# Research and Development of Inland Green and Smart Ship Technologies in China
## 4 Inland Green Smart Test Ship
### Modular Function Arrangement Optimization  
According to the functions to be implemented by the major modules, the respective characteristics of each module were analyzed, and the environmental and arrangement requirements, such as the space and temperature requirements, during independent operation of each module were studied. The cross-correlation between the major modules was also studied, and a local area network system of integrated and interconnected systems in the ship was established. This included the integration of the infrastructure, such as integrated network design and construction, cloud platform construction, and database cluster construction.  
For application integration, the smart navigation, engine room, and energy efficiency management systems are integrated on the platform's service-oriented architecture, and the network remote monitoring interface is unified. For service integration, there are common systems for smart navigation, engine room, and energy efficiency management systems. For the services that are of a public nature and are reused, service integration is performed on a software data bus, while the platform provides public services for each subsystem. For data integration, according to data integration specifications, two-way data are provided between the platform and each subsystem. For transmission integration, data are transmitted in a timely, reliable, and safe manner, in accordance with data collection and transmission specifications and ship-shore data interaction specifications. Through the corresponding auxiliary decision-making functions of the smart navigation, engine room, and energy efficiency management systems, as well as the comprehensive auxiliary decision-making function of the platform's integrated management system, the auxiliary decision making of ship operation and management is achieved. By intelligent perception and online monitoring of the main engine, auxiliary engines, and pumps in the cabin, the working condition of the equipment is clarified, and \"condition-based maintenance\" is achieved. By perceiving and analyzing the energy consumption status of ships and energy consuming equipment, navigation strategies are formulated to achieve energy efficiency improvement.  
Smart hull and sensing systems were integrated to simultaneously sense the external environment and the ship's structural response. The form of the hull longitudinal strength monitoring measuring points, local strength monitoring measuring point network arrangement, and hull monitoring strength analysis and evaluation technology was researched to achieve real-time monitoring of the health of the hull structure and assessment of the structural reliability.  
All of the smart system modules are reasonably arranged on the test ship. To ensure the smooth installation, testing, and verification of each module, the actual operation of each smart module was considered, and characteristic analysis and parameter evaluation was conducted. According to the defined objective function, modular arrangement optimization to obtain the overall function with demand optimization was also conducted. To ensure the installation and replacement of various smart systems on new and old ships, the test ship was designed with an open structure that can be reconfigured in various ways. Based on the task requirements, it can be assembled and matched with different smart modules to achieve plug-and-play capabilities.