The change of the computing environment makes the servitization become the main business model of all kinds of the resource sharing in the modern informationized society. The information system has accomplished the evolution from enterprise oriented MIS focusing on the internal management to the client oriented ERP concerning the whole supply chain. The arrival of the Internet of Things (IOT) summons the new type of information systems based on IOT. Founded on the requirements of pelagic vessel and its operating system, this paper discussed the architecture model of open service component architecture model based on the new type IOT smart service system and its systemic function. In the practical application, the relational representation and management of system service components are grossly complicated while the redundancy and overall relationship between the service components are troublesome to be grasped. Therefore, this paper disserts the dynamic representation method of service components relationship in the system based on the Petri net. Under the effect of this method, the users’ overall acquisition capability for the service component has been enhanced, which contributes to discover the conflict and redundancy of solving between the service components and provides an intuitive illustration mechanism for the combination configuration of service components. The intelligence of the system and the advantage of SOA are evaluated as well. Meanwhile, the reliability of the method in this paper is proved by means of the experimental simulation.