CN108882447A - A kind of light-operated circuit - Google Patents
A kind of light-operated circuit Download PDFInfo
- Publication number
- CN108882447A CN108882447A CN201810657658.8A CN201810657658A CN108882447A CN 108882447 A CN108882447 A CN 108882447A CN 201810657658 A CN201810657658 A CN 201810657658A CN 108882447 A CN108882447 A CN 108882447A
- Authority
- CN
- China
- Prior art keywords
- resistance
- capacitor
- window comparator
- signal
- voltage window
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Amplifiers (AREA)
Abstract
The present invention relates to a kind of light-operated circuit, including sequentially connected photistor, voltage window comparator and feedback amplifier, the photistor converts optical signals to electric signal and is delivered to voltage window comparator for receiving optical signal；The voltage window comparator is delivered to the adjusting that main control MCU carries out LED light source for the voltage of electric signal to be compared with reference voltage, and by the signal after comparison；The feedback amplifier feeds back the input terminal to voltage window comparator for amplifying the signal that voltage window comparator exports, and by amplified signal.Light-operated circuit of the invention is simple, at low cost using discrete component, structure, the timely locking signal of feedback amplifier, will appear light source will not when daytime is with the critical state of conversion at night and the unstable states such as flashes or repeatedly convert back and forth.
Description
Technical field
The present invention relates to the technical fields of LED illumination, are concretely a kind of light-operated circuits.
Background technique
Present outdoor lighting and public place illumination, it is desirable that realize the function of turning off the light, turn on light at night daytime, most lamps and lanterns
It cannot be automatically performed, need manually to go switch or computer system control；Light-operated circuit in the market is converted on daytime and at night
Critical state when will appear flashing or repeatedly back and forth conversion etc. unstable states, high failure rate.
Summary of the invention
For overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of light-operated circuits of reliable performance.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of light-operated circuit, including sequentially connected photistor, voltage window comparator and feedback amplifier, it is described
Photistor converts optical signals to electric signal and is delivered to voltage window comparator for receiving optical signal；The voltage
Signal after comparison is delivered to main control MCU for being compared the voltage of electric signal with reference voltage by window comparator
Carry out the adjusting of LED light source；The feedback amplifier is used to amplify the signal that voltage window comparator exports, and will
Input terminal of the amplified signal feedback to voltage window comparator.
Further, the voltage window comparator includes resistance R1, resistance R2, resistance R3, resistance R4 and operational amplifier,
The first end of the resistance R1 connects 5V power supply, and the second end of the resistance R1 is separately connected the collector and fortune of photistor
The electrode input end of amplifier is calculated, the first end of the resistance R2 connects 5V power supply, and the second end of the resistance R2 connects operation
The negative input of amplifier, the resistance R3 that the second end of the resistance R2 is also concatenated connect photistor with resistance R4
Emitter, the output end of the operational amplifier connects main control MCU.
Further, the feedback amplifier includes the base stage warp of triode Q1, resistance R5 and resistance R6, the triode Q1
Resistance R6 connection main control MCU, the base stage of the triode are also grounded through resistance R5, and the emitter connection of the triode Q1 is photosensitive
The emitter of the emitter of transistor, the triode Q1 is also grounded, and the collector of the triode Q1 is transported through resistance R3 connection
The negative input of amplifier is calculated, the resistance R4 is connected between the emitter and collector of triode Q1.
It further, further include capacitor C1, capacitor C2 and capacitor C3, the capacitor C1, capacitor C2 and capacitor C3 are filtered electrical
Hold, the capacitor C1 is connected between the emitter and collector of photistor, and the capacitor C2 is in parallel with resistance R4, described
Capacitor C3 is in parallel with resistance R5.
The beneficial effects of the invention are as follows：Light-operated circuit of the invention is simple, at low cost using discrete component, structure, feedback
The timely locking signal of amplifier, make light source will not daytime and at night conversion critical state when will appear flashing or repeatedly back and forth
The unstable states such as conversion.
Detailed description of the invention
Further description of the specific embodiments of the present invention with reference to the accompanying drawing：
Fig. 1 is circuit diagram of the invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is implemented below in conjunction with attached drawing
Technical solution in example is clearly and completely described, it is clear that described embodiment is only the implementation of present invention a part
Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained under the premise of labour, should fall within the scope of the present invention.
Referring to Fig.1, a kind of light-operated circuit, including sequentially connected photistor, voltage window comparator and feedback are put
Big device, the photistor convert optical signals to electric signal and are delivered to voltage window comparator for receiving optical signal；
Signal after comparison is delivered to by the voltage window comparator for being compared the voltage of electric signal with reference voltage
The adjusting of main control MCU progress LED light source；The feedback amplifier is for putting the signal that voltage window comparator exports
Greatly, and by amplified signal the input terminal to voltage window comparator is fed back.
