CN204100995U - Photoelectric rectification sensor - Google Patents
Photoelectric rectification sensor Download PDFInfo
- Publication number
- CN204100995U CN204100995U CN201420394039.1U CN201420394039U CN204100995U CN 204100995 U CN204100995 U CN 204100995U CN 201420394039 U CN201420394039 U CN 201420394039U CN 204100995 U CN204100995 U CN 204100995U
- Authority
- CN
- China
- Prior art keywords
- extinction
- group
- collimation
- photosensitive device
- flexible
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model discloses a kind of photoelectric rectification sensor, belong to photoelectric error correction detection technique field, this photoelectric rectification sensor does not affect by this tested web tension state when carrying out correction detection to stretchable translucent tested band.Comprise support, support is furnished with three groups of identical photodetector unit, often organize photodetector unit and comprise light source, collimation lens, No. two collimation lenses and a photosensitive device, light source in same group of photodetector unit, collimation lens, No. two collimation lenses and a photosensitive device are arranged from top to bottom successively along a vertical straight line, light source arrangement is at the focus place of a collimation lens, a collimation lens is parallel just to layout with No. two collimation lenses, and photosensitive device is arranged in the focus place of No. two collimation lenses; The voltage output end of each photosensitive device is connected on three voltage output interfaces of photoelectric rectification sensor respectively one to one.
Description
Technical field
The utility model relates to photoelectric error correction detection technique field, particularly relates to a kind of photoelectric rectification sensor.
Background technology
In recent years, along with basic manufacture field as the industry developments such as chemical industry, papermaking, weaving and clothing, packaging and printing, ferrous metal and non-ferrous metal are rapid, more and more higher to the requirement degree of robotization, the developing trend of corresponding automation control system is in high precision, high segmentation degree, high-adaptability etc.And tested band often has various external interference to it and impacts in winding production run; it is made to occur the phenomenon of sideslip in the process of walking; thus cause its processing shear quantitative change large; increase cost; when sideslip is more serious; strip edge generation flanging, even can be forced to stop work by damage equipment, causes no small loss to enterprise.
It is that signal by detecting its side-play amount realizes that correction detection system detects whether tested band offset, current great majority utilize tested band to realize the detection at correction edge to light or ultrasonic partial occlusion, but this kind of sensor is mainly applicable to light tight or sound-proof coiled material, although can use for specific translucent or porosint, also must carry out initial setting or demarcation to often kind of material, and can along with the material of tension variation for coiled material printing opacity or entrant sound rate, because the light inciding sensor had both made when edge does not move that it still changes, make original single-sensor Photoelectric Detection completely inapplicable.Although may be used for the rim detection of rectifying a deviation of changeable material with CCD or cmos digital formula imageing sensor, its cost is higher, and speed is relatively slow.So how designing a kind of detection system that can not affect by stretchable translucent tested web tension state is a unsolved difficult problem always.Because the extended state of stretchable translucent tested band can affect the transmittance of this tested band, namely how to design a kind of detection system do not affected by tested band transmittance is a unsolved difficult problem always.
Utility model content
The utility model affects the deficiency of this tested deviation rectification of strip weak effect in order to solve existing correction detection system in the change carrying out being vulnerable to when rectifying a deviation and detect this tested web tension state for stretchable translucent tested band, provide a kind of when carrying out correction on the tested band of stretchable flexible translucent and detecting not by the photoelectric rectification sensor that this tested web tension state affects.
To achieve these goals, the utility model is by the following technical solutions:
Photoelectric rectification sensor, comprise support, on support, laterally stationary cloth is equipped with three groups of identical photodetector unit side by side, often organize photodetector unit and comprise light source, a collimation lens of directional light can be produced, No. two collimation lenses of energy optically focused and photosensitive device, and the light source in same group of photodetector unit, a collimation lens, No. two collimation lenses and photosensitive device are arranged from top to bottom successively along a vertical straight line, light source arrangement is at the focus place of a collimation lens, a collimation lens is parallel just to layout with No. two collimation lenses, photosensitive device is arranged in the focus place of No. two collimation lenses, the voltage output end of each photosensitive device is connected on three voltage output interfaces of photoelectric rectification sensor respectively one to one.
