CN109974589A - Transmission-type photoelectric sensor - Google Patents
Transmission-type photoelectric sensor Download PDFInfo
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- CN109974589A CN109974589A CN201811454277.6A CN201811454277A CN109974589A CN 109974589 A CN109974589 A CN 109974589A CN 201811454277 A CN201811454277 A CN 201811454277A CN 109974589 A CN109974589 A CN 109974589A
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- 230000003287 optical effect Effects 0.000 claims abstract description 95
- 238000006073 displacement reaction Methods 0.000 claims abstract description 10
- 238000003708 edge detection Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 2
- QFTYEBTUFIFTHD-UHFFFAOYSA-N 1-[6,7-dimethoxy-1-[1-(6-methoxynaphthalen-2-yl)ethyl]-3,4-dihydro-1H-isoquinolin-2-yl]-2-piperidin-1-ylethanone Chemical compound C1=CC2=CC(OC)=CC=C2C=C1C(C)C(C1=CC(OC)=C(OC)C=C1CC1)N1C(=O)CN1CCCCC1 QFTYEBTUFIFTHD-UHFFFAOYSA-N 0.000 description 13
- 238000005259 measurement Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/08—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
- G01J2001/4446—Type of detector
- G01J2001/4473—Phototransistor
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- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of transmission-type photoelectric sensor is provided, the adjustment operation of light projector and the optical axis of optical receiver can be simplified.A kind of transmission-type photoelectric sensor, comprising: light projector is fixed on light projector side setting face using fixed cell, and exports the linear light of the one-dimensional square along light projector side setting face；Optical receiver, it is fixed on using fixed cell is arranged face along the optical receiver side extended with light projector side setting face the same face direction, and the deviation linear light exported from light projector is used in the light receiving element that can receive light with the unidirectional one-dimensional square of the linear light and receives the linear light；And controller, its displacement that the checked property between light projector and optical receiver is detected based on the light-receiving level of the linear light received with light receiving element, in transmission-type photoelectric sensor, light receiving element have can receive light region, it includes the light projection width of the linear light exported from light projector, and more wider than the light projection width.
Description
Technical field
The present invention relates to a kind of transmission-type photoelectric sensors comprising for example exports the light projector of laser and receives from light
The optical receiver of the light of projector output.
Background technique
Transmission-type photoelectric sensor has the light projector of output laser and receives the optical receiver of laser as sensing
Device head.Moreover, light projector and optical receiver are opposite disposed, pass through the laser using controller detection at optical receiver
Light-receiving level, to detect the displacement of checked property.
In optical projection component of the light projector equipped with output laser and the light projected from optical projection component is transformed to line
Shape, that is, one-dimensional square lens, the box body of the light projector are screwed in setting face.At optical receiver, in one-dimensional square
Equipped with the CMOS as light receiving element, the box body of the optical receiver is screwed in setting face.
At this point, light projector and optical receiver are fixed on setting face, so that photocell and light receiving element
Extend opposite one another and to same direction.
Moreover, by receiving the laser exported from light projector in optical receiver, and optical receiver is judged with controller
Light-receiving level, thus detection between light projector and optical receiver transported checked property displacement.
As the prior art similar with such transmission-type photoelectric sensor, it is known to patent document 1,2.
Existing technical literature
Patent document
Patent document 1: Japanese Unexamined Patent Publication 2008-275462
Patent document 2: Japanese Unexamined Patent Publication 2016-151543
Summary of the invention
The technical problem to be solved by the invention
In transmission-type photoelectric sensor as described above, it is necessary to so that the light projection of the laser exported from light projector
Width is located at the mode that can be received in light region within the scope of the i.e. setting of light receiving unit of optical receiver for light projector
And optical receiver is fixed on setting face.When optical receiver can receive light region from light projection width deviate when, can not
Normally detect the displacement of checked property.
When light projector and optical receiver are fixed on setting face, light is being located at the light projection width of light projector
In the state that the mode that can be received in light region of receiver has carried out optical axis adjustment, light projector and optical receiver are used
Screw is fixed on setting face.
