CN207884591U - Extra small light spot laser optoelectronic switch - Google Patents
Extra small light spot laser optoelectronic switch Download PDFInfo
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- CN207884591U CN207884591U CN201820338611.0U CN201820338611U CN207884591U CN 207884591 U CN207884591 U CN 207884591U CN 201820338611 U CN201820338611 U CN 201820338611U CN 207884591 U CN207884591 U CN 207884591U
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- operational amplifier
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Abstract
The utility model is related to a kind of extra small light spot laser optoelectronic switches, including semiconductor laser generator and signal processing system；Signal processing system include filtering and amplifying circuit module, ultra high speed A/D conversion circuit module, high speed FIFO circuit module, DSP control circuit modules, compare and screening circuit module, pixel count processing circuit module, signal designation output circuit module；Comparison and screening circuit module are made of third comparator, capacitance C2, C3, resistance R9, R10, R11 and light emitting diode D7；The positive input pin of third comparator is connect by resistance R11 with ultra high speed A/D conversion circuit module and high speed FIFO circuit module；The output end of third comparator connect with the common end of resistance R9, R10 and counts processing circuit module with pixel and connect；The utility model laser photoelectricity switch laser spot diameter is only 0.5mm, can reduce user's purchase cost, and for enriching the type of extra small hot spot optoelectronic switch, widely applicable property has positive effect, can preferably meet the market demand.
Description
Technical field：
The utility model belongs to optoelectronic switch technical field more particularly to industrial automation industry non-contact detection laser
Optoelectronic switch refers in particular to a kind of extra small light spot laser optoelectronic switch.
Background technology：
Present field of industrial production, many parts designs are very small and exquisite.Such as stitch of semicon industry chip, these
Detected object is due to being small items (diameter<1mm), if also to its stable detection.Existing photoelectric sensor, ultrasound
The sensors hot spot such as wave, sound wave is all bigger than normal, is not suitable for the detection of the detection such as tiny workpiece of chip stitch.
For this purpose, applicant once developed the laser sensor of a kind of super-small, extra small hot spot, however its scope of application
Also there is certain limitation, consider from the diversity of optoelectronic switch product and widely applicable property, cost etc., applicant thinks
It is necessary to adopt different circuit designs preferably to meet the market demand.
Utility model content：
The purpose of this utility model is to be to overcome the above-mentioned shortcoming of the prior art, provides a kind of extra small light spot laser
Optoelectronic switch.
The technical solution adopted in the utility model is：A kind of extra small light spot laser optoelectronic switch, the optoelectronic switch include half
Conductor Laser generator and signal processing system；The signal processing system includes filtering and amplifying circuit module, ultra high speed A/D conversion
Circuit module, high speed FIFO circuit module, DSP control circuit modules, compare and screening circuit module, pixel count processing circuit
Module, signal designation output circuit module；
Wherein, the semiconductor laser generator by first comparator, laser diode D1, D2, D3, D4, resistance R2,
R3, R4, adjustable resistance R5, capacitance C4 compositions, wherein resistance R2 connects with laser diode D1, D2, resistance R3 and two pole of laser
Pipe D3, D4 series connection, resistance R4 connects with adjustable resistance R5, in parallel after three groups of series connection, and latter public terminating resistor R1 in parallel is followed by
Power supply, another common end are connect with DSP control circuit modules；Positive input pin connection resistance R3 and the laser two of first comparator
Between pole pipe D3, negative input pin connects the adjustable side of adjustable resistance R5, and the power input of first comparator is connect with resistance R1；
The output end of first comparator is connect with DSP control circuit modules；The common end of one end connection resistance R2, R3, R4 of capacitance C4,
The other end connects DSP control circuit modules；
The DSP control circuit modules are by the second comparator, resistance R6, R7, R8, diode D5, light emitting diode D6, three
Pole pipe Q1, signal relay KS compositions, wherein the positive input pin of the second comparator is connect with capacitance C4, the second comparator
Negative input pin and the output end of first comparator connect；Resistance R6, R7 and light emitting diode D6 series connection, diode D5 and signal
It is connect with the emitter of triode Q1 after relay KS parallel connections；Common end and the electricity of resistance R6, diode D5, signal relay KS
Hinder the common end connection of R2, R3, R4；The collector of triode Q1 connect with light emitting diode D6 and with laser diode D2, D4
