting device, output order makes the correction actuator promote unreeling structure and does the motion opposite with the sideslip direction after the control algolithm computing of deviation correcting device, to reach the purpose of correction control.
Claims (1)
1, a kind of misalignment sensor comprises the shell of rectangular parallelepiped, and it is characterized in that: the bottom surface of shell has window, and window side is provided with protective glass; Corresponding the window's position is provided with white LED light source in the shell, is disposed with condenser under the white LED light source, goes up object lens, spectroscope and following object lens; Wherein condenser, last object lens and following object lens are convex lens, and all be arranged in parallel with protective glass, and white LED light source is positioned at the focus place of condenser top, and the top focus of following object lens overlaps with the below focus of last object lens;
Spectroscope is a reflective mirror, is reflective surface below it, and the plane included angle of spectroscope and protective glass is 45 degree; Spectroscope focus place below last object lens has the through hole that diameter is 1～3mm;
Being disposed with picture mirror, optical filtering and two photoreceptors on spectroscopical reflected light path, is that convex lens, optical filtering are the plane optical filtering as mirror wherein, is provided with as mirror and optical filtering are all vertical with protective glass; Two photoreceptors are the silicon photocell of sheet, and its flat shape is a right-angle triangle; Two photoreceptors are in same plane, and parallel with optical filtering; The hypotenuse position correspondence of two photoreceptors, the combination back is a rectangularity;
The emission light of described white LED light source is the pyramid type scattered light, and the position, edge in the pyramid type scattered light is provided with the light source light battery of sensitization; The light source light battery all is connected with signal processing circuit board with the steady photocontrol that is provided with in the enclosure with two photoreceptors; The aviation company's fitting that fixedly installs on the shell is connected with signal processing circuit board with steady photocontrol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201694448U CN201297925Y (en) | 2008-12-11 | 2008-12-11 | Off-tracking sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201694448U CN201297925Y (en) | 2008-12-11 | 2008-12-11 | Off-tracking sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297925Y true CN201297925Y (en) | 2009-08-26 |
Family
ID=41043906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201694448U Expired - Fee Related CN201297925Y (en) | 2008-12-11 | 2008-12-11 | Off-tracking sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297925Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875512A (en) * | 2015-05-29 | 2015-09-02 | 江苏海大印染机械有限公司 | Printing and dyeing apparatus with photoelectric strip deviation detector |
| CN108801549A (en) * | 2017-04-27 | 2018-11-13 | 宝山钢铁股份有限公司 | A kind of circular rotating coke tank balance detecting device and method |
-
2008
- 2008-12-11 CN CNU2008201694448U patent/CN201297925Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104875512A (en) * | 2015-05-29 | 2015-09-02 | 江苏海大印染机械有限公司 | Printing and dyeing apparatus with photoelectric strip deviation detector |
| CN108801549A (en) * | 2017-04-27 | 2018-11-13 | 宝山钢铁股份有限公司 | A kind of circular rotating coke tank balance detecting device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090826 Termination date: 20111211 |