毕业设计---LED旋转显示器的设计

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1、I LED 旋转显示器的设计旋转显示器的设计 摘要摘要 基于视觉暂留原理，开发出了一种旋转式 LED 显示屏。在稳定旋转地载体上安装 16 个 LED 发光器件，静止时，各列发光管等间距分列排开，随着扫描速度的加快，在 计算机软件精确的时序控制下， 不断扫描出预设的文字， 图案等。 磁钢用来完成同步的。 当霍尔传感器旋转到磁钢处，感应到它的存在就会恢复到最初状态，即使前一个过程没 有显示完成。装在电机上的电路始终在高速旋转，我们就无法使用通常的方法来给电机 供电，但可以通过对 220V 电压降压来完成。交流电压通过变压器降为 9V，再通过桥式 整流和 7806 降为 6V， 供直流电机使用。

2、采用时钟芯片 DS1302 以及电池能准确显示时、 分、秒。 关键字：关键字：视觉暂留，直流电机，桥式整流。 II LED Rotating Display Abstract Based on the persistence of vision principle, developed a rotating LED display. Vector rotation in a stable way to install a LED light-emitting device, static when glibenclamide LED rows equally spaced points, wi

3、th the scan rate speeds up, the computer software under the control of precise timing, and constantly scan the default text, patterns and so on. Magnet is used to complete the synchronization. When the Hall sensor to a rotating magnet Division, induction into its existence will be restored to its or

4、iginal state, even if the former does not show the completion of a process. Installed in the motor circuit is always in high-speed rotation, we can not use the usual method to give electrical power supply, but can be done step-down voltage of 220V. AC voltage through the transformer reduced to 9V, then through the bridge rectifier and 7806 fell to 6V, for the use of DC motors. It uses DS1302 to display hour, minute and second excellently. Key words: persistence vision, DC motor, Bridge rectifier