Common end connection；The output end of second comparator is connect with the common end of resistance R6, R7, and the base stage of triode Q1 is by electricity
It is also connect with the common end of resistance R6, R7 after resistance R8；
The comparison and screening circuit module are by third comparator, capacitance C2, C3, resistance R9, R10, R11 and luminous two
Pole pipe D7 compositions；Wherein, the positive input pin of third comparator passes through resistance R11 and ultra high speed A/D conversion circuit module and high speed
Fifo circuit module connects；The negative input pin of third comparator is grounded after capacitance C2, the ground connection pin of third comparator
It is grounded after capacitance C3；Resistance R10, R9, light emitting diode D7 series connection, the outer end of resistance R10 connects power supply, light emitting diode
The cathode of D7 is grounded；The output end of third comparator connect with the common end of resistance R9, R10 and counts processing circuit mould with pixel
Block connects；
The pixel counts processing circuit module and signal designation output circuit module by the first operational amplifier, capacitance
C1, resistance R12, R13, R14, R15, light emitting diode D8, diode D9 and triode Q2 are collectively constituted；Wherein, the first operation
The positive input pin of amplifier is connect with capacitance C1 and the capacitance C1 other ends are grounded, while the positive input of the first operational amplifier connects
Foot also pass through resistance R15 in DSP control circuit modules resistance R6, diode D5, signal relay KS common end connect；
The negative input pin of first operational amplifier is grounded after being connect with resistance R14；The output end and resistance of first operational amplifier
R12, R13, the cathode of diode D9, triode Q2 emitter connect jointly；The collection of the anode and triode Q2 of diode D9
Electrode connection and connection signal output end；The base stage of triode Q2 is connect with the first operational amplifier；Light emitting diode D8 is just
Pole is connected with resistance R12, the cathode ground connection of light emitting diode D8；
The filtering and amplifying circuit module is by second operational amplifier, resistance R23, R24, R25, R26, R27, R28 and electricity
Hold C6, C8, C9 composition, wherein the positive input pin of second operational amplifier connects by concatenated resistance R24, R23 and power supply
It connects；Resistance R26, R27, R28, capacitance C6, C8, C9 one end connect jointly, the other end and second operational amplifier of resistance R26
The connection of negative input pin, another termination power of resistance R27, the other end ground connection of resistance R28, the other end of capacitance C6 and half
Resistance R4 connections in conductor Laser generator, the other end of capacitance C8, C9 are connect with the common end of resistance R24, R23；Resistance
One end of R25 and the negative input pin of second operational amplifier connect, and the output end of the other end and second operational amplifier connects；
The output end of second operational amplifier is also connect with ultra high speed A/D conversion circuit module, high speed FIFO circuit module；
The ultra high speed A/D conversion circuit module and high speed FIFO circuit module by third operational amplifier, adjustable resistance R21,
Resistance R22, R29, capacitance C7 and triode Q3 connect composition jointly, wherein the positive input pin string of third operational amplifier
Connect with the output end of second operational amplifier after connection resistance R29, the positive input pin of third operational amplifier also with capacitance C7
Connection, capacitance C7 other ends ground connection；The adjustable side of the negative input pin connection adjustable resistance R21 of third operational amplifier, it is adjustable
The another both ends of resistance R21 connect power supply and ground connection respectively；The collector of triode Q3 and the output end of third operational amplifier and ratio
Compared with and the resistance R11 connections in the block of screening circuit mould, the base stage of triode Q3 connect with resistance R22 after with third operational amplifier
Connection；The emitter of triode Q3 is connect with the common end of resistance R6, diode D5, signal relay KS.
The utility model is designed by using foregoing circuit, and laser photoelectricity switch can be made to reach extra small hot spot and superhigh precision
Effect, laser spot diameter is only 0.5mm, can meet the requirement of installation space, particularly with high-accuracy intelligent equipment
Requirement, and can realize to diameter less than 1mm small items such as chip stitch, the similar articles such as hairline it is reliable and stable
Detection；Moreover, the circuit module of the utility model optoelectronic switch simplifies, cost is lower, can reduce user's purchase cost, for
Type, the widely applicable property of abundant extra small hot spot optoelectronic switch have positive effect, can preferably meet the market demand.
Description of the drawings：
Fig. 1 is the circuit diagram of the utility model laser photoelectricity switch.
Specific implementation mode：
The utility model is further illustrated with reference to specific embodiments and the drawings.
