11 results about "Color index" patented technology

A music rhythm control method for a vehicle-mounted atmosphere lamp comprises the following steps: dynamically mapping colors of the atmosphere lamp to a cold color system, a middle color system and a warm color system based on a predefined color system division rule; establishing a real-time mapping relationship between frequencies and color systems, and enabling different audio frequency intervals to trigger target color indexes of different color systems; establishing a hierarchical mapping relationship between the amplitude and the brightness; receiving a frequency signal and an amplitude signal generated by audio decoding in real time; determining a target color index and a brightness level through the mapping relation according to the currently received frequency signal and amplitude signal; according to the method and the device, the cold color system, the medium color system and the warm color system can be distinguished to achieve music rhythm, the music rhythm atmosphere better fitting user definition is achieved, and the problem that algorithms are not uniform due to the fact that atmosphere lamps on the market are too many in color type is solved.

The application discloses a kind of detection methods of energetic material mixing uniformity, belong to material uniformity inspection technical field, including steps S1: energetic material is mixed with tracer to obtain mixed sample with different mass ratio, image is illuminated and photographed;Step S2: image is analyzed, and mixed sample with the linear relationship between tracer concentration and the color index is selected as standard sample;Step S3: the standard sample of different concentration is added to mixing device and is mixed, and image is photographed;Step S4: the image of the standard sample after mixing is sampled and the variation coefficient of color index is calculated to evaluate mixing uniformity.The method provided by the application can realize real-time monitoring and detection analysis of the mixing process of energetic material, which is simple, easy to operate and efficient, and can evaluate the mixing uniformity of energetic material by obtaining the image of energetic material with tracer, thus widening the application of online detection in the field of energetic material detection.

This invention discloses an LED spectral distribution optimization design method and an LED light source. The design method includes the following steps: S1, establishing a basis function library based on the Gaussian emission spectral function of phosphor materials; S2, defining the full spectral distribution function and optimization variables of the phosphor mixture; S3, constructing a comprehensive evaluation function and constraints based on color temperature, spectral efficacy, and color rendering index; S4, applying simulated annealing algorithm for optimization, aiming to minimize the comprehensive evaluation function, and globally optimizing the basis function weight vector w; S5, adjusting the comprehensive evaluation function and constraints and iteratively optimizing. This design method is applicable to the spectral control of white LEDs excited by multi-color phosphors, and can achieve synergistic optimization of color rendering index, color temperature accuracy, and luminous efficacy over a wide color temperature range, significantly improving the overall light quality and design efficiency of the LED light source.

To provide LED light-emitting devices and lighting fixtures with excellent color rendering at high color temperatures. [Solution] A light-emitting device comprising one or more LED elements and multiple phosphors, wherein the extracted light from the light-emitting device has a color temperature of 8400 to 10000K, an average color rendering index Ra of 95 or higher, and a special color rendering index R9 of 88 or higher. Furthermore, the extracted light from the light-emitting device has chromaticity coordinates of 0.27 to 0.29 and 0.30 to 0.32 in the chromaticity diagram of the CIE1931 color system.

The invention relates to a mariculture identification method based on active and passive remote sensing wave band coupling color features. The method comprises the following steps: acquiring optical remote sensing data and radar remote sensing data of a seawater area to be identified; performing feature extraction on the radar remote sensing data to obtain structural feature information; performing feature extraction on the optical remote sensing data to obtain spectral feature information; mapping the structural feature information and the spectral feature information to a CIE color space to obtain CIE color index features; and performing classification prediction based on the CIE color index features, and dividing the seawater region to be identified into a seawater culture region and a non-culture region. By adopting the method, the detection accuracy of the mariculture area can be improved.

The application provides an LED multi-light color regulation method and system based on a multi-target evolution algorithm, which firstly acquires the spectrum and electric power data of each single-color LED, and pre-processes the data by combining a cubic spline interpolation method and a fitting function; then each light color index such as a color coordinate, a color rendering index, a color temperature, an SDCM value and power consumption is optimized by designing an evaluation function; the core of the algorithm is to use a multi-target genetic algorithm to iteratively optimize the population through individual evaluation, survival of the fittest, genetic and mutation operations until the optimal PWM combination meeting all the light color index requirements is found. Specifically, the method has the advantages of strong flexibility, good expansibility and the like, can adapt to different LED channel configurations, and provides a light color regulation scheme with strong pertinence, and is particularly suitable for factory adjustment of a phosphor-free multi-primary color LED lamp, and provides an efficient and automated solution for light color optimization.

The application relates to a pipeline water quality monitoring and automatic control device based on color detection, relating to the technical field of water quality monitoring and pipeline control, which comprises a color detection device, a control module, a sewage discharge valve and a recycled water control valve. The color detection device is arranged on a sampling branch connected with a main pipeline, adopts a self-provided light source to detect the color index of water flowing through the sampling branch, and provides a water quality state signal for the control module. The sewage discharge valve is arranged on a pipeline between the main pipeline and a sewage discharge port. The recycled water control valve is arranged on a pipeline between the main pipeline and a recycled water outlet. The control module connects the sewage discharge valve or the recycled water control valve to be opened according to the water quality state signal provided by the color detection device. The device can eliminate the interference of ambient light, has high detection precision, can realize a double-threshold judgment mechanism, and is automatically controlled without needing personnel on duty.

The application provides a kind of LED light source uniformity and color deviation detection method, comprising: setting the environmental parameter of constant temperature and humidity test chamber, the environment in the box is monitored in real time by temperature and humidity sensor, when detecting that temperature and humidity deviate from set value, trigger temperature and humidity control system to adjust;According to the initial color characteristic database, LED light source is placed in the constant temperature and humidity test chamber to carry out accelerated aging test, and the spectral data of light source at different time points are obtained by using spectral analyzer;The chromaticity coordinates, color temperature and color rendering index corresponding to the spectral data at different time points are calculated, the color deviation amount of LED light source is calculated, and the change curve of color deviation with time is fitted;According to the accelerated aging test result of LED light source, the color maintenance life of light source under high temperature and high humidity environment is calculated, and the color deviation detection is completed through the color stability uniformity index of LED light source.

This invention provides a method, system, and readable storage medium for searching white dwarfs using a multicolor photometric system, comprising: S1: acquiring a multicolor magnitude table containing extinction-corrected magnitudes for the u, g, and i bands; S2: calculating the color index g-i and composite color index (u-g)-1.5(g-i) for each star based on the multicolor magnitude table; S3: marking the positions of all stars on a two-color map with g-i as the abscissa and (u-g)-1.5(g-i) as the ordinate; S4: selecting stars falling within a pre-defined white dwarf distribution region as white dwarf candidates. This invention analyzes SAGES multicolor photometric data to find an optimal color combination, constructs a two-color map, and delineates exclusive distribution regions for white dwarfs, thereby achieving rapid and high-purity screening of white dwarfs from large-sample survey data.