The photodetector unit of often organizing of this programme produces one group of directional light the collimation lens that the light beam coming from place group light source passes its correspondence.
Directional light in group C is through after the tested band No. two collimation lenses in the collimation lens be in group C and group C, received by the photosensitive device in group C after focusing on through No. two collimation lenses in group C again, photosensitive device in group C then carries out opto-electronic conversion, and the voltage U that group C opto-electronic conversion produces
cbe sent on a voltage output interface corresponding to photoelectric rectification sensor group C.
Directional light in group A is received by the photosensitive device in group A after directly focusing on through No. two collimation lenses in group A, and the photosensitive device in group A then carries out opto-electronic conversion, and the voltage U that group A opto-electronic conversion produces
abe sent on a voltage output interface corresponding to photoelectric rectification sensor group A.
A part of directional light in group B, through after the tested band No. two collimation lenses in the collimation lens be in group B and group B, by photosensitive device group B in is received after focusing on again through No. two collimation lenses in group B; Another part directional light in group B is received by the photosensitive device in group B after directly focusing on through No. two collimation lenses in group B.This two parts light then can carry out opto-electronic conversion to the photosensitive device in group B simultaneously, and the voltage U that group B opto-electronic conversion produces
bbe sent on a voltage output interface corresponding to photoelectric rectification sensor group B.
The light intensity I that three groups of photodetector unit Zhong tri-road light sources send
0, area S is completely equal, and the characteristic according to photosensitive device can obtain:
U
a＝kI
0 (1)；
U
c＝kI
0t (2)；
Wherein, I
0for light source intensity of illumination, k is the coefficient of photosensitive device receiving light power, and t is the transmittance of tested band, U
a, U
band U
cbe respectively the magnitude of voltage exported after photosensitive device carries out opto-electronic conversion in group A, group B and group C.
Due to the area S that No. two collimation lenses organizing B are lived by tested band shield
1size by tested strip edge position influence, so group B magnitude of voltage except affecting by marginal position, be also subject to the impact of tested band transmittance t.
Because the tension force of flexible (variable) translucent tested band is very little, in common volume machine scrolling process, the transmittance t of tested band changes very big in scrolling walking process, therefore, and the magnitude of voltage U that traditional edge detection method records
btruly can not reflect the marginal position of the tested band of flexible translucent.For the marginal position realizing the translucent tested band of flexibility (variable) detects, first the output voltage values U in group A
awith the magnitude of voltage U exported in group B
bask poor, then the output voltage values U in group A
awith the magnitude of voltage U exported in group C
cask poor, and then these two differences are carried out calculating of being divided by, the side-play amount r of now tested band can be drawn;
r＝(U
a-U
b)/(U
a-U
c)＝s
1/s (4)；
From formula (4), the final fiducial value of side-play amount r is only relevant with the marginal position of tested band, and side-play amount r is not by the impact that the transmittance r of flexible (variable) translucent tested band changes.
This programme is when carrying out correction and detecting to the translucent tested band of stretchable flexibility (variable), the extended state of this tested band change all can not affect this photoelectric rectification sensor and detection method thereof to the detection of this tested deviation rectification of strip effect.Three tunnel photodetector unit are utilized to gather light signal through amplifying output voltage values, the transmittance t obtaining side-play amount r that three Road Edges of the present utility model survey and tested band after formulae discovery abbreviation has nothing to do, and achieving this programme does not affect by this tested web tension state when carrying out correction detection to stretchable translucent tested band.So this programme can effectively avoid because of tested band exist stretching reason make tested band light transmission change and make the affected problem of correction testing result.Namely this programme solves the translucent tested band of stretchable flexibility (variable) when carrying out correction and detecting not by the difficult problem that this tested band transmittance affects.