However, because there are the feelings that the optical axis of light projector and optical receiver deviates in one-dimensional square when being screwed
Condition, and in this case it is necessary to re-start optical axis adjustment, so optical axis adjustment operation is many and diverse.
In patent document 1,2, although disclosing the structure of the optical axis deviation of detection transmission-type photoelectric sensor, not
The function of open amendment optical axis deviation.
The invention is to complete in light of this situation, and its purpose is to provide a kind of transmission-type photoelectric sensors, this is thoroughly
Emitting photoelectric sensor can simplify the adjustment operation of light projector and the optical axis of optical receiver.
For technical means to solve problem
The transmission-type photoelectric sensor to solve the above problems, has: light projector is fixed on using fixed cell
Face is arranged in light projector side, and the linear light of the one-dimensional square in face is arranged along the light projector side for the light projector output；Light
Receiver is fixed on along the light extended with light projector side setting face the same face direction using fixed cell
Face is arranged in receiver-side, and the optical receiver has light receiving element, and the light receiving element has and can will throw from the light
Linear light edge and the received multiple light receiving units of the unidirectional one-dimensional square of the linear light of emitter output, are connect by the light
It receives element and receives the linear light；And controller, the light-receiving based on the linear light received with the light receiving element
Level detects the displacement of the checked property between the light projector and the optical receiver, the transmission-type photoelectric transfer
Sensor is characterized in that, the light receiving element has and can receive light region, and the light region that can receive includes from described
The light projection width of the linear light of light projector output, and it is more wider than the light projection width.
Using the structure, the permission of the optical axis deviation to light projector and optical receiver is improved.
Additionally, it is preferred that being, in above-mentioned transmission-type photoelectric sensor, the controller has the first setup unit, institute
The first setup unit is stated from the light detected more than with reference level in light region can be received described in the light receiving element
Level is received to receive the optical receiving region of the linear light, and the range based on the optical receiving region and the range preset
To set effective coverage.
According to this structure, it is able to suppress to be incident on other than effective coverage in execution pattern and can receive the dry of light region
Disturb the influence of light.
Additionally, it is preferred that in above-mentioned transmission-type photoelectric sensor, the controller has the second setup unit, described the
Two setup units adjust the range of the effective coverage.
According to this structure, as needed, relatively narrow by the way that effective coverage AR2 to be set to, and can be improved to light projector 1
With the permission of the deviation of the optical axis of optical receiver 2.
Additionally, it is preferred that in above-mentioned transmission-type photoelectric sensor, the controller has: edge detection unit, inspection
Survey the edge of the optical receiving region；And third setup unit, be set as the edge that will test from it is described effectively
Region removes.
According to this structure, the edge of optical receiving region can be removed from effective coverage.
Additionally, it is preferred that in above-mentioned transmission-type photoelectric sensor, the controller has wrong display unit, the mistake
Mistake is shown when missing display unit in the range of the effective coverage does not fall within the optical receiving region.
According to this structure, in the case where effective coverage, which is deviateed, can receive light region, due to wrong in display screen display
Accidentally, so the mistake of effective coverage is inhibited to set.
Additionally, it is preferred that in above-mentioned transmission-type photoelectric sensor, the optical receiver has light-receiving window, and the light connects
It receives window and the linear light is included in and is supplied to the light receiving element, the center phase of the one-dimensional square of the light receiving element
For the off-centring of the one-dimensional square of the light-receiving window, the controller is from positioned at the end with the light-receiving window
The light receiving element being closer an end the light receiving unit rise sequential read out light receiving signal.
According to this structure, in execution pattern, when reading light-receiving level from each unit of light receiving element, due to being
Light-receiving level is sequential read out from being located at the light receiving unit with the end of the side being closer at the center of light-receiving window,
So shortening the time needed for the light-receiving level for reading effective coverage.In addition, reading effective coverage because can omit
Signal receive level after slave each unit read light-receiving level process, therefore can also shorten repetition read when reading when
Between.
