The Design For The Oceanic Station Automatic Observation System Based On ARM

The oceanic station automatic observation system is an equipment which is applicable for waterfront observation.It is responsible to observe meteorological, hydrological parameters in real time.Many parameters are measureed by the corresponding sensor.The oceanic station automatic observation system collects the metrical information and transmits all kinds of marine information to environment monitor forecasting center for weather forecasting and marine forecasting,by the means of wired or wireless communication.This dissertation is based on Chinese " the oceanic station automatic observation system of government procurement plan",focus on the design of low-cost,low-power, high-performance,high- reliability of the new oceanic station automatic observation system.The paper is mainly about the design of the oceanic station automatic observation system based on ARM and uClinux.According to the actual needs,we analyse overall requirements of the oceanic automatic observation system,select the sensors,make the design proposal to complete the whole structure of the system.In order to reduce power consumption of the system,what this system uses is the micro processor unit s3c44b0 which is produced by the Samsung Corporation without memory management unit.System memory device includes 8M FLASH and 64M SDRAM,peripheral interface includes LCD,USB,keyboard and so on.At the same time,in order to reduce the inconvenience caused by drive development,we use TL16C554A to expand the serial circuit,it is easy for data processing and expansibility of the system.Software platform mainly includes:set up BootLoader process,configure and cut out the uClinux kernel which we choose,add the source code which are not included in the system drivers.In order to reduce the research time and difficulty of the development,we select the MiniGUI as the graphical user interface system.This dissertation deeply analyses the structure and principle of the MiniGUI and transplants it to the uClinux system.This system choose the MiniGUI-Threads multithreading mode,the main thread corresponds other threads and processes the data.In order to make the system become operational and simple,we design a good graphical user interface.We use the multiplex I/O to solute obstructions caused by multi-serial communication.At the same time,in order to send the information measured by station to environment monitor forecasting center,We need to improve the communication protocol for facilitating data exchange.Finally,characteristics of this system are summarized based on the actual result of the research and development of this system,and the future designing work is also prospected.