The voltage window comparator includes resistance R1, resistance R2, resistance R3, resistance R4 and operational amplifier, the electricity
The first end for hindering R1 connects 5V power supply, and the second end of the resistance R1 is separately connected the collector of photistor and operation is put
The electrode input end of big device, the first end of the resistance R2 connect 5V power supply, and the second end of the resistance R2 connects operation amplifier
The negative input of device, the resistance R3 that the second end of the resistance R2 is also concatenated connect the transmitting of photistor with resistance R4
The output end of pole, the operational amplifier connects main control MCU.The feedback amplifier includes triode Q1, resistance R5 and resistance
Through resistance R6 connection main control MCU, the base stage of the triode is also grounded through resistance R5 the base stage of R6, the triode Q1, described
The emitter of the emitter connection photistor of triode Q1, the emitter of the triode Q1 are also grounded, the triode
Negative input of the collector of Q1 through resistance R3 connection operational amplifier, the resistance R4 are connected to the transmitting of triode Q1
Between pole and collector.The light-operated circuit further includes capacitor C1, capacitor C2 and capacitor C3, the capacitor C1, capacitor C2 and electricity
Appearance C3 is filter capacitor, and the capacitor C1 is connected between the emitter and collector of photistor, the capacitor C2 and electricity
It is in parallel to hinder R4, the capacitor C3 is in parallel with resistance R5.
Implementation process of the invention is：Resistance R1, resistance R2, resistance R3, resistance R4 and operational amplifier form voltage window
Mouth comparator；Capacitor C1, capacitor C2 are filter capacitor, prevent interference signal from sealing in；Triode Q1, resistance R6, resistance R5 composition
Feedback amplifier；Capacitor C3 is filter capacitor, prevents interference signal from sealing in；PT1 is photistor, when receiving optical signal
When, electric signal is converted optical signals to, and be sent to voltage window comparator and handled, by opamp-output signal to master
MCU is controlled to adjust LED light source, and the input terminal fed back after being amplified again by feedback amplifier to voltage window comparator locks
Signal, make circuit will not daytime and at night conversion critical state when will appear flashing or repeatedly back and forth conversion etc. it is unstable
State.
In conclusion the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although referring to before
Stating embodiment, invention is explained in detail, those skilled in the art should understand that；It still can be to preceding
It states technical solution documented by each embodiment to modify, or is equivalently replaced to being wherein no lack of technical characteristic, and these
It modifies or replaces, the spirit and scope for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (4)
1. a kind of light-operated circuit, it is characterised in that：It is put including sequentially connected photistor, voltage window comparator and feedback
Big device, the photistor convert optical signals to electric signal and are delivered to voltage window comparator for receiving optical signal；
Signal after comparison is delivered to by the voltage window comparator for being compared the voltage of electric signal with reference voltage
The adjusting of main control MCU progress LED light source；The feedback amplifier is for putting the signal that voltage window comparator exports
Greatly, and by amplified signal the input terminal to voltage window comparator is fed back.
2. a kind of light-operated circuit according to claim 1, it is characterised in that：The voltage window comparator includes resistance
The first end of R1, resistance R2, resistance R3, resistance R4 and operational amplifier, the resistance R1 connects 5V power supply, the resistance R1's
Second end is separately connected the collector of photistor and the electrode input end of operational amplifier, and the first end of the resistance R2 connects
5V power supply, the negative input of the second end connection operational amplifier of the resistance R2 are connect, the second end of the resistance R2 also passes through
Concatenated resistance R3 connects the emitter of photistor with resistance R4, and the output end of the operational amplifier connects main control MCU.
3. a kind of light-operated circuit according to claim 2, it is characterised in that：The feedback amplifier include triode Q1,
The base stage of resistance R5 and resistance R6, the triode Q1 are through resistance R6 connection main control MCU, and the base stage of the triode is also through resistance
R5 ground connection, the emitter of the emitter connection photistor of the triode Q1, the emitter of the triode Q1 are also grounded,
Negative input of the collector of the triode Q1 through resistance R3 connection operational amplifier, the resistance R4 are connected to triode
Between the emitter and collector of Q1.
