CN101969735A - Automatic luminosity regulation method and device for compact fluorescent lamp - Google Patents
Automatic luminosity regulation method and device for compact fluorescent lamp Download PDFInfo
- Publication number
- CN101969735A CN101969735A CN2010105383558A CN201010538355A CN101969735A CN 101969735 A CN101969735 A CN 101969735A CN 2010105383558 A CN2010105383558 A CN 2010105383558A CN 201010538355 A CN201010538355 A CN 201010538355A CN 101969735 A CN101969735 A CN 101969735A
- Authority
- CN
- China
- Prior art keywords
- signal
- fluorescent lamp
- compact fluorescent
- digital signal
- predetermined threshold
- 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.)
- Pending
Links
Classifications
-
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to automatic luminosity regulation method and device for a compact fluorescent lamp. The method comprises the steps of: detecting the outside luminous intensity of the fluorescent lamp, obtaining a light intensity value, and outputting a corresponding current signal; conveying the output current signal into a voltage signal; carrying out A/D conversion on the voltage signal to obtain a corresponding digital signal; and sampling the digital signal, comparing the sampled digital signal with a preset threshold range, and outputting a control signal according to the comparing result. The device comprises a luminosity sensor, a resistance network, and a digital-to-analogue conversion module, wherein the output end of the luminosity sensor is connected with the input end of the resistance network; the output end of the resistance network is connected with the input end of the digital-to-analogue conversion module; and the output end of the digital-to-analogue conversion module is connected with a control module. The invention samples digital signals and judges needed control signals through detecting the outside luminous environment, thereby realizing power regulation and reducing the condition limits in the scene control of an illuminating system.
Description
Technical field
The present invention relates to a kind of compact fluorescent lamp luminosity Automatic adjustment method and device, belong to field of intelligent control.
Background technology
During modern lighting was used, the use of electric ballast more and more widely.Electric ballast is one and converts power frequency AC the converter of high-frequency ac power to that its basic functional principle is: power frequency supply through filtering, rectification after, become DC power supply.By the DC/AC converter, the high-frequency ac power of output 20K-100KHZ is added to the LC series resonant circuit heat filament that is connected with lamp again, on capacitor, produce simultaneously resonance high-voltage, be added in lamp tube ends, make fluorescent tube, enter luminance again by " discharge " becomes " conducting " state.Compare Inductive ballast, the fluorescent lamp that uses electric ballast is that electricity-saving lamp (being compact fluorescent lamp again) has light efficiency height (be common bulb 5 times), energy-saving effect is obvious, can overcome stroboscopic, life-span long (be common bulb 8 times), advantage such as volume is little, and is easy to use, being widely used, is the great innovation of illumination development history the next item up.Along with the progress and the growth in the living standard of science and technology, people have diversified requirement to illuminator, for example carry out the control of illuminator scene.But, it is existing that what can carry out illuminator scene control all is the LED electricity-saving lamp, traditional compact fluorescent lamp is because belong to glow discharge spot lamp, there is not numerically controlled characteristic, can easily not realize adjusting according to the variation of environment, and the LED electricity-saving lamp gets cost generally all than the compact fluorescent lamp height much to power.
Therefore develop a kind of can according to exterior light according to environmental change and automatically the compact fluorescent lamp of real-time regulated operating power be to have necessary and long-range meaning.
Summary of the invention
The present invention will solve is that existing compact fluorescent lamp can't be realized according to the variation of outside photoenvironment and the problem of regulating self operating power automatically.
For solving the problems of the technologies described above, embodiment of the present invention provides a kind of compact fluorescent lamp luminosity Automatic adjustment method, comprises the steps: to detect the fluorescent lamp external light intensity, obtains light intensity value, the output corresponding voltage signal; By resistor network the voltage signal of exporting is converted to current signal; Current signal is carried out the A/D conversion, obtain corresponding digital signal; The described digital signal of sampling, with the digital signal that samples and predetermined threshold range relatively, according to comparative result, the output control signal.
Optionally, described detection external light intensity adopts luminosity sensor that light signal is converted to the signal of telecommunication.
Optionally, the range of light intensity of described predetermined threshold range correspondence is 700lx～1200lx.
Optionally, described output control signal realizes by the duty ratio of regulating the PWM ripple.
Optionally, when the described digital signal that samples was in the predetermined threshold range, the output control signal kept PWM ripple duty ratio constant; When the described digital signal that samples was lower than the predetermined threshold range lower limit, the output control signal increased PWM ripple duty ratio; When the described digital signal that samples was higher than the predetermined threshold range higher limit, the output control signal reduced PWM ripple duty ratio.
