Research And Design Of Digital Recorder With The Embedded Linux Platform Base On ARM Processor

According to the important role of recording devices and thedevelopment and the status of the recording devices, we thinkwe need to do the research and development work. We useARM chip with an embedded Linux operating system to build thecontrol board, and we use PIC18F258 chip which drive anAD7731 to get our channel board and PIC18F258 chip to get thebridge board.ARM9 series chip have very high function price ratio andhave very complete functions, for example almost all interfacesare integrated, special drives to facilitate the use of the processare also particularly stable, especially the development platformis particularly convenient. we use the LINUX2.4 kernel,configured as our need Framebuffer, USB, LCD, IDE, and otherchoice, through Framebuffer and LCD data to the collection ofthe liquid crystal screen in 640*480, with the realization of a USBdata transfer on the hard disk as a storage area, through thekeyboard to complete the set of the log, we rewrite a part of thedriven process, prepared the application source code, and madeoptimization and testing.The channel panels and bridge board have not onlyrelatively simple structure, but also relatively simple to achievesoftware, access data after Kalman filter to the improvement ofdata accuracy, as well as a try in our application.