As preferably, be locked at the edge of a collimation lens and be connected with extinction cover, the upper port sealing shroud stressed joint of upper extinction cover is on the lamp socket of light source, the lower ending opening bore of upper extinction cover is greater than the diameter of a collimation lens, be connected with some freedom upper flexible extinction curtain palpus down at the lower ending opening edge that upper extinction overlaps, on every root, the length of flexible extinction curtain palpus is less than the level interval distance of lower port to a collimation lens edge of extinction cover; Be locked at the edge of No. two collimation lenses and be connected with lower extinction cover, the lower port sealing shroud stressed joint of lower extinction cover is on the mount pad of photosensitive device, the upper end open bore of lower extinction cover is greater than the diameter of No. two collimation lenses, be connected with some freedom lower flexible extinction curtain palpus upward at the upper end open edge that lower extinction overlaps, under every root, the length of flexible extinction curtain palpus is less than the distance of upper port to the level interval at No. two collimation lens edges of lower extinction cover; Described flexible extinction curtain must low side end to described lower flexible extinction curtain palpus top between spacing be 1 to 3 times of tested thickness of strip.
Upper extinction cover in this programme, lower extinction cover, upper flexible extinction curtain must and the effect of lower flexible extinction curtain comprise: one is play the effect of blocking external interference light, allow the photosignal collected be sent by the light source organized in this programme in A, group B and group C completely, accuracy and the reliability of testing result can be ensured like this.Two is the stray lights absorbing the reflection of light source, collimation lens, No. two collimation lenses and a photosensitive device and tested band or scattering etc., ensures testing result more accurately and reliably.Three is the clean degree protecting light source, a collimation lens and No. two collimation lenses, and then ensures testing result more accurately and reliably.Four is that upper flexible extinction curtain palpus and lower flexible extinction curtain can also be opened the foreign material eliminating be attached on tested band, because the foreign material on tested band can affect the transmittance t at tested band place, foreign material place, and transmittance t has a direct impact the size of voltage after the opto-electronic conversion of photosensitive device, so by upper flexible extinction curtain must and lower flexible extinction curtain the foreign material on tested band can not be entered in correction surveyed area, and then guarantee testing result is more accurately and reliably.
As preferably, also comprise directional beam generator and light sensor, the outside surface of the upper and lower flexible extinction curtain palpus of the outside surface of upper flexible extinction curtain palpus is all pasted and is connected with reflective membrane, the directional beam that directional beam generator sends is irradiated on light sensor after reflective membrane reflection.
If the elasticity of tested web tension is inadequate, just there will be in the longitudinal walking process of tested band and fluctuate up and down, fluctuate up and down and easily cause tested band to wander off, the deficiency that the voltage signal follow-up data process frequency that not only increases the collection of the utility model photoelectric rectification sensor of being easy to wander off is high causes, cost higher to processor requirement to increase, also can increase the difficulty to tested deviation rectification of strip, even also can reduce the quality of product.If the degree that tested band fluctuates up and down is comparatively large, tested band will touch flexible extinction curtain palpus or lower flexible extinction curtain, and upper flexible extinction curtain palpus or lower flexible extinction curtain will rock.The upper flexible extinction curtain palpus rocked or lower flexible extinction curtain will change the reflection paths of directional beam, after the reflection paths change of directional beam, this directional beam will depart from or irradiate less than light sensor, thus the directional beam signal making light sensor receive weakens, just the degree size that tested band fluctuates up and down can be known by the magnitude of voltage situation of change after the opto-electronic conversion of collection light sensor, thus take measures in time to adjust the elasticity of tested web tension, allow the stretching elasticity of tested band in the scope allowing fluctuation.This can not only ensure the rectify a deviation accuracy of testing result and reliability, can also ensure tested band be rolled into after product quality reliability high.