For solving the problems of the technologies described above, embodiment of the present invention also provides a kind of compact fluorescent lamp luminosity automatic regulating equipment that adopts above-mentioned compact fluorescent lamp luminosity Automatic adjustment method, comprise: luminosity sensor, be used to detect light intensity, light signal is converted to signal of telecommunication output; Resistor network is converted to current signal with output voltage signal; D/A converter module is converted to digital signal with current signal; Control module compares digital signal and the predetermined threshold range that samples, according to comparative result, and the output control signal; The output of described luminosity sensor links to each other with the resistor network input, and the output of resistor network links to each other with the D/A converter module input, and the output of D/A converter module links to each other with control module.
Optionally, described luminosity sensor adopts Ou Silang environment light sensor SFH5711.
Optionally, the range of light intensity of described predetermined threshold range correspondence is 700lx～1200lx.
Optionally, described output control signal realizes by the duty ratio of regulating the PWM ripple.
Optionally, when the described digital signal that samples was in the predetermined threshold range, the output control signal kept PWM ripple duty ratio constant; When the described digital signal that samples was lower than the predetermined threshold range lower limit, the output control signal increased PWM ripple duty ratio; When the described digital signal that samples was higher than the predetermined threshold range higher limit, the output control signal reduced PWM ripple duty ratio.
Compared with prior art, technique scheme detects the outside photoenvironment of compact fluorescent lamp, and sample the digital signal of illumination value correspondence, judge the needed control signal of fluorescent lamp under the present case, realization is to the power adjustments of compact fluorescent lamp, can only carry out power adjustments to the LED electricity-saving lamp than existing, the technical program has reduced in the control of illuminator scene the condition restriction to lamp.
Description of drawings
Fig. 1 is the flow chart of an embodiment of compact fluorescent lamp luminosity Automatic adjustment method of the present invention;
Fig. 2 is the structural representation of an embodiment of compact fluorescent lamp luminosity automatic regulating equipment of the present invention;
Fig. 3 is the circuit diagram of an embodiment of compact fluorescent lamp luminosity automatic regulating equipment of the present invention.
Embodiment
The inventor finds, existing adjustable luminosity electricity-saving lamp is the LED electricity-saving lamp, compact fluorescent lamp is because belong to glow discharge spot lamp, there is not numerically controlled characteristic, in power control, there is not feasible technical scheme, therefore, the inventor has proposed the technical scheme that compact fluorescent lamp luminosity is regulated, to realize the adjusting to the operating power of fluorescent lamp.
The invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, compact fluorescent lamp luminosity Automatic adjustment method of the present invention comprises:
Step S11 detects the fluorescent lamp external light intensity, obtains light intensity value, exports corresponding current signal.
In the present embodiment, detect outside light intensity by luminosity sensor, transducer detects the intensity of illumination that fluorescent lamp self sends simultaneously, and itself and outside light intensity is superimposed, obtains light intensity value.Luminosity sensor converts light signal to the signal of telecommunication by photoelectric cell, so, just can form a negative feed back control system, real-time regulated fluorescent lamp operation power.
Step S12 is converted to voltage signal with the current signal of exporting.The current signal of by the method that adds a resistor network transducer being exported in the present embodiment is converted to voltage signal.
Step S13, the A/D conversion.
Step S14 compares the digital signal and the predetermined threshold range of sampling.If this digital signal is in threshold range, execution in step S15; If this digital signal is less than threshold range, execution in step S16; If this digital signal is greater than threshold range, execution in step S17.
In the present embodiment, the intensity of illumination reasonable interval of the corresponding range of light intensity of predetermined threshold range for assert.Light intensity value after light that lamp self sends and external environment condition are superimposed is in this range of light intensity the time, and the operating efficiency of fluorescent lamp need not to change; When both superimposed light intensity values during less than this range of light intensity, judge that illumination is dark partially, the operating efficiency of fluorescent lamp is less than normal; When both superimposed light intensity values during greater than this range of light intensity, judge that illumination is bright partially, the operating efficiency of fluorescent lamp is bigger than normal.
The predetermined threshold range of present embodiment determines that by the A/D transformation result its corresponding range of light intensity is 700lx～1200lx.
Step S15, output PWM duty ratio is constant.
Step S16, output PWM duty ratio reduces.
Step S17, output PWM duty ratio increases.
The basic principle that the present invention regulates fluorescent lamp operation power is to come driving fluorescent lamp by PWM ripple inverter circuit, and duty ratio is the ratio of shared cycle time of high level and whole cycle time.Under the normal operation, the stable output of PWM ripple, duty ratio is constant; When light is more weak, increase output PWM ripple duty ratio, the ratio of high level shared cycle time increases, and fluorescent lamp operation power improves; When light is strong, reduce to export PWM ripple duty ratio, the ratio of high level shared cycle time reduces, and fluorescent lamp operation power reduces.
