CN109612506B - U-shaped diffuse reflection photoelectric sensor - Google Patents
U-shaped diffuse reflection photoelectric sensor Download PDFInfo
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- CN109612506B CN109612506B CN201811324568.3A CN201811324568A CN109612506B CN 109612506 B CN109612506 B CN 109612506B CN 201811324568 A CN201811324568 A CN 201811324568A CN 109612506 B CN109612506 B CN 109612506B
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- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/28—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication
- G01D5/30—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with deflection of beams of light, e.g. for direct optical indication the beams of light being detected by photocells
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Abstract
A U-shaped diffuse reflectance photoelectric sensor comprising: a moving track, a light emitting center, a light receiving center and a light receiving diode; the light emitting center is fixed at one end of the moving track, the light receiving center is fixed on the moving track through a fixing screw, and the light receiving diode is arranged on the side face of one end, close to the light emitting center, of the light receiving center. Has the advantages that: according to the U-shaped diffuse reflection photoelectric sensor provided by the invention, the light emitting center and the light receiving center are separately designed, and the light receiving center receiving surface is designed on the side surface of the light receiving center close to one end of the light emitting center, so that the influence of dust accumulation on the light receiving center receiving surface is effectively reduced, and the sensitivity of the photoelectric sensor is further improved.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a U-shaped diffuse reflection photoelectric sensor.
Background
The perception sensor that uses at present at the production line formula photoelectric sensor as an organic whole, its constitution includes luminous center, photic center, detection circuitry: the light emitting center includes a light source emitter that emits a light beam directed at a target, the emitted light beam typically originating from a semiconductor light source, a Light Emitting Diode (LED) and a laser diode; the beam is emitted without interruption, or the pulse width is changed; the light receiving center is a receiver and consists of a photodiode or a photoelectric triode; in front of the receiver, optical elements such as lens and aperture are arranged; a detection circuit capable of filtering out the valid signal and applying the signal.
The existing integrated sensor integrates the emitter and the receiver, when an object to be detected passes through, the object reflects the light emitted by the luminous center to the receiver of the luminous center, and then the photoelectric switch generates a switching signal. The emitting surface and the receiving surface of the integrated sensor are upward surfaces, and dust accumulation is easy to occur after long-time use, so that the receiving surface is weak in receiving light or missenses. On the other hand, the receiving surface of the sensor is small, the light receiving quantity is small, and the sensing sensitivity of the sensor is small.
In summary, in the conventional integrated sensor, since the emitter and the receiver are integrated together and the emitting surface and the receiving surface are both upward surfaces, dust is easily accumulated during long-term use, and further the received light on the receiving surface is weak or missensed.
Disclosure of Invention
The invention provides a U-shaped diffuse reflection photoelectric sensor which can protect a via hole structure corresponding to frame glue from being short-circuited due to water vapor corrosion, and solves the technical problem that the receiving light of a receiving surface is weak or the receiving light is sensed wrongly due to the fact that a transmitter and a receiver are integrated together and emitting and receiving surfaces face upward surfaces easily due to the fact that dust is accumulated in the long-time use process of the existing integrated sensor.
In order to solve the above problems, the technical scheme provided by the invention is as follows:
the invention provides a U-shaped diffuse reflection photoelectric sensor, comprising: the light receiving device comprises a moving track, a light emitting center, a light receiving center and a light receiving diode;
the light emitting center is fixed at one end of the moving track, the light receiving center is fixed on the moving track through a fixing screw, and the light receiving diode is arranged on the side face of one end, close to the light emitting center, of the light receiving center.
According to a preferred embodiment of the present invention, the light source emitter is disposed at an upper end edge of the light emitting center close to the light receiving center.
According to a preferred embodiment of the present invention, the light source emitter is a light emitting diode.
According to a preferred embodiment of the present invention, an indicator lamp is disposed at a central position of an upper surface of the light receiving center.
According to a preferred embodiment of the present invention, the height of the light emitting center is the same as the height of the light receiving center.
According to a preferred embodiment of the present invention, the moving rail is provided with a fixing screw hole.
According to a preferred embodiment of the present invention, the width of the fixing screw hole is greater than the diameter of the fixing screw, and the length of the fixing screw hole is less than the length of the moving rail.
