CN108167779B - High-precision light control method of LED lamp - Google Patents
High-precision light control method of LED lamp Download PDFInfo
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- CN108167779B CN108167779B CN201711360362.1A CN201711360362A CN108167779B CN 108167779 B CN108167779 B CN 108167779B CN 201711360362 A CN201711360362 A CN 201711360362A CN 108167779 B CN108167779 B CN 108167779B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
- F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
- F21V23/0464—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor sensing the level of ambient illumination, e.g. dawn or dusk sensors
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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
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
Abstract
The invention discloses a high-precision light control method of an LED lamp, which comprises a visible light illumination sensor, a filter lens arranged on a probe of the visible light illumination sensor, a cosine corrector connected with the filter lens, a single chip microcomputer, a driving circuit and a plurality of LED lamp beads, wherein the filter lens is arranged on the probe of the visible light illumination sensor; the single chip microcomputer is respectively and electrically connected with the visible light illumination sensor and the driving circuit, and the driving circuit is respectively and electrically connected with each LED lamp bead; the probe of the visible light illumination sensor is connected with a filter, and the filter is connected with a cosine corrector. The invention has the characteristics of high control precision and difficult misoperation.
Description
Technical Field
The invention relates to the technical field of LED lamp equipment, in particular to a high-precision light control method of an LED lamp, which is high in control precision and not easy to generate misoperation.
Background
The photosensitive devices of the light control circuit mostly adopt devices such as photoresistors and phototriodes as light controllers, and the output discreteness of the devices is large, namely the deviation of the output current value of the same illumination intensity is large. The circuit mostly adopts a voltage comparator, sets a fixed threshold value to control the on-off of the lamp, has poor control precision and is easy to generate misoperation.
Disclosure of Invention
The invention aims to overcome the defects that a light control circuit in the prior art is poor in control precision and easy to malfunction, and provides a high-precision light control method of an LED lamp, which is high in control precision and difficult to malfunction.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-precision light control method of an LED lamp comprises a visible light illumination sensor, a filter arranged on a probe of the visible light illumination sensor, a cosine corrector connected with the filter, a single chip microcomputer, a driving circuit and a plurality of LED lamp beads; the single chip microcomputer is respectively and electrically connected with the visible light illumination sensor and the driving circuit, and the driving circuit is respectively and electrically connected with each LED lamp bead; the probe of the visible light illumination sensor is connected with a filter, and the filter is connected with a cosine corrector; the method comprises the following steps:
(1-1) storing a comparison table of the illuminance voltage value and the illuminance value in the singlechip, detecting the illuminance voltage value of the environment by the visible light illuminance sensor, and inquiring the comparison table by the singlechip to obtain the illuminance value of the environment;
(1-2) first installation of the LED lamp:
(1-2-1) enabling each LED lamp bead to be turned on for a time T1 for detecting whether the lamp electrical connection is installed; meanwhile, a visible light illumination sensor detects to obtain an illumination value xLUX;
(1-2-2) the single chip microcomputer controls each LED lamp bead to be turned off;
(1-2-3) detecting by a visible light illumination sensor to obtain an ambient light illumination value yLUX;
when the yLUX is less than or equal to 100LUX, the single chip microcomputer controls the delay time T2 of each LED lamp bead to light;
(1-3) normal use state:
(1-3-1) calculating zLUX by using a formula zLUX = xLUX-yLUX by using a singlechip, and controlling an LED lamp output light illumination value zLUX by using the singlechip through a driving circuit;
(1-3-2) detecting by a visible light illumination sensor to obtain an illumination value A of the current environment;
when A is less than or equal to 100LUX, the single chip microcomputer controls each LED lamp bead to be lightened;
when A is more than or equal to 100LUX and less than or equal to 300LUX, the single chip microcomputer controls each LED lamp bead to maintain the state;
when A > (300 LUX + xLUX-yLUX), the single chip microcomputer controls each LED lamp bead to be turned off.
The visible light illumination sensor and the illumination are in a linear current output relation, and calculation and control are more convenient.
The filter is used for correcting the relative sensitivity curve of the photosensitive probe of the visible light illumination sensor, so that the relative sensitivity curve is closer to a visual function curve, and the visible light illumination sensor has higher precision.
The light on the measured surface of the cosine corrector cannot all come from the vertical direction, so the cosine correction is needed to be carried out, the different optical responses of the probe can meet the cosine relation, the cosine corrector is made of light-transmitting plastic such as PC and the like, and when the light is incident on a diffuse transmission material, the light is always diffused and received by the probe.
