CN207473451U - Card reader photoelectric sensor antidusting regulating circuit - Google Patents
Card reader photoelectric sensor antidusting regulating circuit Download PDFInfo
- Publication number
- CN207473451U CN207473451U CN201721597453.2U CN201721597453U CN207473451U CN 207473451 U CN207473451 U CN 207473451U CN 201721597453 U CN201721597453 U CN 201721597453U CN 207473451 U CN207473451 U CN 207473451U
- Authority
- CN
- China
- Prior art keywords
- photoelectric sensor
- card reader
- resistance
- model
- antidusting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 12
- 239000000428 dust Substances 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims abstract description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 3
- 238000005868 electrolysis reaction Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
Landscapes
- Electric Vacuum Cleaner (AREA)
Abstract
The utility model provides a kind of card reader photoelectric sensor antidusting regulating circuit, including inductance L1（1）, diode D1（2）, diode D2（3）, resistance R1（4）, resistance R2（5）, resistance R3（6）, resistance R5（7）, NPN type triode Q1（8）, electrolytic capacitor C1（9）, correlation photoelectric sensor U1（10）, resistance R4（11）, comparator U2A（12）.The utility model is in photoelectric sensor U1（10）Compare it is clean in the case of, pass through D1（2）、R1（4）For correlation photoelectric sensor U1（10）Emitting stage provide driving current, emit beam and be enough to drive receiving terminal；In correlation photoelectric sensor U1（10）In the case that dust is more or messy, photoelectric sensor U1（10）Receiving terminal can not obtain enough optical signals, and microcontroller can be judged by accident and be covered by card, and circuit can pass through L1 at this time（1）、D2（3）、Q1（8）And C1（9）The boosting circuit boosts correlation photoelectric sensor U1 of composition（10）Emitting stage driving current promotes the anti-dust ability of card reader photoelectric sensor with this.
Description
Technical field
The utility model is related to a kind of card reader photoelectric sensor antidusting regulating circuits.
Background technology
At present, correlation photoelectric sensor driving circuit designs, and typically transmitting terminal driving current is controlled in maximum
The 20% to 40% of electric current, can either ensure the sensitivity of photoelectric sensor in this way, also can guarantee its service life.This card reader is mainly used
In the self-service device of bank, such as ATM, card sender, self-aided terminal etc., not use is in enclosed environment, so amount of dust
It is very big, and have multiple correlation photoelectric sensings in card reader, it is easy to dust is infected with, to dust sensitivity, needs periodically to clean dimension
It protects, under normal use environment, at least needs cleaning 4 times within 1 year, a large amount of manpower and materials can be wasted in this way, while improve failure
Rate.If maximum current is provided in correlation photoelectric sensor transmitting terminal, then correlation photoelectric sensor can be old quickly always
Change damage, greatly reduce the service life, maintenance rate and maintenance cost can all steeply rise.
Utility model content
The utility model to solve the above-mentioned problems, provides a kind of card reader photoelectric sensor antidusting regulating circuit.
The circuit can pass through boosting circuit boosts photoelectric sensor transmitting terminal in the case where photoelectric sensor is covered by dust
Driving current increases luminous intensity and penetrates dust, erroneous judgement caused by reducing dust with this.Card reader can be passed using the invention
Sensor maintenance times are reduced to 1 year 1 time from 1 year 4 times, and card reader failure rate is reduced to 3% from 9%.Therefore card reader is promoted to use
Photoelectric sensor anti-dust ability, while by adjusting the duty cycle square wave of boost signal input terminal so that photoelectric sensor is sent out
Penetrating end driving current can't work long hours in maximum operating currenbt, so there are few shadows to the service life of photoelectric sensor
It rings.
