Control method and system for optimizing spectrum of lamp bead

Abstract

The invention provides a control method and system for optimizing the spectrum of a lamp bead. The control method for optimizing the spectrum of the lamp bead comprises the following steps: step S1, inputting spectral characteristics of each LED light emitting device in the lamp bead; step S2, calculating an included angle cosine value between an actual output spectrum of the lamp bead and a target spectrum according to the output demands of the target spectrum, and taking the corresponding actual output spectrum when the included angle cosine value is closest to 1 as a spectral calculation value; and step S3, controlling the forward current strength of each LED light emitting device in the lamp bead through the spectral calculation value. By adoption of the method and system provided by the invention, the spectral output total value required for the target spectrum can be met, and the spectral calculation value of the similarity between the actual output spectrum and the target spectrum can also be improved, the necessary target spectrum can be quickly output by using the existing LED lamp bead, so that the cost is low, the period is short, the usage of the LED lamp bead can be well expanded, and the individual needs of users are met.

Description

technical field [0001] The invention relates to a spectrum control method, in particular to a control method for optimizing the spectrum of a lamp bead, and to a control system using the control method for optimizing the spectrum of a lamp bead. Background technique [0002] At present, the common RGB and RGBW LED lamp beads in the market integrate R lamp beads, G lamp beads, B lamp beads and W lamp beads in one lamp bead, that is, integrate red, green, blue, white and other light emitting lights. The light-emitting components of LEDs have different spectral characteristics, such as figure 2 as shown, figure 2 The left side of the center is the spectrum diagram of blue light, green light and red light respectively, and the right side is the synthesized spectrum diagram. [0003] The existing mass-produced LED lamp beads generally have fixed spectral characteristics. However, in some lighting scenarios, there will be special requirements for the spectrum. For example, plan...

AI Technical Summary

Problems solved by technology

However, in some lighting scenarios, there will be special requirements for the spectrum. For example, plant growth lighting needs to be enhanced in certain spectral frequency bands; There are some defects in this method: first, the realization period is long; second, the cost of custom production or synthesis of multiple lamp beads is very high; third, it can only meet one spectral frequency band fixedly. demand, cannot be changed flexibly

[0004] The applicant also proposed before the spectrum synthesis of LED lamp beads to achieve the minimum energy difference between the output spectrum and the target spectrum through the calculation method of variance and minimum, but this method does not guarantee that the spectra of the two are the most similar. Therefore, in practical applications, it still cannot meet the actual needs well

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