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基于视觉暂留原理,提出一种新的线阵LED图文显示装置;将16个LED灯固定在一个木板上,均匀排列在一条直线上,驱动直流电机带动木板旋转,当转速提高到一定的值时,16个LED灯可形成一个稳定的圆平面,通过程序控制面板上16个LED灯的亮灭时间,可在圆平面上显示出不同的文字或图形;在设计中给出了硬件电路设计和软件流程,并根据视觉暂留原理给出了显示算法;实验结果证明:该方法可稳定的显示不同的字符和文字,且无明显的漂移。
Based on the theory of persistence of vision, a new linear array LED graphic display device is proposed. Sixteen LED lights are fixed on a wooden board and uniformly arranged in a straight line. The DC motor drives the wooden board to rotate. When the speed increases to a certain level Value, 16 LED lights can form a stable circle plane, through the program control panel on the 16 LED lights on time, can display different text or graphics on the circle plane; given in the design of the hardware circuit Design and software flow. According to the principle of persistence of vision, a display algorithm is given. Experimental results show that this method can display different characters and texts stably with no obvious drift.