The utility model can reach following effect:
1, the utility model is when carrying out correction and detecting to stretchable translucent tested band, how extended state regardless of this tested band changes, when carrying out correction to this tested band and detecting, the extended state of this tested band change all can not affect this photoelectric rectification sensor and detection method thereof to the detection of this tested deviation rectification of strip effect.
2, the utility model utilizes three tunnel photodetector unit to gather light signal through amplifying output voltage values, after formulae discovery abbreviation, obtain side-play amount that three Road Edges of the present utility model survey and tested band transmittance has nothing to do, achieve and do not affect by this tested web tension state when carrying out correction detection to stretchable translucent tested band.
3, the utility model can effectively avoid because of tested band exist stretching reason make tested band light transmission change and make the affected problem of correction testing result.
4, correction rim detection structure of the present utility model is simple, and cost is low, fast response time.
Accompanying drawing explanation
Fig. 1 is a kind of structural principle schematic diagram after the utility model removing support.
Fig. 2 is a kind of using state structural principle schematic diagram of the present utility model.
Fig. 3 be add on the basis of Fig. 1 extinction cover, lower extinction cover, on flexible extinction curtain palpus, a kind of structural principle schematic diagram after lower flexible extinction curtain, directional beam generator and light sensor.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Example one: photoelectric rectification sensor, shown in Fig. 1, Fig. 2, comprise two supports (support does not draw in the description of the drawings), one of them support is fixedly connected on the volume machine above tested band longitudinally walking section front, and another support is fixedly connected on the volume machine above tested band longitudinally walking section rear end side.And on each support respectively laterally side by side stationary cloth be equipped with three groups of identical photodetector unit, these three groups of identical photodetector unit are designated as group A, group B and group C respectively.Often organize photodetector unit comprise light source 10, a collimation lens 20 of directional light can be produced, can No. two collimation lenses 30 of optically focused and photosensitive device 40, and the light source in same group of photodetector unit, collimation lens, No. two collimation lenses and a photosensitive device are arranged from top to bottom successively along a vertical straight line, light source arrangement is at the focus place of a collimation lens, a collimation lens is parallel just to layout with No. two collimation lenses, and photosensitive device is arranged in the focus place of No. two collimation lenses; The voltage output end of each photosensitive device is connected on three voltage output interfaces 50 of photoelectric rectification sensor respectively one to one.
Correspondingly, the detection method of the photoelectric rectification sensor of example one, comprises the following steps:
Step one, if three groups of identical photodetector unit are respectively group A, group B and group C, and establishes the light intensity I that three road light sources of group A, group B and these three groups of photodetector unit of group C send
0completely equal, also establish the glazed area S of three No. two collimation lenses of group A, group B and these three groups of photodetector unit of group C also completely equal.
Step 2, lays the tested band 100 on volume machine; Support is fixed in volume frame, and make on support three groups of horizontal side-by-side horizontal fixed and arranged of identical photodetector unit, allow No. two collimation lenses of group A without tested band shield, allow No. two collimation lenses of group C completely by tested band shield, allow No. two collimation lenses of group B have S
1area by tested band shield, namely allow group B No. two collimation lenses have S-S
1area not by tested band shield;
Step 3, the magnitude of voltage exported after the A of collection group respectively, group B and the photosensitive device organized in C carry out opto-electronic conversion simultaneously in section at one time; Allow tested band relative to three groups of photodetector unit longitudinally walking of horizontal side-by-side horizontal fixed and arranged, and allow the side of tested band longitudinally pass through between a collimation lens and No. two collimation lenses; The magnitude of voltage exported after photosensitive device carries out opto-electronic conversion in group A, group B and group C is calculated respectively according to the light transfer characteristic of photosensitive device;
U
a＝kI
0 (1)；
U
c＝kI
0t (2)；
Wherein, I
0for light source intensity of illumination, k is the coefficient of photosensitive device receiving light power, and t is the transmittance of tested band, U
a, U
band U
cbe respectively the magnitude of voltage exported after photosensitive device carries out opto-electronic conversion in group A, group B and group C.
