CN112087844B - Dimming processing method, dimming driving device and light source component - Google Patents
Dimming processing method, dimming driving device and light source component Download PDFInfo
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- CN112087844B CN112087844B CN202010848253.XA CN202010848253A CN112087844B CN 112087844 B CN112087844 B CN 112087844B CN 202010848253 A CN202010848253 A CN 202010848253A CN 112087844 B CN112087844 B CN 112087844B
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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
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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]
- H05B45/30—Driver circuits
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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
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Abstract
The invention discloses a dimming processing method, a dimming driving device and a light source component, wherein the dimming processing method comprises the following steps: a feature acquisition step of acquiring feature information of a light source; a signal processing step of calculating and generating a drive control signal according to the characteristic information; a driving step of outputting a driving control signal to drive the light source to operate; the dimming driving device comprises an information acquisition module, a control module and a driving module, wherein the control module is respectively connected with the information acquisition module and the driving module; the light source component comprises a light source body, an information storage module and an information output module which are all arranged on the light source body, and the information output module is connected with the information storage module; different light sources can be compatible, and the characteristics of each light source are matched to accurately adjust the light.
Description
Technical Field
The present invention relates to the field of lighting, and in particular, to a dimming processing method, a dimming driving device, and a light source component.
Background
The conventional light source dimming driving device generally comprises a controller and a driver, wherein a user inputs a required light source luminous target value, the controller calculates and converts a driving electric signal corresponding to the luminous target value according to a default light source characteristic standard recorded in the controller, and the driving electric signal controls the driver to operate so as to drive the light source to operate, so that the dimming purpose is achieved.
However, in practical applications, the characteristic information of the light source light emission of the light sources with different specifications is not completely the same, for example, two groups of light sources produced by different manufacturers do not necessarily have the same color coordinate drifting degree of the light source at different working temperatures, but the manufacturer can record the information, but the information is not utilized in the actual dimming process, so that the light source light emission target value required by the user input is calculated according to the default light source characteristic standard recorded in the interior and converted into the corresponding driving electric signal, and if the characteristic information of the actually accessed light source is different from the default light source characteristic standard, the accurate dimming control cannot be performed.
For example, also in white light lamps, parameters affecting the color temperature of the light source of the white light lamp are: the better the quality and the proportion of the fluorescent powder, the better the consistency of the color temperature; the smaller the color temperature drift, the larger the working current; the color temperature can drift towards a high color temperature, and the worse the quality of the fluorescent powder is, the more easily the color temperature drifts, and the light attenuation can also easily occur; the operating temperature also affects the color temperature drift.
Therefore, many dimming driving devices on the market today are matched and arranged for a light source with a specific specification, but the light sources on the market are various in variety, the specifications of the light sources are different, and it is not practical to match each light source with one dimming driving device, and the production and development costs are high.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a dimming processing method which can be compatible with different light sources and can accurately dim by matching the characteristics of each light source.
The invention also provides a dimming driving device which can be compatible with different light sources and accurately dim according to the characteristics of the different light sources.
The invention also provides a light source component which can carry and convey the characteristic information of the light source outwards, so that the light source can be accurately dimmed after the outside is utilized.
According to an embodiment of the first aspect of the present invention, a dimming processing method includes: a feature acquisition step of acquiring feature information of a light source; a signal processing step of calculating and generating a drive control signal according to the characteristic information; and a driving step of outputting a driving control signal to drive the light source to operate.
The dimming processing method provided by the embodiment of the invention has at least the following beneficial effects:
according to the dimming processing method, the characteristic information of the light source is obtained, and the driving control signal matched with the light source is processed according to the characteristic information of the light source, so that the light source is driven to operate, the dimming processing method can be applied to various types of light sources, and accurate dimming is realized.
According to some embodiments of the invention, in the signal processing step, an operating current of the light source is calculated according to the characteristic information and the light source lighting target information, and the driving control signal is generated according to the operating current of the light source.
According to some embodiments of the invention, the characteristic information comprises color coordinate information and/or luminous flux temperature change curve and/or luminous flux information at rated current.
According to some embodiments of the invention, the light source comprises two lamp groups with different colors, and in the driving step, the output driving control signal can modulate the working current matched with the two lamp groups one by one so as to drive the two lamp groups to operate.
According to some embodiments of the invention, the characteristic information comprises color coordinate information, a luminous flux temperature change curve and luminous flux information at rated current, wherein the luminous flux information at rated current comprises luminosity Yc and Yw at rated current respectively corresponding to two groups of lamps; the color coordinate information includes color coordinates (x) c ,y c ) And (x) w ,y w ) The method comprises the steps of carrying out a first treatment on the surface of the The luminous flux temperature change curve comprises luminous flux functions lc=lc (t) and lw=lw (t) corresponding to two groups of lamps at different working temperatures respectively; the luminous target information of the light source is Y m The method comprises the steps of carrying out a first treatment on the surface of the Current output coefficient D of two corresponding lamp groups c And D w The method comprises the following steps of:
According to an embodiment of the second aspect of the present invention, a dimming driving apparatus includes: the information acquisition module can acquire the characteristic information of the light source; the control module is connected with the information acquisition module; the driving module can be connected with an external light source component corresponding to the acquired characteristic information, and the control module is connected with the driving module and can operate to realize the dimming processing method disclosed in any embodiment.
The dimming driving device provided by the embodiment of the invention has at least the following beneficial effects:
the dimming driving device can acquire the characteristic information of the light source, calculate and generate the driving control signal matched with the light source according to the characteristic information, and drive the external light source to run so as to realize accurate dimming.
According to some embodiments of the invention, the driving module includes a first switch driving unit and a second switch driving unit, each of which is connectable to the light source part, and the control module is connected to the first switch driving unit and the second switch driving unit, respectively, to control the first switch driving unit and the second switch driving unit to operate
According to some embodiments of the invention, the information acquisition module acquires the characteristic information of the light source by wireless and/or wired transmission.
According to the light source unit of the third aspect of the present invention, a dimming processing method disclosed in any of the above embodiments can be applied, including: a light source body; the information storage module is arranged on the light source body and can store characteristic information of the light source; the information output module is arranged on the light source body and is connected with the information storage module so as to be capable of outputting the characteristic information of the light source outwards.
The light source component provided by the embodiment of the invention has at least the following beneficial effects:
according to the light source component, the information output module outputs the characteristic information of the light source stored by the information storage module outwards, and the external dimming driving device can utilize and process the characteristic information into the driving control signal matched with the light source component, so that accurate dimming of the light source component is realized.
According to some embodiments of the invention, the light source body comprises a first lamp group and a second lamp group, the first lamp group and the second lamp group being different from each other in color.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a control flow diagram of one embodiment of a dimming processing method according to the present invention;
fig. 2 is a schematic block diagram of one embodiment of the dimming driving apparatus and the light source unit according to the present invention.
Reference numerals:
the dimming driving apparatus 100, the information acquisition module 110, the control module 120, the driving module 130, the data recording module 140, the light source part 200, the light source body 210, the information storage module 220, and the information output module 230.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 and 2, a dimming processing method according to an embodiment of the present invention includes: a feature acquisition step of acquiring feature information of a light source; a signal processing step of calculating and generating a drive control signal according to the characteristic information; and a driving step of outputting a driving control signal to drive the light source to operate.
According to the dimming processing method, the characteristic information of the light source is obtained, and the driving control signal matched with the light source is processed according to the characteristic information of the light source, so that the light source is driven to operate, the dimming processing method can be applied to various types of light sources, and accurate dimming is realized.
In some embodiments of the present invention, in the signal processing step, the working current of the light source is calculated according to the characteristic information and the light source lighting target information, a driving control signal is generated according to the working current of the light source, the driving control signal is output, the working current of the light source can be modulated, and the brightness of the light source can be adjusted by the magnitude of the working current, where the driving control signal may be a PWM signal.
In some embodiments of the present invention, the characteristic information includes color coordinate information and/or a luminous flux temperature change curve and/or luminous flux information under rated current, and the characteristic information may further include manufacturer, model, serial number, etc. of the light source, from which the color coordinate information and/or the luminous flux temperature change curve and/or the luminous flux information under rated current are reflected.
For example, a luminous flux temperature change curve of the light source is obtained, the temperature of the light source during operation is detected, the temperature is different, and the luminous flux driven by the same working current also changes, so that the luminous flux at the different temperatures is known according to the luminous flux temperature change curve, and the proper working current is regulated to obtain the value of the luminous target information of the light source.
In some embodiments of the present invention, the light source includes two lamp groups (specifically, may have different color temperatures), in the driving step, the output driving control signal can modulate the working current matched with the two lamp groups one by one to drive the two lamp groups to operate, the two lamp groups are driven to operate by forming two groups of working currents by outputting the driving control signal of the two groups of PWM, and the two lamp groups are made to emit light to different degrees by adjusting the magnitudes of the two groups of working currents, so as to color the light source.
Specifically, an embodiment thereof is described as follows: the characteristic information comprises color coordinate information, a luminous flux temperature change curve and rated current luminous flux information, wherein the rated current luminous flux information comprises luminosity Yc and Yw corresponding to two groups of lamps under the rated current respectively; the color coordinate information includes color coordinates (x) c ,y c ) And (x) w ,y w ) The method comprises the steps of carrying out a first treatment on the surface of the The luminous flux temperature change curve comprises luminous flux functions lc=lc (t) and lw=lw (t) corresponding to two groups of lamps at different working temperatures respectively; the luminous target information of the light source is Y m The method comprises the steps of carrying out a first treatment on the surface of the Current output coefficient D of two corresponding lamp groups c And D w Current output coefficient D of two lamp sets c And D w The ratio of the working current to the rated current of the two groups of lamp groups is respectively;
the actual luminosity of the two groups of lamp sets is respectively as follows:
while the light source emits light of the target information Y m ＝Y rc +Y rw ＝D c Y c +D w Y w ；
The current output coefficient D of the corresponding two groups of lamp groups can be calculated through back-pushing and formula substitution c And D w The method comprises the following steps of:
wherein thereby is derived from the current output coefficient D c And D w The magnitude of the operating current required to drive both lamp groups can be derived from the rated current.
The dimming driving apparatus 100 according to the embodiment of the second aspect of the present invention, as shown in fig. 2, includes: the information acquisition module 110 is capable of acquiring characteristic information of the light source; the control module 120 is connected with the information acquisition module 110; the driving module 130 can be connected to the external light source part 200 corresponding to the acquired characteristic information, and the control module 120 is connected to the driving module 130 and can operate to implement a dimming processing method disclosed in any of the above embodiments.
The control module 120 may be an MCU chip, a CPU chip, or a DSP chip, and peripheral circuits thereof, further, the driving control signal may be a PWM signal, the control module 120 may be an MCU chip capable of modulating and outputting the PWM signal, and a program for implementing the above-mentioned dimming processing method is built in the control module 120.
The dimming driving device 100 of the present invention can obtain the characteristic information of the light source, calculate and generate the driving control signal matched with the light source according to the characteristic information, and drive the external light source to operate, thereby realizing accurate dimming.
In some embodiments of the present invention, the information acquisition module 110 acquires the characteristic information of the light source via wireless and/or wired transmission.
Specifically, the information obtaining module 110 may be a wireless near field communication sensor, an ethernet port, a single line transmission port, an I2C bus interface, a UART transmission port, a bluetooth chip, a WiFi chip, a code scanner, etc., and it should be noted herein that the information obtaining module 110 may obtain the characteristic information of the light source from the accessed light source component 200, or after the user accesses the light source component 200, the external device (mobile phone, computer) may be used to send the characteristic information of the corresponding light source to the information obtaining module 110 in a wired or wireless manner.
In some embodiments of the present invention, the apparatus further includes a data recording module 140, where the control module 120 is connected to the data recording module 140 to record the characteristic information of the light source, and the data recording module 140 may be Rom or Flash Memory.
In some embodiments of the present invention, the driving module 130 includes a first switch driving unit and a second switch driving unit, each of which is connectable with the light source part 200, and the control module 120 is connected with the first switch driving unit and the second switch driving unit, respectively, to control the first switch driving unit and the second switch driving unit to operate.
The first switch driving unit and the second switch driving unit can be composed of triodes, MOS tubes or thyristors, one ends of the first switch driving unit and the second switch driving unit are connected with an external power supply, the other ends of the first switch driving unit and the second switch driving unit are correspondingly connected with two groups of lamp groups in the light source component 200, and the first switch driving unit and the second switch driving unit are respectively controlled to be on-off according to PWM signals output by the main control module, so that the operation of the lamp groups driven by working currents with different sizes is regulated.
In some embodiments of the present invention, the dimming driving apparatus 100 further includes a first temperature detecting member, where the first temperature detecting member is connected to the control module 120, and the first temperature detecting member is capable of detecting a temperature of the external light source during operation, so as to obtain a value of the luminous flux function.
The light source unit 200 according to the embodiment of the third aspect of the present invention can be applied to implement a dimming processing method in any of the above embodiments, as shown in fig. 2, including: a light source body 210; the information storage module 220 is arranged on the light source body 210, and the information storage module 220 can store characteristic information of the light source; the information output module 230 is disposed on the light source body 210, and the information output module 230 is connected with the information storage module 220 to be able to output characteristic information of the light source to the outside.
The light source body 210 generally includes a light panel and a light bead disposed on the light panel, and the information storage module 220 and the information output module 230 may be disposed on the light panel, where the information output module 230 is paired with the information acquisition module 110 of the dimming driving device 100.
Further, a feature information writing tool may be further included, where feature information of various types of light sources is recorded, and the feature information may be written into the information storage module 220 by wireless transmission or wired transmission.
In the light source component 200 of the present invention, the information output module 230 outputs the characteristic information of the light source stored in the information storage module 220, and the external dimming driving device 100 can utilize and process the characteristic information into a driving control signal matched with the light source component 200, so as to realize accurate dimming of the light source component 200.
