CN205647484U - Diffuse reflection photoelectric switch - Google Patents
Diffuse reflection photoelectric switch Download PDFInfo
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- CN205647484U CN205647484U CN201620505906.3U CN201620505906U CN205647484U CN 205647484 U CN205647484 U CN 205647484U CN 201620505906 U CN201620505906 U CN 201620505906U CN 205647484 U CN205647484 U CN 205647484U
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Abstract
The utility model discloses a diffuse reflection photoelectric switch, including switch shell, the switch shell internal fixation has the PCB subassembly, is used for to send the illuminator that detects light and is used for receiving the photic ware that detects thing diffuse reflection light. The illuminator is that the optical wavelength is the infrared light emitting diode of 600nm to 900nm. The photic ware detects the phototriode who penetrates the catacustic and be light signal conversion the signal of telecommunication. This diffuse reflection formula photoelectric switch, with illuminator and photic ware integration in an organic whole, the illuminator sends sectorial light beam, enlarges the detection range. The illuminator sends detection light and is responded to by the photic ware after the detected object diffuse reflection to through the signal output circuit output signal of telecommunication, detection distance can be effectively improved and the precision is detected, put forward the high anti jamming ability, and need not the reflecting plate cooperation and use, have that the detection range is wide, advantages such as the interference killing feature is strong, response speed is fast, convenient to use.
Description
Technical field
This utility model relates to a kind of photoelectric sensor, specifically one and diffuses electric switch.
Background technology
Photoelectric sensor belongs to non-contact type detection sensor, and its detecting distance is relatively wide, and for detecting the presence or absence of object, 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 detects with presence or absence of object.Object is not limited to metal, and all objects that can reflect light all can be detected.Input current is converted to optical signal injection on emitter by photoelectric sensor, and receptor further according to the power of the light received or detects with or without to target object.
Existing photoelectric sensor is made up of emitter, receptor and testing circuit three part.Emitter alignment objective emission light beam, the light beam launched is typically derived from semiconductor light source, light emitting diode, laser diode and infrared-emitting diode, light beam is launched incessantly, or change pulse width, light beam radiation intensity pulsed, in the transmission through repeatedly selecting, is run the most indirectly towards target.Receptor is made up of photodiode or phototriode, light cell, and before receptor, equipped with optical element such as lens and aperture etc., face is testing circuit behind, and it can leach useful signal and apply this signal.In addition, the structural detail of photoelectric sensor also has triangle reflecting plate and optical fibers, triangle reflecting plate is well-set discharger, light beam is made to return from reflecting plate exactly, it can change the angle of departure in the scope with optical axis 0 to 25, make light beam almost launch line from one, after reflection, or return 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 complex, and lacks the setting of protection circuit; reliability is the highest; service life is big compared with short and volume, occupies more space, use inconvenience when of use.
Summary of the invention
Technical problem to be solved in the utility model is for above-mentioned prior art present situation, and provide one to diffuse electric switch, 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, and light-receiving device selects current signal after optical signal being detected and exports.
This utility model solves the technical scheme that used of above-mentioned technical problem: one diffuses electric switch, including switch case, it is fixed with PCB assembly in switch case, for sending the luminous organ of detection light and for receiving the light-receiving device of detectable substance diffuse-reflectance light.The sidewall of switch case is shaped with the fenestra of transmitted light, is installed with the infrared filter lens penetrating PC plastics composition at fenestra.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 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 converts optical signals to the phototriode of the signal of telecommunication.
For optimizing technique scheme, this utility model also includes the technical scheme of following improvement.
Above-mentioned switch case is square plastic casing.Installation PCB assembly, luminous organ and the cavity of light-receiving device it is shaped with in the inside of switch case.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 apparatus being connected with light-receiving device.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 optical modulator module that Power Entry Module, rectifying and voltage-stabilizing module are connected with luminous organ.
Above-mentioned signal output apparatus includes signal amplification module, modulation circuit module, clocked logic module and the signal output module being connected with light-receiving device.
Above-mentioned Power Entry Module includes power input interface.Rectifying and voltage-stabilizing module includes power supply chip.Power supply chip 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 GND interface is connected with earth terminal.Vin interface with GND interface respectively two ends with the second electric capacity be connected, and be parallel with the output branch road that the first resistance, the first diode and out splice going splice are constituted at the two ends of the second electric capacity.
Above-mentioned PCB assembly includes processing chip.Optical modulator module includes light modulation audion.The colelctor electrode of light modulation audion 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, and connecting at base terminal has the polar capacitor of ground connection.The emitter stage of light-receiving device processes the GP2 interface of chip by variable resistance and the 3rd electric capacity and amplifying triode connection.
