| Summary: | 碩士 === 國立臺灣科技大學 === 營建工程系 === 99 === This work extends the former study by Hung (2007) that uses distributed computing technique and service-oriented architecture to construct a monitoring information system, and further adds project services and alarm services. This newly developed system architecture not only inherits the extensibility and scalability of the former architecture, but also increases the flexibility of deployment and the effectiveness of resource utilization. In addition, responsibilities of each service are further clarified. A prototype system based on the new architecture is developed to verify its feasibility. The new prototype system uses REST style web service and JSON as its data exchange format. The reason of using these new styles and standards over former studies using SOAP standard is to reduce the load of computer services to construct lightweight information systems.
Preliminary evaluations methods are also proposed to study the reliability of the proposed information system in three aspects: 1) data transmission affected by uncertainties in hardware and networking, 2) data retention reliability, and 3) system reliability under load. The data-transmission reliability-assessment contributes to the modified design of the data transmission mechanism that improves the system reliability. Both data retention reliability and system reliability under load can help advice system administrators of the information system on how to configure the coordination between data services and field services.
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