Invention effect
Transmission-type photoelectric sensor according to the present invention, can be by the adjustment operation of light projector and the optical axis of optical receiver
Simplify.
Detailed description of the invention
Fig. 1 is the perspective view for showing transmission-type photoelectric sensor.
Fig. 2 is the perspective view for showing optical receiver.
Fig. 3 is the perspective view for showing the light receiving element in optical receiver.
Fig. 4 is the main view for showing controller.
Fig. 5 is the block diagram for showing the electrical structure of transmission-type photoelectric sensor.
Fig. 6 is the flow chart for showing the movement of transmission-type photoelectric sensor.
Fig. 7 is the explanatory diagram for showing the light-receiving level detected with light receiving element.
Fig. 8 is the explanatory diagram for showing the set action of effective coverage.
Fig. 9 is the explanatory diagram for showing the set action of effective coverage.
Symbol description
1 light projector, 2 optical receivers, 3 controllers (the first setup unit, the second setup unit, third setup unit, side
Edge detection unit, mistake display unit), 8 light-receiving windows, 9 light receiving elements, 11 wrong display units (display screen), L linear light
(laser), ARp can receive light region, AR1 optical receiving region, the effective coverage AR2, A light projection width, RL light-receiving level, S
Reference level, the edge EG.
Specific embodiment
Hereinafter, illustrating an embodiment of transmission-type photoelectric sensor with reference to the accompanying drawings.
Transmission-type photoelectric sensor shown in FIG. 1 has light projector 1, optical receiver 2 and controller 3.Light projector 1
Has the box body 4,5 of outer dimension having the same respectively with optical receiver 2.Box body 4,5 is for example with a thickness of the rectangular of 10mm
Body is formed, and has the mounting hole 6 for penetrating through box body 4,5 in thickness direction in the corner of the diagonal position of the interarea of the cuboid.
Moreover, using the screw of insert mounting hole 6, and by a side of the thickness direction of box body 4,5 (one of interarea) 4a, 5a points
Mounting surface is not fixed on it.By the fixed light projector side setting face of box body 4,5 and optical receiver side setting face be to be formed it is same
The plane of a part in face.
At the box body 4 of light projector 1, a side in the side orthogonal with side 4a, longitudinal direction is formed
There is light projection window 7.Light projection window 7 is open along the longitudinal direction of box body 4 as rectangle.In addition, from the side orthogonal with side 4a
In, a side of short side direction is extended cable 4b, and the cable is connect with controller 3.
In the box body 4 of light projector 1, the optical projection component of laser is exported along the longitudinal in one-dimensional square of light projection window 7
To abreast being carried.Moreover, laser (linear light) L of the one-dimensional square exported from optical projection component is emitted from light projection window 7.
As shown in Fig. 2, at the box body 5 of optical receiver 2, in the side orthogonal with side 5a, longitudinal direction one
A side is formed with light-receiving window 8.Light-receiving window 8 is with size identical with light projection window 7 and shape, along the vertical of box body 5
To being open as rectangle.In addition, being extended from a side in the side orthogonal with side 5a, short side direction has electricity
Cable 5b, and the cable is connect with controller 3.
Moreover, light projector 1 and optical receiver 2 are fixed on setting face using screw or other fixed cells, so that
Light projection window 7 and light projection window 8 are opposite one another.
As shown in figure 3, the light receiving element 9 for receiving laser is pacified along light-receiving window 8 in the box body 5 of optical receiver 2
Dress.Light receiving element 9 is for example by Complementary Metal Oxide Semiconductor (CMOS) (complementary metal oxygen
Compound semiconductor) it constitutes.The light region ARp that can receive that the light receiving element 9 of laser can be received is formed to compare light-receiving
Longitudinal width of window 8 is wider, and this can receive longitudinally central position X and the longitudinal direction of light-receiving window 8 of light region ARp
Center Y is inconsistent.In Fig. 3, the longitudinally central position X that can receive light region ARp is more longitudinally central than light-receiving window 8
Offset below Y-direction, and the distance between an end 9a (being upper end in Fig. 3) for light receiving element 9 and the upper end of light-receiving window 8
D1 is shorter than the distance between the lower end of another end 9b of light receiving element 9 (being lower end in Fig. 3) and light-receiving window 8 D2.
