4 results about "Color index" patented technology

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.

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.

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.