Step 4, first the output voltage values U in group A
awith the magnitude of voltage U exported in group B
bask poor, then the output voltage values U in group A
cwith the magnitude of voltage U exported in group C
cask poor, and then these two differences are carried out calculating of being divided by, the side-play amount r of now tested band can be drawn;
r＝(U
a-U
b)/(U
a-U
c)＝s
1/s (4)；
From formula (4), the area S that the final fiducial value of side-play amount r is only lived by tested band shield with No. two collimation lenses of group B
1relevant, namely side-play amount r is only relevant with the marginal position of tested band, and side-play amount r is not by the impact that the transmittance r of tested band changes.
Step 5, presets according to the sideslip area requirement that the tested band on volume machine allows the scope that a side-play amount r is allowed to change;
When the value of the tested band side-play amount r calculated is greater than the maximal value that the side-play amount r preset is allowed in variation range, illustrate that tested band deviate from toward the outside of sensor, need in time toward this side of sensor, correction to be carried out to the tested band in volume frame and process;
When the value of the tested band side-play amount r calculated is less than the minimum value that the side-play amount r preset is allowed in variation range, illustrate that tested band deviate from toward this side of sensor, need in time toward the outside of sensor, correction to be carried out to the tested band in volume frame and process;
When the value of the tested band side-play amount r calculated is in the scope that the side-play amount r preset is allowed to change, illustrate that departing from does not appear in tested band, do not need to carry out correction process to the tested band in volume frame.
The course of work of example one:
Example one side before and after tested band longitudinally walking section arranges a photoelectric rectification sensor all respectively and detects, and makes Detection results better, not easily occurs erroneous judgement.
Often organize photodetector unit and the collimation lens that the light beam coming from place group light source passes its correspondence is produced one group of directional light.Directional light in group C is through after the tested band No. two collimation lenses in the collimation lens be in group C and group C, received by the photosensitive device in group C after focusing on through No. two collimation lenses in group C again, photosensitive device in group C then carries out opto-electronic conversion, and the voltage U that group C opto-electronic conversion produces
cbe sent on a voltage output interface corresponding to photoelectric rectification sensor group C.Directional light in group A is received by the photosensitive device in group A after directly focusing on through No. two collimation lenses in group A, and the photosensitive device in group A then carries out opto-electronic conversion, and the voltage U that group A opto-electronic conversion produces
abe sent on a voltage output interface corresponding to photoelectric rectification sensor group A.A part of directional light in group B, through after the tested band No. two collimation lenses in the collimation lens be in group B and group B, by photosensitive device group B in is received after focusing on again through No. two collimation lenses in group B; Another part directional light in group B is received by the photosensitive device in group B after directly focusing on through No. two collimation lenses in group B.This two parts light then can carry out opto-electronic conversion to the photosensitive device in group B simultaneously, and the voltage U that group B opto-electronic conversion produces
bbe sent on a voltage output interface corresponding to photoelectric rectification sensor group B.
The light intensity I that three groups of photodetector unit Zhong tri-road light sources send
0, area S is completely equal, and the characteristic according to photosensitive device can obtain:
U
a＝kI
0 (1)；
U
c＝kI
0t (2)；
Wherein, I
0for light source intensity of illumination, k is the coefficient of photosensitive device receiving light power, and t is the transmittance of tested band, U
a, U
band U
cbe respectively the magnitude of voltage exported after photosensitive device carries out opto-electronic conversion in group A, group B and group C.
