CN106059554A - Diffuse reflection photoelectric switch - Google Patents
Diffuse reflection photoelectric switch Download PDFInfo
- Publication number
- CN106059554A CN106059554A CN201610368756.0A CN201610368756A CN106059554A CN 106059554 A CN106059554 A CN 106059554A CN 201610368756 A CN201610368756 A CN 201610368756A CN 106059554 A CN106059554 A CN 106059554A
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- light
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- pcb assembly
- luminous organ
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- 238000001514 detection method Methods 0.000 claims abstract description 23
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 210000000056 organ Anatomy 0.000 claims description 38
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 9
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/941—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated using an optical detector
- H03K2217/94102—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated using an optical detector characterised by the type of activation
- H03K2217/94108—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated using an optical detector characterised by the type of activation making use of reflection
Landscapes
- Geophysics And Detection Of Objects (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The present invention discloses a diffuse reflection photoelectric switch. The switch comprises a switch housing which is internally provided with a PCB assembly, an illuminator for emitting detection light ray and a light receptor configured to receive the diffuse reflection light ray of a detection object. The illuminator is an infrared light emitting diode with the optical wavelength of 600-900nm. The light receptor is a photosensitive triode configured to detect reflection-back light and convert optical signals to electric signals. The diffuse reflection photoelectric switch integrates the illuminator and the light receptor, and the illuminator emits fan-shaped light beam to extend the detection range. The detection light ray emitted by the illuminator is reflected by the detection object to be inducted by the light receptor, and electric signals are outputted thought a signal output circuit so as to effectively improve the detection distance and the detection precision and improve the anti-interference capability with no need for matching usage of a reflection board. The detection range is wide, the anti-interference capacity is high, the response speed is fast and the usage is convenient, etc.
Description
Technical field
The present invention relates to a kind of photoelectric sensor, specifically one diffuse electric switch.
Background technology
Photoelectric sensor belong to non-contact type detection sensor, its detecting distance is relatively wide, for detect object presence or absence,
Distance and character etc., therefore it is widely used in industrial automation arrangement field.
Photoelectric sensor is to utilize detected material block light beam or reflect, and by synchronization loop gating circuit, thus examines
Survey with presence or absence of object.Object is not limited to metal, and all objects that can reflect light all can be detected.Photoelectric sensor will input electricity
Stream is converted to optical signal injection on emitter, and receptor further according to the power of the light received or enters with or without to target object
Row detection.
Existing photoelectric sensor is made up of emitter, receptor and testing circuit three part.Quasi goal is sent out by emitter
Irradiating light beam, the light beam of transmitting is typically derived from semiconductor light source, light emitting diode, laser diode and infrared-emitting diode,
Light beam is launched incessantly, or changes pulse width, and light beam radiation intensity pulsed is in the transmission through repeatedly selecting
Select, the most indirectly run towards target.Receptor is made up of, at receptor photodiode or phototriode, light cell
Above, equipped with optical element such as lens and aperture etc., face is testing circuit behind, and it can leach useful signal and application should
Signal.Additionally, also have triangle reflecting plate and optical fibers in the structural detail of photoelectric sensor, triangle reflecting plate is sound construction
Discharger, make light beam return from reflecting plate exactly, it can change the angle of departure with the scope of optical axis 0 to 25, makes
Light beam almost launches line from one, after reflection, or returns from this root reflected ray.
Presence or absence, distance and the character etc. of object can be detected by above-mentioned photoelectric sensor accurately, but structure is relatively
For complexity, and lacking the setting of protection circuit, reliability is the highest, and service life, compared with short and volume big, occupies relatively the when of use
Many spaces, use inconvenience.
Summary of the invention
The technical problem to be solved is for above-mentioned prior art present situation, and provides one to diffuse and establish by cable
Closing, luminous organ and light-receiving device are integrated in one, luminous organ sends ray fans and by detected material diffuse-reflectance to light-receiving device, is subject to
Light device selects current signal after optical signal being detected and exports.
