| Summary: | 碩士 === 輔仁大學 === 電子工程學系 === 97 === In this paper we enhance the program by which the embedded system fetches the touching positions, so that it can do this continuously. We use and process the touching positions to improve aspects of the operation of the human-machine interface, such as the drawing and the shifting adjustment of the arbitrary waveform, so that the operation interface becomes more user-friendly. We also design a mean filter program which adds up and averages the touch point and the neighboring points, so that the arbitrary waveform can be outputted more smoothly. We use an embedded system and an external interface circuit to design and implement an embedded network arbitrary signal generator (ENASG). We build a Web server in the embedded system and use a CGI (Common Gateway Interface) as the network interface between the Web server and the embedded system. The user can use a PC, a PDA or a smart phone to login to the remote operation interface. After the user has selected and adjusted the output waveform, it is outputted through the external interface circuit. Finally, we integrate three instruments into the remote operation interface, a waveform generator, an oscilloscope and a power supply. The measurement result is drawn up by the OpenCV library.
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