The information storage module 220 may be a Rom or Flash Memory program Memory, and the information output module 230 may be a wireless near field communication sensor, an ethernet port, a single wire transmission port, an I2C bus interface, a UART transmission port, a bluetooth chip, a WiFi chip, a two-dimensional code, or the like.
In some embodiments of the present invention, the light source body 210 includes a first lamp group and a second lamp group, the colors of the first lamp group and the second lamp group are different from each other, where the first lamp group is connected to the first switch driving unit of the dimming driving apparatus 100, and the second lamp group is connected to the second switch driving unit of the dimming driving apparatus 100.
The first lamp group and the second lamp group can be formed by connecting LED lamp beads in series, in parallel or in series-parallel, and the light source is color-mixed by adjusting the working current of the first lamp group and the second lamp group driven by the two groups, so that the light emitting degrees of the first lamp group and the second lamp group are different.
In some embodiments of the present invention, the light source component 200 is further integrated with a second temperature detecting element, where the second temperature detecting element is connected to the information output module 230, and the second temperature detecting element can detect a temperature of the external light source when the external light source works, and send the detected temperature to the control module 120 through the information output module 230, so as to obtain a value of the luminous flux function, so as to facilitate subsequent calculation.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. A dimming processing method, comprising:
a feature acquisition step of acquiring feature information of a light source;
a signal processing step of calculating and generating a drive control signal according to the characteristic information;
a driving step of outputting a driving control signal to drive the light source to operate;
in the signal processing step, working current of the light source is calculated according to the characteristic information and the light source luminous target information, and the driving control signal is generated according to the working current of the light source;
the light source comprises two lamp groups with different colors, and in the driving step, the output driving control signals can modulate working currents which are matched with the two lamp groups one by one so as to drive the two lamp groups to operate; the characteristic information comprises color coordinate information, a luminous flux temperature change curve and rated current luminous flux information, wherein the rated current luminous flux information comprises luminosity Yc and Yw corresponding to two groups of lamps under the rated current respectively; the color coordinate information includes color coordinates (x) c ,y c ) And (x) w ,y w ) The method comprises the steps of carrying out a first treatment on the surface of the The luminous flux temperature change curve comprises luminous flux functions lc=lc (t) corresponding to two lamp groups at different working temperaturesAnd lw=lw (t); the luminous target information of the light source is Y m The method comprises the steps of carrying out a first treatment on the surface of the Current output coefficient D of two corresponding lamp groups c And D w The method comprises the following steps of:
wherein, the current output coefficient D of the corresponding two groups of lamp groups c And D w The ratio of the working current to the rated current of the two groups of lamps is respectively.
2. A dimming driving apparatus, comprising:
the information acquisition module can acquire the characteristic information of the light source;
the control module is connected with the information acquisition module;
and a driving module capable of being connected with an external light source component corresponding to the acquired characteristic information, the control module being connected with the driving module and being operable to implement a dimming processing method as set forth in claim 1.
3. A dimming driving apparatus as claimed in claim 2, wherein: the driving module comprises a first switch driving unit and a second switch driving unit which can be connected with the light source component, and the control module is connected with the first switch driving unit and the second switch driving unit respectively to control the first switch driving unit and the second switch driving unit to operate.
4. A dimming driving apparatus as claimed in claim 2, wherein: the information acquisition module acquires the characteristic information of the light source through wireless and/or wired transmission.
5. A light source unit applicable to realize a dimming processing method as claimed in claim 1, comprising:
a light source body;
the information storage module is arranged on the light source body and can store characteristic information of the light source;
the information output module is arranged on the light source body and is connected with the information storage module so as to be capable of outputting the characteristic information of the light source outwards.
6. A light source component as recited in claim 5, wherein: the light source body comprises a first lamp group and a second lamp group, and the color of the first lamp group and the color of the second lamp group are different from each other.
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| CN101742766A (en) * | 2008-11-20 | 2010-06-16 | 深圳市桑达实业股份有限公司 | LED light dimming method and device |
| CN105101515A (en) * | 2014-05-21 | 2015-11-25 | 常州市武进区半导体照明应用技术研究院 | Lamp driving method and device |
| CN108401314A (en) * | 2018-01-29 | 2018-08-14 | 杭州电子科技大学 | Based on polar non-pole light regulating shading process |
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| KR20130059005A (en) * | 2011-11-28 | 2013-06-05 | 삼성전기주식회사 | Driving apparatus for light emitting and controlling method thereof |
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| CN101742766A (en) * | 2008-11-20 | 2010-06-16 | 深圳市桑达实业股份有限公司 | LED light dimming method and device |
| CN105101515A (en) * | 2014-05-21 | 2015-11-25 | 常州市武进区半导体照明应用技术研究院 | Lamp driving method and device |
| CN108401314A (en) * | 2018-01-29 | 2018-08-14 | 杭州电子科技大学 | Based on polar non-pole light regulating shading process |
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