CN115484709A - Intelligent lamp control system and light environment regulation and control method thereof - Google Patents
Intelligent lamp control system and light environment regulation and control method thereof Download PDFInfo
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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
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
- H05B47/105—Controlling the light source in response to determined parameters
- H05B47/11—Controlling the light source in response to determined parameters by determining the brightness or colour temperature of ambient light
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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
- H05B47/175—Controlling the light source by remote control
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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
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- 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
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Abstract
The invention discloses an intelligent lamp control system and a light environment regulation and control method thereof, wherein the intelligent lamp control system comprises an intelligent lamp, a spectrum illumination sensor and an Internet of things gateway, the intelligent lamp and the spectrum illumination sensor are respectively in communication connection with the Internet of things gateway, and a light source of the intelligent lamp comprises two channel light sources; the spectral illumination sensor is used for collecting ambient light parameters including the relative spectral power distribution of ambient light and the illuminance of the ambient light, and sending the ambient light parameters to the Internet of things gateway; the Internet of things gateway is used for generating a control instruction according to the ambient light parameters and sending the control instruction to the intelligent lamp, wherein the control instruction is a lamp turning-on instruction, a lamp turning-off instruction or an adjusting instruction; the intelligent lamp is used for carrying out corresponding operation according to the control command sent by the internet of things gateway. The invention can automatically regulate and control the illumination according to the change of the ambient light, thereby improving the visual effect and the eye comfort.
Description
Technical Field
The invention relates to the technical field of illumination control, in particular to an intelligent lamp control system and a light environment regulation and control method thereof.
Background
The good illumination can create a visual environment, so that people can see objects, walk safely, and effectively, accurately and safely complete visual operation without causing visual fatigue and discomfort. The visual environment created by this good lighting also becomes a healthy light environment. However, the regulation and control of the classroom light environment is basically realized by single product in a single area, the regulation and control mode is single, fine dynamic illumination regulation and control cannot be realized according to environment change, the healthy light environment requirement cannot be met, and the eyesight protection of students is not facilitated.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the intelligent lamp control system and the light environment regulation and control method thereof are provided, illumination regulation and control can be automatically carried out according to the change of ambient light, and the visual effect and the eye comfort level are improved.
In order to solve the technical problems, the invention adopts the technical scheme that: an intelligent lamp control system comprises an intelligent lamp, a spectrum illumination sensor and an Internet of things gateway, wherein the intelligent lamp and the spectrum illumination sensor are respectively in communication connection with the Internet of things gateway, and a light source of the intelligent lamp comprises two channel light sources;
the spectral illumination sensor is used for collecting ambient light parameters and sending the ambient light parameters to the Internet of things gateway, wherein the ambient light parameters comprise the relative spectral power distribution of ambient light and the illumination of the ambient light;
the Internet of things gateway is used for generating a control instruction according to the ambient light parameters sent by the spectral illumination sensor and sending the control instruction to the intelligent lamp, wherein the control instruction is a lamp turning-on instruction, a lamp turning-off instruction or an adjusting instruction, and the adjusting instruction comprises a color temperature adjusting instruction and a current adjusting instruction;
and the intelligent lamp is used for carrying out corresponding operation according to the control instruction sent by the Internet of things gateway.
The invention also provides a light environment regulation and control method based on the intelligent lamp control system, which comprises the following steps:
collecting ambient light parameters according to a preset period, wherein the ambient light parameters comprise the relative spectral power distribution of ambient light and the illuminance of the ambient light;
according to the illuminance of the ambient light and a preset illuminance value, turning on the intelligent lamp, turning off the intelligent lamp or adjusting the output current of a light source of the intelligent lamp;
calculating the spectrum continuity according to the relative spectrum power distribution of the environment light and the relative spectrum power distribution of a preset standard light source;
and if the spectrum continuity is smaller than a preset ratio, respectively adjusting the current duty ratios of the two channel light sources of the intelligent lamp.
The invention has the beneficial effects that: the system comprises a spectrum illumination sensor, an Internet of things gateway and an intelligent lamp, wherein the spectrum illumination sensor is used for collecting ambient light parameters and sending the ambient light parameters to the Internet of things gateway, the Internet of things gateway analyzes the ambient light parameters, generates a corresponding control instruction and sends the control instruction to the intelligent lamp, and the intelligent lamp executes corresponding actions according to the control instruction. The invention can automatically adjust and control the illumination according to the change of the ambient light, so that the light ambient parameters in the illumination space are maintained in a proper range interval, and local over-brightness or over-darkness is avoided, thereby improving the eye comfort, being beneficial to relieving visual fatigue, improving the visual effect, reducing the eye load and protecting the eyesight.
Drawings
Fig. 1 is a schematic structural diagram of an intelligent control system of a lamp according to an embodiment of the present invention;
FIG. 2 is a schematic spectrum diagram of two channel light sources of the smart lamp in a preferred embodiment;
fig. 3 is a schematic structural diagram of a lamp intelligent control system according to a first embodiment of the present invention;
FIG. 4 is a flowchart of a light environment adjusting method according to a second embodiment of the present invention;
fig. 5 is a schematic spectrum diagram of a standard light source according to a second embodiment of the invention.
Description of the reference symbols:
1. an intelligent light; 2. a spectral illuminance sensor; 3. an Internet of things gateway; 4. a control panel; 5. and a remote control terminal.
Detailed Description
In order to explain technical contents, objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.
The noun explains:
relative spectral power distribution: the method refers to a functional relation between a relative value of spectral density of a radiation source and wavelength, wherein the spectral density refers to a ratio of radiant quantity X (radiant flux, radiant intensity and the like) in a tiny wavelength width range taking the wavelength as a center to the wavelength width; this spectral nature of the light source determines its color temperature and color rendering properties.
Illuminance: illuminance is simply referred to, and its measurement unit is called "lux", and its measurement unit is called "le", and its unit symbol is "lx", and it represents the luminous flux received on the surface of the subject per unit area. 1 lux is equal to 1 lumen/square meter, i.e. the luminous flux irradiated perpendicularly by a light source with a luminous intensity of 1 Camdet at a distance of one meter per square meter of the subject.
Chromaticity coordinates: refers to the ratio of one of the tristimulus values X, Y, Z to the sum of the three, wherein X represents the amount of red primary color stimulus, Y represents the amount of green primary color stimulus, and Z represents the amount of blue primary color stimulus.
Color coordinates: the color coordinate is a common color coordinate, and the horizontal axis is x and the vertical axis is y. With the color coordinates, a point on the chromaticity diagram can be determined which accurately represents the emission color.
Color temperature: the color temperature is a unit of measure representing the color component contained in the light. Theoretically, the blackbody temperature refers to the color that an absolute blackbody would appear after warming from absolute zero (-273 ℃). After being heated, the black body gradually turns from black to red, turns yellow and becomes white, and finally emits blue light. When heated to a certain temperature, the light emitted by a black body contains spectral components, referred to as the color temperature at that temperature, measured in "K" (kelvin).
Correlated color temperature: when the light emitted from a light source is identical to the light emitted from a black body (e.g., platinum) at a certain temperature, the temperature of the black body at that time is expressed as the color temperature (i.e., color temperature) of the light source. This assumes that the spectral distribution of the light source is relatively close to the blackbody locus. However, most of the light colors of the illumination light sources are not exactly on the black body radiation line, and Raymond Davis et al propose the concept of correlated color temperature, which is represented by the shortest distance temperature on a uniform chromaticity diagram, and is represented by the Kwang temperature.
Referring to fig. 1, an intelligent control system for a lamp includes an intelligent lamp, a spectrum illumination sensor and an internet of things gateway, where the intelligent lamp and the spectrum illumination sensor are respectively in communication connection with the internet of things gateway, and a light source of the intelligent lamp includes two channel light sources;
the spectral illumination sensor is used for collecting ambient light parameters and sending the ambient light parameters to the Internet of things gateway, wherein the ambient light parameters comprise the relative spectral power distribution of ambient light and the illumination of the ambient light;
the Internet of things gateway is used for generating a control instruction according to the ambient light parameters sent by the spectrum illumination sensor and sending the control instruction to the intelligent lamp, wherein the control instruction is a lamp turning-on instruction, a lamp turning-off instruction or an adjusting instruction, and the adjusting instruction comprises a color temperature adjusting instruction and a current adjusting instruction;
and the intelligent lamp is used for carrying out corresponding operation according to the control instruction sent by the Internet of things gateway.
From the above description, the beneficial effects of the present invention are: the illumination regulation and control can be automatically carried out according to the change of the ambient light, and the visual effect and the eye comfort level are improved.
Further, the system also comprises a control panel, wherein the control panel is in communication connection with the internet of things gateway;
the control panel is used for receiving a mode selection instruction and sending a scene mode corresponding to the mode selection instruction to the Internet of things gateway;
the Internet of things gateway is further used for acquiring corresponding intelligent lamp configuration information according to the received scene mode, generating a corresponding control instruction according to the corresponding intelligent lamp configuration information, and sending the corresponding control instruction to the intelligent lamp.
As can be seen from the above description, by performing illumination adjustment according to the scene mode, it is possible to provide refined dynamic illumination adjustment for different application scenes or different time periods.
The system further comprises a remote control end, wherein the remote control end is in communication connection with the internet of things gateway;
the remote control end is used for sending a control instruction to the Internet of things gateway;
and the Internet of things gateway is also used for sending the control instruction sent by the remote control end to the intelligent lamp.
Further, the remote control terminal is further configured to receive a mode selection instruction, and send a scene mode corresponding to the mode selection instruction to the internet of things gateway.
As can be seen from the above description, remote management and control can be achieved.
Further, the light source of the intelligent lamp comprises a first channel light source and a second channel light source;
the color temperature range of the first channel light source is 2725 +/-50K, the color point is in a 3-step MacAdam elliptical area taking a central point as a first central point, and the coordinates of the first central point are (0.4578, 0.4101);
the color temperature range of the second channel light source is 6532 +/-200K, the color point is in a 4-step MacAdam elliptical area taking the central point as a second central point, and the coordinates of the second central point are (0.31223, 0.0.3283);
the spectral continuity of the first channel light source is greater than or equal to 80%, and the spectral continuity of the second channel light source is greater than or equal to 85%.
As can be seen from the above description, by setting a dual-channel light source and setting an appropriate parameter range, it is convenient to modulate and output the spectrum corresponding to different scene modes.
The invention also provides a light environment regulation and control method based on the intelligent lamp control system, which comprises the following steps:
collecting ambient light parameters according to a preset period, wherein the ambient light parameters comprise the relative spectral power distribution of ambient light and the illuminance of the ambient light;
according to the illuminance of the ambient light and a preset illuminance value, turning on the intelligent lamp, turning off the intelligent lamp or adjusting the output current of a light source of the intelligent lamp;
calculating the spectrum continuity according to the relative spectral power distribution of the ambient light and the relative spectral power distribution of a preset standard light source;
and if the spectrum continuity is smaller than a preset ratio, respectively adjusting the current duty ratios of the two channel light sources of the intelligent lamp.
According to the above description, the illuminance of the intelligent lamp can be adjusted by adjusting the output current of the light source, so that the illuminance balance of the light environment is realized; by adjusting the current duty ratio of the light source, the output spectrum of the intelligent lamp can be adjusted, and therefore the spectrum continuity of the luminous environment is improved.
Further, the turning on the smart lamp, turning off the smart lamp or adjusting the output current of the light source of the smart lamp according to the illuminance of the ambient light and the preset illuminance value specifically includes:
if the illuminance of the ambient light is greater than a preset maximum illuminance value, turning off the intelligent lamp or reducing the output current of the intelligent lamp according to a preset adjustment step length;
and if the illuminance of the ambient light is less than the preset minimum illuminance value, the intelligent lamp is started or the output current of the intelligent lamp is increased according to the preset adjustment step length.
From the above description, the brightness of the lamp is adjusted according to the change of the ambient light, so as to accurately keep the illuminance balance of the light environment.
Further, the calculating the spectral continuity according to the relative spectral power distribution of the ambient light and the relative spectral power distribution of the preset standard light source specifically includes:
calculating the spectrum continuity according to a spectrum continuity calculation formula
Wherein, C S Denotes spectral continuity, Y R (lambda) represents a spectral power value at a wavelength of lambda in a relative spectral power distribution of a predetermined standard light source, Y T (λ) represents a spectral power value at a wavelength λ in the relative spectral power distribution of the ambient light, Δ λ =1nm, and (a, b) is a preset wavelength range.
From the above description, the spectral continuity represents the ratio of the overlapping area of the test light source and the standard light source to the area of the standard light source, and the larger the value, the better the spectral continuity, and the closer to the standard light source.
Further, a =380nm, b =780nm, the preset ratio is 85%, or a =425nm, b =690nm, the preset ratio is 90%.
Further, the specific steps of respectively adjusting the current duty cycles of the two channel light sources of the intelligent lamp are as follows:
determining a target mixed color temperature according to a preset standard light source, and determining a coordinate value of a central point of a color point of mixed light color according to the target mixed color temperature;
respectively obtaining color coordinates of two channel light sources of the intelligent lamp under a preset condition, wherein the preset condition is that the current duty ratio is 100%;
respectively calculating the photometric quantity of the two channel light sources under a preset condition according to the rated output current of the intelligent lamp and the rated current, the rated luminous flux and the number of parallel branches of the two channel light sources of the intelligent lamp, and determining the photometric quantity of mixed light according to the photometric quantity of the two channel light sources under the preset condition;
calculating target current duty ratios of the two channel light sources according to the color coordinates and the photometric quantity of the two channel light sources of the intelligent lamp under the preset condition, the coordinate values of the color points and the central points of the mixed light colors and the photometric quantity of the mixed light;
and respectively adjusting the current duty ratios of the two channel light sources of the intelligent lamp according to the target current duty ratios of the two channel light sources.
According to the above description, the corresponding target mixed color temperature is determined according to the different selected standard light sources, and then the target current duty ratios of the two channel light sources of the intelligent lamp are determined according to the luminosity constraint condition, the chromaticity constraint condition and the parameters of the intelligent lamp, so that the current duty ratios are adjusted, and the intelligent lamp meets the output spectrum condition.
Further, the calculating, according to the color coordinates and the photometric quantity of the two channel light sources of the intelligent lamp under the preset condition, the coordinate value of the color point center point of the mixed light, and the photometric quantity of the mixed light, the target current duty ratios of the two channel light sources are specifically:
calculating target current duty ratios of two channel light sources of the intelligent lamp according to a current duty ratio calculation formula, wherein the current duty ratio calculation formula is as follows:
D c Y c +D w Y w ＝Y m
wherein R is c ＝Y c /y c ，R w ＝Y w /y w ，Y c And Y w Respectively the photometric quantities of the two channel light sources under the preset conditions, (x) c ，y c ) And (x) w ，y w ) Color coordinates of two channel light sources under preset conditions, D c And D w Target current duty cycles, Y, for two channel light sources, respectively m As a measure of mixed light, x m Is the x coordinate value of the center point of the color point of the mixed light color.
Further, still include:
presetting a scene mode and intelligent lamp configuration information corresponding to the scene mode;
when a scene selection instruction is received, determining a scene mode corresponding to the scene selection instruction;
and acquiring corresponding intelligent lamp configuration information according to the determined scene mode, and respectively adjusting the color temperature and the current duty ratio of two channel light sources of the intelligent lamp according to the corresponding intelligent lamp configuration information.
As can be seen from the above description, by performing illumination adjustment according to the scene mode, it is possible to provide refined dynamic illumination adjustment for different application scenes or different time periods.
Example one
Referring to fig. 1-3, a first embodiment of the present invention is: an intelligent control system for a lamp can be applied to classrooms.
As shown in fig. 1, the intelligent lighting system comprises an intelligent lamp 1, a spectrum illumination sensor 2 and an internet of things gateway 3, wherein the intelligent lamp 1 and the spectrum illumination sensor 2 are respectively in communication connection with the internet of things gateway 3.
In this embodiment, intelligent lamp 1 includes intelligent classroom lamp and intelligent blackboard lamp, and the operation face of intelligent classroom lamp is the desk face, and the operation face of intelligent blackboard lamp is the blackboard face. The spectral illumination sensor 2 can be a spectral illumination meter, a probe of the spectral illumination sensor 2 can be installed at a suitable position such as a window and a front wall of a classroom, the installation mode is not limited, the spectral illumination sensor can also be installed on a ceiling and faces a working face of an intelligent lamp, or can be installed at a position facing a lighting window, and the spectral illumination sensor can also be integrated on a lamp.
Further, the intelligent lamps 1 in this embodiment are configured as dual-channel light sources, that is, the light source of each intelligent lamp 1 includes two channel light sources, namely a first channel light source and a second channel light source, wherein the color temperature range of the first channel light source is 2725 ± 50K, and the color point falls within the 3 rd-order macadam ellipse area with the center point as the first center point (0.4578, 0.4101); the color temperature range of the second channel light source is 6532 +/-200K, and the color point falls in a 4-step MacAdam elliptical area with the central point as a second central point (0.31223, 0.0.3283); the spectra of the two channel light sources are specially modulated and respectively satisfy the spectrum continuity condition, and the spectrum continuity C of the first channel light source S1 Not less than 80%, spectrum continuity C of the second channel light source S2 And the reference standard light source of the first channel light source is black body radiation curve (BBC) 2700K, and the reference standard light source of the second channel light source is CIE D Series 6500K. In a preferred embodiment, the spectral continuity C of the first channel light source S1 =81.6%, spectral continuity C of the second channel light source S2 =85.6%, at this timeThe spectral distribution of (a) is shown in fig. 2.
In this embodiment, the spectral illumination sensor is configured to collect an ambient light parameter, and send the ambient light parameter to the internet of things gateway, where the ambient light parameter includes a relative spectral power distribution of ambient light and an illumination of the ambient light;
the internet of things gateway is used for generating a control instruction according to the ambient light parameters sent by the spectral illumination sensor and sending the control instruction to the intelligent lamp, wherein in the embodiment, the control instruction is a lamp turning-on instruction, a lamp turning-off instruction or an adjusting instruction, and the adjusting instruction comprises a color temperature adjusting instruction and a current adjusting instruction;
and the intelligent lamp is used for carrying out corresponding operation according to the control instruction sent by the Internet of things gateway. For example, if the control command is a light-on command, the light source of the intelligent lamp is turned on; if the control instruction is a light-off instruction, turning off a light source of the intelligent lamp; and if the control instruction is an adjusting instruction, adjusting the output currents of the two channel light sources of the intelligent lamp or adjusting the current duty ratios of the two channel light sources.
Further, as shown in fig. 3, the system further includes a control panel 4, and the control panel 4 is in communication connection with the internet of things gateway 3 through the internet of things. The control panel is disposed within a classroom, for example, may be disposed adjacent a classroom door. The user can select a scene mode through the control panel, and the control panel sends the scene mode corresponding to the mode selection instruction to the Internet of things gateway after receiving the mode selection instruction; and the Internet of things gateway acquires corresponding intelligent lamp configuration information according to the received scene mode, generates a corresponding control instruction and sends the control instruction to the intelligent lamp.
Further, still include remote control end 5, like PC (computer), panel computer or smart mobile phone etc. remote control end 5 passes through IP network communication connection with thing networking gateway 4, realizes the remote management and control to the intelligent lamp in the classroom. Specifically, the user accessible remote control end control classroom intelligent lamp, the remote control end can directly send control command to the thing allies oneself with the gateway promptly to make the thing allies oneself with the gateway and forward this control command for intelligent lamp. The user can also select a scene mode through the remote control end, the remote control end receives a mode selection instruction and then sends the scene mode corresponding to the mode selection instruction to the Internet of things gateway, and the Internet of things gateway acquires corresponding intelligent lamp configuration information according to the received scene mode, generates a corresponding control instruction and then sends the control instruction to the intelligent lamp.
This embodiment can be according to the automatic regulation and control of throwing light on of ambient light's change, makes the luminous ambient parameter in the illumination space maintain in appropriate range interval, avoids local too bright or dark to can promote with eye comfort level, be favorable to alleviating visual fatigue, promote visual efficiency, alleviate with eye load, protect eyesight.
Example two
Referring to fig. 4-5, the present embodiment is a method for regulating and controlling a light environment of an intelligent control system of a lamp according to the first embodiment. The parameters of the intelligent lamp can be automatically adjusted according to the change of the ambient light, so that the light ambient parameters of the classroom space are maintained in a proper range interval, and the local over-brightness or over-darkness of the classroom is avoided.
As shown in fig. 4, the method of this embodiment includes the following steps:
s1: the method comprises the steps of collecting ambient light parameters according to a preset period, namely collecting the ambient light parameters through a spectral illuminance sensor, wherein the ambient light parameters comprise the relative spectral power distribution of ambient light and the illuminance of the ambient light.
Further, according to the relative spectral power distribution of the ambient light, chromaticity parameters such as chromaticity coordinates, correlated color temperature, and display index of the ambient light can be calculated.
S2: and according to the illuminance of the ambient light and a preset illuminance value, turning on the intelligent lamp, turning off the intelligent lamp or adjusting the output current of a light source of the intelligent lamp.
Specifically, if the illuminance of the ambient light is greater than a preset maximum illuminance value, the intelligent lamp is turned off or the output current of the light source of the intelligent lamp is reduced according to a preset adjustment step length; and if the illuminance of the ambient light is less than the preset minimum illuminance value, the intelligent lamp is started or the output current of the light source of the intelligent lamp is increased according to the preset adjustment step length.
The step adjusts the brightness of the lamp according to the change of the ambient light so as to accurately keep the illumination balance of the light environment. When the illuminance of the working face of the intelligent lamp is higher than the preset illuminance range, the intelligent lamp is turned off or dimmed, and when the illuminance of the working face of the intelligent lamp is lower than the preset illuminance range, the intelligent lamp is turned on or dimmed. The preset illumination range can refer to national standards, industry standards or local standards, and for a common classroom, the illumination value of the working face is required to be more than or equal to 300lx.
S3: and calculating the spectrum continuity according to the relative spectrum power distribution of the environment light and the relative spectrum power distribution of a preset standard light source.
Specifically, the spectral continuity is calculated according to a spectral continuity calculation formula, which is:
wherein, C S Denotes spectral continuity, Y R (lambda) represents a spectral power value at a wavelength of lambda in a relative spectral power distribution of a predetermined standard light source, Y T (λ) represents a spectral power value at a wavelength λ in the relative spectral power distribution of the ambient light, Δ λ =1nm, and (a, b) are preset wavelength ranges, in this embodiment, a =380nm and b =780nm, i.e., the wavelength range of visible light.
Continuity of spectrum C S The ratio of the coincidence area of a test light source (namely a light source of an intelligent lamp) and a standard light source to the area of the standard light source is represented, and the larger the numerical value is, the better the spectral continuity is, and the closer the numerical value is to the standard light source.
The spectral power distribution curve and data of the standard light source are the daylight spectral power distribution curve, i.e. the standard illuminant, which is a mixture of the D50 standard illumination defined by CIE, and the spectral distribution curve is shown in fig. 5. In particular, the reference standard light source is not limited to D50, and may be calculated according to the latest TM-30 standard by using a black body radiation curve BBC as a reference light source for light sources with a color temperature of 4000K and below 4000K, using a mixture of a 4000K black body radiation curve and D50 standard illumination as a reference light source for light source measurement calculation between 4000K and 5000K color temperatures, and selecting a standard illuminant with a color temperature greater than 5000K as a reference light source.
S4: and judging whether the spectrum continuity is smaller than a preset ratio, if so, executing the step S5, and if not, indicating that the spectrum continuity of the light source of the current intelligent lamp meets the requirement without adjustment.
In this embodiment, the predetermined ratio is 85%.
In another alternative embodiment, a =425nm, b =690nm, which wavelength range coincides with the high response wavelength region of the human photopic vision function. Accordingly, if this range is adopted, the predetermined ratio is 90%.
S5: and respectively adjusting the current duty ratios of the two channel light sources of the intelligent lamp so as to enable the spectrum continuity of the light source of the intelligent light to reach the output condition.
Theoretically, it can be proved that, by mixing the light of the two light sources of the LED, a certain mapping relationship exists between the current duty ratio of the two light sources and the light color amount of the mixed light, and the certainty is determined by the geometrical, luminosity and chromaticity constraint conditions under the light mixing technology.
1. Geometric constraints. As known from colorimetry knowledge, chromaticity coordinates of mixed light must be on a chromaticity coordinate connection line of two light sources participating in the mixed light, and the specific position depends on the mixing ratio of the two light sources. The geometrical constraint condition of the light mixing of the two-channel light source is expressed by the following formula:
wherein (x) c ，y c ) And (x) w ，y w ) The color coordinates of two light sources (i.e. cold light source and warm light source) participating in light mixing under the condition of 100% current duty ratio (x) m ，y m ) Is the color coordinate of the mixed light.
2. And (4) luminosity constraint conditions. The current duty cycle driving the LEDs is varied with the chromaticity amount constant and the photometric amount correspondingly linearly varied, and the ratio of the photometric amounts is equal to the ratio of the current duty cycles. The photometric quantity may be a luminous flux, illuminance, brightness, or light intensity, and the colorimetric quantity may be chromaticity coordinates or correlated color temperature, depending on the test conditions.
If the current duty cycles of the two light sources are known, the photometric quantity of the mixed light can be calculated as follows in combination with the principle of superposition:
D c Y c +D w Y w ＝Y m
wherein Y is c And Y w Respectively, the light quantity of two light sources participating in light mixing under the condition that the current duty ratio is 100 percent, D c And D w Current duty cycles, Y, of two light sources, respectively m Is the photometric quantity of the mixed light.
3. And chroma constraint conditions. According to the additive color mixing principle and the CIE1931 color coordinate calculation method, when the current duty ratios are Dc and Dw respectively, the color coordinates of the two light sources after light mixing satisfy the following conditions:
wherein R is c ＝Y c /y c ，R w ＝Y w /y w 。
In fact, as can be seen from the geometrical constraints, the y-coordinate of the mixed light is deterministic and unique when the chromaticity coordinates of the two light sources and the x-coordinate of the mixed light are known. Therefore, the chromaticity constraint condition of the two-light-source mixed light can be simplified as follows:
different color temperature environment matching is selected according to different scene requirements, the color coordinate and the color temperature of the central point of mixed light can be determined firstly, and then the current duty ratios of the two light sources are determined according to the constraint conditions and the design parameters of the intelligent lamp, so that the mixed color temperature and the current duty ratio of the two channel light sources of the intelligent lamp can be adjusted.
Therefore, the present step includes the steps of:
s501: and determining a target mixed color temperature according to a preset standard light source, and determining a coordinate value of a color point center point of the mixed light color according to the target mixed color temperature.
The color point coordinate values of the mixed light color corresponding to different target mixed color temperatures can be constrained according to the color temperature center point defined by the ANSI standard, as shown in table 1.
Table 1: corresponding relation table of target mixed color temperature and mixed light color point center point coordinate value
| Target mixed color temperature (K) | x | y |
| 2700 | 0.4578 | 0.4101 |
| 300 | 0.4339 | 0.4033 |
| 3500 | 0.4078 | 0.393 |
| 4000 | 0.3818 | 0.3797 |
| 5000 | 0.3446 | 0.3551 |
| 5700 | 0.3287 | 0.3425 |
| 6500 | 0.3123 | 0.3283 |
For example, when the standard illuminant is set to be the D50 standard illumination, the target mixed color temperature is 5000K, and the color point center point coordinate value of the mixed light color is (0.3446, 0.3551).
S502: respectively obtaining color coordinates of two channel light sources of the intelligent lamp under a preset condition, wherein the preset condition is that the current duty ratio is 100%; specifically, the parameters can be obtained through factory initial setting parameters of the intelligent lamp.
In this embodiment, as known from factory initial settings of the intelligent lamp, when the current duty ratio is 100%, the coordinate value (x) of the center point of the color point of the first channel light source w ，y w ) = (0.4578, 0.4101), color point center point coordinate value of second channel light source (x) c ，y c )＝(0.31223，0.3283)。
S503: respectively calculating the photometric quantity of the two channel light sources under a preset condition according to the rated output current of the intelligent lamp and the rated current, the rated luminous flux and the number of parallel branches of the two channel light sources of the intelligent lamp, and determining the photometric quantity of mixed light according to the photometric quantity of the two channel light sources under the preset condition.
Each channel light source consists of a plurality of LEDs looped in a particular series-parallel fashion. For example, the LED of the intelligent classroom lamp is in a series-parallel mode of 13P20S, that is, the intelligent classroom lamp includes 13 parallel branches, and 20 LEDs are connected in series on each parallel branch; the LED series-parallel mode of intelligence blackboard lamp is 8P20S, includes 8 parallel branch roads promptly, connects 20 LEDs in series on every parallel branch road.
In this embodiment, the rated parameters of the smart lamp and the LED light source are set as shown in table 2.
Table 2: intelligent lamp rated parameter and LED light source setting table
| Rated output current (A) | LED rated current (A) | LED rated luminous flux (lm) | Number of parallel branches of LED | |
| Intelligent classroom lamp | 0.56 | 0.15 | 60 | 13 |
| Intelligent blackboard and the like | 0.56 | 0.15 | 60 | 8 |
For the intelligent lamp, the photometry Y of the two channel light sources participating in light mixing under the condition that the current duty ratio is 100 percent c 、Y w The light quantity can be obtained according to the linear relation between the light quantity of the LED light source and the current relation curve, and in this embodiment, the calculation formula of the light quantity is as follows:
therefore, the photometric quantity of the first channel light source at a current duty cycle of 100% = (rated output current of the smart lamp/LED parallel branch number of the first channel light source) × (rated LED luminous flux of the first channel light source/rated LED current of the first channel light source); the light quantity of the second channel light source under the condition that the current duty ratio is 100% = (rated output current of the intelligent lamp/number of parallel connected LEDs of the second channel light source) × (rated LED luminous flux of the second channel light source/rated LED current of the second channel light source).
According to the above formula and in combination with Table 2, the photometric quantity Y of two channel light sources of the intelligent classroom lamp can be calculated respectively c ＝Y w 18lm, photometry Y of two channel light sources of intelligent blackboard lamp c ＝Y w ≈28lm。
In addition, the photometric quantity Y of the mixed light m ≤max(Y c ，Y w ) In this example, Y m ＝Y c Or Y m ＝Y w 。
S504: and calculating target current duty ratios of the two channel light sources according to the color coordinates and the photometric quantity of the two channel light sources of the intelligent lamp under the preset condition, the coordinate value of the color point center point of the mixed light and the photometric quantity of the mixed light.
Specifically, according to the luminosity constraint condition and the chromaticity constraint condition, the target current duty ratios of the two channel power supplies of the intelligent lamp can be respectively calculated, and the specific calculation formula is as follows:
D c Y c +D w Y w ＝Y m
wherein R is c ＝Y c /y c ，R w ＝Y w /y w ，Y c Is the light quantity of the first channel light source under the condition that the current duty ratio is 100 percent, Y w For the second channel light source at currentThe light measurement under the condition of 100% duty ratio; d c And D w Target current duty ratios of the two channel light sources respectively; (x) c ，y c ) Is the color coordinate of the first channel light source under the conditions of full current and 100% of current duty ratio, (x) w ，y w ) Is the color coordinate, x, of the second channel light source under the condition that the current duty ratio is 100% m X-coordinate value of color point center point of mixed light color; y is m Is the photometric quantity of the mixed light.
S505: and respectively adjusting the current duty ratios of the two channel light sources of the intelligent lamp according to the target current duty ratios of the two channel light sources.
After the target current duty ratio is obtained through calculation, the current duty ratios of the two channel light sources of the intelligent lamp can be respectively adjusted according to the target current duty ratio.
In this step, the intelligent lamp adjusts the spectral change to automatically adjust the matching standard light source for output by adjusting the current duty ratio of the light source.
In the above steps, the spectral distribution of the two channel light sources is adjusted by collecting the spectral distribution of the surrounding environment and performing algorithm fitting with the standard light source, and when the spectral continuity C is reached S The spectrum is output only when the ratio is larger than or equal to the preset ratio, so that the eye comfort can be improved, the visual fatigue and visual illusion are reduced, the eye load is reduced, and the eyesight is protected.
Further, in this embodiment, the light environment may be regulated according to a scene mode selected by the user. Specifically, a scene mode and corresponding intelligent lamp configuration information thereof are preset; when a scene selection instruction is received through a control panel or a remote control end, a scene mode corresponding to the scene selection instruction is determined, and the color temperature and the current duty ratio of two channel light sources of the intelligent lamp are respectively adjusted according to the corresponding configuration information of the intelligent lamp.
In this embodiment, the following scene modes are included:
1. and in the mode, the color temperatures (namely the mixed color temperatures of the two channel light sources) of the intelligent classroom lamp and the intelligent blackboard lamp are uniformly set to be 5700K, the current duty ratio of the first channel light source in the intelligent classroom lamp and the intelligent blackboard lamp is set to be 21.0 percent, the current duty ratio of the second channel light source is set to be 59.0 percent, the average illumination of the desk top of the regulation and control class is 350-400lx, and the average illumination of the blackboard surface is 550-600lx.
2. The intelligent classroom teaching desk comprises a general teaching mode, functions are applied to read-write scenes, the color temperature of a lamp of an intelligent classroom lamp and the color temperature of a lamp of an intelligent blackboard lamp are uniformly set to be 5000K, the current duty ratio of a first channel light source in the intelligent classroom lamp is set to be 26.3%, the current duty ratio of a second channel light source is set to be 73.7%, the average illumination of a regulation desk surface is 450-500lx, the current duty ratio of the first channel light source in the intelligent blackboard lamp is set to be 23.6%, the current duty ratio of the second channel light source is set to be 66.4%, and the average illumination of the regulation blackboard surface is 650-700lx.
3. The intelligent classroom lamp and the intelligent blackboard lamp are uniformly set to 5000K in color temperature, the current duty ratio of a first channel light source in the intelligent classroom lamp is set to 26.3%, the current duty ratio of a second channel light source is set to 73.7%, the average illumination of a desk surface is regulated to 450-500lx, the current duty ratio of the first channel light source in the intelligent blackboard lamp is set to 13.1%, the current duty ratio of the second channel light source is set to 36.9%, and the average illumination of a blackboard surface is regulated to 300-350lx.
4. The intelligent teaching room lamp has the advantages that the intelligent teaching room lamp and the intelligent blackboard lamp are set to 3000K in a unified mode, the current duty ratio of the first channel light source in the intelligent teaching room lamp is set to 21.6%, the current duty ratio of the second channel light source is set to 3.4%, the average illumination of the desk surface is reduced to 30-60lx, and the intelligent blackboard lamp is turned off.
5. The teaching desk comprises a night teaching mode, functions are applied to night teaching, the color temperature of lamps of an intelligent classroom lamp and an intelligent blackboard lamp is uniformly set to 4000K, the current duty ratio of a first channel light source in the intelligent classroom lamp is set to 50.7%, the current duty ratio of a second channel light source is set to 44.3%, the average illumination of the desk surface is regulated to 450-500lx, the current duty ratio of the first channel light source in the intelligent blackboard lamp is set to 39.1%, the current duty ratio of the second channel light source is set to 34.2%, and the average illumination of the blackboard surface is regulated to 500-550lx.
6. The intelligent teaching room lamp and the intelligent blackboard lamp are uniformly set to 4000K, the current duty ratio of a first channel light source in the intelligent teaching room lamp is set to 50.7%, the current duty ratio of a second channel light source is set to 44.3%, the average illumination of a desk surface is regulated to 450-500lx, the blackboard lamp is turned off, or the average illumination of a blackboard surface is regulated to 100-200lx, at the moment, the current duty ratio of the first channel light source in the intelligent blackboard lamp is set to 14.2%, and the current duty ratio of the second channel light source is set to 12.4%.
Through the illumination regulation and control based on the scene mode, the refined dynamic regulation can be provided for different application scenes or different time periods, the brain excitation degree can be improved in a targeted manner, the concentration degree is enhanced, and the learning efficiency is improved.
In conclusion, the intelligent control system for the lamp and the light environment regulation and control method thereof provided by the invention can automatically regulate and control illumination according to the change of ambient light, so that the light environment parameters in an illumination space are maintained in a proper range interval, and local over-brightness or over-darkness is avoided, so that the eye comfort level can be improved, the visual fatigue is favorably relieved, the visual effect is improved, the eye load is reduced, and the eyesight is protected; through carrying out illumination regulation and control according to the scene mode, can provide refined dynamic illumination regulation to different application scenes or different time quantums, can pertinence improvement brain excitement degree, strengthen concentration degree, improve learning efficiency.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (12)
1. The intelligent lamp control system is characterized by comprising an intelligent lamp, a spectrum illumination sensor and an Internet of things gateway, wherein the intelligent lamp and the spectrum illumination sensor are respectively in communication connection with the Internet of things gateway, and a light source of the intelligent lamp comprises two channel light sources;
the spectral illumination sensor is used for collecting ambient light parameters and sending the ambient light parameters to the Internet of things gateway, wherein the ambient light parameters comprise the relative spectral power distribution of ambient light and the illumination of the ambient light;
the Internet of things gateway is used for generating a control instruction according to the ambient light parameters sent by the spectrum illumination sensor and sending the control instruction to the intelligent lamp, wherein the control instruction is a lamp turning-on instruction, a lamp turning-off instruction or an adjusting instruction, and the adjusting instruction comprises a color temperature adjusting instruction and a current adjusting instruction;
and the intelligent lamp is used for carrying out corresponding operation according to the control instruction sent by the Internet of things gateway.
2. The intelligent light fixture control system of claim 1, further comprising a control panel, the control panel being in communication with the internet of things gateway;
the control panel is used for receiving a mode selection instruction and sending a scene mode corresponding to the mode selection instruction to the Internet of things gateway;
the Internet of things gateway is further used for acquiring corresponding intelligent lamp configuration information according to the received scene mode, generating a corresponding control instruction according to the corresponding intelligent lamp configuration information, and sending the corresponding control instruction to the intelligent lamp.
3. The intelligent lamp control system according to claim 2, further comprising a remote control end, wherein the remote control end is in communication connection with the internet of things gateway;
the remote control end is used for sending a control instruction to the Internet of things gateway;
and the Internet of things gateway is also used for sending the control instruction sent by the remote control end to the intelligent lamp.
4. The intelligent control system for the lamp according to claim 3, wherein the remote control end is further configured to receive a mode selection instruction, and send a scene mode corresponding to the mode selection instruction to the internet of things gateway.
5. The intelligent control system for lamps according to any one of claims 1 to 4, wherein the light source of the intelligent lamp comprises a first channel light source and a second channel light source;
the color temperature range of the first channel light source is 2725 +/-50K, and a color point is in a 3-step MacAdam elliptical area taking a central point as a first central point, and the coordinates of the first central point are (0.4578, 0.4101);
the color temperature range of the second channel light source is 6532 +/-200K, and a color point is in a 4-step MacAdam elliptical area with a central point as a second central point, and the coordinates of the second central point are (0.31223, 0.0.3283);
the spectral continuity of the first channel light source is greater than or equal to 80%, and the spectral continuity of the second channel light source is greater than or equal to 85%.
6. A light environment regulation method based on the intelligent lamp control system as claimed in any one of claims 1 to 5, characterized by comprising the following steps:
collecting ambient light parameters according to a preset period, wherein the ambient light parameters comprise the relative spectral power distribution of ambient light and the illuminance of the ambient light;
according to the illuminance of the ambient light and a preset illuminance value, turning on the intelligent lamp, turning off the intelligent lamp or adjusting the output current of a light source of the intelligent lamp;
calculating the spectrum continuity according to the relative spectrum power distribution of the environment light and the relative spectrum power distribution of a preset standard light source;
and if the spectrum continuity is smaller than a preset ratio, respectively adjusting the current duty ratios of the two channel light sources of the intelligent lamp.
7. The light environment regulation method according to claim 6, wherein the turning on of the smart lamp, the turning off of the smart lamp, or the adjustment of the output current of the light source of the smart lamp according to the illuminance of the ambient light and a preset illuminance value is specifically:
if the illuminance of the ambient light is greater than a preset maximum illuminance value, turning off the intelligent lamp or reducing the output current of the intelligent lamp according to a preset adjustment step length;
and if the illuminance of the ambient light is less than the preset minimum illuminance value, the intelligent lamp is started or the output current of the intelligent lamp is increased according to the preset adjustment step length.
8. The light environment regulation method according to claim 6, wherein the calculating of the spectral continuity according to the relative spectral power distribution of the ambient light and the relative spectral power distribution of a preset standard light source specifically comprises:
calculating the spectrum continuity according to a spectrum continuity calculation formula
Wherein, C S Denotes spectral continuity, Y R (lambda) represents a spectral power value at a wavelength of lambda in a relative spectral power distribution of a predetermined standard light source, Y T (λ) represents a spectral power value at a wavelength λ in the relative spectral power distribution of the ambient light, Δ λ =1nm, and (a, b) is a preset wavelength range.
9. The light environment regulating method according to claim 8, wherein a =380nm, b =780nm, and the preset ratio is 85%, or a =425nm, b =690nm, and the preset ratio is 90%.
10. A light environment regulation method according to claim 6, wherein the current duty cycles of the two channel light sources of the intelligent lamp are respectively adjusted specifically as follows:
determining a target mixed color temperature according to a preset standard light source, and determining a coordinate value of a central point of a color point of mixed light color according to the target mixed color temperature;
respectively obtaining color coordinates of two channel light sources of the intelligent lamp under a preset condition, wherein the preset condition is that the current duty ratio is 100%;
respectively calculating the photometric quantity of the two channel light sources under a preset condition according to the rated output current of the intelligent lamp and the rated current, the rated luminous flux and the number of parallel branches of the two channel light sources of the intelligent lamp, and determining the photometric quantity of mixed light according to the photometric quantity of the two channel light sources under the preset condition;
calculating target current duty ratios of the two channel light sources according to the color coordinates and the photometric quantity of the two channel light sources of the intelligent lamp under the preset condition, the coordinate values of the color points and the central points of the mixed light colors and the photometric quantity of the mixed light;
and respectively adjusting the current duty ratios of the two channel light sources of the intelligent lamp according to the target current duty ratios of the two channel light sources.
11. A light environment regulation method according to claim 10, wherein calculating target current duty ratios of two channel light sources of the intelligent lamp according to color coordinates and photometric quantity of the two channel light sources under a preset condition, color point center point coordinate values of the mixed light, and photometric quantity of the mixed light specifically comprises:
calculating target current duty ratios of two channel light sources of the intelligent lamp according to a current duty ratio calculation formula, wherein the current duty ratio calculation formula is as follows:
D c Y c +D w Y w ＝Y m
wherein R is c ＝Y c /y c ，R w ＝Y w /y w ，Y c And Y w Respectively, the photometric quantities of the two channel light sources under preset conditions, (x) c ，y c ) And (x) w ，y w ) Color coordinates of the two channel light sources under preset conditions, D c And D w Target current duty cycles, Y, for two channel light sources, respectively m As a measure of mixed light, x m Is the x-coordinate value of the center point of the color point of the mixed light.
12. The light environment regulating method according to claim 6, further comprising:
presetting a scene mode and intelligent lamp configuration information corresponding to the scene mode;
when a scene selection instruction is received, determining a scene mode corresponding to the scene selection instruction;
and acquiring corresponding intelligent lamp configuration information according to the determined scene mode, and respectively adjusting the color temperature and the current duty ratio of two channel light sources of the intelligent lamp according to the corresponding intelligent lamp configuration information.
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| CN117320218B (en) * | 2023-11-28 | 2024-02-20 | 杭州亿时照明工程设计有限公司 | Comfort consistency control method for intelligent lighting system |
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