Light receiving element 9 is connect with optical receiving circuit (not shown), which passes through flexible cable 26, connector
27 and connect with cable 5b.The light receiving signal of light receiving element 9 is exported by cable 5b to controller 3.
As shown in figure 4, the front surface in the box body 10 of the rectangular shape of controller 3 is provided with display screen 11, left button
12, right button 13, upper key 14, down key 15, enter key 16, ESC Escape 17, preset key 18, output display lamp 19a~19c and input are aobvious
Show lamp 20a and default display lamp 20b.
Left button 12, right button 13, upper key 14, down key 15, enter key 16, ESC Escape 17, preset key 18 are carrying out various settings
In the case where use.It exports display lamp 19a~19c and inputs display lamp 20a, presets the defeated of display lamp 20b display controller 3
Enter output state, the execution for showing setting content when screen 11 shows setting mode, being detected to the displacement of checked property
Measurement situation or mistake display when mode etc..
Cable 28 is connected in a longitudinal side for the box body 10 of controller 3.Cable 28 will from light projector 1 and
Optical receiver 2 extended cable 4b, 5b, which collect, is connected to controller 3, light projector 1 and optical receiver 2 and controller 3
Electrical connection.
Fig. 5 shows the electrical structure of light projector 1, optical receiver 2 and controller 3.The light projection unit of light projector 1
21 driving portions with laser diode and laser diode, the light receiving unit 22 of optical receiver 2, which has, is used as light-receiving
The CMOS of element 9 and the output section for exporting the reception signal of light receiving element 9 to CPU23.
CPU23 is built-in in controller 3 and is provided with display unit 24 and operation portion 25.Display unit 24 includes display screen
11 and each display lamp 19a~19c, 20 and these components driving portion, operation portion 25 include each key 12~18.
CPU23 is based on preset program and is acted, will be in the setting that set in setting mode with operation portion 25
Hold and shown in display unit 24, and light projection unit 21 is driven to export laser L.Moreover, the light-receiving based on light receiving unit 22
Signal carries out set action.
In addition, driving light projection unit 21 to export laser L in execution pattern, and the light based on light receiving unit 22 connects
It collects mail and number judges the measurement result of checked property, and the judging result is shown in display unit 24.
Then, illustrate the effect of transmission-type photoelectric sensor being configured as described above.
Fig. 6, which is shown, is arranged in setting position and process until starting measurement movement for transmission-type photoelectric sensor.
It is screwed after position is set and is connect with controller 3 in light projector 1 and optical receiver 2, when
When connecting the power supply of transmission-type photoelectric sensor, optical axis adjustment processing (step 1) is carried out first.Optical axis adjustment processing judges that light is thrown
Whether each optical axis of emitter 1 and optical receiver 2 suitable, be adjusted operation in inappropriate situation so that each optical axis position
Become suitable.
Then, reference waveform login process (step 2) is carried out.In the setting of light projector 1 and optical receiver 2 or again
When setting, reference waveform login process carries out the setting etc. of the threshold value, filter value of light-receiving level.
Then, the selection (step 3) of execution pattern (measurement pattern) is being carried out, and is carrying out the selection of measurement direction
(step 4) later starts the measurement movement for detecting the displacement of checked property.
Then, the optical axis adjustment processing of step 1 is illustrated.
In Fig. 7, the laser L projected from light projector 1 is by light projection window 7 and light-receiving window 8 and by light receiving element 9
It receives.Laser L as the one-dimensional square of light projection width A laser and be received in light receiving element 9.
Light receiving element 9 has CMOS (the multiple column of unit one settings), as described above in the longitudinal direction than light-receiving window 8
Width broader can receive the laser L that one-dimensional square can be received in the Arp of light region.
