CN206596262U - A kind of Zooming light modulation circuit - Google Patents
A kind of Zooming light modulation circuit Download PDFInfo
- Publication number
- CN206596262U CN206596262U CN201720074679.8U CN201720074679U CN206596262U CN 206596262 U CN206596262 U CN 206596262U CN 201720074679 U CN201720074679 U CN 201720074679U CN 206596262 U CN206596262 U CN 206596262U
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- China
- Prior art keywords
- detection
- modulation circuit
- power supply
- signal
- light source
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Abstract
The utility model discloses a kind of Zooming light modulation circuit, including switch, power supply and light source, power supply is powered for Zooming light modulation circuit, and Zooming light modulation circuit specifically also includes：Detection unit, detection unit is connected with switch, and rectification, voltage stabilizing and amplitude limiting processing are carried out to power supply power supply signal, receives the power-off time of switching signal and detection switch, and export a detection signal according to detection gained information；Dimming unit, is connected with detection unit, receives detection signal, and according to detection signal enabling dimmer procedure, adjust dutycycle by PWM types voltage regulation way, and export a pwm signal；Current output unit, is connected with dimming unit and light source, receives pwm signal, and drive light source luminescent according to pwm signal.In summary, the utility model provides a kind of Zooming light modulation circuit, allows the linear change of brightness from 100% to 10% of light source.
Description
Technical field
The utility model is related to lighting technical field, more particularly to a kind of Zooming light modulation circuit.
Background technology
In actual life, the brightness of majority of illumination light source is fixed.If necessary to regulation light-source brightness, generally require
Increase brightness adjustment control part in outside, so not only resulting in circuit becomes complicated, light supply apparatus overall structure is become numerous
It is trivial.As illuminating industry develops, masses will further improve to lighting requirement, and the light source that can adjust brightness can be more and more
Ground is needed by masses.In real life, some patients for taking special photosensitizer, some special plant cultivations or certain
The stronger thing of a little light sensitivity, there is very strict requirement to light-source brightness, and conventional light source can not be met on the market now
These requirements.
Therefore, prior art has much room for improvement and developed.
Utility model content
The purpose of this utility model is to provide a kind of Zooming light modulation circuit, it is intended to which solving existing light source can not be according to need
Seek the technical problem of regulation brightness.
The technical solution of the utility model is as follows：
A kind of Zooming light modulation circuit, including switch, power supply and light source, power supply are powered for Zooming light modulation circuit；Wherein, it is stepless
Light adjusting circuit specifically also includes：
Detection unit, detection unit is connected with switch, is carried out rectification, voltage stabilizing and amplitude limiting processing to power supply power supply signal, is connect
The power-off time of switching signal and detection switch is received, and a detection signal is exported according to detection gained information；
Dimming unit, is connected with detection unit, receives detection signal, and according to detection signal enabling dimmer procedure, pass through
PWM types voltage regulation way adjusts dutycycle, and exports a pwm signal；
Current output unit, is connected with dimming unit and light source, receives pwm signal, and pwm signal driving light source luminescent.
Described Zooming light modulation circuit, wherein, detection unit includes power supply signal processing module, detection switch state mould
Block, time counting module and judge module,
Power supply signal processing module is connected with power supply, for carrying out rectification, voltage stabilizing and amplitude limiting processing to power supply power supply signal；
Detection switch block of state is connected with switch, at "ON", "Off" signal and the detection switch for receiving switch
In energization or off-position；
Time counting module is connected with detection switch block of state, the power-off time for detection switch；
Judge module is connected with time counting module, for storing preset value condition, and judges that the power-off time switched is
It is no to meet preset value condition.
Described Zooming light modulation circuit, wherein, dimming unit also includes odd even judge module, odd even judge module and detection
Unit is connected, and for judging during light source luminescent, power-off time length meets the quick "Off" of switch of preset value, "ON" number of times
For radix time or even-times.
Described Zooming light modulation circuit, wherein, dimming unit is single-chip microcomputer.
Described Zooming light modulation circuit, wherein, current output unit is that high-voltage linear constant current drives IC.
Described Zooming light modulation circuit, wherein, light source is LED
In summary, the utility model provides a kind of Zooming light modulation circuit, it is possible to achieve to the stepless dimming of light source, i.e.,
Allow the linear change of brightness from 100% to 10% of light source, brightness need not set inflexible classification.The letter of the utility model structure
It is single, it is easy to operate, the technical problem that conventional light source can not be dimmed is can solve the problem that, the demand of popular life is met.Meanwhile, this practicality
New proposition be a kind of higher level stepless dimming function, allow the linear change of brightness from 100% to 10% of light source so that
Can with it is more flexible, more meticulously adjust light-source brightness, meet and tightened up special occasions required to light-source brightness.
