CN110906961A - Multi-emission source photoelectric sensor - Google Patents
Multi-emission source photoelectric sensor Download PDFInfo
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- CN110906961A CN110906961A CN201911286165.9A CN201911286165A CN110906961A CN 110906961 A CN110906961 A CN 110906961A CN 201911286165 A CN201911286165 A CN 201911286165A CN 110906961 A CN110906961 A CN 110906961A
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- 230000003287 optical effect Effects 0.000 claims abstract description 13
- 238000005192 partition Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 230000005693 optoelectronics Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 230000004048 modification Effects 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
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Abstract
The invention provides a multi-emission source photoelectric sensor which comprises a sensor shell and a photoelectric module arranged in the sensor shell, wherein the photoelectric module comprises a photoelectric circuit board, an emission module and a receiving module, the emission module and the receiving module are positioned on the photoelectric circuit board, the receiving module comprises a receiving tube arranged on the photoelectric circuit board, and the emission module comprises a plurality of emission tubes which are arranged on the photoelectric circuit board and are circumferentially distributed on the periphery of the receiving tube. Aiming at the reflection type photoelectric sensor, the plurality of transmitting tubes are arranged on the periphery of the receiving tube in the circumferential direction to improve the detection area of the photoelectric sensor, and the transmitted optical signals can be better received, so that the more accurate detection effect is realized.
Description
Technical Field
The invention belongs to the technical field of photoelectric sensors, and particularly relates to a reflective multi-emission-source photoelectric sensor.
Background
The transmitting end and the receiving end of the reflective photoelectric sensor are arranged in the sensor shell in the same direction, and optical signals sent by the transmitting end are reflected by a detected object and then received by the receiving end, so that the sensing detection function is realized.
However, in the prior art, the accuracy of the reflective photoelectric sensor is affected when the reflective photoelectric sensor detects a cambered object or a transparent object, and the transmitted signal cannot be accurately reflected and received. For example, when the surface of the object to be detected is a curved surface, the emitted light sometimes cannot enter the receiving range of the receiving end after being reflected by the curved surface; when the detected object is a transparent object, the intensity of the reflected light is weak due to the small reflection rate, and the receiving end may not detect the object.
Disclosure of Invention
The present invention is directed to solve the above technical problems, and an object of the present invention is to provide a multi-emission source photoelectric sensor capable of improving the detection accuracy.
In order to achieve the purpose, the invention adopts the following technical scheme:
the photoelectric sensor comprises a sensor shell and a photoelectric module arranged in the sensor shell, wherein the photoelectric module comprises a photoelectric circuit board, and an emitting module and a receiving module which are arranged on the photoelectric circuit board.
In the aforementioned multi-emission-source photoelectric sensor, the sensor housing includes a housing body, a filter located at a front end of the housing body, and a rear plug located at a rear end of the housing body, the photoelectric module faces the filter to emit and receive optical signals from the filter, the rear plug has a wire passing hole for passing a wire, and one end of the wire located in the sensor housing is connected to the photoelectric module.
In the multi-emission-source photoelectric sensor, the housing body is further provided with a mirror holder located at the front end of the housing body and a main circuit board located behind the mirror holder, the optical filter is mounted in the front end of the mirror holder, the photoelectric module is mounted in the rear end of the mirror holder, and the lead is connected to the photoelectric module through the main circuit board.
In the multi-emission-source photoelectric sensor, the emission tube is connected with a slide rheostat for adjusting the intensity of the emitted light, and the slide rheostat is mounted on the main circuit board.
In the multi-emission-source photoelectric sensor, the housing body has a through hole penetrating through a side wall of the housing body, the main circuit board has a positioner, the adjusting end of the slide rheostat is located at a top end of the positioner, and the adjusting end is exposed outside the housing body through the through hole.
In the multi-emission source photoelectric sensor, a circumferential positioning structure is arranged between the housing body and the lens frame.
In the aforementioned multi-emission source photoelectric sensor, the circumferential positioning structure includes a positioning groove formed at one end of the housing body and a positioning protrusion disposed on the lens holder and adapted to the positioning groove.
