基于Android系统的五维手写信息采集设备的设计

针对当前各类触摸屏不支持获取手写过程中所施加的三维力的问题，设计了一种五维手写信息采集设备。通过将多维力传感器集成于触摸屏下方，实现了手写过程中三维力和二维位置的准确获取，同时在设备搭载的Android系统中添加了自定义的系统服务模块，使设备从系统级别实现对五维手写信息获取的支持。对于设备在移动环境下使用所产生的干扰问题，它使用加速度传感器结合自适应滤波器技术进行抑制。结果表明该方案可行，设备具有一定的抗干扰能力，且可实现无触控笔操作，方便用户使用。

Design of 5D Handwriting Information Collection Device Based on Android System

Currently most touch screens cannot support the measurement of 3-D forces of handwriting. To address this issue,this paper proposes a design of device that extracts 5-D information of handwriting. By integrating a multi-dimensional force sensor under the touch screen,it acquired 3-D force and 2-D position information accurately. Be?sides,its onboard Android system was incorporated with our customized system service module,thereby fully sup?ports 5-D handwriting information measurement at the operating system level.For the interference produced in the mobile environment,it uses acceleration sensor combining with adaptive filter technology to suppress. The result in?dicates that the proposed scheme has the advantages of good feasibility and better anti-disturbance properties. More?over,users can enjoy the convenience of operating without stylus pen.