Duty ratio was 70% when the PWM ripple of present embodiment was stablized output.
As shown in Figure 2, compact fluorescent lamp luminosity automatic regulating equipment of the present invention comprises luminosity sensor 21, resistor network 22, D/A converter module 23, control module 24.
The output of described luminosity sensor 21 links to each other with the input of described resistor network 22, and current signal is converted to voltage signal; The output of described resistor network 22 links to each other with described D/A converter module 23 inputs, the analog voltage signal that described D/A converter module 23 samplings convert to through described resistor network 22; The output of described D/A converter module 23 links to each other with the input of control module 24, the digital signal value and the predetermined threshold that receive are carried out algorithm relatively, according to the different control signal of comparative result output, the PWM ripple of promptly exporting different duty comes the operating power of fluorescent lamp is regulated.
As shown in Figure 3, the circuit diagram of compact fluorescent lamp luminosity automatic regulating equipment of the present invention comprises luminosity sensor 21, resistor network 22, master control MCU31, compact fluorescent lamp 32.
Described luminosity sensor 21 can both be worked remarkably under various light sources such as natural daylight, fluorescence and incandescent lamp, that present embodiment adopts is Ou Silang environment light sensor SFH5711, can accurately meet or simulate the human eye sensitivity curve, light intensity signal is converted to current signal output.
Described resistor network 22 adopts the resistance of certain value, is magnitude of voltage with current conversion, and conversion formula is:
U=IR
Wherein U is a magnitude of voltage, and I is a current value, and R is described resistor network resistance value.
Described D/A converter module 23 all is integrated among the master control MCU 31 with control module 24, and D/A converter module 23 is A/D modular converter among the master control MCU 31, and control module 24 is master control MCU 31 CPU.
The luminosity sensor 21 output current magnitude range of present embodiment are 5 μ A～50 μ A, and the resistance of resistor network 22 is 100K Ω, and the scope of D/A converter module 23 input voltage values is 0.5V～5V.
In addition to the implementation, the present invention can also have other execution modes, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of requirement of the present invention.
Claims (10)
1. a compact fluorescent lamp luminosity Automatic adjustment method is characterized in that, may further comprise the steps:
(1) detects the fluorescent lamp external light intensity, obtain light intensity value, export corresponding current signal;
(2) by resistor network the current signal of exporting is converted to voltage signal;
(3) voltage signal is carried out the A/D conversion, obtain corresponding digital signal;
(4) the described digital signal of sampling, with the digital signal that samples and predetermined threshold range relatively, according to comparative result, the output control signal.
2. compact fluorescent lamp luminosity Automatic adjustment method as claimed in claim 1 is characterized in that: described detection external light intensity adopts luminosity sensor that light signal is converted to the signal of telecommunication.
3. compact fluorescent lamp luminosity Automatic adjustment method as claimed in claim 2 is characterized in that: the range of light intensity of described predetermined threshold range correspondence is 700lx～1200lx.
4. compact fluorescent lamp luminosity Automatic adjustment method as claimed in claim 2 is characterized in that: described output control signal realizes by the duty ratio of regulating the PWM ripple.
5. as claim 3 or 4 described compact fluorescent lamp luminosity Automatic adjustment method, it is characterized in that: when the described digital signal that samples was in the predetermined threshold range, the output control signal kept PWM ripple duty ratio constant; When the described digital signal that samples was lower than the predetermined threshold range lower limit, the output control signal increased PWM ripple duty ratio; When the described digital signal that samples was higher than the predetermined threshold range higher limit, the output control signal reduced PWM ripple duty ratio.
6. one kind is adopted the compact fluorescent lamp luminosity automatic regulating equipment of compact fluorescent lamp luminosity Automatic adjustment method according to claim 1, it is characterized in that, comprising: luminosity sensor, be used to detect light intensity, and light signal is converted to signal of telecommunication output; Resistor network is converted to current signal with output voltage signal; D/A converter module is converted to digital signal with current signal; Control module compares digital signal and the predetermined threshold range that samples, according to comparative result, and the output control signal; The output of described luminosity sensor links to each other with the resistor network input, and the output of resistor network links to each other with the D/A converter module input, and the output of D/A converter module links to each other with control module.
7. compact fluorescent lamp luminosity automatic regulating equipment as claimed in claim 6 is characterized in that: described luminosity sensor adopts Ou Silang environment light sensor SFH5711.