Output voltage values U in calculating group A
awith the magnitude of voltage U exported in group B
bdifference, and with group A with organize the difference of output voltage values in C and carry out doing except comparing, this do except the result comparing gained be now this time discontinuity surface in the side-play amount r of tested band;
r＝(U
a-U
b)/(U
a-U
c)＝s
1/s (4)；
When carrying out correction to stretchable translucent tested band and detecting, how extended state regardless of this tested band changes, when carrying out correction to this tested band and detecting, the extended state of this tested band change all can not affect this photoelectric rectification sensor and detection method thereof to the detection of this tested deviation rectification of strip effect.Three tunnel photodetector unit are utilized to gather light signal through amplifying output voltage values, after formulae discovery abbreviation, obtain side-play amount that three Road Edges of the present utility model survey and tested band transmittance has nothing to do, achieve and do not affect by this tested web tension state when carrying out correction detection to stretchable translucent tested band.So can effectively avoid because of tested band exist stretching reason make tested band light transmission change and make the affected problem of correction testing result.
Example two: the detection method of photoelectric rectification sensor, shown in Fig. 1, Fig. 2, if in the step 2 of example one, when laying the tested band on volume machine, horizontally disposed for tested band, allow the line of centres between a collimation lens center and No. two collimation lens centers perpendicular to the surface level of tested band, and a side edge of tested band is dropped in a longitudinal perpendicular together with the line of centres, allow No. two collimation lenses of group B by the area S of tested band shield
1the half of No. two collimation lens glazed area S of group B, namely
In example two, the detection method of photodetector unit is identical with example one with the course of work, owing to organizing No. two collimation lenses of B by the area S of tested band shield
1the half of No. two collimation lens glazed area S of group B, namely
so just there is the situation of side-play amount r=0, namely realize the zero process of correction process, be convenient to follow-up data processing and manual observation.
Example three: photoelectric rectification sensor, shown in Figure 3, example three be add on the structural principle schematic diagram of example one extinction cover, lower extinction cover, on flexible extinction curtain must and lower flexible extinction curtain after a kind of structural principle schematic diagram.Be locked at the edge of a collimation lens and be connected with extinction cover 60, the upper port sealing shroud stressed joint of upper extinction cover is on the lamp socket of light source, the lower ending opening bore of upper extinction cover is greater than the diameter of a collimation lens, be connected with some freedom upper flexible extinction curtain palpus 70 down at the lower ending opening edge that upper extinction overlaps, on every root, the length of flexible extinction curtain palpus is less than the level interval distance of lower port to a collimation lens edge of extinction cover; Be locked at the edge of No. two collimation lenses and be connected with lower extinction cover 90, the lower port sealing shroud stressed joint of lower extinction cover is on the mount pad of photosensitive device, the upper end open bore of lower extinction cover is greater than the diameter of No. two collimation lenses, be connected with some freedom lower flexible extinction curtain palpus 80 upward at the upper end open edge that lower extinction overlaps, under every root, the length of flexible extinction curtain palpus is less than the distance of upper port to the level interval at No. two collimation lens edges of lower extinction cover; Upper flexible extinction curtain must low side end to lower flexible extinction curtain palpus top between spacing be 1 to 3 times of tested thickness of strip.Also comprise directional beam generator 112 and light sensor 113, the outside surface of the upper and lower flexible extinction curtain palpus of the outside surface of the upper flexible extinction curtain palpus of group C and group B is all pasted and is connected with reflective membrane, the directional beam 111 that directional beam generator sends is irradiated on light sensor after reflective membrane reflection.
In example three, the detection method of photodetector unit is identical with example one with the course of work, and difference is that example three has done optimization process on correction surveyed area and reduction data processing difficulty and guarantee product quality, makes correction testing result more accurately and reliably.Upper extinction cover, lower extinction cover, upper flexible extinction curtain must and the effect of lower flexible extinction curtain comprise: one is play the effect of blocking external interference light, allow the photosignal collected be sent by the light source organized in this programme in A, group B and group C completely, accuracy and the reliability of testing result can be ensured like this.Two is the stray lights absorbing the reflection of light source, collimation lens, No. two collimation lenses and a photosensitive device and tested band or scattering etc., ensures testing result more accurately and reliably.Three is the clean degree protecting light source, a collimation lens and No. two collimation lenses, and then ensures testing result more accurately and reliably.Four is that upper flexible extinction curtain palpus and lower flexible extinction curtain can also be opened the foreign material eliminating be attached on tested band, because the foreign material on tested band can affect the transmittance t at tested band place, foreign material place, and transmittance t has a direct impact the size of voltage after the opto-electronic conversion of photosensitive device, so by upper flexible extinction curtain must and lower flexible extinction curtain the foreign material on tested band can not be entered in correction surveyed area, and then guarantee testing result is more accurately and reliably.
