高精度高灵敏体感空中鼠标的发射端设计

针对现有体感空中鼠标姿态解算精度不够高和响应不够快的问题,设计了高精度灵敏便携式体感空中鼠标发射端.采用STM32处理器实时采集传感器数据.采用传感器内部集成的数字运动处理单元(Digital Motion Processing,DMP)获得四元数,再通过数学公式运算得到欧拉角,之后使用互补滤波校正算法解算出人体手部姿态.采用无线模块将数据发送至接至PC机接收端,与电脑进行交互,实现体感鼠标功能.最后通过实验验证方案的有效性和可靠性,实验结果表明,相比欧拉角法和方向余弦法,该方案提出的基于四元数法并加入校正算法的姿态解算方法具有计算量小、运算速度快及精度高的特点.

Transmitting Terminal Design of High Accuracy and Sensitivity Somatosensory Air Mouse

To solve the problem that the accuracy and the reaction speed of the attitude algorithm is not high enough,the transmitter of a somatosensory air mouse with high accuracy and sensitivity is designed in this paper.The STM32 processor is used to collect sensor data in real time Sensor data is acquired in real-time by using STM32 processor,and the quaternion and Euler angles are obtained through the digital motion processing unit (DMP) which is integrated in the sensor and mathematical formulas.And then the human hand posture can be calculated after complementary filtering algorithm.Wireless data is transmitted to the receiving terminal by wireless module.Then the data is sent to the personal computer (PC) to interact with the computer and implement the mouse function.Finally,the validity and reliability of the design are verified by experiments.The experimental results demonstrate,compared with euler Angle and direction cosines,the proposed method based on quaternion method and adding correction algorithm has the characteristics of small computation,fast operation speed and high precision.