| Ship Meteorological Instrument is a kind of ship borne automated marine meteorological observation system which is widely equipped in a variety of ships and acquire the wind, humidity, temperature, pressure, rainfall and other environment parameters in waters around. According to mastering the real-time weather environment data.it can make the safety of navigation, time-saving, economic, and make the losses caused by severe weather reduce to a minimum. According to saving marine meteorological data.it is of important significance for observing ocean, researching ocean and developing ocean.Modern measure and control systems usually have the high-preformance modules of datum acquiring.signal processing, I/O and commucation. They also have friendly user interface.The ARM microprocessor and embedded Linux operating system have been widely used in the designs of various electronic products because of their excellent performances and lower costs.And more and more developers of roboticized equipments and intelligent instruments like to use them in their designs.The paper is mainly about the design of Data Acquisition and Processing System instrument based on ARM + Linux.The hardware platform includes:the micro processor unit LM3S1138 which is produced by the Luminary Micro Corporation;system memory device such as 64M SDRAM and 8M NAND FLASH, peripheral interface such as including Universal Serial Interface, GPRS communication module interface, network interface; selection of the appropriate sensors based on the actual needs.Software platform mainly includes:set up U-Boot boot loader process, configure and cut out the Linux kernel in accordance with the resources add the source code which are not included in the system drivers,re-compile the kernel, download to the development platform and compile the application on this basis.Handle by GPRS communication transmission to shoreside computer after completing a data. |
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