If the elasticity of tested web tension is inadequate, just there will be in the longitudinal walking process of tested band and fluctuate up and down, fluctuate up and down and easily cause tested band to wander off, the deficiency that the voltage signal follow-up data process frequency that not only increases the collection of the utility model photoelectric rectification sensor of being easy to wander off is high causes, cost higher to processor requirement to increase, also can increase the difficulty to tested deviation rectification of strip, even also can reduce the quality of product.If the degree that tested band fluctuates up and down is comparatively large, tested band will touch the upper flexible extinction curtain palpus of group C or group B or lower flexible extinction curtain, and upper flexible extinction curtain palpus or lower flexible extinction curtain will rock.The upper flexible extinction curtain palpus rocked or lower flexible extinction curtain will change the reflection paths of directional beam, after the reflection paths change of directional beam, this directional beam will depart from or irradiate less than light sensor, thus the directional beam signal making light sensor receive weakens, just the degree size that tested band fluctuates up and down can be known by the magnitude of voltage situation of change after the opto-electronic conversion of collection light sensor, thus take measures in time to adjust the elasticity of tested web tension, allow the stretching elasticity of tested band in the scope allowing fluctuation.This can not only ensure the rectify a deviation accuracy of testing result and reliability, can also ensure tested band be rolled into after product quality reliability high.
Describe embodiment of the present utility model by reference to the accompanying drawings above, but do not limit by above-described embodiment when realizing, those of ordinary skill in the art can make a variety of changes within the scope of the appended claims or revise.
Claims (3)
1. a photoelectric rectification sensor, it is characterized in that, comprise support, on support, laterally stationary cloth is equipped with three groups of identical photodetector unit side by side, often organize photodetector unit and comprise light source (10), a collimation lens (20) of directional light can be produced, No. two collimation lenses (30) of energy optically focused and photosensitive device (40), and the light source in same group of photodetector unit, a collimation lens, No. two collimation lenses and photosensitive device are arranged from top to bottom successively along a vertical straight line, light source arrangement is at the focus place of a collimation lens, a collimation lens is parallel just to layout with No. two collimation lenses, photosensitive device is arranged in the focus place of No. two collimation lenses, the voltage output end of each photosensitive device is connected on three voltage output interfaces (50) of photoelectric rectification sensor respectively one to one.
2. photoelectric rectification sensor according to claim 1, it is characterized in that, be locked at the edge of a collimation lens and be connected with extinction cover (60), the upper port sealing shroud stressed joint of upper extinction cover is on the lamp socket of light source, the lower ending opening bore of upper extinction cover is greater than the diameter of a collimation lens, be connected with some freedom upper flexible extinction curtain palpus (70) down at the lower ending opening edge that upper extinction overlaps, on every root, the length of flexible extinction curtain palpus is less than the level interval distance of lower port to a collimation lens edge of extinction cover; Be locked at the edge of No. two collimation lenses and be connected with lower extinction cover (90), the lower port sealing shroud stressed joint of lower extinction cover is on the mount pad of photosensitive device, the upper end open bore of lower extinction cover is greater than the diameter of No. two collimation lenses, be connected with some freedom lower flexible extinction curtain palpus (80) upward at the upper end open edge that lower extinction overlaps, under every root, the length of flexible extinction curtain palpus is less than the distance of upper port to the level interval at No. two collimation lens edges of lower extinction cover; Described flexible extinction curtain must low side end to described lower flexible extinction curtain palpus top between spacing be 1 to 3 times of tested thickness of strip.