4. a kind of light-operated circuit according to claim 3, it is characterised in that：It further include capacitor C1, capacitor C2 and capacitor C3,
The capacitor C1, capacitor C2 and capacitor C3 are filter capacitor, and the capacitor C1 is connected to the emitter and current collection of photistor
Between pole, the capacitor C2 is in parallel with resistance R4, and the capacitor C3 is in parallel with resistance R5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810657658.8A CN108882447B (en) | 2018-06-25 | 2018-06-25 | Light-operated circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810657658.8A CN108882447B (en) | 2018-06-25 | 2018-06-25 | Light-operated circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108882447A true CN108882447A (en) | 2018-11-23 |
| CN108882447B CN108882447B (en) | 2020-09-22 |
Family
ID=64294503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810657658.8A Active CN108882447B (en) | 2018-06-25 | 2018-06-25 | Light-operated circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108882447B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247897Y (en) * | 1995-12-15 | 1997-02-19 | 杨俊才 | infrared light controlled switch |
| CN201937932U (en) * | 2010-09-30 | 2011-08-17 | 程小莉 | Automatic indoor lamp light dimmer |
| CN103716941A (en) * | 2012-09-29 | 2014-04-09 | 深圳市海洋王照明工程有限公司 | Light-operated street-lamp circuit |
| US20150034832A1 (en) * | 2011-06-30 | 2015-02-05 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Radiation detector comprising a circuit for injecting a calibrated quantity of counter-charges |
| CN104540298A (en) * | 2015-01-12 | 2015-04-22 | 成都果豆数字娱乐有限公司 | Light-control lighting controller used for mobile phone |
| CN106028530A (en) * | 2016-06-29 | 2016-10-12 | 成都川通达科技有限公司 | Filter type LED billboard decorative lamp driving system based on protective circuit |
| CN106851898A (en) * | 2016-12-28 | 2017-06-13 | 郑州欧印数字科技有限公司 | A kind of high stability light-operated LED road lamp |
| CN107294194A (en) * | 2017-07-07 | 2017-10-24 | 佛山市德新科技孵化器有限公司 | A kind of wind light mutual complementing LED power circuit |
-
2018
- 2018-06-25 CN CN201810657658.8A patent/CN108882447B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2247897Y (en) * | 1995-12-15 | 1997-02-19 | 杨俊才 | infrared light controlled switch |
| CN201937932U (en) * | 2010-09-30 | 2011-08-17 | 程小莉 | Automatic indoor lamp light dimmer |
| US20150034832A1 (en) * | 2011-06-30 | 2015-02-05 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Radiation detector comprising a circuit for injecting a calibrated quantity of counter-charges |
| CN103716941A (en) * | 2012-09-29 | 2014-04-09 | 深圳市海洋王照明工程有限公司 | Light-operated street-lamp circuit |
| CN104540298A (en) * | 2015-01-12 | 2015-04-22 | 成都果豆数字娱乐有限公司 | Light-control lighting controller used for mobile phone |
| CN106028530A (en) * | 2016-06-29 | 2016-10-12 | 成都川通达科技有限公司 | Filter type LED billboard decorative lamp driving system based on protective circuit |
| CN106851898A (en) * | 2016-12-28 | 2017-06-13 | 郑州欧印数字科技有限公司 | A kind of high stability light-operated LED road lamp |
| CN107294194A (en) * | 2017-07-07 | 2017-10-24 | 佛山市德新科技孵化器有限公司 | A kind of wind light mutual complementing LED power circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108882447B (en) | 2020-09-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101707836B (en) | Circuit for dimming through power switch | |
| CN205249537U (en) | A pulse width light modulation control circuit that is used for LED power of surely adjusting luminance mutually | |
| CN104540292B (en) | Suitable for the light adjusting circuit and light adjusting system on controllable silicon dimmer circuit | |
| CN102752932A (en) | LED (light-emitting diode) dimming circuit | |
| CN208285590U (en) | A kind of LED adjusting control circuit | |
| CN108882447A (en) | A kind of light-operated circuit | |
| CN202889700U (en) | LED light modulation circuit | |
| CN209982790U (en) | LED intelligent dimming control circuit and terminal | |
| CN205921788U (en) | Current control circuit and adopt this control circuit's current control ware | |
| CN205491277U (en) | Dimmer circuit system | |
| CN205405139U (en) | A hardware circuit for long -range renewal of electric automobile single chip microcomputer program | |
| CN208860939U (en) | A kind of LED light output signal real-time monitoring system | |
| CN203574905U (en) | Energy-saving lamp control circuit | |
| CN202035205U (en) | Novel sound and light controlled time delay switch | |
| CN208029153U (en) | A kind of LED light light-operated circuit and LED lamp | |
| CN208112602U (en) | A kind of energy-saving electric power of communication switchboard | |
| CN207281790U (en) | A kind of automatic face identification device for capturing formula | |
| CN201557316U (en) | Circuit realizing light adjustment through power switch | |
| CN207399411U (en) | Family endowment system based on New Image Dolby circuit | |
| CN201590922U (en) | Light-dimming inductor | |
| CN108901097A (en) | A kind of LED lamp based on controllable type constant-current source actuation techniques | |
| CN104394615A (en) | Intelligent lighting lamp | |
| CN219372631U (en) | PWM signal dimming control circuit compatible with active and passive types | |
| CN210536993U (en) | 0-10V dimmer equipment based on KNX bus | |
| CN211831252U (en) | Lamp dimming circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |