基于LabVIEW的LED驱动系统研究

Research on LED Drive System Based on LabVIEW

设计一种由ARM单片机模块、压控式恒流源电路模块以及多彩LED灯等组成的LED动态调节系统。以ARM单片机为模拟电压输出的核心,通过LabVIEW软件开发DAC程序,驱动单片机输出模拟电压,压控式恒流源模块根据模拟电压的大小输出恒定电流以驱动LED,旨在为LED色彩混合和光谱调节等领域提供借鉴。

A current dynamic adjustment system for LED lights is designed which is composed of an ARM microcontroller,constant current source circuit and colorful LED lights.The DAC program of the ARM microcontroller is developed by LabVIEW software to control the microcontroller to output logic voltage for the constant current source circuit.The constant current source circuit can output a corresponding constant current according to the numerical value of the logic voltage to drive the LED.It can be used as a reference for LED color mixing and spectrum adjustment.