To achieve the above object, the technical solution adopted in the utility model is：It includes inductance L1（1）, diode D1
（2）, diode D2（3）, resistance R1（4）, resistance R2（5）, resistance R3（6）, resistance R5（7）, NPN type triode Q1（8）, electrolysis
Capacitance C1（9）, correlation photoelectric sensor U1（10）, resistance R4（11）, comparator U2A（12）.+ 5 volt power supply, D1（2）、
R1（4）To U1（10）Transmitting terminal provides 15 milliamperes of driving current, in normal state, the light that transmitting terminal is sent out, if do not had
There is card to cover, enable to U1（10）Receiving terminal generates 0.3 volt of low-voltage, this low level passes to U2A（12）Pin 2,
So as to U2A（12）Pin 1 generates a high level and is passed to microcontroller GPIO pin, and microcontroller correctly judges that no card hides
Firmly this sensor；+ 5 volt power supply, L1（1）、Q1（8）、D2（3）、C1（9）Form booster circuit, U1（10）Correlation photoelectricity
Sensor is covered by dust, and microcontroller is judged this photoelectric sensor by accident and covered by dust, and microcontroller sends out instruction in boost signal
Input terminal exports 10KHz to 100KHz square-wave signals, utilizes C1（9）Energy storage and D2（3）Buffer action, in C1（9）Anode shape
Into+6 volts extremely+10 volt voltages, therefore U1（10）Correlation photoelectric sensor transmitting terminal forms 20 milliamperes to 50 milliamperes of driving electricity
Stream promotes the anti-dust ability of card reader photoelectric sensor with this.
Further, the D1（2）Anode meets+5 volt power supplys, D1（2）Cathode meets D2（3）Cathode, R1（4）Upper end, C1（9）
Anode；The L1（1）Head end meets+5 volt power supplys, L1（1）Tail end meets D2（3）Anode and Q1（8）Collector；The Q1（8）Base stage
Meet boost signal input terminal, Q1（8）Emitter is grounded；The C1（9）Negativing ending grounding；The R1（4）Lower termination U1（10）Transmitting
Pole anode；The U1（10）Transmitting terminal cathode is grounded, U1（10）Receiving terminal emitter is grounded, U1（10）Receiving terminal collector meets R2
（5）Lower end and U2A（12）Pin 2；The R2（5）+ 5 volt power supplys of upper termination, R3（6）Upper end, R5（7）Upper end, U2A（12）Pin
4；The R3（6）Lower termination R4（11）Upper end and U2A（12）Pin 3；The R4（11）Lower end is grounded；The U2A（12）Pin 8
Ground connection, U2A（12）Pin 1 meets R5（7）GPIO mouthfuls of lower end and 8051 microcontroller.
The triode transistor Q1（8）Model 2SD965.
The correlation photoelectric sensor U1（10）Model ST120.
The comparator U2A（12）Model LM393P.
The diode D1（2）、D2（3）Model 1N4148.
The electrolytic capacitor C1（9）Model 16V470UF.
The utility model has the advantages that：The feelings that the utility model can be covered in photoelectric sensor by dust
Under condition, by the driving current of boosting circuit boosts photoelectric sensor transmitting terminal, increase luminous intensity and penetrate dust, reduced with this
The erroneous judgement that dust generates.Card reader sensor maintenance number from 1 year 4 times can be reduced to 1 year 1 time, will read using the invention
Card device failure rate is reduced to 3% from 9%.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property
It puts, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structure diagram of the utility model.
Specific embodiment
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
It clearly and completely describes, it is clear that the described embodiments are only a part of the embodiments of the utility model rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are without creative efforts
All other embodiments obtained shall fall within the protection scope of the present invention.