The light-receiving level RL that light receiving element 9 is formed by laser L is produced in the i.e. edge EG in the both ends of light projection width A
It is raw that caused noise NPL is analyzed by Fresnel.If containing noise NRL in light-receiving level RL, when the position of detection checked property
When shifting, there is the possibility that cannot normally detect.
Therefore, it is necessary to which region in the optical receiving region AR1 of light receiving element 9, not generating noise NRL is set as
Effective coverage AR2, and detect based on the light-receiving level RL of the effective coverage AR2 displacement of checked property.
When optical axis, which adjusts processing, to be started, CPU23 exports laser L from light projector 1, and judges from optical receiver 2
The light-receiving level RL for the reception signal that light receiving element 9 exports.At this point, light-receiving level RL is by from the one of light receiving element 9
End side, upper end side i.e. in Fig. 3 unit sequential read out.
As shown in figure 8, then, CPU23 connects the light of the reception signal sequential read out from multiple units of light receiving element 9
It receives level RL to be compared with preset reference level S, obtains being set as H when light-receiving level RL is higher than reference level S
The comparison result signal CR of level.Comparison result signal CR is shown in the unit that can receive light region ARp of light receiving element 9
, unit at the region for having received the laser L from light projector 1, CPU23 recognizes this as optical receiving region AR1.
In addition, light-receiving level RL shown in Fig. 8 is electric by the light-receiving of the reception signal sequential read out from light receiving element 9
It is flat to show from left to right.
Then, CPU23 determines that light-receiving level RL is more than the cell position P1 of reference level S, and determines from cell position
P1 acts the cell position P2 for separating X1 unit of preset predetermined quantity.
Moreover, determining the cell position P3 for being further spaced from X2 unit of predetermined quantity from cell position P2, and will be single
Region between first position P2 and cell position P3 is set as effective coverage AR2.Moreover, if the comparison result of cell position P3 is believed
Number CR is H level, then it is normal that CPU23, which is identified as the setting of effective coverage AR2, and shows " OK " in display screen 11.
Conversely, as shown in figure 9, being identified as effectively in cell position P3 from the case where capable of receiving light region ARp disengaging
The setting of region AR2 is abnormal, and shows " ERR " in display screen 11.
In addition, CPU23 has range, the i.e. unit for arbitrarily setting effective coverage AR2 before above-mentioned optical axis adjustment processing
The function of quantity.
When pressing the ESC Escape 17 of controller 3, CPU23 goes to setting mode, and shows " SET " in display screen 11.
Then, CPU23 shows the unit number of the effective coverage AR2 set now, i.e. above-mentioned predetermined quantity X2.From this
When operating upper key 14 or down key 15 under state, then increase and decrease predetermined quantity X2.
Moreover, when pressing enter key 16, CPU23 will newly be set after predetermined quantity X2 is set as desired quantity
Fixed predetermined quantity X2 makes predetermined quantity X2 flash several seconds and show on display screen 11 as effective coverage AR2
The predetermined quantity X2 having determined that.
Then, CPU23 carries out the display of " SET " on display screen 11 again, when pressing ESC Escape 17 in this state,
Back to execution pattern.In addition, being re-introduced into setting mode when pressing enter key 16.
In such as above-mentioned transmission-type photoelectric sensor, effect as shown below can be obtained.
(1) due to, the institute more wider than the light projection width A of light projector 1 that can receive light region ARp of light receiving element 9
With when light projector 1 and optical receiver 2 are fixed on mounting surface with screw, even if making light since it fixes the deviation of position
The optical axis of projection element and light receiving element 9 has deviation in the one-dimensional square of the extension of optical projection component and light receiving element 9,
Light projection width A be also easy to fall in light receiving element 9 can receive light region ARp in the range of.Therefore can reduce must
Carry out the adjusting again of the fixation position of light projector 1 and optical receiver 2, i.e. a possibility that adjustment again of optical axis.