8. compact fluorescent lamp luminosity automatic regulating equipment as claimed in claim 6 is characterized in that: the range of light intensity of described predetermined threshold range correspondence is 700lx～1200lx.
9. compact fluorescent lamp luminosity automatic regulating equipment as claimed in claim 6 is characterized in that: described output control signal realizes by the duty ratio of regulating the PWM ripple.
10. compact fluorescent lamp luminosity automatic regulating equipment as claimed in claim 8 or 9, it is characterized in that: when the described digital signal that samples was in the predetermined threshold range, the output control signal kept PWM ripple duty ratio constant; When the described digital signal that samples was lower than the predetermined threshold range lower limit, the output control signal increased PWM ripple duty ratio; When the described digital signal that samples was higher than the predetermined threshold range higher limit, the output control signal reduced PWM ripple duty ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105383558A CN101969735A (en) | 2010-11-10 | 2010-11-10 | Automatic luminosity regulation method and device for compact fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105383558A CN101969735A (en) | 2010-11-10 | 2010-11-10 | Automatic luminosity regulation method and device for compact fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101969735A true CN101969735A (en) | 2011-02-09 |
Family
ID=43548786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105383558A Pending CN101969735A (en) | 2010-11-10 | 2010-11-10 | Automatic luminosity regulation method and device for compact fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101969735A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906296A (en) * | 2012-12-27 | 2014-07-02 | 纽海信息技术（上海）有限公司 | Light intensity adjusting device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808875A (en) * | 2005-01-19 | 2006-07-26 | 美国芯源系统股份有限公司 | Method and apparatus for DC to AC power conversion for driving discharge lamps |
| CN201174803Y (en) * | 2008-03-25 | 2008-12-31 | 万鸿基 | Intelligent control system of energy saving road lamp |
| CN201207736Y (en) * | 2007-12-25 | 2009-03-11 | 上海市延安中学 | Automatically brightness regulating projector lamp |
-
2010
- 2010-11-10 CN CN2010105383558A patent/CN101969735A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1808875A (en) * | 2005-01-19 | 2006-07-26 | 美国芯源系统股份有限公司 | Method and apparatus for DC to AC power conversion for driving discharge lamps |
| CN201207736Y (en) * | 2007-12-25 | 2009-03-11 | 上海市延安中学 | Automatically brightness regulating projector lamp |
| CN201174803Y (en) * | 2008-03-25 | 2008-12-31 | 万鸿基 | Intelligent control system of energy saving road lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906296A (en) * | 2012-12-27 | 2014-07-02 | 纽海信息技术（上海）有限公司 | Light intensity adjusting device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2676528B1 (en) | A dimmable led driver and a method for controlling the same | |
| US8044600B2 (en) | Brightness-adjustable LED driving circuit | |
| CN201523469U (en) | Intelligent light-emitting diode pulse drive circuit | |
| CN202050563U (en) | Flyback dimming LED (light-emitting diode) drive circuit | |
| WO2012008800A2 (en) | Power integrated circuit for led lighting | |
| CN101420802A (en) | The LED constant-current source that is used for the AC controllable silicon light modulation mode of illuminator | |
| CN107071985B (en) | A kind of control circuit and lamps and lanterns | |
| CN201226605Y (en) | Household illumination ceiling lamp circuit | |
| CN201860492U (en) | Light modulating device for LED illumination lamp | |
| CN103313469B (en) | A kind of drive circuit of LED light device and driving method | |
| CN202183900U (en) | Driving device capable of adjusting light steplessly by power switch | |
| CN104066247A (en) | Drive circuit and dimming control method for LED lighting device | |
| CN203984733U (en) | A kind of drive circuit of LED lighting device | |
| CN211297065U (en) | PWM isolation dimming driving power circuit with NFC function | |
| CN102271441B (en) | Constant-current control LED (light-emitting diode) driving circuit | |
| CN201307960Y (en) | LED constant-current source of alternating current controlled silicon dimming mode | |
| CN208572491U (en) | Control circuit, LED drive chip and LED drive system | |
| CN109982489A (en) | Linear constant current stepless dimming controller IC | |
| CN101969735A (en) | Automatic luminosity regulation method and device for compact fluorescent lamp | |
| CN203233576U (en) | Drive circuit of LED lighting device | |
| CN201967185U (en) | Light source control device and system | |
| CN103228083A (en) | Intelligent dimming LED driving power supply | |
| CN210124031U (en) | LED lighting system capable of adaptively adjusting light according to ambient illumination | |
| CN208739455U (en) | LED touch dimmer temperature driving power | |
| CN106793311A (en) | The LED Intelligent constant flow constant-voltage driving power sources of tunable optical |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110209 |