According to a preferred embodiment of the present invention, the surface of the moving track is provided with a scribing scale.
According to a preferred embodiment of the present invention, a base is disposed on a lower surface of the moving rail, and the base and the moving rail are integrally formed.
According to a preferred embodiment of the present invention, two fixing screw hole sites are provided on the base.
The invention has the beneficial effects that: according to the U-shaped diffuse reflection photoelectric sensor provided by the invention, the light emitting center and the light receiving center are separately designed, and the light receiving center receiving surface is designed on the side surface of the light receiving center close to one end of the light emitting center, so that the influence of dust accumulation on the light receiving center receiving surface is effectively reduced, and the sensitivity of the photoelectric sensor is further improved.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a prior art integrated photoelectric sensor.
Fig. 2 is a schematic diagram of the working principle of the prior art integrated photoelectric sensor.
Fig. 3 is a schematic structural view of a U-shaped diffuse reflection photoelectric sensor according to the present invention.
Fig. 4A is a schematic diagram of the working principle of the U-shaped diffuse reflection photoelectric sensor with the sensing height h 1.
Fig. 4B is a schematic diagram of the working principle of the U-shaped diffuse reflection photoelectric sensor when the sensing height is h 2.
Fig. 5 is a schematic diagram of the working principle of the U-shaped diffuse reflection photoelectric sensor of the present invention when the U-shaped diffuse reflection photoelectric sensor includes a scale.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. The directional terms mentioned in the present invention, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], are only referring to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention. In the drawings, elements having similar structures are denoted by the same reference numerals.
The invention aims at the technical problems that the existing integrated sensor is easy to accumulate dust in the long-time use process and further causes the weak received light of the receiving surface or the false perception because the emitter and the receiver are integrated together and the emitting surface and the receiving surface are upward surfaces, and the embodiment can solve the defect.
As shown in fig. 1, the structure of the integrated photoelectric sensor in the prior art is schematically illustrated, and includes an emitting light center 101, a receiving light center 102, and a base 103, where the emitting light center 101, the receiving light center 102, and the base 103 are designed as an integrated body; the light emitting center 101 and the light receiving center 102 are respectively provided with a fixing screw hole 104; a light emitting diode 105 is arranged on the upper surface of the light emitting center 101, and a light receiving diode 106 is arranged on the upper surface of the light receiving center 102; the detection circuit is located inside the light emitting center 101 and the light receiving center 102.
Wherein the emitting light center 101 emits a light beam through the light emitting diode 105 toward a target, and the light receiving center 102 receives the light beam emitted from the light emitting diode 105 through the light receiving diode 106.
Fig. 2 is a schematic diagram illustrating the operation principle of the integrated photoelectric sensor in the prior art. Wherein the integrated photoelectric sensor 10 integrates the emitting light center 101 and the receiving light center 102, when the object to be detected passes through, the object reflects the light emitted from the emitting light center 101 to the receiver of the receiving light center 102, and the photoelectric switch generates a switch signal. The emitting and receiving surfaces of the integrated photoelectric sensor 10 are upward-facing surfaces, and dust is easy to accumulate after long-term use, so that the receiving surface is weak in receiving light or missensed. On the other hand, the receiving surface of the integrated photoelectric sensor 10 is generally small, the light receiving quantity is small, and the sensing sensitivity of the sensor is small.
As shown in fig. 3, the present invention provides a U-shaped diffuse reflection photoelectric sensor, including: a moving track 301, a light emitting center 302, a light receiving center 303, and a light receiving diode 304; the light emitting center 302 is fixed at one end of the moving track 301, the light receiving center 303 is fixed on the moving track 301 by a fixing screw 305, and the light receiving diode 304 is disposed at a side of the light receiving center 303 close to the one end of the light emitting center 302.
Specifically, firstly, a moving track 301 is provided, a base 306 is arranged on the lower surface of the moving track 301, and the base 306 and the moving track 301 are integrally formed; the base 306 is provided with two fixing screw hole sites 307. The base 306 can be fixed to the front of the experiment table through the fixing screw hole 307 using the fixing screw 305.