Being provided with light source fixing part in above-mentioned cavity, light source fixing part is arranged between filter lens and PCB assembly, is shaped with two energy the first through hole by light and the second through hole in the inside of light source fixing part.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 bayonet socket being connected with switch case inwall.
The top of above-mentioned switch case is provided with light guide plate and the adjusting knob being connected with PCB assembly.Being provided with power supply indicator and working station indicator below light guide plate, power supply indicator is connected with power interface by power branch.Working station indicator is connected with the emitter stage of display lamp audion, and the base stage connection of display lamp audion processes the GP5 interface of chip, and colelctor electrode connects power supply.
Compared with prior art, diffuse-reflectance formula photoswitch of the present utility model, luminous organ and light-receiving device are integrated in one, luminous organ sends the light beam of sector, expands detection range.Luminous organ sends detection light and is sensed by light-receiving device after detected material diffuse-reflectance, and export the signal of telecommunication by signal output apparatus, detecting distance and accuracy of detection can be effectively improved, improve capacity of resisting disturbance, and without reflecting plate with the use of, have that detection range is wide, capacity of resisting disturbance strong, fast response time, an advantage such as easy to use.
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, embodiment of the present utility model is described in further detail.
Fig. 1 to Fig. 6 show structural representation of the present utility model.
Reference therein is: switch case 1, cavity 11, filter lens 12, PCB assembly 2, PCB fixed plate 21, luminous organ 3, light-receiving device 4, light source fixing part 5, first through hole 51, second through hole 52, ladder bayonet socket 57, light guide plate 6, adjusting knob 7, power supply chip 81, first electric capacity 82, second electric capacity 83, first resistance 84, first diode 85, out splice going splice 86, process chip 87, light modulation audion 88, polar capacitor 89, variable resistance 91, 3rd electric capacity 92, amplifying triode 93, power supply indicator 94, working station indicator 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 fixed with PCB assembly 2, for sending the luminous organ 3 of detection light and returning the light-receiving device 4 of light for receiving reflection in switch case 1.
In this utility model, luminous organ 3 be use wavelength be the infrarede emitting diode of 600nm to 900nm.Using light source wave band in the present embodiment is the infrarede emitting diode of 880nm.The light that luminous organ 3 sends is returned through the diffuse-reflectance of external detection thing, then is detected by light-receiving device 4 sensing.
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 fenestra of transmitted light, is installed with filter lens 12 at fenestra.The light-emitting area of luminous organ 3 penetrates through fenestra and filter lens 12 near filter lens 12, the light sent, and forms fan-shaped light beam.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.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 infrared penetrate PC plastics.
PCB assembly 2 is shaped with the illuminating circuit being connected with luminous organ 3 and the signal output apparatus being connected with light-receiving device 4.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, power supply can be 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 is provided with Vout interface, Vin interface and GND interface.Vout interface with GND interface respectively two ends with the first electric capacity 82 be connected, 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 be parallel with first resistance the 84, first diode 85 at the two ends of the second electric capacity 83 and output branch road that out splice going splice 86 is constituted.
PCB assembly 2 includes processing chip 87.Optical modulator module includes light modulation audion 88.The colelctor electrode of light modulation audion 88 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 the polar capacitor 89 of ground connection.The emitter stage of light-receiving device 4 processes the GP2 interface of chip 87 by variable resistance 91 and the 3rd electric capacity 92 and amplifying triode 93 connection.
Light-receiving device 4 is the phototriode being connected with signal amplification module.If there being barrier diffuse-reflectance catacustic, light-receiving device 4 just can detect barrier.
Switch case 1 is square plastic casing, is preferably dimensioned to be 20mm*30mm.Installation PCB assembly 2, luminous organ 3 and the cavity 11 of light-receiving device 4 it is shaped with in the inside of switch case 1.
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 is connected with the inwall of switch case 1, 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, is shaped with two energy the first through hole 51 and the second through hole 52 by light in the inside of light source fixing part 5.Luminous organ 3 is fixed on the inside of the first through 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 fixed light source fixture 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 sensitivity and the output type of diffuse-reflectance formula photoswitch.Being provided with power supply indicator 94 and working station indicator 95 below light guide plate 6, power supply indicator 94 is connected with power interface by power branch.Working station indicator 95 is connected with the emitter stage of display lamp audion 96, 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 switch case 1, is fixed with PCB assembly 2, for sending the luminous organ 3 of detection light and returning the light-receiving device 4 of light for receiving reflection in switch case 1.