(2) in the mode of setting, can swash in the light receiving element 9 of optical receiver 2 what is exported from light projector 1
In the range of the optical receiving region AR1 light-receiving level RL of light L bigger than reference level S, preset range is set
For effective coverage AR2.Moreover, because tested to detect based on the light-receiving level RL of effective coverage AR2 in execution pattern
The displacement of object is looked into, so the shadow of the interference light that can be received in the Arp of light region other than the AR2 of effective coverage can be prevented from being incident on
The error detection of checked property caused by ringing.
(3) width of effective coverage AR2 can arbitrarily be set.As needed, by effective coverage AR2 is arranged compared with
It is narrow, and improve the tolerance of the deviation to the fixation position of light projector 1 and optical receiver 2.Therefore, it can further decrease
It must carry out a possibility that the adjustment again of fixation position of light projector 1 and optical receiver 2.
(4) it in the setting of effective coverage AR2, determines from light-receiving level RL is less than reference level S to reaching benchmark
The cell position P1 of level S, and determine the cell position P3 that the unit of predetermined quantity X2 is further spaced from from cell position P2,
Cell position P2 separates the unit of preset predetermined quantity X1 from cell position P1.Moreover, because by cell position
Region between P2 and cell position P3 is set as effective coverage AR2, so can be by the edge EG of optical receiving region AR1 from having
Region AR2 is imitated to remove.Therefore, in execution pattern, the influence of the noise NRL generated in edge EG can be removed, so as to
Enough improve the inspection precision of checked property.
(5) in the setting of effective coverage AR2, there are light-receiving level RL at the effective coverage AR2 that will be set not
In the case where reaching the cell position of reference level S or in the case that AR2 disengaging in effective coverage can receive light region ARp, energy
It is enough to show mistake in display screen 11.Therefore, it is able to suppress the mistake setting of effective coverage AR2.
(6) the longitudinally central position X that can receive light region ARp of light receiving element 9 is displaced to and light-receiving window 8
Longitudinally central Y inconsistent position, the end 9a that can receive light region ARp and light-receiving window 8 of light receiving element 9
The distance between the end of the end side 9a D1 than another end 9b of light receiving element 9 and the end side 9b of light-receiving window 8
The distance between end D2 it is short.Therefore, in execution pattern, light-receiving level is being read from each unit of light receiving element 9
When RL, light-receiving level RL is sequential read out from the end 9a for the side of the center Y with light-receiving window 8 being closer, so energy
Time needed for until enough light-receiving level RL shortened until reading effective coverage AR2.
In addition, above embodiment can also change as follows.
Light projector 1 and optical receiver 2 can also be fixed on setting face by the fixed cell other than screw.
The light exported from light projector 1 is also possible to the light other than laser.
Also two-dimentional CMOS can be used as light receiving element 9.In this case, the one-dimensional of threadiness can also be used only
Region.
The linear light exported from optical projection component not only includes one-dimensional light, also comprising band-like with minute widths
Light.
The display of " OK " " ERR " can be by other texts, symbol, and label etc. is shown, can also pass through instruction
Lamp is lighted, is flashed, showing the variation of color etc. to show.
The outer dimension of light projector 1 and optical receiver 2 can not also be identical.
Claims (6)
1. a kind of transmission-type photoelectric sensor, has:
Light projector is fixed on light projector side setting face using fixed cell, and the light projector output is along institute
State the linear light of the one-dimensional square in light projector side setting face；
Optical receiver is fixed on using fixed cell and is set along with light projector side setting face the same face direction extension
The optical receiver side setting face set, the optical receiver have a light receiving element, and the light receiving element has can will be from institute
Linear light edge and the received multiple light receiving units of the unidirectional one-dimensional square of the linear light for stating light projector output, pass through
The light receiving element receives the linear light；And
Controller is detected based on the light-receiving level of the linear light received with the light receiving element positioned at the light
The displacement of checked property between the projector and the optical receiver, the transmission-type photoelectric sensor be characterized in that,
The light receiving element has and can receive light region, and the light region that can receive includes to export from the light projector
The linear light light projection width, and it is more wider than the light projection width.