As shown in Figure 1, a kind of extra small light spot laser optoelectronic switch described in the utility model, which includes partly leading
Volumetric laser generator 1 and signal processing system；The signal processing system includes filtering and amplifying circuit module 2, ultra high speed A/D conversion
Circuit module 3, high speed FIFO circuit module 4, DSP control circuit modules 5, compare and screening circuit module 6, pixel counting processing
Circuit module 7, signal designation output circuit module 8；
The semiconductor laser generator 1 by first comparator 11, laser diode D1, D2, D3, D4, resistance R2, R3,
R4, adjustable resistance R5, capacitance C4 compositions, wherein resistance R2 connects with laser diode D1, D2, resistance R3 and laser diode
D3, D4 connect, and resistance R4 connects with adjustable resistance R5, in parallel after three groups of series connection, and latter public terminating resistor R1 in parallel is followed by electricity
Source, another common end are connect with DSP control circuit modules；Positive input pin connection resistance R3 and the laser two of first comparator 14
Between pole pipe D3, negative input pin connects the adjustable side of adjustable resistance R5, and power input and the resistance R1 of first comparator 14 connect
It connects；The output end of first comparator 14 is connect with DSP control circuit modules；The public affairs of one end connection resistance R2, R3, R4 of capacitance C4
End altogether, the other end connect DSP control circuit modules 5；
The DSP control circuit modules 5 are by the second comparator 51, resistance R6, R7, R8, diode D5, light emitting diode
D6, triode Q1, signal relay KS compositions, wherein the positive input pin of the second comparator 51 is connect with capacitance C4, the second ratio
Negative input pin compared with device 51 is connect with the output end of first comparator 14；Resistance R6, R7 and light emitting diode D6 series connection, two poles
Pipe D5 is connect with after signal relay KS parallel connections with the emitter of triode Q1；Resistance R6, diode D5, signal relay KS
Common end is connect with the common end of resistance R2, R3, R4；The collector of triode Q1 connect with light emitting diode D6 and with laser two
The common end of pole pipe D2, D4 connects；The output end of second comparator 51 is connect with the common end of resistance R6, R7, and triode Q1
Base stage also connect with the common end of resistance R6, R7 after resistance R8；
The comparison and screening circuit module 6 are by third comparator 61, capacitance C2, C3, resistance R9, R10, R11 and hair
Optical diode D7 compositions；Wherein, the positive input pin of third comparator 61 passes through resistance R11 and ultra high speed A/D conversion circuit module 3
It is connected with high speed FIFO circuit module 4；The negative input pin of third comparator 61 is grounded after capacitance C2, third comparator 61
Ground connection pin be grounded after capacitance C3；Resistance R10, R9, light emitting diode D7 series connection, the outer end of resistance R10 connect power supply,
The cathode of light emitting diode D7 is grounded；The output end of third comparator 61 connect with the common end of resistance R9, R10 and with pixel meter
Number processing circuit module 7 connects；
The pixel counts processing circuit module 7 and signal designation output circuit module 8 by the first operational amplifier 71, electricity
Hold C1, resistance R12, R13, R14, R15, light emitting diode D8, diode D9 and triode Q2 to collectively constitute；Wherein, the first fortune
The positive input pin for calculating amplifier 71 is connect with capacitance C1 and the capacitance C1 other ends are grounded, while the first operational amplifier 71 is just
Input the public affairs that pin also passes through a resistance R15 and resistance R6, diode D5, signal relay KS in DSP control circuit modules 5
End connection altogether；The negative input pin of first operational amplifier 71 is grounded after being connect with resistance R14；First operational amplifier 71 it is defeated
Outlet is connect jointly with the emitter of resistance R12, R13, the cathode of diode D9, triode Q2；The anode and three of diode D9
The collector of pole pipe Q2 connects and connection signal output end；The base stage of triode Q2 is connect with the first operational amplifier 71；It shines
The anode of diode D8 is connected with resistance R12, the cathode ground connection of light emitting diode D8；
The filtering and amplifying circuit module 2 by second operational amplifier 21, resistance R23, R24, R25, R26, R27, R28 and
Capacitance C6, C8, C9 composition, wherein the positive input pin of second operational amplifier 21 passes through concatenated resistance R24, R23 and power supply
Connection；Resistance R26, R27, R28, capacitance C6, C8, C9 one end connect jointly, the other end of resistance R26 and the second operation amplifier
The negative input pin of device 21 connects, another termination power of resistance R27, the other end ground connection of resistance R28, the other end of capacitance C6
It is connect with the resistance R4 in semiconductor laser generator, the other end of capacitance C8, C9 are connect with the common end of resistance R24, R23；
One end of resistance R25 is connect with the negative input pin of second operational amplifier 21, and the other end is defeated with second operational amplifier 21
Outlet connects；The output end of second operational amplifier 21 also connects with ultra high speed A/D conversion circuit module 3, high speed FIFO circuit module 4
It connects；
The ultra high speed A/D conversion circuit module 3 and high speed FIFO circuit module 4 are by third operational amplifier 31, adjustable resistance
R21, resistance R22, R29, capacitance C7 and triode Q3 connect composition jointly, wherein the positive input of third operational amplifier 31
It is connect with the output end of second operational amplifier 21 after pin series resistance R29, the positive input pin of third operational amplifier 31
It is also connect with capacitance C7, capacitance C7 other ends ground connection；The negative input pin connection adjustable resistance R21's of third operational amplifier 31
The another both ends of adjustable side, adjustable resistance R21 connect power supply and ground connection respectively；The collector of triode Q3 and third operational amplifier 31
Output end with compare and screening circuit module 6 in resistance R11 connect, the base stage of triode Q3 connect with resistance R22 after with
Third operational amplifier 31 connects；The emitter of triode Q3 and the common end of resistance R6, diode D5, signal relay KS connect
It connects.