The present invention solves the technical scheme that above-mentioned technical problem used: one diffuses electric switch, including switch
Housing, is fixed with PCB assembly, for sending the luminous organ of detection light and diffusing for receiving detectable substance in switch case
The light-receiving device of line.The sidewall of switch case is shaped with the fenestra of transmitted light, is installed with and infrared penetrates PC plastics structure at fenestra
The filter lens become.Luminous organ and light-receiving device are fixed on the side of PCB assembly, and the light-emitting area of luminous organ is near filter lens, and can send out
Go out fan beam.Luminous organ is the infrarede emitting diode of a length of 600nm to 900nm of light wave.Light-receiving device is that detection is emitted back towards light
And convert optical signals to the phototriode of the signal of telecommunication.
For optimizing technique scheme, present invention additionally comprises the technical scheme of following improvement.
Above-mentioned switch case is square plastic casing.It is shaped with installation PCB assembly, luminous organ in the inside of switch case and is subject to
The cavity of light device.It is provided with on the top of cavity and fixes the PCB fixed plate being connected with PCB assembly.
Above-mentioned PCB assembly is shaped with the illuminating circuit being connected with luminous organ and the signal output being connected with light-receiving device
Circuit.Luminous organ sends after detection light is reflected recurrence and is sensed by light-receiving device, and exports the signal of telecommunication by signal output apparatus.
Above-mentioned illuminating circuit includes the light modulation mould that Power Entry Module, rectifying and voltage-stabilizing module are connected with luminous organ
Block.
Signal amplification module that above-mentioned signal output apparatus includes being connected with light-receiving device, modulation circuit module, clock
Logic module and signal output module.
Above-mentioned Power Entry Module includes power input interface.Rectifying and voltage-stabilizing module includes power supply chip.Power supply chip
It is provided with Vout interface, Vin interface and GND interface.Vout interface with GND interface respectively two ends with the first electric capacity be connected, and
And GND interface is connected with earth terminal.Vin interface with GND interface respectively two ends with the second electric capacity be connected, and at the second electric capacity
The output branch road that two ends are parallel with the first resistance, the first diode and out splice going splice are constituted.
Above-mentioned PCB assembly includes processing chip.Optical modulator module includes light modulation audion.The collection of light modulation audion
Electrode is connected with out splice going splice, and after base series luminous organ, connection processes the GP0 interface of chip.
The colelctor electrode of above-mentioned light-receiving device and base stage connect power input interface by the second resistance, connect at base terminal
The polar capacitor on ground.The emitter stage of light-receiving device processes chip by variable resistance and the 3rd electric capacity and amplifying triode connection
GP2 interface.
Being provided with light source fixing part in above-mentioned cavity, light source fixing part is arranged between filter lens and PCB assembly, at light source
The inside of fixture is shaped with two energy the first through hole by light and the second through hole.Luminous organ is fixed on inside the first through hole.
Light-receiving device is fixed on inside the second through hole.The both sides of light source fixing part are shaped with fixes the ladder card being connected with switch case inwall
Mouthful.
The top of above-mentioned switch case is provided with light guide plate and the adjusting knob being connected with PCB assembly.Under light guide plate
Side is provided with power supply indicator and working station indicator, and power supply indicator is connected with power interface by power branch.Work
Status indicator lamp is connected with the emitter stage of display lamp audion, and the base stage connection of display lamp audion processes the GP5 of chip and connects
Mouthful, colelctor electrode connects power supply.
Compared with prior art, the diffuse-reflectance formula photoswitch of the present invention, luminous organ and light-receiving device are integrated in one, send out
Light device sends the light beam of sector, expands detection range.Luminous organ sends detection light after detected material diffuse-reflectance by light-receiving device
Sensing, and export the signal of telecommunication by signal output apparatus, detecting distance and accuracy of detection can be effectively improved, improve anti-interference energy
Power, and without reflecting plate with the use of, have that detection range is wide, capacity of resisting disturbance strong, fast response time, easy to use etc. excellent
Point.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1.