Brief description of the drawings
Fig. 1 is Zooming light modulation circuit structure chart.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, clear and definite, develop simultaneously implementation referring to the drawings
The utility model is further described example.
Referring to Fig. 1, the utility model discloses a kind of Zooming light modulation circuit, it is mainly used in realizing the stepless-adjustment to light source
Light." stepless " implies that the brightness of light source is not classified, and light-source brightness can from 100% to 10% linear change in dimming process.Nothing
Level light adjusting circuit mainly includes power supply 100, switch 200, detection unit 300, dimming unit 400, current output unit 500 and light
Source 600.Wherein, power supply 100 is that whole circuit is powered.Detection unit 300 includes power supply signal processing module 301, detection switch
Block of state 302, time counting module 303 and judge module 304.After whole circuit is connected and is powered with power supply 100, power supply
Signal processing module 301 is used to carry out rectification, voltage stabilizing and amplitude limiting processing to power supply power supply signal.Detection switch block of state 302
Energization or off-position are currently in for receiving "ON", "Off" signal and the detection switch of switch.Time counting mould
Block 303 is used for the power-off time of detection switch.Judge module 304 is used to store preset value condition, and when judging the power-off of switch
Between whether meet preset value condition.Obtain after judged result, detection unit 300 exports a detection signal.According to actual use
Custom, preset value is set to 0 ~ 2 second.Dimming unit 400 is connected with detection unit 300, receives the detection that detection unit 300 is sent
Signal.Dimming unit 400 is according to detection signal enabling dimmer procedure or stops dimmer procedure, is adjusted by PWM types voltage regulation way
Dutycycle, then exports a pwm signal.PWM type voltage regulation ways are pulsewidth width modulated type voltage regulation way, during square wave high level
Between with the cycle ratio dutycycle, 1 second low level PWM ripples dutycycle of such as 1 second high level is 50%.Pulsewidth width modulated
(PWM) it is a kind of control mode of voltage stabilizing, the utility model belongs to pulsewidth width modulated formula (PWM) switching mode mu balanced circuit, i.e.,
In the case where control circuit output frequency is constant, dutycycle is adjusted by Voltage Feedback, so as to reach regulated output voltage
Purpose, the burning voltage of output is pwm signal.Current output unit 500 is used to receive pwm signal, and is driven according to pwm signal
Dynamic light source 600 lights.Specifically, the preferred single-chip microcomputer of dimming unit, the preferred high-voltage linear constant current driving IC of current output unit, light
The preferred LED in source.
Stepless dimming method specifically includes following steps：
Step S1, switch 200 switches on power 100, and light source 600 lights, and the brightness of light source 600 is 100%.
Step S2, when light source 600 lights, 200 quick "Off" of switch, "ON".
Step S3, detects the interval time between the above-mentioned "Off" of switch 200, "ON", that is, switchs between 200 "Off", "ON"
Power-off time.Detection switch block of state 302 is used to complete this step.
Step S4, when the power-off time length between "Off", "ON" meets preset value, that is, starts stepless dimming, light source
600 brightness from 100% to 10% linear reduction in 10 seconds.Specifically, preset value is set to 0 ~ 2 second, preset value condition storage exists
In judge module 304, and judged by judge module 304.I.e. after light source 600 is luminous, when the quick "Off" of user, "ON" it
Between interval time in 0 ~ 2 second, light-adjusting module 400 starts stepless dimming program, make the brightness of light source 600 in 10 seconds from
100% to 10% linear reduction.If the interval time between the quick "Off" of user, "ON" was more than 2 seconds, i.e., equal to light source 600 again
Luminous, the brightness of light source 600 is 100%.
Step S5, during stepless dimming, quick "Off", "ON" again, when the power-off time between "Off", "ON" is long
When degree meets preset value, that is, stop light modulation, and record present intensity.I.e. in the dimming process of 10 seconds, when the quick "Off" of user,
Interval time between "ON" is in 0 ~ 2 second, light-adjusting module 400 stops stepless dimming program, and records present intensity.If with
Interval time between the quick "Off" in family, "ON" is more than 2 seconds, can also make stepless dimming program stopped, but will not now record and work as
Preceding brightness, can reopen light source 600, and the brightness of light source 600 becomes 100% again.If user is in the dimming process of 10 seconds, all
Quick "Off", "ON" operation are not carried out, then light source 600 eventually stops at 10% brightness.
Step S6, switchs 200 "Off", and light source 600 extinguishes, and the brightness of light source 600 is 0.After light source 600 extinguishes, stepless dimming
Circuit will not record lightened degree, i.e. circuit without memory function.When restarting light source 600 next time, light source 600 is bright
Spend for 100%, it is necessary to dim according to actual needs again.