The utility model is designed by using foregoing circuit, can make laser sensor reach super-small, extra small hot spot and
The effect of superhigh precision, laser spot diameter are only 0.5mm, can meet the requirement of installation space, particularly with high-accuracy intelligence
The requirement of equipment can be changed, and can realize the stitch of the small items such as chip to diameter less than 1mm, the similar articles such as hairline
Reliable and stable detection；Moreover, the circuit module of the utility model optoelectronic switch simplifies, cost is lower, can reduce user's buying
Cost, for enriching the type of extra small hot spot optoelectronic switch, widely applicable property has positive effect, can preferably meet market need
It asks.
The beneficial effects of the utility model are mainly reflected in：
1：The design of extra small laser facula is realized to small items (diameter<1mm) reliable and stable detection.
2：The design of extra small laser facula, can be to the object (diameter of diameter very little<1mm) (stitch of such as chip, hair
Silk) it can realize reliable and stable detection.
3：The design of extra small laser facula can realize high-precision positioning, limit etc. to object to be detected.
4：The design of extra small laser facula, can be to object to be detected reality in factory on a large scale large batch of production process
Existing high-precision repeatable accuracy, to ensure that product quality, the coherence request of performance.
5：The light source of selection be laser light source, almost thus object to be detected (metal, nonmetallic) can realize surely
Fixed reliable non-contact detecting, there is no the surfaces for damaging or damaging detection object.
6：By ingehious design, realize super-small, while extra small hot spot, cost be imported product three/
One, to reduce the purchase cost of client.
Claims (1)
1. a kind of extra small light spot laser optoelectronic switch, it is characterised in that：The optoelectronic switch includes semiconductor laser generator and letter
Number processing system；The signal processing system includes filtering and amplifying circuit module, ultra high speed A/D conversion circuit module, high speed FIFO electricity
Road module, DSP control circuit modules, compare and screening circuit module, pixel count processing circuit module, signal designation output electricity
Road module；
Wherein, the semiconductor laser generator by first comparator, laser diode D1, D2, D3, D4, resistance R2, R3, R4,
Adjustable resistance R5, capacitance C4 compositions, wherein resistance R2 connects with laser diode D1, D2, resistance R3 and laser diode D3,
D4 connects, and resistance R4 connects with adjustable resistance R5, in parallel after three groups of series connection, and latter public terminating resistor R1 in parallel is followed by power supply,
Another common end is connect with DSP control circuit modules；The positive input pin connection resistance R3 and laser diode of first comparator
Between D3, negative input pin connects the adjustable side of adjustable resistance R5, and the power input of first comparator is connect with resistance R1；First
The output end of comparator is connect with DSP control circuit modules；The common end of one end connection resistance R2, R3, R4 of capacitance C4, it is another
End connection DSP control circuit modules；
The DSP control circuit modules are by the second comparator, resistance R6, R7, R8, diode D5, light emitting diode D6, triode
Q1, signal relay KS compositions, wherein the positive input pin of the second comparator is connect with capacitance C4, and bearing for the second comparator is defeated
The output end for entering pin and first comparator connects；Resistance R6, R7 and light emitting diode D6 series connection, diode D5 and signal relay
It is connect with the emitter of triode Q1 after device KS parallel connections；Resistance R6, diode D5, the common end of signal relay KS and resistance
The common end of R2, R3, R4 connect；The collector of triode Q1 connect with light emitting diode D6 and with laser diode D2, D4
Common end connects；The output end of second comparator is connect with the common end of resistance R6, R7, and the base stage of triode Q1 passes through resistance
It is also connect with the common end of resistance R6, R7 after R8；
The comparison and screening circuit module are by third comparator, capacitance C2, C3, resistance R9, R10, R11 and light emitting diode
D7 is formed；Wherein, the positive input pin of third comparator passes through resistance R11 and ultra high speed A/D conversion circuit module and high speed FIFO electricity