The singlechip reads a voltage signal detected by the visible light illumination sensor, an AD conversion module of the singlechip converts the voltage signal into a voltage value, and a comparison table of the voltage signal and the illumination value is stored in the singlechip; the invention controls the light on, the light off and the output illuminance regulation according to the detected ambient illuminance value, has high control precision and is not easy to generate misoperation.
Preferably, the driving circuit comprises a rectifying circuit, a control circuit, a driving signal output circuit and a voltage stabilizing circuit; the control circuit is respectively and electrically connected with the rectifying circuit and the driving signal output circuit, the voltage stabilizing circuit and the singlechip are sequentially and electrically connected.
Preferably, the control circuit comprises a control chip and a plurality of resistors, and the control chip is electrically connected with each resistor respectively.
Preferably, the model of the control chip is BP 2833A.
Preferably, the driving signal output circuit comprises a resistor RS61A, a resistor RS61B, a resistor RS61C, a resistor RS61D, a resistor RS27, a diode DS31, an inductor L21 and a capacitor C21; one end of the resistor RS61A connected with the resistor RS61C in parallel is electrically connected with one end of the resistor RS61B connected with the resistor RS61D in parallel, the other end of the resistor RS61A connected with the resistor RS61C in parallel is electrically connected with the cathode of the diode DS31, one end of the capacitor C21 is electrically connected with one end of the resistor RS27, the other ends of the capacitor C21 and the resistor RS27 are electrically connected with one end of the inductor L21, the other end of the inductor L21 is electrically connected with the anode of the diode DS31 and the control chip, and the other end of the resistor RS61B connected with the resistor RS61D in parallel is.
Preferably, the voltage stabilizing circuit comprises a resistor RS51A, a resistor RS51B, a resistor RS51C, a resistor RS51D, a capacitor CS51, a capacitor CS52 and a voltage regulator tube ZS 51; one end of a resistor RS51A connected with a resistor RS51C in parallel is electrically connected with one end of a resistor RS51B connected with a resistor RS51D in parallel, the other end of the resistor RS51A connected with a resistor RS51C in parallel is electrically connected with a driving signal output circuit, the other end of the resistor RS51B connected with a resistor RS51D in parallel is electrically connected with one end of a capacitor CS51, one end of a capacitor CS52 and the negative electrode of a voltage stabilizing tube ZS51 respectively, and the other end of the capacitor CS51, the other end of the capacitor CS52 and the positive electrode of the voltage stabilizing tube ZS 51.
Preferably, the model of the singlechip is 12F 510.
Preferably, T1 and T2 are both 4 seconds to 8 seconds.
Therefore, the invention has the following beneficial effects: according to the detected ambient illuminance, the light is controlled to be turned on, turned off and the output illuminance is adjusted, the control precision is high, and misoperation is not easy to occur.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a circuit diagram of the single chip, the visible light illumination sensor and the voltage regulator circuit of the present invention;
FIG. 3 is a circuit diagram of a rectifier circuit, a control circuit and a drive signal output circuit of the present invention;
FIG. 4 is a graph of a selective absorption glass function.
In the figure: the device comprises a cosine corrector 1, a filter 2, a visible light illumination sensor 3, a singlechip 4, a drive circuit 5, a rectification circuit 51, a control circuit 52, a drive signal output circuit 53 and a voltage stabilizing circuit 54.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in fig. 1, the high-precision light control method for the LED lamp includes a visible light illuminance sensor 1, a filter 2 disposed on a probe of the visible light illuminance sensor, a cosine corrector 3 connected to the filter, a single chip microcomputer 4, a driving circuit 5, and 20 LED lamp beads; the single chip microcomputer is respectively and electrically connected with the visible light illumination sensor and the driving circuit, and the driving circuit is respectively and electrically connected with each LED lamp bead; the probe of the visible light illumination sensor is connected with a filter, and the filter is connected with a cosine corrector; the method comprises the following steps:
step 210, enabling each LED lamp bead to be lightened for 5 seconds, and detecting by a visible light illumination sensor to obtain an illumination value xLUX;
220, controlling each LED lamp bead to be closed by the single chip microcomputer;
step 230, detecting by a visible light illumination sensor to obtain an ambient light illumination value yLUX;
when the yLUX is less than or equal to 100LUX, the single chip microcomputer controls each LED lamp bead to be turned on after delaying for 5 seconds;
step 310, the singlechip calculates zLUX by using a formula zLUX = xLUX-yLUX, and the singlechip controls an output light illumination value zLUX of the LED lamp through a driving circuit;
step 320, detecting the illuminance value A of the current environment once every 5 seconds by the visible light illuminance sensor; the following operations are performed according to the detected illuminance value a:
when A is less than or equal to 100LUX, the single chip microcomputer controls each LED lamp bead to be lightened;
when A is more than or equal to 100LUX and less than or equal to 300LUX, the single chip microcomputer controls each LED lamp bead to maintain the state;
when A > (300 LUX + xLUX-yLUX), the single chip microcomputer controls each LED lamp bead to be turned off.
