BLE空中鼠标系统的优化设计与实现

摘要

近年来,空中鼠标应用愈加广泛,但现有空中鼠标存在以下问题:不经意移动鼠标时易使光标处于“未知”位置;采用低通滤波器解决按键抖动的方法易造成光标移动“死区”.针对上述问题,设计了BLE空中鼠标系统方案,提出光标定位法和固定光标法分别解决光标“未知”和光标“死区”问题,同时还提出了角度和加速度结合的方法,以增加光标移动多样性.实验结果表明,所设计的方案和提出的方法有效解决了上述问题,从而提高了空中鼠标的整体性能.%In recent years,the application of air mouse is more extensive,but the existing air mouse has the following problems.(A) User inadvertently moves the mouse when the cursor is in the ‘ unknown’ position.(B) The use of lowpass filter to solve the key jitter method is easy to cause the cursor movement ‘ dead zone’.In order to solve the above problems,this paper introduced the design of BLE air system,and put forward the cursor positioning and fixing method to solve the ‘ unknown’ cursor and the "dead zone" problems respectively.At the same time,the combination of angle and acceleration was proposed to increase the diversity of cursor movement.Experimental results showed that the proposed scheme and the proposed method can effectively solve the above problems,so as to improve the overall performance of the air mouse.