摘要
介绍了一种基于MEMS双轴加速度传感器的数字式控制手柄的设计,定义了控制手柄操作的状态参数,证明用基于球面坐标的手柄操作的幅度角和方向角来衡量手柄的操作状态是直观和实用的,文中给出了幅度角、方向角与双轴加速度之间的互算关系。为了进一步分析对这种控制手柄信号的处理方法,设计了一个基于 LabView的信号仿真平台,可以实现对各种手柄操作方式的输出信号进行仿真,还可以选择加入不同的环境噪声,使数据处理算法先通过软件层面的验证,再在微控制器层面上进行实现,有效减小了数据处理算法的设计工作量。
Introduces a digital joystick based on MEMS Dual Axis Accelerometer, using gravity as a positional reference. Gives the definition of state parameters of joystick, one of which is the degree of inclination () and direction (θ) of joystick lever based on spherical coordinates. Presents the relationship between dual axis acceleration and the degree of inclination and direction. For the further signal processing, presents a simulation platform for this digital joystick under LabView, which can simulate various operating manner of joystick with different background noise, and can test in advance the signal-processing algorithm before using it in microcontroller. This simulation platform really makes the signal processing programming much easier.
出处
《电子器件》
CAS
2005年第1期16-19,共4页
Chinese Journal of Electron Devices
基金
国家863项目资助(2003AA430200)。