As shown in Figure 1, card reader includes inductance L1 with photoelectric sensor antidusting regulating circuit（1）, diode D1（2）, two
Pole pipe D2（3）, resistance R1（4）, resistance R2（5）, resistance R3（6）, resistance R5（7）, NPN type triode Q1（8）, electrolytic capacitor C1
（9）, correlation photoelectric sensor U1（10）, resistance R4（11）, comparator U2A（12）.+ 5 volt power supply, D1（2）、R1（4）
To U1（10）Transmitting terminal provides 15 milliamperes of driving current, in normal state, the light that transmitting terminal is sent out, if without card
It covers, enables to U1（10）Receiving terminal generates+0.3 volt low-voltage, this low level passes to U2A（12）Pin 2, so as to
U2A（12）Pin 1 generates a high level and is passed to microcontroller GPIO pin, and microcontroller correctly judges that no card covers this
Sensor；+ 5 volt power supply, L1（1）、Q1（8）、D2（3）、C1（9）Form booster circuit, U1（10）Correlation photoelectric sensing
Device is covered by dust, and microcontroller is judged this photoelectric sensor by accident and covered by dust, and microcontroller sends out instruction and inputted in boost signal
End output 10KHz utilizes C1 to 100KHz square-wave signals（9）Energy storage and D2（3）Buffer action, in C1（9）Anode formed+6
Volt extremely+10 volt voltages, U1（10）Correlation photoelectric sensor transmitting terminal forms 20 milliamperes to 50 milliamperes of driving current, is carried with this
Rise the anti-dust ability of card reader photoelectric sensor.The D1（2）Anode meets+5 volt power supplys, D1（2）Cathode meets D2（3）It is negative
Pole, R1（4）Upper end, C1（9）Anode；The L1（1）Head end meets+5 volt power supplys, L1（1）Tail end meets D2（3）Anode and Q1（8）Collection
Electrode；The Q1（8）Base stage meets boost signal input terminal, Q1（8）Emitter is grounded；The C1（9）Negativing ending grounding；The R1
（4）Lower termination U1（10）Emitter anode；The U1（10）Transmitting terminal cathode is grounded, U1（10）Receiving terminal emitter is grounded, U1
（10）Receiving terminal collector meets R2（5）Lower end and U2A（12）Pin 2；The R2（5）+ 5 volt power supplys of upper termination, R3（6）Upper end,
R5（7）Upper end, U2A（12）Pin 4；The R3（6）Lower termination R4（11）Upper end and U2A（12）Pin 3；The R4（11）Lower end
Ground connection；The U2A（12）Pin 8 is grounded, U2A（12）Pin 1 meets R5（7）GPIO mouthfuls of lower end and 8051 microcontroller.Three pole
Transistor Q1（8）Model 2SD965.The correlation photoelectric sensor U1（10）Model ST120.The comparator
U2A（12）Model LM393P.The diode D1（2）、D2（3）Model 1N4148.The electrolytic capacitor C1（9）'s
Model 16V470UF.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (6)
1. card reader photoelectric sensor antidusting regulating circuit it is characterized in that：Including inductance L1（1）, diode D1（2）, two poles
Pipe D2（3）, resistance R1（4）, resistance R2（5）, resistance R3（6）, resistance R5（7）, NPN type triode Q1（8）, electrolytic capacitor C1
（9）, correlation photoelectric sensor U1（10）, resistance R4（11）, comparator U2A（12）；The D1（2）Anode connects+5 volt power supplys,
D1（2）Cathode meets D2（3）Cathode, R1（4）Upper end, C1（9）Anode；The L1（1）Head end meets+5 volt power supplys, L1（1）Tail end connects
D2（3）Anode and Q1（8）Collector；The Q1（8）Base stage meets boost signal input terminal, Q1（8）Emitter is grounded；The C1
（9）Negativing ending grounding；The R1（4）Lower termination U1（10）Emitter anode；The U1（10）Transmitting terminal cathode is grounded, U1（10）It connects
Receiving end emitter is grounded, U1（10）Receiving terminal collector meets R2（5）Lower end and U2A（12）Pin 2；The R2（5）Upper termination+5
Lie prostrate power supply, R3（6）Upper end, R5（7）Upper end, U2A（12）Pin 4；The R3（6）Lower termination R4（11）Upper end and U2A（12）Draw
Foot 3；The R4（11）Lower end is grounded；The U2A（12）Pin 8 is grounded, U2A（12）Pin 1 meets R5（7）Lower end and 8051 monolithics
GPIO mouthfuls of machine；+ 5 volt power supply, D1（2）、R1（4）To U1（10）Transmitting terminal provides 15 milliamperes of driving current, in normal shape
Under state, light that transmitting terminal is sent out if no card covers, enables to U1（10）Receiving terminal generates 0.3 volt of low electricity
Pressure, this low level pass to U2A（12）Pin 2, so as to U2A（12）Pin 1 generates a high level and is passed to microcontroller GPIO pin,
Microcontroller correctly judges that no card covers this sensor；+ 5 volt power supply, L1（1）、Q1（8）、D2（3）、C1（9）Group
Into booster circuit, U1（10）Correlation photoelectric sensor is covered by dust, and microcontroller is judged this photoelectric sensor by accident and hidden by dust
Firmly, microcontroller sends out instruction and exports 10KHz to 100KHz square-wave signals in boost signal input terminal, utilizes C1（9）Energy storage and D2
（3）Buffer action, in C1（9）Anode formed+10 volt voltages, U1（10）Correlation photoelectric sensor transmitting terminal forms 20 milliamperes
To 50 milliamperes of driving current, card reader photoelectric sensor anti-dust ability is promoted with this.
