Web-based Remote Monitoring System

The paper of study on long-distance inspect system based on Web is based on distributing Three-layer applied structure. It sets forth every layer of Three-layer applied structure and the technologies and realize of program.With developing of computer at very fast speed, change of software structure goes through three phases: one-layer applied structure and two-layer applied structure and popular Three-layer applied structure. Three-layer applied structure that includes Show layer and Operation logic layer (middle layer) and Data layer gets over the shortcoming of one-layer applied structure and two-layer applied structure such as overstaffed structure, difficult programming, difficult maintenance, and makes three layers take charge of their duty and structure in focus. It improves the efficiency of software greatly. The developing current of three-layer applied structure is multiplayer distributed system and has wide foreground.With developing of Internet, many applies based on Web is used widely. User can browse the data of network with browser easily. B/S structure is based on the Compounding of browser and Three-layer applied structure. It sets out the advantage of Three-layer applied greatly. Because of visiting by browser at client, programmer can spend more time on middle layer and data layer. And B/S structure makes the maintenance become easy. As same time, the technology of Web, module and database is developing.The main work of paper:1. Three-layer applied structure2. The technologies of three-layer applied structure: COM technology, ASP script technology, data accessing technology3. Program...