Development Of The Data Collector And Its Data Processing Methods In Marine Environment

With the over-exploitation of land resources and the environmental destruction, the marine resources become more and more important in the human society's development. To some extent, the marine monitoring ability directly affects the level of marine resource development. Based on the newest marine monitoring techniques and the features of our country's marine monitoring field, this thesis designs and develops a marine monitoring data collector and the data processing methods of the marine monitoring key parameters.By analyzing all structural and key problems existing in marine monitoring field, this thesis determines the functional requirements of marine monitoring, and puts forward the data collector's overall design. The data collector has a variety of interface and mass storage, with double single-chip as the core. The software and hardware of data storage module, real-time clock module, analog-digital conversion module and reset monitoring module are developed that realize the functions such as data collecting, processing, storing and transferring.According to the different needs of data collector and the host computer for the data processing, the data processing methods of key parameters are designed. By analyzing many data processing methods, the collector's digital filter is realized with the compound filter method. Extreme and maximal points are extracted according to the characteristics of the wind speed and direction. The value of tide level is supplemented by interpolating and curve fitting. The moving average method is used to extract the values of high and low tide level.Results of data collector's test and field data processing have shown that the data collector can collect and process data of hydro meteorological parameters. The data processing of key parameters in the host computer have got an expected effect, and provides accurate data basis for other researches of marine monitoring data processing.