CN109219215A - A kind of SCM Based automatic light modulating method - Google Patents
A kind of SCM Based automatic light modulating method Download PDFInfo
- Publication number
- CN109219215A CN109219215A CN201811106621.2A CN201811106621A CN109219215A CN 109219215 A CN109219215 A CN 109219215A CN 201811106621 A CN201811106621 A CN 201811106621A CN 109219215 A CN109219215 A CN 109219215A
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- China
- Prior art keywords
- light
- intensity
- intensity value
- pwm
- illumination intensity
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- 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
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
-
- 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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention discloses a kind of SCM Based automatic light modulating methods, comprising: step 1, the detection range according to light intensity sensor, setting unit PWM output quantity；Step 2, light intensity sensor obtain current illumination intensity value；Current illumination intensity value is compared by step 3 with preset Intensity threshold；Step 4, when the current illumination intensity value be greater than Intensity threshold when, single-chip microcontroller output PWM increase a unit PWM output quantity, when the current illumination intensity value be less than Intensity threshold when, single-chip microcontroller output PWM reduce a unit PWM output quantity.This method is acquired and is compared by the intensity of illumination to current light source, is dynamically adjusted to light source, so that light source tends to stablize.This method can be used for light regulating technology field.
Description
Technical field
The present invention relates to light regulating technology field, in particular to a kind of light-dimming method.
Background technique
Present lamp lighting system has certain automation, but function has a certain distance in terms of precise controlling,
Such as street lamp, the rough brightness of scene is obtained by photo resistance, resistance is larger so that passing through relay during the day for photo resistance
The electric current of device is smaller, cannot drive relay that street lamp circuit is closed, and resistance reduces larger by electric current when evening, so that driving
Motor type relay, and then street lamp circuit is closed, and achievees the purpose that road lamp switch carries out on-off, but be only capable of carrying out at dark certainly
It is dynamic to open, it is at day automatically closed, a rough control can only be carried out, not can be carried out complicated brightness regulation, so that light source
It is unstable.
Summary of the invention
In view of the drawbacks of the prior art, the present invention provides a kind of light-dimming method that can make light stability.
The solution that the present invention solves its technical problem is: a kind of SCM Based automatic light modulating method, comprising: step
Rapid 1, according to the detection range of light intensity sensor, setting unit PWM output quantity；Step 2, light intensity sensor obtain current illumination
Intensity value；Current illumination intensity value is compared by step 3 with preset Intensity threshold；Step 4, when the current light
When being greater than Intensity threshold according to intensity value, the PWM of single-chip microcontroller output increases a unit PWM output quantity, when the current illumination
When intensity value is less than Intensity threshold, the PWM of single-chip microcontroller output reduces by a unit PWM output quantity.
Further, in step 2, the method that light intensity sensor obtains current illumination intensity value is multi collect and asks flat
Mean value.
Further, the model BH1750FVI of the light intensity sensor.
The beneficial effects of the present invention are: this method is acquired and is compared by the intensity of illumination to current light source, dynamic
Light source is adjusted so that light source tend to stablize.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.Obviously, described attached drawing is a part of the embodiments of the present invention, rather than is all implemented
Example, those skilled in the art without creative efforts, can also be obtained according to these attached drawings other designs
Scheme and attached drawing.
Fig. 1 is the step flow chart of the embodiment of the present invention 1.
Specific embodiment
It is carried out below with reference to technical effect of the embodiment and attached drawing to design of the invention, specific structure and generation clear
Chu is fully described by, to be completely understood by the purpose of the present invention, feature and effect.Obviously, described embodiment is this hair
Bright a part of the embodiment, rather than whole embodiments, based on the embodiment of the present invention, those skilled in the art are not being paid
Other embodiments obtained, belong to the scope of protection of the invention under the premise of creative work.In addition, be previously mentioned in text
All connection/connection relationships not singly refer to that component directly connects, and referring to can be added deduct according to specific implementation situation by adding
Few couple auxiliary, to form more preferably coupling structure.Each technical characteristic in the invention, in not conflicting conflict
Under the premise of can be with combination of interactions.
Embodiment 1, with reference to Fig. 1, a kind of SCM Based automatic light modulating method, comprising:
Step S1, according to the detection range of light intensity sensor, setting unit PWM output quantity；
Step S2, light intensity sensor obtains current illumination intensity value；
Step S3, current illumination intensity value is compared with preset Intensity threshold；
Step S4, when the current illumination intensity value is greater than Intensity threshold, the PWM of single-chip microcontroller output increases a list
Position PWM output quantity, when the current illumination intensity value is less than Intensity threshold, the PWM of single-chip microcontroller output reduces by a unit
PWM output quantity.
