ATTITUDE DETECTING DEVICE

The present invention relates to an attitude detecting device requiring no optical nor visual sensors but instead using an advanced processing method, which can be used in applications such as data-login, measurements, motion control, cursor pointing on graphic user interfaces, gaming, etc. The device includes inertial measurement units (IMU) such as accelerometers, gyroscopes and may also includemagnetometers. The method utilizes the IMU's sensor data and uses a revised method to transfer 3-dimensional rotations into a representation, such as quaternions, Euler angles, yaw, pitch, and roll.The method also provides better performance when the device recovers from interrupts. The method further utilizes the above mentioned representation and turns it into 2-dimensional values in a preciseway while intentionally remove the effects caused by rotation in the other unused degree of freedom. 本发明涉及种姿势检测设备，所述姿势检测设备既不需要光学传感器也不需要视觉传感器而是使用种先进的处理方法，所述设备可以用于如数据录入、测量、运动控制、在图形用户界面上的光标指点、游戏等应用中。所述设备包括如加速度计、陀螺仪等惯性测量单元(IMU)，并且