Research And Implementation On Network Communication Of PDC In VDR

Voyage Data Recorder(VDR) is an equipment which can record ship navigation status and manipulation information,and take an important role on navigation safety on the sea and accident analysis.The massive data of VDR needs to be saved rapidly and reliably,because it is the key basis for analyzing accident.Therefore,the Protected Data Container(PDC) becomes an important constituent of VDR.According to the requirement of VDR project team of our teaching and research section,the PDC hardware and software features are researched and implemented in detail in this paper.In this paper,the background and status of research topics is introduced firstly,and a reasonable systems architecture design is proved.Then the hardware platform design which uses AT91RM9200 as its master controller is introduced,and the devices selection and circuit design of key components are discussed in detail.The software platform construction is also introduced detailedly,based on Embedded Linux OS.In this thesis,the research and implementation of data sharing between heterogeneous networkes is discussed finally.And a human-computer interaction interface based on Embedded Web Server is constructed,to achieve remote management and configueration of PDC.The PDC not only offers the stable data storage and share,but also provides general interfaces,so most of clients needn't use any other software but the operating system themselves can access the data in the PDC. It has pass type approval test of the China Classification Society(CCS),and can be applied in the practical Voyage Data Recorder.