Specifically, by taking the detection range of light intensity sensor is the lux 1-3000 (Lx) as an example, then it can be by light intensity sensor
Detection range be divided into 100 parts, it is every it is a be 30 luxs, the program of single-chip microcontroller is set, so that its exportable unit PWM is defeated
The adjustment width of output corresponds to 30 luxs, i.e., when exporting a unit PWM output quantity, the light of the light source of corresponding adjustment
It is 30 luxs according to intensity.Optical sensor obtains the illumination intensity value of current light source, and in order to reduce error, optical sensor exists
The method for passing through the illumination intensity value of multi collect current light source and averaging, to obtain the illumination intensity value of current light source.
The illumination intensity value passes to single-chip microcontroller, and the single-chip microcontroller internal preset has Intensity threshold, and the present embodiment is 100 luxs,
The illumination intensity value is the general ideal intensity of illumination of household fluorescent lamp.With the illumination of the current light source obtained from light intensity sensor
Intensity value is compared with illumination threshold value, and when the current illumination intensity value is greater than Intensity threshold, the PWM of single-chip microcontroller output increases
Add a unit PWM output quantity, when the current illumination intensity value is less than Intensity threshold, the PWM of single-chip microcontroller output is reduced
One unit PWM output quantity.For example, setting the PWM of current single-chip microcontroller output as k, unit PWM output quantity is x, when working as acquisition
When the illumination intensity value of front light-source is 80 lux, at this point, the illumination intensity value of current light source is less than Intensity threshold, it is therefore, single
The PWM of piece machine output should be k+x.That is, the PWM wave that output width is bigger, so as to adjust the intensity of illumination of light source.When acquisition
When the illumination intensity value of current light source is 130 lux, at this point, the illumination intensity value of current light source is greater than Intensity threshold, therefore,
The PWM of single-chip microcontroller output should be k-x.That is, the output smaller PWM wave of width, so as to adjust the intensity of illumination of light source.It is so anti-
It is multiple, that is, it may make the intensity of illumination of light source to be in a dynamic equilibrium, meet the requirement of daily life.
As optimization, the model BH1750FVI of the light intensity sensor.The light intensity sensor of the model is simple, is easy to
Exploitation.
Better embodiment of the invention is illustrated above, but the invention is not limited to the implementation
Example, those skilled in the art can also make various equivalent modifications on the premise of without prejudice to spirit of the invention or replace
It changes, these equivalent variation or replacement are all included in the scope defined by the claims of the present application.
Claims (3)
1. a kind of SCM Based automatic light modulating method characterized by comprising
Step 1, the detection range according to light intensity sensor, setting unit PWM output quantity；
Step 2, light intensity sensor obtain current illumination intensity value；
Current illumination intensity value is compared by step 3 with preset Intensity threshold；
Step 4, when the current illumination intensity value be greater than Intensity threshold when, single-chip microcontroller output PWM increase a unit PWM
Output quantity, when the current illumination intensity value is less than Intensity threshold, it is defeated that the PWM of single-chip microcontroller output reduces by a unit PWM
Output.
2. a kind of SCM Based automatic light modulating method according to claim 1, which is characterized in that in step 2, light
The method that strong sensor obtains current illumination intensity value is multi collect and averages.
3. a kind of SCM Based automatic light modulating method according to claim 1, which is characterized in that the light intensity sensing
The model BH1750FVI of device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106621.2A CN109219215A (en) | 2018-09-21 | 2018-09-21 | A kind of SCM Based automatic light modulating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106621.2A CN109219215A (en) | 2018-09-21 | 2018-09-21 | A kind of SCM Based automatic light modulating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109219215A true CN109219215A (en) | 2019-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811106621.2A Pending CN109219215A (en) | 2018-09-21 | 2018-09-21 | A kind of SCM Based automatic light modulating method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650921A (en) * | 2009-09-17 | 2010-02-17 | 青岛海信电器股份有限公司 | Method and device of controlling dynamic backlight |
| US20110232026A1 (en) * | 2010-03-26 | 2011-09-29 | Shop Vac Corporation | Removable Circuit Board Assembly for a Vacuum |
| CN107770915A (en) * | 2017-11-16 | 2018-03-06 | 万子恺 | A kind of method of intelligent light control system and signal light control |
-
2018
- 2018-09-21 CN CN201811106621.2A patent/CN109219215A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101650921A (en) * | 2009-09-17 | 2010-02-17 | 青岛海信电器股份有限公司 | Method and device of controlling dynamic backlight |
| US20110232026A1 (en) * | 2010-03-26 | 2011-09-29 | Shop Vac Corporation | Removable Circuit Board Assembly for a Vacuum |
| CN107770915A (en) * | 2017-11-16 | 2018-03-06 | 万子恺 | A kind of method of intelligent light control system and signal light control |
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Application publication date: 20190115 |