As shown in fig. 3, the driving circuit includes a rectifying circuit 51, a control circuit 52, a driving signal output circuit 53, and a voltage stabilizing circuit 54 shown in fig. 2; the control circuit is respectively and electrically connected with the rectifying circuit and the driving signal output circuit, the voltage stabilizing circuit and the singlechip are sequentially and electrically connected. XA and XB in FIG. 3 are electrically connected to the respective LED light strings; l and N are connected to a power supply.
The control circuit comprises a control chip and 3 resistors, and the control chip is electrically connected with the resistors respectively. The model of the control chip is BP 2833A.
The driving signal output circuit comprises a resistor RS61A, a resistor RS61B, a resistor RS61C, a resistor RS61D, a resistor RS27, a diode DS31, an inductor L21 and a capacitor C21; one end of the resistor RS61A connected with the resistor RS61C in parallel is electrically connected with one end of the resistor RS61B connected with the resistor RS61D in parallel, the other end of the resistor RS61A connected with the resistor RS61C in parallel is electrically connected with the cathode of the diode DS31, one end of the capacitor C21 is electrically connected with one end of the resistor RS27, the other ends of the capacitor C21 and the resistor RS27 are electrically connected with one end of the inductor L21, the other end of the inductor L21 is electrically connected with the anode of the diode DS31 and the control chip, and the other end of the resistor RS61B connected with the resistor RS61D in parallel is.
The voltage stabilizing circuit comprises a resistor RS51A, a resistor RS51B, a resistor RS51C, a resistor RS51D, a capacitor CS51, a capacitor CS52 and a voltage regulator tube ZS 51; one end of a resistor RS51A connected with a resistor RS51C in parallel is electrically connected with one end of a resistor RS51B connected with a resistor RS51D in parallel, the other end of the resistor RS51A connected with a resistor RS51C in parallel is electrically connected with a driving signal output circuit, the other end of the resistor RS51B connected with a resistor RS51D in parallel is electrically connected with one end of a capacitor CS51, one end of a capacitor CS52 and the negative electrode of a voltage stabilizing tube ZS51 respectively, and the other end of the capacitor CS51, the other end of the capacitor CS52 and the positive electrode of the voltage stabilizing tube ZS 51. The model of the singlechip is 12F 510.
As shown in fig. 4, the filter is used to modify the relative sensitivity curve of the photosensitive probe of the visible light illuminance sensor, so that the relative sensitivity curve is closer to the visual function curve, and the visible light illuminance sensor has higher accuracy. The selective absorption glass of the filter selected by the invention is QB11, and the selective attenuation of the light with the wavelengths of 410-490ns and 590-1090ns has the effect of improving the illumination measurement accuracy.
It should be understood that this example is for illustrative purposes only and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (7)
1. A high-precision light control method of an LED lamp is characterized by comprising a visible light illumination sensor (3), a filter (2) arranged on a probe of the visible light illumination sensor, a cosine corrector (1) connected with the filter, a single chip microcomputer (4), a driving circuit (5) and a plurality of LED lamp beads; the single chip microcomputer is respectively and electrically connected with the visible light illumination sensor and the driving circuit, and the driving circuit is respectively and electrically connected with each LED lamp bead; the probe of the visible light illumination sensor is connected with a filter, and the filter is connected with a cosine corrector; the driving circuit comprises a rectifying circuit (51), a control circuit (52), a driving signal output circuit (53) and a voltage stabilizing circuit (54); the control circuit is respectively and electrically connected with the rectifying circuit and the driving signal output circuit, the voltage stabilizing circuit and the singlechip are sequentially and electrically connected; the method comprises the following steps:
(1-1) storing a comparison table of the illuminance voltage value and the illuminance value in the singlechip, detecting the illuminance voltage value of the environment by the visible light illuminance sensor, and inquiring the comparison table by the singlechip to obtain the illuminance value of the environment;
(1-2) first installation of the LED lamp:
(1-2-1) enabling each LED lamp bead to be turned on for T1, and detecting by a visible light illumination sensor to obtain an illumination value xLUX;
(1-2-2) the single chip microcomputer controls each LED lamp bead to be turned off;
(1-2-3) detecting by a visible light illumination sensor to obtain an ambient light illumination value yLUX;
when the yLUX is less than or equal to 100LUX, the single chip microcomputer controls the delay time T2 of each LED lamp bead to light;
(1-3) normal use state:
(1-3-1) calculating zLUX by using a formula zLUX = xLUX-yLUX by using a singlechip, and controlling an LED lamp output light illumination value zLUX by using the singlechip through a driving circuit;
(1-3-2) detecting by a visible light illumination sensor to obtain an illumination value A of the current environment;
when A is less than or equal to 100LUX, the single chip microcomputer controls each LED lamp bead to be lightened;
when A is more than or equal to 100LUX and less than or equal to 300LUX, the single chip microcomputer controls each LED lamp bead to maintain the state;
when A > (300 LUX + xLUX-yLUX), the single chip microcomputer controls each LED lamp bead to be turned off.