In the multi-emission source photoelectric sensor, the lens frame is provided with an isolation plate, the center of the isolation plate is provided with a hollow receiving tube mounting column, the isolation plate is provided with at least two emission tube mounting holes at the periphery of the receiving tube mounting column, the receiving tube penetrates through the receiving tube mounting column, and the at least two emission tubes penetrate through the at least two emission tube mounting holes one by one.
In the multi-emission source photoelectric sensor, the circumferential outer side of the housing body has an axially extending mounting thread, and the through hole is located outside one end of the mounting thread.
In the multi-emission source photoelectric sensor, at least two emission tubes are uniformly distributed on the circumferential periphery of the receiving tube to circumferentially surround the receiving tube;
the photoelectric circuit board is of a circular structure or a rectangular structure, and the receiving tube is located in the center of the photoelectric circuit board.
The invention has the advantages that: aiming at the reflection type photoelectric sensor, a plurality of transmitting tubes are arranged on the periphery of a receiving tube in the circumferential direction so as to improve the detection area of the photoelectric sensor, and transmitted optical signals can be better received, so that the more accurate detection effect is realized.
Drawings
FIG. 1 is a schematic diagram of a multi-emission source photoelectric sensor according to the present invention;
FIG. 2 is an exploded view of the multiple emission source photoelectric sensor of the present invention;
FIG. 3 is a schematic diagram showing the positions of the receiving tube and the transmitting tube when the multi-photoelectric circuit board has a rectangular structure according to the present invention;
fig. 4 is a schematic diagram showing the effect of a conventional photoelectric sensor compared with the multi-emission source photoelectric sensor of the present invention.
Reference numerals: a sensor housing 1; a housing body 1; an optical filter 12; a rear plug 13; mounting threads 14; a through hole 15; a positioning groove 16; a photovoltaic module 2; an opto-electric circuit board 21; a receiving tube 22; a launch tube 23; a wire 3; a frame 4; a separator plate 41; receiving tube mounting post 42; a launch tube mounting hole 43; a positioning boss 44; a main circuit board 5; a positioner 51; an adjustment end 52.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and fig. 2, the present embodiment discloses a multi-emission source photoelectric sensor, which includes a sensor housing 1 and a photoelectric module 2 installed in the sensor housing 1, wherein the photoelectric module 2 includes a photoelectric circuit board 21, and an emission module and a reception module located on the photoelectric circuit board 21. In particular, the receiving module includes a receiving tube 22 mounted on the photoelectric circuit board 21, and the transmitting module includes at least two transmitting tubes 23 mounted on the photoelectric circuit board 21 and circumferentially and uniformly distributed on the periphery of the receiving tube 22, so that the at least two transmitting tubes 23 circumferentially surround the receiving tube 22, thereby enabling the transmitted optical signals to be better received by the receiving tube 22, and achieving a more accurate detection effect.
Specifically, the number of the emission tubes can be 3-8, such as 4, 5, etc.
Further, the photoelectric circuit board 21 may have any structure, such as a circular structure, a rectangular structure as shown in fig. 3, and the like, and the receiving pipe 22 is located at the center of the photoelectric circuit board 21.
Specifically, the sensor housing 1 includes a housing body 1, a filter 12 located at the front end of the housing body 1, and a rear plug 13 located at the rear end of the housing body 1, the optoelectronic module 2 faces the filter 12 to transmit and receive optical signals through the filter 12, the rear plug 13 has a wire passing hole for passing through the wire 3, and one end of the wire 3 located in the sensor housing 1 is connected to the optoelectronic module 2. And preferably, the circumferential outer side of the housing body 1 has an axially extending mounting thread 14 to facilitate mounting of the photoelectric sensor of the present embodiment at a target position.
Furthermore, a lens frame 4 positioned at the front end of the housing body 1 and a main circuit board 5 positioned behind the lens frame 4 are also arranged in the housing body 1, the optical filter 12 is installed in the front end of the lens frame 4, the optoelectronic module 2 is installed in the rear end of the lens frame 4, and the lead 3 is connected to the optoelectronic module 2 through the main circuit board 5.