2. card reader according to claim 1 photoelectric sensor antidusting regulating circuit it is characterized in that：Described three is extremely brilliant
Body pipe Q1（8）Model 2SD965.
3. card reader according to claim 1 photoelectric sensor antidusting regulating circuit it is characterized in that：The correlation
Photoelectric sensor U1（10）Model ST120.
4. card reader according to claim 1 photoelectric sensor antidusting regulating circuit it is characterized in that：The comparator
U2A（12）Model LM393P.
5. card reader according to claim 1 photoelectric sensor antidusting regulating circuit it is characterized in that：The diode
D1（2）、D2（3）Model 1N4148.
6. card reader according to claim 1 photoelectric sensor antidusting regulating circuit it is characterized in that：The electrolysis electricity
Hold C1（9）Model 16V470UF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721597453.2U CN207473451U (en) | 2017-11-27 | 2017-11-27 | Card reader photoelectric sensor antidusting regulating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721597453.2U CN207473451U (en) | 2017-11-27 | 2017-11-27 | Card reader photoelectric sensor antidusting regulating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207473451U true CN207473451U (en) | 2018-06-08 |
Family
ID=62258548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721597453.2U Expired - Fee Related CN207473451U (en) | 2017-11-27 | 2017-11-27 | Card reader photoelectric sensor antidusting regulating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207473451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107885272A (en) * | 2017-11-27 | 2018-04-06 | 昆明理工大学津桥学院 | Card reader photoelectric sensor antidusting regulating circuit |
-
2017
- 2017-11-27 CN CN201721597453.2U patent/CN207473451U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107885272A (en) * | 2017-11-27 | 2018-04-06 | 昆明理工大学津桥学院 | Card reader photoelectric sensor antidusting regulating circuit |
| CN107885272B (en) * | 2017-11-27 | 2023-12-19 | 昆明理工大学津桥学院 | Photoelectric sensor dust-proof voltage regulating circuit for card reader |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105634306A (en) | AC-DC power output system | |
| CN204028258U (en) | A kind of LED light source load detecting circuit of electric ballast | |
| CN209593090U (en) | A kind of power-down retaining circuit | |
| CN205229291U (en) | Voltage signal collection system | |
| CN207473451U (en) | Card reader photoelectric sensor antidusting regulating circuit | |
| CN101752827B (en) | Overvoltage, under-voltage and hysteresis protection circuit of input voltage | |
| CN211152266U (en) | A light-sensing drive circuit and lamp | |
| CN208902787U (en) | A kind of instantaneous residual voltage detection circuit that parameter can be set | |
| CN103674241B (en) | A kind of photosensitive circuit detecting photosensor signal | |
| CN202172506U (en) | Light emitting diode (LED) drive circuit and constant current feedback circuit in same | |
| CN107885272A (en) | Card reader photoelectric sensor antidusting regulating circuit | |
| CN210932866U (en) | Human body infrared induction ultraviolet disinfection lamp with light control function | |
| CN203535107U (en) | Low power AC power-off alarming circuit | |
| CN204904765U (en) | Arc LED display screen based on handwriting input technique | |
| CN204906816U (en) | Two -wire system LED drive control integrated circuit that power supply and signal combined together | |
| CN204231720U (en) | Lighting control circuit and electronic switch thereof | |
| CN204858268U (en) | Laser -driven ware | |
| CN208860939U (en) | A kind of LED light output signal real-time monitoring system | |
| CN208175046U (en) | A kind of linear constant current LED light with light-sensing function | |
| CN202101074U (en) | Composite LED (light emitting diode) voice-controlled lighting lamp | |
| CN207926440U (en) | It is violating the regulations to capture camera system high current voltage stabilizing circuit module | |
| CN206993066U (en) | A kind of electric charge release circuit and ultraviolet light detection module for ultraviolet phototube | |
| CN211629457U (en) | Circuit structure of LED night lamp | |
| CN206442103U (en) | A kind of inexpensive high-definition digital sound equipment multichannel short-circuit protection circuit | |
| CN204287366U (en) | A kind of pick-up unit of photovoltaic module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20181127 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |