CN113961026B - Environmental illumination simulation system based on multi-primary-color spectrum superposition process - Google Patents

Abstract

An ambient illumination simulation system based on a multi-primary color spectrum superposition process, comprising: an analog light source having: a case constructed of a light-impermeable material; the integrated circuit board comprises a plurality of circuit board units spliced in a hexagon, and all the units are laid in the box body in a splicing mode; the LED primary color lamp beads comprise a plurality of channels of LED primary color lamp beads, and the spectral characteristics of the LED primary color lamp beads in each channel are the same; the plurality of LED lamp beads are uniformly arranged on each unit of the integrated circuit board; the power supply controller is arranged on the box body and is electrically connected with the integrated circuit board and the LED lamp beads; and the simulation computing device can accurately split and simulate the ambient light through the scheme.

Description

Environmental illumination simulation system based on multi-primary-color spectrum superposition process

Technical Field

This patent belongs to image processing technology field, particularly relates to an environmental illumination analog system based on polybase color spectral superposition process.

Background

The LED light source is widely applied to various industries due to the advantages of environmental protection, energy conservation, long service life, rich colors and the like, or used as a signal indicating lamp or a lighting source. In the aspect of household lighting, with the appearance of new words such as big health, intelligent furniture and healthy lighting, people have new requirements on household lighting light, such as color temperature and brightness can be adjusted, and even intelligent control can be realized. In the aspect of commercial lighting, environmental lighting capable of faithfully reproducing colors is also required to be higher and higher in consumer electronics display flagships such as brand clothing stores, jewelry stores, mobile phones and the like in superstores, for example, the color rendering index of lighting light is not lower than 85. The imaging technology has higher relative requirements with the image reproduction industry, and the related industry of the camera requires that the spectrum of the light source in the imaging color calibration of the imaging equipment meets the standard, such as the standard spectral power distribution specified by the International Lighting Association; the requirement of the image reproduction industry on the illumination environment, the CRI (color rendering index) greater than 95 and the like. The new requirements of new state promote the development of the mixed light source technology using the LED as the primary color, and light sources with adjustable color temperature and brightness such as 2 primary colors, 4 primary colors and the like appear in the market, thereby meeting the requirements of partial markets to different degrees.

In recent years, the research of a multi-channel mixed light source with LEDs as primary colors is proposed, and the technical development target tends to simulate the application technology development of sunlight spectrum: 1) in order to meet the use of standard photochromic calibration in the imaging technical field, a scientific-grade light source is needed, the light source needs adjustable spectrum, the spectral range is not only in the visible light range of 380-780nm, but also can be expanded to 940nm or even 1050 nm; 2) in order to meet the use requirements of health illumination, intelligent illumination and the like, the color temperature and the brightness of a light source need to be intelligently adjustable, and the change of the color temperature of the simulated sunlight from morning to evening, such as the adjustment range of the color temperature needs to realize the range of 1600-25000 and the like; 3) in order to meet the requirements of standardized lighting environments in the video reproduction and reproduction industry, the spectral power distribution of the light source is required to meet the requirements of standard light sources such as CIE A, B, C, D50, D55, D65, D75 and the like, the color rendering index is not lower than 90, and the illumination intensity is not lower than 3000Lux and the like.

The mixed color light source using LED as primary color mainly aims at realizing the adjustability of color temperature and brightness, and can be divided into two types: one is a matching method with color coordinates as a target value, and the other is a matching method with spectra as a target. The matching mode of the color coordinates is metamerism colors, and at present, the color coordinates mainly have two primary colors, four primary colors and the like. The two primary colors are mixed, namely the primary colors participating in mixing are composed of 2 LED lamps, such as the mixture of a cold white LED and a warm white LED, and the color temperature adjusting range of the mixed color light can only be between the color temperatures of the two primary colors. The four-primary-color light mixing means that primary colors participating in mixing are composed of 4 LED lamps, such as RGB + white (warm white or cold white), compared with two primary colors, the four-primary-color light mixing color rendering index is improved, the matching accuracy of color coordinates is improved greatly, the color temperature adjusting range is wide, and due to the fact that the coefficient solution of the four primary colors is not unique when the same color temperature is matched, the spectrum is not fixed or the spectrum distribution range is not ideal. The matching mode taking the spectrum as a target expects the matching with the same spectrum, a plurality of primary colors participating in mixing are needed, for example, a scheme of adopting 11, 14 and 15 channels is adopted, and the spectral power distribution is adjustable by optimizing LEDs with different peak wavelengths, wherein the wavelength range is 350-700nm or 400-730 nm. Multi-channel light mixing requires the primary color LEDs to be optimized in hardware, how many, how wide the individual distribution needs to be addressed, etc. The multichannel mixed light requires to develop a spectrum matching algorithm on software, the spectrum matching precision is a challenge, the distribution property of the spectrum of the primary colors of the LED needs to be planned, and the distribution property is limited by the distribution state of the spectrum of the LED. Compared with a low channel, the multi-channel light mixing mode solves the problems of low color rendering index, low color coordinate matching precision, large color temperature error and the like, realizes the simulation of spectral light distribution conceptually, and is a research direction and a solution of the current light source color matching technology.

According to the colorimetry calculation theory, the color temperature of the mixed color light of the two primary colors can only be between the color temperatures of the two primary colors, when the same color temperature is matched, the number of the used primary colors is unchanged, the solution is unique, but sometimes the color temperature deviates far from the black body track, the color difference is more than 0.005, the requirement of national standard on the color coordinate precision is not met, the color rendering index is low, and the method is suitable for common household illumination.

Compared with the two primary colors, the four primary colors have the advantages that the color rendering index can be improved, the matching precision of color coordinates is improved greatly, the color temperature adjusting range is wide, when the color coordinates of a black body are matched, if a circular correction algorithm is configured, the color coordinates can be close to the black body track, the color is good in vision, and the requirement of national standard precision can be met in most cases.

The matching mode with the spectrum as the target expects the same spectrum matching, and a plurality of primary colors, for example, more than 10 primary colors, are needed to participate in the mixing, so that the difficulty of the algorithm for selecting the primary colors and matching the spectrum is great. And due to the limitation of the existing LED primary color spectrum, the algorithm for realizing CIE standard light source spectral distribution matching with higher precision or products are fewer. The existing multi-channel LED color light mixing mode can complete the matching of CIE standard light sources, but the difference of the multi-channel LED color light mixing mode with spectral curves such as CIE A, CIE B and CIE D series is still very obvious, the multi-channel LED color light mixing mode is limited by the optional LED number and the primary color spectral distribution characteristics, and the simulation of sunlight spectrum cannot be completed or is difficult to complete.

Disclosure of Invention

In view of this, to solve the above technical problems or some technical problems, the present invention provides an ambient light simulation system based on a multi-primary-color spectrum stacking process, so as to accurately simulate the spectral characteristics of ambient light.

In order to solve the technical problem, the technical scheme provided by the patent comprises:

an ambient lighting simulation system based on a multi-primary color spectrum superposition process, the system comprising: an analog light source having: a case constructed of a light-impermeable material; the integrated circuit board comprises a plurality of circuit board units spliced in a hexagon, and all the units are laid in the box body in a splicing mode; the LED primary color lamp beads comprise a plurality of channels of LED primary color lamp beads, and the spectral characteristics of the LED primary color lamp beads in each channel are the same; the plurality of LED lamp beads are uniformly arranged on each unit of the integrated circuit board; the power supply controller is arranged on the box body and is electrically connected with the integrated circuit board and the LED lamp beads; the simulation computing device comprises a target parameter acquisition module, a simulation computing module and a simulation computing module, wherein the target parameter acquisition module is used for acquiring a target parameter and acquiring a parameter of a target environment to be simulated; the fitting wavelet screening module is used for screening out a plurality of single-channel fitting wavelets combined into a plurality of target parameters according to the target parameters; wherein the screening comprises using the formula:

obtaining;

wherein y represents a target spectrum; x represents the waveform of a single channel spectrum; a is _i b _i c _i Is a coefficient, wherein a _i May not be a negative value; i is from 1 to n, representing the number of channels; a is _i The physical meaning of the value is that it can represent the proportion of primary colors involved in the color mixing, b _i The physical meaning of the value is that it can represent the position of the peak participating in the color mixing primary channel, c _i The physical meaning of the value is that it can represent the bandwidth of the participating color mixing primary color channel; and the primary color light source determining module is used for determining a primary color light source corresponding to each single-channel fitting wavelet and driving parameters thereof based on the screened single-channel fitting wavelets.

Preferably, in the primary color light source determining module, it is determined whether each of the primary fitting wavelets has a corresponding single-channel primary color light source, if there is no corresponding single channel, the primary fitting wavelet is used as a target parameter to screen out a next-stage fitting wavelet, and this process is repeated until single channels corresponding to all the primary wavelets and drive parameters of the single channels are obtained.

Preferably, determining whether each of the first-order fitted wavelets has a corresponding single-channel primary color light source comprises determining whether a spectral data range of the fitted wavelet overlaps a range of the single-channel primary color light source within a predetermined range.

Preferably, the apparatus further comprises a single-channel linear rectification module for: acquiring single-channel primary color data, wherein the primary color data comprise an illuminance value or a spectral power distribution parameter of a primary color lamp under a driving signal from a minimum value to a maximum value; when linear correction is carried out for the first time, the power supply controller recording the single channel transmits direct current to the single-channel basic color lamp from 0 according to a certain driving signal step length until the basic color lamp reaches the brightest state, an ambient light measuring sensor is used for recording the illumination or spectral power distribution parameter of the light-emitting state of each step length, and the parameters are recorded into a table according to the corresponding relation; when the linearization correction is not carried out for the first time, intercepting the step value when the lowest illuminance value of the ambient light sensor reacts as the initial value of the linearization data, then sequentially adjusting the current according to the step value and recording the corresponding illuminance value or the peak value of the spectral power distribution until intercepting the data recorded when the ambient light sensor has the first maximum illuminance value reaction as the final value of the linearization data; and S002, determining a linear function relation between the step value and the illumination value or the spectral power distribution parameter according to the primary color data of the single channel.

Preferably, the analog computation means further comprises: the precision determining module is used for determining whether the simulation precision of the simulation scheme is within a preset range; and if the simulation precision exceeds the preset range, adjusting formula parameters of the fitting wavelet screening module to rerun the fitting wavelet screening module, the primary color light source determining module and the precision determining module.

Preferably, the power supply controller generates direct current, and the current precision of the direct current transmitted to the primary color lamp beads is within 0.002 mA.

Preferably, a light softening plate is disposed on one surface of the case.

Preferably, the inner wall of the case is black.

Preferably, the simulated light source further comprises an ambient light sensor, and the ambient light sensor is arranged at four corners of the top of the box body.

Preferably, the LED lamp beads of the same channel are connected with the same power controller.

This patent can accurately be with the spectrum split of environment a plurality of passageways through above-mentioned system to simulate out suitable environment light source spectrum through stable multichannel light source.

Drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the embodiments of the present specification, and other drawings can be obtained by those skilled in the art according to the drawings.

Fig. 1 is a schematic structural diagram of an ambient illumination simulation light source based on a multi-primary color spectrum superposition process according to an embodiment of the present disclosure;

FIG. 2 is a schematic diagram of a primary LED light source according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a primary LED light source according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a lamp panel arrangement structure on the bottom surface of the box body in the specific embodiment of the present invention;

FIG. 5 is a flow chart of the method of the present patent;

fig. 6 is a flow chart of a light source matching process.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

For the purpose of facilitating understanding of the embodiments of the present application, the following description will be made in terms of specific embodiments with reference to the accompanying drawings, which are not intended to limit the embodiments of the present application.

The present embodiment provides an ambient light simulation light source system based on a multi-primary-color spectrum stacking process, so as to simulate a target lighting environment. The system provided in the present embodiment preferably includes two parts, a light source device 1 and an analog device as a virtual device.

The light source device 1 includes: the LED packaging box comprises a packaging box body 2, a plurality of LED primary color light sources 3, an integrated circuit board 4, a power supply controller 5, an ambient light measuring sensor 6 and a light softening plate 7.

The whole of the packaging box body 2 is made of a lightproof material, and in the present embodiment, the box body can be made of metal, plastic or paper with high strength. The box body plays a role in bearing each part on one hand, and plays a role in blocking the light source on the other hand. The box body includes a bottom plate 8, side plates 9, and a top plate 10, and the box body takes the shape of a rectangular parallelepiped as shown in fig. 1 in the present embodiment, but the shape of the box body is not limited thereto, and includes a circular truncated cone, a cylinder, a truncated pyramid, a prism, a cube, and the like. The inner wall of the box body is black and is insulated from the outside.

In this embodiment, as shown in fig. 1, the integrated circuit board 4 is laid on the bottom plate of the box body, the integrated circuit board 4 is preferably formed by splicing a plurality of hexagonal units, the hexagonal arrangement light-emitting uniformity tends to be more annular, the uniformity is good, and each module can be controlled independently or cooperatively. In the specific embodiment, each module is formed by the hexagon, so that the light source is convenient to assemble, and the corresponding modules can be adjusted, added and subtracted as required. And, because the hexagon has higher stability and is similar to a circle, the uniformity of the light source is good.

The multicolor LED primary-color light source 8 comprises a plurality of LED lamp beads 11, the circuit board and the lamp beads are both connected with a power supply, and the lamp beads are LED lamp beads and comprise narrow-band LED lamp beads and broadband LED lamp beads. Thereby forming a mixed light source with a spectral coverage range of not less than 360-830 nm. Preferably, the LED lamp beads are arranged at the corner positions of the hexagonal unit, and preferably, the LED lamp beads of 6 primary colors are arranged on one module. Therefore, the LED lamp beads can be arranged relatively uniformly and stably, and a good color mixing effect is obtained. The LED lamp bead is an indispensable element of an environment illumination simulation system.

And the power supply controller 5 is arranged on the box body, is electrically connected with the integrated circuit board 4 and the LED lamp beads 12 and supplies power to the LED lamp beads 11. The power supply controller generates direct current, and in order to meet the requirement of light source stability, the current precision of the direct current transmitted to the primary color lamp is required to be controlled within 0.002mA, and the power supply controller has good linearity.

Ambient light sensors 6 arranged at the top of the box, preferably at the four corners of the box top, such that ambient light parameters can be measured at a plurality of locations to take into account the performance of the ambient light source from a plurality of points. The ambient light sensor comprises a spectrometer for measuring a spectrum, a color temperature meter and a illuminometer. Spectral power distribution, color temperature, illuminance, and the like at the corresponding positions are measured by these sensors.

And the light softening plate 7 is arranged on an opening on the upper surface of the packaging box body 2. The light softening plate is a light emitting surface of mixed light, can scatter single LED light rays or a comprehensive light source on the circuit board module to complete spatial mixing, and has certain uniformity, for example, the difference between the four corners of the light emitting surface divided into a squared figure and the center is less than 5%.

The system in this embodiment utilizes the light source described above to achieve the simulation and provides the following data processing means to control the light source. The data processing device comprises the following modules:

single-channel linear correction module

In this embodiment, the channel is a specific spectrum, and the hardware corresponding to the channel is physically implemented by lamps having the same spectral characteristics, for example, a set of lamps that theoretically or purposely emit light having the same spectral characteristics in a light source.

In this embodiment, the single-channel linear rectification module performs linear rectification on each channel. The linear correction means that the input driving current and the output spectral characteristic of the light source corresponding to the channel show a substantially linear variation relationship. Adjusting the output characteristics of the light source based on the light source input signal can be achieved by linear correction for a single channel. Therefore, the single-channel linear correction module is an initialization module for system operation and is a precondition for stable and ready system operation. And according to the matched ambient light parameters, a basic channel capable of simulating the spectral power distribution of the ambient light is optimized, so that the application scene can be constructed. Primary color channel linearization is the building of fundamental data between primary color channel hardware and intelligent matching algorithms.

In this embodiment, the specific working process of the single-channel linear rectification module includes:

s001, primary color data of a single channel are obtained, wherein the primary color data comprise illumination values or spectral power distribution parameters of a primary color lamp under a driving signal from a minimum value to a maximum value

In this module, it is preferable to adopt a specific operation that, for example, when the linear correction is performed for the first time, the power controller recording a single channel sends a direct current to the single-channel basic color lamp from 0 according to a certain driving signal step length until the basic color lamp reaches the brightest state, and records the illuminance or spectral power distribution parameter of the lighting state of each step length by using the ambient light measuring sensor, and records the illuminance or spectral power distribution parameter in a table according to the corresponding relationship.

When the linearization correction is not carried out for the first time, the step value when the lowest illuminance value (greater than 0) of the ambient light sensor reacts is intercepted and is taken as the initial value of the linearization data, then the current is sequentially adjusted according to the step value and the corresponding illuminance value or the peak value of the spectral power distribution is recorded until the data recorded when the first maximum illuminance value of the ambient light sensor reacts is intercepted and taken as the final value of the linearization data.

S002, determining a linearization relation, and determining a linear function relation between the step value and the illumination value or the spectral power distribution according to the primary color data of the single channel and the step value for linearization

In this module, it is preferable to implement the following two cases, first drawing a curve between the step value and the illuminance value or the peak value of the spectral power distribution, and if the curve is linear, fitting a linear function as the linearized relation of the primary colors; if the curve is non-linear, a lookup table of step size values and illumination values or peak values of spectral power distribution is established, and data between step sizes is solved by using proximity interpolation to serve as a linear relation of the primary colors.

Thereby establishing a linearization relationship for each channel one by one.

Although the light source needs to be linearized, the linearization needs not to be performed every time the method of the patent is performed, because the linearization takes a long time and thus the primary light source can be linearized once in a certain period of time, or the light source after being linearized and corrected is selected when the light source is selected to be installed.

Target spectrum automatic matching module

The module is used for optimizing primary color channels, calling linearized data and obtaining an optimal fitting spectrum by taking the matched ambient light spectrum and illumination as target values. The working process of the target spectrum automatic matching module comprises the following steps:

s101, acquiring target parameters

In this module, parameters of the target environment to be simulated are obtained. Target parameters can be obtained through input, for example, parameters such as a target spectrum, a target illumination value, a color temperature, a color rendering index and the like are obtained through input; the system can also measure and acquire parameters such as target spectrum, target illumination value, color temperature, color rendering index and the like through an ambient light sensor configured by the system.

The target parameter is a target value that simulates the relevant environment. After the target parameters are determined, corresponding light sources can be adjusted according to the target parameters to realize matching.

S102, screening out a plurality of first-order fitting wavelets according to the target parameters

Then, primary color channels are optimized, the target spectrum is decomposed into the optimal primary color channel combination by using a primary color optimization scheme algorithm, and the proportional coefficient of each primary color combination is recorded.

The core algorithm is as follows:

wherein y represents a target spectrum, a _i b _i c _i Is a coefficient, wherein a _i Not be a negative value; i is from 1 to n, representing the number of channels. The algorithm uses Gaussian functions to form wavelets, and decomposes a target spectrum to obtain first-level wavelet decomposition parameters including the number of the Gaussian functions and coefficients of the Gaussian functions. a is _i The physical meaning of the value is that it can represent the proportion of primary colors involved in the color mixing, b _i The physical meaning of the value is that it can indicate the position of the peak participating in the color mixing primary channel, c _i The physical meaning of the value is that it can represent the bandwidth of the participating color mixing primary channel.

S103, judging whether each first-level fitting wavelet has a corresponding single channel, if the corresponding single channel does not exist, screening out the next-level fitting wavelet by taking the parameter of the first-level fitting wavelet as a target parameter, and repeating the process until the single channels corresponding to all the first-level wavelets and the driving parameters of the single channels are obtained.

As shown in fig. 2-3, the primary color simulation is performed in the present module, which mainly aims at a) managing the number of LED primary color channels and customizing the primary color channels; b) and recommending an optimal primary color superposition process according to the target spectrum. Spectral primary color priority technical route.

In view of the fact that the bandwidth of the primary color of the LED is narrow, the situation that the result of the first-level wavelet decomposition may have ultra-wide bandwidth exists, the second-level wavelet decomposition is needed, and the multi-level decomposition coefficient can be obtained by circulating once. When the target spectrum is restored, inverse operation is needed to be carried out on the decomposition process, superposition is started from the minimum decomposition, and finally the approximate spectrum of the target spectrum is obtained. x is the waveform of the single channel spectrum.

In this module, the wavelet of the previous level is used as the target parameter, and the algorithm for decomposing the wavelet of the next level composing the wavelet of the previous level is the same as that in the module S102, that is, the wavelet is composed by a gaussian function, and the target spectrum is decomposed. And therefore will not be described in detail in this module.

The decomposition and fitting process of the target spectrum is represented as a tree structure

And then determining a primary color input value, multiplying the proportional coefficient of each primary color channel by the target illumination to obtain the illumination required when each primary color participates in mixed light, calling a primary color linearization relation or a lookup table, and solving the linearization step value of each primary color.

And determining the input value of the power supply controller, and determining the value of the direct current input by the power supply controller according to the current of the power supply controller in the linearization process and the linearization step value.

S104, determining whether the simulation precision of the simulation scheme is within a preset range

The primary color light source screened out has certain difference on spectral parameters from the wavelet obtained by theoretical calculation. It is therefore desirable to simulate the simulation effect of a light source to determine if the simulation scheme can achieve the intended goal.

In this module, the simulated result is obtained using the inverse of the core algorithm described above. In the module, a power supply controller is used for transmitting a pre-calculated current value, outputting each primary color spectrum, adding each primary color spectrum and outputting a target spectrum. Finally, evaluating the simulation precision of the ambient light, evaluating the spectrum error, and calculating the RMSE evaluation curve precision or metamerism index of the fitting spectrum and the target spectrum, wherein the smaller the numerical value, the higher the precision; and calculating the color temperature and the color coordinate of the simulated environment light according to the fitted spectrum, and respectively comparing the color temperature difference and the color difference with the target environment, wherein the color temperature error is required to be within 100K, the color coordinate DeltaUV is required to be less than 0.005 and the like according to the industrial standard.

If the requirement is not met, the modules S101-S103 can be repeated to optimize the primary color combination, so that the use requirement is met. The primary color light source can be adjusted moderately, and then the requirement of the target light source is achieved through a dynamic adjustment mode.

One result of the spectral simulation using the above scheme for CIE standard illuminant A, B, C, D50, D55, D65, D75 can be seen with reference to the following table:

the spectrum of the CIE standard light source can be simulated under the condition of primary grading, wherein the adopted full-spectrum primary colors can be decomposed into narrow-band primary colors in a secondary decomposition mode. If a smooth spectrum is needed, full spectrum primary colors are used, if a sharp spectrum is needed, secondary decomposition is carried out continuously, and narrow-band combination is adopted. The position of "- - -" is drawn in the table, which is the embodiment of the preferred scheme of the technical scheme, and other narrow-band primary colors in the table can be replaced.

The system innovatively provides a technical scheme for matching an optimal primary color channel based on a target spectrum, the optimal narrow-band LED primary color is searched in a target spectrum multi-level decomposition mode to form a multi-primary color channel, and then the target spectrum is fitted through reverse superposition. Theoretically, the technical scheme is most economical and efficient, has high matching precision, provides a scheme for matching primary colors for development of a multi-channel LED light source, and has theoretical guiding significance.

The system designs the basic constitution of software and hardware, and provides a reference technology for the development of a multi-channel LED light source. The primary color channel combination adopts a modular design, six primary colors form a module, and the hexagonal structure can enable the spatial color mixing to be more uniform so as to simulate the retina structure of a human eye. The modular design system is convenient to assemble and is in beneficial match with a primary color optimization scheme. The system is provided with an ambient light sensor, and can be designed to automatically change a light source along with the change of ambient light, so that the requirement of intelligent illumination is met. And the spectrum is adjusted individually, so that the requirements of characteristic tests or special illumination are met. The cyclic correction technology ensures the stability of the operation of the light source and meets the precision requirement of target spectrum matching.

The light source constructed by the system can perfectly match the spectrum of the CIE standard illuminant, the color rendering index can reach more than 99, and the system has no color difference, the color temperature error is within 10K, and the illumination difference is within 20 Lux.

The present system provides a combination of primary colors that simulates the CIE a, B, C, D50, D65, D75 standard illuminant, as shown in fig. 1-6.

Those of skill would further appreciate that the various illustrative components and algorithm modules described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and modules described in the foregoing description are generally described in terms of their functionality for purposes of clarity of illustration. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

The modules of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are described in further detail, it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the scope of the present application.

Claims (10)

1. An ambient lighting simulation system based on a multi-primary color spectrum superposition process, the system comprising:

an analog light source having: a case constructed of a light-tight material;

the integrated circuit board comprises a plurality of circuit board units spliced in a hexagon, and all the units are laid in the box body in a splicing mode; the LED primary color lamp beads comprise a plurality of channels of LED primary color lamp beads, and the spectral characteristics of the LED primary color lamp beads in each channel are the same; the plurality of LED lamp beads are uniformly arranged on each unit of the integrated circuit board; the power supply controller is arranged on the box body and is electrically connected with the integrated circuit board and the LED lamp beads;

and a simulated computing device comprising

The target parameter acquisition module is used for acquiring target parameters and acquiring parameters of a target environment to be simulated;

the fitting wavelet screening module is used for screening out a plurality of single-channel fitting wavelets combined into a plurality of target parameters according to the target parameters; wherein the screening comprises using the formula:

obtaining;

wherein y represents a target spectrum; x represents the waveform of a single channel spectrum; a is _i b _i c _i Is a coefficient, wherein a _i May not be a negative value; i is from 1 to n, representing the number of channels;a _i the physical meaning of the value is that it can represent the proportion of primary colors involved in the color mixing, b _i The physical meaning of the value is that it can indicate the position of the peak participating in the color mixing primary channel, c _i The physical meaning of the value is that it can represent the bandwidth of the participating color mixing primary color channel;

and the primary color light source determining module is used for determining a primary color light source corresponding to each single-channel fitting wavelet and driving parameters thereof based on the screened single-channel fitting wavelets.

2. The system for simulating ambient lighting based on a multi-primary color spectrum stacking process according to claim 1,

and in the primary color light source determining module, judging whether each primary fitting wavelet has a corresponding single-channel primary color light source, if no corresponding single channel exists, screening out the next-level fitting wavelet by taking the primary fitting wavelet as a target parameter, and repeating the process until the single channels corresponding to all the primary wavelets and the driving parameters of the single channels are obtained.

3. The system of claim 2, wherein determining whether each primary fitted wavelet has a corresponding single-channel primary light source comprises determining whether a spectral data range of the fitted wavelet overlaps a single-channel primary light source range within a predetermined range.

4. The system according to claim 1 or 2, wherein the apparatus further comprises a single-channel linear correction module, the single-channel linear correction module is configured to:

acquiring single-channel primary color data, wherein the primary color data comprise an illuminance value or a spectral power distribution parameter of a primary color lamp under a driving signal from a minimum value to a maximum value; when linear correction is carried out for the first time, the power supply controller recording the single channel transmits direct current to the single-channel basic color lamp from 0 according to a certain driving signal step length until the basic color lamp reaches the brightest state, an ambient light measuring sensor is used for recording the illumination or spectral power distribution parameter of the light-emitting state of each step length, and the parameters are recorded into a table according to the corresponding relation; when the linearization correction is not carried out for the first time, intercepting a step value when the lowest illuminance value of the ambient light sensor reacts as an initial value of the linearization data, then sequentially adjusting the current according to the step value and recording the corresponding illuminance value or the peak value of the spectral power distribution until intercepting data recorded when the ambient light sensor has the first maximum illuminance value reaction as a final value of the linearization data;

and determining a linear function relation of the step value and the illumination value or the spectral power distribution parameter according to the primary color data of the single channel.

5. An ambient lighting simulation system based on a multi-primary color spectrum superposition process according to claim 1 or 2, wherein the simulation calculation means further comprises:

the precision determining module is used for determining whether the simulation precision of the simulation scheme is within a preset range; and if the simulation precision exceeds the preset range, adjusting formula parameters of the fitting wavelet screening module to rerun the fitting wavelet screening module, the primary color light source determining module and the precision determining module.

6. The system of claim 1, wherein the power controller generates a direct current, and the current precision of the direct current supplied to the primary color lamp beads is within 0.002 mA.

7. The system according to claim 1, wherein a soft light plate is disposed on one surface of the box.

8. The system according to claim 6, wherein the inner wall of the housing is black.

9. The system according to claim 1, wherein the simulation light source further includes ambient light sensors disposed at four corners of the top of the housing.

10. The system of claim 1, wherein the LED lamp beads in the same channel are connected to the same power controller.

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