In practical operation, user may not once just just suitable brightness be arrived in regulation, therefore, it can design suitable mode
Block is to support user to be carried out continuously multiple Dimming operation.Specifically, odd even can be set to judge in the dimming unit 400 of circuit
Module 401, odd even judge module 401 is used to judge to light period in light source 600, and power-off time length meets the switch of preset value
200 quick "Off", "ON" number of times are radix time or even-times.Preset value is similarly 0 ~ 2 second.During light source 600 is luminous, whenever
It was to start stepless dimming in 0 ~ 2 second that the quick "Off" of radix time, "ON" and the power-off time between "Off", "ON", which are,；Whenever even number
Secondary quick "Off", "ON" and the power-off time between "Off", "ON" are to stop dimming and recording present intensity in 0 ~ 2 second.This
The design of sample can allow user to be carried out continuously Dimming operation, until regulation untill suitable brightness.
In summary, the utility model provides a kind of Zooming light modulation circuit, it is possible to achieve to the stepless-adjustment of light source 600
Light, though the brightness of light source 600 can from 100% to 10% linear change, brightness need not set inflexible classification.This practicality is new
Type is simple in construction, easy to operate, can solve the problem that the technical problem that conventional light source can not be dimmed, meets the demand of popular life.Together
When, the utility model proposes a kind of stepless dimming function of higher level, allow the brightness of light source 600 from 100% to 10%
Linear change, so as to it is more flexible, more meticulously adjust light-source brightness, meet and tightened up particular field required to light-source brightness
Close.
It should be appreciated that application of the present utility model is not limited to above-mentioned citing, those of ordinary skill in the art are come
Say, can according to the above description be improved or converted, all these modifications and variations should all belong to the appended power of the utility model
The protection domain that profit is required.
Claims (6)
1. a kind of Zooming light modulation circuit, including switch, power supply and light source, the power supply are that the Zooming light modulation circuit is powered；Its
It is characterised by, the Zooming light modulation circuit specifically also includes：Detection unit, the detection unit is connected with the switch, to electricity
Source power supply signal carries out rectification, voltage stabilizing and amplitude limiting processing, receives the power-off time of switching signal and detection switch, and according to detection
Gained information exports a detection signal；Dimming unit, is connected with the detection unit, the reception detection signal, and according to
The detection signal enabling dimmer procedure, adjusts dutycycle, and export a pwm signal by PWM types voltage regulation way；Electric current is defeated
Go out unit, be connected with the dimming unit and the light source, receive pwm signal, and drive the light source to send out according to pwm signal
Light.
2. Zooming light modulation circuit according to claim 1, it is characterised in that the detection unit includes power supply signal processing
Module, detection switch block of state, time counting module and judge module, the power supply signal processing module connect with the power supply
Connect, for carrying out rectification, voltage stabilizing and amplitude limiting processing to power supply power supply signal；The detection switch block of state connects with the switch
Connect, "ON", "Off" signal and the detection switch for receiving switch are in energization or off-position；The time counting module
It is connected with the detection switch block of state, the power-off time for detection switch；The judge module and the time counting
Module is connected, and for storing preset value condition, and judges whether the power-off time of switch meets preset value condition.
3. Zooming light modulation circuit according to claim 1, it is characterised in that the dimming unit also judges mould including odd even
Block, the odd even judge module is connected with the detection unit, for judging during the light source luminescent, power-off time length
It is radix time or even-times to meet the quick "Off" of switch of preset value, "ON" number of times.
4. Zooming light modulation circuit according to claim 1, it is characterised in that the dimming unit is single-chip microcomputer.
5. Zooming light modulation circuit according to claim 1, it is characterised in that the current output unit is that high-voltage linear is permanent
Stream driving IC.
6. Zooming light modulation circuit according to claim 1, it is characterised in that the light source is LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720074679.8U CN206596262U (en) | 2017-01-21 | 2017-01-21 | A kind of Zooming light modulation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720074679.8U CN206596262U (en) | 2017-01-21 | 2017-01-21 | A kind of Zooming light modulation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206596262U true CN206596262U (en) | 2017-10-27 |
Family
ID=60128972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720074679.8U Expired - Fee Related CN206596262U (en) | 2017-01-21 | 2017-01-21 | A kind of Zooming light modulation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206596262U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10477645B1 (en) | 2018-08-22 | 2019-11-12 | Au Optronics Corporation | Display apparatus and operating method thereof |
-
2017
- 2017-01-21 CN CN201720074679.8U patent/CN206596262U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10477645B1 (en) | 2018-08-22 | 2019-11-12 | Au Optronics Corporation | Display apparatus and operating method thereof |
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| 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: 20171027 Termination date: 20190121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |