CN112087844A - 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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- CN112087844A CN112087844A CN202010848253.XA CN202010848253A CN112087844A CN 112087844 A CN112087844 A CN 112087844A CN 202010848253 A CN202010848253 A CN 202010848253A CN 112087844 A CN112087844 A CN 112087844A
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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 characteristic acquisition step of acquiring characteristic information of the light source; a signal processing step of calculating and generating a drive control signal based on 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, wherein the information storage module and the information output module are arranged on the light source body; the LED lamp can be compatible with different light sources, 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 apparatus, and a light source unit.
Background
The traditional light source dimming driving device generally comprises a controller and a driver, wherein a user inputs a light emitting target value of a required light source, the controller calculates and converts a driving electric signal corresponding to the light emitting target value according to an internally recorded default light source characteristic standard, and the driving electric signal controls the driver to operate so as to drive the light source to operate, so that the purpose of dimming is achieved.
However, in practical applications, the characteristic information of the light emitted by the light sources with different specifications is not completely the same, for example, the color coordinate drift degrees of the light sources at different operating temperatures of two sets of light sources produced by different manufacturers are not necessarily the same, and the manufacturers 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 and converted into the corresponding driving electric signal according to the internally recorded default light source characteristic standard, 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 a white light lamp, the parameters affecting the color temperature of the light source of the white light lamp are: the quality and the proportion of the fluorescent powder are better, and the color temperature consistency is better; the smaller the color temperature drift is, the larger the working current is; the color temperature can shift to a high color temperature, the worse the quality of the fluorescent powder, the easier the color temperature shifts, and the easier the light decay occurs; the operating temperature also affects the color temperature drift.
Therefore, most of the dimming driving devices on the market today are matched with a light source with a specific specification, but the light sources on the market are various in types and have different specifications, and it is not practical to match one dimming driving device with each type of light source, and the production research and development cost is high.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a dimming processing method which can be compatible with different light sources and can be used for accurately dimming 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 can accurately dim light according to the characteristics of the different light sources.
The invention also provides a light source component which can carry and transmit the characteristic information of the light source outwards so as to realize accurate dimming on the light source after being utilized by the outside.
A dimming processing method according to an embodiment of a first aspect of the present invention includes: a characteristic acquisition step of acquiring characteristic information of the light source; a signal processing step of calculating and generating a drive control signal based on 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 at least has the following beneficial effects:
the dimming processing method of the invention obtains the characteristic information of the light source, processes the driving control signal adaptive to the light source according to the characteristic information of the light source, thereby driving the light source to operate, being applicable to various types of light sources and realizing accurate dimming.
According to some embodiments of the present invention, in the signal processing step, an operating current of the light source is calculated based on the characteristic information and the light source emission target information, and the driving control signal is generated based on the operating current of the light source.
According to some embodiments of the invention, the characteristic information comprises color coordinate information and/or a luminous flux temperature variation curve and/or luminous flux information at rated current.
According to some embodiments of the present invention, the light source includes two lamp sets with different colors, and in the driving step, the output driving control signal can modulate the working current matched with one of the two lamp sets to drive the two lamp sets to operate.
According to some embodiments of the present invention, the characteristic information includes color coordinate information, a luminous flux temperature change curve, and luminous flux information at a rated current, wherein the luminous flux information at the rated current includes luminosity Yc and Yw at the rated current corresponding to the two groups of lamps, respectively; the color coordinate information includes color coordinates (x) respectively corresponding to the two groups of lampsc,yc) And (x)w,yw) (ii) a The luminous flux temperature change curve comprisesThe luminous flux functions Lc ═ Lc (t) and Lw ═ Lw (t) for the two lamp groups at different operating temperatures; the light source emitting target information is Ym(ii) a Current output coefficient D corresponding to two groups of lamp groupscAnd DwRespectively as follows:
The dimming driving apparatus according to an embodiment of the second aspect of the present invention includes: the information acquisition module can acquire characteristic information of the light source; the control module is connected with the information acquisition module; and the control module is connected with the driving module and can operate to realize a dimming processing method disclosed by any one of the embodiments.
The dimming driving device according to 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, drive the external light source to operate and realize accurate dimming.
According to some embodiments of the invention, the driving module comprises a first switch driving unit and a second switch driving unit which are both connectable with the light source component, and the control module is respectively connected with the first switch driving unit and the second switch driving unit 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 through wireless and/or wired transmission.
The light source component according to the third aspect of the present invention can be applied to implement a dimming processing method disclosed in any one of the above embodiments, including: a light source body; the information storage module is arranged on the light source body and can store the characteristic information of the light source; and 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 according to 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 in the information storage module to the outside, and an external dimming driving device can utilize and process the characteristic information into the driving control signal matched with the light source component, so that the light source component is accurately dimmed.
According to some embodiments of the present invention, the light source body includes a first lamp group and a second lamp group, and a color of the first lamp group and a color of the second lamp group are different from each other.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a control flow chart of a dimming processing method according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a dimming driving apparatus and a light source unit according to an embodiment of the present invention.
Reference numerals:
the dimming driving device 100, the information acquisition module 110, the control module 120, the driving module 130, the data recording module 140, the light source component 200, the light source body 210, the information storage module 220, and the information output module 230.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the positional or orientational descriptions referred to, for example, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are based on the positional or orientational relationships shown in the drawings and are for convenience of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood 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 otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, a dimming processing method according to an embodiment of the present invention includes: a characteristic acquisition step of acquiring characteristic information of the light source; a signal processing step of calculating and generating a drive control signal based on the characteristic information; and a driving step of outputting a driving control signal to drive the light source to operate.
The dimming processing method of the invention obtains the characteristic information of the light source, processes the driving control signal adaptive to the light source according to the characteristic information of the light source, thereby driving the light source to operate, being applicable to various types of light sources and realizing accurate dimming.
In some embodiments of the present invention, in the signal processing step, the operating current of the light source is calculated according to the characteristic information and the light source light-emitting target information, a driving control signal is generated according to the operating current of the light source, the driving control signal is output, the operating current of the light source can be modulated, the magnitude of the operating current can adjust the brightness of the light source, and the driving control signal here 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 variation curve and/or luminous flux information under a rated current, and the characteristic information may further include a manufacturer, a model, a serial number, etc. of the light source, and the color coordinate information and/or the luminous flux temperature variation curve and/or the luminous flux information under the rated current are reflected from the manufacturer, the model, the serial number, etc.
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 luminous flux driven by the same operating current changes along with the temperature, so that the luminous flux at different temperatures is known according to the luminous flux temperature change curve, and the appropriate operating current is adjusted to obtain the value of the light source light-emitting target information.
In some embodiments of the present invention, the light source includes two lamp sets with different colors (specifically, different color temperatures), in the driving step, the output driving control signal can modulate the working currents matched with the two lamp sets one by one to drive the two lamp sets to operate, two sets of working currents are formed by outputting two sets of PWM driving control signals to drive the two lamp sets to operate, and the two lamp sets have different light emitting degrees by adjusting the magnitudes of the two sets of working currents, so as to color the light source.
Specifically, an embodiment thereof is taken as an illustration: the characteristic information comprises color coordinate information, luminous flux temperature change curve and luminous flux information under rated currentThe luminous flux information comprises luminosity Yc and luminosity Yw under rated current respectively corresponding to the two groups of lamp sets; the color coordinate information includes color coordinates (x) respectively corresponding to the two groups of lampsc,yc) And (x)w,yw) (ii) a The luminous flux temperature change curve comprises luminous flux functions Lc ═ Lc (t) and Lw ═ Lw (t) respectively corresponding to the two groups of lamps at different working temperatures; the light source emitting target information is Ym(ii) a Current output coefficient D corresponding to two groups of lamp groupscAnd DwCurrent output coefficient D of two lamp setscAnd DwThe ratio of the working current to the rated current of the two groups of lamp sets is respectively;
the actual luminosity of the two groups of lamps is respectively:
and the light source emits light of the object information Ym＝Yrc+Yrw＝DcYc+DwYw；
Through reverse thrust and formula substitution, the current output coefficient D corresponding to the two groups of lamps can be calculatedcAnd DwRespectively as follows:
wherein thereby the coefficient D is output by the currentcAnd DwThe magnitude of the operating current required to drive the two 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: an information acquisition module 110 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 component 200 corresponding to the acquired feature 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 its peripheral circuits, 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 dimming processing method is embedded in the control module 120.
The dimming driving device 100 of the invention 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, drive the external light source to operate and realize accurate dimming.
In some embodiments of the present invention, the information acquisition module 110 acquires the characteristic information of the light source through wireless and/or wired transmission.
Specifically, the information obtaining module 110 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 code scanner, etc., where it should be noted that the information obtaining module 110 may obtain the characteristic information of the light source from the accessed light source component 200, or may send the characteristic information of the corresponding light source to the information obtaining module 110 by using an external device (a mobile phone, a computer) in a wired or wireless manner after the user accesses the light source component 200.
In some embodiments of the present invention, the data recording module 140 is further included, the control module 120 is connected to the data recording module 140 to record characteristic information of the light source, and the data recording module 140 may be a Rom or Flash Memory program 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 capable of being connected 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 silicon controlled rectifiers, one end of the first switch driving unit and one end of the second switch driving unit are connected with an external power supply, the other end of the first switch driving unit and one end of the second switch driving unit are correspondingly connected with two groups of lamp sets in the light source part 200, the first switch driving unit and the second switch driving unit are respectively controlled to be switched on and switched off according to PWM signals output by the main control module, and therefore working currents of different sizes are adjusted to drive the lamp sets to operate.