Specifically, the filter 12 and the photoelectric circuit board 21 are provided with annular clamping grooves on the circumferential outer sides, and the frame 4 is provided with an annular clamping table adapted to the clamping grooves. The optical filter 12 is clamped in the front end part of the lens bracket 4 through the corresponding annular clamping groove and the corresponding annular clamping table. Likewise, the opto-electronic circuit board 21 is captured within the rear end of the frame 4 by corresponding annular capture slots and annular capture platforms.
Furthermore, the lens frame 4 has a partition plate 41 therein, the center of the partition plate 41 has a hollow receiving tube mounting post 42, the partition plate 41 has at least two transmitting tube mounting holes 43 on the periphery of the receiving tube mounting post 42, the receiving tube 22 penetrates through the receiving tube mounting post 42, and the transmitting tubes 23 penetrate through the transmitting tube mounting holes 43 one by one, so as to improve the mounting stability of the optoelectronic module 2 in the sensor housing 1.
Preferably, a slide rheostat for adjusting the intensity of the emitted light is connected to the plurality of emitting tubes 23, and the slide rheostat is mounted on the main circuit board 5. Correspondingly, the shell body 11 is provided with a through hole 15 penetrating through the side wall of the shell body and positioned outside one end of the mounting thread 14, the main circuit board 5 is provided with a locator 51, the adjusting end 52 of the slide rheostat is positioned at the top end of the locator 51, and the adjusting end 52 is exposed outside the shell body 11 through the through hole 15. So that the user can directly adjust the luminous intensity of the emission tube outside the sensor of this embodiment. Specifically, the plurality of emitter tubes 23 may be connected in parallel with each other, and a sliding varistor may be connected to a trunk of the plurality of emitter tubes 23 to simultaneously adjust the luminous intensities of the plurality of emitter tubes 23 by the sliding varistor.
Further, there is a circumferential positioning structure between the housing body 11 and the frame 4. And the circumferential positioning structure here includes a positioning groove 16 formed at one end of the housing body 11 and a positioning protrusion 44 provided on the lens holder 4 and adapted to the positioning groove 16. When the lens holder is put into use, the lens holder 4 and the housing body 1 are circumferentially positioned by the positioning groove 16 and the positioning projection 44 to ensure that the positions of the retainer 51 and the through hole 15 are consistent.
The following takes four emission tubes 23 as an example to comparatively illustrate the advantages of the multi-emission source photoelectric sensor of the present embodiment over the conventional photoelectric sensor:
the four emitting tubes 23 of the multi-emission-source photoelectric sensor of this embodiment are uniformly distributed above, below, on the left, and on the right of the receiving tube 22, the conventional photoelectric sensor has only one emitting tube 23 and one receiving tube 22, the light-emitting coverage area of the emitting tube of the conventional photoelectric sensor is the area a1 in fig. 4, the detectable area of the receiving tube is the area B1 in fig. 4, while the light-emitting coverage area of the emitting tube of the multi-emission-source photoelectric sensor of this embodiment is the area a2 in fig. 4, and the detectable area of the receiving tube is the area B2 in fig. 4. It can be seen that the multi-emission source photoelectric sensor of the present embodiment has a greatly increased detectable area compared to the conventional photoelectric sensor, and even when detecting a curved object, the reflected light detected by the receiving tube increases due to the increased incident angle of the emitted light. Similarly, when detecting an object with high transparency, multiple incident lights are superposed in intensity after being reflected, and therefore, the multiple incident lights are more easily detected by the receiving tube.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the sensor housing 1 is used more herein; a housing body 1; an optical filter 12; a rear plug 13; mounting threads 14; a through hole 15; a positioning groove 16; a photovoltaic module 2; an opto-electric circuit board 21; a receiving tube 22; a launch tube 23; a wire 3; a frame 4; a separator plate 41; receiving tube mounting post 42; a launch tube mounting hole 43; a positioning boss 44; a main circuit board 5; a positioner 51; adjustment end 52, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A multi-emission source photoelectric sensor comprises a sensor shell (1) and a photoelectric module (2) installed in the sensor shell (1), wherein the photoelectric module (2) comprises a photoelectric circuit board (21), an emission module and a receiving module, the emission module and the receiving module are located on the photoelectric circuit board (21), the receiving module comprises a receiving tube (22) installed on the photoelectric circuit board (21), and the emission module comprises at least two emission tubes (23) which are installed on the photoelectric circuit board (21) and are circumferentially distributed on the periphery of the receiving tube (22).
2. The multi-emission-source photoelectric sensor according to claim 1, wherein the sensor housing (1) comprises a housing body (11), a filter (12) at a front end of the housing body (11), and a rear plug (13) at a rear end of the housing body (11), the photoelectric module (2) faces the filter (12) to emit and receive optical signals from the filter (12), the rear plug (13) has a wire through hole for passing a wire (3), and one end of the wire (3) in the sensor housing (1) is connected to the photoelectric module (2).
3. The multi-emission-source photoelectric sensor according to claim 2, wherein the housing body (11) further comprises a frame (4) at the front end of the housing body (11) and a main circuit board (5) at the rear of the frame (4), the optical filter (12) is mounted in the front end of the frame (4), the photoelectric module (2) is mounted in the rear end of the frame (4), and the lead (3) is connected to the photoelectric module (2) through the main circuit board (5).
4. The multi-emission source photoelectric sensor according to claim 3, wherein a sliding rheostat for adjusting the intensity of the emitted light is connected to the emission tube (23), and the sliding rheostat is mounted on the main circuit board (5).
5. The photoemitter-type photoelectric sensor according to claim 4, wherein the housing body (11) has a through hole (15) penetrating through the side wall of the housing body, the main circuit board (5) has a locator (51), the adjustment end (52) of the slide rheostat is located at the top end of the locator (51), and the adjustment end (52) is exposed outside the housing body (11) through the through hole (15).
6. The multi-emission source photoelectric sensor according to claim 5, wherein a circumferential positioning structure is provided between the housing body (11) and the frame (4).
7. The multi-emission source photoelectric sensor according to claim 6, wherein the circumferential positioning structure comprises a positioning groove (16) formed at one end of the housing body (11) and a positioning protrusion (44) arranged on the frame (4) and adapted to the positioning groove (16).
8. The multi-emission-source photoelectric sensor according to claim 7, wherein the frame (4) has a partition plate (41), the partition plate (41) has a hollow receiving tube mounting column (42) at the center, the partition plate (41) has at least two emission tube mounting holes (43) at the periphery of the receiving tube mounting column (42), the receiving tubes (22) penetrate the receiving tube mounting column (42), and the at least two emission tubes (23) penetrate the at least two emission tube mounting holes (43).
9. The multi-emission source photoelectric sensor according to claim 8, wherein the housing body (11) has an axially extending mounting thread (14) on a circumferential outer side thereof, and the through hole (15) is located outside one end of the mounting thread (14).
10. The multi-emission source photoelectric sensor according to any one of claims 1 to 9, wherein at least two emission tubes (23) are evenly distributed around the circumference of the receiving tube (22) to circumferentially surround the receiving tube (22);
the photoelectric circuit board (21) is of a circular structure or a rectangular structure, and the receiving tube (22) is located at the center of the photoelectric circuit board (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911286165.9A CN110906961A (en) | 2019-12-13 | 2019-12-13 | Multi-emission source photoelectric sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911286165.9A CN110906961A (en) | 2019-12-13 | 2019-12-13 | Multi-emission source photoelectric sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110906961A true CN110906961A (en) | 2020-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911286165.9A Pending CN110906961A (en) | 2019-12-13 | 2019-12-13 | Multi-emission source photoelectric sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110906961A (en) |
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2019
- 2019-12-13 CN CN201911286165.9A patent/CN110906961A/en active Pending
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