2. transmission-type photoelectric sensor as described in claim 1, which is characterized in that
The controller has the first setup unit, and first setup unit described in the light receiving element from can receive
The light-receiving level more than with reference level is detected in light region to receive the optical receiving region of the linear light, and is based on the light
The range of receiving area and the range preset set effective coverage.
3. transmission-type photoelectric sensor as claimed in claim 2, which is characterized in that
The controller has the second setup unit, and second setup unit adjusts the range of the effective coverage.
4. transmission-type photoelectric sensor as claimed in claim 2 or claim 3, which is characterized in that
The controller has:
Edge detection unit detects the edge of the optical receiving region；And
Third setup unit, the edge for being set as will test are removed from the effective coverage.
5. transmission-type photoelectric sensor as claimed in claim 2 or claim 3, which is characterized in that
The controller has wrong display unit, and the mistake display unit does not fall within the light in the effective coverage and connects
Mistake is shown when in the range of receipts region.
6. transmission-type photoelectric sensor according to any one of claims 1 to 3, which is characterized in that
The optical receiver has light-receiving window, and the linear light is included in and is supplied to the light-receiving member by the light-receiving window
Part,
Center of the center of the one-dimensional square of the light receiving element relative to the one-dimensional square of the light-receiving window
Offset,
The controller is from positioned at an end with the light receiving element of the end of the light-receiving window being closer
The light receiving unit at place rises and sequential reads out light receiving signal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017251636A JP2019117130A (en) | 2017-12-27 | 2017-12-27 | Translucent photoelectric sensor |
| JP2017-251636 | 2017-12-27 |
Publications (2)
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| CN101871770A (en) * | 2009-04-24 | 2010-10-27 | 株式会社其恩斯 | Transmissive dimension measuring device |
| CN205561758U (en) * | 2016-02-19 | 2016-09-07 | 深圳市意普兴科技有限公司 | Infrared measurement device |
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| JPS6461603A (en) * | 1987-09-02 | 1989-03-08 | Mitsubishi Heavy Ind Ltd | Method and device for detecting camber of beltlike body |
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| JP2002335006A (en) * | 2001-05-09 | 2002-11-22 | Toshiba Corp | Reflection optical sensor |
| JP2009002701A (en) * | 2007-06-19 | 2009-01-08 | Yamatake Corp | Edge detector and line sensor for edge detector |
| JP5507895B2 (en) * | 2009-06-09 | 2014-05-28 | 株式会社キーエンス | Transmission type measuring device |
| CZ2010423A3 (en) * | 2010-05-28 | 2010-08-18 | Perner@Petr | Method and apparatus for continuous detection of thickness and/or homogeneity of a linear configuration, especially textile fiber |
| JP6285376B2 (en) | 2015-02-19 | 2018-02-28 | アズビル株式会社 | Edge detection device |
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| JPH0583981U (en) * | 1992-04-20 | 1993-11-12 | 竹中エンジニアリング株式会社 | Reflective photoelectric switch |
| JPH10239024A (en) * | 1997-02-26 | 1998-09-11 | Omron Corp | Optical measuring device |
| JP2008275462A (en) * | 2007-04-27 | 2008-11-13 | Omron Corp | Positional dimension measuring device |
| JP2010237167A (en) * | 2009-03-31 | 2010-10-21 | Sunx Ltd | Photoelectric sensor |
| CN101871770A (en) * | 2009-04-24 | 2010-10-27 | 株式会社其恩斯 | Transmissive dimension measuring device |
| CN205561758U (en) * | 2016-02-19 | 2016-09-07 | 深圳市意普兴科技有限公司 | Infrared measurement device |
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| JP2019117130A (en) | 2019-07-18 |
| KR102045688B1 (en) | 2019-11-15 |
| KR20190079505A (en) | 2019-07-05 |
| CN109974589B (en) | 2021-04-23 |
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