| Summary: | 碩士 === 國立中興大學 === 機械工程學系所 === 95 === The thesis is to implement a desktop-free wearable mouse. The conceptual idea of the glove mouse is to imagine holding a virtual tracking ball in the hand. By coordinating the rolling of the hand and bending of the thumb or the index finger, the cursor on the screen will move in a polar coordinate system. The study also tests and analyzes the operating efficiency and movement accuracy of the glove mouse.
When the hand rolls, the tilt sensor on the metacarpus detects the rolling angle which determines the orientation of the direction line of the cursor movement. By bending the thumb or the index finger, the bending sensor will decide the magnitude of the cursor movement along the established direction line. Since the sensor signals represent coordinates in the polar coordinate system and mouse interface USB IC processes mouse signals in terms of Cartesian coordinates, a data conversion is required. Firstly, interpolation is used to divide the rolling angle into equal parts and the direction of the cursor movement is determined. Secondly, the path of the cursor movement is computed by Bresenham algorithm in which all calculations are performed in integers instead of floating point. Thirdly, the control signals are output in USB IC acceptable format to fulfill the cursor movement. By using USB interface, the glove mouse is implemented with the USB mouse IC connecting to the computer.
Fitts'' law analysis method is used to evaluate the performance of the cursor operating efficiency and moving accuracy for the glove mouse. A comparison is conducted to evaluate the performance of the optical mouse, the touch pad and the track point. The results reveal that the performance of the glove mouse with virtual tracking ball is almost as twice the performance of the touch pad or track point. Consequently, this glove mouse is highly applicable on the way toward a world congested with mobile devices.
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