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 the first through hole 51, and is connected with PCB assembly 2.The light-emitting area of luminous organ 3, near filter lens 12, directly sends the light of sector.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.
Most preferred embodiment of the present utility model illustrates, those of ordinary skill in the art the various changes made or remodeling are all without departing from scope of the present utility model.
Claims (10)
1. the electric switch that diffuses, including switch case (1), it is fixed with PCB assembly (2) in described switch case (1), 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: the sidewall of described switch case (1) is shaped with the fenestra of transmitted light, at described fenestra, be installed with the infrared filter lens (12) penetrating PC plastics composition；Described luminous organ (3) and light-receiving device (4) are fixed on the side of described PCB assembly (2), and the light-emitting area of described luminous organ (3) is near described filter lens (12), and can send fan beam；Described luminous organ (3) is the infrarede emitting diode of a length of 600nm to 900nm of light wave；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 (11) of light-receiving device (4) it is shaped with in the inside of switch case (1)；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 the illuminating circuit being connected with luminous organ (3) and the signal output apparatus being connected with light-receiving device (4)；Described luminous organ (3) sends after detection light is reflected recurrence and is sensed by described light-receiving device (4), and exports 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 the optical modulator module that Power Entry Module, rectifying and voltage-stabilizing module are connected with luminous organ (3).
One the most according to claim 4 diffuses electric switch, it is characterized in that: described signal output apparatus includes signal amplification module, modulation circuit module, clocked logic module and the signal output module being connected with light-receiving device (4).
One the most according to claim 5 diffuses electric switch, it is characterized in that: described Power Entry Module includes power input interface；Described rectifying and voltage-stabilizing module includes power supply chip (81)；Described power supply chip (81) is 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 be parallel with the output branch road that the first resistance (84), the first diode (85) and out splice going splice (86) are constituted at the two ends of the second electric capacity (83).
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) is connected with described out splice going splice (86), 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 connect power input interface by the second resistance, and connecting at base terminal has the polar capacitor (89) of ground connection；The emitter stage of described light-receiving device (4) processes the GP2 interface of chip (87) by variable resistance (91) and the 3rd electric capacity (92) and amplifying triode (93) connection.
One the most according to claim 8 diffuses electric switch, it is characterized in that: in described cavity (11), be provided with light source fixing part (5), described light source fixing part (5) is arranged between filter lens (12) and PCB assembly (2), is shaped with two energy the first through hole (51) by light and the second through hole (52) in the inside of light source fixing part (5)；It is internal that described luminous organ (3) is fixed on the first through hole (51)；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) are shaped with 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 of described switch case (1) is provided with light guide plate (6) and the adjusting knob (7) being connected with PCB assembly (2)；Described light guide plate (6) lower section is provided with power supply indicator (94) and working station indicator (95), and described power supply indicator (94) is connected with power interface by power branch；Described working station indicator (95) is connected with the emitter stage of display lamp audion (96), the base stage connection of described display lamp audion (96) processes the GP5 interface of chip (87), and colelctor electrode connects power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620505906.3U CN205647484U (en) | 2016-05-30 | 2016-05-30 | Diffuse reflection photoelectric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620505906.3U CN205647484U (en) | 2016-05-30 | 2016-05-30 | Diffuse reflection photoelectric switch |
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| Publication Number | Publication Date |
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| CN205647484U true CN205647484U (en) | 2016-10-12 |
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| CN201620505906.3U Active CN205647484U (en) | 2016-05-30 | 2016-05-30 | Diffuse reflection photoelectric switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750885A (en) * | 2018-12-11 | 2019-05-14 | 黑龙江大学 | A kind of parking lot route guidance system based on FPGA |
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2016
- 2016-05-30 CN CN201620505906.3U patent/CN205647484U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750885A (en) * | 2018-12-11 | 2019-05-14 | 黑龙江大学 | A kind of parking lot route guidance system based on FPGA |
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Effective date of registration: 20170728 Address after: 315514, Zhejiang, Ningbo province Fenghua District Jiangkou Street Square Bridge Industrial Zone Hengfeng Road West End Patentee after: Xingyu electronic (Ningbo) Co. Ltd. Address before: 315514, Ningbo, Zhejiang province Fenghua Jiangkou Street Square Bridge Industrial Zone Hengfeng Road West End Patentee before: Ningbo Xingyu JiGuang Aurora Sensing AND Technology Co., Ltd. |