| Summary: | 碩士 === 國立成功大學 === 電機工程學系碩博士班 === 100 === The objective of this thesis is to develop inertial-sensor-based handwriting technology to improve the existing technical disadvantages of optical interactive handwritten pens. At first, we integrate the inertial-sensing system, the optical-sensing system, and a single chip microcontroller into interactive handwritten pens, and the inertial and optical signals generated by handwriting movements are transmitted to a computer via a RF wireless transmission module. Subsequently, we utilized a sensor fusion algorithm based on an extended Kalman filter to minimize the cumulative errors caused by the intrinsic noise/drift of the inertial sensors. Then, through a firmware and software co-design method, we’ll develop interactive handwritten pens with the functions of pen-holding posture compensation and stroke segmentation trajectory estimation algorithm. Finally, the experimental results have successfully validated that the interactive handwritten pens with below innovative functions: (1) estimation of accurate hand movement orientations and (2) compensation of pen-holding postures and estimation of stroke segmentation trajectories in a two-dimensional writing plane.
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