A programmable led array micro-illumination control method based on fpga

Abstract

The invention discloses an FPGA-based programmable LED array micro-illumination control method. Firstly, based on the FPGA serial port receiving and decoding circuit design, according to the control instructions, the basic graphic data for the programmable LED array display is calculated on site, and the method is carried out. The determination of the circle area, the standard normal distribution of the brightness in the circle, the division of the color area, and then classify and store the data in the on-chip dual-port RAM of the FPGA, and read out and store them in the FPGA chip according to the scanning position of the programmable LED array The display data in the dual-port RAM, and finally use FPGA to quickly and parallelly drive the programmable LED array using multi-row scanning and RGB three-channel separation to display the output data. The invention saves a large number of external storage devices, uses FPGA to drive a programmable LED array, and realizes graphic display and PWM modulation of driving current.

Description

technical field [0001] The invention belongs to the technical field of programmable LED array control, in particular to an FPGA-based programmable LED array micro-illumination control method with low transmission bandwidth and low complexity control. Background technique [0002] Multi-mode microscopic imaging uses the "label-free sample" imaging method to perform microscopic imaging of cell samples without fluorescent powder or dye labeling, avoiding the impact on cell activity caused by "labeling" in traditional microscopic observation. There are generally two ways to achieve multi-mode microscopic imaging. One is to directly use a programmable lighting source, such as a programmable LED array, to control it to display multiple lighting patterns of different colors to achieve multi-mode microscopic imaging. The other is to introduce a light source modulation device at the lighting end, such as a programmable LCD, through which to adjust lighting parameters such as light so...

AI Technical Summary

Problems solved by technology

However, whether it is stored in a non-volatile storage medium in advance or stored in a volatile storage medium during power-on initialization, an additional large-capacity storage medium (201310229029.2) is required, which increases the complexity of control and also increased production costs

Moreover, when stored in a volatile storage medium, a certain amount of initialization time will be required for each power-on initialization

In short, under the condition of using a small amount of limited hardware resources and data transmission bandwidth, how to realize the high-speed display of arbitrary color patterns by programmable LED arrays is a technical problem.

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