摘要
针对传统传感器无法实现鼠标指针空中运动姿态的感知,通过比较两轴加速度传感器和陀螺仪的差异性,提出了采用两轴陀螺仪来实现鼠标指针定位的方法。详细阐述了两轴陀螺仪静态时旋转角度的测量方法、动态旋转角度变化率的计算、指针灵敏度系数的优化及鼠标指针两维位移变化量(ΔX,ΔY)的计算。考虑到在电压下降或环境温度变化后,陀螺仪会发生零点漂移,提出了一种动态自校正的算法,对零点进行自校正,对完成校正的时间进行了测量,并实现了满意的校正效果。该技术目前已应用于无线空中鼠标之中。
Aiming that traditional sensor can＇t realize the posture sensing of mouse pointer, by comparing the differences between the two-axis acceleration sensor and two-axis gyroscope, the mouse pointer localization method using two-axis gyroscope was put forward, The measurement method for static-state revolving angle of two-axis gyroscope, the change rate calculation of the dynamic revolving angle and the optimization on the sensitivity coefficient of the mouse pointer as well as the △X and △Y calculation of the mouse pointer were expounded in detail. Considering that the voltage drop and the change of environmental temperature would cause the zero drift of two-axis gyroscope, a new algorithm for dynamic self-tuning was presented and satisfactory results were a- chieved. The technology has been integrated into the production of wireless air mouse.
出处
《机电工程》
CAS
2009年第3期105-107,共3页
Journal of Mechanical & Electrical Engineering
基金
浙江省新苗人计划资助项目(2007G60G2040080)
关键词
两轴陀螺仪
旋转角度变化率
鼠标指针
漂移
动态自校正
two-axis gyroscope
revolving angle changing rate
mouse pointer
drift
dynamic self-tuning
作者简介
葛海江（1980-），男，浙江东阳人，主要从事无线人机交互和传感器应用技术方面的研究．E-mail：gehaijiang@163．com