2. The method for controlling the light of the LED lamp with high precision as claimed in claim 1, wherein the control circuit comprises a control chip and a plurality of resistors, and the control chip is electrically connected with each resistor respectively.
3. The method for controlling the light of the LED lamp with high precision as claimed in claim 2, wherein the model of the control chip is BP 2833A.
4. The high-precision light control method for the LED lamp as claimed in claim 2, wherein the driving signal output circuit comprises a resistor RS61A, a resistor RS61B, a resistor RS61C, a resistor RS61D, a resistor RS27, a diode DS31, an inductor L21 and a capacitor C21; one end of the resistor RS61A connected with the resistor RS61C in parallel is electrically connected with one end of the resistor RS61B connected with the resistor RS61D in parallel, the other end of the resistor RS61A connected with the resistor RS61C in parallel is electrically connected with the cathode of the diode DS31, one end of the capacitor C21 is electrically connected with one end of the resistor RS27, the other ends of the capacitor C21 and the resistor RS27 are electrically connected with one end of the inductor L21, the other end of the inductor L21 is electrically connected with the anode of the diode DS31 and the control chip, and the other end of the resistor RS61B connected with the resistor RS61D in parallel is.
5. The method for controlling the light of the LED lamp with high precision as claimed in claim 1, wherein the voltage stabilizing circuit comprises a resistor RS51A, a resistor RS51B, a resistor RS51C, a resistor RS51D, a capacitor CS51, a capacitor CS52 and a voltage regulator tube ZS 51; one end of a resistor RS51A connected with a resistor RS51C in parallel is electrically connected with one end of a resistor RS51B connected with a resistor RS51D in parallel, the other end of the resistor RS51A connected with a resistor RS51C in parallel is electrically connected with a driving signal output circuit, the other end of the resistor RS51B connected with a resistor RS51D in parallel is electrically connected with one end of a capacitor CS51, one end of a capacitor CS52 and the negative electrode of a voltage stabilizing tube ZS51 respectively, and the other end of the capacitor CS51, the other end of the capacitor CS52 and the positive electrode of the voltage stabilizing tube ZS 51.
6. The high-precision light control method of the LED lamp according to the claim 1, 2, 3, 4 or 5, wherein the type of the single chip microcomputer is 12F 510.
7. A high-precision light control method for LED lamp as claimed in claim 1, 2, 3, 4 or 5, wherein T1 and T2 are both 4-8 seconds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711360362.1A CN108167779B (en) | 2017-12-15 | 2017-12-15 | High-precision light control method of LED lamp |
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| CN201711360362.1A CN108167779B (en) | 2017-12-15 | 2017-12-15 | High-precision light control method of LED lamp |
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| CN108167779A CN108167779A (en) | 2018-06-15 |
| CN108167779B true CN108167779B (en) | 2020-03-27 |
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| CN109099326A (en) * | 2018-09-20 | 2018-12-28 | 横店集团得邦照明股份有限公司 | A kind of spectrum stage by stage promotes the LED light and its implementation of plant growth |
| CN111132416B (en) * | 2018-10-29 | 2021-10-29 | 宁波凯耀电器制造有限公司 | Light-operated lamp and control method |
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| JP6452272B2 (en) * | 2013-02-22 | 2019-01-16 | セイコーエプソン株式会社 | Spectral camera and spectral image processing method |
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| CN101114440A (en) * | 2007-08-27 | 2008-01-30 | 重庆大学 | Automatic brightness control device of outdoor full color LED big screen display screen and method thereof |
| CN101118178A (en) * | 2007-09-06 | 2008-02-06 | 复旦大学 | LED light flux testing method |
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