3. photoelectric rectification sensor according to claim 2, it is characterized in that, also comprise directional beam generator (112) and light sensor (113), the outside surface of the upper and lower flexible extinction curtain palpus of the outside surface of upper flexible extinction curtain palpus is all pasted and is connected with reflective membrane, the directional beam (111) that directional beam generator sends is irradiated on light sensor after reflective membrane reflection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394039.1U CN204100995U (en) | 2014-07-16 | 2014-07-16 | Photoelectric rectification sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394039.1U CN204100995U (en) | 2014-07-16 | 2014-07-16 | Photoelectric rectification sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204100995U true CN204100995U (en) | 2015-01-14 |
Family
ID=52269414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420394039.1U Expired - Fee Related CN204100995U (en) | 2014-07-16 | 2014-07-16 | Photoelectric rectification sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204100995U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197840A (en) * | 2014-07-16 | 2014-12-10 | 中国计量学院 | Photoelectric correction sensor for variable semitransparent coiled material and detection method for same |
| CN112902841A (en) * | 2021-01-25 | 2021-06-04 | 上海兰宝传感科技股份有限公司 | Size measurement sensor with deviation correction function |
-
2014
- 2014-07-16 CN CN201420394039.1U patent/CN204100995U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104197840A (en) * | 2014-07-16 | 2014-12-10 | 中国计量学院 | Photoelectric correction sensor for variable semitransparent coiled material and detection method for same |
| CN104197840B (en) * | 2014-07-16 | 2017-03-01 | 中国计量学院 | A kind of photoelectric rectification sensor for variable translucent coiled material and its detection method |
| CN112902841A (en) * | 2021-01-25 | 2021-06-04 | 上海兰宝传感科技股份有限公司 | Size measurement sensor with deviation correction function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104197840A (en) | Photoelectric correction sensor for variable semitransparent coiled material and detection method for same | |
| CN103727876A (en) | Strip width and center measurement system and method based on parallel laser rays | |
| CN102023762A (en) | Optical multipoint touch screen and implementation method thereof | |
| CN102601131B (en) | A kind of billet surface quality on-line detecting device | |
| CN204100995U (en) | Photoelectric rectification sensor | |
| CN203616261U (en) | On-line visual detection equipment for voice diaphragm component appearance | |
| CN105486341A (en) | Large-format high-speed high-precision automatic optical detector | |
| CN206095585U (en) | Light detecting system and light detection device | |
| CN104297250A (en) | Yarn hairiness detection device | |
| CN106442560A (en) | Positioning measurement and defect detection method of display screen | |
| CN107153432A (en) | A kind of correction centering automatic control system based on digitized processing | |
| CN101603817B (en) | Glass thickness detection device and method | |
| CN203396719U (en) | Substrate detection device | |
| CN202533384U (en) | Defect detection system applied in battery diaphragm preparation process | |
| CN106483583A (en) | The alignment system of electronic tag, method and electronic tag survey meter | |
| CN205373652U (en) | Simple and easy CCD measures fiber diameter device | |
| CN204287068U (en) | For detecting the substrate imperfection pick-up unit of light-permeable base material | |
| CN204203106U (en) | A kind of Yarn filoplume pick-up unit | |
| CN205301075U (en) | Survey impact specimen fracture fibre section rate system | |
| CN208887665U (en) | A kind of photoelectric sensor test device | |
| CN201903867U (en) | Optic multipoint touch screen | |
| CN204479028U (en) | A kind of unidirectional split type filament laser diameter measuring instrument | |
| CN208187965U (en) | A kind of fiber reflection formula light path detecting device | |
| CN204189029U (en) | Shine upon direction detection device | |
| CN102236475B (en) | Touch positioning method and device, touch screen and display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20150114 Termination date: 20170716 |