Road module connection；The negative input pin of third comparator is grounded after capacitance C2, and the ground connection pin of third comparator is by electricity
It is grounded after holding C3；The outer end of resistance R10, R9, light emitting diode D7 series connection, resistance R10 connects power supply, and light emitting diode D7's is negative
Pole is grounded；The output end of third comparator, which connect with the common end of resistance R9, R10 and counts processing circuit module with pixel, to be connected
It connects；
The pixel counts processing circuit module and signal designation output circuit module by the first operational amplifier, capacitance C1, electricity
Resistance R12, R13, R14, R15, light emitting diode D8, diode D9 and triode Q2 are collectively constituted；Wherein, the first operational amplifier
Positive input pin connect with capacitance C1 and the capacitance C1 other ends are grounded, while the positive input pin of the first operational amplifier also passes through
Cross resistance R15 in DSP control circuit modules resistance R6, diode D5, signal relay KS common end connect；First fortune
The negative input pin of calculation amplifier is grounded after being connect with resistance R14；The output end and resistance R12, R13 of first operational amplifier,
The cathode of diode D9, the emitter of triode Q2 connect jointly；The anode of diode D9 is connect with the collector of triode Q2
And connection signal output end；The base stage of triode Q2 is connect with the first operational amplifier；The anode and resistance of light emitting diode D8
R12 connects, the cathode ground connection of light emitting diode D8；
The filtering and amplifying circuit module by second operational amplifier, resistance R23, R24, R25, R26, R27, R28 and capacitance C6,
C8, C9 are formed, wherein the positive input pin of second operational amplifier is connected by concatenated resistance R24, R23 and power supply；Resistance
R26, R27, R28, capacitance C6, C8, C9 one end connect jointly, the other end of resistance R26 and second operational amplifier it is negative defeated
Enter pin connection, another termination power of resistance R27, the other end ground connection of resistance R28, the other end and the semiconductor of capacitance C6 swash
Resistance R4 connections in optical generator, the other end of capacitance C8, C9 are connect with the common end of resistance R24, R23；The one of resistance R25
End is connect with the negative input pin of second operational amplifier, the output end connection of the other end and second operational amplifier；Second fortune
The output end for calculating amplifier is also connect with ultra high speed A/D conversion circuit module, high speed FIFO circuit module；
The ultra high speed A/D conversion circuit module and high speed FIFO circuit module are by third operational amplifier, adjustable resistance R21, resistance
R22, R29, capacitance C7 and triode Q3 connect composition jointly, wherein the positive input pin series electrical of third operational amplifier
It being connect with the output end of second operational amplifier after resistance R29, the positive input pin of third operational amplifier is also connect with capacitance C7,
The capacitance C7 other ends are grounded；The adjustable side of the negative input pin connection adjustable resistance R21 of third operational amplifier, adjustable resistance
The another both ends of R21 connect power supply and ground connection respectively；The collector of triode Q3 and the output end of third operational amplifier and compared with and
The resistance R11 connections in the block of screening circuit mould, the base stage of triode Q3 connect after connecting with resistance R22 with third operational amplifier
It connects；The emitter of triode Q3 is connect with the common end of resistance R6, diode D5, signal relay KS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820338611.0U CN207884591U (en) | 2018-03-12 | 2018-03-12 | Extra small light spot laser optoelectronic switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820338611.0U CN207884591U (en) | 2018-03-12 | 2018-03-12 | Extra small light spot laser optoelectronic switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207884591U true CN207884591U (en) | 2018-09-18 |
Family
ID=63496841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820338611.0U Expired - Fee Related CN207884591U (en) | 2018-03-12 | 2018-03-12 | Extra small light spot laser optoelectronic switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207884591U (en) |
-
2018
- 2018-03-12 CN CN201820338611.0U patent/CN207884591U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180918 |