基于微加速度计的无线教鞭的设计

为弥补多媒体教学中激光笔的不足,提出了一种基于微加速度计的无线教鞭系统,它不仅具有激光笔上下翻页的功能,而且能在空中自由灵活移动实现高精度点击的功能,该系统以微加速度计ADXL345作为信号检测元件,并采用低功耗低成本微控制器AT89S52和RF芯片nRF24L01进行信息处理与无线传输,符合人体工程学设计,最大限度地满足人们使用鼠标时在手感以及舒适度和使用习惯方面的要求。

Design of the wireless pointer based on micro-accelerometer

To compensate for the lack of laser pointer in multimedia teaching, we propose a wireless pointer system based on micro-accelerometer, which not only has the laser pointer＇s function that can page up and down, but also can move in the air freely and flexibly to achieve high-precision click. The system adopt ADXL345 accelerometer to sense signal, and use low- power and low-cost microcontroller AT89S52 and RF chip nRF4L01 to process and transfer information by wireless, and it＇s ergonomically designed to maximize meet the requirement of people in feel,comfort and habits when using the mouse.