Fig. 2 is the plan structure schematic diagram of Fig. 1.
Fig. 3 is the cross-sectional view of embodiment 1.
Fig. 4 is the cross-sectional view of embodiment 2.
Fig. 5 is the electrical block diagram of power pack in PCB assembly.
Fig. 6 is the electrical block diagram of PCB assembly.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 to Fig. 6 show the structural representation of the present invention.
Reference therein is: switch case 1, cavity 11, filter lens 12, PCB assembly 2, PCB fixed plate 21, luminescence
Device 3, light-receiving device 4, light source fixing part the 5, first through hole the 51, second through hole 52, ladder bayonet socket 57, light guide plate 6, adjusting knob 7, electricity
Source chip the 81, first electric capacity the 82, second electric capacity the 83, first resistance the 84, first diode 85, out splice going splice 86, process chip 87,
Light modulation audion 88, polar capacitor 89, variable resistance the 91, the 3rd electric capacity 92, amplifying triode 93, power supply indicator 94, work
Make status indicator lamp 95, display lamp audion 96.
Embodiment 1 as shown in Figures 1 to 3, the one of the present embodiment diffuses electric switch, including switch case 1, is opening
PCB assembly 2 it is fixed with, for sending the luminous organ 3 of detection light and returning the light of light for receiving reflection in closing housing 1
Device 4.
In the present invention, luminous organ 3 be use wavelength be the infrarede emitting diode of 600nm to 900nm.The present embodiment is adopted
It is the infrarede emitting diode of 880nm with light source wave band.The light that luminous organ 3 sends is returned through the diffuse-reflectance of external detection thing,
Detected by light-receiving device 4 sensing again.
Luminous organ 3 and light-receiving device 4 are fixed on the side of PCB assembly 2.The sidewall of switch case 1 is shaped with the window of transmitted light
Hole, is installed with filter lens 12 at fenestra.The light-emitting area of luminous organ 3 is near filter lens 12, and the light sent is through fenestra and filter
Light microscopic 12 penetrates, and forms fan-shaped light beam.Detected material is through fan beam, and the light that diffuse-reflectance is returned is through fenestra and filter lens
12 inject light-receiving device 4.Filter lens 12 is used for filtering the interference to light-receiving device 4 of the visible ray light with other wavelength, it is preferred to use red
Penetrate outward PC plastics.
PCB assembly 2 is shaped with the illuminating circuit being connected with luminous organ 3 and the signal output electricity being connected with light-receiving device 4
Road.Luminous organ 3 sends after detection light is reflected recurrence and is sensed by light-receiving device 4, and exports the signal of telecommunication by signal output apparatus.
Illuminating circuit includes the optical modulator module that Power Entry Module, rectifying and voltage-stabilizing module are connected with luminous organ 3, can
So that power supply is carried out rectifying and voltage-stabilizing, it is achieved the luminescence of luminous organ 3 and modulation light.
Power Entry Module includes power input interface.Rectifying and voltage-stabilizing module includes power supply chip 81.Power supply chip 81 sets
There are Vout interface, Vin interface and GND interface.Vout interface with GND interface respectively two ends with the first electric capacity 82 be connected, and
And GND interface is connected with earth terminal.Vin interface with GND interface respectively two ends with the second electric capacity 83 be connected, and at the second electricity
The two ends holding 83 are parallel with first resistance the 84, first diode 85 and the output branch road of out splice going splice 86 composition.
PCB assembly 2 includes processing chip 87.Optical modulator module includes light modulation audion 88.Light modulation audion 88
Colelctor electrode is connected with out splice going splice 86, and after base series luminous organ 3, connection processes the GP0 interface of chip 87.
The colelctor electrode of light-receiving device 4 and base stage connect power input interface by the second resistance, and connecting at base terminal has ground connection
Polar capacitor 89.The emitter stage of light-receiving device 4 is processed by variable resistance 91 and the 3rd electric capacity 92 and amplifying triode 93 connection
The GP2 interface of chip 87.
