Research And Development On Ship Intelligent Collision Avoidance Expert System

In case of ship collision, not only the hull is damaged, the goods is jeopardized, but also the ship and people are killed, and even the sea is polluted. The consequence is serious and it is the big misfortune of navigation. The ship collision avoidance and safely sailing have been the important subjects that the international navigation organization has paid close attention to. In recent years, with the increase of shipping, the maximization of ship scale, and the increasing number of the maritime establishment, more than one hundred ships collide every year. To navel vessel, ship collision accidents also influence the completion of the military task. Though people have taken a lot of measures, the collision accident of ship happens repeatedly. In fact, most of the collision accidents are caused by the navigator's carelessness, fault and those operations violating the International Regulations for Preventing Collision at Sea. To reduce human error is very import for navigation safety. For this reason, the countries all over the world are seeking valid method of automatically collision avoidance.In this paper, a ship intelligent collision avoidance expert system is built. In the process of the system study, the knowledge in the domain of ship collision avoidance is analyzed and the collision mechanism, process and the tactic are studied firstly. And then, using the fuzzy mathematics theory, the fuzzy mathematical model of judging collision risk is built, which take into account of the factors such as ship maneuverability, visibility and so on. In addition, based on the expert system theory, a design method of ship intelligent collision avoidance expert system is put forward, and the frame of ship intelligent collision avoidance expert system is built. Finally, using Visual Basic 6.0, the software of Ship Intelligent Avoid Collision Expert System are designed and developed, which has friendly visible interface. It should be noted that theprediction of ship maneuvering motion is imported to the ship intelligent avoiding collision expert system, which is used to inspect the decision in ship collision avoidance.Ship intelligent avoiding collision expert system, being a hot topic, are studied by the international navigation field. The ship intelligent collision avoidance expert system is proposed in this paper, the computer simulation results are in coherence with the practice and good results are achieved.