Data Acquisition and Transfer System for Ship Navigation using IP Network : Implementation on T.S. Fukae-maru
Nobukazu Wakabayashi, Yoshiji YANO, Yasuhiko Hayashi, Koji Murai · The Journal of Japan Institute of Navigation · 2002
皿 aru has 100Mbps FDDI network ( Ship ' s LAN for short ) ． IP network is running on the Ship ' s LAN ． In T ． S． Fukae -maru ， rnany kinds of sensor that measures various kinds of data are connected to the Ship ' s LAN through sequencers ． It is possible to get these measured data with IP communication ． Using this feature ， authors design the server program that receives the data from sequencers periodically ， and transfers the data on user request ． A client prQgram sends a request to the server prograln ， and disp ！ ays ／ processes the data that is receive 妊 from the server progran1 ． These two programs are executed as different processes ． The IP protocol is utilized in the co 耳 1munication between both processes ， Authors propose that data acquisition ／ transfer system is composed with such server -client model ． しThe cQmputers require just reguler connection to the network through the interface like Ethernet but any other special connection to the measuring devices ． By connecting the computer to the Shi ゴ s LAN ， users are able tD utilize data in various places in T ． S ． Fukae -maru ． In this paper ， we describe the method of the system design with serverclient model and some cases of its application ． As t飴 first step ， experiments by prototype system and data display system by graphics are explained ．