Light-receiving device 4 is the phototriode being connected with signal amplification module.If there being barrier diffuse-reflectance catacustic, it is subject to
Light device 4 just can detect barrier.
Switch case 1 is square plastic casing, is preferably dimensioned to be 20mm*30mm.It is shaped with installation in the inside of switch case 1
The cavity 11 of PCB assembly 2, luminous organ 3 and light-receiving device 4.
The PCB fixed plate 21 that be connected fixing with PCB assembly 2 it is provided with on the top of cavity 11.PCB fixed plate 21 and switch housing
The inwall of body 1 is connected, and the PCB assembly 2 that is fixed.
It is shaped with aperture, power line and data wire in switch case 1 to be connected with PCB assembly 2 by this aperture.
Being provided with light source fixing part 5 in cavity 11, light source fixing part 5 is arranged between filter lens 12 and PCB assembly 2, at light
The inside of source fixture 5 is shaped with two energy the first through hole 51 and the second through hole 52 by light.Luminous organ 3 is fixed on first and leads to
The inside in hole 51.Light-receiving device 4 is fixed on the inside of the second through hole 52.
The both sides of light source fixing part 5 are shaped with fixes, with switch case 1 inwall, the ladder bayonet socket 57 being connected, it is simple to install fixing
Light source fixing part 5.
The top of switch case 1 is provided with light guide plate 6 and the adjusting knob 7 being connected with PCB assembly 2, is used for regulating
The sensitivity of diffuse-reflectance formula photoswitch and output type.Power supply indicator 94 and duty instruction it is provided with below light guide plate 6
Lamp 95, power supply indicator 94 is connected with power interface by power branch.Working station indicator 95 and display lamp audion
The emitter stage of 96 is connected, and the base stage connection of display lamp audion 96 processes the GP5 interface of chip 87, and colelctor electrode connects power supply.
It it is the cross-sectional view of embodiment 2 shown in Fig. 4.Diffuse-reflectance formula photoswitch in example 2, including opening
Close housing 1, in switch case 1, be fixed with PCB assembly 2, for sending the luminous organ 3 of detection light and being reflected back for receiving
Return the light-receiving device 4 of light.
The infraluminescence module that luminous organ 3 in the present embodiment uses light source wave band to be 650nm.Luminous organ 3 is fixed on
The inside of one through hole 51, and be connected with PCB assembly 2.The light-emitting area of luminous organ 3, near filter lens 12, directly sends sector
Light.Detected material is through fan beam, and the light that diffuse-reflectance is returned injects light-receiving device 4 through fenestra and filter lens 12.
Highly preferred embodiment of the present invention illustrates, those of ordinary skill in the art the various changes made or remodeling are the most not
Can depart from the scope of the present invention.
Claims (10)
1. diffuse an electric switch, including switch case (1), be fixed with in described switch case (1) PCB assembly (2),
For sending the luminous organ (3) of detection light and for receiving the light-receiving device (4) of detectable substance diffuse-reflectance light；It is characterized in that: institute
The sidewall stating switch case (1) is shaped with the fenestra of transmitted light, is installed with and infrared penetrates PC plastics structure at described fenestra
The filter lens (12) become；Described luminous organ (3) and light-receiving device (4) are fixed on the side of described PCB assembly (2), and described sends out
The light-emitting area of light device (3) is near described filter lens (12), and can send fan beam；Described luminous organ (3) is optical wavelength
Infrarede emitting diode for 600nm to 900nm；Described light-receiving device (4) is that detection is emitted back towards light and converts optical signals to
The phototriode of the signal of telecommunication.
One the most according to claim 1 diffuses electric switch, it is characterized in that: described switch case (1) is square
Plastic casing；The described PCB assembly (2) of installation, luminous organ (3) and the cavity of light-receiving device (4) it is shaped with in the inside of switch case (1)
(11)；The PCB fixed plate (21) that be connected fixing with PCB assembly (2) it is provided with on the top of cavity (11).