Specifically, the light emitting center 302 is fixed at one end of the upper surface of the moving track 301, and a light source emitter 308 is disposed at the edge of the light emitting center 302 near the upper end of the light receiving center 303. The light source emitter 308 emits a light beam that is generally derived from a semiconductor light source, a Light Emitting Diode (LED), and a laser diode; the light beam emitted by the light source emitter 308 is emitted without interruption; the light beam emitted by the light source emitter 308 can also vary in pulse width; the light source emitter 308 is preferably a light emitting diode.
Specifically, the light receiving center 303 is further disposed on the upper surface of the moving rail 301, the light receiving center 303 is fixed to the moving rail 301 by a fixing screw 305, and the light receiving diode 304 is disposed on a side surface of the light receiving center 303 close to one end of the light emitting center 302. The light receiving center 303 is composed of a photodiode or a phototriode; in front of the light receiving center 303, an optical element lens, an aperture, and the like are mounted. An indicator lamp 309 is disposed at the center of the upper surface of the light receiving center 303. The height of the emitting light center 302 is the same as the height of the receiving light center 303. The light emitting center 302 and the light receiving center 303 are separately designed, and the light source emitter 308 on the light emitting center 302 emits light at a certain angle, so that the light does not directly irradiate on the light receiving diode 304, and false sensing is not caused. The light receiving diode 304 is arranged on the side surface of the light receiving center 303, the area of the part is large, a light receiving surface can be increased, the sensitivity of the sensor is effectively increased, and the part is positioned on the side surface, so that dust accumulation can be effectively reduced according to the influence of gravity, and the problem of error sensing of the sensor is caused.
Specifically, the moving rail 301 is provided with a fixing screw hole; the width of the fixing screw hole is greater than the diameter of the fixing screw 305, and the length of the fixing screw hole is less than the length of the moving rail 301. The light receiving center 303 may be fixed on the moving rail 301 through the fixing screw hole using the fixing screw 305. The light receiving center 301 can move on the moving rail 301, and the sensing height of the sensor can be adjusted by moving the light receiving center 303.
As shown in fig. 4A, the schematic diagram of the operating principle of the U-shaped diffuse reflection photoelectric sensor of the present invention when the sensed height is h1 is shown. At this time, the distance from the light receiving center 303 to the light emitting center 302 is L1. When the light source emitter 308 on the emitting light center 302 of the U-shaped diffuse reflection photoelectric sensor 30 emits a certain angle light, and the display panel 20 starts to pass through the area above the U-shaped diffuse reflection photoelectric sensor 30, the angle light emitted by the light source emitter 308 is reflected at the bottom of the display panel 20, the reflected light irradiates the surface of the light receiving diode 304, and the photoelectric switch of the light receiving diode 304 generates a switch signal.
As shown in fig. 4B, the schematic diagram of the operating principle of the U-shaped diffuse reflection photoelectric sensor of the present invention when the sensed height is h2 is shown. At this time, the distance from the light receiving center 303 to the light emitting center 302 is L2. Wherein h2 is greater than h1, and L2 is greater than L1. When the light source emitter 308 on the emitting light center 302 of the U-shaped diffuse reflection photoelectric sensor 30 emits a certain angle light, and the display panel 20 starts to pass through the area above the U-shaped diffuse reflection photoelectric sensor 30, the angle light emitted by the light source emitter 308 is reflected at the bottom of the display panel 20, the reflected light irradiates the surface of the light receiving diode 304, and the photoelectric switch of the light receiving diode 304 generates a switch signal.
Therefore, when the display panel 20 is located far from the U-shaped diffuse reflection photosensor 30, the optimal perceived height of the U-shaped diffuse reflection photosensor 30 can be adjusted by adjusting the distance L between the emission light center 302 and the light reception center 303.
Fig. 5 is a schematic diagram illustrating the working principle of the U-shaped diffuse reflection photoelectric sensor according to the present invention when the U-shaped diffuse reflection photoelectric sensor includes a scale. A scale 310 is disposed on the moving track 301, and the scale h on the scale is a sensing height when the distance L between the emitting light center 302 and the receiving light center 303 is different. For example, when the distance L between the emitted-light center 302 and the light-receiving center 303 is L1, the perceived height is h 1; when the distance L between the emission light center 302 and the light reception center 303 is L2, the perceived height is h 2; h1 and h2 are respectively corresponding different scale readings on the engraved scale.