In some embodiments of the present invention, the dimming driving apparatus 100 further includes a first temperature detecting element, the first temperature detecting element is connected to the control module 120, and the first temperature detecting element 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 third embodiment of the present invention can be applied to implement a dimming processing method in any one of the above embodiments, as shown in fig. 2, and includes: 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 the characteristic information of the light source; and an information output module 230 disposed on the light source body 210, wherein the information output module 230 is connected with the information storage module 220 to be capable of outputting characteristic information of the light source outwards.
The light source body 210 generally includes a lamp panel and a lamp bead disposed on the lamp panel, the information storage module 220 and the information output module 230 are disposed on the lamp panel, and the information output module 230 is paired with the information acquisition module 110 of the dimming driving apparatus 100.
Further, a feature information writing tool may be further included, where the feature information writing tool records feature information of various types of light sources, and may write the feature information into the information storage module 220 by wireless transmission or wired transmission.
In the light source unit 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 to the outside, and the external dimming driving device 100 can utilize and process the characteristic information into the driving control signal matched with the light source unit 200, thereby realizing accurate dimming of the light source unit 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, and the like.
In some embodiments of the present invention, the light source body 210 includes a first lamp group and a second lamp group, wherein the first lamp group and the second lamp group have different colors, the first lamp group is connected to the first switch driving unit of the dimming driving device 100, and the second lamp group is connected to the second switch driving unit of the dimming driving device 100.
First banks and second banks all can be established ties, parallelly connected or the series-parallel connection forms by LED lamp pearl, through adjusting the size of two sets of operating current who drives first banks and second banks for the luminous degree of first banks and second banks is different, thereby mixes colours to the light source.
In some embodiments of the present invention, a second temperature detecting element is further integrated on the light source component 200, and the second temperature detecting element is connected to the information output module 230, and the second temperature detecting element can detect the temperature of the external light source during operation, and send the temperature to the control module 120 through the information output module 230, so as to obtain the value of the luminous flux function for subsequent calculation.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A dimming processing method, comprising:
a characteristic acquisition step of acquiring characteristic information of the light source;
a signal processing step of calculating and generating a drive control signal based on the characteristic information;
and a driving step of outputting a driving control signal to drive the light source to operate.
2. A dimming processing method according to claim 1, wherein: in the signal processing step, the operating current of the light source is calculated according to the characteristic information and the light source light-emitting target information, and the driving control signal is generated according to the operating current of the light source.
3. A dimming processing method according to claim 2, wherein: the characteristic information comprises color coordinate information and/or luminous flux temperature change curve and/or luminous flux information under rated current.
4. A dimming processing method according to claim 2 or 3, wherein: 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.
5. A dimming processing method according to claim 4, wherein: the characteristic information comprises color coordinate information, luminous flux temperature change curves and luminous flux information under rated current, wherein the luminous flux information under the rated current comprises luminosity Yc and luminosity Yw under the rated current respectively corresponding to the two groups of lamp sets; the color coordinate information includes color coordinates (x) respectively corresponding to the two groups of lampsc，yc) And (x)w，yw) (ii) a The luminous flux temperature change curve comprises luminous flux functions Lc ═ ic (t) and Lw ═ Iw (t) respectively corresponding to the two groups of lamps at different working temperatures; the light source emitting target information is Ym(ii) a Current output coefficient D corresponding to two groups of lamp groupscAnd DwRespectively as follows:
wherein, the current output coefficient D of the two groups of corresponding lampscAnd DwThe ratio of the working current to the rated current of the two groups of lamps is respectively.
6. A dimming driving apparatus, comprising:
the information acquisition module can acquire characteristic information of the light source;
the control module is connected with the information acquisition module;
a driving module connectable to an external light source component corresponding to the acquired characteristic information, the control module being connected to the driving module and operable to implement a dimming processing method as claimed in any one of claims 1 to 5.
7. A dimming driving apparatus as claimed in claim 6, 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.
8. A dimming driving apparatus as claimed in claim 6, wherein: the information acquisition module acquires characteristic information of the light source through wireless and/or wired transmission.
9. A light source component applicable to implement a dimming processing method according to any one of claims 1 to 5, comprising:
a light source body;
the information storage module is arranged on the light source body and can store the characteristic information of the light source;
and 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.
10. A light source unit according to claim 9, wherein: the light source body comprises a first lamp group and a second lamp group, and the color of the first lamp group is different from the color of the second lamp group.
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