One the most according to claim 2 diffuses electric switch, it is characterized in that: described PCB assembly (2) is shaped with and sends out
Illuminating circuit that light device (3) is connected and the signal output apparatus being connected with light-receiving device (4)；Described luminous organ (3) is sent out
Go out to detect after light is reflected recurrence and sensed by described light-receiving device (4), and export the signal of telecommunication by signal output apparatus.
One the most according to claim 3 diffuses electric switch, it is characterized in that: described illuminating circuit includes that power supply is defeated
Enter module, optical modulator module that rectifying and voltage-stabilizing module is connected with luminous organ (3).
One the most according to claim 4 diffuses electric switch, it is characterized in that: described signal output apparatus include with
Signal amplification module, modulation circuit module, clocked logic module and the signal output module that light-receiving device (4) is connected.
One the most according to claim 5 diffuses electric switch, it is characterized in that: described Power Entry Module includes electricity
Source input interface；Described rectifying and voltage-stabilizing module includes power supply chip (81)；Described power supply chip (81) be provided with Vout interface,
Vin interface and GND interface；Described Vout interface with GND interface respectively two ends with the first electric capacity (82) be connected, and
GND interface is connected with earth terminal；Described Vin interface with GND interface respectively two ends with the second electric capacity (83) be connected, and
The two ends of the second electric capacity (83) are parallel with the output that the first resistance (84), the first diode (85) and out splice going splice (86) constitute and prop up
Road.
One the most according to claim 6 diffuses electric switch, it is characterized in that: described PCB assembly (2) includes processing
Chip (87)；Described optical modulator module includes light modulation audion (88)；The colelctor electrode of described light modulation audion (88) with
Described out splice going splice (86) is connected, and luminous organ (3) connection afterwards described in base series processes the GP0 interface of chip (87).
One the most according to claim 7 diffuses electric switch, it is characterized in that: the colelctor electrode of described light-receiving device (4) and
Base stage connects power input interface by the second resistance, and connecting at base terminal has the polar capacitor (89) of ground connection；Described light-receiving device
(4) emitter stage processes chip (87) by variable resistance (91) and the 3rd electric capacity (92) and amplifying triode (93) connection
GP2 interface.
One the most according to claim 8 diffuses electric switch, it is characterized in that: be provided with light source in described cavity (11)
Fixture (5), described light source fixing part (5) is arranged between filter lens (12) and PCB assembly (2), in light source fixing part (5)
Inside be shaped with two energy by first through hole (51) of light and the second through hole (52)；Described luminous organ (3) is fixed on
One through hole (51) is internal；It is internal that described light-receiving device (4) is fixed on the second through hole (52)；The both sides of described light source fixing part (5)
It is shaped with and fixes the ladder bayonet socket (57) being connected with switch case (1) inwall.
