Research On Attitued And Chirogrpahy Detected Instrument Of Handwriting Pen

As an important way to input information to computers, people begin to pay more and more attention to handwriting and this inputting method exist in everywhere in our life. Using a pen writing on a handwritten panel is the most usual way to input information. And information is adopted and transferred to computers and then solved. This information method is 2D-space information input. In this paper, it is the aim to research 3D-space information input method. It can use handwriting pen to write in 3D-space arbitrarily. And then the chirography can be reappeared in computers.Micro-accelerometers,Micro- magnetometer and Micro- gyro mounted on the pen are used in this dynamic handwriting features acquisition system, and data is transmitted to computer for data processing and feature analysis through serial port after A/D conversion.The paper begins with putting up attitude detection system and then it discusses the possibility of establishing the handwriting inputting system in 3D-space. First the paper demonstrate the technical scheme of chirography painted and then the structure of software and hardware are emphatically discussed. After that ,through researching of the error theory about heading angle, we find an effective algorithm to improve the results of chirography. The experiment adopts attitude angle compensation algorithm and general algorithm to paint chirography. The result shows that the compensation algorithm can paint chirography accurately.The system reach the aim of expected design function. At the same time, the paper points out the shortcomings of the system and advices some improvements according to them.