When the sensing height h of the U-shaped diffuse reflection photoelectric sensor 30 needs to be changed, the light receiving center 303 only needs to be moved to the corresponding point h of the depicting scale.
The invention has the beneficial effects that: according to the U-shaped diffuse reflection photoelectric sensor provided by the invention, the light emitting center and the light receiving center are separately designed, and the light receiving center receiving surface is designed on the side surface of the light receiving center close to one end of the light emitting center, so that the influence of dust accumulation on the light receiving center receiving surface is effectively reduced, and the sensitivity of the photoelectric sensor is further improved.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (9)
1. A U-shaped diffuse reflectance photoelectric sensor, comprising: the light receiving device comprises a moving track, a light emitting center, a light receiving center and a light receiving diode;
the light emitting center is fixed at one end of the moving track, an inclined plane is arranged at the edge of the upper end, close to the light receiving center, of the light emitting center, and a light source emitter is arranged on the inclined plane; the light receiving center is fixed on the moving track through a fixing screw, the light receiving diode is arranged on the side surface of one end, close to the light emitting center, of the light receiving center, and the light receiving surface of the light receiving diode is perpendicular to the plane of the moving track.
2. The U-shaped diffuse reflectance photoelectric sensor according to claim 1, wherein the light source emitter is a light emitting diode.
3. The U-shaped diffuse reflection photoelectric sensor according to claim 1, wherein an indicator lamp is provided at a central position of an upper surface of the light receiving center.
4. The U-shaped diffuse reflectance photoelectric sensor according to claim 1, wherein the height of the emission light center is the same as the height of the light reception center.
5. The U-shaped diffuse reflection photoelectric sensor according to claim 1, wherein a fixing screw hole is provided on the moving rail.
6. The U-shaped diffuse reflection photoelectric sensor of claim 5, wherein the width of the fixing screw hole is larger than the diameter of the fixing screw, and the length of the fixing screw hole is smaller than the length of the moving rail.
7. The U-shaped diffuse reflection photoelectric sensor according to claim 1, wherein a surface of the moving rail is provided with a scribing scale.
8. The U-shaped diffuse reflection photoelectric sensor according to claim 1, wherein a base is provided on a lower surface of the moving rail, and the base is integrally formed with the moving rail.
9. The U-shaped diffuse reflection photoelectric sensor of claim 8, wherein two fixing screw holes are provided on the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324568.3A CN109612506B (en) | 2018-11-08 | 2018-11-08 | U-shaped diffuse reflection photoelectric sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811324568.3A CN109612506B (en) | 2018-11-08 | 2018-11-08 | U-shaped diffuse reflection photoelectric sensor |
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| Publication Number | Publication Date |
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| CN109612506A CN109612506A (en) | 2019-04-12 |
| CN109612506B true CN109612506B (en) | 2021-04-27 |
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| CN201811324568.3A Active CN109612506B (en) | 2018-11-08 | 2018-11-08 | U-shaped diffuse reflection photoelectric sensor |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0020879A1 (en) * | 1979-06-06 | 1981-01-07 | Erwin Sick GmbH Optik-Elektronik | Optical electronic distance sensor |
| JP2003279405A (en) * | 2002-03-20 | 2003-10-02 | Kyocera Corp | Limited reflection type photoelectric sensor |
| DE102009017466A1 (en) * | 2009-04-03 | 2010-10-07 | Balluff Gmbh | Photointerrupter |
| CN103744122B (en) * | 2013-12-17 | 2017-01-25 | 上海兰宝传感科技股份有限公司 | Zero-blind-spot diffuse reflection type photoelectric sensor |
| CN205482992U (en) * | 2016-03-22 | 2016-08-17 | 深圳市鼎创电子有限公司 | Photoelectric sensor with adjustable measuring distance |
| CN205748417U (en) * | 2016-06-14 | 2016-11-30 | 魏荣宗 | Photoelectric sensor |
| CN206369056U (en) * | 2017-01-09 | 2017-08-01 | 天津均唯宏电气系统工程有限公司 | A kind of mounting bracket of laser correlative detector |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant after: TCL Huaxing Photoelectric Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Applicant before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |
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