One the most according to claim 9 diffuses electric switch, it is characterized in that: the top peace of described switch case (1)
Equipped with light guide plate (6) and the adjusting knob (7) that is connected with PCB assembly (2)；Described light guide plate (6) lower section is provided with power supply
Display lamp (94) and working station indicator (95), described power supply indicator (94) is connected with power interface by power branch
Connect；Described working station indicator (95) is connected with the emitter stage of display lamp audion (96), described display lamp three pole
The base stage connection of pipe (96) processes the GP5 interface of chip (87), and colelctor electrode connects power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368756.0A CN106059554A (en) | 2016-05-30 | 2016-05-30 | Diffuse reflection photoelectric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368756.0A CN106059554A (en) | 2016-05-30 | 2016-05-30 | Diffuse reflection photoelectric switch |
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| Publication Number | Publication Date |
|---|---|
| CN106059554A true CN106059554A (en) | 2016-10-26 |
Family
ID=57175561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610368756.0A Pending CN106059554A (en) | 2016-05-30 | 2016-05-30 | Diffuse reflection photoelectric switch |
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| Country | Link |
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| CN (1) | CN106059554A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107483037A (en) * | 2017-08-16 | 2017-12-15 | 温州晟荣工业自动化有限公司 | A kind of diffusing reflection formula optoelectronic switch |
| CN107483038A (en) * | 2017-08-16 | 2017-12-15 | 温州益禾电子科技有限公司 | A kind of diffusing reflection formula optoelectronic switch of flush type installation |
| CN109044532A (en) * | 2018-08-10 | 2018-12-21 | 杨琨 | Operating robot operation monitoring system and method based on diffusing reflection laser inductor |
| CN109470284A (en) * | 2018-12-13 | 2019-03-15 | 上海索迪龙自动化有限公司 | A kind of background inhibition photoelectric sensor |
| PL423239A1 (en) * | 2017-10-23 | 2019-05-06 | Lesniak Wojciech Raycon Tech | PCB printed board, preferably as an element of the presence detection proximity switch, installed in building engineering |
| CN113998474A (en) * | 2021-11-22 | 2022-02-01 | 红云红河烟草(集团)有限责任公司 | Tear tray group detection device of dish machine open |
| CN114521819A (en) * | 2022-03-22 | 2022-05-24 | 江西艾芬达暖通科技股份有限公司 | Photoelectric sensing electric towel rack based on diffuse reflection principle |
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| CN200997593Y (en) * | 2007-01-29 | 2007-12-26 | 傅欣欣 | Double-channel laser switching senser |
| CN201583673U (en) * | 2009-12-31 | 2010-09-15 | 上海兰宝传感器有限公司 | Photoelectric transducer |
| US20120298872A1 (en) * | 2008-08-28 | 2012-11-29 | Qiaomei Tang | Distance detection induction device |
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2016
- 2016-05-30 CN CN201610368756.0A patent/CN106059554A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200997593Y (en) * | 2007-01-29 | 2007-12-26 | 傅欣欣 | Double-channel laser switching senser |
| US20120298872A1 (en) * | 2008-08-28 | 2012-11-29 | Qiaomei Tang | Distance detection induction device |
| CN201583673U (en) * | 2009-12-31 | 2010-09-15 | 上海兰宝传感器有限公司 | Photoelectric transducer |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107483037A (en) * | 2017-08-16 | 2017-12-15 | 温州晟荣工业自动化有限公司 | A kind of diffusing reflection formula optoelectronic switch |
| CN107483038A (en) * | 2017-08-16 | 2017-12-15 | 温州益禾电子科技有限公司 | A kind of diffusing reflection formula optoelectronic switch of flush type installation |
| CN107483037B (en) * | 2017-08-16 | 2020-05-05 | 温州晟荣工业自动化有限公司 | Diffuse reflection type photoelectric switch |
| CN107483038B (en) * | 2017-08-16 | 2020-06-23 | 温州益禾电子科技有限公司 | Embedded mounted diffuse reflection type photoelectric switch |
| PL423239A1 (en) * | 2017-10-23 | 2019-05-06 | Lesniak Wojciech Raycon Tech | PCB printed board, preferably as an element of the presence detection proximity switch, installed in building engineering |
| CN109044532A (en) * | 2018-08-10 | 2018-12-21 | 杨琨 | Operating robot operation monitoring system and method based on diffusing reflection laser inductor |
| CN109470284A (en) * | 2018-12-13 | 2019-03-15 | 上海索迪龙自动化有限公司 | A kind of background inhibition photoelectric sensor |
| CN113998474A (en) * | 2021-11-22 | 2022-02-01 | 红云红河烟草(集团)有限责任公司 | Tear tray group detection device of dish machine open |
| CN114521819A (en) * | 2022-03-22 | 2022-05-24 | 江西艾芬达暖通科技股份有限公司 | Photoelectric sensing electric towel rack based on diffuse reflection principle |
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